diff options
| -rw-r--r-- | arch/arm/mach-ux500/board-mop500.c | 2 | ||||
| -rw-r--r-- | drivers/mfd/Kconfig | 9 | ||||
| -rw-r--r-- | drivers/mfd/Makefile | 2 | ||||
| -rw-r--r-- | drivers/mfd/ab4500-core.c | 209 | ||||
| -rw-r--r-- | drivers/mfd/ab8500-core.c | 444 | ||||
| -rw-r--r-- | drivers/mfd/ab8500-spi.c | 133 | ||||
| -rw-r--r-- | include/linux/mfd/ab4500.h | 262 | ||||
| -rw-r--r-- | include/linux/mfd/ab8500.h | 128 |
8 files changed, 712 insertions, 477 deletions
diff --git a/arch/arm/mach-ux500/board-mop500.c b/arch/arm/mach-ux500/board-mop500.c index 072196c..bb8d7b7 100644 --- a/arch/arm/mach-ux500/board-mop500.c +++ b/arch/arm/mach-ux500/board-mop500.c @@ -50,7 +50,7 @@ struct pl022_config_chip ab4500_chip_info = { static struct spi_board_info u8500_spi_devices[] = { { - .modalias = "ab4500", + .modalias = "ab8500", .controller_data = &ab4500_chip_info, .max_speed_hz = 12000000, .bus_num = 0, diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index b84b707..9da0e50 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -420,11 +420,12 @@ config EZX_PCAP This enables the PCAP ASIC present on EZX Phones. This is needed for MMC, TouchScreen, Sound, USB, etc.. -config AB4500_CORE - tristate "ST-Ericsson's AB4500 Mixed Signal Power management chip" - depends on SPI +config AB8500_CORE + bool "ST-Ericsson AB8500 Mixed Signal Power Management chip" + depends on SPI=y && GENERIC_HARDIRQS + select MFD_CORE help - Select this option to enable access to AB4500 power management + Select this option to enable access to AB8500 power management chip. This connects to U8500 on the SSP/SPI bus and exports read/write functions for the devices to get access to this chip. This chip embeds various other multimedia funtionalities as well. diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index ca1517e..fb503e7 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -64,8 +64,8 @@ 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-$(CONFIG_AB4500_CORE) += ab4500-core.o obj-$(CONFIG_AB3550_CORE) += ab3550-core.o +obj-$(CONFIG_AB8500_CORE) += ab8500-core.o ab8500-spi.o obj-$(CONFIG_MFD_TIMBERDALE) += timberdale.o obj-$(CONFIG_PMIC_ADP5520) += adp5520.o obj-$(CONFIG_LPC_SCH) += lpc_sch.o diff --git a/drivers/mfd/ab4500-core.c b/drivers/mfd/ab4500-core.c deleted file mode 100644 index c275daa..0000000 --- a/drivers/mfd/ab4500-core.c +++ /dev/null @@ -1,209 +0,0 @@ -/* - * Copyright (C) 2009 ST-Ericsson - * - * Author: Srinidhi KASAGAR <srinidhi.kasagar@stericsson.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. - * - * AB4500 is a companion power management chip used with U8500. - * On this platform, this is interfaced with SSP0 controller - * which is a ARM primecell pl022. - * - * At the moment the module just exports read/write features. - * Interrupt management to be added - TODO. - */ -#include <linux/kernel.h> -#include <linux/slab.h> -#include <linux/init.h> -#include <linux/module.h> -#include <linux/platform_device.h> -#include <linux/spi/spi.h> -#include <linux/mfd/ab4500.h> - -/* just required if probe fails, we need to - * unregister the device - */ -static struct spi_driver ab4500_driver; - -/* - * This funtion writes to any AB4500 registers using - * SPI protocol & before it writes it packs the data - * in the below 24 bit frame format - * - * *|------------------------------------| - * *| 23|22...18|17.......10|9|8|7......0| - * *| r/w bank adr data | - * * ------------------------------------ - * - * This function shouldn't be called from interrupt - * context - */ -int ab4500_write(struct ab4500 *ab4500, unsigned char block, - unsigned long addr, unsigned char data) -{ - struct spi_transfer xfer; - struct spi_message msg; - int err; - unsigned long spi_data = - block << 18 | addr << 10 | data; - - mutex_lock(&ab4500->lock); - ab4500->tx_buf[0] = spi_data; - ab4500->rx_buf[0] = 0; - - xfer.tx_buf = ab4500->tx_buf; - xfer.rx_buf = NULL; - xfer.len = sizeof(unsigned long); - - spi_message_init(&msg); - spi_message_add_tail(&xfer, &msg); - - err = spi_sync(ab4500->spi, &msg); - mutex_unlock(&ab4500->lock); - - return err; -} -EXPORT_SYMBOL(ab4500_write); - -int ab4500_read(struct ab4500 *ab4500, unsigned char block, - unsigned long addr) -{ - struct spi_transfer xfer; - struct spi_message msg; - unsigned long spi_data = - 1 << 23 | block << 18 | addr << 10; - - mutex_lock(&ab4500->lock); - ab4500->tx_buf[0] = spi_data; - ab4500->rx_buf[0] = 0; - - xfer.tx_buf = ab4500->tx_buf; - xfer.rx_buf = ab4500->rx_buf; - xfer.len = sizeof(unsigned long); - - spi_message_init(&msg); - spi_message_add_tail(&xfer, &msg); - - spi_sync(ab4500->spi, &msg); - mutex_unlock(&ab4500->lock); - - return ab4500->rx_buf[0]; -} -EXPORT_SYMBOL(ab4500_read); - -/* ref: ab3100 core */ -#define AB4500_DEVICE(devname, devid) \ -static struct platform_device ab4500_##devname##_device = { \ - .name = devid, \ - .id = -1, \ -} - -/* list of childern devices of ab4500 - all are - * not populated here - TODO - */ -AB4500_DEVICE(charger, "ab4500-charger"); -AB4500_DEVICE(audio, "ab4500-audio"); -AB4500_DEVICE(usb, "ab4500-usb"); -AB4500_DEVICE(tvout, "ab4500-tvout"); -AB4500_DEVICE(sim, "ab4500-sim"); -AB4500_DEVICE(gpadc, "ab4500-gpadc"); -AB4500_DEVICE(clkmgt, "ab4500-clkmgt"); -AB4500_DEVICE(misc, "ab4500-misc"); - -static struct platform_device *ab4500_platform_devs[] = { - &ab4500_charger_device, - &ab4500_audio_device, - &ab4500_usb_device, - &ab4500_tvout_device, - &ab4500_sim_device, - &ab4500_gpadc_device, - &ab4500_clkmgt_device, - &ab4500_misc_device, -}; - -static int __init ab4500_probe(struct spi_device *spi) -{ - struct ab4500 *ab4500; - unsigned char revision; - int err = 0; - int i; - - ab4500 = kzalloc(sizeof *ab4500, GFP_KERNEL); - if (!ab4500) { - dev_err(&spi->dev, "could not allocate AB4500\n"); - err = -ENOMEM; - goto not_detect; - } - - ab4500->spi = spi; - spi_set_drvdata(spi, ab4500); - - mutex_init(&ab4500->lock); - - /* read the revision register */ - revision = ab4500_read(ab4500, AB4500_MISC, AB4500_REV_REG); - - /* revision id 0x0 is for early drop, 0x10 is for cut1.0 */ - if (revision == 0x0 || revision == 0x10) - dev_info(&spi->dev, "Detected chip: %s, revision = %x\n", - ab4500_driver.driver.name, revision); - else { - dev_err(&spi->dev, "unknown chip: 0x%x\n", revision); - goto not_detect; - } - - for (i = 0; i < ARRAY_SIZE(ab4500_platform_devs); i++) { - ab4500_platform_devs[i]->dev.parent = - &spi->dev; - platform_set_drvdata(ab4500_platform_devs[i], ab4500); - } - - /* register the ab4500 platform devices */ - platform_add_devices(ab4500_platform_devs, - ARRAY_SIZE(ab4500_platform_devs)); - - return err; - - not_detect: - spi_unregister_driver(&ab4500_driver); - kfree(ab4500); - return err; -} - -static int __devexit ab4500_remove(struct spi_device *spi) -{ - struct ab4500 *ab4500 = - spi_get_drvdata(spi); - - kfree(ab4500); - - return 0; -} - -static struct spi_driver ab4500_driver = { - .driver = { - .name = "ab4500", - .owner = THIS_MODULE, - }, - .probe = ab4500_probe, - .remove = __devexit_p(ab4500_remove) -}; - -static int __devinit ab4500_init(void) -{ - return spi_register_driver(&ab4500_driver); -} - -static void __exit ab4500_exit(void) -{ - spi_unregister_driver(&ab4500_driver); -} - -subsys_initcall(ab4500_init); -module_exit(ab4500_exit); - -MODULE_AUTHOR("Srinidhi KASAGAR <srinidhi.kasagar@stericsson.com"); -MODULE_DESCRIPTION("AB4500 core driver"); -MODULE_LICENSE("GPL"); diff --git a/drivers/mfd/ab8500-core.c b/drivers/mfd/ab8500-core.c new file mode 100644 index 0000000..f3d26fa --- /dev/null +++ b/drivers/mfd/ab8500-core.c @@ -0,0 +1,444 @@ +/* + * Copyright (C) ST-Ericsson SA 2010 + * + * License Terms: GNU General Public License v2 + * Author: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> + * Author: Rabin Vincent <rabin.vincent@stericsson.com> + */ + +#include <linux/kernel.h> +#include <linux/slab.h> +#include <linux/init.h> +#include <linux/irq.h> +#include <linux/delay.h> +#include <linux/interrupt.