diff options
Diffstat (limited to 'drivers/mfd')
32 files changed, 4039 insertions, 2111 deletions
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index a67adcb..f1391c2 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -2,23 +2,8 @@ # Multifunction miscellaneous devices # -menuconfig MFD_SUPPORT - bool "Multifunction device drivers" - depends on HAS_IOMEM - default y - help - Multifunction devices embed several functions (e.g. GPIOs, - touchscreens, keyboards, current regulators, power management chips, - etc...) in one single integrated circuit. They usually talk to the - main CPU through one or more IRQ lines and low speed data busses (SPI, - I2C, etc..). They appear as one single device to the main system - through the data bus and the MFD framework allows for sub devices - (a.k.a. functions) to appear as discrete platform devices. - MFDs are typically found on embedded platforms. - - This option alone does not add any kernel code. - -if MFD_SUPPORT +if HAS_IOMEM +menu "Multifunction device drivers" config MFD_CORE tristate @@ -390,6 +375,7 @@ config MFD_WM8400 tristate "Support Wolfson Microelectronics WM8400" select MFD_CORE depends on I2C + select REGMAP_I2C help Support for the Wolfson Microelecronics WM8400 PMIC and audio CODEC. This driver provides common support for accessing @@ -503,6 +489,7 @@ config MFD_WM8994 config MFD_PCF50633 tristate "Support for NXP PCF50633" depends on I2C + select REGMAP_I2C help Say yes here if you have NXP PCF50633 chip on your board. This core driver provides register access and IRQ handling @@ -579,6 +566,23 @@ config EZX_PCAP This enables the PCAP ASIC present on EZX Phones. This is needed for MMC, TouchScreen, Sound, USB, etc.. +config AB5500_CORE + bool "ST-Ericsson AB5500 Mixed Signal Power Management chip" + depends on ABX500_CORE && MFD_DB5500_PRCMU + select MFD_CORE + help + Select this option to enable access to AB5500 power management + chip. This connects to the db5500 chip via the I2C bus via PRCMU. + This chip embeds various other multimedia funtionalities as well. + +config AB5500_DEBUG + bool "Enable debug info via debugfs" + depends on AB5500_CORE && DEBUG_FS + default y if DEBUG_FS + help + Select this option if you want debug information from the AB5500 + using the debug filesystem, debugfs. + config AB8500_CORE bool "ST-Ericsson AB8500 Mixed Signal Power Management chip" depends on GENERIC_HARDIRQS && ABX500_CORE @@ -615,20 +619,6 @@ config AB8500_GPADC help AB8500 GPADC driver used to convert Acc and battery/ac/usb voltage -config AB3550_CORE - bool "ST-Ericsson AB3550 Mixed Signal Circuit core functions" - select MFD_CORE - depends on I2C=y && GENERIC_HARDIRQS && ABX500_CORE - help - Select this to enable the AB3550 Mixed Signal IC core - functionality. This connects to a AB3550 on the I2C bus - and expose a number of symbols needed for dependent devices - to read and write registers and subscribe to events from - this multi-functional IC. This is needed to use other features - of the AB3550 such as battery-backed RTC, charging control, - LEDs, vibrator, system power and temperature, power management - and ALSA sound. - config MFD_DB8500_PRCMU bool "ST-Ericsson DB8500 Power Reset Control Management Unit" depends on UX500_SOC_DB8500 @@ -773,7 +763,17 @@ config MFD_AAT2870_CORE additional drivers must be enabled in order to use the functionality of the device. -endif # MFD_SUPPORT +config MFD_INTEL_MSIC + bool "Support for Intel MSIC" + depends on INTEL_SCU_IPC + select MFD_CORE + help + Select this option to enable access to Intel MSIC (Avatele + Passage) chip. This chip embeds audio, battery, GPIO, etc. + devices used in Intel Medfield platforms. + +endmenu +endif menu "Multimedia Capabilities Port drivers" depends on ARCH_SA1100 diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index c580203..b2292eb 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -79,7 +79,8 @@ obj-$(CONFIG_PCF50633_GPIO) += pcf50633-gpio.o obj-$(CONFIG_ABX500_CORE) += abx500-core.o obj-$(CONFIG_AB3100_CORE) += ab3100-core.o obj-$(CONFIG_AB3100_OTP) += ab3100-otp.o -obj-$(CONFIG_AB3550_CORE) += ab3550-core.o +obj-$(CONFIG_AB5500_CORE) += ab5500-core.o +obj-$(CONFIG_AB5500_DEBUG) += ab5500-debugfs.o obj-$(CONFIG_AB8500_CORE) += ab8500-core.o ab8500-sysctrl.o obj-$(CONFIG_AB8500_DEBUG) += ab8500-debugfs.o obj-$(CONFIG_AB8500_GPADC) += ab8500-gpadc.o @@ -102,3 +103,4 @@ obj-$(CONFIG_MFD_PM8921_CORE) += pm8921-core.o obj-$(CONFIG_MFD_PM8XXX_IRQ) += pm8xxx-irq.o obj-$(CONFIG_TPS65911_COMPARATOR) += tps65911-comparator.o obj-$(CONFIG_MFD_AAT2870_CORE) += aat2870-core.o +obj-$(CONFIG_MFD_INTEL_MSIC) += intel_msic.o diff --git a/drivers/mfd/aat2870-core.c b/drivers/mfd/aat2870-core.c index 345dc65..02c4201 100644 --- a/drivers/mfd/aat2870-core.c +++ b/drivers/mfd/aat2870-core.c @@ -295,7 +295,7 @@ static ssize_t aat2870_reg_write_file(struct file *file, { struct aat2870_data *aat2870 = file->private_data; char buf[32]; - int buf_size; + ssize_t buf_size; char *start = buf; unsigned long addr, val; int ret; diff --git a/drivers/mfd/ab3100-core.c b/drivers/mfd/ab3100-core.c index a20e1c4..4f57255 100644 --- a/drivers/mfd/ab3100-core.c +++ b/drivers/mfd/ab3100-core.c @@ -809,7 +809,7 @@ struct ab_family_id { char *name; }; -static const struct ab_family_id ids[] __devinitdata = { +static const struct ab_family_id ids[] __devinitconst = { /* AB3100 */ { .id = 0xc0, diff --git a/drivers/mfd/ab3550-core.c b/drivers/mfd/ab3550-core.c deleted file mode 100644 index 56ba194..0000000 --- a/drivers/mfd/ab3550-core.c +++ /dev/null @@ -1,1380 +0,0 @@ -/* - * Copyright (C) 2007-2010 ST-Ericsson - * License terms: GNU General Public License (GPL) version 2 - * Low-level core for exclusive access to the AB3550 IC on the I2C bus - * and some basic chip-configuration. - * Author: Bengt Jonsson <bengt.g.jonsson@stericsson.com> - * Author: Mattias Nilsson <mattias.i.nilsson@stericsson.com> - * Author: Mattias Wallin <mattias.wallin@stericsson.com> - * Author: Rickard Andersson <rickard.andersson@stericsson.com> - */ - -#include <linux/i2c.h> -#include <linux/mutex.h> -#include <linux/err.h> -#include <linux/platform_device.h> -#include <linux/slab.h> -#include <linux/device.h> -#include <linux/irq.h> -#include <linux/interrupt.h> -#include <linux/random.h> -#include <linux/workqueue.h> -#include <linux/debugfs.h> -#include <linux/seq_file.h> -#include <linux/uaccess.h> -#include <linux/mfd/abx500.h> -#include <linux/list.h> -#include <linux/bitops.h> -#include <linux/spinlock.h> -#include <linux/mfd/core.h> - -#define AB3550_NAME_STRING "ab3550" -#define AB3550_ID_FORMAT_STRING "AB3550 %s" -#define AB3550_NUM_BANKS 2 -#define AB3550_NUM_EVENT_REG 5 - -/* These are the only registers inside AB3550 used in this main file */ - -/* Chip ID register */ -#define AB3550_CID_REG 0x20 - -/* Interrupt event registers */ -#define AB3550_EVENT_BANK 0 -#define AB3550_EVENT_REG 0x22 - -/* Read/write operation values. */ -#define AB3550_PERM_RD (0x01) -#define AB3550_PERM_WR (0x02) - -/* Read/write permissions. */ -#define AB3550_PERM_RO (AB3550_PERM_RD) -#define AB3550_PERM_RW (AB3550_PERM_RD | AB3550_PERM_WR) - -/** - * struct ab3550 - * @access_mutex: lock out concurrent accesses to the AB registers - * @i2c_client: I2C client for this chip - * @chip_name: name of this chip variant - * @chip_id: 8 bit chip ID for this chip variant - * @mask_work: a worker for writing to mask registers - * @event_lock: a lock to protect the event_mask - * @event_mask: a local copy of the mask event registers - * @startup_events: a copy of the first reading of the event registers - * @startup_events_read: whether the first events have been read - */ -struct ab3550 { - struct mutex access_mutex; - struct i2c_client *i2c_client[AB3550_NUM_BANKS]; - char chip_name[32]; - u8 chip_id; - struct work_struct mask_work; - spinlock_t event_lock; - u8 event_mask[AB3550_NUM_EVENT_REG]; - u8 startup_events[AB3550_NUM_EVENT_REG]; - bool startup_events_read; -#ifdef CONFIG_DEBUG_FS - unsigned int debug_bank; - unsigned int debug_address; -#endif -}; - -/** - * struct ab3550_reg_range - * @first: the first address of the range - * @last: the last address of the range - * @perm: access permissions for the range - */ -struct ab3550_reg_range { - u8 first; - u8 last; - u8 perm; -}; - -/** - * struct ab3550_reg_ranges - * @count: the number of ranges in the list - * @range: the list of register ranges - */ -struct ab3550_reg_ranges { - u8 count; - const struct ab3550_reg_range *range; -}; - -/* - * Permissible register ranges for reading and writing per device and bank. - * - * The ranges must be listed in increasing address order, and no overlaps are - * allowed. It is assumed that write permission implies read permission - * (i.e. only RO and RW permissions should be used). Ranges with write - * permission must not be split up. - */ - -#define NO_RANGE {.count = 0, .range = NULL,} - -static struct -ab3550_reg_ranges ab3550_reg_ranges[AB3550_NUM_DEVICES][AB3550_NUM_BANKS] = { - [AB3550_DEVID_DAC] = { - NO_RANGE, - { - .count = 2, - .range = (struct ab3550_reg_range[]) { - { - .first = 0xb0, - .last = 0xba, - .perm = AB3550_PERM_RW, - }, - { - .first = 0xbc, - .last = 0xc3, - .perm = AB3550_PERM_RW, - }, - }, - }, - }, - [AB3550_DEVID_LEDS] = { - NO_RANGE, - { - .count = 2, - .range = (struct ab3550_reg_range[]) { - { - .first = 0x5a, - .last = 0x88, - .perm = AB3550_PERM_RW, - }, - { - .first = 0x8a, - .last = 0xad, - .perm = AB3550_PERM_RW, - }, - } - }, - }, - [AB3550_DEVID_POWER] = { - { - .count = 1, - .range = (struct ab3550_reg_range[]) { - { - .first = 0x21, - .last = 0x21, - .perm = AB3550_PERM_RO, - }, - } - }, - NO_RANGE, - }, - [AB3550_DEVID_REGULATORS] = { - { - .count = 1, - .range = (struct ab3550_reg_range[]) { - { - .first = 0x69, - .last = 0xa3, - .perm = AB3550_PERM_RW, - }, - } - }, - { - .count = 1, - .range = (struct ab3550_reg_range[]) { - { - .first = 0x14, - .last = 0x16, - .perm = AB3550_PERM_RW, - }, - } - }, - }, - [AB3550_DEVID_SIM] = { - { - .count = 1, - .range = (struct ab3550_reg_range[]) { - { - .first = 0x21, - .last = 0x21, - .perm = AB3550_PERM_RO, - }, - } - }, - { - .count = 1, - .range = (struct ab3550_reg_range[]) { - { - .first = 0x14, - .last = 0x17, - .perm = AB3550_PERM_RW, - }, - } - - }, - }, - [AB3550_DEVID_UART] = { - NO_RANGE, - NO_RANGE, - }, - [AB3550_DEVID_RTC] = { - { - .count = 1, - .range = (struct ab3550_reg_range[]) { - { - .first = 0x00, - .last = 0x0c, - .perm = AB3550_PERM_RW, - }, - } - }, - NO_RANGE, - }, - [AB3550_DEVID_CHARGER] = { - { - .count = 2, - .range = (struct ab3550_reg_range[]) { - { - .first = 0x10, - .last = 0x1a, - .perm = AB3550_PERM_RW, - }, - { - .first = 0x21, - .last = 0x21, - .perm = AB3550_PERM_RO, - }, - } - }, - NO_RANGE, - }, - [AB3550_DEVID_ADC] = { - NO_RANGE, - { - .count = 1, - .range = (struct ab3550_reg_range[]) { - { - .first = 0x20, - .last = 0x56, - .perm = AB3550_PERM_RW, - }, - - } - }, - }, - [AB3550_DEVID_FUELGAUGE] = { - { - .count = 1, - .range = (struct ab3550_reg_range[]) { - { - .first = 0x21, - .last = 0x21, - .perm = AB3550_PERM_RO, - }, - } - }, - { - .count = 1, - .range = (struct ab3550_reg_range[]) { - { - .first = 0x00, - .last = 0x0e, - .perm = AB3550_PERM_RW, - }, - } - }, - }, - [AB3550_DEVID_VIBRATOR] = { - NO_RANGE, - { - .count = 1, - .range = (struct ab3550_reg_range[]) { - { - .first = 0x10, - .last = 0x13, - .perm = AB3550_PERM_RW, - }, - - } - }, - }, - [AB3550_DEVID_CODEC] = { - { - .count = 2, - .range = (struct ab3550_reg_range[]) { - { - .first = 0x31, - .last = 0x63, - .perm = AB3550_PERM_RW, - }, - { - .first = 0x65, - .last = 0x68, - .perm = AB3550_PERM_RW, - }, - } - }, - NO_RANGE, - }, -}; - -static struct mfd_cell ab3550_devs[AB3550_NUM_DEVICES] = { - [AB3550_DEVID_DAC] = { - .name = "ab3550-dac", - .id = AB3550_DEVID_DAC, - .num_resources = 0, - }, - [AB3550_DEVID_LEDS] = { - .name = "ab3550-leds", - .id = AB3550_DEVID_LEDS, - }, - [AB3550_DEVID_POWER] = { - .name = "ab3550-power", - .id = AB3550_DEVID_POWER, - }, - [AB3550_DEVID_REGULATORS] = { - .name = "ab3550-regulators", - .id = AB3550_DEVID_REGULATORS, - }, - [AB3550_DEVID_SIM] = { - .name = "ab3550-sim", - .id = AB3550_DEVID_SIM, - }, - [AB3550_DEVID_UART] = { - .name = "ab3550-uart", - .id = AB3550_DEVID_UART, - }, - [AB3550_DEVID_RTC] = { - .name = "ab3550-rtc", - .id = AB3550_DEVID_RTC, - }, - [AB3550_DEVID_CHARGER] = { - .name = "ab3550-charger", - .id = AB3550_DEVID_CHARGER, - }, - [AB3550_DEVID_ADC] = { - .name = "ab3550-adc", - .id = AB3550_DEVID_ADC, - .num_resources = 10, - .resources = (struct resource[]) { - { - .name = "TRIGGER-0", - .flags = IORESOURCE_IRQ, - .start = 16, - .end = 16, - }, - { - .name = "TRIGGER-1", - .flags = IORESOURCE_IRQ, - .start = 17, - .end = 17, - }, - { - .name = "TRIGGER-2", - .flags = IORESOURCE_IRQ, - .start = 18, - .end = 18, - }, - { - .name = "TRIGGER-3", - .flags = IORESOURCE_IRQ, - .start = 19, - .end = 19, - }, - { - .name = "TRIGGER-4", - .flags = IORESOURCE_IRQ, - .start = 20, - .end = 20, - }, - { - .name = "TRIGGER-5", - .flags = IORESOURCE_IRQ, - .start = 21, - .end = 21, - }, - { - .name = "TRIGGER-6", - .flags = IORESOURCE_IRQ, - .start = 22, - .end = 22, - }, - { - .name = "TRIGGER-7", - .flags = IORESOURCE_IRQ, - .start = 23, - .end = 23, - }, - { - .name = "TRIGGER-VBAT-TXON", - .flags = IORESOURCE_IRQ, - .start = 13, - .end = 13, - }, - { - .name = "TRIGGER-VBAT", - .flags = IORESOURCE_IRQ, - .start = 12, - .end = 12, - }, - }, - }, - [AB3550_DEVID_FUELGAUGE] = { - .name = "ab3550-fuelgauge", - .id = AB3550_DEVID_FUELGAUGE, - }, - [AB3550_DEVID_VIBRATOR] = { - .name = "ab3550-vibrator", - .id = AB3550_DEVID_VIBRATOR, - }, - [AB3550_DEVID_CODEC] = { - .name = "ab3550-codec", - .id = AB3550_DEVID_CODEC, - }, -}; - -/* - * I2C transactions with error messages. - */ -static int ab3550_i2c_master_send(struct ab3550 *ab, u8 bank, u8 *data, - u8 count) -{ - int err; - - err = i2c_master_send(ab->i2c_client[bank], data, count); - if (err < 0) { - dev_err(&ab->i2c_client[0]->dev, "send error: %d\n", err); - return err; - } - return 0; -} - -static int ab3550_i2c_master_recv(struct ab3550 *ab, u8 bank, u8 *data, - u8 count) -{ - int err; - - err = i2c_master_recv(ab->i2c_client[bank], data, count); - if (err < 0) { - dev_err(&ab->i2c_client[0]->dev, "receive error: %d\n", err); - return err; - } - return 0; -} - -/* - * Functionality for getting/setting register values. - */ -static int get_register_interruptible(struct ab3550 *ab, u8 bank, u8 reg, - u8 *value) -{ - int err; - - err = mutex_lock_interruptible(&ab->access_mutex); - if (err) - return err; - - err = ab3550_i2c_master_send(ab, bank, ®, 1); - if (!err) - err = ab3550_i2c_master_recv(ab, bank, value, 1); - - mutex_unlock(&ab->access_mutex); - return err; -} - -static int get_register_page_interruptible(struct ab3550 *ab, u8 bank, - u8 first_reg, u8 *regvals, u8 numregs) -{ - int err; - - err = mutex_lock_interruptible(&ab->access_mutex); - if (err) - return err; - - err = ab3550_i2c_master_send(ab, bank, &first_reg, 1); - if (!err) - err = ab3550_i2c_master_recv(ab, bank, regvals, numregs); - - mutex_unlock(&ab->access_mutex); - return err; -} - -static int mask_and_set_register_interruptible(struct ab3550 *ab, u8 bank, - u8 reg, u8 bitmask, u8 bitvalues) -{ - int err = 0; - - if (likely(bitmask)) { - u8 reg_bits[2] = {reg, 0}; - - err = mutex_lock_interruptible(&ab->access_mutex); - if (err) - return err; - - if (bitmask == 0xFF) /* No need to read in this case. */ - reg_bits[1] = bitvalues; - else { /* Read and modify the register value. */ - u8 bits; - - err = ab3550_i2c_master_send(ab, bank, ®, 1); - if (err) - goto unlock_and_return; - err = ab3550_i2c_master_recv(ab, bank, &bits, 1); - if (err) - goto unlock_and_return; - reg_bits[1] = ((~bitmask & bits) | - (bitmask & bitvalues)); - } - /* Write the new value. */ - err = ab3550_i2c_master_send(ab, bank, reg_bits, 2); -unlock_and_return: - mutex_unlock(&ab->access_mutex); - } - return err; -} - -/* - * Read/write permission checking functions. - */ -static bool page_write_allowed(const struct ab3550_reg_ranges *ranges, - u8 first_reg, u8 last_reg) -{ - u8 i; - - if (last_reg < first_reg) - return false; - - for (i = 0; i < ranges->count; i++) { - if (first_reg < ranges->range[i].first) - break; - if ((last_reg <= ranges->range[i].last) && - (ranges->range[i].perm & AB3550_PERM_WR)) - return true; - } - return false; -} - -static bool reg_write_allowed(const struct ab3550_reg_ranges *ranges, u8 reg) -{ - return page_write_allowed(ranges, reg, reg); -} - -static bool page_read_allowed(const struct ab3550_reg_ranges *ranges, - u8 first_reg, u8 last_reg) -{ - u8 i; - - if (last_reg < first_reg) - return false; - /* Find the range (if it exists in the list) that includes first_reg. */ - for (i = 0; i < ranges->count; i++) { - if (first_reg < ranges->range[i].first) - return false; - if (first_reg <= ranges->range[i].last) - break; - } - /* Make sure that the entire range up to and including last_reg is - * readable. This may span several of the ranges in the list. - */ - while ((i < ranges->count) && - (ranges->range[i].perm & AB3550_PERM_RD)) { - if (last_reg <= ranges->range[i].last) - return true; - if ((++i >= ranges->count) || - (ranges->range[i].first != - (ranges->range[i - 1].last + 1))) { - break; - } - } - return false; -} - -static bool reg_read_allowed(const struct ab3550_reg_ranges *ranges, u8 reg) -{ - return page_read_allowed(ranges, reg, reg); -} - -/* - * The register access functionality. - */ -static int ab3550_get_chip_id(struct device *dev) -{ - struct ab3550 *ab = dev_get_drvdata(dev->parent); - return (int)ab->chip_id; -} - -static int ab3550_mask_and_set_register_interruptible(struct device *dev, - u8 bank, u8 reg, u8 bitmask, u8 bitvalues) -{ - struct ab3550 *ab; - struct platform_device *pdev = to_platform_device(dev); - - if ((AB3550_NUM_BANKS <= bank) || - !reg_write_allowed(&ab3550_reg_ranges[pdev->id][bank], reg)) - return -EINVAL; - - ab = dev_get_drvdata(dev->parent); - return mask_and_set_register_interruptible(ab, bank, reg, - bitmask, bitvalues); -} - -static int ab3550_set_register_interruptible(struct device *dev, u8 bank, - u8 reg, u8 value) -{ - return ab3550_mask_and_set_register_interruptible(dev, bank, reg, 0xFF, - value); -} - -static int ab3550_get_register_interruptible(struct device *dev, u8 bank, - u8 reg, u8 *value) -{ - struct ab3550 *ab; - struct platform_device *pdev = to_platform_device(dev); - - if ((AB3550_NUM_BANKS <= bank) || - !reg_read_allowed(&ab3550_reg_ranges[pdev->id][bank], reg)) - return -EINVAL; - - ab = dev_get_drvdata(dev->parent); - return get_register_interruptible(ab, bank, reg, value); -} - -static int ab3550_get_register_page_interruptible(struct device *dev, u8 bank, - u8 first_reg, u8 *regvals, u8 numregs) -{ - struct ab3550 *ab; - struct platform_device *pdev = to_platform_device(dev); - - if ((AB3550_NUM_BANKS <= bank) || - !page_read_allowed(&ab3550_reg_ranges[pdev->id][bank], - first_reg, (first_reg + numregs - 1))) - return -EINVAL; - - ab = dev_get_drvdata(dev->parent); - return get_register_page_interruptible(ab, bank, first_reg, regvals, - numregs); -} - -static int ab3550_event_registers_startup_state_get(struct device *dev, - u8 *event) -{ - struct ab3550 *ab; - - ab = dev_get_drvdata(dev->parent); - if (!ab->startup_events_read) - return -EAGAIN; /* Try again later */ - - memcpy(event, ab->startup_events, AB3550_NUM_EVENT_REG); - return 0; -} - -static int ab3550_startup_irq_enabled(struct device *dev, unsigned int irq) -{ - struct ab3550 *ab; - struct ab3550_platform_data *plf_data; - bool val; - - ab = irq_get_chip_data(irq); - plf_data = ab->i2c_client[0]->dev.platform_data; - irq -= plf_data->irq.base; - val = ((ab->startup_events[irq / 8] & BIT(irq % 8)) != 0); - - return val; -} - -static struct abx500_ops ab3550_ops = { - .get_chip_id = ab3550_get_chip_id, - .get_register = ab3550_get_register_interruptible, - .set_register = ab3550_set_register_interruptible, - .get_register_page = ab3550_get_register_page_interruptible, - .set_register_page = NULL, - .mask_and_set_register = ab3550_mask_and_set_register_interruptible, - .event_registers_startup_state_get = - ab3550_event_registers_startup_state_get, - .startup_irq_enabled = ab3550_startup_irq_enabled, -}; - -static irqreturn_t ab3550_irq_handler(int irq, void *data) -{ - struct ab3550 *ab = data; - int err; - unsigned int i; - u8 e[AB3550_NUM_EVENT_REG]; - u8 *events; - unsigned long flags; - - events = (ab->startup_events_read ? e : ab->startup_events); - - err = get_register_page_interruptible(ab, AB3550_EVENT_BANK, - AB3550_EVENT_REG, events, AB3550_NUM_EVENT_REG); - if (err) - goto err_event_rd; - - if (!ab->startup_events_read) { - dev_info(&ab->i2c_client[0]->dev, - "startup events 0x%x,0x%x,0x%x,0x%x,0x%x\n", - ab->startup_events[0], ab->startup_events[1], - ab->startup_events[2], ab->startup_events[3], - ab->startup_events[4]); - ab->startup_events_read = true; - goto out; - } - - /* The two highest bits in event[4] are not used. */ - events[4] &= 0x3f; - - spin_lock_irqsave(&ab->event_lock, flags); - for (i = 0; i < AB3550_NUM_EVENT_REG; i++) - events[i] &= ~ab->event_mask[i]; - spin_unlock_irqrestore(&ab->event_lock, flags); - - for (i = 0; i < AB3550_NUM_EVENT_REG; i++) { - u8 bit; - u8 event_reg; - - dev_dbg(&ab->i2c_client[0]->dev, "IRQ Event[%d]: 0x%2x\n", - i, events[i]); - - event_reg = events[i]; - for (bit = 0; event_reg; bit++, event_reg /= 2) { - if (event_reg % 2) { - unsigned int irq; - struct ab3550_platform_data *plf_data; - - plf_data = ab->i2c_client[0]->dev.platform_data; - irq = plf_data->irq.base + (i * 8) + bit; - handle_nested_irq(irq); - } - } - } -out: - return IRQ_HANDLED; - -err_event_rd: - dev_dbg(&ab->i2c_client[0]->dev, "error reading event registers\n"); - return IRQ_HANDLED; -} - -#ifdef CONFIG_DEBUG_FS -static struct ab3550_reg_ranges debug_ranges[AB3550_NUM_BANKS] = { - { - .count = 6, - .range = (struct ab3550_reg_range[]) { - { - .first = 0x00, - .last = 0x0e, - }, - { - .first = 0x10, - .last = 0x1a, - }, - { - .first = 0x1e, - .last = 0x4f, - }, - { - .first = 0x51, - .last = 0x63, - }, - { - .first = 0x65, - .last = 0xa3, - }, - { - .first = 0xa5, - .last = 0xa8, - }, - } - }, - { - .count = 8, - .range = (struct ab3550_reg_range[]) { - { - .first = 0x00, - .last = 0x0e, - }, - { - .first = 0x10, - .last = 0x17, - }, - { - .first = 0x1a, - .last = 0x1c, - }, - { - .first = 0x20, - .last = 0x56, - }, - { - .first = 0x5a, - .last = 0x88, - }, - { - .first = 0x8a, - .last = 0xad, - }, - { - .first = 0xb0, - .last = 0xba, - }, - { - .first = 0xbc, - .last = 0xc3, - }, - } - }, -}; - -static int ab3550_registers_print(struct seq_file *s, void *p) -{ - struct ab3550 *ab = s->private; - int bank; - - seq_printf(s, AB3550_NAME_STRING " register values:\n"); - - for (bank = 0; bank < AB3550_NUM_BANKS; bank++) { - unsigned int i; - - seq_printf(s, " bank %d:\n", bank); - for (i = 0; i < debug_ranges[bank].count; i++) { - u8 reg; - - for (reg = debug_ranges[bank].range[i].first; - reg <= debug_ranges[bank].range[i].last; - reg++) { - u8 value; - - get_register_interruptible(ab, bank, reg, - &value); - seq_printf(s, " [%d/0x%02X]: 0x%02X\n", bank, - reg, value); - } - } - } - return 0; -} - -static int ab3550_registers_open(struct inode *inode, struct file *file) -{ - return single_open(file, ab3550_registers_print, inode->i_private); -} - -static const struct file_operations ab3550_registers_fops = { - .open = ab3550_registers_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, - .owner = THIS_MODULE, -}; - -static int ab3550_bank_print(struct seq_file *s, void *p) -{ - struct ab3550 *ab = s->private; - - seq_printf(s, "%d\n", ab->debug_bank); - return 0; -} - -static int ab3550_bank_open(struct inode *inode, struct file *file) -{ - return single_open(file, ab3550_bank_print, inode->i_private); -} - -static ssize_t ab3550_bank_write(struct file *file, - const char __user *user_buf, - size_t count, loff_t *ppos) -{ - struct ab3550 *ab = ((struct seq_file *)(file->private_data))->private; - unsigned long user_bank; - int err; - - /* Get userspace string and assure termination */ - err = kstrtoul_from_user(user_buf, count, 0, &user_bank); - if (err) - return err; - - if (user_bank >= AB3550_NUM_BANKS) { - dev_err(&ab->i2c_client[0]->dev, - "debugfs error input > number of banks\n"); - return -EINVAL; - } - - ab->debug_bank = user_bank; - - return count; -} - -static int ab3550_address_print(struct seq_file *s, void *p) -{ - struct ab3550 *ab = s->private; - - seq_printf(s, "0x%02X\n", ab->debug_address); - return 0; -} - -static int ab3550_address_open(struct inode *inode, struct