diff options
| -rw-r--r-- | arch/arm/plat-s5p/Kconfig | 1 | ||||
| -rw-r--r-- | arch/arm/plat-s5pc1xx/Kconfig | 2 | ||||
| -rw-r--r-- | arch/arm/plat-s5pc1xx/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm/plat-s5pc1xx/gpio-config.c | 62 | ||||
| -rw-r--r-- | arch/arm/plat-s5pc1xx/include/plat/gpio-cfg-s5pc1xx.h | 32 | ||||
| -rw-r--r-- | arch/arm/plat-s5pc1xx/setup-fb-24bpp.c | 1 | ||||
| -rw-r--r-- | arch/arm/plat-samsung/Kconfig | 12 | ||||
| -rw-r--r-- | arch/arm/plat-samsung/gpio-config.c | 48 | ||||
| -rw-r--r-- | arch/arm/plat-samsung/include/plat/gpio-cfg.h | 30 |
9 files changed, 86 insertions, 103 deletions
diff --git a/arch/arm/plat-s5p/Kconfig b/arch/arm/plat-s5p/Kconfig index d400a6a20fe4..92bd75607b43 100644 --- a/arch/arm/plat-s5p/Kconfig +++ b/arch/arm/plat-s5p/Kconfig @@ -13,6 +13,7 @@ config PLAT_S5P select NO_IOPORT select ARCH_REQUIRE_GPIOLIB select S3C_GPIO_TRACK + select S5P_GPIO_DRVSTR select SAMSUNG_GPIOLIB_4BIT select S3C_GPIO_CFG_S3C64XX select S3C_GPIO_PULL_UPDOWN diff --git a/arch/arm/plat-s5pc1xx/Kconfig b/arch/arm/plat-s5pc1xx/Kconfig index c7ccdf22eefa..79d3be721dde 100644 --- a/arch/arm/plat-s5pc1xx/Kconfig +++ b/arch/arm/plat-s5pc1xx/Kconfig @@ -16,9 +16,9 @@ config PLAT_S5PC1XX select SAMSUNG_IRQ_VIC_TIMER select S3C_GPIO_TRACK select S3C_GPIO_PULL_UPDOWN + select S5P_GPIO_DRVSTR 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 278f26806089..66a8f3eb7071 100644 --- a/arch/arm/plat-s5pc1xx/Makefile +++ b/arch/arm/plat-s5pc1xx/Makefile @@ -24,7 +24,6 @@ obj-$(CONFIG_CPU_S5PC100_CLOCK) += s5pc100-clock.o # Device setup -obj-$(CONFIG_S5P_GPIO_CFG_S5PC1XX) += gpio-config.o obj-$(CONFIG_S5PC1XX_SETUP_FB_24BPP) += setup-fb-24bpp.o obj-$(CONFIG_S5PC1XX_SETUP_I2C0) += setup-i2c0.o obj-$(CONFIG_S5PC1XX_SETUP_I2C1) += setup-i2c1.o diff --git a/arch/arm/plat-s5pc1xx/gpio-config.c b/arch/arm/plat-s5pc1xx/gpio-config.c deleted file mode 100644 index a4f67e80a150..000000000000 --- a/arch/arm/plat-s5pc1xx/gpio-config.c +++ /dev/null @@ -1,62 +0,0 @@ -/* 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 <plat/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/include/plat/gpio-cfg-s5pc1xx.h b/arch/arm/plat-s5pc1xx/include/plat/gpio-cfg-s5pc1xx.h deleted file mode 100644 index 72ad59f61efc..000000000000 --- a/arch/arm/plat-s5pc1xx/include/plat/gpio-cfg-s5pc1xx.h +++ /dev/null @@ -1,32 +0,0 @@ -/* 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/setup-fb-24bpp.c b/arch/arm/plat-s5pc1xx/setup-fb-24bpp.c index 1a63768a9a2e..b02c36fb10d1 100644 --- a/arch/arm/plat-s5pc1xx/setup-fb-24bpp.c +++ b/arch/arm/plat-s5pc1xx/setup-fb-24bpp.c @@ -19,7 +19,6 @@ #include <mach/map.h> #include <plat/fb.h> #include <plat/gpio-cfg.h> -#include <plat/gpio-cfg-s5pc1xx.h> #define DISR_OFFSET 0x7008 diff --git a/arch/arm/plat-samsung/Kconfig b/arch/arm/plat-samsung/Kconfig index c91c21ac5fcb..711d5a4cce58 100644 --- a/arch/arm/plat-samsung/Kconfig +++ b/arch/arm/plat-samsung/Kconfig @@ -90,12 +90,6 @@ 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. - config S3C_GPIO_PULL_UPDOWN bool help @@ -111,6 +105,12 @@ config S3C_GPIO_PULL_UP help Internal configuration to enable the correct GPIO pull