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/mfd/core.h> +#include <linux/mfd/ab8500.h> + +/* + * Interrupt register offsets + * Bank : 0x0E + */ +#define AB8500_IT_SOURCE1_REG 0x0E00 +#define AB8500_IT_SOURCE2_REG 0x0E01 +#define AB8500_IT_SOURCE3_REG 0x0E02 +#define AB8500_IT_SOURCE4_REG 0x0E03 +#define AB8500_IT_SOURCE5_REG 0x0E04 +#define AB8500_IT_SOURCE6_REG 0x0E05 +#define AB8500_IT_SOURCE7_REG 0x0E06 +#define AB8500_IT_SOURCE8_REG 0x0E07 +#define AB8500_IT_SOURCE19_REG 0x0E12 +#define AB8500_IT_SOURCE20_REG 0x0E13 +#define AB8500_IT_SOURCE21_REG 0x0E14 +#define AB8500_IT_SOURCE22_REG 0x0E15 +#define AB8500_IT_SOURCE23_REG 0x0E16 +#define AB8500_IT_SOURCE24_REG 0x0E17 + +/* + * latch registers + */ +#define AB8500_IT_LATCH1_REG 0x0E20 +#define AB8500_IT_LATCH2_REG 0x0E21 +#define AB8500_IT_LATCH3_REG 0x0E22 +#define AB8500_IT_LATCH4_REG 0x0E23 +#define AB8500_IT_LATCH5_REG 0x0E24 +#define AB8500_IT_LATCH6_REG 0x0E25 +#define AB8500_IT_LATCH7_REG 0x0E26 +#define AB8500_IT_LATCH8_REG 0x0E27 +#define AB8500_IT_LATCH9_REG 0x0E28 +#define AB8500_IT_LATCH10_REG 0x0E29 +#define AB8500_IT_LATCH19_REG 0x0E32 +#define AB8500_IT_LATCH20_REG 0x0E33 +#define AB8500_IT_LATCH21_REG 0x0E34 +#define AB8500_IT_LATCH22_REG 0x0E35 +#define AB8500_IT_LATCH23_REG 0x0E36 +#define AB8500_IT_LATCH24_REG 0x0E37 + +/* + * mask registers + */ + +#define AB8500_IT_MASK1_REG 0x0E40 +#define AB8500_IT_MASK2_REG 0x0E41 +#define AB8500_IT_MASK3_REG 0x0E42 +#define AB8500_IT_MASK4_REG 0x0E43 +#define AB8500_IT_MASK5_REG 0x0E44 +#define AB8500_IT_MASK6_REG 0x0E45 +#define AB8500_IT_MASK7_REG 0x0E46 +#define AB8500_IT_MASK8_REG 0x0E47 +#define AB8500_IT_MASK9_REG 0x0E48 +#define AB8500_IT_MASK10_REG 0x0E49 +#define AB8500_IT_MASK11_REG 0x0E4A +#define AB8500_IT_MASK12_REG 0x0E4B +#define AB8500_IT_MASK13_REG 0x0E4C +#define AB8500_IT_MASK14_REG 0x0E4D +#define AB8500_IT_MASK15_REG 0x0E4E +#define AB8500_IT_MASK16_REG 0x0E4F +#define AB8500_IT_MASK17_REG 0x0E50 +#define AB8500_IT_MASK18_REG 0x0E51 +#define AB8500_IT_MASK19_REG 0x0E52 +#define AB8500_IT_MASK20_REG 0x0E53 +#define AB8500_IT_MASK21_REG 0x0E54 +#define AB8500_IT_MASK22_REG 0x0E55 +#define AB8500_IT_MASK23_REG 0x0E56 +#define AB8500_IT_MASK24_REG 0x0E57 + +#define AB8500_REV_REG 0x1080 + +/* + * Map interrupt numbers to the LATCH and MASK register offsets, Interrupt + * numbers are indexed into this array with (num / 8). + * + * This is one off from the register names, i.e. AB8500_IT_MASK1_REG is at + * offset 0. + */ +static const int ab8500_irq_regoffset[AB8500_NUM_IRQ_REGS] = { + 0, 1, 2, 3, 4, 6, 7, 8, 9, 18, 19, 20, 21, +}; + +static int __ab8500_write(struct ab8500 *ab8500, u16 addr, u8 data) +{ + int ret; + + dev_vdbg(ab8500->dev, "wr: addr %#x <= %#x\n", addr, data); + + ret = ab8500->write(ab8500, addr, data); + if (ret < 0) + dev_err(ab8500->dev, "failed to write reg %#x: %d\n", + addr, ret); + + return ret; +} + +/** + * ab8500_write() - write an AB8500 register + * @ab8500: device to write to + * @addr: address of the register + * @data: value to write + */ +int ab8500_write(struct ab8500 *ab8500, u16 addr, u8 data) +{ + int ret; + + mutex_lock(&ab8500->lock); + ret = __ab8500_write(ab8500, addr, data); + mutex_unlock(&ab8500->lock); + + return ret; +} +EXPORT_SYMBOL_GPL(ab8500_write); + +static int __ab8500_read(struct ab8500 *ab8500, u16 addr) +{ + int ret; + + ret = ab8500->read(ab8500, addr); + if (ret < 0) + dev_err(ab8500->dev, "failed to read reg %#x: %d\n", + addr, ret); + + dev_vdbg(ab8500->dev, "rd: addr %#x => data %#x\n", addr, ret); + + return ret; +} + +/** + * ab8500_read() - read an AB8500 register + * @ab8500: device to read from + * @addr: address of the register + */ +int ab8500_read(struct ab8500 *ab8500, u16 addr) +{ + int ret; + + mutex_lock(&ab8500->lock); + ret = __ab8500_read(ab8500, addr); + mutex_unlock(&ab8500->lock); + + return ret; +} +EXPORT_SYMBOL_GPL(ab8500_read); + +/** + * ab8500_set_bits() - set a bitfield in an AB8500 register + * @ab8500: device to read from + * @addr: address of the register + * @mask: mask of the bitfield to modify + * @data: value to set to the bitfield + */ +int ab8500_set_bits(struct