file *file) -{ - return single_open(file, ab3550_address_print, inode->i_private); -} - -static ssize_t ab3550_address_write(struct file *file, - const char __user *user_buf, - size_t count, loff_t *ppos) -{ - struct ab3550 *ab = ((struct seq_file *)(file->private_data))->private; - unsigned long user_address; - int err; - - /* Get userspace string and assure termination */ - err = kstrtoul_from_user(user_buf, count, 0, &user_address); - if (err) - return err; - - if (user_address > 0xff) { - dev_err(&ab->i2c_client[0]->dev, - "debugfs error input > 0xff\n"); - return -EINVAL; - } - ab->debug_address = user_address; - return count; -} - -static int ab3550_val_print(struct seq_file *s, void *p) -{ - struct ab3550 *ab = s->private; - int err; - u8 regvalue; - - err = get_register_interruptible(ab, (u8)ab->debug_bank, - (u8)ab->debug_address, ®value); - if (err) - return -EINVAL; - seq_printf(s, "0x%02X\n", regvalue); - - return 0; -} - -static int ab3550_val_open(struct inode *inode, struct file *file) -{ - return single_open(file, ab3550_val_print, inode->i_private); -} - -static ssize_t ab3550_val_write(struct file *file, - const char __user *user_buf, - size_t count, loff_t *ppos) -{ - struct ab3550 *ab = ((struct seq_file *)(file->private_data))->private; - unsigned long user_val; - int err; - u8 regvalue; - - /* Get userspace string and assure termination */ - err = kstrtoul_from_user(user_buf, count, 0, &user_val); - if (err) - return err; - - if (user_val > 0xff) { - dev_err(&ab->i2c_client[0]->dev, - "debugfs error input > 0xff\n"); - return -EINVAL; - } - err = mask_and_set_register_interruptible( - ab, (u8)ab->debug_bank, - (u8)ab->debug_address, 0xFF, (u8)user_val); - if (err) - return -EINVAL; - - get_register_interruptible(ab, (u8)ab->debug_bank, - (u8)ab->debug_address, ®value); - if (err) - return -EINVAL; - - return count; -} - -static const struct file_operations ab3550_bank_fops = { - .open = ab3550_bank_open, - .write = ab3550_bank_write, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, - .owner = THIS_MODULE, -}; - -static const struct file_operations ab3550_address_fops = { - .open = ab3550_address_open, - .write = ab3550_address_write, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, - .owner = THIS_MODULE, -}; - -static const struct file_operations ab3550_val_fops = { - .open = ab3550_val_open, - .write = ab3550_val_write, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, - .owner = THIS_MODULE, -}; - -static struct dentry *ab3550_dir; -static struct dentry *ab3550_reg_file; -static struct dentry *ab3550_bank_file; -static struct dentry *ab3550_address_file; -static struct dentry *ab3550_val_file; - -static inline void ab3550_setup_debugfs(struct ab3550 *ab) -{ - ab->debug_bank = 0; - ab->debug_address = 0x00; - - ab3550_dir = debugfs_create_dir(AB3550_NAME_STRING, NULL); - if (!ab3550_dir) - goto exit_no_debugfs; - - ab3550_reg_file = debugfs_create_file("all-registers", - S_IRUGO, ab3550_dir, ab, &ab3550_registers_fops); - if (!ab3550_reg_file) - goto exit_destroy_dir; - - ab3550_bank_file = debugfs_create_file("register-bank", - (S_IRUGO | S_IWUSR), ab3550_dir, ab, &ab3550_bank_fops); - if (!ab3550_bank_file) - goto exit_destroy_reg; - - ab3550_address_file = debugfs_create_file("register-address", - (S_IRUGO | S_IWUSR), ab3550_dir, ab, &ab3550_address_fops); - if (!ab3550_address_file) - goto exit_destroy_bank; - - ab3550_val_file = debugfs_create_file("register-value", - (S_IRUGO | S_IWUSR), ab3550_dir, ab, &ab3550_val_fops); - if (!ab3550_val_file) - goto exit_destroy_address; - - return; - -exit_destroy_address: - debugfs_remove(ab3550_address_file); -exit_destroy_bank: - debugfs_remove(ab3550_bank_file); -exit_destroy_reg: - debugfs_remove(ab3550_reg_file); -exit_destroy_dir: - debugfs_remove(ab3550_dir); -exit_no_debugfs: - dev_err(&ab->i2c_client[0]->dev, "failed to create debugfs entries.\n"); - return; -} - -static inline void ab3550_remove_debugfs(void) -{ - debugfs_remove(ab3550_val_file); - debugfs_remove(ab3550_address_file); - debugfs_remove(ab3550_bank_file); - debugfs_remove(ab3550_reg_file); - debugfs_remove(ab3550_dir); -} - -#else /* !CONFIG_DEBUG_FS */ -static inline void ab3550_setup_debugfs(struct ab3550 *ab) -{ -} -static inline void ab3550_remove_debugfs(void) -{ -} -#endif - -/* - * Basic set-up, datastructure creation/destruction and I2C interface. - * This sets up a default config in the AB3550 chip so that it - * will work as expected. - */ -static int __init ab3550_setup(struct ab3550 *ab) -{ - int err = 0; - int i; - struct ab3550_platform_data *plf_data; - struct abx500_init_settings *settings; - - plf_data = ab->i2c_client[0]->dev.platform_data; - settings = plf_data->init_settings; - - for (i = 0; i < plf_data->init_settings_sz; i++) { - err = mask_and_set_register_interruptible(ab, - settings[i].bank, - settings[i].reg, - 0xFF, settings[i].setting); - if (err) - goto exit_no_setup; - - /* If event mask register update the event mask in ab3550 */ - if ((settings[i].bank == 0) && - (AB3550_IMR1 <= settings[i].reg) && - (settings[i].reg <= AB3550_IMR5)) { - ab->event_mask[settings[i].reg - AB3550_IMR1] = - settings[i].setting; - } - } -exit_no_setup: - return err; -} - -static void ab3550_mask_work(struct work_struct *work) -{ - struct ab3550 *ab = container_of(work, struct ab3550, mask_work); - int i; - unsigned long flags; - u8 mask[AB3550_NUM_EVENT_REG]; - - spin_lock_irqsave(&ab->event_lock, flags); - for (i = 0; i < AB3550_NUM_EVENT_REG; i++) - mask[i] = ab->event_mask[i]; - spin_unlock_irqrestore(&ab->event_lock, flags); - - for (i = 0; i < AB3550_NUM_EVENT_REG; i++) { - int err; - - err = mask_and_set_register_interruptible(ab, 0, - (AB3550_IMR1 + i), ~0, mask[i]); - if (err) - dev_err(&ab->i2c_client[0]->dev, - "ab3550_mask_work failed 0x%x,0x%x\n", - (AB3550_IMR1 + i), mask[i]); - } -} - -static void ab3550_mask(struct irq_data *data) -{ - unsigned long flags; - struct ab3550 *ab; - struct ab3550_platform_data *plf_data; - int irq; - - ab = irq_data_get_irq_chip_data(data); - plf_data = ab->i2c_client[0]->dev.platform_data; - irq = data->irq - plf_data->irq.base; - - spin_lock_irqsave(&ab->event_lock, flags); - ab->event_mask[irq / 8] |= BIT(irq % 8); - spin_unlock_irqrestore(&ab->event_lock, flags); - - schedule_work(&ab->mask_work); -} - -static void ab3550_unmask(struct irq_data *data) -{ - unsigned long flags; - struct ab3550 *ab; - struct ab3550_platform_data *plf_data; - int irq; - - ab = irq_data_get_irq_chip_data(data); - plf_data = ab->i2c_client[0]->dev.platform_data; - irq = data->irq - plf_data->irq.base; - - spin_lock_irqsave(&ab->event_lock, flags); - ab->event_mask[irq / 8] &= ~BIT(irq % 8); - spin_unlock_irqrestore(&ab->event_lock, flags); - - schedule_work(&ab->mask_work); -} - -static void noop(struct irq_data *data) -{ -} - -static struct irq_chip ab3550_irq_chip = { - .name = "ab3550-core", /* Keep the same name as the request */ - .irq_disable = ab3550_mask, /* No default to mask in chip.c */ - .irq_ack = noop, - .irq_mask = ab3550_mask, - .irq_unmask = ab3550_unmask, -}; - -struct ab_family_id { - u8 id; - char *name; -}; - -static const struct ab_family_id ids[] __initdata = { - /* AB3550 */ - { - .id = AB3550_P1A, - .name = "P1A" - }, - /* Terminator */ - { - .id = 0x00, - } -}; - -static int __init ab3550_probe(struct i2c_client *client, - const struct i2c_device_id *id) -{ - struct ab3550 *ab; - struct ab3550_platform_data *ab3550_plf_data = - client->dev.platform_data; - int err; - int i; - int num_i2c_clients = 0; - - ab = kzalloc(sizeof(struct ab3550), GFP_KERNEL); - if (!ab) { - dev_err(&client->dev, - "could not allocate " AB3550_NAME_STRING " device\n"); - return -ENOMEM; - } - - /* Initialize data structure */ - mutex_init(&ab->access_mutex); - spin_lock_init(&ab->event_lock); - ab->i2c_client[0] = client; - - i2c_set_clientdata(client, ab); - - /* Read chip ID register */ - err = get_register_interruptible(ab, 0, AB3550_CID_REG, &ab->chip_id); - if (err) { - dev_err(&client->dev, "could not communicate with the analog " - "baseband chip\n"); - goto exit_no_detect; - } - - for (i = 0; ids[i].id != 0x0; i++) { - if (ids[i].id == ab->chip_id) { - snprintf(&ab->chip_name[0], sizeof(ab->chip_name) - 1, - AB3550_ID_FORMAT_STRING, ids[i].name); - break; - } - } - - if (ids[i].id == 0x0) { - dev_err(&client->dev, "unknown analog baseband chip id: 0x%x\n", - ab->chip_id); - dev_err(&client->dev, "driver not started!\n"); - goto exit_no_detect; - } - - dev_info(&client->dev, "detected AB chip: %s\n", &ab->chip_name[0]); - - /* Attach other dummy I2C clients. */ - while (++num_i2c_clients < AB3550_NUM_BANKS) { - ab->i2c_client[num_i2c_clients] = - i2c_new_dummy(client->adapter, - (client->addr + num_i2c_clients)); - if (!ab->i2c_client[num_i2c_clients]) { - err = -ENOMEM; - goto exit_no_dummy_client; - } - strlcpy(ab->i2c_client[num_i2c_clients]->name, id->name, - sizeof(ab->i2c_client[num_i2c_clients]->name)); - } - - err = ab3550_setup(ab); - if (err) - goto exit_no_setup; - - INIT_WORK(&ab->mask_work, ab3550_mask_work); - - for (i = 0; i < ab3550_plf_data->irq.count; i++) { - unsigned int irq; - - irq = ab3550_plf_data->irq.base + i; - irq_set_chip_data(irq, ab); - irq_set_chip_and_handler(irq, &ab3550_irq_chip, - handle_simple_irq); - irq_set_nested_thread(irq, 1); -#ifdef CONFIG_ARM - set_irq_flags(irq, IRQF_VALID); -#else - irq_set_noprobe(irq); -#endif - } - - err = request_threaded_irq(client->irq, NULL, ab3550_irq_handler, - IRQF_ONESHOT, "ab3550-core", ab); - /* This real unpredictable IRQ is of course sampled for entropy */ - rand_initialize_irq(client->irq); - - if (err) - goto exit_no_irq; - - err = abx500_register_ops(&client->dev, &ab3550_ops); - if (err) - goto exit_no_ops; - - /* Set up and register the platform devices. */ - for (i = 0; i < AB3550_NUM_DEVICES; i++) { - ab3550_devs[i].platform_data = ab3550_plf_data->dev_data[i]; - ab3550_devs[i].pdata_size = ab3550_plf_data->dev_data_sz[i]; - } - - err = mfd_add_devices(&client->dev, 0, ab3550_devs, - ARRAY_SIZE(ab3550_devs), NULL, - ab3550_plf_data->irq.base); - - ab3550_setup_debugfs(ab); - - return 0; - -exit_no_ops: -exit_no_irq: -exit_no_setup: -exit_no_dummy_client: - /* Unregister the dummy i2c clients. */ - while (--num_i2c_clients) - i2c_unregister_device(ab->i2c_client[num_i2c_clients]); -exit_no_detect: - kfree(ab); - return err; -} - -static int __exit ab3550_remove(struct i2c_client *client) -{ - struct ab3550 *ab = i2c_get_clientdata(client); - int num_i2c_clients = AB3550_NUM_BANKS; - - mfd_remove_devices(&client->dev); - ab3550_remove_debugfs(); - - while (--num_i2c_clients) - i2c_unregister_device(ab->i2c_client[num_i2c_clients]); - - /* - * At this point, all subscribers should have unregistered - * their notifiers so deactivate IRQ - */ - free_irq(client->irq, ab); - kfree(ab); - return 0; -} - -static const struct i2c_device_id ab3550_id[] = { - {AB3550_NAME_STRING, 0}, - {} -}; -MODULE_DEVICE_TABLE(i2c, ab3550_id); - -static struct i2c_driver ab3550_driver = { - .driver = { - .name = AB3550_NAME_STRING, - .owner = THIS_MODULE, - }, - .id_table = ab3550_id, - .probe = ab3550_probe, - .remove = __exit_p(ab3550_remove), -}; - -static int __init ab3550_i2c_init(void) -{ - return i2c_add_driver(&ab3550_driver); -} - -static void __exit ab3550_i2c_exit(void) -{ - i2c_del_driver(&ab3550_driver); -} - -subsys_initcall(ab3550_i2c_init); -module_exit(ab3550_i2c_exit); - -MODULE_AUTHOR("Mattias Wallin <mattias.wallin@stericsson.com>"); -MODULE_DESCRIPTION("AB3550 core driver"); -MODULE_LICENSE("GPL"); diff --git a/drivers/mfd/ab5500-core.c b/drivers/mfd/ab5500-core.c new file mode 100644 index 0000000..4175544 --- /dev/null +++ b/drivers/mfd/ab5500-core.c @@ -0,0 +1,1439 @@ +/* + * Copyright (C) 2007-2011 ST-Ericsson + * License terms: GNU General Public License (GPL) version 2 + * Low-level core for exclusive access to the AB5500 IC on the I2C bus + * and some basic chip-configuration. + * Author: Bengt Jonsson <bengt.g.jonsson@stericsson.com> + * Author: Mattias Nilsson <mattias.i.nilsson@stericsson.com> + * Author: Mattias Wallin <mattias.wallin@stericsson.com> + * Author: Rickard Andersson <rickard.andersson@stericsson.com> + * Author: Karl Komierowski <karl.komierowski@stericsson.com> + * Author: Bibek Basu <bibek.basu@stericsson.com> + * + * TODO: Event handling with irq_chip. Waiting for PRCMU fw support. + */ + +#include <linux/mutex.h> +#include <linux/err.h> +#include <linux/platform_device.h> +#include <linux/slab.h> +#include <linux/device.h> +#include <linux/irq.h> +#include <linux/interrupt.h> +#include <linux/random.h> +#include <linux/mfd/ab5500/ab5500.h> +#include <linux/mfd/abx500.h> +#include <linux/list.h> +#include <linux/bitops.h> +#include <linux/spinlock.h> +#include <linux/mfd/core.h> +#include <linux/version.h> +#include <linux/mfd/db5500-prcmu.h> + +#include "ab5500-core.h" +#include "ab5500-debugfs.h" + +#define AB5500_NUM_EVENT_REG 23 +#define AB5500_IT_LATCH0_REG 0x40 +#define AB5500_IT_MASK0_REG 0x60 + +/* + * Permissible register ranges for reading and writing per device and bank. + * + * The ranges must be listed in increasing address order, and no overlaps are + * allowed. It is assumed that write permission implies read permission + * (i.e. only RO and RW permissions should be used). Ranges with write + * permission must not be split up. + */ + +#define NO_RANGE {.count = 0, .range = NULL,} +static struct ab5500_i2c_banks ab5500_bank_ranges[AB5500_NUM_DEVICES] = { + [AB5500_DEVID_USB] = { + .nbanks = 1, + .bank = (struct ab5500_i2c_ranges []) { + { + .bankid = AB5500_BANK_USB, + .nranges = 12, + .range = (struct ab5500_reg_range[]) { + { + .first = 0x01, + .last = 0x01, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x80, + .last = 0x83, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x87, + .last = 0x8A, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x8B, + .last = 0x8B, + .perm = AB5500_PERM_RO, + }, + { + .first = 0x91, + .last = 0x92, + .perm = AB5500_PERM_RO, + }, + { + .first = 0x93, + .last = 0x93, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x94, + .last = 0x94, + .perm = AB5500_PERM_RO, + }, + { + .first = 0xA8, + .last = 0xB0, + .perm = AB5500_PERM_RO, + }, + { + .first = 0xB2, + .last = 0xB2, + .perm = AB5500_PERM_RO, + }, + { + .first = 0xB4, + .last = 0xBC, + .perm = AB5500_PERM_RO, + }, + { + .first = 0xBF, + .last = 0xBF, + .perm = AB5500_PERM_RO, + }, + { + .first = 0xC1, + .last = 0xC5, + .perm = AB5500_PERM_RO, + }, + }, + }, + }, + }, + [AB5500_DEVID_ADC] = { + .nbanks = 1, + .bank = (struct ab5500_i2c_ranges []) { + { + .bankid = AB5500_BANK_ADC, + .nranges = 6, + .range = (struct ab5500_reg_range[]) { + { + .first = 0x1F, + .last = 0x22, + .perm = AB5500_PERM_RO, + }, + { + .first = 0x23, + .last = 0x24, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x26, + .last = 0x2D, + .perm = AB5500_PERM_RO, + }, + { + .first = 0x2F, + .last = 0x34, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x37, + .last = 0x57, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x58, + .last = 0x58, + .perm = AB5500_PERM_RO, + }, + }, + }, + }, + }, + [AB5500_DEVID_LEDS] = { + .nbanks = 1, + .bank = (struct ab5500_i2c_ranges []) { + { + .bankid = AB5500_BANK_LED, + .nranges = 1, + .range = (struct ab5500_reg_range[]) { + { + .first = 0x00, + .last = 0x0C, + .perm = AB5500_PERM_RW, + }, + }, + }, + }, + }, + [AB5500_DEVID_VIDEO] = { + .nbanks = 1, + .bank = (struct ab5500_i2c_ranges []) { + { + .bankid = AB5500_BANK_VDENC, + .nranges = 12, + .range = (struct ab5500_reg_range[]) { + { + .first = 0x00, + .last = 0x08, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x09, + .last = 0x09, + .perm = AB5500_PERM_RO, + }, + { + .first = 0x0A, + .last = 0x12, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x15, + .last = 0x19, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x1B, + .last = 0x21, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x27, + .last = 0x2C, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x41, + .last = 0x41, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x45, + .last = 0x5B, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x5D, + .last = 0x5D, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x69, + .last = 0x69, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x6C, + .last = 0x6D, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x80, + .last = 0x81, + .perm = AB5500_PERM_RW, + }, + }, + }, + }, + }, + [AB5500_DEVID_REGULATORS] = { + .nbanks = 2, + .bank = (struct ab5500_i2c_ranges []) { + { + .bankid = AB5500_BANK_STARTUP, + .nranges = 12, + .range = (struct ab5500_reg_range[]) { + { + .first = 0x00, + .last = 0x01, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x1F, + .last = 0x1F, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x2E, + .last = 0x2E, + .perm = AB5500_PERM_RO, + }, + { + .first = 0x2F, + .last = 0x30, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x50, + .last = 0x51, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x60, + .last = 0x61, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x66, + .last = 0x8A, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x8C, + .last = 0x96, + .perm = AB5500_PERM_RW, + }, + { + .first = 0xAA, + .last = 0xB4, + .perm = AB5500_PERM_RW, + }, + { + .first = 0xB7, + .last = 0xBF, + .perm = AB5500_PERM_RW, + }, + { + .first = 0xC1, + .last = 0xCA, + .perm = AB5500_PERM_RW, + }, + { + .first = 0xD3, + .last = 0xE0, + .perm = AB5500_PERM_RW, + }, + }, + }, + { + .bankid = AB5500_BANK_SIM_USBSIM, + .nranges = 1, + .range = (struct ab5500_reg_range[]) { + { + .first = 0x13, + .last = 0x19, + .perm = AB5500_PERM_RW, + }, + }, + }, + }, + }, + [AB5500_DEVID_SIM] = { + .nbanks = 1, + .bank = (struct ab5500_i2c_ranges []) { + { + .bankid = AB5500_BANK_SIM_USBSIM, + .nranges = 1, + .range = (struct ab5500_reg_range[]) { + { + .first = 0x13, + .last = 0x19, + .perm = AB5500_PERM_RW, + }, + }, + }, + }, + }, + [AB5500_DEVID_RTC] = { + .nbanks = 1, + .bank = (struct ab5500_i2c_ranges []) { + { + .bankid = AB5500_BANK_RTC, + .nranges = 2, + .range = (struct ab5500_reg_range[]) { + { + .first = 0x00, + .last = 0x04, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x06, + .last = 0x0C, + .perm = AB5500_PERM_RW, + }, + }, + }, + }, + }, + [AB5500_DEVID_CHARGER] = { + .nbanks = 1, + .bank = (struct ab5500_i2c_ranges []) { + { + .bankid = AB5500_BANK_CHG, + .nranges = 2, + .range = (struct ab5500_reg_range[]) { + { + .first = 0x11, + .last = 0x11, + .perm = AB5500_PERM_RO, + }, + { + .first = 0x12, + .last = 0x1B, + .perm = AB5500_PERM_RW, + }, + }, + }, + }, + }, + [AB5500_DEVID_FUELGAUGE] = { + .nbanks = 1, + .bank = (struct ab5500_i2c_ranges []) { + { + .bankid = AB5500_BANK_FG_BATTCOM_ACC, + .nranges = 2, + .range = (struct ab5500_reg_range[]) { + { + .first = 0x00, + .last = 0x0B, + .perm = AB5500_PERM_RO, + }, + { + .first = 0x0C, + .last = 0x10, + .perm = AB5500_PERM_RW, + }, + }, + }, + }, + }, + [AB5500_DEVID_VIBRATOR] = { + .nbanks = 1, + .bank = (struct ab5500_i2c_ranges []) { + { + .bankid = AB5500_BANK_VIBRA, + .nranges = 2, + .range = (struct ab5500_reg_range[]) { + { + .first = 0x10, + .last = 0x13, + .perm = AB5500_PERM_RW, + }, + { + .first = 0xFE, + .last = 0xFE, + .perm = AB5500_PERM_RW, + }, + }, + }, + }, + }, + [AB5500_DEVID_CODEC] = { + .nbanks = 1, + .bank = (struct ab5500_i2c_ranges []) { + { + .bankid = AB5500_BANK_AUDIO_HEADSETUSB, + .nranges = 2, + .range = (struct ab5500_reg_range[]) { + { + .first = 0x00, + .last = 0x48, + .perm = AB5500_PERM_RW, + }, + { + .first = 0xEB, + .last = 0xFB, + .perm = AB5500_PERM_RW, + }, + }, + }, + }, + }, + [AB5500_DEVID_POWER] = { + .nbanks = 2, + .bank = (struct ab5500_i2c_ranges []) { + { + .bankid = AB5500_BANK_STARTUP, + .nranges = 1, + .range = (struct ab5500_reg_range[]) { + { + .first = 0x30, + .last = 0x30, + .perm = AB5500_PERM_RW, + }, + }, + }, + { + .bankid = AB5500_BANK_VIT_IO_I2C_CLK_TST_OTP, + .nranges = 1, + .range = (struct ab5500_reg_range[]) { + { + .first = 0x01, + .last = 0x01, + .perm = AB5500_PERM_RW, + }, + }, + }, + }, + }, +}; + +#define AB5500_IRQ(bank, bit) ((bank) * 8 + (bit)) + +/* I appologize for the resource names beeing a mix of upper case + * and lower case but I want them to be exact as the documentation */ +static struct mfd_cell ab5500_devs[AB5500_NUM_DEVICES] = { + [AB5500_DEVID_LEDS] = { + .name = "ab5500-leds", + .id = AB5500_DEVID_LEDS, + }, + [AB5500_DEVID_POWER] = { + .name = "ab5500-power", + .id = AB5500_DEVID_POWER, + }, + [AB5500_DEVID_REGULATORS] = { + .name = "ab5500-regulator", + .id = AB5500_DEVID_REGULATORS, + }, + [AB5500_DEVID_SIM] = { + .name = "ab5500-sim", + .id = AB5500_DEVID_SIM, + .num_resources = 1, + .resources = (struct resource[]) { + { + .name = "SIMOFF", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(2, 0), /*rising*/ + .end = AB5500_IRQ(2, 1), /*falling*/ + }, + }, + }, + [AB5500_DEVID_RTC] = { + .name = "ab5500-rtc", + .id = AB5500_DEVID_RTC, + .num_resources = 1, + .resources = (struct resource[]) { + { + .name = "RTC_Alarm", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(1, 7), + .end = AB5500_IRQ(1, 7), + } + }, + }, + [AB5500_DEVID_CHARGER] = { + .name = "ab5500-charger", + .id = AB5500_DEVID_CHARGER, + }, + [AB5500_DEVID_ADC] = { + .name = "ab5500-adc", + .id = AB5500_DEVID_ADC, + .num_resources = 10, + .resources = (struct resource[]) { + { + .name = "TRIGGER-0", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(0, 0), + .end = AB5500_IRQ(0, 0), + }, + { + .name = "TRIGGER-1", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(0, 1), + .end = AB5500_IRQ(0, 1), + }, + { + .name = "TRIGGER-2", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(0, 2), + .end = AB5500_IRQ(0, 2), + }, + { + .name = "TRIGGER-3", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(0, 3), + .end = AB5500_IRQ(0, 3), + }, + { + .name = "TRIGGER-4", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(0, 4), + .end = AB5500_IRQ(0, 4), + }, + { + .name = "TRIGGER-5", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(0, 5), + .end = AB5500_IRQ(0, 5), + }, + { + .name = "TRIGGER-6", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(0, 6), + .end = AB5500_IRQ(0, 6), + }, + { + .name = "TRIGGER-7", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(0, 7), + .end = AB5500_IRQ(0, 7), + }, + { + .name = "TRIGGER-VBAT", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(0, 8), + .end = AB5500_IRQ(0, 8), + }, + { + .name = "TRIGGER-VBAT-TXON", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(0, 9), + .end = AB5500_IRQ(0, 9), + }, + }, + }, + [AB5500_DEVID_FUELGAUGE] = { + .name = "ab5500-fuelgauge", + .id = AB5500_DEVID_FUELGAUGE, + .num_resources = 6, + .resources = (struct resource[]) { + { + .name = "Batt_attach", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(7, 5), + .end = AB5500_IRQ(7, 5), + }, + { + .name = "Batt_removal", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(7, 6), + .end = AB5500_IRQ(7, 6), + }, + { + .name = "UART_framing", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(7, 7), + .end = AB5500_IRQ(7, 7), + }, + { + .name = "UART_overrun", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(8, 0), + .end = AB5500_IRQ(8, 0), + }, + { + .name = "UART_Rdy_RX", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(8, 1), + .end = AB5500_IRQ(8, 1), + }, + { + .name = "UART_Rdy_TX", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(8, 2), + .end = AB5500_IRQ(8, 2), + }, + }, + }, + [AB5500_DEVID_VIBRATOR] = { + .name = "ab5500-vibrator", + .id = AB5500_DEVID_VIBRATOR, + }, + [AB5500_DEVID_CODEC] = { + .name = "ab5500-codec", + .id = AB5500_DEVID_CODEC, + .num_resources = 3, + .resources = (struct resource[]) { + { + .name = "audio_spkr1_ovc", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(9, 5), + .end = AB5500_IRQ(9, 5), + }, + { + .name = "audio_plllocked", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(9, 6), + .end = AB5500_IRQ(9, 6), + }, + { + .name = "audio_spkr2_ovc", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(17, 4), + .end = AB5500_IRQ(17, 4), + }, + }, + }, + [AB5500_DEVID_USB] = { + .name = "ab5500-usb", + .id = AB5500_DEVID_USB, + .num_resources = 36, + .resources = (struct resource[]) { + { + .name = "Link_Update", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(22, 1), + .end = AB5500_IRQ(22, 1), + }, + { + .name = "DCIO", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(8, 3), + .end = AB5500_IRQ(8, 4), + }, + { + .name = "VBUS_R", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(8, 5), + .end = AB5500_IRQ(8, 5), + }, + { + .name = "VBUS_F", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(8, 6), + .end = AB5500_IRQ(8, 