diff options
Diffstat (limited to 'arch/arm/mach-exynos4/setup-sdhci-gpio.c')
| -rw-r--r-- | arch/arm/mach-exynos4/setup-sdhci-gpio.c | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/arch/arm/mach-exynos4/setup-sdhci-gpio.c b/arch/arm/mach-exynos4/setup-sdhci-gpio.c new file mode 100644 index 00000000000..1b3d3a2de95 --- /dev/null +++ b/arch/arm/mach-exynos4/setup-sdhci-gpio.c @@ -0,0 +1,152 @@ +/* linux/arch/arm/mach-exynos4/setup-sdhci-gpio.c + * + * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * EXYNOS4 - Helper functions for setting up SDHCI device(s) GPIO (HSMMC) + * + * 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/types.h> +#include <linux/interrupt.h> +#include <linux/platform_device.h> +#include <linux/io.h> +#include <linux/gpio.h> +#include <linux/mmc/host.h> +#include <linux/mmc/card.h> + +#include <plat/gpio-cfg.h> +#include <plat/regs-sdhci.h> +#include <plat/sdhci.h> + +void exynos4_setup_sdhci0_cfg_gpio(struct platform_device *dev, int width) +{ + struct s3c_sdhci_platdata *pdata = dev->dev.platform_data; + unsigned int gpio; + + /* Set all the necessary GPK0[0:1] pins to special-function 2 */ + for (gpio = EXYNOS4_GPK0(0); gpio < EXYNOS4_GPK0(2); gpio++) { + s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2)); + s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE); + s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4); + } + + switch (width) { + case 8: + for (gpio = EXYNOS4_GPK1(3); gpio <= EXYNOS4_GPK1(6); gpio++) { + /* Data pin GPK1[3:6] to special-funtion 3 */ + s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(3)); + s3c_gpio_setpull(gpio, S3C_GPIO_PULL_UP); + s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4); + } + case 4: + for (gpio = EXYNOS4_GPK0(3); gpio <= EXYNOS4_GPK0(6); gpio++) { + /* Data pin GPK0[3:6] to special-funtion 2 */ + s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2)); + s3c_gpio_setpull(gpio, S3C_GPIO_PULL_UP); + s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4); + } + default: + break; + } + + if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) { + s3c_gpio_cfgpin(EXYNOS4_GPK0(2), S3C_GPIO_SFN(2)); + s3c_gpio_setpull(EXYNOS4_GPK0(2), S3C_GPIO_PULL_UP); + s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4); + } +} + +void exynos4_setup_sdhci1_cfg_gpio(struct platform_device *dev, int width) +{ + struct s3c_sdhci_platdata *pdata = dev->dev.platform_data; + unsigned int gpio; + + /* Set all the necessary GPK1[0:1] pins to special-function 2 */ + for (gpio = EXYNOS4_GPK1(0); gpio < EXYNOS4_GPK1(2); gpio++) { + s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2)); + s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE); + s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4); + } + + for (gpio = EXYNOS4_GPK1(3); gpio <= EXYNOS4_GPK1(6); gpio++) { + /* Data pin GPK1[3:6] to special-function 2 */ + s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2)); + s3c_gpio_setpull(gpio, S3C_GPIO_PULL_UP); + s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4); + } + + if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) { + s3c_gpio_cfgpin(EXYNOS4_GPK1(2), S3C_GPIO_SFN(2)); + s3c_gpio_setpull(EXYNOS4_GPK1(2), S3C_GPIO_PULL_UP); + s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4); + } +} + +void exynos4_setup_sdhci2_cfg_gpio(struct platform_device *dev, int width) +{ + struct s3c_sdhci_platdata *pdata = dev->dev.platform_data; + unsigned int gpio; + + /* Set all the necessary GPK2[0:1] pins to special-function 2 */ + for (gpio = EXYNOS4_GPK2(0); gpio < EXYNOS4_GPK2(2); gpio++) { + s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2)); + s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE); + s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4); + } + + switch (width) { + case 8: + for (gpio = EXYNOS4_GPK3(3); gpio <= EXYNOS4_GPK3(6); gpio++) { + /* Data pin GPK3[3:6] to special-function 3 */ + s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(3)); + s3c_gpio_setpull(gpio, S3C_GPIO_PULL_UP); + s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4); + } + case 4: + for (gpio = EXYNOS4_GPK2(3); gpio <= EXYNOS4_GPK2(6); gpio++) { + /* Data pin GPK2[3:6] to special-function 2 */ + s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2)); + s3c_gpio_setpull(gpio, S3C_GPIO_PULL_UP); + s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4); + } + default: + break; + } + + if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) { + s3c_gpio_cfgpin(EXYNOS4_GPK2(2), S3C_GPIO_SFN(2)); + s3c_gpio_setpull(EXYNOS4_GPK2(2), S3C_GPIO_PULL_UP); + s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4); + } +} + +void exynos4_setup_sdhci3_cfg_gpio(struct platform_device *dev, int width) +{ + struct s3c_sdhci_platdata *pdata = dev->dev.platform_data; + unsigned int gpio; + + /* Set all the necessary GPK3[0:1] pins to special-function 2 */ + for (gpio = EXYNOS4_GPK3(0); gpio < EXYNOS4_GPK3(2); gpio++) { + s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2)); + s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE); + s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4); + } + + for (gpio = EXYNOS4_GPK3(3); gpio <= EXYNOS4_GPK3(6); gpio++) { + /* Data pin GPK3[3:6] to special-function 2 */ + s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2)); + s3c_gpio_setpull(gpio, S3C_GPIO_PULL_UP); + s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4); + } + + if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) { + s3c_gpio_cfgpin(EXYNOS4_GPK3(2), S3C_GPIO_SFN(2)); + s3c_gpio_setpull(EXYNOS4_GPK3(2), S3C_GPIO_PULL_UP); + s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4); + } +} |