ab8500 *ab8500, u16 addr, u8 mask, u8 data) +{ + int ret; + + mutex_lock(&ab8500->lock); + + ret = __ab8500_read(ab8500, addr); + if (ret < 0) + goto out; + + ret &= ~mask; + ret |= data; + + ret = __ab8500_write(ab8500, addr, ret); + +out: + mutex_unlock(&ab8500->lock); + return ret; +} +EXPORT_SYMBOL_GPL(ab8500_set_bits); + +static void ab8500_irq_lock(unsigned int irq) +{ + struct ab8500 *ab8500 = get_irq_chip_data(irq); + + mutex_lock(&ab8500->irq_lock); +} + +static void ab8500_irq_sync_unlock(unsigned int irq) +{ + struct ab8500 *ab8500 = get_irq_chip_data(irq); + int i; + + for (i = 0; i < AB8500_NUM_IRQ_REGS; i++) { + u8 old = ab8500->oldmask[i]; + u8 new = ab8500->mask[i]; + int reg; + + if (new == old) + continue; + + ab8500->oldmask[i] = new; + + reg = AB8500_IT_MASK1_REG + ab8500_irq_regoffset[i]; + ab8500_write(ab8500, reg, new); + } + + mutex_unlock(&ab8500->irq_lock); +} + +static void ab8500_irq_mask(unsigned int irq) +{ + struct ab8500 *ab8500 = get_irq_chip_data(irq); + int offset = irq - ab8500->irq_base; + int index = offset / 8; + int mask = 1 << (offset % 8); + + ab8500->mask[index] |= mask; +} + +static void ab8500_irq_unmask(unsigned int irq) +{ + struct ab8500 *ab8500 = get_irq_chip_data(irq); + int offset = irq - ab8500->irq_base; + int index = offset / 8; + int mask = 1 << (offset % 8); + + ab8500->mask[index] &= ~mask; +} + +static struct irq_chip ab8500_irq_chip = { + .name = "ab8500", + .bus_lock = ab8500_irq_lock, + .bus_sync_unlock = ab8500_irq_sync_unlock, + .mask = ab8500_irq_mask, + .unmask = ab8500_irq_unmask, +}; + +static irqreturn_t ab8500_irq(int irq, void *dev) +{ + struct ab8500 *ab8500 = dev; + int i; + + dev_vdbg(ab8500->dev, "interrupt\n"); + + for (i = 0; i < AB8500_NUM_IRQ_REGS; i++) { + int regoffset = ab8500_irq_regoffset[i]; + int status; + + status = ab8500_read(ab8500, AB8500_IT_LATCH1_REG + regoffset); + if (status <= 0) + continue; + + do { + int bit = __ffs(status); + int line = i * 8 + bit; + + handle_nested_irq(ab8500->irq_base + line); + status &= ~(1 << bit); + } while (status); + } + + return IRQ_HANDLED; +} + +static int ab8500_irq_init(struct ab8500 *ab8500) +{ + int base = ab8500->irq_base; + int irq; + + for (irq = base; irq < base + AB8500_NR_IRQS; irq++) { + set_irq_chip_data(irq, ab8500); + set_irq_chip_and_handler(irq, &ab8500_irq_chip, + handle_simple_irq); + set_irq_nested_thread(irq, 1); +#ifdef CONFIG_ARM + set_irq_flags(irq, IRQF_VALID); +#else + set_irq_noprobe(irq); +#endif + } + + return 0; +} + +static void ab8500_irq_remove(struct ab8500 *ab8500) +{ + int base = ab8500->irq_base; + int irq; + + for (irq = base; irq < base + AB8500_NR_IRQS; irq++) { +#ifdef CONFIG_ARM + set_irq_flags(irq, 0); +#endif + set_irq_chip_and_handler(irq, NULL, NULL); + set_irq_chip_data(irq, NULL); + } +} + +static struct resource ab8500_gpadc_resources[] = { + { + .name = "HW_CONV_END", + .start = AB8500_INT_GP_HW_ADC_CONV_END, + .end = AB8500_INT_GP_HW_ADC_CONV_END, + .flags = IORESOURCE_IRQ, + }, + { + .name = "SW_CONV_END", + .start = AB8500_INT_GP_SW_ADC_CONV_END, + .end = AB8500_INT_GP_SW_ADC_CONV_END, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct resource ab8500_rtc_resources[] = { + { + .name = "60S", + .start = AB8500_INT_RTC_60S, + .end = AB8500_INT_RTC_60S, + .flags = IORESOURCE_IRQ, + }, + { + .name = "ALARM", + .start = AB8500_INT_RTC_ALARM, + .end = AB8500_INT_RTC_ALARM, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct mfd_cell ab8500_devs[] = { + { + .name = "ab8500-gpadc", + .num_resources = ARRAY_SIZE(ab8500_gpadc_resources), + .resources = ab8500_gpadc_resources, + }, + { + .name = "ab8500-rtc", + .num_resources = ARRAY_SIZE(ab8500_rtc_resources), + .resources = ab8500_rtc_resources, + }, + { .name = "ab8500-charger", }, + { .name = "ab8500-audio", }, + { .name = "ab8500-usb", }, + { .name = "ab8500-pwm", }, +}; + +int __devinit ab8500_init(struct ab8500 *ab8500) +{ + struct ab8500_platform_data *plat = dev_get_platdata(ab8500->dev); + int ret; + int i; + + if (plat) + ab8500->irq_base = plat->irq_base; + + mutex_init(&ab8500->lock); + mutex_init(&ab8500->irq_lock); + + ret = ab8500_read(ab8500, AB8500_REV_REG); + if (ret < 0) + return ret; + + /* + * 0x0 - Early Drop + * 0x10 - Cut 1.0 + * 0x11 - Cut 1.1 + */ + if (ret == 0x0 || ret == 0x10 || ret == 0x11) { + ab8500->revision = ret; + dev_info(ab8500->dev, "detected chip, revision: %#x\n", ret); + } else { + dev_err(ab8500->dev, "unknown chip, revision: %#x\n", ret); + return -EINVAL; + } + + if (plat && plat->init) + plat->init(ab8500); + + /* Clear and mask all interrupts */ + for (i = 0; i < 10; i++) { + ab8500_read(ab8500, AB8500_IT_LATCH1_REG + i); + ab8500_write(ab8500, AB8500_IT_MASK1_REG + i, 0xff); + } + + for (i = 18; i < 24; i++) { + ab8500_read(ab8500, AB8500_IT_LATCH1_REG + i); + ab8500_write(ab8500, AB8500_IT_MASK1_REG + i, 0xff); + } + + for (i = 0; i < AB8500_NUM_IRQ_REGS; i++) + ab8500->mask[i] = ab8500->oldmask[i] = 0xff; + + if (ab8500->irq_base) { + ret = ab8500_irq_init(ab8500); + if (ret) + return ret; + + ret = request_threaded_irq(ab8500->irq, NULL, ab8500_irq, + IRQF_ONESHOT, "ab8500", ab8500); + if (ret) + goto out_removeirq; + } + + ret = mfd_add_devices(ab8500->dev, -1, ab8500_devs, + ARRAY_SIZE(ab8500_devs), NULL, + ab8500->irq_base); + if (ret) + goto out_freeirq; + + return ret; + +out_freeirq: + if (ab8500->irq_base) { + free_irq(ab8500->irq, ab8500); +out_removeirq: + ab8500_irq_remove(ab8500); + } + return ret; +} + +int __devexit ab8500_exit(struct ab8500 *ab8500) +{ + mfd_remove_devices(ab8500->dev); + if (ab8500->irq_base) { + free_irq(ab8500->irq, ab8500); + ab8500_irq_remove(ab8500); + } + + return 0; +} + +MODULE_AUTHOR("Srinidhi Kasagar, Rabin Vincent"); +MODULE_DESCRIPTION("AB8500 MFD core"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/mfd/ab8500-spi.c b/drivers/mfd/ab8500-spi.c new file mode 100644 index 0000000..b81d4f7 --- /dev/null +++ b/drivers/mfd/ab8500-spi.c @@ -0,0 +1,133 @@ +/* + * Copyright (C) ST-Ericsson SA 2010 + * + * License Terms: GNU General Public License v2 + * Author: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> + */ + +#include <linux/kernel.h> +#include <linux/slab.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/spi/spi.h> +#include <linux/mfd/ab8500.h> + +/* + * This funtion writes to any AB8500 registers using + * SPI protocol & before it writes it packs the data + * in the below 24 bit frame format + * + * *|------------------------------------| + * *| 23|22...18|17.......10|9|8|7......0| + * *| r/w bank adr data | + * * ------------------------------------ + * + * This function shouldn't be called from interrupt + * context + */ +static int ab8500_spi_write(struct ab8500 *ab8500, u16 addr, u8 data) +{ + struct spi_device *spi = container_of(ab8500->dev, struct spi_device, + dev); + unsigned long spi_data = addr << 10 | data; + struct spi_transfer xfer; + struct spi_message msg; + + ab8500->tx_buf[0] = spi_data; + ab8500->rx_buf[0] = 0; + + xfer.tx_buf = ab8500->tx_buf; + xfer.rx_buf = NULL; + xfer.len = sizeof(unsigned long); + + spi_message_init(&msg); + spi_message_add_tail(&xfer, &msg); + + return spi_sync(spi, &msg); +} + +static int ab8500_spi_read(struct ab8500 *ab8500, u16 addr) +{ + struct spi_device *spi = container_of(ab8500->dev, struct spi_device, + dev); + unsigned long spi_data = 1 << 23 | addr << 10; + struct spi_transfer xfer; + struct spi_message msg; + int ret; + + ab8500->tx_buf[0] = spi_data; + ab8500->rx_buf[0] = 0; + + xfer.tx_buf = ab8500->tx_buf; + xfer.rx_buf = ab8500->rx_buf; + xfer.len = sizeof(unsigned long); + + spi_message_init(&msg); + spi_message_add_tail(&xfer, &msg); + + ret = spi_sync(spi, &msg); + if (!ret) + ret = ab8500->rx_buf[0]; + + return ret; +} + +static int __devinit ab8500_spi_probe(struct spi_device *spi) +{ + struct ab8500 *ab8500; + int ret; + + ab8500 = kzalloc(sizeof *ab8500, GFP_KERNEL); + if (!ab8500) + return -ENOMEM; + + ab8500->dev = &spi->dev; + ab8500->irq = spi->irq; + + ab8500->read = ab8500_spi_read; + ab8500->write = ab8500_spi_write; + + spi_set_drvdata(spi, ab8500); + + ret = ab8500_init(ab8500); + if (ret) + kfree(ab8500); + + return ret; +} + +static int __devexit ab8500_spi_remove(struct spi_device *spi) +{ + struct ab8500 *ab8500 = spi_get_drvdata(spi); + + ab8500_exit(ab8500); + kfree(ab8500); + + return 0; +} + +static struct spi_driver ab8500_spi_driver = { + .driver = { + .name = "ab8500", + .owner = THIS_MODULE, + }, + .probe = ab8500_spi_probe, + .remove = __devexit_p(ab8500_spi_remove) +}; + +static int __init ab8500_spi_init(void) +{ + return spi_register_driver(&ab8500_spi_driver); +} +subsys_initcall(ab8500_spi_init); + +static void __exit ab8500_spi_exit(void) +{ + spi_unregister_driver(&ab8500_spi_driver); +} +module_exit(ab8500_spi_exit); + +MODULE_AUTHOR("Srinidhi KASAGAR <srinidhi.kasagar@stericsson.com"); +MODULE_DESCRIPTION("AB8500 SPI"); +MODULE_LICENSE("GPL v2"); diff --git a/include/linux/mfd/ab4500.h b/include/linux/mfd/ab4500.h deleted file mode 100644 index a42a703..0000000 --- a/include/linux/mfd/ab4500.h +++ /dev/null @@ -1,262 +0,0 @@ -/* - * Copyright (C) 2009 ST-Ericsson - * - * Author: Srinidhi KASAGAR <srinidhi.kasagar@stericsson.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. - * - * AB4500 device core funtions, for client access - */ -#ifndef MFD_AB4500_H -#define MFD_AB4500_H - -#include <linux/device.h> - -/* - * AB4500 bank addresses - */ -#define AB4500_SYS_CTRL1_BLOCK 0x1 -#define AB4500_SYS_CTRL2_BLOCK 0x2 -#define AB4500_REGU_CTRL1 0x3 -#define AB4500_REGU_CTRL2 0x4 -#define AB4500_USB 0x5 -#define AB4500_TVOUT 0x6 -#define AB4500_DBI 0x7 -#define AB4500_ECI_AV_ACC 0x8 -#define AB4500_RESERVED 0x9 -#define AB4500_GPADC 0xA -#define AB4500_CHARGER 0xB -#define AB4500_GAS_GAUGE 0xC -#define AB4500_AUDIO 0xD -#define AB4500_INTERRUPT 0xE -#define AB4500_RTC 0xF -#define AB4500_MISC 0x10 -#define AB4500_DEBUG 0x12 -#define AB4500_PROD_TEST 0x13 -#define AB4500_OTP_EMUL 0x15 - -/* - * System control 1 register offsets. - * Bank = 0x01 - */ -#define AB4500_TURNON_STAT_REG 0x0100 -#define AB4500_RESET_STAT_REG 0x0101 -#define AB4500_PONKEY1_PRESS_STAT_REG 0x0102 - -#define AB4500_FSM_STAT1_REG 0x0140 -#define AB4500_FSM_STAT2_REG 0x0141 -#define AB4500_SYSCLK_REQ_STAT_REG 0x0142 -#define AB4500_USB_STAT1_REG 0x0143 -#define AB4500_USB_STAT2_REG 0x0144 -#define AB4500_STATUS_SPARE1_REG 0x0145 -#define AB4500_STATUS_SPARE2_REG 0x0146 - -#define AB4500_CTRL1_REG 0x0180 -#define AB4500_CTRL2_REG 0x0181 - -/* - * System control 2 register offsets. - * bank = 0x02 - */ -#define AB4500_CTRL3_REG 0x0200 -#define AB4500_MAIN_WDOG_CTRL_REG 0x0201 -#define AB4500_MAIN_WDOG_TIMER_REG 0x0202 -#define AB4500_LOW_BAT_REG 0x0203 -#define AB4500_BATT_OK_REG 0x0204 -#define AB4500_SYSCLK_TIMER_REG 0x0205 -#define AB4500_SMPSCLK_CTRL_REG 0x0206 -#define AB4500_SMPSCLK_SEL1_REG 0x0207 -#define AB4500_SMPSCLK_SEL2_REG 0x0208 -#define AB4500_SMPSCLK_SEL3_REG 0x0209 -#define AB4500_SYSULPCLK_CONF_REG 0x020A -#define AB4500_SYSULPCLK_CTRL1_REG 0x020B -#define AB4500_SYSCLK_CTRL_REG 0x020C -#define AB4500_SYSCLK_REQ1_VALID_REG 0x020D -#define AB4500_SYSCLK_REQ_VALID_REG 0x020E -#define AB4500_SYSCTRL_SPARE_REG 0x020F -#define AB4500_PAD_CONF_REG 0x0210 - -/* - * Regu control1 register offsets - * Bank = 0x03 - */ -#define AB4500_REGU_SERIAL_CTRL1_REG 0x0300 -#define AB4500_REGU_SERIAL_CTRL2_REG 0x0301 -#define AB4500_REGU_SERIAL_CTRL3_REG 0x0302 -#define AB4500_REGU_REQ_CTRL1_REG 0x0303 -#define AB4500_REGU_REQ_CTRL2_REG 0x0304 -#define AB4500_REGU_REQ_CTRL3_REG 0x0305 -#define AB4500_REGU_REQ_CTRL4_REG 0x0306 -#define AB4500_REGU_MISC1_REG 0x0380 -#define AB4500_REGU_OTGSUPPLY_CTRL_REG 0x0381 -#define AB4500_REGU_VUSB_CTRL_REG 0x0382 -#define AB4500_REGU_VAUDIO_SUPPLY_REG 0x0383 -#define AB4500_REGU_CTRL1_SPARE_REG 0x0384 - -/* - * Regu control2 Vmod register offsets - */ -#define AB4500_REGU_VMOD_REGU_REG 0x0440 -#define AB4500_REGU_VMOD_SEL1_REG 0x0441 -#define AB4500_REGU_VMOD_SEL2_REG 0x0442 -#define AB4500_REGU_CTRL_DISCH_REG 0x0443 -#define AB4500_REGU_CTRL_DISCH2_REG 0x0444 - -/* - * USB/ULPI register offsets - * Bank : 0x5 - */ -#define AB4500_USB_LINE_STAT_REG 0x0580 -#define AB4500_USB_LINE_CTRL1_REG 0x0581 -#define AB4500_USB_LINE_CTRL2_REG 0x0582 -#define AB4500_USB_LINE_CTRL3_REG 0x0583 -#define AB4500_USB_LINE_CTRL4_REG 0x0584 -#define AB4500_USB_LINE_CTRL5_REG 0x0585 -#define AB4500_USB_OTG_CTRL_REG 0x0587 -#define AB4500_USB_OTG_STAT_REG 0x0588 -#define AB4500_USB_OTG_STAT_REG 0x0588 -#define AB4500_USB_CTRL_SPARE_REG 0x0589 -#define AB4500_USB_PHY_CTRL_REG 0x058A - -/* - * TVOUT / CTRL register offsets - * Bank : 0x06 - */ -#define AB4500_TVOUT_CTRL_REG 0x0680 - -/* - * DBI register offsets - * Bank : 0x07 - */ -#define AB4500_DBI_REG1_REG 0x0700 -#define AB4500_DBI_REG2_REG 0x0701 - -/* - * ECI regsiter offsets - * Bank : 0x08 - */ -#define AB4500_ECI_CTRL_REG 0x0800 -#define AB4500_ECI_HOOKLEVEL_REG 0x0801 -#define AB4500_ECI_DATAOUT_REG 0x0802 -#define AB4500_ECI_DATAIN_REG 0x0803 - -/* - * AV Connector register offsets - * Bank : 0x08 - */ -#define AB4500_AV_CONN_REG 0x0840 - -/* - * Accessory detection register offsets - * Bank : 0x08 - */ -#define AB4500_ACC_DET_DB1_REG 0x0880 -#define AB4500_ACC_DET_DB2_REG 0x0881 - -/* - * GPADC register offsets - * Bank : 0x0A - */ -#define AB4500_GPADC_CTRL1_REG 0x0A00 -#define AB4500_GPADC_CTRL2_REG 0x0A01 -#define AB4500_GPADC_CTRL3_REG 0x0A02 -#define AB4500_GPADC_AUTO_TIMER_REG 0x0A03 -#define AB4500_GPADC_STAT_REG 0x0A04 -#define AB4500_GPADC_MANDATAL_REG 0x0A05 -#define AB4500_GPADC_MANDATAH_REG 0x0A06 -#define AB4500_GPADC_AUTODATAL_REG 0x0A07 -#define AB4500_GPADC_AUTODATAH_REG 0x0A08 -#define AB4500_GPADC_MUX_CTRL_REG 0x0A09 - -/* - * Charger / status register offfsets - * Bank : 0x0B - */ -#define AB4500_CH_STATUS1_REG 0x0B00 -#define AB4500_CH_STATUS2_REG 0x0B01 -#define AB4500_CH_USBCH_STAT1_REG 0x0B02 -#define AB4500_CH_USBCH_STAT2_REG 0x0B03 -#define AB4500_CH_FSM_STAT_REG 0x0B04 -#define AB4500_CH_STAT_REG 0x0B05 - -/* - * Charger / control register offfsets - * Bank : 0x0B - */ -#define AB4500_CH_VOLT_LVL_REG 0x0B40 - -/* - * Charger / main control register offfsets - * Bank : 0x0B - */ -#define AB4500_MCH_CTRL1 0x0B80 -#define AB4500_MCH_CTRL2 0x0B81 -#define AB4500_MCH_IPT_CURLVL_REG 0x0B82 -#define AB4500_CH_WD_REG 0x0B83 - -/* - * Charger / USB control register offsets - * Bank : 0x0B - */ -#define AB4500_USBCH_CTRL1_REG 0x0BC0 -#define AB4500_USBCH_CTRL2_REG 0x0BC1 -#define AB4500_USBCH_IPT_CRNTLVL_REG 0x0BC2 - -/* - * RTC bank register offsets - * Bank : 0xF - */ -#define AB4500_RTC_SOFF_STAT_REG 0x0F00 -#define AB4500_RTC_CC_CONF_REG 0x0F01 -#define AB4500_RTC_READ_REQ_REG 0x0F02 -#define AB4500_RTC_WATCH_TSECMID_REG 0x0F03 -#define AB4500_RTC_WATCH_TSECHI_REG 0x0F04 -#define AB4500_RTC_WATCH_TMIN_LOW_REG 0x0F05 -#define AB4500_RTC_WATCH_TMIN_MID_REG 0x0F06 -#define AB4500_RTC_WATCH_TMIN_HI_REG 0x0F07 -#define AB4500_RTC_ALRM_MIN_LOW_REG 0x0F08 -#define AB4500_RTC_ALRM_MIN_MID_REG 0x0F09 -#define AB4500_RTC_ALRM_MIN_HI_REG 0x0F0A -#define AB4500_RTC_STAT_REG 0x0F0B -#define AB4500_RTC_BKUP_CHG_REG 0x0F0C -#define AB4500_RTC_FORCE_BKUP_REG 0x0F0D -#define AB4500_RTC_CALIB_REG 0x0F0E -#define AB4500_RTC_SWITCH_STAT_REG 0x0F0F - -/* - * PWM Out generators - * Bank: 0x10 - */ -#define AB4500_PWM_OUT_CTRL1_REG 0x1060 -#define AB4500_PWM_OUT_CTRL2_REG 0x1061 -#define AB4500_PWM_OUT_CTRL3_REG 0x1062 -#define AB4500_PWM_OUT_CTRL4_REG 0x1063 -#define AB4500_PWM_OUT_CTRL5_REG 0x1064 -#define AB4500_PWM_OUT_CTRL6_REG 0x1065 -#define AB4500_PWM_OUT_CTRL7_REG 0x1066 - -#define AB4500_I2C_PAD_CTRL_REG 0x1067 -#define AB4500_REV_REG 0x1080 - -/** - * struct ab4500 - * @spi: spi device structure - * @tx_buf: transmit buffer - * @rx_buf: receive buffer - * @lock: sync primitive - */ -struct ab4500 { - struct spi_device *spi; - unsigned long tx_buf[4]; - unsigned long rx_buf[4]; - struct mutex lock; -}; - -int ab4500_write(struct ab4500 *ab4500, unsigned char block, - unsigned long addr, unsigned char data); -int ab4500_read(struct ab4500 *ab4500, unsigned char block, - unsigned long addr); - -#endif /* MFD_AB4500_H */ diff --git