6), + }, + { + .name = "CHGstate_10_PCVBUSchg", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(8, 7), + .end = AB5500_IRQ(8, 7), + }, + { + .name = "DCIOreverse_ovc", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(9, 0), + .end = AB5500_IRQ(9, 0), + }, + { + .name = "USBCharDetDone", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(9, 1), + .end = AB5500_IRQ(9, 1), + }, + { + .name = "DCIO_no_limit", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(9, 2), + .end = AB5500_IRQ(9, 2), + }, + { + .name = "USB_suspend", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(9, 3), + .end = AB5500_IRQ(9, 3), + }, + { + .name = "DCIOreverse_fwdcurrent", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(9, 4), + .end = AB5500_IRQ(9, 4), + }, + { + .name = "Vbus_Imeasmax_change", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(9, 5), + .end = AB5500_IRQ(9, 6), + }, + { + .name = "OVV", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(14, 5), + .end = AB5500_IRQ(14, 5), + }, + { + .name = "USBcharging_NOTok", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(15, 3), + .end = AB5500_IRQ(15, 3), + }, + { + .name = "usb_adp_sensoroff", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(15, 6), + .end = AB5500_IRQ(15, 6), + }, + { + .name = "usb_adp_probeplug", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(15, 7), + .end = AB5500_IRQ(15, 7), + }, + { + .name = "usb_adp_sinkerror", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(16, 0), + .end = AB5500_IRQ(16, 6), + }, + { + .name = "usb_adp_sourceerror", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(16, 1), + .end = AB5500_IRQ(16, 1), + }, + { + .name = "usb_idgnd_r", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(16, 2), + .end = AB5500_IRQ(16, 2), + }, + { + .name = "usb_idgnd_f", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(16, 3), + .end = AB5500_IRQ(16, 3), + }, + { + .name = "usb_iddetR1", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(16, 4), + .end = AB5500_IRQ(16, 5), + }, + { + .name = "usb_iddetR2", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(16, 6), + .end = AB5500_IRQ(16, 7), + }, + { + .name = "usb_iddetR3", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(17, 0), + .end = AB5500_IRQ(17, 1), + }, + { + .name = "usb_iddetR4", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(17, 2), + .end = AB5500_IRQ(17, 3), + }, + { + .name = "CharTempWindowOk", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(17, 7), + .end = AB5500_IRQ(18, 0), + }, + { + .name = "USB_SprDetect", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(18, 1), + .end = AB5500_IRQ(18, 1), + }, + { + .name = "usb_adp_probe_unplug", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(18, 2), + .end = AB5500_IRQ(18, 2), + }, + { + .name = "VBUSChDrop", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(18, 3), + .end = AB5500_IRQ(18, 4), + }, + { + .name = "dcio_char_rec_done", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(18, 5), + .end = AB5500_IRQ(18, 5), + }, + { + .name = "Charging_stopped_by_temp", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(18, 6), + .end = AB5500_IRQ(18, 6), + }, + { + .name = "CHGstate_11_SafeModeVBUS", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(21, 1), + .end = AB5500_IRQ(21, 2), + }, + { + .name = "CHGstate_12_comletedVBUS", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(21, 2), + .end = AB5500_IRQ(21, 2), + }, + { + .name = "CHGstate_13_completedVBUS", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(21, 3), + .end = AB5500_IRQ(21, 3), + }, + { + .name = "CHGstate_14_FullChgDCIO", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(21, 4), + .end = AB5500_IRQ(21, 4), + }, + { + .name = "CHGstate_15_SafeModeDCIO", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(21, 5), + .end = AB5500_IRQ(21, 5), + }, + { + .name = "CHGstate_16_OFFsuspendDCIO", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(21, 6), + .end = AB5500_IRQ(21, 6), + }, + { + .name = "CHGstate_17_completedDCIO", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(21, 7), + .end = AB5500_IRQ(21, 7), + }, + }, + }, + [AB5500_DEVID_OTP] = { + .name = "ab5500-otp", + .id = AB5500_DEVID_OTP, + }, + [AB5500_DEVID_VIDEO] = { + .name = "ab5500-video", + .id = AB5500_DEVID_VIDEO, + .num_resources = 1, + .resources = (struct resource[]) { + { + .name = "plugTVdet", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(22, 2), + .end = AB5500_IRQ(22, 2), + }, + }, + }, + [AB5500_DEVID_DBIECI] = { + .name = "ab5500-dbieci", + .id = AB5500_DEVID_DBIECI, + .num_resources = 10, + .resources = (struct resource[]) { + { + .name = "COLL", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(14, 0), + .end = AB5500_IRQ(14, 0), + }, + { + .name = "RESERR", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(14, 1), + .end = AB5500_IRQ(14, 1), + }, + { + .name = "FRAERR", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(14, 2), + .end = AB5500_IRQ(14, 2), + }, + { + .name = "COMERR", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(14, 3), + .end = AB5500_IRQ(14, 3), + }, + { + .name = "BSI_indicator", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(14, 4), + .end = AB5500_IRQ(14, 4), + }, + { + .name = "SPDSET", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(14, 6), + .end = AB5500_IRQ(14, 6), + }, + { + .name = "DSENT", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(14, 7), + .end = AB5500_IRQ(14, 7), + }, + { + .name = "DREC", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(15, 0), + .end = AB5500_IRQ(15, 0), + }, + { + .name = "ACCINT", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(15, 1), + .end = AB5500_IRQ(15, 1), + }, + { + .name = "NOPINT", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(15, 2), + .end = AB5500_IRQ(15, 2), + }, + }, + }, + [AB5500_DEVID_ONSWA] = { + .name = "ab5500-onswa", + .id = AB5500_DEVID_ONSWA, + .num_resources = 2, + .resources = (struct resource[]) { + { + .name = "ONSWAn_rising", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(1, 3), + .end = AB5500_IRQ(1, 3), + }, + { + .name = "ONSWAn_falling", + .flags = IORESOURCE_IRQ, + .start = AB5500_IRQ(1, 4), + .end = AB5500_IRQ(1, 4), + }, + }, + }, +}; + +/* + * Functionality for getting/setting register values. + */ +int ab5500_get_register_interruptible_raw(struct ab5500 *ab, + u8 bank, u8 reg, + u8 *value) +{ + int err; + + if (bank >= AB5500_NUM_BANKS) + return -EINVAL; + + err = mutex_lock_interruptible(&ab->access_mutex); + if (err) + return err; + err = db5500_prcmu_abb_read(bankinfo[bank].slave_addr, reg, value, 1); + + mutex_unlock(&ab->access_mutex); + return err; +} + +static int get_register_page_interruptible(struct ab5500 *ab, u8 bank, + u8 first_reg, u8 *regvals, u8 numregs) +{ + int err; + + if (bank >= AB5500_NUM_BANKS) + return -EINVAL; + + err = mutex_lock_interruptible(&ab->access_mutex); + if (err) + return err; + + while (numregs) { + /* The hardware limit for get page is 4 */ + u8 curnum = min_t(u8, numregs, 4u); + + err = db5500_prcmu_abb_read(bankinfo[bank].slave_addr, + first_reg, regvals, curnum); + if (err) + goto out; + + numregs -= curnum; + first_reg += curnum; + regvals += curnum; + } + +out: + mutex_unlock(&ab->access_mutex); + return err; +} + +int ab5500_mask_and_set_register_interruptible_raw(struct ab5500 *ab, u8 bank, + u8 reg, u8 bitmask, u8 bitvalues) +{ + int err = 0; + + if (bank >= AB5500_NUM_BANKS) + return -EINVAL; + + if (bitmask) { + u8 buf; + + err = mutex_lock_interruptible(&ab->access_mutex); + if (err) + return err; + + if (bitmask == 0xFF) /* No need to read in this case. */ + buf = bitvalues; + else { /* Read and modify the register value. */ + err = db5500_prcmu_abb_read(bankinfo[bank].slave_addr, + reg, &buf, 1); + if (err) + return err; + + buf = ((~bitmask & buf) | (bitmask & bitvalues)); + } + /* Write the new value. */ + err = db5500_prcmu_abb_write(bankinfo[bank].slave_addr, reg, + &buf, 1); + + mutex_unlock(&ab->access_mutex); + } + return err; +} + +static int +set_register_interruptible(struct ab5500 *ab, u8 bank, u8 reg, u8 value) +{ + return ab5500_mask_and_set_register_interruptible_raw(ab, bank, reg, + 0xff, value); +} + +/* + * Read/write permission checking functions. + */ +static const struct ab5500_i2c_ranges *get_bankref(u8 devid, u8 bank) +{ + u8 i; + + if (devid < AB5500_NUM_DEVICES) { + for (i = 0; i < ab5500_bank_ranges[devid].nbanks; i++) { + if (ab5500_bank_ranges[devid].bank[i].bankid == bank) + return &ab5500_bank_ranges[devid].bank[i]; + } + } + return NULL; +} + +static bool page_write_allowed(u8 devid, u8 bank, u8 first_reg, u8 last_reg) +{ + u8 i; /* range loop index */ + const struct ab5500_i2c_ranges *bankref; + + bankref = get_bankref(devid, bank); + if (bankref == NULL || last_reg < first_reg) + return false; + + for (i = 0; i < bankref->nranges; i++) { + if (first_reg < bankref->range[i].first) + break; + if ((last_reg <= bankref->range[i].last) && + (bankref->range[i].perm & AB5500_PERM_WR)) + return true; + } + return false; +} + +static bool reg_write_allowed(u8 devid, u8 bank, u8 reg) +{ + return page_write_allowed(devid, bank, reg, reg); +} + +static bool page_read_allowed(u8 devid, u8 bank, u8 first_reg, u8 last_reg) +{ + u8 i; + const struct ab5500_i2c_ranges *bankref; + + bankref = get_bankref(devid, bank); + if (bankref == NULL || last_reg < first_reg) + return false; + + + /* Find the range (if it exists in the list) that includes first_reg. */ + for (i = 0; i < bankref->nranges; i++) { + if (first_reg < bankref->range[i].first) + return false; + if (first_reg <= bankref->range[i].last) + break; + } + /* Make sure that the entire range up to and including last_reg is + * readable. This may span several of the ranges in the list. + */ + while ((i < bankref->nranges) && + (bankref->range[i].perm & AB5500_PERM_RD)) { + if (last_reg <= bankref->range[i].last) + return true; + if ((++i >= bankref->nranges) || + (bankref->range[i].first != + (bankref->range[i - 1].last + 1))) { + break; + } + } + return false; +} + +static bool reg_read_allowed(u8 devid, u8 bank, u8 reg) +{ + return page_read_allowed(devid, bank, reg, reg); +} + + +/* + * The exported register access functionality. + */ +static int ab5500_get_chip_id(struct device *dev) +{ + struct ab5500 *ab = dev_get_drvdata(dev->parent); + + return (int)ab->chip_id; +} + +static int ab5500_mask_and_set_register_interruptible(struct device *dev, + u8 bank, u8 reg, u8 bitmask, u8 bitvalues) +{ + struct ab5500 *ab; + struct platform_device *pdev = to_platform_device(dev); + + if ((AB5500_NUM_BANKS <= bank) || + !reg_write_allowed(pdev->id, bank, reg)) + return -EINVAL; + + ab = dev_get_drvdata(dev->parent); + return ab5500_mask_and_set_register_interruptible_raw(ab, bank, reg, + bitmask, bitvalues); +} + +static int ab5500_set_register_interruptible(struct device *dev, u8 bank, + u8 reg, u8 value) +{ + return ab5500_mask_and_set_register_interruptible(dev, bank, reg, 0xFF, + value); +} + +static int ab5500_get_register_interruptible(struct device *dev, u8 bank, + u8 reg, u8 *value) +{ + struct ab5500 *ab; + struct platform_device *pdev = to_platform_device(dev); + + if ((AB5500_NUM_BANKS <= bank) || + !reg_read_allowed(pdev->id, bank, reg)) + return -EINVAL; + + ab = dev_get_drvdata(dev->parent); + return ab5500_get_register_interruptible_raw(ab, bank, reg, value); +} + +static int ab5500_get_register_page_interruptible(struct device *dev, u8 bank, + u8 first_reg, u8 *regvals, u8 numregs) +{ + struct ab5500 *ab; + struct platform_device *pdev = to_platform_device(dev); + + if ((AB5500_NUM_BANKS <= bank) || + !page_read_allowed(pdev->id, bank, + first_reg, (first_reg + numregs - 1))) + return -EINVAL; + + ab = dev_get_drvdata(dev->parent); + return get_register_page_interruptible(ab, bank, first_reg, regvals, + numregs); +} + +static int +ab5500_event_registers_startup_state_get(struct device *dev, u8 *event) +{ + struct ab5500 *ab; + + ab = dev_get_drvdata(dev->parent); + if (!ab->startup_events_read) + return -EAGAIN; /* Try again later */ + + memcpy(event, ab->startup_events, AB5500_NUM_EVENT_REG); + return 0; +} + +static struct abx500_ops ab5500_ops = { + .get_chip_id = ab5500_get_chip_id, + .get_register = ab5500_get_register_interruptible, + .set_register = ab5500_set_register_interruptible, + .get_register_page = ab5500_get_register_page_interruptible, + .set_register_page = NULL, + .mask_and_set_register = ab5500_mask_and_set_register_interruptible, + .event_registers_startup_state_get = + ab5500_event_registers_startup_state_get, + .startup_irq_enabled = NULL, +}; + +/* + * ab5500_setup : Basic set-up, datastructure creation/destruction + * and I2C interface.This sets up a default config + * in the AB5500 chip so that it will work as expected. + * @ab : Pointer to ab5500 structure + * @settings : Pointer to struct abx500_init_settings + * @size : Size of init data + */ +static int __init ab5500_setup(struct ab5500 *ab, + struct abx500_init_settings *settings, unsigned int size) +{ + int err = 0; + int i; + + for (i = 0; i < size; i++) { + err = ab5500_mask_and_set_register_interruptible_raw(ab, + settings[i].bank, + settings[i].reg, + 0xFF, settings[i].setting); + if (err) + goto exit_no_setup; + + /* If event mask register update the event mask in ab5500 */ + if ((settings[i].bank == AB5500_BANK_IT) && + (AB5500_MASK_BASE <= settings[i].reg) && + (settings[i].reg <= AB5500_MASK_END)) { + ab->mask[settings[i].reg - AB5500_MASK_BASE] = + settings[i].setting; + } + } +exit_no_setup: + return err; +} + +struct ab_family_id { + u8 id; + char *name; +}; + +static const struct ab_family_id ids[] __initdata = { + /* AB5500 */ + { + .id = AB5500_1_0, + .name = "1.0" + }, + { + .id = AB5500_1_1, + .name = "1.1" + }, + /* Terminator */ + { + .id = 0x00, + } +}; + +static int __init ab5500_probe(struct platform_device *pdev) +{ + struct ab5500 *ab; + struct ab5500_platform_data *ab5500_plf_data = + pdev->dev.platform_data; + int err; + int i; + + ab = kzalloc(sizeof(struct ab5500), GFP_KERNEL); + if (!ab) { + dev_err(&pdev->dev, + "could not allocate ab5500 device\n"); + return -ENOMEM; + } + + /* Initialize data structure */ + mutex_init(&ab->access_mutex); + mutex_init(&ab->irq_lock); + ab->dev = &pdev->dev; + + platform_set_drvdata(pdev, ab); + + /* Read chip ID register */ + err = ab5500_get_register_interruptible_raw(ab, + AB5500_BANK_VIT_IO_I2C_CLK_TST_OTP, + AB5500_CHIP_ID, &ab->chip_id); + if (err) { + dev_err(&pdev->dev, "could not communicate with the analog " + "baseband chip\n"); + goto exit_no_detect; + } + + for (i = 0; ids[i].id != 0x0; i++) { + if (ids[i].id == ab->chip_id) { + snprintf(&ab->chip_name[0], sizeof(ab->chip_name) - 1, + "AB5500 %s", ids[i].name); + break; + } + } + if (ids[i].id == 0x0) { + dev_err(&pdev->dev, "unknown analog baseband chip id: 0x%x\n", + ab->chip_id); + dev_err(&pdev->dev, "driver not started!\n"); + goto exit_no_detect; + } + + /* Clear and mask all interrupts */ + for (i = 0; i < AB5500_NUM_IRQ_REGS; i++) { + u8 latchreg = AB5500_IT_LATCH0_REG + i; + u8 maskreg = AB5500_IT_MASK0_REG + i; + u8 val; + + ab5500_get_register_interruptible_raw(ab, AB5500_BANK_IT, + latchreg, &val); + set_register_interruptible(ab, AB5500_BANK_IT, maskreg, 0xff); + ab->mask[i] = ab->oldmask[i] = 0xff; + } + + err = abx500_register_ops(&pdev->dev, &ab5500_ops); + if (err) { + dev_err(&pdev->dev, "ab5500_register ops error\n"); + goto exit_no_detect; + } + + /* Set up and register the platform devices. */ + for (i = 0; i < AB5500_NUM_DEVICES; i++) { + ab5500_devs[i].platform_data = ab5500_plf_data->dev_data[i]; + ab5500_devs[i].pdata_size = + sizeof(ab5500_plf_data->dev_data[i]); + } + + err = mfd_add_devices(&pdev->dev, 0, ab5500_devs, + ARRAY_SIZE(ab5500_devs), NULL, + ab5500_plf_data->irq.base); + if (err) { + dev_err(&pdev->dev, "ab5500_mfd_add_device error\n"); + goto exit_no_detect; + } + + err = ab5500_setup(ab, ab5500_plf_data->init_settings, + ab5500_plf_data->init_settings_sz); + if (err) { + dev_err(&pdev->dev, "ab5500_setup error\n"); + goto exit_no_detect; + } + + ab5500_setup_debugfs(ab); + + dev_info(&pdev->dev, "detected AB chip: %s\n", &ab->chip_name[0]); + return 0; + +exit_no_detect: + kfree(ab); + return err; +} + +static int __exit ab5500_remove(struct platform_device *pdev) +{ + struct ab5500 *ab = platform_get_drvdata(pdev); + + ab5500_remove_debugfs(); + mfd_remove_devices(&pdev->dev); + kfree(ab); + return 0; +} + +static struct platform_driver ab5500_driver = { + .driver = { + .name = "ab5500-core", + .owner = THIS_MODULE, + }, + .remove = __exit_p(ab5500_remove), +}; + +static int __init ab5500_core_init(void) +{ + return platform_driver_probe(&ab5500_driver, ab5500_probe); +} + +static void __exit ab5500_core_exit(void) +{ + platform_driver_unregister(&ab5500_driver); +} + +subsys_initcall(ab5500_core_init); +module_exit(ab5500_core_exit); + +MODULE_AUTHOR("Mattias Wallin <mattias.wallin@stericsson.com>"); +MODULE_DESCRIPTION("AB5500 core driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/mfd/ab5500-core.h b/drivers/mfd/ab5500-core.h new file mode 100644 index 0000000..63b30b1 --- /dev/null +++ b/drivers/mfd/ab5500-core.h @@ -0,0 +1,87 @@ +/* + * Copyright (C) 2011 ST-Ericsson + * License terms: GNU General Public License (GPL) version 2 + * Shared definitions and data structures for the AB5500 MFD driver + */ + +/* Read/write operation values. */ +#define AB5500_PERM_RD (0x01) +#define AB5500_PERM_WR (0x02) + +/* Read/write permissions. */ +#define AB5500_PERM_RO (AB5500_PERM_RD) +#define AB5500_PERM_RW (AB5500_PERM_RD | AB5500_PERM_WR) + +#define AB5500_MASK_BASE (0x60) +#define AB5500_MASK_END (0x79) +#define AB5500_CHIP_ID (0x20) + +/** + * struct ab5500_reg_range + * @first: the first address of the range + * @last: the last address of the range + * @perm: access permissions for the range + */ +struct ab5500_reg_range { + u8 first; + u8 last; + u8 perm; +}; + +/** + * struct ab5500_i2c_ranges + * @count: the number of ranges in the list + * @range: the list of register ranges + */ +struct ab5500_i2c_ranges { + u8 nranges; + u8 bankid; + const struct ab5500_reg_range *range; +}; + +/** + * struct ab5500_i2c_banks + * @count: the number of ranges in the list + * @range: the list of register ranges + */ +struct ab5500_i2c_banks { + u8 nbanks; + const struct ab5500_i2c_ranges *bank; +}; + +/** + * struct ab5500_bank + * @slave_addr: I2C slave_addr found in AB5500 specification + * @name: Documentation name of the bank. For reference + */ +struct ab5500_bank { + u8 slave_addr; + const char *name; +}; + +static const struct ab5500_bank bankinfo[AB5500_NUM_BANKS] = { + [AB5500_BANK_VIT_IO_I2C_CLK_TST_OTP] = { + AB5500_ADDR_VIT_IO_I2C_CLK_TST_OTP, "VIT_IO_I2C_CLK_TST_OTP"}, + [AB5500_BANK_VDDDIG_IO_I2C_CLK_TST] = { + AB5500_ADDR_VDDDIG_IO_I2C_CLK_TST, "VDDDIG_IO_I2C_CLK_TST"}, + [AB5500_BANK_VDENC] = {AB5500_ADDR_VDENC, "VDENC"}, + [AB5500_BANK_SIM_USBSIM] = {AB5500_ADDR_SIM_USBSIM, "SIM_USBSIM"}, + [AB5500_BANK_LED] = {AB5500_ADDR_LED, "LED"}, + [AB5500_BANK_ADC] = {AB5500_ADDR_ADC, "ADC"}, + [AB5500_BANK_RTC] = {AB5500_ADDR_RTC, "RTC"}, + [AB5500_BANK_STARTUP] = {AB5500_ADDR_STARTUP, "STARTUP"}, + [AB5500_BANK_DBI_ECI] = {AB5500_ADDR_DBI_ECI, "DBI-ECI"}, + [AB5500_BANK_CHG] = {AB5500_ADDR_CHG, "CHG"}, + [AB5500_BANK_FG_BATTCOM_ACC] = { + AB5500_ADDR_FG_BATTCOM_ACC, "FG_BATCOM_ACC"}, + [AB5500_BANK_USB] = {AB5500_ADDR_USB, "USB"}, + [AB5500_BANK_IT] = {AB5500_ADDR_IT, "IT"}, + [AB5500_BANK_VIBRA] = {AB5500_ADDR_VIBRA, "VIBRA"}, + [AB5500_BANK_AUDIO_HEADSETUSB] = { + AB5500_ADDR_AUDIO_HEADSETUSB, "AUDIO_HEADSETUSB"}, +}; + +int ab5500_get_register_interruptible_raw(struct ab5500 *ab, u8 bank, u8 reg, + u8 *value); +int ab5500_mask_and_set_register_interruptible_raw(struct ab5500 *ab, u8 bank, + u8 reg, u8 bitmask, u8 bitvalues); diff --git a/drivers/mfd/ab5500-debugfs.c b/drivers/mfd/ab5500-debugfs.c new file mode 100644 index 0000000..6be1fe6 --- /dev/null +++ b/drivers/mfd/ab5500-debugfs.c @@ -0,0 +1,806 @@ +/* + * Copyright (C) 2011 ST-Ericsson + * License terms: GNU General Public License (GPL) version 2 + * Debugfs support for the AB5500 MFD driver + */ + +#include <linux/debugfs.h> +#include <linux/seq_file.h> +#include <linux/mfd/ab5500/ab5500.h> +#include <linux/mfd/abx500.h> +#include <linux/uaccess.h> + +#include "ab5500-core.h" +#include "ab5500-debugfs.h" + +static struct ab5500_i2c_ranges ab5500_reg_ranges[AB5500_NUM_BANKS] = { + [AB5500_BANK_LED] = { + .bankid = AB5500_BANK_LED, + .nranges = 1, + .range = (struct ab5500_reg_range[]) { + { + .first = 0x00, + .last = 0x0C, + .perm = AB5500_PERM_RW, + }, + }, + }, + [AB5500_BANK_ADC] = { + .bankid = AB5500_BANK_ADC, + .nranges = 6, + .range = (struct ab5500_reg_range[]) { + { + .first = 0x1F, + .last = 0x22, + .perm = AB5500_PERM_RO, + }, + { + .first = 0x23, + .last = 0x24, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x26, + .last = 0x2D, + .perm = AB5500_PERM_RO, + }, + { + .first = 0x2F, + .last = 0x34, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x37, + .last = 0x57, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x58, + .last = 0x58, + .perm = AB5500_PERM_RO, + }, + }, + }, + [AB5500_BANK_RTC] = { + .bankid = AB5500_BANK_RTC, + .nranges = 2, + .range = (struct ab5500_reg_range[]) { + { + .first = 0x00, + .last = 0x04, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x06, + .last = 0x0C, + .perm = AB5500_PERM_RW, + }, + }, + }, + [AB5500_BANK_STARTUP] = { + .bankid = AB5500_BANK_STARTUP, + .nranges = 12, + .range = (struct ab5500_reg_range[]) { + { + .first = 0x00, + .last = 0x01, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x1F, + .last = 0x1F, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x2E, + .last = 0x2E, + .perm = AB5500_PERM_RO, + }, + { + .first = 0x2F, + .last = 0x30, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x50, + .last = 0x51, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x60, + .last = 0x61, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x66, + .last = 0x8A, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x8C, + .last = 0x96, + .perm = AB5500_PERM_RW, + }, + { + .first = 0xAA, + .last = 0xB4, + .perm = AB5500_PERM_RW, + }, + { + .first = 0xB7, + .last = 0xBF, + .perm = AB5500_PERM_RW, + }, + { + .first = 0xC1, + .last = 0xCA, + .perm = AB5500_PERM_RW, + }, + { + .first = 0xD3, + .last = 0xE0, + .perm = AB5500_PERM_RW, + }, + }, + }, + [AB5500_BANK_DBI_ECI] = { + .bankid = AB5500_BANK_DBI_ECI, + .nranges = 3, + .range = (struct ab5500_reg_range[]) { + { + .first = 0x00, + .last = 0x07, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x10, + .last = 0x10, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x13, + .last = 0x13, + .perm = AB5500_PERM_RW, + }, + }, + }, + [AB5500_BANK_CHG] = { + .bankid = AB5500_BANK_CHG, + .nranges = 2, + .range = (struct ab5500_reg_range[]) { + { + .first = 0x11, + .last = 0x11, + .perm = AB5500_PERM_RO, + }, + { + .first = 0x12, + .last = 0x1B, + .perm = AB5500_PERM_RW, + }, + }, + }, + [AB5500_BANK_FG_BATTCOM_ACC] = { + .bankid = AB5500_BANK_FG_BATTCOM_ACC, + .nranges = 2, + .range = (struct ab5500_reg_range[]) { + { + .first = 0x00, + .last = 0x0B, + .perm = AB5500_PERM_RO, + }, + { + .first = 0x0C, + .last = 0x10, + .perm = AB5500_PERM_RW, + }, + }, + }, + [AB5500_BANK_USB] = { + .bankid = AB5500_BANK_USB, + .nranges = 12, + .range = (struct ab5500_reg_range[]) { + { + .first = 0x01, + .last = 0x01, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x80, + .last = 0x83, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x87, + .last = 0x8A, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x8B, + .last = 0x8B, + .perm = AB5500_PERM_RO, + }, + { + .first = 0x91, + .last = 0x92, + .perm = AB5500_PERM_RO, + }, + { + .first = 0x93, + .last = 0x93, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x94, + .last = 0x94, + .perm = AB5500_PERM_RO, + }, + { + .first = 0xA8, + .last = 0xB0, + .perm = AB5500_PERM_RO, + }, + { + .first = 0xB2, + .last = 0xB2, + .perm = AB5500_PERM_RO, + }, + { + .first = 0xB4, + .last = 0xBC, + .perm = AB5500_PERM_RO, + }, + { + .first = 0xBF, + .last = 0xBF, + .perm = AB5500_PERM_RO, + }, + { + .first = 0xC1, + .last = 0xC5, + .perm = AB5500_PERM_RO, + }, + }, + }, + [AB5500_BANK_IT] = { + .bankid = AB5500_BANK_IT, + .nranges = 4, + .range = (struct ab5500_reg_range[]) { + { + .first = 0x00, + .last = 0x02, + .perm = AB5500_PERM_RO, + }, + { + .first = 0x20, + .last = 0x36, + .perm = AB5500_PERM_RO, + }, + { + .first = 0x40, + .last = 0x56, + .perm = AB5500_PERM_RO, + }, + { + .first = 0x60, + .last = 0x76, + .perm = AB5500_PERM_RO, + }, + }, + }, + [AB5500_BANK_VDDDIG_IO_I2C_CLK_TST] = { + .bankid = AB5500_BANK_VDDDIG_IO_I2C_CLK_TST, + .nranges = 7, + .range = (struct ab5500_reg_range[]) { + { + .first = 0x02, + .last = 0x02, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x12, + .last = 0x12, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x30, + .last = 0x34, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x40, + .last = 0x44, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x50, + .last = 0x54, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x60, + .last = 0x64, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x70, + .last = 0x74, + .perm = AB5500_PERM_RW, + }, + }, + }, + [AB5500_BANK_VIT_IO_I2C_CLK_TST_OTP] = { + .bankid = AB5500_BANK_VIT_IO_I2C_CLK_TST_OTP, + .nranges = 13, + .range = (struct ab5500_reg_range[]) { + { + .first = 0x01, + .last = 0x01, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x02, + .last = 0x02, + .perm = AB5500_PERM_RO, + }, + { + .first = 0x0D, + .last = 0x0F, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x1C, + .last = 0x1C, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x1E, + .last = 0x1E, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x20, + .last = 0x21, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x25, + .last = 0x25, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x28, + .last = 0x2A, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x30, + .last = 0x33, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x40, + .last = 0x43, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x50, + .last = 0x53, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x60, + .last = 0x63, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x70, + .last = 0x73, + .perm = AB5500_PERM_RW, + }, + }, + }, + [AB5500_BANK_VIBRA] = { + .bankid = AB5500_BANK_VIBRA, + .nranges = 2, + .range = (struct ab5500_reg_range[]) { + { + .first = 0x10, + .last = 0x13, + .perm = AB5500_PERM_RW, + }, + { + .first = 0xFE, + .last = 0xFE, + .perm = AB5500_PERM_RW, + }, + }, + }, + [AB5500_BANK_AUDIO_HEADSETUSB] = { + .bankid = AB5500_BANK_AUDIO_HEADSETUSB, + .nranges = 2, + .range = (struct ab5500_reg_range[]) { + { + .first = 0x00, + .last = 0x48, + .perm = AB5500_PERM_RW, + }, + { + .first = 0xEB, + .last = 0xFB, + .perm = AB5500_PERM_RW, + }, + }, + }, + [AB5500_BANK_SIM_USBSIM] = { + .bankid = AB5500_BANK_SIM_USBSIM, + .nranges = 1, + .range = (struct ab5500_reg_range[]) { + { + .first = 0x13, + .last = 0x19, + .perm = AB5500_PERM_RW, + }, + }, + }, + [AB5500_BANK_VDENC] = { + .bankid = AB5500_BANK_VDENC, + .nranges = 12, + .range = (struct ab5500_reg_range[]) { + { + .first = 0x00, + .last = 0x08, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x09, + .last = 0x09, + .perm = AB5500_PERM_RO, + }, + { + .first = 0x0A, + .last = 0x12, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x15, + .last = 0x19, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x1B, + .last = 0x21, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x27, + .last = 0x2C, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x41, + .last = 0x41, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x45, + .last = 0x5B, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x5D, + .last = 0x5D, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x69, + .last = 0x69, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x6C, + .last = 0x6D, + .perm = AB5500_PERM_RW, + }, + { + .first = 0x80, + .last = 0x81, + .perm = AB5500_PERM_RW, + }, + }, + }, +}; + +static int ab5500_registers_print(struct seq_file *s, void *p) +{ + struct ab5500 *ab = s->private; + unsigned int i; + u8 bank = (u8)ab->debug_bank; + + seq_printf(s, "ab5500 register values:\n"); + for (bank = 0; bank < AB5500_NUM_BANKS; bank++) { + seq_printf(s, " bank %u, %s (0x%x):\n", bank, + bankinfo[bank].name, + bankinfo[bank].slave_addr); + for (i = 0; i < ab5500_reg_ranges[bank].nranges; i++) { + u8 reg; + int err; + + for (reg = ab5500_reg_ranges[bank].range[i].first; + reg <= ab5500_reg_ranges[bank].range[i].last; + reg++) { + u8 value; + + err = ab5500_get_register_interruptible_raw(ab, + bank, reg, + &value); + if (err < 0) { + dev_err(ab->dev, "get_reg failed %d" + "bank 0x%x reg 0x%x\n", + err, bank, reg); + return err; + } + + err = seq_printf(s, "[%d/0x%02X]: 0x%02X\n", + bank, reg, value); + if (err < 0) { + dev_err(ab->dev, + "seq_printf overflow\n"); + /* + * Error is not returned here since + * the output is wanted in any case + */ + return 0; + } + } + } + } + return 0; +} + +static int ab5500_registers_open(struct inode *inode, struct file *file) +{ + return single_open(file, ab5500_registers_print, inode->i_private); +} + +static const struct file_operations ab5500_registers_fops = { + .open = ab5500_registers_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, + .owner = THIS_MODULE, +}; + +static int ab5500_bank_print(struct seq_file *s, void *p) +{ + struct ab5500 *ab = s->private; + + seq_printf(s, "%d\n", ab->debug_bank); + return 0; +} + +static int ab5500_bank_open(struct inode *inode, struct file *file) +{ + return single_open(file, ab5500_bank_print, inode->i_private); +} + +static ssize_t ab5500_bank_write(struct file *file, + const char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ab5500 *ab = ((struct seq_file *)(file->private_data))->private; + char buf[32]; + int buf_size; + unsigned long user_bank; + int err; + + /* Get userspace string and assure termination */ + buf_size = min(count, (sizeof(buf) - 1)); + if (copy_from_user(buf, user_buf, buf_size)) + return -EFAULT; + buf[buf_size] = 0; + + err = strict_strtoul(buf, 0, &user_bank); + if (err) + return -EINVAL; + + if (user_bank >= AB5500_NUM_BANKS) { + dev_err(ab->dev, + "debugfs error input > number of banks\n"); + return -EINVAL; + } + + ab->debug_bank = user_bank; + + return buf_size; +} + +static int ab5500_address_print(struct seq_file *s, void *p) +{ + struct ab5500 *ab = s->private; + + seq_printf(s, "0x%02X\n", ab->debug_address); + return 0; +} + +static int ab5500_address_open(struct inode *inode, struct file *file) +{ + return single_open(file, ab5500_address_print, inode->i_private); +} + +static ssize_t ab5500_address_write(struct file *file, + const char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ab5500 *ab = ((struct seq_file *)(file->private_data))->private; + char buf[32]; + int buf_size; + unsigned long user_address; + int err; + + /* Get userspace string and assure termination */ + buf_size = min(count, (sizeof(buf) - 1)); + if (copy_from_user(buf, user_buf, buf_size)) + return -EFAULT; + buf[buf_size] = 0; + + err = strict_strtoul(buf, 0, &user_address); + if (err) + return -EINVAL; + if (user_address > 0xff) { + dev_err(ab->dev, + "debugfs error input > 0xff\n"); + return -EINVAL; + } + ab->debug_address = user_address; + return buf_size; +} + +static int ab5500_val_print(struct seq_file *s, void *p) +{ + struct ab5500 *ab = s->private; + int err; + u8 regvalue; + + err = ab5500_get_register_interruptible_raw(ab, (u8)ab->debug_bank, + (u8)ab->debug_address, ®value); + if (err) { + dev_err(ab->dev, "get_reg failed %d, bank 0x%x" + ", reg 0x%x\n", err, ab->debug_bank, + ab->debug_address); + return -EINVAL; + } + seq_printf(s, "0x%02X\n", regvalue); + + return 0; +} + +static int ab5500_val_open(struct inode *inode, struct file *file) +{ + return single_open(file, ab5500_val_print, inode->i_private); +} + +static ssize_t ab5500_val_write(struct file *file, + const char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ab5500 *ab = ((struct seq_file *)(file->private_data))->private; + char buf[32]; + int buf_size; + unsigned long user_val; + int err; + u8 regvalue; + + /* Get userspace string and assure termination */ + buf_size = min(count, (sizeof(buf)-1)); + if (copy_from_user(buf, user_buf, buf_size)) + return -EFAULT; + buf[buf_size] = 0; + + err = strict_strtoul(buf, 0, &user_val); + if (err) + return -EINVAL; + if (user_val > 0xff) { + dev_err(ab->dev, + "debugfs error input > 0xff\n"); + return -EINVAL; + } + err = ab5500_mask_and_set_register_interruptible_raw( + ab, (u8)ab->debug_bank, + (u8)ab->debug_address, 0xFF, (u8)user_val); + if (err) + return -EINVAL; + + ab5500_get_register_interruptible_raw(ab, (u8)ab->debug_bank, + (u8)ab->debug_address, ®value); + if (err) + return -EINVAL; + + return buf_size; +} + +static const struct file_operations ab5500_bank_fops = { + .open = ab5500_bank_open, + .write = ab5500_bank_write, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, + .owner = THIS_MODULE, +}; + +static const struct file_operations ab5500_address_fops = { + .open = ab5500_address_open, + .write = ab5500_address_write, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, + .owner = THIS_MODULE, +}; + +static const struct file_operations ab5500_val_fops = { + .open = ab5500_val_open, + .write = ab5500_val_write, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, + .owner = THIS_MODULE, +}; + +static struct dentry *ab5500_dir; +static struct dentry *ab5500_reg_file; +static struct dentry *ab5500_bank_file; +static struct dentry *ab5500_address_file; +static struct dentry *ab5500_val_file; + +void __init ab5500_setup_debugfs(struct ab5500 *ab) +{ + ab->debug_bank = AB5500_BANK_VIT_IO_I2C_CLK_TST_OTP; + ab->debug_address = AB5500_CHIP_ID; + + ab5500_dir = debugfs_create_dir("ab5500", NULL); + if (!ab5500_dir) + goto exit_no_debugfs; + + ab5500_reg_file = debugfs_create_file("all-bank-registers", + S_IRUGO, ab5500_dir, ab, &ab5500_registers_fops); + if (!ab5500_reg_file) + goto exit_destroy_dir; + + ab5500_bank_file = debugfs_create_file("register-bank", + (S_IRUGO | S_IWUGO), ab5500_dir, ab, &ab5500_bank_fops); + if (!ab5500_bank_file) + goto exit_destroy_reg; + + ab5500_address_file = debugfs_create_file("register-address", + (S_IRUGO | S_IWUGO), ab5500_dir, ab, &ab5500_address_fops); + if (!ab5500_address_file) + goto exit_destroy_bank; + + ab5500_val_file = debugfs_create_file("register-value", + (S_IRUGO | S_IWUGO), ab5500_dir, ab, &ab5500_val_fops); + if (!ab5500_val_file) + goto exit_destroy_address; + + return; + +exit_destroy_address: + debugfs_remove(ab5500_address_file); +exit_destroy_bank: + debugfs_remove(ab5500_bank_file); +exit_destroy_reg: + debugfs_remove(ab5500_reg_file); +exit_destroy_dir: + debugfs_remove(ab5500_dir); +exit_no_debugfs: + dev_err(ab->dev, "failed to create debugfs entries.\n"); + return; +} + +void __exit ab5500_remove_debugfs(void) +{ + debugfs_remove(ab5500_val_file); + debugfs_remove(ab5500_address_file); + debugfs_remove(ab5500_bank_file); + debugfs_remove(ab5500_reg_file); + debugfs_remove(ab5500_dir); +} diff --git a/drivers/mfd/ab5500-debugfs.h b/drivers/mfd/ab5500-debugfs.h new file mode 100644 index 0000000..7330a9b --- /dev/null +++ b/drivers/mfd/ab5500-debugfs.h @@ -0,0 +1,22 @@ +/* + * Copyright (C) 2011 ST-Ericsson + * License terms: GNU General Public License (GPL) version 2 + * Debugfs interface to the AB5500 core driver + */ + +#ifdef CONFIG_DEBUG_FS + +void ab5500_setup_debugfs(struct ab5500 *ab); +void ab5500_remove_debugfs(void); + +#else /* !CONFIG_DEBUG_FS */ + +static inline void ab5500_setup_debugfs(struct ab5500 *ab) +{ +} + +static inline void ab5500_remove_debugfs(void) +{ +} + +#endif diff --git a/drivers/mfd/ab8500-core.c b/drivers/mfd/ab8500-core.c index 387705e..1e91738 100644 --- a/drivers/mfd/ab8500-core.c +++ b/drivers/mfd/ab8500-core.c @@ -92,6 +92,8 @@ #define AB8500_REV_REG 0x80 #define AB8500_SWITCH_OFF_STATUS 0x00 +#define AB8500_TURN_ON_STATUS 0x00 + /* * Map interrupt numbers to the LATCH and MASK register offsets, Interrupt * numbers are indexed into this array with (num / 8). @@ -293,6 +295,7 @@ static struct irq_chip ab8500_irq_chip = { .irq_bus_lock = ab8500_irq_lock, .irq_bus_sync_unlock = ab8500_irq_sync_unlock, .irq_mask = ab8500_irq_mask, + .irq_disable = ab8500_irq_mask, .irq_unmask = ab8500_irq_unmask, }; @@ -811,12 +814,40 @@ static ssize_t show_switch_off_status(struct device *dev, return sprintf(buf, "%#x\n", value); } +/* + * ab8500 has turned on due to (TURN_ON_STATUS): + * 0x01 PORnVbat + * 0x02 PonKey1dbF + * 0x04 PonKey2dbF + * 0x08 RTCAlarm + * 0x10 MainChDet + * 0x20 VbusDet + * 0x40 UsbIDDetect + * 0x80 Reserved + */ +static ssize_t show_turn_on_status(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int ret; + u8 value; + struct ab8500 *ab8500; + + ab8500 = dev_get_drvdata(dev); + ret = get_register_interruptible(ab8500, AB8500_SYS_CTRL1_BLOCK, + AB8500_TURN_ON_STATUS, &value); + if (ret < 0) + return ret; + return sprintf(buf, "%#x\n", value); +} + static DEVICE_ATTR(chip_id, S_IRUGO, show_chip_id, NULL); static DEVICE_ATTR(switch_off_status, S_IRUGO, show_switch_off_status, NULL); +static DEVICE_ATTR(turn_on_status, S_IRUGO, show_turn_on_status, NULL); static struct attribute *ab8500_sysfs_entries[] = { &dev_attr_chip_id.attr, &dev_attr_switch_off_status.attr, + &dev_attr_turn_on_status.attr, NULL, }; @@ -843,11 +874,11 @@ int __devinit ab8500_init(struct ab8500 *ab8500) return ret; switch (value) { - case AB8500_CUTEARLY: case AB8500_CUT1P0: case AB8500_CUT1P1: case AB8500_CUT2P0: case AB8500_CUT3P0: + case AB8500_CUT3P3: dev_info(ab8500->dev, "detected chip, revision: %#x\n", value); break; default: diff --git a/drivers/mfd/ab8500-gpadc.c b/drivers/mfd/ab8500-gpadc.c index f16afb2..e985d17 100644 --- a/drivers/mfd/ab8500-gpadc.c +++ b/drivers/mfd/ab8500-gpadc.c @@ -143,12 +143,15 @@ struct ab8500_gpadc *ab8500_gpadc_get(char *name) } EXPORT_SYMBOL(ab8500_gpadc_get); -static int ab8500_gpadc_ad_to_voltage(struct ab8500_gpadc *gpadc, u8 input, +/** + * ab8500_gpadc_ad_to_voltage() - Convert a raw ADC value to a voltage + */ +int ab8500_gpadc_ad_to_voltage(struct ab8500_gpadc *gpadc, u8 channel, int ad_value) { int res; - switch (input) { + switch (channel) { case MAIN_CHARGER_V: /* For some reason we don't have calibrated data */ if (!gpadc->cal_data[ADC_INPUT_VMAIN].gain) { @@ -232,18 +235,46 @@ static int ab8500_gpadc_ad_to_voltage(struct ab8500_gpadc *gpadc, u8 input, } return res; } +EXPORT_SYMBOL(ab8500_gpadc_ad_to_voltage); /** * ab8500_gpadc_convert() - gpadc conversion - * @input: analog input to be converted to digital data + * @channel: analog channel to be converted to digital data * * This function converts the selected analog i/p to digital * data. */ -int ab8500_gpadc_convert(struct ab8500_gpadc *gpadc, u8 input) +int ab8500_gpadc_convert(struct ab8500_gpadc *gpadc, u8 channel) +{ + int ad_value; + int voltage; + + ad_value = ab8500_gpadc_read_raw(gpadc, channel); + if (ad_value < 0) { + dev_err(gpadc->dev, "GPADC raw value failed ch: %d\n", channel); + return ad_value; + } + + voltage = ab8500_gpadc_ad_to_voltage(gpadc, channel, ad_value); + + if (voltage < 0) + dev_err(gpadc->dev, "GPADC to voltage conversion failed ch:" + " %d AD: 0x%x\n", channel, ad_value); + + return voltage; +} +EXPORT_SYMBOL(ab8500_gpadc_convert); + +/** + * ab8500_gpadc_read_raw() - gpadc read + * @channel: analog channel to be read + * + * This function obtains the raw ADC value, this then needs + * to be converted by calling ab8500_gpadc_ad_to_voltage() + */ +int ab8500_gpadc_read_raw(struct ab8500_gpadc *gpadc, u8 channel) { int ret; - u16 data = 0; int looplimit = 0; u8 val, low_data, high_data; @@ -278,9 +309,9 @@ int ab8500_gpadc_convert(struct ab8500_gpadc *gpadc, u8 input) goto out; } - /* Select the input source and set average samples to 16 */ + /* Select the channel source and set average samples to 16 */ ret = abx500_set_register_interruptible(gpadc->dev, AB8500_GPADC, - AB8500_GPADC_CTRL2_REG, (input | SW_AVG_16)); + AB8500_GPADC_CTRL2_REG, (channel | SW_AVG_16)); if (ret < 0) { dev_err(gpadc->dev, "gpadc_conversion: set avg samples failed\n"); @@ -292,7 +323,7 @@ int ab8500_gpadc_convert(struct ab8500_gpadc *gpadc, u8 input) * charging current sense if it needed, ABB 3.0 needs some special * treatment too. */ - switch (input) { + switch (channel) { case MAIN_CHARGER_C: case USB_CHARGER_C: ret = abx500_mask_and_set_register_interruptible(gpadc->dev, @@ -359,7 +390,6 @@ int ab8500_gpadc_convert(struct ab8500_gpadc *gpadc, u8 input) goto out; } - data = (high_data << 8) | low_data; /* Disable GPADC */ ret = abx500_set_register_interruptible(gpadc->dev, AB8500_GPADC, AB8500_GPADC_CTRL1_REG, DIS_GPADC); @@ -370,8 +400,8 @@ int ab8500_gpadc_convert(struct ab8500_gpadc *gpadc, u8 input) /* Disable VTVout LDO this is required for GPADC */ regulator_disable(gpadc->regu); mutex_unlock(&gpadc->ab8500_gpadc_lock); - ret = ab8500_gpadc_ad_to_voltage(gpadc, input, data); - return ret; + + return (high_data << 8) | low_data; out: /* @@ -385,10 +415,10 @@ out: regulator_disable(gpadc->regu); mutex_unlock(&gpadc->ab8500_gpadc_lock); dev_err(gpadc->dev, - "gpadc_conversion: Failed to AD convert channel %d\n", input); + "gpadc_conversion: Failed to AD convert channel %d\n", channel); return ret; } -EXPORT_SYMBOL(ab8500_gpadc_convert); +EXPORT_SYMBOL(ab8500_gpadc_read_raw); /** * ab8500_bm_gpswadcconvend_handler() - isr for s/w gpadc conversion completion diff --git a/drivers/mfd/asic3.c b/drivers/mfd/asic3.c index c71ae09..3bd85bd 100644 --- a/drivers/mfd/asic3.c +++ b/drivers/mfd/asic3.c @@ -584,7 +584,7 @@ static int asic3_gpio_remove(struct platform_device *pdev) return gpiochip_remove(&asic->gpio); } -static int asic3_clk_enable(struct asic3 *asic, struct asic3_clk *clk) +static void asic3_clk_enable(struct asic3 *asic, struct asic3_clk *clk) { unsigned long flags; u32 cdex; @@ -596,8 +596,6 @@ static int asic3_clk_enable(struct asic3 *asic, struct asic3_clk *clk) asic3_write_register(asic, ASIC3_OFFSET(CLOCK, CDEX), cdex); } spin_unlock_irqrestore(&asic->lock, flags); - - return 0; } static void asic3_clk_disable(struct asic3 *asic, struct asic3_clk *clk) @@ -779,6 +777,8 @@ static struct mfd_cell asic3_cell_mmc = { .name = "tmio-mmc", .enable = asic3_mmc_enable, .disable = asic3_mmc_disable, + .suspend = asic3_mmc_disable, + .resume = asic3_mmc_enable, .platform_data = &asic3_mmc_data, .pdata_size = sizeof(asic3_mmc_data), .num_resources = ARRAY_SIZE(asic3_mmc_resources), @@ -811,24 +811,43 @@ static int asic3_leds_disable(struct platform_device *pdev) return 0; } +static int asic3_leds_suspend(struct platform_device *pdev) +{ + const struct mfd_cell *cell = mfd_get_cell(pdev); + struct asic3 *asic = dev_get_drvdata(pdev->dev.parent); + + while (asic3_gpio_get(&asic->gpio, ASIC3_GPIO(C, cell->id)) != 0) + msleep(1); + + asic3_clk_disable(asic, &asic->clocks[clock_ledn[cell->id]]); + + return 0; +} + static struct mfd_cell asic3_cell_leds[ASIC3_NUM_LEDS] = { [0] = { .name = "leds-asic3", .id = 0, .enable = asic3_leds_enable, .disable = asic3_leds_disable, + .suspend = asic3_leds_suspend, + .resume = asic3_leds_enable, }, [1] = { .name = "leds-asic3", .id = 1, .enable = asic3_leds_enable, .disable = asic3_leds_disable, + .suspend = asic3_leds_suspend, + .resume = asic3_leds_enable, }, [2] = { .name = "leds-asic3", .id = 2, .enable = asic3_leds_enable, .disable = asic3_leds_disable, + .suspend = asic3_leds_suspend, + .resume = asic3_leds_enable, }, }; @@ -949,6 +968,7 @@ static int __init asic3_probe(struct platform_device *pdev) goto out_unmap; } + asic->gpio.label = "asic3"; asic->gpio.base = pdata->gpio_base; asic->gpio.ngpio = ASIC3_NUM_GPIOS; asic->gpio.get = asic3_gpio_get; diff --git a/drivers/mfd/da903x.c b/drivers/mfd/da903x.c index 2fadbae..1b79c37 100644 --- a/drivers/mfd/da903x.c +++ b/drivers/mfd/da903x.c @@ -523,7 +523,7 @@ static int __devinit da903x_probe(struct i2c_client *client, chip->ops->read_events(chip, &tmp); ret = request_irq(client->irq, da903x_irq_handler, - IRQF_DISABLED | IRQF_TRIGGER_FALLING, + IRQF_TRIGGER_FALLING, "da903x", chip); if (ret) { dev_err(&client->dev, "failed to request irq %d\n", diff --git a/drivers/mfd/db5500-prcmu.c b/drivers/mfd/db5500-prcmu.c index 9dbb3ca..bb115b2 100644 --- a/drivers/mfd/db5500-prcmu.c +++ b/drivers/mfd/db5500-prcmu.c @@ -20,11 +20,11 @@ #include <linux/jiffies.h> #include <linux/bitops.h> #include <linux/interrupt.h> -#include <linux/mfd/db5500-prcmu.h> +#include <linux/mfd/dbx500-prcmu.h> #include <mach/hardware.h> #include <mach/irqs.h> #include <mach/db5500-regs.h> -#include "db5500-prcmu-regs.h" +#include "dbx500-prcmu-regs.h" #define _PRCM_MB_HEADER (tcdm_base + 0xFE8) #define PRCM_REQ_MB0_HEADER (_PRCM_MB_HEADER + 0x0) @@ -109,15 +109,18 @@ enum mb5_header { #define PRCMU_DSI_CLOCK_SETTING 0x00000128 /* TVCLK_MGT PLLSW=001 (PLLSOC0) PLLDIV=0x13, = 19.05 MHZ */ #define PRCMU_DSI_LP_CLOCK_SETTING 0x00000135 -#define PRCMU_PLLDSI_FREQ_SETTING 0x0004013C +#define PRCMU_PLLDSI_FREQ_SETTING 0x00020121 #define PRCMU_DSI_PLLOUT_SEL_SETTING 0x00000002 -#define PRCMU_ENABLE_ESCAPE_CLOCK_DIV 0x03000101 +#define PRCMU_ENABLE_ESCAPE_CLOCK_DIV 0x03000201 #define PRCMU_DISABLE_ESCAPE_CLOCK_DIV 0x00000101 #define PRCMU_ENABLE_PLLDSI 0x00000001 #define PRCMU_DISABLE_PLLDSI 0x00000000 #define PRCMU_DSI_RESET_SW 0x00000003 +#define PRCMU_RESOUTN0_PIN 0x00000001 +#define PRCMU_RESOUTN1_PIN 0x00000002 +#define PRCMU_RESOUTN2_PIN 0x00000004 #define PRCMU_PLLDSI_LOCKP_LOCKED 0x3 @@ -315,31 +318,31 @@ static bool read_mailbox_0(void) r = false; break; } - writel(MBOX_BIT(0), PRCM_ARM_IT1_CLEAR); + writel(MBOX_BIT(0), PRCM_ARM_IT1_CLR); return r; } static bool read_mailbox_1(void) { - writel(MBOX_BIT(1), PRCM_ARM_IT1_CLEAR); + writel(MBOX_BIT(1), PRCM_ARM_IT1_CLR); return false; } static bool read_mailbox_2(void) { - writel(MBOX_BIT(2), PRCM_ARM_IT1_CLEAR); + writel(MBOX_BIT(2), PRCM_ARM_IT1_CLR); return false; } static bool read_mailbox_3(void) { - writel(MBOX_BIT(3), PRCM_ARM_IT1_CLEAR); + writel(MBOX_BIT(3), PRCM_ARM_IT1_CLR); return false; } static bool read_mailbox_4(void) { - writel(MBOX_BIT(4), PRCM_ARM_IT1_CLEAR); + writel(MBOX_BIT(4), PRCM_ARM_IT1_CLR); return false; } @@ -360,19 +363,19 @@ static bool read_mailbox_5(void) print_unknown_header_warning(5, header); break; } - writel(MBOX_BIT(5), PRCM_ARM_IT1_CLEAR); + writel(MBOX_BIT(5), PRCM_ARM_IT1_CLR); return false; } static bool read_mailbox_6(void) { - writel(MBOX_BIT(6), PRCM_ARM_IT1_CLEAR); + writel(MBOX_BIT(6), PRCM_ARM_IT1_CLR); return false; } static bool read_mailbox_7(void) { - writel(MBOX_BIT(7), PRCM_ARM_IT1_CLEAR); + writel(MBOX_BIT(7), PRCM_ARM_IT1_CLR); return false; } @@ -434,7 +437,7 @@ int __init db5500_prcmu_init(void) return -ENODEV; /* Clean up the mailbox interrupts after pre-kernel code. */ - writel(ALL_MBOX_BITS, PRCM_ARM_IT1_CLEAR); + writel(ALL_MBOX_BITS, PRCM_ARM_IT1_CLR); r = request_threaded_irq(IRQ_DB5500_PRCMU1, prcmu_irq_handler, prcmu_irq_thread_fn, 0, "prcmu", NULL); diff --git a/drivers/mfd/db8500-prcmu-regs.h b/drivers/mfd/db8500-prcmu-regs.h deleted file mode 100644 index 3bbf04d..0000000 --- a/drivers/mfd/db8500-prcmu-regs.h +++ /dev/null @@ -1,166 +0,0 @@ -/* - * Copyright (C) STMicroelectronics 2009 - * Copyright (C) ST-Ericsson SA 2010 - * - * Author: Kumar Sanghvi <kumar.sanghvi@stericsson.com> - * Author: Sundar Iyer <sundar.iyer@stericsson.com> - * - * License Terms: GNU General Public License v2 - * - * PRCM Unit registers - */ -#ifndef __DB8500_PRCMU_REGS_H -#define __DB8500_PRCMU_REGS_H - -#include <linux/bitops.h> -#include <mach/hardware.h> - -#define BITS(_start, _end) ((BIT(_end) - BIT(_start)) + BIT(_end)) - -#define PRCM_ARM_PLLDIVPS 0x118 -#define PRCM_ARM_PLLDIVPS_ARM_BRM_RATE BITS(0, 5) -#define PRCM_ARM_PLLDIVPS_MAX_MASK 0xF - -#define PRCM_PLLARM_LOCKP 0x0A8 -#define PRCM_PLLARM_LOCKP_PRCM_PLLARM_LOCKP3 BIT(1) - -#define PRCM_ARM_CHGCLKREQ 0x114 -#define PRCM_ARM_CHGCLKREQ_PRCM_ARM_CHGCLKREQ BIT(0) - -#define PRCM_PLLARM_ENABLE 0x98 -#define PRCM_PLLARM_ENABLE_PRCM_PLLARM_ENABLE BIT(0) -#define PRCM_PLLARM_ENABLE_PRCM_PLLARM_COUNTON BIT(8) - -#define PRCM_ARMCLKFIX_MGT 0x0 -#define PRCM_A9_RESETN_CLR 0x1f4 -#define PRCM_A9_RESETN_SET 0x1f0 -#define PRCM_ARM_LS_CLAMP 0x30C -#define PRCM_SRAM_A9 0x308 - -/* ARM WFI Standby signal register */ -#define PRCM_ARM_WFI_STANDBY 0x130 -#define PRCM_IOCR 0x310 -#define PRCM_IOCR_IOFORCE BIT(0) - -/* CPU mailbox registers */ -#define PRCM_MBOX_CPU_VAL 0x0FC -#define PRCM_MBOX_CPU_SET 0x100 - -/* Dual A9 core interrupt management unit registers */ -#define PRCM_A9_MASK_REQ 0x328 -#define PRCM_A9_MASK_REQ_PRCM_A9_MASK_REQ BIT(0) - -#define PRCM_A9_MASK_ACK 0x32C -#define PRCM_ARMITMSK31TO0 0x11C -#define PRCM_ARMITMSK63TO32 0x120 -#define PRCM_ARMITMSK95TO64 0x124 -#define PRCM_ARMITMSK127TO96 0x128 -#define PRCM_POWER_STATE_VAL 0x25C -#define PRCM_ARMITVAL31TO0 0x260 -#define PRCM_ARMITVAL63TO32 0x264 -#define PRCM_ARMITVAL95TO64 0x268 -#define PRCM_ARMITVAL127TO96 0x26C - -#define PRCM_HOSTACCESS_REQ 0x334 -#define PRCM_HOSTACCESS_REQ_HOSTACCESS_REQ BIT(0) - -#define PRCM_ARM_IT1_CLR 0x48C -#define PRCM_ARM_IT1_VAL 0x494 - -#define PRCM_ITSTATUS0 0x148 -#define PRCM_ITSTATUS1 