diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/plat-s3c/Kconfig | 6 | ||||
| -rw-r--r-- | arch/arm/plat-s5pc1xx/Kconfig | 3 | ||||
| -rw-r--r-- | arch/arm/plat-s5pc1xx/Makefile | 4 | ||||
| -rw-r--r-- | arch/arm/plat-s5pc1xx/cpu.c | 5 | ||||
| -rw-r--r-- | arch/arm/plat-s5pc1xx/gpio-config.c | 62 | ||||
| -rw-r--r-- | arch/arm/plat-s5pc1xx/gpiolib.c | 503 | ||||
| -rw-r--r-- | arch/arm/plat-s5pc1xx/include/plat/gpio-cfg-s5pc1xx.h | 32 | ||||
| -rw-r--r-- | arch/arm/plat-s5pc1xx/include/plat/gpio-ext.h | 44 | ||||
| -rw-r--r-- | arch/arm/plat-s5pc1xx/include/plat/irqs.h | 15 | ||||
| -rw-r--r-- | arch/arm/plat-s5pc1xx/include/plat/regs-gpio.h | 70 | ||||
| -rw-r--r-- | arch/arm/plat-s5pc1xx/irq-eint.c | 281 | ||||
| -rw-r--r-- | arch/arm/plat-s5pc1xx/irq-gpio.c | 266 | ||||
| -rw-r--r-- | arch/arm/plat-s5pc1xx/irq.c | 2 |
13 files changed, 1288 insertions, 5 deletions
diff --git a/arch/arm/plat-s3c/Kconfig b/arch/arm/plat-s3c/Kconfig index 8931c5f..f155a84 100644 --- a/arch/arm/plat-s3c/Kconfig +++ b/arch/arm/plat-s3c/Kconfig @@ -159,6 +159,12 @@ config S3C_GPIO_CFG_S3C64XX Internal configuration to enable S3C64XX style GPIO configuration functions. +config S5P_GPIO_CFG_S5PC1XX + bool + help + Internal configuration to enable S5PC1XX style GPIO configuration + functions. + # DMA config S3C_DMA diff --git a/arch/arm/plat-s5pc1xx/Kconfig b/arch/arm/plat-s5pc1xx/Kconfig index a8a711c..86edd27 100644 --- a/arch/arm/plat-s5pc1xx/Kconfig +++ b/arch/arm/plat-s5pc1xx/Kconfig @@ -15,6 +15,9 @@ config PLAT_S5PC1XX select ARCH_REQUIRE_GPIOLIB select S3C_GPIO_TRACK select S3C_GPIO_PULL_UPDOWN + select S3C_GPIO_CFG_S3C24XX + select S3C_GPIO_CFG_S3C64XX + select S5P_GPIO_CFG_S5PC1XX help Base platform code for any Samsung S5PC1XX device diff --git a/arch/arm/plat-s5pc1xx/Makefile b/arch/arm/plat-s5pc1xx/Makefile index ebbf364..e860813 100644 --- a/arch/arm/plat-s5pc1xx/Makefile +++ b/arch/arm/plat-s5pc1xx/Makefile @@ -13,8 +13,9 @@ obj- := obj-y += dev-uart.o obj-y += cpu.o -obj-y += irq.o +obj-y += irq.o irq-gpio.o irq-eint.o obj-y += clock.o +obj-y += gpiolib.o # CPU support @@ -23,5 +24,6 @@ obj-$(CONFIG_CPU_S5PC100_CLOCK) += s5pc100-clock.o # Device setup +obj-$(CONFIG_S5P_GPIO_CFG_S5PC1XX) += gpio-config.o obj-$(CONFIG_S5PC100_SETUP_I2C0) += setup-i2c0.o obj-$(CONFIG_S5PC100_SETUP_I2C1) += setup-i2c1.o diff --git a/arch/arm/plat-s5pc1xx/cpu.c b/arch/arm/plat-s5pc1xx/cpu.c index e8f3472..02baeaa 100644 --- a/arch/arm/plat-s5pc1xx/cpu.c +++ b/arch/arm/plat-s5pc1xx/cpu.c @@ -60,6 +60,11 @@ static struct map_desc s5pc1xx_iodesc[] __initdata = { .length = SZ_4K, .type = MT_DEVICE, }, { + .virtual = (unsigned long)S5PC1XX_VA_GPIO, + .pfn = __phys_to_pfn(S5PC100_PA_GPIO), + .length = SZ_4K, + .type = MT_DEVICE, + }, { .virtual = (unsigned long)S5PC1XX_VA_CHIPID, .pfn = __phys_to_pfn(S5PC1XX_PA_CHIPID), .length = SZ_16, diff --git a/arch/arm/plat-s5pc1xx/gpio-config.c b/arch/arm/plat-s5pc1xx/gpio-config.c new file mode 100644 index 0000000..bba675d --- /dev/null +++ b/arch/arm/plat-s5pc1xx/gpio-config.c @@ -0,0 +1,62 @@ +/* linux/arch/arm/plat-s5pc1xx/gpio-config.c + * + * Copyright 2009 Samsung Electronics + * + * S5PC1XX GPIO Configuration. + * + * Based on plat-s3c64xx/gpio-config.c + * + * 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/kernel.h> +#include <linux/module.h> +#include <linux/gpio.h> +#include <linux/io.h> + +#include <mach/gpio-core.h> +#include <plat/gpio-cfg-s5pc1xx.h> + +s5p_gpio_drvstr_t s5p_gpio_get_drvstr(unsigned int pin, unsigned int off) +{ + struct s3c_gpio_chip *chip = s3c_gpiolib_getchip(pin); + void __iomem *reg; + int shift = off * 2; + u32 drvstr; + + if (!chip) + return -EINVAL; + + reg = chip->base + 0x0C; + + drvstr = __raw_readl(reg); + drvstr = 0xffff & (0x3 << shift); + drvstr = drvstr >> shift; + + return (__force s5p_gpio_drvstr_t)drvstr; +} +EXPORT_SYMBOL(s5p_gpio_get_drvstr); + +int s5p_gpio_set_drvstr(unsigned int pin, unsigned int off, + s5p_gpio_drvstr_t drvstr) +{ + struct s3c_gpio_chip *chip = s3c_gpiolib_getchip(pin); + void __iomem *reg; + int shift = off * 2; + u32 tmp; + + if (!chip) + return -EINVAL; + + reg = chip->base + 0x0C; + + tmp = __raw_readl(reg); + tmp |= drvstr << shift; + + __raw_writel(tmp, reg); + + return 0; +} +EXPORT_SYMBOL(s5p_gpio_set_drvstr); diff --git a/arch/arm/plat-s5pc1xx/gpiolib.c b/arch/arm/plat-s5pc1xx/gpiolib.c new file mode 100644 index 0000000..facb410 --- /dev/null +++ b/arch/arm/plat-s5pc1xx/gpiolib.c @@ -0,0 +1,503 @@ +/* + * arch/arm/plat-s5pc1xx/gpiolib.c + * + * Copyright 2009 Samsung Electronics Co + * Kyungmin Park <kyungmin.park@samsung.com> + * + * S5PC1XX - GPIOlib support + * + * 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/kernel.h> +#include <linux/irq.h> +#include <linux/io.h> +#include <linux/gpio.h> + +#include <mach/map.h> +#include <mach/gpio-core.h> + +#include <plat/gpio-cfg.h> +#include <plat/gpio-cfg-helpers.h> +#include <plat/regs-gpio.h> + +/* S5PC100 GPIO bank summary: + * + * Bank GPIOs Style INT Type + * A0 8 4Bit GPIO_INT0 + * A1 5 4Bit GPIO_INT1 + * B 8 4Bit GPIO_INT2 + * C 5 4Bit GPIO_INT3 + * D 7 4Bit GPIO_INT4 + * E0 8 4Bit GPIO_INT5 + * E1 6 4Bit GPIO_INT6 + * F0 8 4Bit GPIO_INT7 + * F1 8 4Bit GPIO_INT8 + * F2 8 4Bit GPIO_INT9 + * F3 4 4Bit GPIO_INT10 + * G0 8 4Bit GPIO_INT11 + * G1 3 4Bit GPIO_INT12 + * G2 7 4Bit GPIO_INT13 + * G3 7 4Bit GPIO_INT14 + * H0 8 4Bit WKUP_INT + * H1 8 4Bit WKUP_INT + * H2 8 4Bit WKUP_INT + * H3 8 4Bit WKUP_INT + * I 8 4Bit GPIO_INT15 + * J0 8 4Bit GPIO_INT16 + * J1 5 4Bit GPIO_INT17 + * J2 8 4Bit GPIO_INT18 + * J3 8 4Bit GPIO_INT19 + * J4 4 4Bit GPIO_INT20 + * K0 8 4Bit None + * K1 6 4Bit None + * K2 8 4Bit None + * K3 8 4Bit None + * L0 8 4Bit None + * L1 8 4Bit None + * L2 8 4Bit None + * L3 8 4Bit None + */ + +#define OFF_GPCON (0x00) +#define OFF_GPDAT (0x04) + +#define con_4bit_shift(__off) ((__off) * 4) + +#if 1 +#define gpio_dbg(x...) do { } while (0) +#else +#define gpio_dbg(x...) printk(KERN_DEBUG x) +#endif + +/* The s5pc1xx_gpiolib routines are to control the gpio banks where + * the gpio configuration register (GPxCON) has 4 bits per GPIO, as the + * following example: + * + * base + 0x00: Control register, 4 bits per gpio + * gpio n: 4 bits starting at (4*n) + * 0000 = input, 0001 = output, others mean special-function + * base + 0x04: Data register, 1 bit per gpio + * bit n: data bit n + * + * Note, since the data register is one bit per gpio and is at base + 0x4 + * we can use s3c_gpiolib_get and s3c_gpiolib_set to change the state of + * the output. + */ + +static int s5pc1xx_gpiolib_input(struct gpio_chip *chip, unsigned offset) +{ + struct s3c_gpio_chip *ourchip = to_s3c_gpio(chip); + void __iomem *base = ourchip->base; + unsigned long con; + + con = __raw_readl(base + OFF_GPCON); + con &= ~(0xf << con_4bit_shift(offset)); + __raw_writel(con, base + OFF_GPCON); + + gpio_dbg("%s: %p: CON now %08lx\n", __func__, base, con); + + return 0; +} + +static int s5pc1xx_gpiolib_output(struct gpio_chip *chip, + unsigned offset, int value) +{ + struct s3c_gpio_chip *ourchip = to_s3c_gpio(chip); + void __iomem *base = ourchip->base; + unsigned long con; + unsigned long dat; + + con = __raw_readl(base + OFF_GPCON); + con &= ~(0xf << con_4bit_shift(offset)); + con |= 0x1 << con_4bit_shift(offset); + + dat = __raw_readl(base + OFF_GPDAT); + if (value) + dat |= 1 << offset; + else + dat &= ~(1 << offset); + + __raw_writel(dat, base + OFF_GPDAT); + __raw_writel(con, base + OFF_GPCON); + __raw_writel(dat, base + OFF_GPDAT); + + gpio_dbg("%s: %p: CON %08lx, DAT %08lx\n", __func__, base, con, dat); + + return 0; +} + +static int s5pc1xx_gpiolib_to_irq(struct gpio_chip *chip, unsigned int offset) +{ + return S3C_IRQ_GPIO(chip->base + offset); +} + +static int s5pc1xx_gpiolib_to_eint(struct gpio_chip *chip, unsigned int offset) +{ + int base; + + base = chip->base - S5PC100_GPH0(0); + if (base == 0) + return IRQ_EINT(offset); + base = chip->base - S5PC100_GPH1(0); + if (base == 0) + return IRQ_EINT(8 + offset); + base = chip->base - S5PC100_GPH2(0); + if (base == 0) + return IRQ_EINT(16 + offset); + base = chip->base - S5PC100_GPH3(0); + if (base == 0) + return IRQ_EINT(24 + offset); + return -EINVAL; +} + +static struct s3c_gpio_cfg gpio_cfg = { + .set_config = s3c_gpio_setcfg_s3c64xx_4bit, + .set_pull = s3c_gpio_setpull_updown, + .get_pull = s3c_gpio_getpull_updown, +}; + +static struct s3c_gpio_cfg gpio_cfg_eint = { + .cfg_eint = 0xf, + .set_config = s3c_gpio_setcfg_s3c64xx_4bit, + .set_pull = s3c_gpio_setpull_updown, + .get_pull = s3c_gpio_getpull_updown, +}; + +static struct s3c_gpio_cfg gpio_cfg_noint = { + .set_config = s3c_gpio_setcfg_s3c64xx_4bit, + .set_pull = s3c_gpio_setpull_updown, + .get_pull = s3c_gpio_getpull_updown, +}; + +static struct s3c_gpio_chip s5pc100_gpio_chips[] = { + { + .base = S5PC100_GPA0_BASE, + .config = &gpio_cfg, + .chip = { + .base = S5PC100_GPA0(0), + .ngpio = S5PC100_GPIO_A0_NR, + .label = "GPA0", + }, + }, { + .base = S5PC100_GPA1_BASE, + .config = &gpio_cfg, + .chip = { + .base = S5PC100_GPA1(0), + .ngpio = S5PC100_GPIO_A1_NR, + .label = "GPA1", + }, + }, { + .base = S5PC100_GPB_BASE, + .config = &gpio_cfg, + .chip = { + .base = S5PC100_GPB(0), + .ngpio = S5PC100_GPIO_B_NR, + .label = "GPB", + }, + }, { + .base = S5PC100_GPC_BASE, + .config = &gpio_cfg, + .chip = { + .base = S5PC100_GPC(0), + .ngpio = S5PC100_GPIO_C_NR, + .label = "GPC", + }, + }, { + .base = S5PC100_GPD_BASE, + .config = &gpio_cfg, + .chip = { + .base = S5PC100_GPD(0), + .ngpio = S5PC100_GPIO_D_NR, + .label = "GPD", + }, + }, { + .base = S5PC100_GPE0_BASE, + .config = &gpio_cfg, + .chip = { + .base = S5PC100_GPE0(0), + .ngpio = S5PC100_GPIO_E0_NR, + .label = "GPE0", + }, + }, { + .base = S5PC100_GPE1_BASE, + .config = &gpio_cfg, + .chip = { + .base = S5PC100_GPE1(0), + .ngpio = S5PC100_GPIO_E1_NR, + .label = "GPE1", + }, + }, { + .base = S5PC100_GPF0_BASE, + .config = &gpio_cfg, + .chip = { + .base = S5PC100_GPF0(0), + .ngpio = S5PC100_GPIO_F0_NR, + .label = "GPF0", + }, + }, { + .base = S5PC100_GPF1_BASE, + .config = &gpio_cfg, + .chip = { + .base = S5PC100_GPF1(0), + .ngpio = S5PC100_GPIO_F1_NR, + .label = "GPF1", + }, + }, { + .base = S5PC100_GPF2_BASE, + .config = &gpio_cfg, + .chip = { + .base = S5PC100_GPF2(0), + .ngpio = S5PC100_GPIO_F2_NR, + .label = "GPF2", + }, + }, { + .base = S5PC100_GPF3_BASE, + .config = &gpio_cfg, + .chip = { + .base = S5PC100_GPF3(0), + .ngpio = S5PC100_GPIO_F3_NR, + .label = "GPF3", + }, + }, { + .base = S5PC100_GPG0_BASE, + .config = &gpio_cfg, + .chip = { + .base = S5PC100_GPG0(0), + .ngpio = S5PC100_GPIO_G0_NR, + .label = "GPG0", + }, + }, { + .base = S5PC100_GPG1_BASE, + .config = &gpio_cfg, + .chip = { + .base = S5PC100_GPG1(0), + .ngpio = S5PC100_GPIO_G1_NR, + .label = "GPG1", + }, + }, { + .base = S5PC100_GPG2_BASE, + .config = &gpio_cfg, + .chip = { + .base = S5PC100_GPG2(0), + .ngpio = S5PC100_GPIO_G2_NR, + .label = "GPG2", + }, + }, { + .base = S5PC100_GPG3_BASE, + .config = &gpio_cfg, + .chip = { + .base = S5PC100_GPG3(0), + .ngpio = S5PC100_GPIO_G3_NR, + .label = "GPG3", + }, + }, { + .base = S5PC100_GPH0_BASE, + .config = &gpio_cfg_eint, + .chip = { + .base = S5PC100_GPH0(0), + .ngpio = S5PC100_GPIO_H0_NR, + .label = "GPH0", + }, + }, { + .base = S5PC100_GPH1_BASE, + .config = &gpio_cfg_eint, + .chip = { + .base = S5PC100_GPH1(0), + .ngpio = S5PC100_GPIO_H1_NR, + .label = "GPH1", + }, + }, { + .base = S5PC100_GPH2_BASE, + .config = &gpio_cfg_eint, + .chip = { + .base = S5PC100_GPH2(0), + .ngpio = S5PC100_GPIO_H2_NR, + .label = "GPH2", + }, + }, { + .base = S5PC100_GPH3_BASE, + .config = &gpio_cfg_eint, + .chip = { + .base = S5PC100_GPH3(0), + .ngpio = S5PC100_GPIO_H3_NR, + .label = "GPH3", + }, + }, { + .base = S5PC100_GPI_BASE, + .config = &gpio_cfg, + .chip = { + .base = S5PC100_GPI(0), + .ngpio = S5PC100_GPIO_I_NR, + .label = "GPI", + }, + }, { + .base = S5PC100_GPJ0_BASE, + .config = &gpio_cfg, + .chip = { + .base = S5PC100_GPJ0(0), + .ngpio = S5PC100_GPIO_J0_NR, + .label = "GPJ0", + }, + }, { + .base = S5PC100_GPJ1_BASE, + .config = &gpio_cfg, + .chip = { + .base = S5PC100_GPJ1(0), + .ngpio = S5PC100_GPIO_J1_NR, + .label = "GPJ1", + }, + }, { + .base = S5PC100_GPJ2_BASE, + .config = &gpio_cfg, + .chip = { + .base = S5PC100_GPJ2(0), + .ngpio = S5PC100_GPIO_J2_NR, + .label = "GPJ2", + }, + }, { + .base = S5PC100_GPJ3_BASE, + .config = &gpio_cfg, + .chip = { + .base = S5PC100_GPJ3(0), + .ngpio = S5PC100_GPIO_J3_NR, + .label = "GPJ3", + }, + }, { + .base = S5PC100_GPJ4_BASE, + .config = &gpio_cfg, + .chip = { + .base = S5PC100_GPJ4(0), + .ngpio = S5PC100_GPIO_J4_NR, + .label = "GPJ4", + }, + }, { + .base = S5PC100_GPK0_BASE, + .config = &gpio_cfg_noint, + .chip = { + .base = S5PC100_GPK0(0), + .ngpio = S5PC100_GPIO_K0_NR, + .label = "GPK0", + }, + }, { + .base = S5PC100_GPK1_BASE, + .config = &gpio_cfg_noint, + .chip = { + .base = S5PC100_GPK1(0), + .ngpio = S5PC100_GPIO_K1_NR, + .label = "GPK1", + }, + }, { + .base = S5PC100_GPK2_BASE, + .config = &gpio_cfg_noint, + .chip = { + .base = S5PC100_GPK2(0), + .ngpio = S5PC100_GPIO_K2_NR, + .label = "GPK2", + }, + }, { + .base = S5PC100_GPK3_BASE, + .config = &gpio_cfg_noint, + .chip = { + .base = S5PC100_GPK3(0), + .ngpio = S5PC100_GPIO_K3_NR, + .label = "GPK3", + }, + }, { + .base = S5PC100_GPL0_BASE, + .config = &gpio_cfg_noint, + .chip = { + .base = S5PC100_GPL0(0), + .ngpio = S5PC100_GPIO_L0_NR, + .label = "GPL0", + }, + }, { + .base = S5PC100_GPL1_BASE, + .config = &gpio_cfg_noint, + .chip = { + .base = S5PC100_GPL1(0), + .ngpio = S5PC100_GPIO_L1_NR, + .label = "GPL1", + }, + }, { + .base = S5PC100_GPL2_BASE, + .config = &gpio_cfg_noint, + .chip = { + .base = S5PC100_GPL2(0), + .ngpio = S5PC100_GPIO_L2_NR, + .label = "GPL2", + }, + }, { + .base = S5PC100_GPL3_BASE, + .config = &gpio_cfg_noint, + .chip = { + .base = S5PC100_GPL3(0), + .ngpio = S5PC100_GPIO_L3_NR, + .label = "GPL3", + }, + }, { + .base = S5PC100_GPL4_BASE, + .config = &gpio_cfg_noint, + .chip = { + .base = S5PC100_GPL4(0), + .ngpio = S5PC100_GPIO_L4_NR, + .label = "GPL4", + }, + }, +}; + +/* FIXME move from irq-gpio.c */ +extern struct irq_chip s5pc1xx_gpioint; +extern void s5pc1xx_irq_gpioint_handler(unsigned int irq, struct irq_desc *desc); + +static __init void s5pc1xx_gpiolib_link(struct s3c_gpio_chip *chip) +{ + chip->chip.direction_input = s5pc1xx_gpiolib_input; + chip->chip.direction_output = s5pc1xx_gpiolib_output; + chip->pm = __gpio_pm(&s3c_gpio_pm_4bit); + + /* Interrupt */ + if (chip->config == &gpio_cfg) { + int i, irq; + + chip->chip.to_irq = s5pc1xx_gpiolib_to_irq; + + for (i = 0; i < chip->chip.ngpio; i++) { + irq = S3C_IRQ_GPIO_BASE + chip->chip.base + i; + set_irq_chip(irq, &s5pc1xx_gpioint); + set_irq_data(irq, &chip->chip); + set_irq_handler(irq, handle_level_irq); + set_irq_flags(irq, IRQF_VALID); + } + } else if (chip->config == &gpio_cfg_eint) + chip->chip.to_irq = s5pc1xx_gpiolib_to_eint; +} + +static __init void s5pc1xx_gpiolib_add(struct s3c_gpio_chip *chips, + int nr_chips, + void (*fn)(struct s3c_gpio_chip *)) +{ + for (; nr_chips > 0; nr_chips--, chips++) { + if (fn) + (fn)(chips); + s3c_gpiolib_add(chips); + } +} + +static __init int s5pc1xx_gpiolib_init(void) +{ + struct s3c_gpio_chip *chips; + int nr_chips; + + chips = s5pc100_gpio_chips; + nr_chips = ARRAY_SIZE(s5pc100_gpio_chips); + + s5pc1xx_gpiolib_add(chips, nr_chips, s5pc1xx_gpiolib_link); + /* Interrupt */ + set_irq_chained_handler(IRQ_GPIOINT, s5pc1xx_irq_gpioint_handler); + + return 0; +} +core_initcall(s5pc1xx_gpiolib_init); diff --git a/arch/arm/plat-s5pc1xx/include/plat/gpio-cfg-s5pc1xx.h b/arch/arm/plat-s5pc1xx/include/plat/gpio-cfg-s5pc1xx.h new file mode 100644 index 0000000..72ad59f --- /dev/null +++ b/arch/arm/plat-s5pc1xx/include/plat/gpio-cfg-s5pc1xx.h @@ -0,0 +1,32 @@ +/* linux/arch/arm/plat-s5pc1xx/include/plat/gpio-cfg.h + * + * Copyright 2009 Samsung Electronic + * + * S5PC1XX Platform - GPIO pin configuration + * + * 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. +*/ + +/* This file contains the necessary definitions to get the basic gpio + * pin configuration done such as setting a pin to input or output or + * changing the pull-{up,down} configurations. + */ + +#ifndef __GPIO_CFG_S5PC1XX_H +#define __GPIO_CFG_S5PC1XX_H __FILE__ + +typedef unsigned int __bitwise__ s5p_gpio_drvstr_t; + +#define S5P_GPIO_DRVSTR_LV1 0x00 +#define S5P_GPIO_DRVSTR_LV2 0x01 +#define S5P_GPIO_DRVSTR_LV3 0x10 +#define S5P_GPIO_DRVSTR_LV4 0x11 + +extern s5p_gpio_drvstr_t s5p_gpio_get_drvstr(unsigned int pin, unsigned int off); + +extern int s5p_gpio_set_drvstr(unsigned int pin, unsigned int off, + s5p_gpio_drvstr_t drvstr); + +#endif /* __GPIO_CFG_S5PC1XX_H */ diff --git a/arch/arm/plat-s5pc1xx/include/plat/gpio-ext.h b/arch/arm/plat-s5pc1xx/include/plat/gpio-ext.h new file mode 100644 index 0000000..33ad267 --- /dev/null +++ b/arch/arm/plat-s5pc1xx/include/plat/gpio-ext.h @@ -0,0 +1,44 @@ +/* linux/arch/arm/plat-s5pc1xx/include/plat/gpio-eint.h + * + * Copyright 2009 Samsung Electronics Co. + * + * External Interrupt (GPH0 ~ GPH3) control register definitions + * + * 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. +*/ + +#define S5PC1XX_WKUP_INT_CON0_7 (S5PC1XX_EINT_BASE + 0x0) +#define S5PC1XX_WKUP_INT_CON8_15 (S5PC1XX_EINT_BASE + 0x4) +#define S5PC1XX_WKUP_INT_CON16_23 (S5PC1XX_EINT_BASE + 0x8) +#define S5PC1XX_WKUP_INT_CON24_31 (S5PC1XX_EINT_BASE + 0xC) +#define S5PC1XX_WKUP_INT_CON(x) (S5PC1XX_WKUP_INT_CON0_7 + (x * 0x4)) + +#define S5PC1XX_WKUP_INT_FLTCON0_3 (S5PC1XX_EINT_BASE + 0x80) +#define S5PC1XX_WKUP_INT_FLTCON4_7 (S5PC1XX_EINT_BASE + 0x84) +#define S5PC1XX_WKUP_INT_FLTCON8_11 (S5PC1XX_EINT_BASE + 0x88) +#define S5PC1XX_WKUP_INT_FLTCON12_15 (S5PC1XX_EINT_BASE + 0x8C) +#define S5PC1XX_WKUP_INT_FLTCON16_19 (S5PC1XX_EINT_BASE + 0x90) +#define S5PC1XX_WKUP_INT_FLTCON20_23 (S5PC1XX_EINT_BASE + 0x94) +#define S5PC1XX_WKUP_INT_FLTCON24_27 (S5PC1XX_EINT_BASE + 0x98) +#define S5PC1XX_WKUP_INT_FLTCON28_31 (S5PC1XX_EINT_BASE + 0x9C) +#define S5PC1XX_WKUP_INT_FLTCON(x) (S5PC1XX_WKUP_INT_FLTCON0_3 + (x * 0x4)) + +#define S5PC1XX_WKUP_INT_MASK0_7 (S5PC1XX_EINT_BASE + 0x100) +#define S5PC1XX_WKUP_INT_MASK8_15 (S5PC1XX_EINT_BASE + 0x104) +#define S5PC1XX_WKUP_INT_MASK16_23 (S5PC1XX_EINT_BASE + 0x108) +#define S5PC1XX_WKUP_INT_MASK24_31 (S5PC1XX_EINT_BASE + 0x10C) +#define S5PC1XX_WKUP_INT_MASK(x) (S5PC1XX_WKUP_INT_MASK0_7 + (x * 0x4)) + +#define S5PC1XX_WKUP_INT_PEND0_7 (S5PC1XX_EINT_BASE + 0x140) +#define S5PC1XX_WKUP_INT_PEND8_15 (S5PC1XX_EINT_BASE + 0x144) +#define S5PC1XX_WKUP_INT_PEND16_23 (S5PC1XX_EINT_BASE + 0x148) +#define S5PC1XX_WKUP_INT_PEND24_31 (S5PC1XX_EINT_BASE + 0x14C) +#define S5PC1XX_WKUP_INT_PEND(x) (S5PC1XX_WKUP_INT_PEND0_7 + (x * 0x4)) + +#define S5PC1XX_WKUP_INT_LOWLEV (0x00) +#define S5PC1XX_WKUP_INT_HILEV (0x01) +#define S5PC1XX_WKUP_INT_FALLEDGE (0x02) +#define S5PC1XX_WKUP_INT_RISEEDGE (0x03) +#define S5PC1XX_WKUP_INT_BOTHEDGE (0x04) diff --git a/arch/arm/plat-s5pc1xx/include/plat/irqs.h b/arch/arm/plat-s5pc1xx/include/plat/irqs.h index f07d8c3..ef87363 100644 --- a/arch/arm/plat-s5pc1xx/include/plat/irqs.h +++ b/arch/arm/plat-s5pc1xx/include/plat/irqs.h @@ -171,12 +171,21 @@ #define IRQ_SDMIRQ S5PC1XX_IRQ_VIC2(30) #define IRQ_SDMFIQ S5PC1XX_IRQ_VIC2(31) +/* External interrupt */ #define S3C_IRQ_EINT_BASE (IRQ_SDMFIQ + 1) -#define S3C_EINT(x) ((x) + S3C_IRQ_EINT_BASE) -#define IRQ_EINT(x) S3C_EINT(x) +#define S3C_EINT(x) (S3C_IRQ_EINT_BASE + (x - 16)) +#define IRQ_EINT(x) (x < 16 ? IRQ_EINT0 + x : S3C_EINT(x)) +#define IRQ_EINT_BIT(x) (x < IRQ_EINT16_31 ? x - IRQ_EINT0 : x - S3C_EINT(0)) -#define NR_IRQS (IRQ_EINT(31)+1) +/* GPIO interrupt */ +#define S3C_IRQ_GPIO_BASE (IRQ_EINT(31) + 1) +#define S3C_IRQ_GPIO(x) (S3C_IRQ_GPIO_BASE + (x)) + +/* + * Until MP04 Groups -> 40 (exactly 39) Groups * 8 ~= 320 GPIOs + */ +#define NR_IRQS (S3C_IRQ_GPIO(320) + 1) #endif /* __ASM_PLAT_S5PC1XX_IRQS_H */ diff --git a/arch/arm/plat-s5pc1xx/include/plat/regs-gpio.h b/arch/arm/plat-s5pc1xx/include/plat/regs-gpio.h new file mode 100644 index 0000000..43c7bc8 --- /dev/null +++ b/arch/arm/plat-s5pc1xx/include/plat/regs-gpio.h @@ -0,0 +1,70 @@ +/* linux/arch/arm/plat-s5pc1xx/include/plat/regs-gpio.h + * + * Copyright 2009 Samsung Electronics Co. + * Byungho Min <bhmin@samsung.com> + * + * S5PC1XX - GPIO register definitions + */ + +#ifndef __ASM_PLAT_S5PC1XX_REGS_GPIO_H +#define __ASM_PLAT_S5PC1XX_REGS_GPIO_H __FILE__ + +#include <mach/map.h> + +/* S5PC100 */ +#define S5PC100_GPIO_BASE S5PC1XX_VA_GPIO +#define S5PC100_GPA0_BASE (S5PC100_GPIO_BASE + 0x0000) +#define S5PC100_GPA1_BASE (S5PC100_GPIO_BASE + 0x0020) +#define S5PC100_GPB_BASE (S5PC100_GPIO_BASE + 0x0040) +#define S5PC100_GPC_BASE (S5PC100_GPIO_BASE + 0x0060) +#define S5PC100_GPD_BASE (S5PC100_GPIO_BASE + 0x0080) +#define S5PC100_GPE0_BASE (S5PC100_GPIO_BASE + 0x00A0) +#define S5PC100_GPE1_BASE (S5PC100_GPIO_BASE + 0x00C0) +#define S5PC100_GPF0_BASE (S5PC100_GPIO_BASE + 0x00E0) +#define S5PC100_GPF1_BASE (S5PC100_GPIO_BASE + 0x0100) +#define S5PC100_GPF2_BASE (S5PC100_GPIO_BASE + 0x0120) +#define S5PC100_GPF3_BASE (S5PC100_GPIO_BASE + 0x0140) +#define S5PC100_GPG0_BASE (S5PC100_GPIO_BASE + 0x0160) +#define S5PC100_GPG1_BASE (S5PC100_GPIO_BASE + 0x0180) +#define S5PC100_GPG2_BASE (S5PC100_GPIO_BASE + 0x01A0) +#define S5PC100_GPG3_BASE (S5PC100_GPIO_BASE + 0x01C0) +#define S5PC100_GPH0_BASE (S5PC100_GPIO_BASE + 0x0C00) +#define S5PC100_GPH1_BASE (S5PC100_GPIO_BASE + 0x0C20) +#define S5PC100_GPH2_BASE (S5PC100_GPIO_BASE + 0x0C40) +#define S5PC100_GPH3_BASE (S5PC100_GPIO_BASE + 0x0C60) +#define S5PC100_GPI_BASE (S5PC100_GPIO_BASE + 0x01E0) +#define S5PC100_GPJ0_BASE (S5PC100_GPIO_BASE + 0x0200) +#define S5PC100_GPJ1_BASE (S5PC100_GPIO_BASE + 0x0220) +#define S5PC100_GPJ2_BASE (S5PC100_GPIO_BASE + 0x0240) +#define S5PC100_GPJ3_BASE (S5PC100_GPIO_BASE + 0x0260) +#define S5PC100_GPJ4_BASE (S5PC100_GPIO_BASE + 0x0280) +#define S5PC100_GPK0_BASE (S5PC100_GPIO_BASE + 0x02A0) +#define S5PC100_GPK1_BASE (S5PC100_GPIO_BASE + 0x02C0) +#define S5PC100_GPK2_BASE (S5PC100_GPIO_BASE + 0x02E0) +#define S5PC100_GPK3_BASE (S5PC100_GPIO_BASE + 0x0300) +#define S5PC100_GPL0_BASE (S5PC100_GPIO_BASE + 0x0320) +#define S5PC100_GPL1_BASE (S5PC100_GPIO_BASE + 0x0340) +#define S5PC100_GPL2_BASE (S5PC100_GPIO_BASE + 0x0360) +#define S5PC100_GPL3_BASE (S5PC100_GPIO_BASE + 0x0380) +#define S5PC100_GPL4_BASE (S5PC100_GPIO_BASE + 0x03A0) +#define S5PC100_EINT_BASE (S5PC100_GPIO_BASE + 0x0E00) + +#define S5PC100_UHOST (S5PC100_GPIO_BASE + 0x0B68) +#define S5PC100_PDNEN (S5PC100_GPIO_BASE + 0x0F80) + +/* PDNEN */ +#define S5PC100_PDNEN_CFG_PDNEN (1 << 1) +#define S5PC100_PDNEN_CFG_AUTO (0 << 1) +#define S5PC100_PDNEN_POWERDOWN (1 << 0) +#define S5PC100_PDNEN_NORMAL (0 << 0) + +/* Common part */ +/* External interrupt base is same at both s5pc100 and s5pc110 */ +#define S5PC1XX_EINT_BASE (S5PC100_EINT_BASE) + +#define S5PC100_GPx_INPUT(__gpio) (0x0 << ((__gpio) * 4)) +#define S5PC100_GPx_OUTPUT(__gpio) (0x1 << ((__gpio) * 4)) +#define S5PC100_GPx_CONMASK(__gpio) (0xf << ((__gpio) * 4)) + +#endif /* __ASM_PLAT_S5PC1XX_REGS_GPIO_H */ + diff --git a/arch/arm/plat-s5pc1xx/irq-eint.c b/arch/arm/plat-s5pc1xx/irq-eint.c new file mode 100644 index 0000000..373122f --- /dev/null +++ b/arch/arm/plat-s5pc1xx/irq-eint.c @@ -0,0 +1,281 @@ +/* + * linux/arch/arm/plat-s5pc1xx/irq-eint.c + * + * Copyright 2009 Samsung Electronics Co. + * Byungho Min <bhmin@samsung.com> + * Kyungin Park <kyungmin.park@samsung.com> + * + * Based on plat-s3c64xx/irq-eint.c + * + * S5PC1XX - Interrupt handling for IRQ_EINT(x) + * + * 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/kernel.h> +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/io.h> +#include <linux/sysdev.h> +#include <linux/pm.h> +#include <linux/gpio.h> + +#include <asm/hardware/vic.h> + +#include <mach/map.h> + +#include <plat/gpio-cfg.h> +#include <plat/gpio-ext.h> +#include <plat/pm.h> +#include <plat/regs-gpio.h> +#include <plat/regs-irqtype.h> + +/* + * bank is a group of external interrupt + * bank0 means EINT0 ... EINT7 + * bank1 means EINT8 ... EINT15 + * bank2 means EINT16 ... EINT23 + * bank3 means EINT24 ... EINT31 + */ + +static inline int s3c_get_eint(unsigned int irq) +{ + int real; + + if (irq < IRQ_EINT16_31) + real = (irq - IRQ_EINT0); + else + real = (irq - S3C_IRQ_EINT_BASE) + IRQ_EINT16_31 - IRQ_EINT0; + + return real; +} + +static inline int s3c_get_bank(unsigned int irq) +{ + return s3c_get_eint(irq) >> 3; +} + +static inline int s3c_eint_to_bit(unsigned int irq) +{ + int real, bit; + + real = s3c_get_eint(irq); + bit = 1 << (real & (8 - 1)); + + return bit; +} + +static inline void s3c_irq_eint_mask(unsigned int irq) +{ + u32 mask; + u32 bank = s3c_get_bank(irq); + + mask = __raw_readl(S5PC1XX_WKUP_INT_MASK(bank)); + mask |= s3c_eint_to_bit(irq); + __raw_writel(mask, S5PC1XX_WKUP_INT_MASK(bank)); +} + +static void s3c_irq_eint_unmask(unsigned int irq) +{ + u32 mask; + u32 bank = s3c_get_bank(irq); + + mask = __raw_readl(S5PC1XX_WKUP_INT_MASK(bank)); + mask &= ~(s3c_eint_to_bit(irq)); + __raw_writel(mask, S5PC1XX_WKUP_INT_MASK(bank)); +} + +static inline void s3c_irq_eint_ack(unsigned int irq) +{ + u32 bank = s3c_get_bank(irq); + + __raw_writel(s3c_eint_to_bit(irq), S5PC1XX_WKUP_INT_PEND(bank)); +} + +static void s3c_irq_eint_maskack(unsigned int irq) +{ + /* compiler should in-line these */ + s3c_irq_eint_mask(irq); + s3c_irq_eint_ack(irq); +} + +static int s3c_irq_eint_set_type(unsigned int irq, unsigned int type) +{ + u32 bank = s3c_get_bank(irq); + int real = s3c_get_eint(irq); + int gpio, shift, sfn; + u32 ctrl, con = 0; + + switch (type) { + case IRQ_TYPE_NONE: + printk(KERN_WARNING "No edge setting!\n"); + break; + + case IRQ_TYPE_EDGE_RISING: + con = S5PC1XX_WKUP_INT_RISEEDGE; + break; + + case IRQ_TYPE_EDGE_FALLING: + con = S5PC1XX_WKUP_INT_FALLEDGE; + break; + + case IRQ_TYPE_EDGE_BOTH: + con = S5PC1XX_WKUP_INT_BOTHEDGE; + break; + + case IRQ_TYPE_LEVEL_LOW: + con = S5PC1XX_WKUP_INT_LOWLEV; + break; + + case IRQ_TYPE_LEVEL_HIGH: + con = S5PC1XX_WKUP_INT_HILEV; + break; + + default: + printk(KERN_ERR "No such irq type %d", type); + return -EINVAL; + } + + gpio = real & (8 - 1); + shift = gpio << 2; + + ctrl = __raw_readl(S5PC1XX_WKUP_INT_CON(bank)); + ctrl &= ~(0x7 << shift); + ctrl |= con << shift; + __raw_writel(ctrl, S5PC1XX_WKUP_INT_CON(bank)); + + switch (real) { + case 0 ... 7: + gpio = S5PC100_GPH0(gpio); + break; + case 8 ... 15: + gpio = S5PC100_GPH1(gpio); + break; + case 16 ... 23: + gpio = S5PC100_GPH2(gpio); + break; + case 24 ... 31: + gpio = S5PC100_GPH3(gpio); + break; + default: + return -EINVAL; + } + + sfn = S3C_GPIO_SFN(0x2); + s3c_gpio_cfgpin(gpio, sfn); + + return 0; +} + +static struct irq_chip s3c_irq_eint = { + .name = "EINT", + .mask = s3c_irq_eint_mask, + .unmask = s3c_irq_eint_unmask, + .mask_ack = s3c_irq_eint_maskack, + .ack = s3c_irq_eint_ack, + .set_type = s3c_irq_eint_set_type, + .set_wake = s3c_irqext_wake, +}; + +/* s3c_irq_demux_eint + * + * This function demuxes the IRQ from external interrupts, + * from IRQ_EINT(16) to IRQ_EINT(31). It is designed to be inlined into + * the specific handlers s3c_irq_demux_eintX_Y. + */ +static inline void s3c_irq_demux_eint(unsigned int start, unsigned int end) +{ + u32 status = __raw_readl(S5PC1XX_WKUP_INT_PEND((start >> 3))); + u32 mask = __raw_readl(S5PC1XX_WKUP_INT_MASK((start >> 3))); + unsigned int irq; + + status &= ~mask; + status &= (1 << (end - start + 1)) - 1; + + for (irq = IRQ_EINT(start); irq <= IRQ_EINT(end); irq++) { + if (status & 1) + generic_handle_irq(irq); + + status >>= 1; + } +} + +static void s3c_irq_demux_eint16_31(unsigned int irq, struct irq_desc *desc) +{ + s3c_irq_demux_eint(16, 