diff options
Diffstat (limited to 'drivers/gpio/gpio-s5pv210.c')
| -rw-r--r-- | drivers/gpio/gpio-s5pv210.c | 288 |
1 files changed, 288 insertions, 0 deletions
diff --git a/drivers/gpio/gpio-s5pv210.c b/drivers/gpio/gpio-s5pv210.c new file mode 100644 index 0000000..1ba20a7 --- /dev/null +++ b/drivers/gpio/gpio-s5pv210.c @@ -0,0 +1,288 @@ +/* linux/arch/arm/mach-s5pv210/gpiolib.c + * + * Copyright (c) 2010 Samsung Electronics Co., Ltd. + * http://www.samsung.com/ + * + * S5PV210 - 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 <plat/gpio-core.h> +#include <plat/gpio-cfg.h> +#include <plat/gpio-cfg-helpers.h> +#include <mach/map.h> + +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_noint = { + .set_config = s3c_gpio_setcfg_s3c64xx_4bit, + .set_pull = s3c_gpio_setpull_updown, + .get_pull = s3c_gpio_getpull_updown, +}; + +/* GPIO bank's base address given the index of the bank in the + * list of all gpio banks. + */ +#define S5PV210_BANK_BASE(bank_nr) (S5P_VA_GPIO + ((bank_nr) * 0x20)) + +/* + * Following are the gpio banks in v210. + * + * The 'config' member when left to NULL, is initialized to the default + * structure gpio_cfg in the init function below. + * + * The 'base' member is also initialized in the init function below. + * Note: The initialization of 'base' member of s3c_gpio_chip structure + * uses the above macro and depends on the banks being listed in order here. + */ +static struct s3c_gpio_chip s5pv210_gpio_4bit[] = { + { + .chip = { + .base = S5PV210_GPA0(0), + .ngpio = S5PV210_GPIO_A0_NR, + .label = "GPA0", + }, + }, { + .chip = { + .base = S5PV210_GPA1(0), + .ngpio = S5PV210_GPIO_A1_NR, + .label = "GPA1", + }, + }, { + .chip = { + .base = S5PV210_GPB(0), + .ngpio = S5PV210_GPIO_B_NR, + .label = "GPB", + }, + }, { + .chip = { + .base = S5PV210_GPC0(0), + .ngpio = S5PV210_GPIO_C0_NR, + .label = "GPC0", + }, + }, { + .chip = { + .base = S5PV210_GPC1(0), + .ngpio = S5PV210_GPIO_C1_NR, + .label = "GPC1", + }, + }, { + .chip = { + .base = S5PV210_GPD0(0), + .ngpio = S5PV210_GPIO_D0_NR, + .label = "GPD0", + }, + }, { + .chip = { + .base = S5PV210_GPD1(0), + .ngpio = S5PV210_GPIO_D1_NR, + .label = "GPD1", + }, + }, { + .chip = { + .base = S5PV210_GPE0(0), + .ngpio = S5PV210_GPIO_E0_NR, + .label = "GPE0", + }, + }, { + .chip = { + .base = S5PV210_GPE1(0), + .ngpio = S5PV210_GPIO_E1_NR, + .label = "GPE1", + }, + }, { + .chip = { + .base = S5PV210_GPF0(0), + .ngpio = S5PV210_GPIO_F0_NR, + .label = "GPF0", + }, + }, { + .chip = { + .base = S5PV210_GPF1(0), + .ngpio = S5PV210_GPIO_F1_NR, + .label = "GPF1", + }, + }, { + .chip = { + .base = S5PV210_GPF2(0), + .ngpio = S5PV210_GPIO_F2_NR, + .label = "GPF2", + }, + }, { + .chip = { + .base = S5PV210_GPF3(0), + .ngpio = S5PV210_GPIO_F3_NR, + .label = "GPF3", + }, + }, { + .chip = { + .base = S5PV210_GPG0(0), + .ngpio = S5PV210_GPIO_G0_NR, + .label = "GPG0", + }, + }, { + .chip = { + .base = S5PV210_GPG1(0), + .ngpio = S5PV210_GPIO_G1_NR, + .label = "GPG1", + }, + }, { + .chip = { + .base = S5PV210_GPG2(0), + .ngpio = S5PV210_GPIO_G2_NR, + .label = "GPG2", + }, + }, { + .chip = { + .base = S5PV210_GPG3(0), + .ngpio = S5PV210_GPIO_G3_NR, + .label = "GPG3", + }, + }, { + .config = &gpio_cfg_noint, + .chip = { + .base = S5PV210_GPI(0), + .ngpio = S5PV210_GPIO_I_NR, + .label = "GPI", + }, + }, { + .chip = { + .base = S5PV210_GPJ0(0), + .ngpio = S5PV210_GPIO_J0_NR, + .label = "GPJ0", + }, + }, { + .chip = { + .base = S5PV210_GPJ1(0), + .ngpio = S5PV210_GPIO_J1_NR, + .label = "GPJ1", + }, + }, { + .chip = { + .base = S5PV210_GPJ2(0), + .ngpio = S5PV210_GPIO_J2_NR, + .label = "GPJ2", + }, + }, { + .chip = { + .base = S5PV210_GPJ3(0), + .ngpio = S5PV210_GPIO_J3_NR, + .label = "GPJ3", + }, + }, { + .chip = { + .base = S5PV210_GPJ4(0), + .ngpio = S5PV210_GPIO_J4_NR, + .label = "GPJ4", + }, + }, { + .config = &gpio_cfg_noint, + .chip = { + .base = S5PV210_MP01(0), + .ngpio = S5PV210_GPIO_MP01_NR, + .label = "MP01", + }, + }, { + .config = &gpio_cfg_noint, + .chip = { + .base = S5PV210_MP02(0), + .ngpio = S5PV210_GPIO_MP02_NR, + .label = "MP02", + }, + }, { + .config = &gpio_cfg_noint, + .chip = { + .base = S5PV210_MP03(0), + .ngpio = S5PV210_GPIO_MP03_NR, + .label = "MP03", + }, + }, { + .config = &gpio_cfg_noint, + .chip = { + .base = S5PV210_MP04(0), + .ngpio = S5PV210_GPIO_MP04_NR, + .label = "MP04", + }, + }, { + .config = &gpio_cfg_noint, + .chip = { + .base = S5PV210_MP05(0), + .ngpio = S5PV210_GPIO_MP05_NR, + .label = "MP05", + }, + }, { + .base = (S5P_VA_GPIO + 0xC00), + .config = &gpio_cfg_noint, + .irq_base = IRQ_EINT(0), + .chip = { + .base = S5PV210_GPH0(0), + .ngpio = S5PV210_GPIO_H0_NR, + .label = "GPH0", + .to_irq = samsung_gpiolib_to_irq, + }, + }, { + .base = (S5P_VA_GPIO + 0xC20), + .config = &gpio_cfg_noint, + .irq_base = IRQ_EINT(8), + .chip = { + .base = S5PV210_GPH1(0), + .ngpio = S5PV210_GPIO_H1_NR, + .label = "GPH1", + .to_irq = samsung_gpiolib_to_irq, + }, + }, { + .base = (S5P_VA_GPIO + 0xC40), + .config = &gpio_cfg_noint, + .irq_base = IRQ_EINT(16), + .chip = { + .base = S5PV210_GPH2(0), + .ngpio = S5PV210_GPIO_H2_NR, + .label = "GPH2", + .to_irq = samsung_gpiolib_to_irq, + }, + }, { + .base = (S5P_VA_GPIO + 0xC60), + .config = &gpio_cfg_noint, + .irq_base = IRQ_EINT(24), + .chip = { + .base = S5PV210_GPH3(0), + .ngpio = S5PV210_GPIO_H3_NR, + .label = "GPH3", + .to_irq = samsung_gpiolib_to_irq, + }, + }, +}; + +static __init int s5pv210_gpiolib_init(void) +{ + struct s3c_gpio_chip *chip = s5pv210_gpio_4bit; + int nr_chips = ARRAY_SIZE(s5pv210_gpio_4bit); + int gpioint_group = 0; + int i = 0; + + for (i = 0; i < nr_chips; i++, chip++) { + if (chip->config == NULL) { + chip->config = &gpio_cfg; + chip->group = gpioint_group++; + } + if (chip->base == NULL) + chip->base = S5PV210_BANK_BASE(i); + } + + samsung_gpiolib_add_4bit_chips(s5pv210_gpio_4bit, nr_chips); + s5p_register_gpioint_bank(IRQ_GPIOINT, 0, S5P_GPIOINT_GROUP_MAXNR); + + return 0; +} +core_initcall(s5pv210_gpiolib_init); |