0x150 -#define PRCM_ITSTATUS2 0x158 -#define PRCM_ITSTATUS3 0x160 -#define PRCM_ITSTATUS4 0x168 -#define PRCM_ITSTATUS5 0x484 -#define PRCM_ITCLEAR5 0x488 -#define PRCM_ARMIT_MASKXP70_IT 0x1018 - -/* System reset register */ -#define PRCM_APE_SOFTRST 0x228 - -/* Level shifter and clamp control registers */ -#define PRCM_MMIP_LS_CLAMP_SET 0x420 -#define PRCM_MMIP_LS_CLAMP_CLR 0x424 - -/* PRCMU HW semaphore */ -#define PRCM_SEM 0x400 -#define PRCM_SEM_PRCM_SEM BIT(0) - -/* PRCMU clock/PLL/reset registers */ -#define PRCM_PLLDSI_FREQ 0x500 -#define PRCM_PLLDSI_ENABLE 0x504 -#define PRCM_PLLDSI_LOCKP 0x508 -#define PRCM_DSI_PLLOUT_SEL 0x530 -#define PRCM_DSITVCLK_DIV 0x52C -#define PRCM_APE_RESETN_SET 0x1E4 -#define PRCM_APE_RESETN_CLR 0x1E8 - -#define PRCM_TCR 0x1C8 -#define PRCM_TCR_TENSEL_MASK BITS(0, 7) -#define PRCM_TCR_STOP_TIMERS BIT(16) -#define PRCM_TCR_DOZE_MODE BIT(17) - -#define PRCM_CLKOCR 0x1CC -#define PRCM_CLKOCR_CLKODIV0_SHIFT 0 -#define PRCM_CLKOCR_CLKODIV0_MASK BITS(0, 5) -#define PRCM_CLKOCR_CLKOSEL0_SHIFT 6 -#define PRCM_CLKOCR_CLKOSEL0_MASK BITS(6, 8) -#define PRCM_CLKOCR_CLKODIV1_SHIFT 16 -#define PRCM_CLKOCR_CLKODIV1_MASK BITS(16, 21) -#define PRCM_CLKOCR_CLKOSEL1_SHIFT 22 -#define PRCM_CLKOCR_CLKOSEL1_MASK BITS(22, 24) -#define PRCM_CLKOCR_CLK1TYPE BIT(28) - -#define PRCM_SGACLK_MGT 0x014 -#define PRCM_UARTCLK_MGT 0x018 -#define PRCM_MSP02CLK_MGT 0x01C -#define PRCM_MSP1CLK_MGT 0x288 -#define PRCM_I2CCLK_MGT 0x020 -#define PRCM_SDMMCCLK_MGT 0x024 -#define PRCM_SLIMCLK_MGT 0x028 -#define PRCM_PER1CLK_MGT 0x02C -#define PRCM_PER2CLK_MGT 0x030 -#define PRCM_PER3CLK_MGT 0x034 -#define PRCM_PER5CLK_MGT 0x038 -#define PRCM_PER6CLK_MGT 0x03C -#define PRCM_PER7CLK_MGT 0x040 -#define PRCM_LCDCLK_MGT 0x044 -#define PRCM_BMLCLK_MGT 0x04C -#define PRCM_HSITXCLK_MGT 0x050 -#define PRCM_HSIRXCLK_MGT 0x054 -#define PRCM_HDMICLK_MGT 0x058 -#define PRCM_APEATCLK_MGT 0x05C -#define PRCM_APETRACECLK_MGT 0x060 -#define PRCM_MCDECLK_MGT 0x064 -#define PRCM_IPI2CCLK_MGT 0x068 -#define PRCM_DSIALTCLK_MGT 0x06C -#define PRCM_DMACLK_MGT 0x074 -#define PRCM_B2R2CLK_MGT 0x078 -#define PRCM_TVCLK_MGT 0x07C -#define PRCM_UNIPROCLK_MGT 0x278 -#define PRCM_SSPCLK_MGT 0x280 -#define PRCM_RNGCLK_MGT 0x284 -#define PRCM_UICCCLK_MGT 0x27C - -#define PRCM_CLK_MGT_CLKPLLDIV_MASK BITS(0, 4) -#define PRCM_CLK_MGT_CLKPLLSW_MASK BITS(5, 7) -#define PRCM_CLK_MGT_CLKEN BIT(8) - -/* ePOD and memory power signal control registers */ -#define PRCM_EPOD_C_SET 0x410 -#define PRCM_SRAM_LS_SLEEP 0x304 - -/* Debug power control unit registers */ -#define PRCM_POWER_STATE_SET 0x254 - -/* Miscellaneous unit registers */ -#define PRCM_DSI_SW_RESET 0x324 -#define PRCM_GPIOCR 0x138 - -/* GPIOCR register */ -#define PRCM_GPIOCR_SPI2_SELECT BIT(23) - -#define PRCM_DDR_SUBSYS_APE_MINBW 0x438 - -#endif /* __DB8500_PRCMU_REGS_H */ diff --git a/drivers/mfd/db8500-prcmu.c b/drivers/mfd/db8500-prcmu.c index 02a15d7..a25ab9c 100644 --- a/drivers/mfd/db8500-prcmu.c +++ b/drivers/mfd/db8500-prcmu.c @@ -27,14 +27,14 @@ #include <linux/platform_device.h> #include <linux/uaccess.h> #include <linux/mfd/core.h> -#include <linux/mfd/db8500-prcmu.h> +#include <linux/mfd/dbx500-prcmu.h> #include <linux/regulator/db8500-prcmu.h> #include <linux/regulator/machine.h> #include <mach/hardware.h> #include <mach/irqs.h> #include <mach/db8500-regs.h> #include <mach/id.h> -#include "db8500-prcmu-regs.h" +#include "dbx500-prcmu-regs.h" /* Offset for the firmware version within the TCPM */ #define PRCMU_FW_VERSION_OFFSET 0xA4 @@ -131,12 +131,14 @@ #define MB1H_REQUEST_APE_OPP_100_VOLT 0x3 #define MB1H_RELEASE_APE_OPP_100_VOLT 0x4 #define MB1H_RELEASE_USB_WAKEUP 0x5 +#define MB1H_PLL_ON_OFF 0x6 /* Mailbox 1 Requests */ #define PRCM_REQ_MB1_ARM_OPP (PRCM_REQ_MB1 + 0x0) #define PRCM_REQ_MB1_APE_OPP (PRCM_REQ_MB1 + 0x1) -#define PRCM_REQ_MB1_APE_OPP_100_RESTORE (PRCM_REQ_MB1 + 0x4) -#define PRCM_REQ_MB1_ARM_OPP_100_RESTORE (PRCM_REQ_MB1 + 0x8) +#define PRCM_REQ_MB1_PLL_ON_OFF (PRCM_REQ_MB1 + 0x4) +#define PLL_SOC1_OFF 0x4 +#define PLL_SOC1_ON 0x8 /* Mailbox 1 ACKs */ #define PRCM_ACK_MB1_CURRENT_ARM_OPP (PRCM_ACK_MB1 + 0x0) @@ -184,6 +186,11 @@ #define MB4H_HOTDOG 0x12 #define MB4H_HOTMON 0x13 #define MB4H_HOT_PERIOD 0x14 +#define MB4H_A9WDOG_CONF 0x16 +#define MB4H_A9WDOG_EN 0x17 +#define MB4H_A9WDOG_DIS 0x18 +#define MB4H_A9WDOG_LOAD 0x19 +#define MB4H_A9WDOG_KICK 0x20 /* Mailbox 4 Requests */ #define PRCM_REQ_MB4_DDR_ST_AP_SLEEP_IDLE (PRCM_REQ_MB4 + 0x0) @@ -196,6 +203,13 @@ #define PRCM_REQ_MB4_HOT_PERIOD (PRCM_REQ_MB4 + 0x0) #define HOTMON_CONFIG_LOW BIT(0) #define HOTMON_CONFIG_HIGH BIT(1) +#define PRCM_REQ_MB4_A9WDOG_0 (PRCM_REQ_MB4 + 0x0) +#define PRCM_REQ_MB4_A9WDOG_1 (PRCM_REQ_MB4 + 0x1) +#define PRCM_REQ_MB4_A9WDOG_2 (PRCM_REQ_MB4 + 0x2) +#define PRCM_REQ_MB4_A9WDOG_3 (PRCM_REQ_MB4 + 0x3) +#define A9WDOG_AUTO_OFF_EN BIT(7) +#define A9WDOG_AUTO_OFF_DIS 0 +#define A9WDOG_ID_MASK 0xf /* Mailbox 5 Requests */ #define PRCM_REQ_MB5_I2C_SLAVE_OP (PRCM_REQ_MB5 + 0x0) @@ -412,7 +426,7 @@ struct clk_mgt { static DEFINE_SPINLOCK(clk_mgt_lock); -#define CLK_MGT_ENTRY(_name)[PRCMU_##_name] = { (PRCM_##_name##_MGT), 0 } +#define CLK_MGT_ENTRY(_name)[PRCMU_##_name] = { (PRCM_##_name##_MGT_OFF), 0 } struct clk_mgt clk_mgt[PRCMU_NUM_REG_CLOCKS] = { CLK_MGT_ENTRY(SGACLK), CLK_MGT_ENTRY(UARTCLK), @@ -445,6 +459,35 @@ struct clk_mgt clk_mgt[PRCMU_NUM_REG_CLOCKS] = { CLK_MGT_ENTRY(UICCCLK), }; +static struct regulator *hwacc_regulator[NUM_HW_ACC]; +static struct regulator *hwacc_ret_regulator[NUM_HW_ACC]; + +static bool hwacc_enabled[NUM_HW_ACC]; +static bool hwacc_ret_enabled[NUM_HW_ACC]; + +static const char *hwacc_regulator_name[NUM_HW_ACC] = { + [HW_ACC_SVAMMDSP] = "hwacc-sva-mmdsp", + [HW_ACC_SVAPIPE] = "hwacc-sva-pipe", + [HW_ACC_SIAMMDSP] = "hwacc-sia-mmdsp", + [HW_ACC_SIAPIPE] = "hwacc-sia-pipe", + [HW_ACC_SGA] = "hwacc-sga", + [HW_ACC_B2R2] = "hwacc-b2r2", + [HW_ACC_MCDE] = "hwacc-mcde", + [HW_ACC_ESRAM1] = "hwacc-esram1", + [HW_ACC_ESRAM2] = "hwacc-esram2", + [HW_ACC_ESRAM3] = "hwacc-esram3", + [HW_ACC_ESRAM4] = "hwacc-esram4", +}; + +static const char *hwacc_ret_regulator_name[NUM_HW_ACC] = { + [HW_ACC_SVAMMDSP] = "hwacc-sva-mmdsp-ret", + [HW_ACC_SIAMMDSP] = "hwacc-sia-mmdsp-ret", + [HW_ACC_ESRAM1] = "hwacc-esram1-ret", + [HW_ACC_ESRAM2] = "hwacc-esram2-ret", + [HW_ACC_ESRAM3] = "hwacc-esram3-ret", + [HW_ACC_ESRAM4] = "hwacc-esram4-ret", +}; + /* * Used by MCDE to setup all necessary PRCMU registers */ @@ -493,55 +536,51 @@ static struct { } prcmu_version; -int prcmu_enable_dsipll(void) +int db8500_prcmu_enable_dsipll(void) { int i; unsigned int plldsifreq; /* Clear DSIPLL_RESETN */ - writel(PRCMU_RESET_DSIPLL, (_PRCMU_BASE + PRCM_APE_RESETN_CLR)); + writel(PRCMU_RESET_DSIPLL, PRCM_APE_RESETN_CLR); /* Unclamp DSIPLL in/out */ - writel(PRCMU_UNCLAMP_DSIPLL, (_PRCMU_BASE + PRCM_MMIP_LS_CLAMP_CLR)); + writel(PRCMU_UNCLAMP_DSIPLL, PRCM_MMIP_LS_CLAMP_CLR); if (prcmu_is_u8400()) plldsifreq = PRCMU_PLLDSI_FREQ_SETTING_U8400; else plldsifreq = PRCMU_PLLDSI_FREQ_SETTING; /* Set DSI PLL FREQ */ - writel(plldsifreq, (_PRCMU_BASE + PRCM_PLLDSI_FREQ)); - writel(PRCMU_DSI_PLLOUT_SEL_SETTING, - (_PRCMU_BASE + PRCM_DSI_PLLOUT_SEL)); + writel(plldsifreq, PRCM_PLLDSI_FREQ); + writel(PRCMU_DSI_PLLOUT_SEL_SETTING, PRCM_DSI_PLLOUT_SEL); /* Enable Escape clocks */ - writel(PRCMU_ENABLE_ESCAPE_CLOCK_DIV, - (_PRCMU_BASE + PRCM_DSITVCLK_DIV)); + writel(PRCMU_ENABLE_ESCAPE_CLOCK_DIV, PRCM_DSITVCLK_DIV); /* Start DSI PLL */ - writel(PRCMU_ENABLE_PLLDSI, (_PRCMU_BASE + PRCM_PLLDSI_ENABLE)); + writel(PRCMU_ENABLE_PLLDSI, PRCM_PLLDSI_ENABLE); /* Reset DSI PLL */ - writel(PRCMU_DSI_RESET_SW, (_PRCMU_BASE + PRCM_DSI_SW_RESET)); + writel(PRCMU_DSI_RESET_SW, PRCM_DSI_SW_RESET); for (i = 0; i < 10; i++) { - if ((readl(_PRCMU_BASE + PRCM_PLLDSI_LOCKP) & - PRCMU_PLLDSI_LOCKP_LOCKED) + if ((readl(PRCM_PLLDSI_LOCKP) & PRCMU_PLLDSI_LOCKP_LOCKED) == PRCMU_PLLDSI_LOCKP_LOCKED) break; udelay(100); } /* Set DSIPLL_RESETN */ - writel(PRCMU_RESET_DSIPLL, (_PRCMU_BASE + PRCM_APE_RESETN_SET)); + writel(PRCMU_RESET_DSIPLL, PRCM_APE_RESETN_SET); return 0; } -int prcmu_disable_dsipll(void) +int db8500_prcmu_disable_dsipll(void) { /* Disable dsi pll */ - writel(PRCMU_DISABLE_PLLDSI, (_PRCMU_BASE + PRCM_PLLDSI_ENABLE)); + writel(PRCMU_DISABLE_PLLDSI, PRCM_PLLDSI_ENABLE); /* Disable escapeclock */ - writel(PRCMU_DISABLE_ESCAPE_CLOCK_DIV, - (_PRCMU_BASE + PRCM_DSITVCLK_DIV)); + writel(PRCMU_DISABLE_ESCAPE_CLOCK_DIV, PRCM_DSITVCLK_DIV); return 0; } -int prcmu_set_display_clocks(void) +int db8500_prcmu_set_display_clocks(void) { unsigned long flags; unsigned int dsiclk; @@ -554,15 +593,15 @@ int prcmu_set_display_clocks(void) spin_lock_irqsave(&clk_mgt_lock, flags); /* Grab the HW semaphore. */ - while ((readl(_PRCMU_BASE + PRCM_SEM) & PRCM_SEM_PRCM_SEM) != 0) + while ((readl(PRCM_SEM) & PRCM_SEM_PRCM_SEM) != 0) cpu_relax(); - writel(dsiclk, (_PRCMU_BASE + PRCM_HDMICLK_MGT)); - writel(PRCMU_DSI_LP_CLOCK_SETTING, (_PRCMU_BASE + PRCM_TVCLK_MGT)); - writel(PRCMU_DPI_CLOCK_SETTING, (_PRCMU_BASE + PRCM_LCDCLK_MGT)); + writel(dsiclk, PRCM_HDMICLK_MGT); + writel(PRCMU_DSI_LP_CLOCK_SETTING, PRCM_TVCLK_MGT); + writel(PRCMU_DPI_CLOCK_SETTING, PRCM_LCDCLK_MGT); /* Release the HW semaphore. */ - writel(0, (_PRCMU_BASE + PRCM_SEM)); + writel(0, PRCM_SEM); spin_unlock_irqrestore(&clk_mgt_lock, flags); @@ -578,8 +617,8 @@ void prcmu_enable_spi2(void) unsigned long flags; spin_lock_irqsave(&gpiocr_lock, flags); - reg = readl(_PRCMU_BASE + PRCM_GPIOCR); - writel(reg | PRCM_GPIOCR_SPI2_SELECT, _PRCMU_BASE + PRCM_GPIOCR); + reg = readl(PRCM_GPIOCR); + writel(reg | PRCM_GPIOCR_SPI2_SELECT, PRCM_GPIOCR); spin_unlock_irqrestore(&gpiocr_lock, flags); } @@ -592,8 +631,8 @@ void prcmu_disable_spi2(void) unsigned long flags; spin_lock_irqsave(&gpiocr_lock, flags); - reg = readl(_PRCMU_BASE + PRCM_GPIOCR); - writel(reg & ~PRCM_GPIOCR_SPI2_SELECT, _PRCMU_BASE + PRCM_GPIOCR); + reg = readl(PRCM_GPIOCR); + writel(reg & ~PRCM_GPIOCR_SPI2_SELECT, PRCM_GPIOCR); spin_unlock_irqrestore(&gpiocr_lock, flags); } @@ -701,7 +740,7 @@ int prcmu_config_clkout(u8 clkout, u8 source, u8 div) spin_lock_irqsave(&clkout_lock, flags); - val = readl(_PRCMU_BASE + PRCM_CLKOCR); + val = readl(PRCM_CLKOCR); if (val & div_mask) { if (div) { if ((val & mask) != bits) { @@ -715,7 +754,7 @@ int prcmu_config_clkout(u8 clkout, u8 source, u8 div) } } } - writel((bits | (val & ~mask)), (_PRCMU_BASE + PRCM_CLKOCR)); + writel((bits | (val & ~mask)), PRCM_CLKOCR); requests[clkout] += (div ? 1 : -1); unlock_and_return: @@ -724,7 +763,7 @@ unlock_and_return: return r; } -int prcmu_set_power_state(u8 state, bool keep_ulp_clk, bool keep_ap_pll) +int db8500_prcmu_set_power_state(u8 state, bool keep_ulp_clk, bool keep_ap_pll) { unsigned long flags; @@ -732,7 +771,7 @@ int prcmu_set_power_state(u8 state, bool keep_ulp_clk, bool keep_ap_pll) spin_lock_irqsave(&mb0_transfer.lock, flags); - while (readl(_PRCMU_BASE + PRCM_MBOX_CPU_VAL) & MBOX_BIT(0)) + while (readl(PRCM_MBOX_CPU_VAL) & MBOX_BIT(0)) cpu_relax(); writeb(MB0H_POWER_STATE_TRANS, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB0)); @@ -741,7 +780,7 @@ int prcmu_set_power_state(u8 state, bool keep_ulp_clk, bool keep_ap_pll) writeb((keep_ulp_clk ? 1 : 0), (tcdm_base + PRCM_REQ_MB0_ULP_CLOCK_STATE)); writeb(0, (tcdm_base + PRCM_REQ_MB0_DO_NOT_WFI)); - writel(MBOX_BIT(0), (_PRCMU_BASE + PRCM_MBOX_CPU_SET)); + writel(MBOX_BIT(0), PRCM_MBOX_CPU_SET); spin_unlock_irqrestore(&mb0_transfer.lock, flags); @@ -770,18 +809,18 @@ static void config_wakeups(void) return; for (i = 0; i < 2; i++) { - while (readl(_PRCMU_BASE + PRCM_MBOX_CPU_VAL) & MBOX_BIT(0)) + while (readl(PRCM_MBOX_CPU_VAL) & MBOX_BIT(0)) cpu_relax(); writel(dbb_events, (tcdm_base + PRCM_REQ_MB0_WAKEUP_8500)); writel(abb_events, (tcdm_base + PRCM_REQ_MB0_WAKEUP_4500)); writeb(header[i], (tcdm_base + PRCM_MBOX_HEADER_REQ_MB0)); - writel(MBOX_BIT(0), (_PRCMU_BASE + PRCM_MBOX_CPU_SET)); + writel(MBOX_BIT(0), PRCM_MBOX_CPU_SET); } last_dbb_events = dbb_events; last_abb_events = abb_events; } -void prcmu_enable_wakeups(u32 wakeups) +void db8500_prcmu_enable_wakeups(u32 wakeups) { unsigned long flags; u32 bits; @@ -802,7 +841,7 @@ void prcmu_enable_wakeups(u32 wakeups) spin_unlock_irqrestore(&mb0_transfer.lock, flags); } -void prcmu_config_abb_event_readout(u32 abb_events) +void db8500_prcmu_config_abb_event_readout(u32 abb_events) { unsigned long flags; @@ -814,7 +853,7 @@ void prcmu_config_abb_event_readout(u32 abb_events) spin_unlock_irqrestore(&mb0_transfer.lock, flags); } -void prcmu_get_abb_event_buffer(void __iomem **buf) +void db8500_prcmu_get_abb_event_buffer(void __iomem **buf) { if (readb(tcdm_base + PRCM_ACK_MB0_READ_POINTER) & 1) *buf = (tcdm_base + PRCM_ACK_MB0_WAKEUP_1_4500); @@ -823,13 +862,13 @@ void prcmu_get_abb_event_buffer(void __iomem **buf) } /** - * prcmu_set_arm_opp - set the appropriate ARM OPP + * db8500_prcmu_set_arm_opp - set the appropriate ARM OPP * @opp: The new ARM operating point to which transition is to be made * Returns: 0 on success, non-zero on failure * * This function sets the the operating point of the ARM. */ -int prcmu_set_arm_opp(u8 opp) +int db8500_prcmu_set_arm_opp(u8 opp) { int r; @@ -840,14 +879,14 @@ int prcmu_set_arm_opp(u8 opp) mutex_lock(&mb1_transfer.lock); - while (readl(_PRCMU_BASE + PRCM_MBOX_CPU_VAL) & MBOX_BIT(1)) + while (readl(PRCM_MBOX_CPU_VAL) & MBOX_BIT(1)) cpu_relax(); writeb(MB1H_ARM_APE_OPP, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB1)); writeb(opp, (tcdm_base + PRCM_REQ_MB1_ARM_OPP)); writeb(APE_NO_CHANGE, (tcdm_base + PRCM_REQ_MB1_APE_OPP)); - writel(MBOX_BIT(1), (_PRCMU_BASE + PRCM_MBOX_CPU_SET)); + writel(MBOX_BIT(1), PRCM_MBOX_CPU_SET); wait_for_completion(&mb1_transfer.work); if ((mb1_transfer.ack.header != MB1H_ARM_APE_OPP) || @@ -860,11 +899,11 @@ int prcmu_set_arm_opp(u8 opp) } /** - * prcmu_get_arm_opp - get the current ARM OPP + * db8500_prcmu_get_arm_opp - get the current ARM OPP * * Returns: the current ARM OPP */ -int prcmu_get_arm_opp(void) +int db8500_prcmu_get_arm_opp(void) { return readb(tcdm_base + PRCM_ACK_MB1_CURRENT_ARM_OPP); } @@ -876,7 +915,7 @@ int prcmu_get_arm_opp(void) */ int prcmu_get_ddr_opp(void) { - return readb(_PRCMU_BASE + PRCM_DDR_SUBSYS_APE_MINBW); + return readb(PRCM_DDR_SUBSYS_APE_MINBW); } /** @@ -892,7 +931,7 @@ int prcmu_set_ddr_opp(u8 opp) return -EINVAL; /* Changing the DDR OPP can hang the hardware pre-v21 */ if (cpu_is_u8500v20_or_later() && !cpu_is_u8500v20()) - writeb(opp, (_PRCMU_BASE + PRCM_DDR_SUBSYS_APE_MINBW)); + writeb(opp, PRCM_DDR_SUBSYS_APE_MINBW); return 0; } @@ -909,14 +948,14 @@ int prcmu_set_ape_opp(u8 opp) mutex_lock(&mb1_transfer.lock); - while (readl(_PRCMU_BASE + PRCM_MBOX_CPU_VAL) & MBOX_BIT(1)) + while (readl(PRCM_MBOX_CPU_VAL) & MBOX_BIT(1)) cpu_relax(); writeb(MB1H_ARM_APE_OPP, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB1)); writeb(ARM_NO_CHANGE, (tcdm_base + PRCM_REQ_MB1_ARM_OPP)); writeb(opp, (tcdm_base + PRCM_REQ_MB1_APE_OPP)); - writel(MBOX_BIT(1), (_PRCMU_BASE + PRCM_MBOX_CPU_SET)); + writel(MBOX_BIT(1), PRCM_MBOX_CPU_SET); wait_for_completion(&mb1_transfer.work); if ((mb1_transfer.ack.header != MB1H_ARM_APE_OPP) || @@ -966,12 +1005,12 @@ int prcmu_request_ape_opp_100_voltage(bool enable) header = MB1H_RELEASE_APE_OPP_100_VOLT; } - while (readl(_PRCMU_BASE + PRCM_MBOX_CPU_VAL) & MBOX_BIT(1)) + while (readl(PRCM_MBOX_CPU_VAL) & MBOX_BIT(1)) cpu_relax(); writeb(header, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB1)); - writel(MBOX_BIT(1), (_PRCMU_BASE + PRCM_MBOX_CPU_SET)); + writel(MBOX_BIT(1), PRCM_MBOX_CPU_SET); wait_for_completion(&mb1_transfer.work); if ((mb1_transfer.ack.header != header) || @@ -995,13 +1034,13 @@ int prcmu_release_usb_wakeup_state(void) mutex_lock(&mb1_transfer.lock); - while (readl(_PRCMU_BASE + PRCM_MBOX_CPU_VAL) & MBOX_BIT(1)) + while (readl(PRCM_MBOX_CPU_VAL) & MBOX_BIT(1)) cpu_relax(); writeb(MB1H_RELEASE_USB_WAKEUP, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB1)); - writel(MBOX_BIT(1), (_PRCMU_BASE + PRCM_MBOX_CPU_SET)); + writel(MBOX_BIT(1), PRCM_MBOX_CPU_SET); wait_for_completion(&mb1_transfer.work); if ((mb1_transfer.ack.header != MB1H_RELEASE_USB_WAKEUP) || @@ -1013,15 +1052,169 @@ int prcmu_release_usb_wakeup_state(void) return r; } +static int request_pll(u8 clock, bool enable) +{ + int r = 0; + + if (clock == PRCMU_PLLSOC1) + clock = (enable ? PLL_SOC1_ON : PLL_SOC1_OFF); + else + return -EINVAL; + + mutex_lock(&mb1_transfer.lock); + + while (readl(PRCM_MBOX_CPU_VAL) & MBOX_BIT(1)) + cpu_relax(); + + writeb(MB1H_PLL_ON_OFF, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB1)); + writeb(clock, (tcdm_base + PRCM_REQ_MB1_PLL_ON_OFF)); + + writel(MBOX_BIT(1), PRCM_MBOX_CPU_SET); + wait_for_completion(&mb1_transfer.work); + + if (mb1_transfer.ack.header != MB1H_PLL_ON_OFF) + r = -EIO; + + mutex_unlock(&mb1_transfer.lock); + + return r; +} + /** - * prcmu_set_epod - set the state of a EPOD (power domain) + * prcmu_set_hwacc - set the power state of a h/w accelerator + * @hwacc_dev: The hardware accelerator (enum hw_acc_dev). + * @state: The new power state (enum hw_acc_state). + * + * This function sets the power state of a hardware accelerator. + * This function should not be called from interrupt context. + * + * NOTE! Deprecated, to be removed when all users switched over to use the + * regulator framework API. + */ +int prcmu_set_hwacc(u16 hwacc_dev, u8 state) +{ + int r = 0; + bool ram_retention = false; + bool enable, enable_ret; + + /* check argument */ + BUG_ON(hwacc_dev >= NUM_HW_ACC); + + /* get state of switches */ + enable = hwacc_enabled[hwacc_dev]; + enable_ret = hwacc_ret_enabled[hwacc_dev]; + + /* set flag if retention is possible */ + switch (hwacc_dev) { + case HW_ACC_SVAMMDSP: + case HW_ACC_SIAMMDSP: + case HW_ACC_ESRAM1: + case HW_ACC_ESRAM2: + case HW_ACC_ESRAM3: + case HW_ACC_ESRAM4: + ram_retention = true; + break; + } + + /* check argument */ + BUG_ON(state > HW_ON); + BUG_ON(state == HW_OFF_RAMRET && !ram_retention); + + /* modify enable flags */ + switch (state) { + case HW_OFF: + enable_ret = false; + enable = false; + break; + case HW_ON: + enable = true; + break; + case HW_OFF_RAMRET: + enable_ret = true; + enable = false; + break; + } + + /* get regulator (lazy) */ + if (hwacc_regulator[hwacc_dev] == NULL) { + hwacc_regulator[hwacc_dev] = regulator_get(NULL, + hwacc_regulator_name[hwacc_dev]); + if (IS_ERR(hwacc_regulator[hwacc_dev])) { + pr_err("prcmu: failed to get supply %s\n", + hwacc_regulator_name[hwacc_dev]); + r = PTR_ERR(hwacc_regulator[hwacc_dev]); + goto out; + } + } + + if (ram_retention) { + if (hwacc_ret_regulator[hwacc_dev] == NULL) { + hwacc_ret_regulator[hwacc_dev] = regulator_get(NULL, + hwacc_ret_regulator_name[hwacc_dev]); + if (IS_ERR(hwacc_ret_regulator[hwacc_dev])) { + pr_err("prcmu: failed to get supply %s\n", + hwacc_ret_regulator_name[hwacc_dev]); + r = PTR_ERR(hwacc_ret_regulator[hwacc_dev]); + goto out; + } + } + } + + /* set regulators */ + if (ram_retention) { + if (enable_ret && !hwacc_ret_enabled[hwacc_dev]) { + r = regulator_enable(hwacc_ret_regulator[hwacc_dev]); + if (r < 0) { + pr_err("prcmu_set_hwacc: ret enable failed\n"); + goto out; + } + hwacc_ret_enabled[hwacc_dev] = true; + } + } + + if (enable && !hwacc_enabled[hwacc_dev]) { + r = regulator_enable(hwacc_regulator[hwacc_dev]); + if (r < 0) { + pr_err("prcmu_set_hwacc: enable failed\n"); + goto out; + } + hwacc_enabled[hwacc_dev] = true; + } + + if (!enable && hwacc_enabled[hwacc_dev]) { + r = regulator_disable(hwacc_regulator[hwacc_dev]); + if (r < 0) { + pr_err("prcmu_set_hwacc: disable failed\n"); + goto out; + } + hwacc_enabled[hwacc_dev] = false; + } + + if (ram_retention) { + if (!enable_ret && hwacc_ret_enabled[hwacc_dev]) { + r = regulator_disable(hwacc_ret_regulator[hwacc_dev]); + if (r < 0) { + pr_err("prcmu_set_hwacc: ret disable failed\n"); + goto out; + } + hwacc_ret_enabled[hwacc_dev] = false; + } + } + +out: + return r; +} +EXPORT_SYMBOL(prcmu_set_hwacc); + +/** + * db8500_prcmu_set_epod - set the state of a EPOD (power domain) * @epod_id: The EPOD to set * @epod_state: The new EPOD state * * This function sets the state of a EPOD (power domain). It may not be called * from interrupt context. */ -int prcmu_set_epod(u16 epod_id, u8 epod_state) +int db8500_prcmu_set_epod(u16 epod_id, u8 epod_state) { int r = 0; bool ram_retention = false; @@ -1048,7 +1241,7 @@ int prcmu_set_epod(u16 epod_id, u8 epod_state) mutex_lock(&mb2_transfer.lock); /* wait for mailbox */ - while (readl(_PRCMU_BASE + PRCM_MBOX_CPU_VAL) & MBOX_BIT(2)) + while (readl(PRCM_MBOX_CPU_VAL) & MBOX_BIT(2)) cpu_relax(); /* fill in mailbox */ @@ -1058,7 +1251,7 @@ int prcmu_set_epod(u16 epod_id, u8 epod_state) writeb(MB2H_DPS, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB2)); - writel(MBOX_BIT(2), (_PRCMU_BASE + PRCM_MBOX_CPU_SET)); + writel(MBOX_BIT(2), PRCM_MBOX_CPU_SET); /* * The current firmware version does not handle errors correctly, @@ -1145,13 +1338,13 @@ static int request_sysclk(bool enable) spin_lock_irqsave(&mb3_transfer.lock, flags); - while (readl(_PRCMU_BASE + PRCM_MBOX_CPU_VAL) & MBOX_BIT(3)) + while (readl(PRCM_MBOX_CPU_VAL) & MBOX_BIT(3)) cpu_relax(); writeb((enable ? ON : OFF), (tcdm_base + PRCM_REQ_MB3_SYSCLK_MGT)); writeb(MB3H_SYSCLK, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB3)); - writel(MBOX_BIT(3), (_PRCMU_BASE + PRCM_MBOX_CPU_SET)); + writel(MBOX_BIT(3), PRCM_MBOX_CPU_SET); spin_unlock_irqrestore(&mb3_transfer.lock, flags); @@ -1177,7 +1370,7 @@ static int request_timclk(bool enable) if (!enable) val |= PRCM_TCR_STOP_TIMERS; - writel(val, (_PRCMU_BASE + PRCM_TCR)); + writel(val, PRCM_TCR); return 0; } @@ -1190,7 +1383,7 @@ static int request_reg_clock(u8 clock, bool enable) spin_lock_irqsave(&clk_mgt_lock, flags); /* Grab the HW semaphore. */ - while ((readl(_PRCMU_BASE + PRCM_SEM) & PRCM_SEM_PRCM_SEM) != 0) + while ((readl(PRCM_SEM) & PRCM_SEM_PRCM_SEM) != 0) cpu_relax(); val = readl(_PRCMU_BASE + clk_mgt[clock].offset); @@ -1203,34 +1396,61 @@ static int request_reg_clock(u8 clock, bool enable) writel(val, (_PRCMU_BASE + clk_mgt[clock].offset)); /* Release the HW semaphore. */ - writel(0, (_PRCMU_BASE + PRCM_SEM)); + writel(0, PRCM_SEM); spin_unlock_irqrestore(&clk_mgt_lock, flags); return 0; } +static int request_sga_clock(u8 clock, bool enable) +{ + u32 val; + int ret; + + if (enable) { + val = readl(PRCM_CGATING_BYPASS); + writel(val | PRCM_CGATING_BYPASS_ICN2, PRCM_CGATING_BYPASS); + } + + ret = request_reg_clock(clock, enable); + + if (!ret && !enable) { + val = readl(PRCM_CGATING_BYPASS); + writel(val & ~PRCM_CGATING_BYPASS_ICN2, PRCM_CGATING_BYPASS); + } + + return ret; +} + /** - * prcmu_request_clock() - Request for a clock to be enabled or disabled. + * db8500_prcmu_request_clock() - Request for a clock to be enabled or disabled. * @clock: The clock for which the request is made. * @enable: Whether the clock should be enabled (true) or disabled (false). * * This function should only be used by the clock implementation. * Do not use it from any other place! */ -int prcmu_request_clock(u8 clock, bool enable) +int db8500_prcmu_request_clock(u8 clock, bool enable) { - if (clock < PRCMU_NUM_REG_CLOCKS) - return request_reg_clock(clock, enable); - else if (clock == PRCMU_TIMCLK) + switch(clock) { + case PRCMU_SGACLK: + return request_sga_clock(clock, enable); + case PRCMU_TIMCLK: return request_timclk(enable); - else if (clock == PRCMU_SYSCLK) + case PRCMU_SYSCLK: return request_sysclk(enable); - else - return -EINVAL; + case PRCMU_PLLSOC1: + return request_pll(clock, enable); + default: + break; + } + if (clock < PRCMU_NUM_REG_CLOCKS) + return request_reg_clock(clock, enable); + return -EINVAL; } -int prcmu_config_esram0_deep_sleep(u8 state) +int db8500_prcmu_config_esram0_deep_sleep(u8 state) { if ((state > ESRAM0_DEEP_SLEEP_STATE_RET) || (state < ESRAM0_DEEP_SLEEP_STATE_OFF)) @@ -1238,7 +1458,7 @@ int prcmu_config_esram0_deep_sleep(u8 state) mutex_lock(&mb4_transfer.lock); - while (readl(_PRCMU_BASE + PRCM_MBOX_CPU_VAL) & MBOX_BIT(4)) + while (readl(PRCM_MBOX_CPU_VAL) & MBOX_BIT(4)) cpu_relax(); writeb(MB4H_MEM_ST, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB4)); @@ -1248,7 +1468,7 @@ int prcmu_config_esram0_deep_sleep(u8 state) (tcdm_base + PRCM_REQ_MB4_DDR_ST_AP_DEEP_IDLE)); writeb(state, (tcdm_base + PRCM_REQ_MB4_ESRAM0_ST)); - writel(MBOX_BIT(4), (_PRCMU_BASE + PRCM_MBOX_CPU_SET)); + writel(MBOX_BIT(4), PRCM_MBOX_CPU_SET); wait_for_completion(&mb4_transfer.work); mutex_unlock(&mb4_transfer.lock); @@ -1260,13 +1480,13 @@ int prcmu_config_hotdog(u8 threshold) { mutex_lock(&mb4_transfer.lock); - while (readl(_PRCMU_BASE + PRCM_MBOX_CPU_VAL) & MBOX_BIT(4)) + while (readl(PRCM_MBOX_CPU_VAL) & MBOX_BIT(4)) cpu_relax(); writeb(threshold, (tcdm_base + PRCM_REQ_MB4_HOTDOG_THRESHOLD)); writeb(MB4H_HOTDOG, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB4)); - writel(MBOX_BIT(4), (_PRCMU_BASE + PRCM_MBOX_CPU_SET)); + writel(MBOX_BIT(4), PRCM_MBOX_CPU_SET); wait_for_completion(&mb4_transfer.work); mutex_unlock(&mb4_transfer.lock); @@ -1278,7 +1498,7 @@ int prcmu_config_hotmon(u8 low, u8 high) { mutex_lock(&mb4_transfer.lock); - while (readl(_PRCMU_BASE + PRCM_MBOX_CPU_VAL) & MBOX_BIT(4)) + while (readl(PRCM_MBOX_CPU_VAL) & MBOX_BIT(4)) cpu_relax(); writeb(low, (tcdm_base + PRCM_REQ_MB4_HOTMON_LOW)); @@ -1287,7 +1507,7 @@ int prcmu_config_hotmon(u8 low, u8 high) (tcdm_base + PRCM_REQ_MB4_HOTMON_CONFIG)); writeb(MB4H_HOTMON, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB4)); - writel(MBOX_BIT(4), (_PRCMU_BASE + PRCM_MBOX_CPU_SET)); + writel(MBOX_BIT(4), PRCM_MBOX_CPU_SET); wait_for_completion(&mb4_transfer.work); mutex_unlock(&mb4_transfer.lock); @@ -1299,13 +1519,13 @@ static int config_hot_period(u16 val) { mutex_lock(&mb4_transfer.lock); - while (readl(_PRCMU_BASE + PRCM_MBOX_CPU_VAL) & MBOX_BIT(4)) + while (readl(PRCM_MBOX_CPU_VAL) & MBOX_BIT(4)) cpu_relax(); writew(val, (tcdm_base + PRCM_REQ_MB4_HOT_PERIOD)); writeb(MB4H_HOT_PERIOD, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB4)); - writel(MBOX_BIT(4), (_PRCMU_BASE + PRCM_MBOX_CPU_SET)); + writel(MBOX_BIT(4), PRCM_MBOX_CPU_SET); wait_for_completion(&mb4_transfer.work); mutex_unlock(&mb4_transfer.lock); @@ -1326,6 +1546,78 @@ int prcmu_stop_temp_sense(void) return config_hot_period(0xFFFF); } +static int prcmu_a9wdog(u8 cmd, u8 d0, u8 d1, u8 d2, u8 d3) +{ + + mutex_lock(&mb4_transfer.lock); + + while (readl(PRCM_MBOX_CPU_VAL) & MBOX_BIT(4)) + cpu_relax(); + + writeb(d0, (tcdm_base + PRCM_REQ_MB4_A9WDOG_0)); + writeb(d1, (tcdm_base + PRCM_REQ_MB4_A9WDOG_1)); + writeb(d2, (tcdm_base + PRCM_REQ_MB4_A9WDOG_2)); + writeb(d3, (tcdm_base + PRCM_REQ_MB4_A9WDOG_3)); + + writeb(cmd, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB4)); + + writel(MBOX_BIT(4), PRCM_MBOX_CPU_SET); + wait_for_completion(&mb4_transfer.work); + + mutex_unlock(&mb4_transfer.lock); + + return 0; + +} + +int prcmu_config_a9wdog(u8 num, bool sleep_auto_off) +{ + BUG_ON(num == 0 || num > 0xf); + return prcmu_a9wdog(MB4H_A9WDOG_CONF, num, 0, 0, + sleep_auto_off ? A9WDOG_AUTO_OFF_EN : + A9WDOG_AUTO_OFF_DIS); +} + +int prcmu_enable_a9wdog(u8 id) +{ + return prcmu_a9wdog(MB4H_A9WDOG_EN, id, 0, 0, 0); +} + +int prcmu_disable_a9wdog(u8 id) +{ + return prcmu_a9wdog(MB4H_A9WDOG_DIS, id, 0, 0, 0); +} + +int prcmu_kick_a9wdog(u8 id) +{ + return prcmu_a9wdog(MB4H_A9WDOG_KICK, id, 0, 0, 0); +} + +/* + * timeout is 28 bit, in ms. + */ +#define MAX_WATCHDOG_TIMEOUT 131000 +int prcmu_load_a9wdog(u8 id, u32 timeout) +{ + if (timeout > MAX_WATCHDOG_TIMEOUT) + /* + * Due to calculation bug in prcmu fw, timeouts + * can't be bigger than 131 seconds. + */ + return -EINVAL; + + return prcmu_a9wdog(MB4H_A9WDOG_LOAD, + (id & A9WDOG_ID_MASK) | + /* + * Put the lowest 28 bits of timeout at + * offset 4. Four first bits are used for id. + */ + (u8)((timeout << 4) & 0xf0), + (u8)((timeout >> 4) & 0xff), + (u8)((timeout >> 12) & 0xff), + (u8)((timeout >> 20) & 0xff)); +} + /** * prcmu_set_clock_divider() - Configure the clock divider. * @clock: The clock for which the request is made. @@ -1345,7 +1637,7 @@ int prcmu_set_clock_divider(u8 clock, u8 divider) spin_lock_irqsave(&clk_mgt_lock, flags); /* Grab the HW semaphore. */ - while ((readl(_PRCMU_BASE + PRCM_SEM) & PRCM_SEM_PRCM_SEM) != 0) + while ((readl(PRCM_SEM) & PRCM_SEM_PRCM_SEM) != 0) cpu_relax(); val = readl(_PRCMU_BASE + clk_mgt[clock].offset); @@ -1354,7 +1646,7 @@ int prcmu_set_clock_divider(u8 clock, u8 divider) writel(val, (_PRCMU_BASE + clk_mgt[clock].offset)); /* Release the HW semaphore. */ - writel(0, (_PRCMU_BASE + PRCM_SEM)); + writel(0, PRCM_SEM); spin_unlock_irqrestore(&clk_mgt_lock, flags); @@ -1380,7 +1672,7 @@ int prcmu_abb_read(u8 slave, u8 reg, u8 *value, u8 size) mutex_lock(&mb5_transfer.lock); - while (readl(_PRCMU_BASE + PRCM_MBOX_CPU_VAL) & MBOX_BIT(5)) + while (readl(PRCM_MBOX_CPU_VAL) & MBOX_BIT(5)) cpu_relax(); writeb(PRCMU_I2C_READ(slave), (tcdm_base + PRCM_REQ_MB5_I2C_SLAVE_OP)); @@ -1388,7 +1680,7 @@ int prcmu_abb_read(u8 slave, u8 reg, u8 *value, u8 size) writeb(reg, (tcdm_base + PRCM_REQ_MB5_I2C_REG)); writeb(0, (tcdm_base + PRCM_REQ_MB5_I2C_VAL)); - writel(MBOX_BIT(5), (_PRCMU_BASE + PRCM_MBOX_CPU_SET)); + writel(MBOX_BIT(5), PRCM_MBOX_CPU_SET); if (!wait_for_completion_timeout(&mb5_transfer.work, msecs_to_jiffies(20000))) { @@ -1426,7 +1718,7 @@ int prcmu_abb_write(u8 slave, u8 reg, u8 *value, u8 size) mutex_lock(&mb5_transfer.lock); - while (readl(_PRCMU_BASE + PRCM_MBOX_CPU_VAL) & MBOX_BIT(5)) + while (readl(PRCM_MBOX_CPU_VAL) & MBOX_BIT(5)) cpu_relax(); writeb(PRCMU_I2C_WRITE(slave), (tcdm_base + PRCM_REQ_MB5_I2C_SLAVE_OP)); @@ -1434,7 +1726,7 @@ int prcmu_abb_write(u8 slave, u8 reg, u8 *value, u8 size) writeb(reg, (tcdm_base + PRCM_REQ_MB5_I2C_REG)); writeb(*value, (tcdm_base + PRCM_REQ_MB5_I2C_VAL)); - writel(MBOX_BIT(5), (_PRCMU_BASE + PRCM_MBOX_CPU_SET)); + writel(MBOX_BIT(5), PRCM_MBOX_CPU_SET); if (!wait_for_completion_timeout(&mb5_transfer.work, msecs_to_jiffies(20000))) { @@ -1456,21 +1748,44 @@ int prcmu_abb_write(u8 slave, u8 reg, u8 *value, u8 size) void prcmu_ac_wake_req(void) { u32 val; + u32 status; mutex_lock(&mb0_transfer.ac_wake_lock); - val = readl(_PRCMU_BASE + PRCM_HOSTACCESS_REQ); + val = readl(PRCM_HOSTACCESS_REQ); if (val & PRCM_HOSTACCESS_REQ_HOSTACCESS_REQ) goto unlock_and_return; atomic_set(&ac_wake_req_state, 1); - writel((val | PRCM_HOSTACCESS_REQ_HOSTACCESS_REQ), - (_PRCMU_BASE + PRCM_HOSTACCESS_REQ)); +retry: + writel((val | PRCM_HOSTACCESS_REQ_HOSTACCESS_REQ), PRCM_HOSTACCESS_REQ); if (!wait_for_completion_timeout(&mb0_transfer.ac_wake_work, - msecs_to_jiffies(20000))) { - pr_err("prcmu: %s timed out (20 s) waiting for a reply.\n", + msecs_to_jiffies(5000))) { + pr_crit("prcmu: %s timed out (5 s) waiting for a reply.\n", + __func__); + goto unlock_and_return; + } + + /* + * The modem can generate an AC_WAKE_ACK, and then still go to sleep. + * As a workaround, we wait, and then check that the modem is indeed + * awake (in terms of the value of the PRCM_MOD_AWAKE_STATUS + * register, which may not be the whole truth). + */ + udelay(400); + status = (readl(PRCM_MOD_AWAKE_STATUS) & BITS(0, 2)); + if (status != (PRCM_MOD_AWAKE_STATUS_PRCM_MOD_AAPD_AWAKE | + PRCM_MOD_AWAKE_STATUS_PRCM_MOD_COREPD_AWAKE)) { + pr_err("prcmu: %s received ack, but modem not awake (0x%X).\n", + __func__, status); + udelay(1200); + writel(val, PRCM_HOSTACCESS_REQ); + if (wait_for_completion_timeout(&mb0_transfer.ac_wake_work, + msecs_to_jiffies(5000))) + goto retry; + pr_crit("prcmu: %s timed out (5 s) waiting for AC_SLEEP_ACK.\n", __func__); } @@ -1487,16 +1802,16 @@ void prcmu_ac_sleep_req() mutex_lock(&mb0_transfer.ac_wake_lock); - val = readl(_PRCMU_BASE + PRCM_HOSTACCESS_REQ); + val = readl(PRCM_HOSTACCESS_REQ); if (!(val & PRCM_HOSTACCESS_REQ_HOSTACCESS_REQ)) goto unlock_and_return; writel((val & ~PRCM_HOSTACCESS_REQ_HOSTACCESS_REQ), - (_PRCMU_BASE + PRCM_HOSTACCESS_REQ)); + PRCM_HOSTACCESS_REQ); if (!wait_for_completion_timeout(&mb0_transfer.ac_wake_work, - msecs_to_jiffies(20000))) { - pr_err("prcmu: %s timed out (20 s) waiting for a reply.\n", + msecs_to_jiffies(5000))) { + pr_crit("prcmu: %s timed out (5 s) waiting for a reply.\n", __func__); } @@ -1506,21 +1821,32 @@ unlock_and_return: mutex_unlock(&mb0_transfer.ac_wake_lock); } -bool prcmu_is_ac_wake_requested(void) +bool db8500_prcmu_is_ac_wake_requested(void) { return (atomic_read(&ac_wake_req_state) != 0); } /** - * prcmu_system_reset - System reset + * db8500_prcmu_system_reset - System reset * - * Saves the reset reason code and then sets the APE_SOFRST register which + * Saves the reset reason code and then sets the APE_SOFTRST register which * fires interrupt to fw */ -void prcmu_system_reset(u16 reset_code) +void db8500_prcmu_system_reset(u16 reset_code) { writew(reset_code, (tcdm_base + PRCM_SW_RST_REASON)); - writel(1, (_PRCMU_BASE + PRCM_APE_SOFTRST)); + writel(1, PRCM_APE_SOFTRST); +} + +/** + * db8500_prcmu_get_reset_code - Retrieve SW reset reason code + * + * Retrieves the reset reason code stored by prcmu_system_reset() before + * last restart. + */ +u16 db8500_prcmu_get_reset_code(void) +{ + return readw(tcdm_base + PRCM_SW_RST_REASON); } /** @@ -1530,11 +1856,11 @@ void prcmu_modem_reset(void) { mutex_lock(&mb1_transfer.lock); - while (readl(_PRCMU_BASE + PRCM_MBOX_CPU_VAL) & MBOX_BIT(1)) + while (readl(PRCM_MBOX_CPU_VAL) & MBOX_BIT(1)) cpu_relax(); writeb(MB1H_RESET_MODEM, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB1)); - writel(MBOX_BIT(1), (_PRCMU_BASE + PRCM_MBOX_CPU_SET)); + writel(MBOX_BIT(1), PRCM_MBOX_CPU_SET); wait_for_completion(&mb1_transfer.work); /* @@ -1551,11 +1877,11 @@ static void ack_dbb_wakeup(void) spin_lock_irqsave(&mb0_transfer.lock, flags); - while (readl(_PRCMU_BASE + PRCM_MBOX_CPU_VAL) & MBOX_BIT(0)) + while (readl(PRCM_MBOX_CPU_VAL) & MBOX_BIT(0)) cpu_relax(); writeb(MB0H_READ_WAKEUP_ACK, (tcdm_base + PRCM_MBOX_HEADER_REQ_MB0)); - writel(MBOX_BIT(0), (_PRCMU_BASE + PRCM_MBOX_CPU_SET)); + writel(MBOX_BIT(0), PRCM_MBOX_CPU_SET); spin_unlock_irqrestore(&mb0_transfer.lock, flags); } @@ -1600,7 +1926,7 @@ static bool read_mailbox_0(void) r = false; break; } - writel(MBOX_BIT(0), (_PRCMU_BASE + PRCM_ARM_IT1_CLR)); + writel(MBOX_BIT(0), PRCM_ARM_IT1_CLR); return r; } @@ -1613,7 +1939,7 @@ static bool read_mailbox_1(void) PRCM_ACK_MB1_CURRENT_APE_OPP); mb1_transfer.ack.ape_voltage_status = readb(tcdm_base + PRCM_ACK_MB1_APE_VOLTAGE_STATUS); - writel(MBOX_BIT(1), (_PRCMU_BASE + PRCM_ARM_IT1_CLR)); + writel(MBOX_BIT(1), PRCM_ARM_IT1_CLR); complete(&mb1_transfer.work); return false; } @@ -1621,14 +1947,14 @@ static bool read_mailbox_1(void) static bool read_mailbox_2(void) { mb2_transfer.ack.status = readb(tcdm_base + PRCM_ACK_MB2_DPS_STATUS); - writel(MBOX_BIT(2), (_PRCMU_BASE + PRCM_ARM_IT1_CLR)); + writel(MBOX_BIT(2), PRCM_ARM_IT1_CLR); complete(&mb2_transfer.work); return false; } static bool read_mailbox_3(void) { - writel(MBOX_BIT(3), (_PRCMU_BASE + PRCM_ARM_IT1_CLR)); + writel(MBOX_BIT(3), PRCM_ARM_IT1_CLR); return false; } @@ -1643,6 +1969,11 @@ static bool read_mailbox_4(void) case MB4H_HOTDOG: case MB4H_HOTMON: case MB4H_HOT_PERIOD: + case MB4H_A9WDOG_CONF: + case MB4H_A9WDOG_EN: + case MB4H_A9WDOG_DIS: + case MB4H_A9WDOG_LOAD: + case MB4H_A9WDOG_KICK: break; default: print_unknown_header_warning(4, header); @@ -1650,7 +1981,7 @@ static bool read_mailbox_4(void) break; } - writel(MBOX_BIT(4), (_PRCMU_BASE + PRCM_ARM_IT1_CLR)); + writel(MBOX_BIT(4), PRCM_ARM_IT1_CLR); if (do_complete) complete(&mb4_transfer.work); @@ -1662,20 +1993,20 @@ static bool read_mailbox_5(void) { mb5_transfer.ack.status = readb(tcdm_base + PRCM_ACK_MB5_I2C_STATUS); mb5_transfer.ack.value = readb(tcdm_base + PRCM_ACK_MB5_I2C_VAL); - writel(MBOX_BIT(5), (_PRCMU_BASE + PRCM_ARM_IT1_CLR)); + writel(MBOX_BIT(5), PRCM_ARM_IT1_CLR); complete(&mb5_transfer.work); return false; } static bool read_mailbox_6(void) { - writel(MBOX_BIT(6), (_PRCMU_BASE + PRCM_ARM_IT1_CLR)); + writel(MBOX_BIT(6), PRCM_ARM_IT1_CLR); return false; } static bool read_mailbox_7(void) { - writel(MBOX_BIT(7), (_PRCMU_BASE + PRCM_ARM_IT1_CLR)); + writel(MBOX_BIT(7), PRCM_ARM_IT1_CLR); return false; } @@ -1696,7 +2027,7 @@ static irqreturn_t prcmu_irq_handler(int irq, void *data) u8 n; irqreturn_t r; - bits = (readl(_PRCMU_BASE + PRCM_ARM_IT1_VAL) & ALL_MBOX_BITS); + bits = (readl(PRCM_ARM_IT1_VAL) & ALL_MBOX_BITS); if (unlikely(!bits)) return IRQ_NONE; @@ -1768,7 +2099,7 @@ static struct irq_chip prcmu_irq_chip = { .irq_unmask = prcmu_irq_unmask, }; -void __init prcmu_early_init(void) +void __init db8500_prcmu_early_init(void) { unsigned int i; @@ -1826,6 +2157,16 @@ void __init prcmu_early_init(void) } } +static void __init db8500_prcmu_init_clkforce(void) +{ + u32 val; + + val = readl(PRCM_A9PL_FORCE_CLKEN); + val &= ~(PRCM_A9PL_FORCE_CLKEN_PRCM_A9PL_FORCE_CLKEN | + PRCM_A9PL_FORCE_CLKEN_PRCM_A9AXI_FORCE_CLKEN); + writel(val, (PRCM_A9PL_FORCE_CLKEN)); +} + /* * Power domain switches (ePODs) modeled as regulators for the DB8500 SoC */ @@ -1861,7 +2202,42 @@ static struct regulator_consumer_supply db8500_vsmps2_consumers[] = { static struct regulator_consumer_supply db8500_b2r2_mcde_consumers[] = { REGULATOR_SUPPLY("vsupply", "b2r2.0"), - REGULATOR_SUPPLY("vsupply", "mcde.0"), + REGULATOR_SUPPLY("vsupply", "mcde"), +}; + +/* SVA MMDSP regulator switch */ +static struct regulator_consumer_supply db8500_svammdsp_consumers[] = { + REGULATOR_SUPPLY("sva-mmdsp", "cm_control"), +}; + +/* SVA pipe regulator switch */ +static struct regulator_consumer_supply db8500_svapipe_consumers[] = { + REGULATOR_SUPPLY("sva-pipe", "cm_control"), +}; + +/* SIA MMDSP regulator switch */ +static struct regulator_consumer_supply db8500_siammdsp_consumers[] = { + REGULATOR_SUPPLY("sia-mmdsp", "cm_control"), +}; + +/* SIA pipe regulator switch */ +static struct regulator_consumer_supply db8500_siapipe_consumers[] = { + REGULATOR_SUPPLY("sia-pipe", "cm_control"), +}; + +static struct regulator_consumer_supply db8500_sga_consumers[] = { + REGULATOR_SUPPLY("v-mali", NULL), +}; + +/* ESRAM1 and 2 regulator switch */ +static struct regulator_consumer_supply db8500_esram12_consumers[] = { + REGULATOR_SUPPLY("esram12", "cm_control"), +}; + +/* ESRAM3 and 4 regulator switch */ +static struct regulator_consumer_supply db8500_esram34_consumers[] = { + REGULATOR_SUPPLY("v-esram34", "mcde"), + REGULATOR_SUPPLY("esram34", "cm_control"), }; static struct regulator_init_data db8500_regulators[DB8500_NUM_REGULATORS] = { @@ -1923,6 +2299,8 @@ static struct regulator_init_data db8500_regulators[DB8500_NUM_REGULATORS] = { .name = "db8500-sva-mmdsp", .valid_ops_mask = REGULATOR_CHANGE_STATUS, }, + .consumer_supplies = db8500_svammdsp_consumers, + .num_consumer_supplies = ARRAY_SIZE(db8500_svammdsp_consumers), }, [DB8500_REGULATOR_SWITCH_SVAMMDSPRET] = { .constraints = { @@ -1937,6 +2315,8 @@ static struct regulator_init_data db8500_regulators[DB8500_NUM_REGULATORS] = { .name = "db8500-sva-pipe", .valid_ops_mask = REGULATOR_CHANGE_STATUS, }, + .consumer_supplies = db8500_svapipe_consumers, + .num_consumer_supplies = ARRAY_SIZE(db8500_svapipe_consumers), }, [DB8500_REGULATOR_SWITCH_SIAMMDSP] = { .supply_regulator = "db8500-vape", @@ -1944,6 +2324,8 @@ static struct regulator_init_data db8500_regulators[DB8500_NUM_REGULATORS] = { .name = "db8500-sia-mmdsp", .valid_ops_mask = REGULATOR_CHANGE_STATUS, }, + .consumer_supplies = db8500_siammdsp_consumers, + .num_consumer_supplies = ARRAY_SIZE(db8500_siammdsp_consumers), }, [DB8500_REGULATOR_SWITCH_SIAMMDSPRET] = { .constraints = { @@ -1957,6 +2339,8 @@ static struct regulator_init_data db8500_regulators[DB8500_NUM_REGULATORS] = { .name = "db8500-sia-pipe", .valid_ops_mask = REGULATOR_CHANGE_STATUS, }, + .consumer_supplies = db8500_siapipe_consumers, + .num_consumer_supplies = ARRAY_SIZE(db8500_siapipe_consumers), }, [DB8500_REGULATOR_SWITCH_SGA] = { .supply_regulator = "db8500-vape", @@ -1964,6 +2348,9 @@ static struct regulator_init_data db8500_regulators[DB8500_NUM_REGULATORS] = { .name = "db8500-sga", .valid_ops_mask = REGULATOR_CHANGE_STATUS, }, + .consumer_supplies = db8500_sga_consumers, + .num_consumer_supplies = ARRAY_SIZE(db8500_sga_consumers), + }, [DB8500_REGULATOR_SWITCH_B2R2_MCDE] = { .supply_regulator = "db8500-vape", @@ -1980,6 +2367,8 @@ static struct regulator_init_data db8500_regulators[DB8500_NUM_REGULATORS] = { .name = "db8500-esram12", .valid_ops_mask = REGULATOR_CHANGE_STATUS, }, + .consumer_supplies = db8500_esram12_consumers, + .num_consumer_supplies = ARRAY_SIZE(db8500_esram12_consumers), }, [DB8500_REGULATOR_SWITCH_ESRAM12RET] = { .constraints = { @@ -1993,6 +2382,8 @@ static struct regulator_init_data db8500_regulators[DB8500_NUM_REGULATORS] = { .name = "db8500-esram34", .valid_ops_mask = REGULATOR_CHANGE_STATUS, }, + .consumer_supplies = db8500_esram34_consumers, + .num_consumer_supplies = ARRAY_SIZE(db8500_esram34_consumers), }, [DB8500_REGULATOR_SWITCH_ESRAM34RET] = { .constraints = { @@ -2024,8 +2415,10 @@ static int __init db8500_prcmu_probe(struct platform_device *pdev) if (ux500_is_svp()) return -ENODEV; + db8500_prcmu_init_clkforce(); + /* Clean up the mailbox interrupts after pre-kernel code. */ - writel(ALL_MBOX_BITS, (_PRCMU_BASE + PRCM_ARM_IT1_CLR)); + writel(ALL_MBOX_BITS, PRCM_ARM_IT1_CLR); err = request_threaded_irq(IRQ_DB8500_PRCMU1, prcmu_irq_handler, prcmu_irq_thread_fn, IRQF_NO_SUSPEND, "prcmu", NULL); diff --git a/drivers/mfd/db5500-prcmu-regs.h b/drivers/mfd/dbx500-prcmu-regs.h index 9a8e9e4..ec22e9f 100644 --- a/drivers/mfd/db5500-prcmu-regs.h +++ b/drivers/mfd/dbx500-prcmu-regs.h @@ -10,11 +10,49 @@ * PRCM Unit registers */ -#ifndef __MACH_PRCMU_REGS_H -#define __MACH_PRCMU_REGS_H +#ifndef __DB8500_PRCMU_REGS_H +#define __DB8500_PRCMU_REGS_H #include <mach/hardware.h> +#define BITS(_start, _end) ((BIT(_end) - BIT(_start)) + BIT(_end)) + +#define PRCM_SVACLK_MGT_OFF 0x008 +#define PRCM_SIACLK_MGT_OFF 0x00C +#define PRCM_SGACLK_MGT_OFF 0x014 +#define PRCM_UARTCLK_MGT_OFF 0x018 +#define PRCM_MSP02CLK_MGT_OFF 0x01C +#define PRCM_I2CCLK_MGT_OFF 0x020 +#define PRCM_SDMMCCLK_MGT_OFF 0x024 +#define PRCM_SLIMCLK_MGT_OFF 0x028 +#define PRCM_PER1CLK_MGT_OFF 0x02C +#define PRCM_PER2CLK_MGT_OFF 0x030 +#define PRCM_PER3CLK_MGT_OFF 0x034 +#define PRCM_PER5CLK_MGT_OFF 0x038 +#define PRCM_PER6CLK_MGT_OFF 0x03C +#define PRCM_PER7CLK_MGT_OFF 0x040 +#define PRCM_PWMCLK_MGT_OFF 0x044 /* for DB5500 */ +#define PRCM_IRDACLK_MGT_OFF 0x048 /* for DB5500 */ +#define PRCM_IRRCCLK_MGT_OFF 0x04C /* for DB5500 */ +#define PRCM_LCDCLK_MGT_OFF 0x044 +#define PRCM_BMLCLK_MGT_OFF 0x04C +#define PRCM_HSITXCLK_MGT_OFF 0x050 +#define PRCM_HSIRXCLK_MGT_OFF 0x054 +#define PRCM_HDMICLK_MGT_OFF 0x058 +#define PRCM_APEATCLK_MGT_OFF 0x05C +#define PRCM_APETRACECLK_MGT_OFF 0x060 +#define PRCM_MCDECLK_MGT_OFF 0x064 +#define PRCM_IPI2CCLK_MGT_OFF 0x068 +#define PRCM_DSIALTCLK_MGT_OFF 0x06C +#define PRCM_DMACLK_MGT_OFF 0x074 +#define PRCM_B2R2CLK_MGT_OFF 0x078 +#define PRCM_TVCLK_MGT_OFF 0x07C +#define PRCM_UNIPROCLK_MGT_OFF 0x278 +#define PRCM_SSPCLK_MGT_OFF 0x280 +#define PRCM_RNGCLK_MGT_OFF 0x284 +#define PRCM_UICCCLK_MGT_OFF 0x27C +#define PRCM_MSP1CLK_MGT_OFF 0x288 + #define PRCM_ARM_PLLDIVPS (_PRCMU_BASE + 0x118) #define PRCM_ARM_PLLDIVPS_ARM_BRM_RATE 0x3f #define PRCM_ARM_PLLDIVPS_MAX_MASK 0xf @@ -30,11 +68,15 @@ #define PRCM_PLLARM_ENABLE_PRCM_PLLARM_COUNTON 0x100 #define PRCM_ARMCLKFIX_MGT (_PRCMU_BASE + 0x0) +#define PRCM_A9PL_FORCE_CLKEN (_PRCMU_BASE + 0x19C) #define PRCM_A9_RESETN_CLR (_PRCMU_BASE + 0x1f4) #define PRCM_A9_RESETN_SET (_PRCMU_BASE + 0x1f0) #define PRCM_ARM_LS_CLAMP (_PRCMU_BASE + 0x30c) #define PRCM_SRAM_A9 (_PRCMU_BASE + 0x308) +#define PRCM_A9PL_FORCE_CLKEN_PRCM_A9PL_FORCE_CLKEN BIT(0) +#define PRCM_A9PL_FORCE_CLKEN_PRCM_A9AXI_FORCE_CLKEN BIT(1) + /* ARM WFI Standby signal register */ #define PRCM_ARM_WFI_STANDBY (_PRCMU_BASE + 0x130) #define PRCM_IOCR (_PRCMU_BASE + 0x310) @@ -61,12 +103,18 @@ #define PRCM_ARMITVAL127TO96 (_PRCMU_BASE + 0x26C) #define PRCM_HOSTACCESS_REQ (_PRCMU_BASE + 0x334) +#define PRCM_HOSTACCESS_REQ_HOSTACCESS_REQ 0x1 #define ARM_WAKEUP_MODEM 0x1 -#define PRCM_ARM_IT1_CLEAR (_PRCMU_BASE + 0x48C) +#define PRCM_ARM_IT1_CLR (_PRCMU_BASE + 0x48C) #define PRCM_ARM_IT1_VAL (_PRCMU_BASE + 0x494) #define PRCM_HOLD_EVT (_PRCMU_BASE + 0x174) +#define PRCM_MOD_AWAKE_STATUS (_PRCMU_BASE + 0x4A0) +#define PRCM_MOD_AWAKE_STATUS_PRCM_MOD_COREPD_AWAKE BIT(0) +#define PRCM_MOD_AWAKE_STATUS_PRCM_MOD_AAPD_AWAKE BIT(1) +#define PRCM_MOD_AWAKE_STATUS_PRCM_MOD_VMODEM_OFF_ISO BIT(2) + #define PRCM_ITSTATUS0 (_PRCMU_BASE + 0x148) #define PRCM_ITSTATUS1 (_PRCMU_BASE + 0x150) #define PRCM_ITSTATUS2 (_PRCMU_BASE + 0x158) @@ -87,16 +135,21 @@ #define PRCM_PLLDSI_FREQ (_PRCMU_BASE + 0x500) #define PRCM_PLLDSI_ENABLE (_PRCMU_BASE + 0x504) #define PRCM_PLLDSI_LOCKP (_PRCMU_BASE + 0x508) -#define PRCM_LCDCLK_MGT (_PRCMU_BASE + 0x044) -#define PRCM_MCDECLK_MGT (_PRCMU_BASE + 0x064) -#define PRCM_HDMICLK_MGT (_PRCMU_BASE + 0x058) -#define PRCM_TVCLK_MGT (_PRCMU_BASE + 0x07c) +#define PRCM_LCDCLK_MGT (_PRCMU_BASE + PRCM_LCDCLK_MGT_OFF) +#define PRCM_MCDECLK_MGT (_PRCMU_BASE + PRCM_MCDECLK_MGT_OFF) +#define PRCM_HDMICLK_MGT (_PRCMU_BASE + PRCM_HDMICLK_MGT_OFF) +#define PRCM_TVCLK_MGT (_PRCMU_BASE + PRCM_TVCLK_MGT_OFF) #define PRCM_DSI_PLLOUT_SEL (_PRCMU_BASE + 0x530) #define PRCM_DSITVCLK_DIV (_PRCMU_BASE + 0x52C) #define PRCM_PLLDSI_LOCKP (_PRCMU_BASE + 0x508) #define PRCM_APE_RESETN_SET (_PRCMU_BASE + 0x1E4) #define PRCM_APE_RESETN_CLR (_PRCMU_BASE + 0x1E8) + #define PRCM_CLKOCR (_PRCMU_BASE + 0x1CC) +#define PRCM_CLKOCR_CLKOUT0_REF_CLK (1 << 0) +#define PRCM_CLKOCR_CLKOUT0_MASK BITS(0, 13) +#define PRCM_CLKOCR_CLKOUT1_REF_CLK (1 << 16) +#define PRCM_CLKOCR_CLKOUT1_MASK BITS(16, 29) /* ePOD and memory power signal control registers */ #define PRCM_EPOD_C_SET (_PRCMU_BASE + 0x410) @@ -111,5 +164,41 @@ #define PRCM_GPIOCR_DBG_STM_MOD_CMD1 0x800 #define PRCM_GPIOCR_DBG_UARTMOD_CMD0 0x1 +/* PRCMU HW semaphore */ +#define PRCM_SEM (_PRCMU_BASE + 0x400) +#define PRCM_SEM_PRCM_SEM BIT(0) + +#define PRCM_TCR (_PRCMU_BASE + 0x1C8) +#define PRCM_TCR_TENSEL_MASK BITS(0, 7) +#define PRCM_TCR_STOP_TIMERS BIT(16) +#define PRCM_TCR_DOZE_MODE BIT(17) + +#define PRCM_CLKOCR_CLKODIV0_SHIFT 0 +#define PRCM_CLKOCR_CLKODIV0_MASK BITS(0, 5) +#define PRCM_CLKOCR_CLKOSEL0_SHIFT 6 +#define PRCM_CLKOCR_CLKOSEL0_MASK BITS(6, 8) +#define PRCM_CLKOCR_CLKODIV1_SHIFT 16 +#define PRCM_CLKOCR_CLKODIV1_MASK BITS(16, 21) +#define PRCM_CLKOCR_CLKOSEL1_SHIFT 22 +#define PRCM_CLKOCR_CLKOSEL1_MASK BITS(22, 24) +#define PRCM_CLKOCR_CLK1TYPE BIT(28) + +#define PRCM_CLK_MGT_CLKPLLDIV_MASK BITS(0, 4) +#define PRCM_CLK_MGT_CLKPLLSW_MASK BITS(5, 7) +#define PRCM_CLK_MGT_CLKEN BIT(8) + +/* GPIOCR register */ +#define PRCM_GPIOCR_SPI2_SELECT BIT(23) + +#define PRCM_DDR_SUBSYS_APE_MINBW (_PRCMU_BASE + 0x438) +#define PRCM_CGATING_BYPASS (_PRCMU_BASE + 0x134) +#define PRCM_CGATING_BYPASS_ICN2 BIT(6) + +/* Miscellaneous unit registers */ +#define PRCM_RESOUTN_SET (_PRCMU_BASE + 0x214) +#define PRCM_RESOUTN_CLR (_PRCMU_BASE + 0x218) + +/* System reset register */ +#define PRCM_APE_SOFTRST (_PRCMU_BASE + 0x228) -#endif /* __MACH_PRCMU__REGS_H */ +#endif /* __DB8500_PRCMU_REGS_H */ diff --git a/drivers/mfd/intel_msic.c b/drivers/mfd/intel_msic.c new file mode 100644 index 0000000..97c2776 --- /dev/null +++ b/drivers/mfd/intel_msic.c @@ -0,0 +1,502 @@ +/* + * Driver for Intel MSIC + * + * Copyright (C) 2011, Intel Corporation + * Author: Mika Westerberg <mika.westerberg@linux.intel.