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ARM: S5PV210: Add GPIOlib support

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This patch adds GPIOlib support for S5PV210.

Signed-off-by: Pannaga Bhushan <p.bhushan@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
This commit is contained in:
Pannaga Bhushan 2010-05-19 17:25:32 +09:00 committed by Ben Dooks
parent 1131379b48
commit ea5f507063
3 changed files with 277 additions and 4 deletions
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2
arch/arm/mach-s5pv210/Makefile
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@ -12,7 +12,7 @@ obj- :=
# Core support for S5PV210 system
obj-$(CONFIG_CPU_S5PV210) += cpu.o init.o clock.o
obj-$(CONFIG_CPU_S5PV210) += cpu.o init.o clock.o gpiolib.o
# machine support

261
arch/arm/mach-s5pv210/gpiolib.c Normal file
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@ -0,0 +1,261 @@
/* 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",
},
}, {
.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",
},
}, {
.base = (S5P_VA_GPIO + 0xC00),
.config = &gpio_cfg_noint,
.chip = {
.base = S5PV210_GPH0(0),
.ngpio = S5PV210_GPIO_H0_NR,
.label = "GPH0",
},
}, {
.base = (S5P_VA_GPIO + 0xC20),
.config = &gpio_cfg_noint,
.chip = {
.base = S5PV210_GPH1(0),
.ngpio = S5PV210_GPIO_H1_NR,
.label = "GPH1",
},
}, {
.base = (S5P_VA_GPIO + 0xC40),
.config = &gpio_cfg_noint,
.chip = {
.base = S5PV210_GPH2(0),
.ngpio = S5PV210_GPIO_H2_NR,
.label = "GPH2",
},
}, {
.base = (S5P_VA_GPIO + 0xC60),
.config = &gpio_cfg_noint,
.chip = {
.base = S5PV210_GPH3(0),
.ngpio = S5PV210_GPIO_H3_NR,
.label = "GPH3",
},
},
};
static __init int s5pv210_gpiolib_init(void)
{
struct s3c_gpio_chip *chip = s5pv210_gpio_4bit;
int nr_chips = ARRAY_SIZE(s5pv210_gpio_4bit);
int i = 0;
for (i = 0; i < nr_chips; i++, chip++) {
if (chip->config == NULL)
chip->config = &gpio_cfg;
if (chip->base == NULL)
chip->base = S5PV210_BANK_BASE(i);
}
samsung_gpiolib_add_4bit_chips(s5pv210_gpio_4bit, nr_chips);
return 0;
}
core_initcall(s5pv210_gpiolib_init);

18
arch/arm/mach-s5pv210/include/mach/gpio.h
View File

@ -18,6 +18,8 @@
#define gpio_cansleep __gpio_cansleep
#define gpio_to_irq __gpio_to_irq
/* Practically, GPIO banks upto MP03 are the configurable gpio banks */
/* GPIO bank sizes */
#define S5PV210_GPIO_A0_NR (8)
#define S5PV210_GPIO_A1_NR (4)
@ -47,6 +49,10 @@
#define S5PV210_GPIO_J3_NR (8)
#define S5PV210_GPIO_J4_NR (5)
#define S5PV210_GPIO_MP01_NR (8)
#define S5PV210_GPIO_MP02_NR (4)
#define S5PV210_GPIO_MP03_NR (8)
/* GPIO bank numbers */
/* CONFIG_S3C_GPIO_SPACE allows the user to select extra
@ -85,6 +91,9 @@ enum s5p_gpio_number {
S5PV210_GPIO_J2_START = S5PV210_GPIO_NEXT(S5PV210_GPIO_J1),
S5PV210_GPIO_J3_START = S5PV210_GPIO_NEXT(S5PV210_GPIO_J2),
S5PV210_GPIO_J4_START = S5PV210_GPIO_NEXT(S5PV210_GPIO_J3),
S5PV210_GPIO_MP01_START = S5PV210_GPIO_NEXT(S5PV210_GPIO_J4),
S5PV210_GPIO_MP02_START = S5PV210_GPIO_NEXT(S5PV210_GPIO_MP01),
S5PV210_GPIO_MP03_START = S5PV210_GPIO_NEXT(S5PV210_GPIO_MP02),
};
/* S5PV210 GPIO number definitions */
@ -115,13 +124,16 @@ enum s5p_gpio_number {
#define S5PV210_GPJ2(_nr) (S5PV210_GPIO_J2_START + (_nr))
#define S5PV210_GPJ3(_nr) (S5PV210_GPIO_J3_START + (_nr))
#define S5PV210_GPJ4(_nr) (S5PV210_GPIO_J4_START + (_nr))
#define S5PV210_MP01(_nr) (S5PV210_GPIO_MP01_START + (_nr))
#define S5PV210_MP02(_nr) (S5PV210_GPIO_MP02_START + (_nr))
#define S5PV210_MP03(_nr) (S5PV210_GPIO_MP03_START + (_nr))
/* the end of the S5PV210 specific gpios */
#define S5PV210_GPIO_END (S5PV210_GPJ4(S5PV210_GPIO_J4_NR) + 1)
#define S5PV210_GPIO_END (S5PV210_MP03(S5PV210_GPIO_MP03_NR) + 1)
#define S3C_GPIO_END S5PV210_GPIO_END
/* define the number of gpios we need to the one after the GPJ4() range */
#define ARCH_NR_GPIOS (S5PV210_GPJ4(S5PV210_GPIO_J4_NR) + \
/* define the number of gpios we need to the one after the MP03() range */
#define ARCH_NR_GPIOS (S5PV210_MP03(S5PV210_GPIO_MP03_NR) + \
CONFIG_SAMSUNG_GPIO_EXTRA + 1)
#include <asm-generic/gpio.h>