helper +config S5P_GPIO_DRVSTR + bool + help + Internal configuration to get and set correct GPIO driver strength + helper + config SAMSUNG_GPIO_EXTRA int "Number of additional GPIO pins" default 0 diff --git a/arch/arm/plat-samsung/gpio-config.c b/arch/arm/plat-samsung/gpio-config.c index a76eef533392..57b68a50f45e 100644 --- a/arch/arm/plat-samsung/gpio-config.c +++ b/arch/arm/plat-samsung/gpio-config.c @@ -261,3 +261,51 @@ s3c_gpio_pull_t s3c_gpio_getpull_1up(struct s3c_gpio_chip *chip, } #endif /* CONFIG_S3C_GPIO_PULL_UP */ +#ifdef CONFIG_S5P_GPIO_DRVSTR +s5p_gpio_drvstr_t s5p_gpio_get_drvstr(unsigned int pin) +{ + struct s3c_gpio_chip *chip = s3c_gpiolib_getchip(pin); + unsigned int off; + void __iomem *reg; + int shift; + u32 drvstr; + + if (!chip) + return -EINVAL; + + off = chip->chip.base - pin; + shift = off * 2; + 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, s5p_gpio_drvstr_t drvstr) +{ + struct s3c_gpio_chip *chip = s3c_gpiolib_getchip(pin); + unsigned int off; + void __iomem *reg; + int shift; + u32 tmp; + + if (!chip) + return -EINVAL; + + off = chip->chip.base - pin; + shift = off * 2; + reg = chip->base + 0x0C; + + tmp = __raw_readl(reg); + tmp |= drvstr << shift; + + __raw_writel(tmp, reg); + + return 0; +} +EXPORT_SYMBOL(s5p_gpio_set_drvstr); +#endif /* CONFIG_S5P_GPIO_DRVSTR */ diff --git a/arch/arm/plat-samsung/include/plat/gpio-cfg.h b/arch/arm/plat-samsung/include/plat/gpio-cfg.h index 8d01e853df39..34efdd2b032c 100644 --- a/arch/arm/plat-samsung/include/plat/gpio-cfg.h +++ b/arch/arm/plat-samsung/include/plat/gpio-cfg.h @@ -25,6 +25,7 @@ #define __PLAT_GPIO_CFG_H __FILE__ typedef unsigned int __bitwise__ s3c_gpio_pull_t; +typedef unsigned int __bitwise__ s5p_gpio_drvstr_t; /* forward declaration if gpio-core.h hasn't been included */ struct s3c_gpio_chip; @@ -118,4 +119,33 @@ extern int s3c_gpio_setpull(unsigned int pin, s3c_gpio_pull_t pull); */ extern s3c_gpio_pull_t s3c_gpio_getpull(unsigned int pin); +/* Define values for the drvstr available for each gpio pin. + * + * These values control the value of the output signal driver strength, + * configurable on most pins on the S5C series. + */ +#define S5P_GPIO_DRVSTR_LV1 ((__force s5p_gpio_drvstr_t)0x00) +#define S5P_GPIO_DRVSTR_LV2 ((__force s5p_gpio_drvstr_t)0x01) +#define S5P_GPIO_DRVSTR_LV3 ((__force s5p_gpio_drvstr_t)0x10) +#define S5P_GPIO_DRVSTR_LV4 ((__force s5p_gpio_drvstr_t)0x11) + +/** + * s5c_gpio_get_drvstr() - get the driver streght value of a gpio pin + * @pin: The pin number to get the settings for + * + * Read the driver streght value for the specified pin. +*/ +extern s5p_gpio_drvstr_t s5p_gpio_get_drvstr(unsigned int pin); + +/** + * s3c_gpio_set_drvstr() - set the driver streght value of a gpio pin + * @pin: The pin number to configure the driver streght value + * @drvstr: The new value of the driver strength + * + * This function sets the driver strength value for the specified pin. + * It will return 0 if successfull, or a negative error code if the pin + * cannot support the requested setting. +*/ +extern int s5p_gpio_set_drvstr(unsigned int pin, s5p_gpio_drvstr_t drvstr); + #endif /* __PLAT_GPIO_CFG_H */ |