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/gpio.h> +#include <linux/io.h> +#include <linux/module.h> +#include <linux/mfd/core.h> +#include <linux/mfd/intel_msic.h> +#include <linux/platform_device.h> +#include <linux/slab.h> + +#include <asm/intel_scu_ipc.h> + +#define MSIC_VENDOR(id) ((id >> 6) & 3) +#define MSIC_VERSION(id) (id & 0x3f) +#define MSIC_MAJOR(id) ('A' + ((id >> 3) & 7)) +#define MSIC_MINOR(id) (id & 7) + +/* + * MSIC interrupt tree is readable from SRAM at INTEL_MSIC_IRQ_PHYS_BASE. + * Since IRQ block starts from address 0x002 we need to substract that from + * the actual IRQ status register address. + */ +#define MSIC_IRQ_STATUS(x) (INTEL_MSIC_IRQ_PHYS_BASE + ((x) - 2)) +#define MSIC_IRQ_STATUS_ACCDET MSIC_IRQ_STATUS(INTEL_MSIC_ACCDET) + +/* + * The SCU hardware has limitation of 16 bytes per read/write buffer on + * Medfield. + */ +#define SCU_IPC_RWBUF_LIMIT 16 + +/** + * struct intel_msic - an MSIC MFD instance + * @pdev: pointer to the platform device + * @vendor: vendor ID + * @version: chip version + * @irq_base: base address of the mapped MSIC SRAM interrupt tree + */ +struct intel_msic { + struct platform_device *pdev; + unsigned vendor; + unsigned version; + void __iomem *irq_base; +}; + +static struct resource msic_touch_resources[] = { + { + .flags = IORESOURCE_IRQ, + }, +}; + +static struct resource msic_adc_resources[] = { + { + .flags = IORESOURCE_IRQ, + }, +}; + +static struct resource msic_battery_resources[] = { + { + .flags = IORESOURCE_IRQ, + }, +}; + +static struct resource msic_gpio_resources[] = { + { + .flags = IORESOURCE_IRQ, + }, +}; + +static struct resource msic_audio_resources[] = { + { + .name = "IRQ", + .flags = IORESOURCE_IRQ, + }, + /* + * We will pass IRQ_BASE to the driver now but this can be removed + * when/if the driver starts to use intel_msic_irq_read(). + */ + { + .name = "IRQ_BASE", + .flags = IORESOURCE_MEM, + .start = MSIC_IRQ_STATUS_ACCDET, + .end = MSIC_IRQ_STATUS_ACCDET, + }, +}; + +static struct resource msic_hdmi_resources[] = { + { + .flags = IORESOURCE_IRQ, + }, +}; + +static struct resource msic_thermal_resources[] = { + { + .flags = IORESOURCE_IRQ, + }, +}; + +static struct resource msic_power_btn_resources[] = { + { + .flags = IORESOURCE_IRQ, + }, +}; + +static struct resource msic_ocd_resources[] = { + { + .flags = IORESOURCE_IRQ, + }, +}; + +/* + * Devices that are part of the MSIC and are available via firmware + * populated SFI DEVS table. + */ +static struct mfd_cell msic_devs[] = { + [INTEL_MSIC_BLOCK_TOUCH] = { + .name = "msic_touch", + .num_resources = ARRAY_SIZE(msic_touch_resources), + .resources = msic_touch_resources, + }, + [INTEL_MSIC_BLOCK_ADC] = { + .name = "msic_adc", + .num_resources = ARRAY_SIZE(msic_adc_resources), + .resources = msic_adc_resources, + }, + [INTEL_MSIC_BLOCK_BATTERY] = { + .name = "msic_battery", + .num_resources = ARRAY_SIZE(msic_battery_resources), + .resources = msic_battery_resources, + }, + [INTEL_MSIC_BLOCK_GPIO] = { + .name = "msic_gpio", + .num_resources = ARRAY_SIZE(msic_gpio_resources), + .resources = msic_gpio_resources, + }, + [INTEL_MSIC_BLOCK_AUDIO] = { + .name = "msic_audio", + .num_resources = ARRAY_SIZE(msic_audio_resources), + .resources = msic_audio_resources, + }, + [INTEL_MSIC_BLOCK_HDMI] = { + .name = "msic_hdmi", + .num_resources = ARRAY_SIZE(msic_hdmi_resources), + .resources = msic_hdmi_resources, + }, + [INTEL_MSIC_BLOCK_THERMAL] = { + .name = "msic_thermal", + .num_resources = ARRAY_SIZE(msic_thermal_resources), + .resources = msic_thermal_resources, + }, + [INTEL_MSIC_BLOCK_POWER_BTN] = { + .name = "msic_power_btn", + .num_resources = ARRAY_SIZE(msic_power_btn_resources), + .resources = msic_power_btn_resources, + }, + [INTEL_MSIC_BLOCK_OCD] = { + .name = "msic_ocd", + .num_resources = ARRAY_SIZE(msic_ocd_resources), + .resources = msic_ocd_resources, + }, +}; + +/* + * Other MSIC related devices which are not directly available via SFI DEVS + * table. These can be pseudo devices, regulators etc. which are needed for + * different purposes. + * + * These devices appear only after the MSIC driver itself is initialized so + * we can guarantee that the SCU IPC interface is ready. + */ +static struct mfd_cell msic_other_devs[] = { + /* Audio codec in the MSIC */ + { + .id = -1, + .name = "sn95031", + }, +}; + +/** + * intel_msic_reg_read - read a single MSIC register + * @reg: register to read + * @val: register value is placed here + * + * Read a single register from MSIC. Returns %0 on success and negative + * errno in case of failure. + * + * Function may sleep. + */ +int intel_msic_reg_read(unsigned short reg, u8 *val) +{ + return intel_scu_ipc_ioread8(reg, val); +} +EXPORT_SYMBOL_GPL(intel_msic_reg_read); + +/** + * intel_msic_reg_write - write a single MSIC register + * @reg: register to write + * @val: value to write to that register + * + * Write a single MSIC register. Returns 0 on success and negative + * errno in case of failure. + * + * Function may sleep. + */ +int intel_msic_reg_write(unsigned short reg, u8 val) +{ + return intel_scu_ipc_iowrite8(reg, val); +} +EXPORT_SYMBOL_GPL(intel_msic_reg_write); + +/** + * intel_msic_reg_update - update a single MSIC register + * @reg: register to update + * @val: value to write to the register + * @mask: specifies which of the bits are updated (%0 = don't update, + * %1 = update) + * + * Perform an update to a register @reg. @mask is used to specify which + * bits are updated. Returns %0 in case of success and negative errno in + * case of failure. + * + * Function may sleep. + */ +int intel_msic_reg_update(unsigned short reg, u8 val, u8 mask) +{ + return intel_scu_ipc_update_register(reg, val, mask); +} +EXPORT_SYMBOL_GPL(intel_msic_reg_update); + +/** + * intel_msic_bulk_read - read an array of registers + * @reg: array of register addresses to read + * @buf: array where the read values are placed + * @count: number of registers to read + * + * Function reads @count registers from the MSIC using addresses passed in + * @reg. Read values are placed in @buf. Reads are performed atomically + * wrt. MSIC. + * + * Returns %0 in case of success and negative errno in case of failure. + * + * Function may sleep. + */ +int intel_msic_bulk_read(unsigned short *reg, u8 *buf, size_t count) +{ + if (WARN_ON(count > SCU_IPC_RWBUF_LIMIT)) + return -EINVAL; + + return intel_scu_ipc_readv(reg, buf, count); +} +EXPORT_SYMBOL_GPL(intel_msic_bulk_read); + +/** + * intel_msic_bulk_write - write an array of values to the MSIC registers + * @reg: array of registers to write + * @buf: values to write to each register + * @count: number of registers to write + * + * Function writes @count registers in @buf to MSIC. Writes are performed + * atomically wrt MSIC. Returns %0 in case of success and negative errno in + * case of failure. + * + * Function may sleep. + */ +int intel_msic_bulk_write(unsigned short *reg, u8 *buf, size_t count) +{ + if (WARN_ON(count > SCU_IPC_RWBUF_LIMIT)) + return -EINVAL; + + return intel_scu_ipc_writev(reg, buf, count); +} +EXPORT_SYMBOL_GPL(intel_msic_bulk_write); + +/** + * intel_msic_irq_read - read a register from an MSIC interrupt tree + * @msic: MSIC instance + * @reg: interrupt register (between %INTEL_MSIC_IRQLVL1 and + * %INTEL_MSIC_RESETIRQ2) + * @val: value of the register is placed here + * + * This function can be used by an MSIC subdevice interrupt handler to read + * a register value from the MSIC interrupt tree. In this way subdevice + * drivers don't have to map in the interrupt tree themselves but can just + * call this function instead. + * + * Function doesn't sleep and is callable from interrupt context. + * + * Returns %-EINVAL if @reg is outside of the allowed register region. + */ +int intel_msic_irq_read(struct intel_msic *msic, unsigned short reg, u8 *val) +{ + if (WARN_ON(reg < INTEL_MSIC_IRQLVL1 || reg > INTEL_MSIC_RESETIRQ2)) + return -EINVAL; + + *val = readb(msic->irq_base + (reg - INTEL_MSIC_IRQLVL1)); + return 0; +} +EXPORT_SYMBOL_GPL(intel_msic_irq_read); + +static int __devinit intel_msic_init_devices(struct intel_msic *msic) +{ + struct platform_device *pdev = msic->pdev; + struct intel_msic_platform_data *pdata = pdev->dev.platform_data; + int ret, i; + + if (pdata->gpio) { + struct mfd_cell *cell = &msic_devs[INTEL_MSIC_BLOCK_GPIO]; + + cell->platform_data = pdata->gpio; + cell->pdata_size = sizeof(*pdata->gpio); + } + + if (pdata->ocd) { + unsigned gpio = pdata->ocd->gpio; + + ret = gpio_request_one(gpio, GPIOF_IN, "ocd_gpio"); + if (ret) { + dev_err(&pdev->dev, "failed to register OCD GPIO\n"); + return ret; + } + + ret = gpio_to_irq(gpio); + if (ret < 0) { + dev_err(&pdev->dev, "no IRQ number for OCD GPIO\n"); + gpio_free(gpio); + return ret; + } + + /* Update the IRQ number for the OCD */ + pdata->irq[INTEL_MSIC_BLOCK_OCD] = ret; + } + + for (i = 0; i < ARRAY_SIZE(msic_devs); i++) { + if (!pdata->irq[i]) + continue; + + ret = mfd_add_devices(&pdev->dev, -1, &msic_devs[i], 1, NULL, + pdata->irq[i]); + if (ret) + goto fail; + } + + ret = mfd_add_devices(&pdev->dev, 0, msic_other_devs, + ARRAY_SIZE(msic_other_devs), NULL, 0); + if (ret) + goto fail; + + return 0; + +fail: + mfd_remove_devices(&pdev->dev); + if (pdata->ocd) + gpio_free(pdata->ocd->gpio); + + return ret; +} + +static void __devexit intel_msic_remove_devices(struct intel_msic *msic) +{ + struct platform_device *pdev = msic->pdev; + struct intel_msic_platform_data *pdata = pdev->dev.platform_data; + + mfd_remove_devices(&pdev->dev); + + if (pdata->ocd) + gpio_free(pdata->ocd->gpio); +} + +static int __devinit intel_msic_probe(struct platform_device *pdev) +{ + struct intel_msic_platform_data *pdata = pdev->dev.platform_data; + struct intel_msic *msic; + struct resource *res; + u8 id0, id1; + int ret; + + if (!pdata) { + dev_err(&pdev->dev, "no platform data passed\n"); + return -EINVAL; + } + + /* First validate that we have an MSIC in place */ + ret = intel_scu_ipc_ioread8(INTEL_MSIC_ID0, &id0); + if (ret) { + dev_err(&pdev->dev, "failed to identify the MSIC chip (ID0)\n"); + return -ENXIO; + } + + ret = intel_scu_ipc_ioread8(INTEL_MSIC_ID1, &id1); + if (ret) { + dev_err(&pdev->dev, "failed to identify the MSIC chip (ID1)\n"); + return -ENXIO; + } + + if (MSIC_VENDOR(id0) != MSIC_VENDOR(id1)) { + dev_err(&pdev->dev, "invalid vendor ID: %x, %x\n", id0, id1); + return -ENXIO; + } + + msic = kzalloc(sizeof(*msic), GFP_KERNEL); + if (!msic) + return -ENOMEM; + + msic->vendor = MSIC_VENDOR(id0); + msic->version = MSIC_VERSION(id0); + msic->pdev = pdev; + + /* + * Map in the MSIC interrupt tree area in SRAM. This is exposed to + * the clients via intel_msic_irq_read(). + */ + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_err(&pdev->dev, "failed to get SRAM iomem resource\n"); + ret = -ENODEV; + goto fail_free_msic; + } + + res = request_mem_region(res->start, resource_size(res), pdev->name); + if (!res) { + ret = -EBUSY; + goto fail_free_msic; + } + + msic->irq_base = ioremap_nocache(res->start, resource_size(res)); + if (!msic->irq_base) { + dev_err(&pdev->dev, "failed to map SRAM memory\n"); + ret = -ENOMEM; + goto fail_release_region; + } + + platform_set_drvdata(pdev, msic); + + ret = intel_msic_init_devices(msic); + if (ret) { + dev_err(&pdev->dev, "failed to initialize MSIC devices\n"); + goto fail_unmap_mem; + } + + dev_info(&pdev->dev, "Intel MSIC version %c%d (vendor %#x)\n", + MSIC_MAJOR(msic->version), MSIC_MINOR(msic->version), + msic->vendor); + + return 0; + +fail_unmap_mem: + iounmap(msic->irq_base); +fail_release_region: + release_mem_region(res->start, resource_size(res)); +fail_free_msic: + kfree(msic); + + return ret; +} + +static int __devexit intel_msic_remove(struct platform_device *pdev) +{ + struct intel_msic *msic = platform_get_drvdata(pdev); + struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + + intel_msic_remove_devices(msic); + platform_set_drvdata(pdev, NULL); + iounmap(msic->irq_base); + release_mem_region(res->start, resource_size(res)); + kfree(msic); + + return 0; +} + +static struct platform_driver intel_msic_driver = { + .probe = intel_msic_probe, + .remove = __devexit_p(intel_msic_remove), + .driver = { + .name = "intel_msic", + .owner = THIS_MODULE, + }, +}; + +static int __init intel_msic_init(void) +{ + return platform_driver_register(&intel_msic_driver); +} +module_init(intel_msic_init); + +static void __exit intel_msic_exit(void) +{ + platform_driver_unregister(&intel_msic_driver); +} +module_exit(intel_msic_exit); + +MODULE_DESCRIPTION("Driver for Intel MSIC"); +MODULE_AUTHOR("Mika Westerberg <mika.westerberg@linux.intel.com>"); +MODULE_LICENSE("GPL"); diff --git a/drivers/mfd/jz4740-adc.c b/drivers/mfd/jz4740-adc.c index 563654c..1e9ee53 100644 --- a/drivers/mfd/jz4740-adc.c +++ b/drivers/mfd/jz4740-adc.c @@ -328,7 +328,7 @@ static int __devexit jz4740_adc_remove(struct platform_device *pdev) return 0; } -struct platform_driver jz4740_adc_driver = { +static struct platform_driver jz4740_adc_driver = { .probe = jz4740_adc_probe, .remove = __devexit_p(jz4740_adc_remove), .driver = { diff --git a/drivers/mfd/max8997.c b/drivers/mfd/max8997.c index f83103b..dc58750 100644 --- a/drivers/mfd/max8997.c +++ b/drivers/mfd/max8997.c @@ -23,6 +23,7 @@ #include <linux/slab.h> #include <linux/i2c.h> +#include <linux/interrupt.h> #include <linux/pm_runtime.h> #include <linux/mutex.h> #include <linux/mfd/core.h> @@ -142,7 +143,6 @@ static int max8997_i2c_probe(struct i2c_client *i2c, max8997->irq_base = pdata->irq_base; max8997->ono = pdata->ono; - max8997->wakeup = pdata->wakeup; mutex_init(&max8997->iolock); @@ -169,6 +169,9 @@ static int max8997_i2c_probe(struct i2c_client *i2c, if (ret < 0) goto err_mfd; + /* MAX8997 has a power button input. */ + device_init_wakeup(max8997->dev, pdata->wakeup); + return ret; err_mfd: @@ -398,7 +401,29 @@ static int max8997_restore(struct device *dev) return 0; } +static int max8997_suspend(struct device *dev) +{ + struct i2c_client *i2c = container_of(dev, struct i2c_client, dev); + struct max8997_dev *max8997 = i2c_get_clientdata(i2c); + + if (device_may_wakeup(dev)) + irq_set_irq_wake(max8997->irq, 1); + return 0; +} + +static int max8997_resume(struct device *dev) +{ + struct i2c_client *i2c = container_of(dev, struct i2c_client, dev); + struct max8997_dev *max8997 = i2c_get_clientdata(i2c); + + if (device_may_wakeup(dev)) + irq_set_irq_wake(max8997->irq, 0); + return max8997_irq_resume(max8997); +} + const struct dev_pm_ops max8997_pm = { + .suspend = max8997_suspend, + .resume = max8997_resume, .freeze = max8997_freeze, .restore = max8997_restore, }; diff --git a/drivers/mfd/mc13xxx-core.c b/drivers/mfd/mc13xxx-core.c index 7e4d44b..e9619ac 100644 --- a/drivers/mfd/mc13xxx-core.c +++ b/drivers/mfd/mc13xxx-core.c @@ -26,20 +26,10 @@ struct mc13xxx { irq_handler_t irqhandler[MC13XXX_NUM_IRQ]; void *irqdata[MC13XXX_NUM_IRQ]; -}; - -struct mc13783 { - struct mc13xxx mc13xxx; int adcflags; }; -struct mc13xxx *mc13783_to_mc13xxx(struct mc13783 *mc13783) -{ - return &mc13783->mc13xxx; -} -EXPORT_SYMBOL(mc13783_to_mc13xxx); - #define MC13XXX_IRQSTAT0 0 #define MC13XXX_IRQSTAT0_ADCDONEI (1 << 0) #define MC13XXX_IRQSTAT0_ADCBISDONEI (1 << 1) @@ -136,14 +126,14 @@ EXPORT_SYMBOL(mc13783_to_mc13xxx); #define MC13XXX_REVISION_FAB (0x03 << 11) #define MC13XXX_REVISION_ICIDCODE (0x3f << 13) -#define MC13783_ADC1 44 -#define MC13783_ADC1_ADEN (1 << 0) -#define MC13783_ADC1_RAND (1 << 1) -#define MC13783_ADC1_ADSEL (1 << 3) -#define MC13783_ADC1_ASC (1 << 20) -#define MC13783_ADC1_ADTRIGIGN (1 << 21) +#define MC13XXX_ADC1 44 +#define MC13XXX_ADC1_ADEN (1 << 0) +#define MC13XXX_ADC1_RAND (1 << 1) +#define MC13XXX_ADC1_ADSEL (1 << 3) +#define MC13XXX_ADC1_ASC (1 << 20) +#define MC13XXX_ADC1_ADTRIGIGN (1 << 21) -#define MC13783_ADC2 45 +#define MC13XXX_ADC2 45 #define MC13XXX_NUMREGS 0x3f @@ -487,7 +477,7 @@ enum mc13xxx_id { MC13XXX_ID_INVALID, }; -const char *mc13xxx_chipname[] = { +static const char *mc13xxx_chipname[] = { [MC13XXX_ID_MC13783] = "mc13783", [MC13XXX_ID_MC13892] = "mc13892", }; @@ -558,8 +548,6 @@ static const char *mc13xxx_get_chipname(struct mc13xxx *mc13xxx) return mc13xxx_chipname[devid->driver_data]; } -#include <linux/mfd/mc13783.h> - int mc13xxx_get_flags(struct mc13xxx *mc13xxx) { struct mc13xxx_platform_data *pdata = @@ -569,15 +557,15 @@ int mc13xxx_get_flags(struct mc13xxx *mc13xxx) } EXPORT_SYMBOL(mc13xxx_get_flags); -#define MC13783_ADC1_CHAN0_SHIFT 5 -#define MC13783_ADC1_CHAN1_SHIFT 8 +#define MC13XXX_ADC1_CHAN0_SHIFT 5 +#define MC13XXX_ADC1_CHAN1_SHIFT 8 struct mc13xxx_adcdone_data { struct mc13xxx *mc13xxx; struct completion done; }; -static irqreturn_t mc13783_handler_adcdone(int irq, void *data) +static irqreturn_t mc13xxx_handler_adcdone(int irq, void *data) { struct mc13xxx_adcdone_data *adcdone_data = data; @@ -588,12 +576,11 @@ static irqreturn_t mc13783_handler_adcdone(int irq, void *data) return IRQ_HANDLED; } -#define MC13783_ADC_WORKING (1 << 0) +#define MC13XXX_ADC_WORKING (1 << 0) -int mc13783_adc_do_conversion(struct mc13783 *mc13783, unsigned int mode, +int mc13xxx_adc_do_conversion(struct mc13xxx *mc13xxx, unsigned int mode, unsigned int channel, unsigned int *sample) { - struct mc13xxx *mc13xxx = &mc13783->mc13xxx; u32 adc0, adc1, old_adc0; int i, ret; struct mc13xxx_adcdone_data adcdone_data = { @@ -605,51 +592,51 @@ int mc13783_adc_do_conversion(struct mc13783 *mc13783, unsigned int mode, mc13xxx_lock(mc13xxx); - if (mc13783->adcflags & MC13783_ADC_WORKING) { + if (mc13xxx->adcflags & MC13XXX_ADC_WORKING) { ret = -EBUSY; goto out; } - mc13783->adcflags |= MC13783_ADC_WORKING; + mc13xxx->adcflags |= MC13XXX_ADC_WORKING; - mc13xxx_reg_read(mc13xxx, MC13783_ADC0, &old_adc0); + mc13xxx_reg_read(mc13xxx, MC13XXX_ADC0, &old_adc0); - adc0 = MC13783_ADC0_ADINC1 | MC13783_ADC0_ADINC2; - adc1 = MC13783_ADC1_ADEN | MC13783_ADC1_ADTRIGIGN | MC13783_ADC1_ASC; + adc0 = MC13XXX_ADC0_ADINC1 | MC13XXX_ADC0_ADINC2; + adc1 = MC13XXX_ADC1_ADEN | MC13XXX_ADC1_ADTRIGIGN | MC13XXX_ADC1_ASC; if (channel > 7) - adc1 |= MC13783_ADC1_ADSEL; + adc1 |= MC13XXX_ADC1_ADSEL; switch (mode) { - case MC13783_ADC_MODE_TS: - adc0 |= MC13783_ADC0_ADREFEN | MC13783_ADC0_TSMOD0 | - MC13783_ADC0_TSMOD1; - adc1 |= 4 << MC13783_ADC1_CHAN1_SHIFT; + case MC13XXX_ADC_MODE_TS: + adc0 |= MC13XXX_ADC0_ADREFEN | MC13XXX_ADC0_TSMOD0 | + MC13XXX_ADC0_TSMOD1; + adc1 |= 4 << MC13XXX_ADC1_CHAN1_SHIFT; break; - case MC13783_ADC_MODE_SINGLE_CHAN: - adc0 |= old_adc0 & MC13783_ADC0_TSMOD_MASK; - adc1 |= (channel & 0x7) << MC13783_ADC1_CHAN0_SHIFT; - adc1 |= MC13783_ADC1_RAND; + case MC13XXX_ADC_MODE_SINGLE_CHAN: + adc0 |= old_adc0 & MC13XXX_ADC0_TSMOD_MASK; + adc1 |= (channel & 0x7) << MC13XXX_ADC1_CHAN0_SHIFT; + adc1 |= MC13XXX_ADC1_RAND; break; - case MC13783_ADC_MODE_MULT_CHAN: - adc0 |= old_adc0 & MC13783_ADC0_TSMOD_MASK; - adc1 |= 4 << MC13783_ADC1_CHAN1_SHIFT; + case MC13XXX_ADC_MODE_MULT_CHAN: + adc0 |= old_adc0 & MC13XXX_ADC0_TSMOD_MASK; + adc1 |= 4 << MC13XXX_ADC1_CHAN1_SHIFT; break; default: - mc13783_unlock(mc13783); + mc13xxx_unlock(mc13xxx); return -EINVAL; } - dev_dbg(&mc13783->mc13xxx.spidev->dev, "%s: request irq\n", __func__); - mc13xxx_irq_request(mc13xxx, MC13783_IRQ_ADCDONE, - mc13783_handler_adcdone, __func__, &adcdone_data); - mc13xxx_irq_ack(mc13xxx, MC13783_IRQ_ADCDONE); + dev_dbg(&mc13xxx->spidev->dev, "%s: request irq\n", __func__); + mc13xxx_irq_request(mc13xxx, MC13XXX_IRQ_ADCDONE, + mc13xxx_handler_adcdone, __func__, &adcdone_data); + mc13xxx_irq_ack(mc13xxx, MC13XXX_IRQ_ADCDONE); - mc13xxx_reg_write(mc13xxx, MC13783_ADC0, adc0); - mc13xxx_reg_write(mc13xxx, MC13783_ADC1, adc1); + mc13xxx_reg_write(mc13xxx, MC13XXX_ADC0, adc0); + mc13xxx_reg_write(mc13xxx, MC13XXX_ADC1, adc1); mc13xxx_unlock(mc13xxx); @@ -660,27 +647,27 @@ int mc13783_adc_do_conversion(struct mc13783 *mc13783, unsigned int mode, mc13xxx_lock(mc13xxx); - mc13xxx_irq_free(mc13xxx, MC13783_IRQ_ADCDONE, &adcdone_data); + mc13xxx_irq_free(mc13xxx, MC13XXX_IRQ_ADCDONE, &adcdone_data); if (ret > 0) for (i = 0; i < 4; ++i) { ret = mc13xxx_reg_read(mc13xxx, - MC13783_ADC2, &sample[i]); + MC13XXX_ADC2, &sample[i]); if (ret) break; } - if (mode == MC13783_ADC_MODE_TS) + if (mode == MC13XXX_ADC_MODE_TS) /* restore TSMOD */ - mc13xxx_reg_write(mc13xxx, MC13783_ADC0, old_adc0); + mc13xxx_reg_write(mc13xxx, MC13XXX_ADC0, old_adc0); - mc13783->adcflags &= ~MC13783_ADC_WORKING; + mc13xxx->adcflags &= ~MC13XXX_ADC_WORKING; out: mc13xxx_unlock(mc13xxx); return ret; } -EXPORT_SYMBOL_GPL(mc13783_adc_do_conversion); +EXPORT_SYMBOL_GPL(mc13xxx_adc_do_conversion); static int mc13xxx_add_subdevice_pdata(struct mc13xxx *mc13xxx, const char *format, void *pdata, size_t pdata_size) @@ -716,6 +703,11 @@ static int mc13xxx_probe(struct spi_device *spi) enum mc13xxx_id id; int ret; + if (!pdata) { + dev_err(&spi->dev, "invalid platform data\n"); + return -EINVAL; + } + mc13xxx = kzalloc(sizeof(*mc13xxx), GFP_KERNEL); if (!mc13xxx) return -ENOMEM; @@ -763,10 +755,8 @@ err_revision: if (pdata->flags & MC13XXX_USE_CODEC) mc13xxx_add_subdevice(mc13xxx, "%s-codec"); - if (pdata->flags & MC13XXX_USE_REGULATOR) { - mc13xxx_add_subdevice_pdata(mc13xxx, "%s-regulator", - &pdata->regulators, sizeof(pdata->regulators)); - } + mc13xxx_add_subdevice_pdata(mc13xxx, "%s-regulator", + &pdata->regulators, sizeof(pdata->regulators)); if (pdata->flags & MC13XXX_USE_RTC) mc13xxx_add_subdevice(mc13xxx, "%s-rtc"); @@ -774,10 +764,14 @@ err_revision: if (pdata->flags & MC13XXX_USE_TOUCHSCREEN) mc13xxx_add_subdevice(mc13xxx, "%s-ts"); - if (pdata->flags & MC13XXX_USE_LED) + if (pdata->leds) mc13xxx_add_subdevice_pdata(mc13xxx, "%s-led", pdata->leds, sizeof(*pdata->leds)); + if (pdata->buttons) + mc13xxx_add_subdevice_pdata(mc13xxx, "%s-pwrbutton", + pdata->buttons, sizeof(*pdata->buttons)); + return 0; } diff --git a/drivers/mfd/menelaus.c b/drivers/mfd/menelaus.c index af5d9d0..cb4910a 100644 --- a/drivers/mfd/menelaus.c +++ b/drivers/mfd/menelaus.c @@ -1226,7 +1226,7 @@ static int menelaus_probe(struct i2c_client *client, menelaus_write_reg(MENELAUS_MCT_CTRL1, 0x73); if (client->irq > 0) { - err = request_irq(client->irq, menelaus_irq, IRQF_DISABLED, + err = request_irq(client->irq, menelaus_irq, 0, DRIVER_NAME, menelaus); if (err) { dev_dbg(&client->dev, "can't get IRQ %d, err %d\n", diff --git a/drivers/mfd/pcf50633-core.c b/drivers/mfd/pcf50633-core.c index 57868416..ff1a7e7 100644 --- a/drivers/mfd/pcf50633-core.c +++ b/drivers/mfd/pcf50633-core.c @@ -23,45 +23,22 @@ #include <linux/i2c.h> #include <linux/pm.h> #include <linux/slab.h> +#include <linux/regmap.h> +#include <linux/err.h> #include <linux/mfd/pcf50633/core.h> -static int __pcf50633_read(struct pcf50633 *pcf, u8 reg, int num, u8 *data) -{ - int ret; - - ret = i2c_smbus_read_i2c_block_data(pcf->i2c_client, reg, - num, data); - if (ret < 0) - dev_err(pcf->dev, "Error reading %d regs at %d\n", num, reg); - - return ret; -} - -static int __pcf50633_write(struct pcf50633 *pcf, u8 reg, int num, u8 *data) -{ - int ret; - - ret = i2c_smbus_write_i2c_block_data(pcf->i2c_client, reg, - num, data); - if (ret < 0) - dev_err(pcf->dev, "Error writing %d regs at %d\n", num, reg); - - return ret; - -} - /* Read a block of up to 32 regs */ int pcf50633_read_block(struct pcf50633 *pcf, u8 reg, int nr_regs, u8 *data) { int ret; - mutex_lock(&pcf->lock); - ret = __pcf50633_read(pcf, reg, nr_regs, data); - mutex_unlock(&pcf->lock); + ret = regmap_raw_read(pcf->regmap, reg, data, nr_regs); + if (ret != 0) + return ret; - return ret; + return nr_regs; } EXPORT_SYMBOL_GPL(pcf50633_read_block); @@ -71,21 +48,22 @@ int pcf50633_write_block(struct pcf50633 *pcf , u8 reg, { int ret; - mutex_lock(&pcf->lock); - ret = __pcf50633_write(pcf, reg, nr_regs, data); - mutex_unlock(&pcf->lock); + ret = regmap_raw_write(pcf->regmap, reg, data, nr_regs); + if (ret != 0) + return ret; - return ret; + return nr_regs; } EXPORT_SYMBOL_GPL(pcf50633_write_block); u8 pcf50633_reg_read(struct pcf50633 *pcf, u8 reg) { - u8 val; + unsigned int val; + int ret; - mutex_lock(&pcf->lock); - __pcf50633_read(pcf, reg, 1, &val); - mutex_unlock(&pcf->lock); + ret = regmap_read(pcf->regmap, reg, &val); + if (ret < 0) + return -1; return val; } @@ -93,56 +71,19 @@ EXPORT_SYMBOL_GPL(pcf50633_reg_read); int pcf50633_reg_write(struct pcf50633 *pcf, u8 reg, u8 val) { - int ret; - - mutex_lock(&pcf->lock); - ret = __pcf50633_write(pcf, reg, 1, &val); - mutex_unlock(&pcf->lock); - - return ret; + return regmap_write(pcf->regmap, reg, val); } EXPORT_SYMBOL_GPL(pcf50633_reg_write); int pcf50633_reg_set_bit_mask(struct pcf50633 *pcf, u8 reg, u8 mask, u8 val) { - int ret; - u8 tmp; - - val &= mask; - - mutex_lock(&pcf->lock); - ret = __pcf50633_read(pcf, reg, 1, &tmp); - if (ret < 0) - goto out; - - tmp &= ~mask; - tmp |= val; - ret = __pcf50633_write(pcf, reg, 1, &tmp); - -out: - mutex_unlock(&pcf->lock); - - return ret; + return regmap_update_bits(pcf->regmap, reg, mask, val); } EXPORT_SYMBOL_GPL(pcf50633_reg_set_bit_mask); int pcf50633_reg_clear_bits(struct pcf50633 *pcf, u8 reg, u8 val) { - int ret; - u8 tmp; - - mutex_lock(&pcf->lock); - ret = __pcf50633_read(pcf, reg, 1, &tmp); - if (ret < 0) - goto out; - - tmp &= ~val; - ret = __pcf50633_write(pcf, reg, 1, &tmp); - -out: - mutex_unlock(&pcf->lock); - - return ret; + return regmap_update_bits(pcf->regmap, reg, val, 0); } EXPORT_SYMBOL_GPL(pcf50633_reg_clear_bits); @@ -251,6 +192,11 @@ static int pcf50633_resume(struct device *dev) static SIMPLE_DEV_PM_OPS(pcf50633_pm, pcf50633_suspend, pcf50633_resume); +static struct regmap_config pcf50633_regmap_config = { + .reg_bits = 8, + .val_bits = 8, +}; + static int __devinit pcf50633_probe(struct i2c_client *client, const struct i2c_device_id *ids) { @@ -272,16 +218,23 @@ static int __devinit pcf50633_probe(struct i2c_client *client, mutex_init(&pcf->lock); + pcf->regmap = regmap_init_i2c(client, &pcf50633_regmap_config); + if (IS_ERR(pcf->regmap)) { + ret = PTR_ERR(pcf->regmap); + dev_err(pcf->dev, "Failed to allocate register map: %d\n", + ret); + goto err_free; + } + i2c_set_clientdata(client, pcf); pcf->dev = &client->dev; - pcf->i2c_client = client; version = pcf50633_reg_read(pcf, 0); variant = pcf50633_reg_read(pcf, 1); if (version < 0 || variant < 0) { dev_err(pcf->dev, "Unable to probe pcf50633\n"); ret = -ENODEV; - goto err_free; + goto err_regmap; } dev_info(pcf->dev, "Probed device version %d variant %d\n", @@ -328,6 +281,8 @@ static int __devinit pcf50633_probe(struct i2c_client *client, return 0; +err_regmap: + regmap_exit(pcf->regmap); err_free: kfree(pcf); @@ -351,6 +306,7 @@ static int __devexit pcf50633_remove(struct i2c_client *client) for (i = 0; i < PCF50633_NUM_REGULATORS; i++) platform_device_unregister(pcf->regulator_pdev[i]); + regmap_exit(pcf->regmap); kfree(pcf); return 0; diff --git a/drivers/mfd/tc3589x.c b/drivers/mfd/tc3589x.c index c27e515..de97974 100644 --- a/drivers/mfd/tc3589x.c +++ b/drivers/mfd/tc3589x.c @@ -357,6 +357,7 @@ static int __devexit tc3589x_remove(struct i2c_client *client) return 0; } +#ifdef CONFIG_PM static int tc3589x_suspend(struct device *dev) { struct tc3589x *tc3589x = dev_get_drvdata(dev); @@ -387,6 +388,7 @@ static int tc3589x_resume(struct device *dev) static const SIMPLE_DEV_PM_OPS(tc3589x_dev_pm_ops, tc3589x_suspend, tc3589x_resume); +#endif static const struct i2c_device_id tc3589x_id[] = { { "tc3589x", 24 }, diff --git a/drivers/mfd/timberdale.c b/drivers/mfd/timberdale.c index 696879e..02d6569 100644 --- a/drivers/mfd/timberdale.c +++ b/drivers/mfd/timberdale.c @@ -697,7 +697,7 @@ static int __devinit timb_probe(struct pci_dev *dev, dev_err(&dev->dev, "The driver supports an older " "version of the FPGA, please update the driver to " "support %d.