- 根目录:
- drivers
- gpio
- gpio-s5pc100.c
/* linux/arch/arm/mach-s5pc100/gpiolib.c
*
* Copyright (c) 2010 Samsung Electronics Co., Ltd.
* http://www.samsung.com
*
* Copyright 2009 Samsung Electronics Co
* Kyungmin Park <kyungmin.park@samsung.com>
*
* S5PC100 - 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/regs-gpio.h>
#include <plat/gpio-core.h>
#include <plat/gpio-cfg.h>
#include <plat/gpio-cfg-helpers.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
*/
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,
};
/*
* GPIO bank's base address given the index of the bank in the
* list of all gpio banks.
*/
#define S5PC100_BANK_BASE(bank_nr) (S5P_VA_GPIO + ((bank_nr) * 0x20))
/*
* Following are the gpio banks in S5PC100.
*
* 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 s5pc100_gpio_chips[] = {
{
.chip = {
.base = S5PC100_GPA0(0),
.ngpio = S5PC100_GPIO_A0_NR,
.label = "GPA0",
},
}, {
.chip = {
.base = S5PC100_GPA1(0),
.ngpio = S5PC100_GPIO_A1_NR,
.label = "GPA1",
},
}, {
.chip = {
.base = S5PC100_GPB(0),
.ngpio = S5PC100_GPIO_B_NR,
.label = "GPB",
},
}, {
.chip = {
.base = S5PC100_GPC(0),
.ngpio = S5PC100_GPIO_C_NR,
.label = "GPC",
},
}, {
.chip = {
.base = S5PC100_GPD(0),
.ngpio = S5PC100_GPIO_D_NR,
.label = "GPD",
},
}, {
.chip = {
.base = S5PC100_GPE0(0),
.ngpio = S5PC100_GPIO_E0_NR,
.label = "GPE0",
},
}, {
.chip = {
.base = S5PC100_GPE1(0),
.ngpio = S5PC100_GPIO_E1_NR,
.label = "GPE1",
},
}, {
.chip = {
.base = S5PC100_GPF0(0),
.ngpio = S5PC100_GPIO_F0_NR,
.label = "GPF0",
},
}, {
.chip = {
.base = S5PC100_GPF1(0),
.ngpio = S5PC100_GPIO_F1_NR,
.label = "GPF1",
},
}, {
.chip = {
.base = S5PC100_GPF2(0),
.ngpio = S5PC100_GPIO_F2_NR,
.label = "GPF2",
},
}, {
.chip = {
.base = S5PC100_GPF3(0),
.ngpio = S5PC100_GPIO_F3_NR,
.label = "GPF3",
},
}, {
.chip = {
.base = S5PC100_GPG0(0),
.ngpio = S5PC100_GPIO_G0_NR,
.label = "GPG0",
},
}, {
.chip = {
.base = S5PC100_GPG1(0),
.ngpio = S5PC100_GPIO_G1_NR,
.label = "GPG1",
},
}, {
.chip = {
.base = S5PC100_GPG2(0),
.ngpio = S5PC100_GPIO_G2_NR,
.label = "GPG2",
},
}, {
.chip = {
.base = S5PC100_GPG3(0),
.ngpio = S5PC100_GPIO_G3_NR,
.label = "GPG3",
},
}, {
.chip = {
.base = S5PC100_GPI(0),
.ngpio = S5PC100_GPIO_I_NR,
.label = "GPI",
},
}, {
.chip = {
.base = S5PC100_GPJ0(0),
.ngpio = S5PC100_GPIO_J0_NR,
.label = "GPJ0",
},
}, {
.chip = {
.base = S5PC100_GPJ1(0),
.ngpio = S5PC100_GPIO_J1_NR,
.label = "GPJ1",
},
}, {
.chip = {
.base = S5PC100_GPJ2(0),
.ngpio = S5PC100_GPIO_J2_NR,
.label = "GPJ2",