23); + s3c_irq_demux_eint(24, 31); +} + +/* + * Handle EINT0 ... EINT15 at VIC directly + */ +static void s3c_irq_vic_eint_mask(unsigned int irq) +{ + void __iomem *base = get_irq_chip_data(irq); + unsigned int real; + + s3c_irq_eint_mask(irq); + real = s3c_get_eint(irq); + writel(1 << real, base + VIC_INT_ENABLE_CLEAR); +} + +static void s3c_irq_vic_eint_unmask(unsigned int irq) +{ + void __iomem *base = get_irq_chip_data(irq); + unsigned int real; + + s3c_irq_eint_unmask(irq); + real = s3c_get_eint(irq); + writel(1 << real, base + VIC_INT_ENABLE); +} + +static inline void s3c_irq_vic_eint_ack(unsigned int irq) +{ + u32 bit; + u32 bank = s3c_get_bank(irq); + + bit = s3c_eint_to_bit(irq); + __raw_writel(bit, S5PC1XX_WKUP_INT_PEND(bank)); +} + +static void s3c_irq_vic_eint_maskack(unsigned int irq) +{ + /* compiler should in-line these */ + s3c_irq_vic_eint_mask(irq); + s3c_irq_vic_eint_ack(irq); +} + +static struct irq_chip s3c_irq_vic_eint = { + .name = "EINT", + .mask = s3c_irq_vic_eint_mask, + .unmask = s3c_irq_vic_eint_unmask, + .mask_ack = s3c_irq_vic_eint_maskack, + .ack = s3c_irq_vic_eint_ack, + .set_type = s3c_irq_eint_set_type, + .set_wake = s3c_irqext_wake, +}; + +static int __init s5pc1xx_init_irq_eint(void) +{ + int irq; + + for (irq = IRQ_EINT0; irq <= IRQ_EINT15; irq++) { + set_irq_chip(irq, &s3c_irq_vic_eint); + set_irq_handler(irq, handle_level_irq); + set_irq_flags(irq, IRQF_VALID); + } + + for (irq = IRQ_EINT(16); irq <= IRQ_EINT(31); irq++) { + set_irq_chip(irq, &s3c_irq_eint); + set_irq_handler(irq, handle_level_irq); + set_irq_flags(irq, IRQF_VALID); + } + + set_irq_chained_handler(IRQ_EINT16_31, s3c_irq_demux_eint16_31); + + return 0; +} + +arch_initcall(s5pc1xx_init_irq_eint); diff --git a/arch/arm/plat-s5pc1xx/irq-gpio.c b/arch/arm/plat-s5pc1xx/irq-gpio.c new file mode 100644 index 0000000..fecca7a --- /dev/null +++ b/arch/arm/plat-s5pc1xx/irq-gpio.c @@ -0,0 +1,266 @@ +/* + * arch/arm/plat-s5pc1xx/irq-gpio.c + * + * Copyright (C) 2009 Samsung Electronics + * + * S5PC1XX - Interrupt handling for IRQ_GPIO${group}(x) + * + * 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/kernel.h> +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/io.h> +#include <linux/gpio.h> + +#include <mach/map.h> +#include <plat/gpio-cfg.h> + +#define S5PC1XX_GPIOREG(x) (S5PC1XX_VA_GPIO + (x)) + +#define CON_OFFSET 0x700 +#define MASK_OFFSET 0x900 +#define PEND_OFFSET 0xA00 +#define CON_OFFSET_2 0xE00 +#define MASK_OFFSET_2 0xF00 +#define PEND_OFFSET_2 0xF40 + +#define GPIOINT_LEVEL_LOW 0x0 +#define GPIOINT_LEVEL_HIGH 0x1 +#define GPIOINT_EDGE_FALLING 0x2 +#define GPIOINT_EDGE_RISING 0x3 +#define GPIOINT_EDGE_BOTH 0x4 + +static int group_to_con_offset(int group) +{ + return group << 2; +} + +static int group_to_mask_offset(int group) +{ + return group << 2; +} + +static int group_to_pend_offset(int group) +{ + return group << 2; +} + +static int s5pc1xx_get_start(unsigned int group) +{ + switch (group) { + case 0: return S5PC100_GPIO_A0_START; + case 1: return S5PC100_GPIO_A1_START; + case 2: return S5PC100_GPIO_B_START; + case 3: return S5PC100_GPIO_C_START; + case 4: return S5PC100_GPIO_D_START; + case 5: return S5PC100_GPIO_E0_START; + case 6: return S5PC100_GPIO_E1_START; + case 7: return S5PC100_GPIO_F0_START; + case 8: return S5PC100_GPIO_F1_START; + case 9: return S5PC100_GPIO_F2_START; + case 10: return S5PC100_GPIO_F3_START; + case 11: return S5PC100_GPIO_G0_START; + case 12: return S5PC100_GPIO_G1_START; + case 13: return S5PC100_GPIO_G2_START; + case 14: return S5PC100_GPIO_G3_START; + case 15: return S5PC100_GPIO_I_START; + case 16: return S5PC100_GPIO_J0_START; + case 17: return S5PC100_GPIO_J1_START; + case 18: return S5PC100_GPIO_J2_START; + case 19: return S5PC100_GPIO_J3_START; + case 20: return S5PC100_GPIO_J4_START; + default: + BUG(); + } + + return -EINVAL; +} + +static int s5pc1xx_get_group(unsigned int irq) +{ + irq -= S3C_IRQ_GPIO(0); + + switch (irq) { + case S5PC100_GPIO_A0_START ... S5PC100_GPIO_A1_START - 1: + return 0; + case S5PC100_GPIO_A1_START ... S5PC100_GPIO_B_START - 1: + return 1; + case S5PC100_GPIO_B_START ... S5PC100_GPIO_C_START - 1: + return 2; + case S5PC100_GPIO_C_START ... S5PC100_GPIO_D_START - 1: + return 3; + case S5PC100_GPIO_D_START ... S5PC100_GPIO_E0_START - 1: + return 4; + case S5PC100_GPIO_E0_START ... S5PC100_GPIO_E1_START - 1: + return 5; + case S5PC100_GPIO_E1_START ... S5PC100_GPIO_F0_START - 1: + return 6; + case S5PC100_GPIO_F0_START ... S5PC100_GPIO_F1_START - 1: + return 7; + case S5PC100_GPIO_F1_START ... S5PC100_GPIO_F2_START - 1: + return 8; + case S5PC100_GPIO_F2_START ... S5PC100_GPIO_F3_START - 1: + return 9; + case S5PC100_GPIO_F3_START ... S5PC100_GPIO_G0_START - 1: + return 10; + case S5PC100_GPIO_G0_START ... S5PC100_GPIO_G1_START - 1: + return 11; + case S5PC100_GPIO_G1_START ... S5PC100_GPIO_G2_START - 1: + return 12; + case S5PC100_GPIO_G2_START ... S5PC100_GPIO_G3_START - 1: + return 13; + case S5PC100_GPIO_G3_START ... S5PC100_GPIO_H0_START - 1: + return 14; + case S5PC100_GPIO_I_START ... S5PC100_GPIO_J0_START - 1: + return 15; + case S5PC100_GPIO_J0_START ... S5PC100_GPIO_J1_START - 1: + return 16; + case S5PC100_GPIO_J1_START ... S5PC100_GPIO_J2_START - 1: + return 17; + case S5PC100_GPIO_J2_START ... S5PC100_GPIO_J3_START - 1: + return 18; + case S5PC100_GPIO_J3_START ... S5PC100_GPIO_J4_START - 1: + return 19; + case S5PC100_GPIO_J4_START ... S5PC100_GPIO_K0_START - 1: + return 20; + default: + BUG(); + } + + return -EINVAL; +} + +static int s5pc1xx_get_offset(unsigned int irq) +{ + struct gpio_chip *chip = get_irq_data(irq); + return irq - S3C_IRQ_GPIO(chip->base); +} + +static void s5pc1xx_gpioint_ack(unsigned int irq) +{ + int group, offset, pend_offset; + unsigned int value; + + group = s5pc1xx_get_group(irq); + offset = s5pc1xx_get_offset(irq); + pend_offset = group_to_pend_offset(group); + + value = __raw_readl(S5PC1XX_GPIOREG(PEND_OFFSET) + pend_offset); + value |= 1 << offset; + __raw_writel(value, S5PC1XX_GPIOREG(PEND_OFFSET) + pend_offset); +} + +static void s5pc1xx_gpioint_mask(unsigned int irq) +{ + int group, offset, mask_offset; + unsigned int value; + + group = s5pc1xx_get_group(irq); + offset = s5pc1xx_get_offset(irq); + mask_offset = group_to_mask_offset(group); + + value = __raw_readl(S5PC1XX_GPIOREG(MASK_OFFSET) + mask_offset); + value |= 1 << offset; + __raw_writel(value, S5PC1XX_GPIOREG(MASK_OFFSET) + mask_offset); +} + +static void s5pc1xx_gpioint_unmask(unsigned int irq) +{ + int group, offset, mask_offset; + unsigned int value; + + group = s5pc1xx_get_group(irq); + offset = s5pc1xx_get_offset(irq); + mask_offset = group_to_mask_offset(group); + + value = __raw_readl(S5PC1XX_GPIOREG(MASK_OFFSET) + mask_offset); + value &= ~(1 << offset); + __raw_writel(value, S5PC1XX_GPIOREG(MASK_OFFSET) + mask_offset); +} + +static void s5pc1xx_gpioint_mask_ack(unsigned int irq) +{ + s5pc1xx_gpioint_mask(irq); + s5pc1xx_gpioint_ack(irq); +} + +static int s5pc1xx_gpioint_set_type(unsigned int irq, unsigned int type) +{ + int group, offset, con_offset; + unsigned int value; + + group = s5pc1xx_get_group(irq); + offset = s5pc1xx_get_offset(irq); + con_offset = group_to_con_offset(group); + + switch (type) { + case IRQ_TYPE_NONE: + printk(KERN_WARNING "No irq type\n"); + return -EINVAL; + case IRQ_TYPE_EDGE_RISING: + type = GPIOINT_EDGE_RISING; + break; + case IRQ_TYPE_EDGE_FALLING: + type = GPIOINT_EDGE_FALLING; + break; + case IRQ_TYPE_EDGE_BOTH: + type = GPIOINT_EDGE_BOTH; + break; + case IRQ_TYPE_LEVEL_HIGH: + type = GPIOINT_LEVEL_HIGH; + break; + case IRQ_TYPE_LEVEL_LOW: + type = GPIOINT_LEVEL_LOW; + break; + default: + BUG(); + } + + + value = __raw_readl(S5PC1XX_GPIOREG(CON_OFFSET) + con_offset); + value &= ~(0xf << (offset * 0x4)); + value |= (type << (offset * 0x4)); + __raw_writel(value, S5PC1XX_GPIOREG(CON_OFFSET) + con_offset); + + return 0; +} + +struct irq_chip s5pc1xx_gpioint = { + .name = "GPIO", + .ack = s5pc1xx_gpioint_ack, + .mask = s5pc1xx_gpioint_mask, + .mask_ack = s5pc1xx_gpioint_mask_ack, + .unmask = s5pc1xx_gpioint_unmask, + .set_type = s5pc1xx_gpioint_set_type, +}; + +void s5pc1xx_irq_gpioint_handler(unsigned int irq, struct irq_desc *desc) +{ + int group, offset, pend_offset, mask_offset; + int real_irq, group_end; + unsigned int pend, mask; + + group_end = 21; + + for (group = 0; group < group_end; group++) { + pend_offset = group_to_pend_offset(group); + pend = __raw_readl(S5PC1XX_GPIOREG(PEND_OFFSET) + pend_offset); + if (!pend) + continue; + + mask_offset = group_to_mask_offset(group); + mask = __raw_readl(S5PC1XX_GPIOREG(MASK_OFFSET) + mask_offset); + pend &= ~mask; + + for (offset = 0; offset < 8; offset++) { + if (pend & (1 << offset)) { + real_irq = s5pc1xx_get_start(group) + offset; + generic_handle_irq(S3C_IRQ_GPIO(real_irq)); + } + } + } +} diff --git a/arch/arm/plat-s5pc1xx/irq.c b/arch/arm/plat-s5pc1xx/irq.c index 80d6dd9..e44fd04 100644 --- a/arch/arm/plat-s5pc1xx/irq.c +++ b/arch/arm/plat-s5pc1xx/irq.c @@ -79,7 +79,7 @@ static void s3c_irq_timer_ack(unsigned int irq) { u32 reg = __raw_readl(S3C64XX_TINT_CSTAT); - reg &= 0x1f; + reg &= 0x1f; /* mask out pending interrupts */ reg |= (1 << 5) << (irq - IRQ_TIMER0); __raw_writel(reg, S3C64XX_TINT_CSTAT); } |