%d\n", priv->fw.major, priv->fw.minor); - goto err_ioremap; + goto err_config; } if (priv->fw.major < TIMB_SUPPORTED_MAJOR || priv->fw.minor < TIMB_REQUIRED_MINOR) { @@ -705,13 +705,13 @@ static int __devinit timb_probe(struct pci_dev *dev, "please upgrade the FPGA to at least: %d.%d\n", priv->fw.major, priv->fw.minor, TIMB_SUPPORTED_MAJOR, TIMB_REQUIRED_MINOR); - goto err_ioremap; + goto err_config; } msix_entries = kzalloc(TIMBERDALE_NR_IRQS * sizeof(*msix_entries), GFP_KERNEL); if (!msix_entries) - goto err_ioremap; + goto err_config; for (i = 0; i < TIMBERDALE_NR_IRQS; i++) msix_entries[i].entry = i; @@ -825,6 +825,8 @@ err_mfd: err_create_file: pci_disable_msix(dev); err_msix: + kfree(msix_entries); +err_config: iounmap(priv->ctl_membase); err_ioremap: release_mem_region(priv->ctl_mapbase, CHIPCTLSIZE); @@ -833,7 +835,6 @@ err_request: err_start: pci_disable_device(dev); err_enable: - kfree(msix_entries); kfree(priv); pci_set_drvdata(dev, NULL); return -ENODEV; diff --git a/drivers/mfd/tps65912-core.c b/drivers/mfd/tps65912-core.c index 955bc00..5fec23a 100644 --- a/drivers/mfd/tps65912-core.c +++ b/drivers/mfd/tps65912-core.c @@ -131,9 +131,6 @@ int tps65912_device_init(struct tps65912 *tps65912) if (init_data == NULL) return -ENOMEM; - init_data->irq = pmic_plat_data->irq; - init_data->irq_base = pmic_plat_data->irq; - mutex_init(&tps65912->io_mutex); dev_set_drvdata(tps65912->dev, tps65912); @@ -153,10 +150,13 @@ int tps65912_device_init(struct tps65912 *tps65912) if (ret < 0) goto err; + init_data->irq = pmic_plat_data->irq; + init_data->irq_base = pmic_plat_data->irq; ret = tps65912_irq_init(tps65912, init_data->irq, init_data); if (ret < 0) goto err; + kfree(init_data); return ret; err: diff --git a/drivers/mfd/twl-core.c b/drivers/mfd/twl-core.c index 01ecfeee6..b8eef46 100644 --- a/drivers/mfd/twl-core.c +++ b/drivers/mfd/twl-core.c @@ -109,7 +109,7 @@ #define twl_has_watchdog() false #endif -#if defined(CONFIG_TWL4030_CODEC) || defined(CONFIG_TWL4030_CODEC_MODULE) ||\ +#if defined(CONFIG_MFD_TWL4030_AUDIO) || defined(CONFIG_MFD_TWL4030_AUDIO_MODULE) ||\ defined(CONFIG_TWL6040_CORE) || defined(CONFIG_TWL6040_CORE_MODULE) #define twl_has_codec() true #else diff --git a/drivers/mfd/twl4030-irq.c b/drivers/mfd/twl4030-irq.c index 8a7ee31..f062c8c 100644 --- a/drivers/mfd/twl4030-irq.c +++ b/drivers/mfd/twl4030-irq.c @@ -30,7 +30,6 @@ #include <linux/init.h> #include <linux/interrupt.h> #include <linux/irq.h> -#include <linux/kthread.h> #include <linux/slab.h> #include <linux/i2c/twl.h> @@ -278,59 +277,6 @@ static const struct sih sih_modules_twl5031[8] = { static unsigned twl4030_irq_base; -static struct completion irq_event; - -/* - * This thread processes interrupts reported by the Primary Interrupt Handler. - */ -static int twl4030_irq_thread(void *data) -{ - long irq = (long)data; - static unsigned i2c_errors; - static const unsigned max_i2c_errors = 100; - - - current->flags |= PF_NOFREEZE; - - while (!kthread_should_stop()) { - int ret; - int module_irq; - u8 pih_isr; - - /* Wait for IRQ, then read PIH irq status (also blocking) */ - wait_for_completion_interruptible(&irq_event); - - ret = twl_i2c_read_u8(TWL4030_MODULE_PIH, &pih_isr, - REG_PIH_ISR_P1); - if (ret) { - pr_warning("twl4030: I2C error %d reading PIH ISR\n", - ret); - if (++i2c_errors >= max_i2c_errors) { - printk(KERN_ERR "Maximum I2C error count" - " exceeded. Terminating %s.\n", - __func__); - break; - } - complete(&irq_event); - continue; - } - - /* these handlers deal with the relevant SIH irq status */ - local_irq_disable(); - for (module_irq = twl4030_irq_base; - pih_isr; - pih_isr >>= 1, module_irq++) { - if (pih_isr & 0x1) - generic_handle_irq(module_irq); - } - local_irq_enable(); - - enable_irq(irq); - } - - return 0; -} - /* * handle_twl4030_pih() is the desc->handle method for the twl4030 interrupt. * This is a chained interrupt, so there is no desc->action method for it. @@ -342,9 +288,25 @@ static int twl4030_irq_thread(void *data) */ static irqreturn_t handle_twl4030_pih(int irq, void *devid) { - /* Acknowledge, clear *AND* mask the interrupt... */ - disable_irq_nosync(irq); - complete(devid); + int module_irq; + irqreturn_t ret; + u8 pih_isr; + + ret = twl_i2c_read_u8(TWL4030_MODULE_PIH, &pih_isr, + REG_PIH_ISR_P1); + if (ret) { + pr_warning("twl4030: I2C error %d reading PIH ISR\n", ret); + return IRQ_NONE; + } + + /* these handlers deal with the relevant SIH irq status */ + for (module_irq = twl4030_irq_base; + pih_isr; + pih_isr >>= 1, module_irq++) { + if (pih_isr & 0x1) + handle_nested_irq(module_irq); + } + return IRQ_HANDLED; } /*----------------------------------------------------------------------*/ @@ -460,113 +422,17 @@ static inline void activate_irq(int irq) /*----------------------------------------------------------------------*/ -static DEFINE_SPINLOCK(sih_agent_lock); - -static struct workqueue_struct *wq; - struct sih_agent { int irq_base; const struct sih *sih; u32 imr; bool imr_change_pending; - struct work_struct mask_work; - - u32 edge_change; - struct work_struct edge_work; -}; - -static void twl4030_sih_do_mask(struct work_struct *work) -{ - struct sih_agent *agent; - const struct sih *sih; - union { - u8 bytes[4]; - u32 word; - } imr; - int status; - agent = container_of(work, struct sih_agent, mask_work); - - /* see what work we have */ - spin_lock_irq(&sih_agent_lock); - if (agent->imr_change_pending) { - sih = agent->sih; - /* byte[0] gets overwritten as we write ... */ - imr.word = cpu_to_le32(agent->imr << 8); - agent->imr_change_pending = false; - } else - sih = NULL; - spin_unlock_irq(&sih_agent_lock); - if (!sih) - return; - - /* write the whole mask ... simpler than subsetting it */ - status = twl_i2c_write(sih->module, imr.bytes, - sih->mask[irq_line].imr_offset, sih->bytes_ixr); - if (status) - pr_err("twl4030: %s, %s --> %d\n", __func__, - "write", status); -} - -static void twl4030_sih_do_edge(struct work_struct *work) -{ - struct sih_agent *agent; - const struct sih *sih; - u8 bytes[6]; u32 edge_change; - int status; - - agent = container_of(work, struct sih_agent, edge_work); - - /* see what work we have */ - spin_lock_irq(&sih_agent_lock); - edge_change = agent->edge_change; - agent->edge_change = 0; - sih = edge_change ? agent->sih : NULL; - spin_unlock_irq(&sih_agent_lock); - if (!sih) - return; - - /* Read, reserving first byte for write scratch. Yes, this - * could be cached for some speedup ... but be careful about - * any processor on the other IRQ line, EDR registers are - * shared. - */ - status = twl_i2c_read(sih->module, bytes + 1, - sih->edr_offset, sih->bytes_edr); - if (status) { - pr_err("twl4030: %s, %s --> %d\n", __func__, - "read", status); - return; - } - - /* Modify only the bits we know must change */ - while (edge_change) { - int i = fls(edge_change) - 1; - struct irq_data *idata = irq_get_irq_data(i + agent->irq_base); - int byte = 1 + (i >> 2); - int off = (i & 0x3) * 2; - unsigned int type; - - bytes[byte] &= ~(0x03 << off); - type = irqd_get_trigger_type(idata); - if (type & IRQ_TYPE_EDGE_RISING) - bytes[byte] |= BIT(off + 1); - if (type & IRQ_TYPE_EDGE_FALLING) - bytes[byte] |= BIT(off + 0); - - edge_change &= ~BIT(i); - } - - /* Write */ - status = twl_i2c_write(sih->module, bytes, - sih->edr_offset, sih->bytes_edr); - if (status) - pr_err("twl4030: %s, %s --> %d\n", __func__, - "write", status); -} + struct mutex irq_lock; +}; /*----------------------------------------------------------------------*/ @@ -579,50 +445,125 @@ static void twl4030_sih_do_edge(struct work_struct *work) static void twl4030_sih_mask(struct irq_data *data) { - struct sih_agent *sih = irq_data_get_irq_chip_data(data); - unsigned long flags; - - spin_lock_irqsave(&sih_agent_lock, flags); - sih->imr |= BIT(data->irq - sih->irq_base); - sih->imr_change_pending = true; - queue_work(wq, &sih->mask_work); - spin_unlock_irqrestore(&sih_agent_lock, flags); + struct sih_agent *agent = irq_data_get_irq_chip_data(data); + + agent->imr |= BIT(data->irq - agent->irq_base); + agent->imr_change_pending = true; } static void twl4030_sih_unmask(struct irq_data *data) { - struct sih_agent *sih = irq_data_get_irq_chip_data(data); - unsigned long flags; - - spin_lock_irqsave(&sih_agent_lock, flags); - sih->imr &= ~BIT(data->irq - sih->irq_base); - sih->imr_change_pending = true; - queue_work(wq, &sih->mask_work); - spin_unlock_irqrestore(&sih_agent_lock, flags); + struct sih_agent *agent = irq_data_get_irq_chip_data(data); + + agent->imr &= ~BIT(data->irq - agent->irq_base); + agent->imr_change_pending = true; } static int twl4030_sih_set_type(struct irq_data *data, unsigned trigger) { - struct sih_agent *sih = irq_data_get_irq_chip_data(data); - unsigned long flags; + struct sih_agent *agent = irq_data_get_irq_chip_data(data); if (trigger & ~(IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING)) return -EINVAL; - spin_lock_irqsave(&sih_agent_lock, flags); - if (irqd_get_trigger_type(data) != trigger) { - sih->edge_change |= BIT(data->irq - sih->irq_base); - queue_work(wq, &sih->edge_work); - } - spin_unlock_irqrestore(&sih_agent_lock, flags); + if (irqd_get_trigger_type(data) != trigger) + agent->edge_change |= BIT(data->irq - agent->irq_base); + return 0; } +static void twl4030_sih_bus_lock(struct irq_data *data) +{ + struct sih_agent *agent = irq_data_get_irq_chip_data(data); + + mutex_lock(&agent->irq_lock); +} + +static void twl4030_sih_bus_sync_unlock(struct irq_data *data) +{ + struct sih_agent *agent = irq_data_get_irq_chip_data(data); + const struct sih *sih = agent->sih; + int status; + + if (agent->imr_change_pending) { + union { + u32 word; + u8 bytes[4]; + } imr; + + /* byte[0] gets overwriten as we write ... */ + imr.word = cpu_to_le32(agent->imr << 8); + agent->imr_change_pending = false; + + /* write the whole mask ... simpler than subsetting it */ + status = twl_i2c_write(sih->module, imr.bytes, + sih->mask[irq_line].imr_offset, + sih->bytes_ixr); + if (status) + pr_err("twl4030: %s, %s --> %d\n", __func__, + "write", status); + } + + if (agent->edge_change) { + u32 edge_change; + u8 bytes[6]; + + edge_change = agent->edge_change; + agent->edge_change = 0; + + /* + * Read, reserving first byte for write scratch. Yes, this + * could be cached for some speedup ... but be careful about + * any processor on the other IRQ line, EDR registers are + * shared. + */ + status = twl_i2c_read(sih->module, bytes + 1, + sih->edr_offset, sih->bytes_edr); + if (status) { + pr_err("twl4030: %s, %s --> %d\n", __func__, + "read", status); + return; + } + + /* Modify only the bits we know must change */ + while (edge_change) { + int i = fls(edge_change) - 1; + struct irq_data *idata; + int byte = 1 + (i >> 2); + int off = (i & 0x3) * 2; + unsigned int type; + + idata = irq_get_irq_data(i + agent->irq_base); + + bytes[byte] &= ~(0x03 << off); + + type = irqd_get_trigger_type(idata); + if (type & IRQ_TYPE_EDGE_RISING) + bytes[byte] |= BIT(off + 1); + if (type & IRQ_TYPE_EDGE_FALLING) + bytes[byte] |= BIT(off + 0); + + edge_change &= ~BIT(i); + } + + /* Write */ + status = twl_i2c_write(sih->module, bytes, + sih->edr_offset, sih->bytes_edr); + if (status) + pr_err("twl4030: %s, %s --> %d\n", __func__, + "write", status); + } + + mutex_unlock(&agent->irq_lock); +} + static struct irq_chip twl4030_sih_irq_chip = { .name = "twl4030", - .irq_mask = twl4030_sih_mask, + .irq_mask = twl4030_sih_mask, .irq_unmask = twl4030_sih_unmask, .irq_set_type = twl4030_sih_set_type, + .irq_bus_lock = twl4030_sih_bus_lock, + .irq_bus_sync_unlock = twl4030_sih_bus_sync_unlock, }; /*----------------------------------------------------------------------*/ @@ -655,9 +596,7 @@ static void handle_twl4030_sih(unsigned irq, struct irq_desc *desc) int isr; /* reading ISR acks the IRQs, using clear-on-read mode */ - local_irq_enable(); isr = sih_read_isr(sih); - local_irq_disable(); if (isr < 0) { pr_err("twl4030: %s SIH, read ISR error %d\n", @@ -672,7 +611,7 @@ static void handle_twl4030_sih(unsigned irq, struct irq_desc *desc) isr &= ~BIT(irq); if (irq < sih->bits) - generic_handle_irq(agent->irq_base + irq); + handle_nested_irq(agent->irq_base + irq); else pr_err("twl4030: %s SIH, invalid ISR bit %d\n", sih->name, irq); @@ -718,15 +657,14 @@ int twl4030_sih_setup(int module) agent->irq_base = irq_base; agent->sih = sih; agent->imr = ~0; - INIT_WORK(&agent->mask_work, twl4030_sih_do_mask); - INIT_WORK(&agent->edge_work, twl4030_sih_do_edge); + mutex_init(&agent->irq_lock); for (i = 0; i < sih->bits; i++) { irq = irq_base + i; + irq_set_chip_data(irq, agent); irq_set_chip_and_handler(irq, &twl4030_sih_irq_chip, handle_edge_irq); - irq_set_chip_data(irq, agent); activate_irq(irq); } @@ -758,7 +696,6 @@ int twl4030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end) int status; int i; - struct task_struct *task; /* * Mask and clear all TWL4030 interrupts since initially we do @@ -768,12 +705,6 @@ int twl4030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end) if (status < 0) return status; - wq = create_singlethread_workqueue("twl4030-irqchip"); - if (!wq) { - pr_err("twl4030: workqueue FAIL\n"); - return -ESRCH; - } - twl4030_irq_base = irq_base; /* install an irq handler for each of the SIH modules; @@ -787,6 +718,7 @@ int twl4030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end) for (i = irq_base; i < irq_end; i++) { irq_set_chip_and_handler(i, &twl4030_irq_chip, handle_simple_irq); + irq_set_nested_thread(i, 1); activate_irq(i); } twl4030_irq_next = i; @@ -801,34 +733,22 @@ int twl4030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end) } /* install an irq handler to demultiplex the TWL4030 interrupt */ - - - init_completion(&irq_event); - - status = request_irq(irq_num, handle_twl4030_pih, IRQF_DISABLED, - "TWL4030-PIH", &irq_event); + status = request_threaded_irq(irq_num, NULL, handle_twl4030_pih, 0, + "TWL4030-PIH", NULL); if (status < 0) { pr_err("twl4030: could not claim irq%d: %d\n", irq_num, status); goto fail_rqirq; } - task = kthread_run(twl4030_irq_thread, (void *)(long)irq_num, - "twl4030-irq"); - if (IS_ERR(task)) { - pr_err("twl4030: could not create irq %d thread!\n", irq_num); - status = PTR_ERR(task); - goto fail_kthread; - } return status; -fail_kthread: - free_irq(irq_num, &irq_event); fail_rqirq: /* clean up twl4030_sih_setup */ fail: - for (i = irq_base; i < irq_end; i++) + for (i = irq_base; i < irq_end; i++) { + irq_set_nested_thread(i, 0); irq_set_chip_and_handler(i, NULL, NULL); - destroy_workqueue(wq); - wq = NULL; + } + return status; } diff --git a/drivers/mfd/twl4030-madc.c b/drivers/mfd/twl4030-madc.c index 7cbf2aa..834f824 100644 --- a/drivers/mfd/twl4030-madc.c +++ b/drivers/mfd/twl4030-madc.c @@ -740,6 +740,28 @@ static int __devinit twl4030_madc_probe(struct platform_device *pdev) TWL4030_BCI_BCICTL1); goto err_i2c; } + + /* Check that MADC clock is on */ + ret = twl_i2c_read_u8(TWL4030_MODULE_INTBR, ®val, TWL4030_REG_GPBR1); + if (ret) { + dev_err(&pdev->dev, "unable to read reg GPBR1 0x%X\n", + TWL4030_REG_GPBR1); + goto err_i2c; + } + + /* If MADC clk is not on, turn it on */ + if (!(regval & TWL4030_GPBR1_MADC_HFCLK_EN)) { + dev_info(&pdev->dev, "clk disabled, enabling\n"); + regval |= TWL4030_GPBR1_MADC_HFCLK_EN; + ret = twl_i2c_write_u8(TWL4030_MODULE_INTBR, regval, + TWL4030_REG_GPBR1); + if (ret) { + dev_err(&pdev->dev, "unable to write reg GPBR1 0x%X\n", + TWL4030_REG_GPBR1); + goto err_i2c; + } + } + platform_set_drvdata(pdev, madc); mutex_init(&madc->lock); ret = request_threaded_irq(platform_get_irq(pdev, 0), NULL, diff --git a/drivers/mfd/twl6030-irq.c b/drivers/mfd/twl6030-irq.c index eb3b5f8..deec3ec 100644 --- a/drivers/mfd/twl6030-irq.c +++ b/drivers/mfd/twl6030-irq.c @@ -37,6 +37,7 @@ #include <linux/kthread.h> #include <linux/i2c/twl.h> #include <linux/platform_device.h> +#include <linux/suspend.h> #include "twl-core.h" @@ -83,8 +84,48 @@ static int twl6030_interrupt_mapping[24] = { /*----------------------------------------------------------------------*/ static unsigned twl6030_irq_base; +static int twl_irq; +static bool twl_irq_wake_enabled; static struct completion irq_event; +static atomic_t twl6030_wakeirqs = ATOMIC_INIT(0); + +static int twl6030_irq_pm_notifier(struct notifier_block *notifier, + unsigned long pm_event, void *unused) +{ + int chained_wakeups; + + switch (pm_event) { + case PM_SUSPEND_PREPARE: + chained_wakeups = atomic_read(&twl6030_wakeirqs); + + if (chained_wakeups && !twl_irq_wake_enabled) { + if (enable_irq_wake(twl_irq)) + pr_err("twl6030 IRQ wake enable failed\n"); + else + twl_irq_wake_enabled = true; + } else if (!chained_wakeups && twl_irq_wake_enabled) { + disable_irq_wake(twl_irq); + twl_irq_wake_enabled = false; + } + + disable_irq(twl_irq); + break; + + case PM_POST_SUSPEND: + enable_irq(twl_irq); + break; + + default: + break; + } + + return NOTIFY_DONE; +} + +static struct notifier_block twl6030_irq_pm_notifier_block = { + .notifier_call = twl6030_irq_pm_notifier, +}; /* * This thread processes interrupts reported by the Primary Interrupt Handler. @@ -187,6 +228,16 @@ static inline void activate_irq(int irq) #endif } +int twl6030_irq_set_wake(struct irq_data *d, unsigned int on) +{ + if (on) + atomic_inc(&twl6030_wakeirqs); + else + atomic_dec(&twl6030_wakeirqs); + + return 0; +} + /*----------------------------------------------------------------------*/ static unsigned twl6030_irq_next; @@ -318,10 +369,12 @@ int twl6030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end) twl6030_irq_chip = dummy_irq_chip; twl6030_irq_chip.name = "twl6030"; twl6030_irq_chip.irq_set_type = NULL; + twl6030_irq_chip.irq_set_wake = twl6030_irq_set_wake; for (i = irq_base; i < irq_end; i++) { irq_set_chip_and_handler(i, &twl6030_irq_chip, handle_simple_irq); + irq_set_chip_data(i, (void *)irq_num); activate_irq(i); } @@ -331,6 +384,14 @@ int twl6030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end) /* install an irq handler to demultiplex the TWL6030 interrupt */ init_completion(&irq_event); + + status = request_irq(irq_num, handle_twl6030_pih, 0, + "TWL6030-PIH", &irq_event); + if (status < 0) { + pr_err("twl6030: could not claim irq%d: %d\n", irq_num, status); + goto fail_irq; + } + task = kthread_run(twl6030_irq_thread, (void *)irq_num, "twl6030-irq"); if (IS_ERR(task)) { pr_err("twl6030: could not create irq %d thread!\n", irq_num); @@ -338,17 +399,14 @@ int twl6030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end) goto fail_kthread; } - status = request_irq(irq_num, handle_twl6030_pih, IRQF_DISABLED, - "TWL6030-PIH", &irq_event); - if (status < 0) { - pr_err("twl6030: could not claim irq%d: %d\n", irq_num, status); - goto fail_irq; - } + twl_irq = irq_num; + register_pm_notifier(&twl6030_irq_pm_notifier_block); return status; -fail_irq: - free_irq(irq_num, &irq_event); fail_kthread: + free_irq(irq_num, &irq_event); + +fail_irq: for (i = irq_base; i < irq_end; i++) irq_set_chip_and_handler(i, NULL, NULL); return status; @@ -356,6 +414,7 @@ fail_kthread: int twl6030_exit_irq(void) { + unregister_pm_notifier(&twl6030_irq_pm_notifier_block); if (twl6030_irq_base) { pr_err("twl6030: can't yet clean up IRQs?\n"); diff --git a/drivers/mfd/wm831x-irq.c b/drivers/mfd/wm831x-irq.c index ada1835..f4747a4 100644 --- a/drivers/mfd/wm831x-irq.c +++ b/drivers/mfd/wm831x-irq.c @@ -420,12 +420,19 @@ static int wm831x_irq_set_type(struct irq_data *data, unsigned int type) switch (type) { case IRQ_TYPE_EDGE_BOTH: wm831x->gpio_update[irq] = 0x10000 | WM831X_GPN_INT_MODE; + wm831x->gpio_level[irq] = false; break; case IRQ_TYPE_EDGE_RISING: wm831x->gpio_update[irq] = 0x10000 | WM831X_GPN_POL; + wm831x->gpio_level[irq] = false; break; case IRQ_TYPE_EDGE_FALLING: wm831x->gpio_update[irq] = 0x10000; + wm831x->gpio_level[irq] = false; + break; + case IRQ_TYPE_LEVEL_HIGH: + wm831x->gpio_update[irq] = 0x10000 | WM831X_GPN_POL; + wm831x->gpio_level[irq] = true; break; default: return -EINVAL; @@ -449,7 +456,7 @@ static irqreturn_t wm831x_irq_thread(int irq, void *data) { struct wm831x *wm831x = data; unsigned int i; - int primary, status_addr; + int primary, status_addr, ret; int status_regs[WM831X_NUM_IRQ_REGS] = { 0 }; int read[WM831X_NUM_IRQ_REGS] = { 0 }; int *status; @@ -507,6 +514,19 @@ static irqreturn_t wm831x_irq_thread(int irq, void *data) if (*status & wm831x_irqs[i].mask) handle_nested_irq(wm831x->irq_base + i); + + /* Simulate an edge triggered IRQ by polling the input + * status. This is sucky but improves interoperability. + */ + if (primary == WM831X_GP_INT && + wm831x->gpio_level[i - WM831X_IRQ_GPIO_1]) { + ret = wm831x_reg_read(wm831x, WM831X_GPIO_LEVEL); + while (ret & 1 << (i - WM831X_IRQ_GPIO_1)) { + handle_nested_irq(wm831x->irq_base + i); + ret = wm831x_reg_read(wm831x, + WM831X_GPIO_LEVEL); + } + } } out: @@ -596,8 +616,6 @@ int wm831x_irq_init(struct wm831x *wm831x, int irq) "No interrupt specified - functionality limited\n"); } - - /* Enable top level interrupts, we mask at secondary level */ wm831x_reg_write(wm831x, WM831X_SYSTEM_INTERRUPTS_MASK, 0); diff --git a/drivers/mfd/wm8994-core.c b/drivers/mfd/wm8994-core.c index b03be1d..5d6ba13 100644 --- a/drivers/mfd/wm8994-core.c +++ b/drivers/mfd/wm8994-core.c @@ -217,6 +217,47 @@ static int wm8994_suspend(struct device *dev) return 0; } + ret = wm8994_reg_read(wm8994, WM8994_POWER_MANAGEMENT_4); + if (ret < 0) { + dev_err(dev, "Failed to read power status: %d\n", ret); + } else if (ret & (WM8994_AIF2ADCL_ENA | WM8994_AIF2ADCR_ENA | + WM8994_AIF1ADC2L_ENA | WM8994_AIF1ADC2R_ENA | + WM8994_AIF1ADC1L_ENA | WM8994_AIF1ADC1R_ENA)) { + dev_dbg(dev, "CODEC still active, ignoring suspend\n"); + return 0; + } + + ret = wm8994_reg_read(wm8994, WM8994_POWER_MANAGEMENT_5); + if (ret < 0) { + dev_err(dev, "Failed to read power status: %d\n", ret); + } else if (ret & (WM8994_AIF2DACL_ENA | WM8994_AIF2DACR_ENA | + WM8994_AIF1DAC2L_ENA | WM8994_AIF1DAC2R_ENA | + WM8994_AIF1DAC1L_ENA | WM8994_AIF1DAC1R_ENA)) { + dev_dbg(dev, "CODEC still active, ignoring suspend\n"); + return 0; + } + + switch (wm8994->type) { + case WM8958: + ret = wm8994_reg_read(wm8994, WM8958_MIC_DETECT_1); + if (ret < 0) { + dev_err(dev, "Failed to read power status: %d\n", ret); + } else if (ret & WM8958_MICD_ENA) { + dev_dbg(dev, "CODEC still active, ignoring suspend\n"); + return 0; + } + break; + default: + break; + } + + /* Disable LDO pulldowns while the device is suspended if we + * don't know that something will be driving them. */ + if (!wm8994->ldo_ena_always_driven) + wm8994_set_bits(wm8994, WM8994_PULL_CONTROL_2, + WM8994_LDO1ENA_PD | WM8994_LDO2ENA_PD, + WM8994_LDO1ENA_PD | WM8994_LDO2ENA_PD); + /* GPIO configuration state is saved here since we may be configuring * the GPIO alternate functions even if we're not using the gpiolib * driver for them. @@ -286,6 +327,11 @@ static int wm8994_resume(struct device *dev) if (ret < 0) dev_err(dev, "Failed to restore GPIO registers: %d\n", ret); + /* Disable LDO pulldowns while the device is active */ + wm8994_set_bits(wm8994, WM8994_PULL_CONTROL_2, + WM8994_LDO1ENA_PD | WM8994_LDO2ENA_PD, + 0); + wm8994->suspended = false; return 0; @@ -467,8 +513,15 @@ static int wm8994_device_init(struct wm8994 *wm8994, int irq) pdata->gpio_defaults[i]); } } + + wm8994->ldo_ena_always_driven = pdata->ldo_ena_always_driven; } + /* Disable LDO pulldowns while the device is active */ + wm8994_set_bits(wm8994, WM8994_PULL_CONTROL_2, + WM8994_LDO1ENA_PD | WM8994_LDO2ENA_PD, + 0); + /* In some system designs where the regulators are not in use, * we can achieve a small reduction in leakage currents by * floating LDO outputs. This bit makes no difference if the |