},
}, {
.chip = {
.base = S5PC100_GPJ3(0),
.ngpio = S5PC100_GPIO_J3_NR,
.label = "GPJ3",
},
}, {
.chip = {
.base = S5PC100_GPJ4(0),
.ngpio = S5PC100_GPIO_J4_NR,
.label = "GPJ4",
},
}, {
.config = &gpio_cfg_noint,
.chip = {
.base = S5PC100_GPK0(0),
.ngpio = S5PC100_GPIO_K0_NR,
.label = "GPK0",
},
}, {
.config = &gpio_cfg_noint,
.chip = {
.base = S5PC100_GPK1(0),
.ngpio = S5PC100_GPIO_K1_NR,
.label = "GPK1",
},
}, {
.config = &gpio_cfg_noint,
.chip = {
.base = S5PC100_GPK2(0),
.ngpio = S5PC100_GPIO_K2_NR,
.label = "GPK2",
},
}, {
.config = &gpio_cfg_noint,
.chip = {
.base = S5PC100_GPK3(0),
.ngpio = S5PC100_GPIO_K3_NR,
.label = "GPK3",
},
}, {
.config = &gpio_cfg_noint,
.chip = {
.base = S5PC100_GPL0(0),
.ngpio = S5PC100_GPIO_L0_NR,
.label = "GPL0",
},
}, {
.config = &gpio_cfg_noint,
.chip = {
.base = S5PC100_GPL1(0),
.ngpio = S5PC100_GPIO_L1_NR,
.label = "GPL1",
},
}, {
.config = &gpio_cfg_noint,
.chip = {
.base = S5PC100_GPL2(0),
.ngpio = S5PC100_GPIO_L2_NR,
.label = "GPL2",
},
}, {
.config = &gpio_cfg_noint,
.chip = {
.base = S5PC100_GPL3(0),
.ngpio = S5PC100_GPIO_L3_NR,
.label = "GPL3",
},
}, {
.config = &gpio_cfg_noint,
.chip = {
.base = S5PC100_GPL4(0),
.ngpio = S5PC100_GPIO_L4_NR,
.label = "GPL4",
},
}, {
.base = (S5P_VA_GPIO + 0xC00),
.config = &gpio_cfg_eint,
.irq_base = IRQ_EINT(0),
.chip = {
.base = S5PC100_GPH0(0),
.ngpio = S5PC100_GPIO_H0_NR,
.label = "GPH0",
.to_irq = samsung_gpiolib_to_irq,
},
}, {
.base = (S5P_VA_GPIO + 0xC20),
.config = &gpio_cfg_eint,
.irq_base = IRQ_EINT(8),
.chip = {
.base = S5PC100_GPH1(0),
.ngpio = S5PC100_GPIO_H1_NR,
.label = "GPH1",
.to_irq = samsung_gpiolib_to_irq,
},
}, {
.base = (S5P_VA_GPIO + 0xC40),
.config = &gpio_cfg_eint,
.irq_base = IRQ_EINT(16),
.chip = {
.base = S5PC100_GPH2(0),
.ngpio = S5PC100_GPIO_H2_NR,
.label = "GPH2",
.to_irq = samsung_gpiolib_to_irq,
},
}, {
.base = (S5P_VA_GPIO + 0xC60),
.config = &gpio_cfg_eint,
.irq_base = IRQ_EINT(24),
.chip = {
.base = S5PC100_GPH3(0),
.ngpio = S5PC100_GPIO_H3_NR,
.label = "GPH3",
.to_irq = samsung_gpiolib_to_irq,
},
},
};
static __init int s5pc100_gpiolib_init(void)
{
struct s3c_gpio_chip *chip = s5pc100_gpio_chips;
int nr_chips = ARRAY_SIZE(s5pc100_gpio_chips);
int gpioint_group = 0;
int i;
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 = S5PC100_BANK_BASE(i);
}
samsung_gpiolib_add_4bit_chips(s5pc100_gpio_chips, nr_chips);
s5p_register_gpioint_bank(IRQ_GPIOINT, 0, S5P_GPIOINT_GROUP_MAXNR);
return 0;
}
core_initcall(s5pc100_gpiolib_init);