a/include/linux/mfd/ab8500.h b/include/linux/mfd/ab8500.h new file mode 100644 index 0000000..b63ff3b --- /dev/null +++ b/include/linux/mfd/ab8500.h @@ -0,0 +1,128 @@ +/* + * Copyright (C) ST-Ericsson SA 2010 + * + * License Terms: GNU General Public License v2 + * Author: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> + */ +#ifndef MFD_AB8500_H +#define MFD_AB8500_H + +#include <linux/device.h> + +/* + * Interrupts + */ + +#define AB8500_INT_MAIN_EXT_CH_NOT_OK 0 +#define AB8500_INT_UN_PLUG_TV_DET 1 +#define AB8500_INT_PLUG_TV_DET 2 +#define AB8500_INT_TEMP_WARM 3 +#define AB8500_INT_PON_KEY2DB_F 4 +#define AB8500_INT_PON_KEY2DB_R 5 +#define AB8500_INT_PON_KEY1DB_F 6 +#define AB8500_INT_PON_KEY1DB_R 7 +#define AB8500_INT_BATT_OVV 8 +#define AB8500_INT_MAIN_CH_UNPLUG_DET 10 +#define AB8500_INT_MAIN_CH_PLUG_DET 11 +#define AB8500_INT_USB_ID_DET_F 12 +#define AB8500_INT_USB_ID_DET_R 13 +#define AB8500_INT_VBUS_DET_F 14 +#define AB8500_INT_VBUS_DET_R 15 +#define AB8500_INT_VBUS_CH_DROP_END 16 +#define AB8500_INT_RTC_60S 17 +#define AB8500_INT_RTC_ALARM 18 +#define AB8500_INT_BAT_CTRL_INDB 20 +#define AB8500_INT_CH_WD_EXP 21 +#define AB8500_INT_VBUS_OVV 22 +#define AB8500_INT_MAIN_CH_DROP_END 23 +#define AB8500_INT_CCN_CONV_ACC 24 +#define AB8500_INT_INT_AUD 25 +#define AB8500_INT_CCEOC 26 +#define AB8500_INT_CC_INT_CALIB 27 +#define AB8500_INT_LOW_BAT_F 28 +#define AB8500_INT_LOW_BAT_R 29 +#define AB8500_INT_BUP_CHG_NOT_OK 30 +#define AB8500_INT_BUP_CHG_OK 31 +#define AB8500_INT_GP_HW_ADC_CONV_END 32 +#define AB8500_INT_ACC_DETECT_1DB_F 33 +#define AB8500_INT_ACC_DETECT_1DB_R 34 +#define AB8500_INT_ACC_DETECT_22DB_F 35 +#define AB8500_INT_ACC_DETECT_22DB_R 36 +#define AB8500_INT_ACC_DETECT_21DB_F 37 +#define AB8500_INT_ACC_DETECT_21DB_R 38 +#define AB8500_INT_GP_SW_ADC_CONV_END 39 +#define AB8500_INT_BTEMP_LOW 72 +#define AB8500_INT_BTEMP_LOW_MEDIUM 73 +#define AB8500_INT_BTEMP_MEDIUM_HIGH 74 +#define AB8500_INT_BTEMP_HIGH 75 +#define AB8500_INT_USB_CHARGER_NOT_OK 81 +#define AB8500_INT_ID_WAKEUP_R 82 +#define AB8500_INT_ID_DET_R1R 84 +#define AB8500_INT_ID_DET_R2R 85 +#define AB8500_INT_ID_DET_R3R 86 +#define AB8500_INT_ID_DET_R4R 87 +#define AB8500_INT_ID_WAKEUP_F 88 +#define AB8500_INT_ID_DET_R1F 90 +#define AB8500_INT_ID_DET_R2F 91 +#define AB8500_INT_ID_DET_R3F 92 +#define AB8500_INT_ID_DET_R4F 93 +#define AB8500_INT_USB_CHG_DET_DONE 94 +#define AB8500_INT_USB_CH_TH_PROT_F 96 +#define AB8500_INT_USB_CH_TH_PROP_R 97 +#define AB8500_INT_MAIN_CH_TH_PROP_F 98 +#define AB8500_INT_MAIN_CH_TH_PROT_R 99 +#define AB8500_INT_USB_CHARGER_NOT_OKF 103 + +#define AB8500_NR_IRQS 104 +#define AB8500_NUM_IRQ_REGS 13 + +/** + * struct ab8500 - ab8500 internal structure + * @dev: parent device + * @lock: read/write operations lock + * @irq_lock: genirq bus lock + * @revision: chip revision + * @irq: irq line + * @write: register write + * @read: register read + * @rx_buf: rx buf for SPI + * @tx_buf: tx buf for SPI + * @mask: cache of IRQ regs for bus lock + * @oldmask: cache of previous IRQ regs for bus lock + */ +struct ab8500 { + struct device *dev; + struct mutex lock; + struct mutex irq_lock; + int revision; + int irq_base; + int irq; + + int (*write) (struct ab8500 *a8500, u16 addr, u8 data); + int (*read) (struct ab8500 *a8500, u16 addr); + + unsigned long tx_buf[4]; + unsigned long rx_buf[4]; + + u8 mask[AB8500_NUM_IRQ_REGS]; + u8 oldmask[AB8500_NUM_IRQ_REGS]; +}; + +/** + * struct ab8500_platform_data - AB8500 platform data + * @irq_base: start of AB8500 IRQs, AB8500_NR_IRQS will be used + * @init: board-specific initialization after detection of ab8500 + */ +struct ab8500_platform_data { + int irq_base; + void (*init) (struct ab8500 *); +}; + +extern int ab8500_write(struct ab8500 *a8500, u16 addr, u8 data); +extern int ab8500_read(struct ab8500 *a8500, u16 addr); +extern int ab8500_set_bits(struct ab8500 *a8500, u16 addr, u8 mask, u8 data); + +extern int __devinit ab8500_init(struct ab8500 *ab8500); +extern int __devexit ab8500_exit(struct ab8500 *ab8500); + +#endif /* MFD_AB8500_H */ |
