From 4faf6867638cc21aa43b4ca4ed0bdf14a2d29762 Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Wed, 25 Mar 2009 11:01:24 +0000 Subject: [ARM] S3C64XX: Add S3C6400 SDHCI setup support Add support for S3C6400 SDHCI channels 0 and 1, making the GPIO code common to both S3C6400 and S3C6410. Signed-off-by: Ben Dooks --- arch/arm/plat-s3c64xx/Kconfig | 5 +++ arch/arm/plat-s3c64xx/Makefile | 1 + arch/arm/plat-s3c64xx/setup-sdhci-gpio.c | 55 ++++++++++++++++++++++++++++++++ 3 files changed, 61 insertions(+) create mode 100644 arch/arm/plat-s3c64xx/setup-sdhci-gpio.c (limited to 'arch/arm/plat-s3c64xx') diff --git a/arch/arm/plat-s3c64xx/Kconfig b/arch/arm/plat-s3c64xx/Kconfig index ad48fd73e04..eb088db0e65 100644 --- a/arch/arm/plat-s3c64xx/Kconfig +++ b/arch/arm/plat-s3c64xx/Kconfig @@ -60,4 +60,9 @@ config S3C64XX_SETUP_FB_24BPP help Common setup code for S3C64XX with an 24bpp RGB display helper. +config S3C64XX_SETUP_SDHCI_GPIO + bool + help + Common setup code for S3C64XX SDHCI GPIO configurations + endif diff --git a/arch/arm/plat-s3c64xx/Makefile b/arch/arm/plat-s3c64xx/Makefile index 12ac7a50ab7..030050f5c76 100644 --- a/arch/arm/plat-s3c64xx/Makefile +++ b/arch/arm/plat-s3c64xx/Makefile @@ -35,3 +35,4 @@ obj-$(CONFIG_PM) += irq-pm.o obj-$(CONFIG_S3C64XX_SETUP_I2C0) += setup-i2c0.o obj-$(CONFIG_S3C64XX_SETUP_I2C1) += setup-i2c1.o obj-$(CONFIG_S3C64XX_SETUP_FB_24BPP) += setup-fb-24bpp.o +obj-$(CONFIG_S3C64XX_SETUP_SDHCI_GPIO) += setup-sdhci-gpio.o \ No newline at end of file diff --git a/arch/arm/plat-s3c64xx/setup-sdhci-gpio.c b/arch/arm/plat-s3c64xx/setup-sdhci-gpio.c new file mode 100644 index 00000000000..5417123b0ac --- /dev/null +++ b/arch/arm/plat-s3c64xx/setup-sdhci-gpio.c @@ -0,0 +1,55 @@ +/* linux/arch/arm/plat-s3c64xx/setup-sdhci-gpio.c + * + * Copyright 2008 Simtec Electronics + * Ben Dooks + * http://armlinux.simtec.co.uk/ + * + * S3C64XX - 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 +#include +#include +#include +#include + +#include +#include + +void s3c64xx_setup_sdhci0_cfg_gpio(struct platform_device *dev, int width) +{ + unsigned int gpio; + unsigned int end; + + end = S3C64XX_GPG(2 + width); + + /* Set all the necessary GPG pins to special-function 0 */ + for (gpio = S3C64XX_GPG(0); gpio < end; gpio++) { + s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2)); + s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE); + } + + s3c_gpio_setpull(S3C64XX_GPG(6), S3C_GPIO_PULL_UP); + s3c_gpio_cfgpin(S3C64XX_GPG(6), S3C_GPIO_SFN(2)); +} + +void s3c64xx_setup_sdhci1_cfg_gpio(struct platform_device *dev, int width) +{ + unsigned int gpio; + unsigned int end; + + end = S3C64XX_GPH(2 + width); + + /* Set all the necessary GPG pins to special-function 0 */ + for (gpio = S3C64XX_GPH(0); gpio < end; gpio++) { + s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2)); + s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE); + } + + s3c_gpio_setpull(S3C64XX_GPG(6), S3C_GPIO_PULL_UP); + s3c_gpio_cfgpin(S3C64XX_GPG(6), S3C_GPIO_SFN(3)); +} -- cgit v1.2.3-70-g09d2