105 lines
3 KiB
C
105 lines
3 KiB
C
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/* linux/arch/arm/plat-s5pc1xx/setup-sdhci-gpio.c
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*
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* Copyright (c) 2009-2010 Samsung Electronics Co., Ltd.
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* http://www.samsung.com/
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*
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* S5PV210 - Helper functions for setting up SDHCI device(s) GPIO (HSMMC)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <linux/platform_device.h>
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#include <linux/io.h>
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#include <linux/mmc/host.h>
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#include <linux/mmc/card.h>
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#include <mach/gpio.h>
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#include <plat/gpio-cfg.h>
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#include <plat/regs-sdhci.h>
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void s5pv210_setup_sdhci0_cfg_gpio(struct platform_device *dev, int width)
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{
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unsigned int gpio;
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/* Set all the necessary GPG0/GPG1 pins to special-function 2 */
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for (gpio = S5PV210_GPG0(0); gpio < S5PV210_GPG0(2); gpio++) {
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s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
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s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
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}
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switch (width) {
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case 8:
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/* GPG1[3:6] special-funtion 3 */
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for (gpio = S5PV210_GPG1(3); gpio <= S5PV210_GPG1(6); gpio++) {
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s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(3));
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s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
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}
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case 4:
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/* GPG0[3:6] special-funtion 2 */
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for (gpio = S5PV210_GPG0(3); gpio <= S5PV210_GPG0(6); gpio++) {
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s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
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s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
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}
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default:
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break;
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}
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s3c_gpio_setpull(S5PV210_GPG0(2), S3C_GPIO_PULL_UP);
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s3c_gpio_cfgpin(S5PV210_GPG0(2), S3C_GPIO_SFN(2));
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}
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void s5pv210_setup_sdhci1_cfg_gpio(struct platform_device *dev, int width)
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{
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unsigned int gpio;
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/* Set all the necessary GPG1[0:1] pins to special-function 2 */
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for (gpio = S5PV210_GPG1(0); gpio < S5PV210_GPG1(2); gpio++) {
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s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
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s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
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}
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/* Data pin GPG1[3:6] to special-function 2 */
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for (gpio = S5PV210_GPG1(3); gpio <= S5PV210_GPG1(6); gpio++) {
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s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
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s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
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}
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s3c_gpio_setpull(S5PV210_GPG1(2), S3C_GPIO_PULL_UP);
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s3c_gpio_cfgpin(S5PV210_GPG1(2), S3C_GPIO_SFN(2));
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}
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void s5pv210_setup_sdhci2_cfg_gpio(struct platform_device *dev, int width)
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{
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unsigned int gpio;
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/* Set all the necessary GPG2[0:1] pins to special-function 2 */
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for (gpio = S5PV210_GPG2(0); gpio < S5PV210_GPG2(2); gpio++) {
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s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
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s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
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}
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switch (width) {
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case 8:
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/* Data pin GPG3[3:6] to special-function 3 */
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for (gpio = S5PV210_GPG3(3); gpio <= S5PV210_GPG3(6); gpio++) {
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s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(3));
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s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
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}
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case 4:
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/* Data pin GPG2[3:6] to special-function 2 */
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for (gpio = S5PV210_GPG2(3); gpio <= S5PV210_GPG2(6); gpio++) {
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s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
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s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
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}
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default:
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break;
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}
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s3c_gpio_setpull(S5PV210_GPG2(2), S3C_GPIO_PULL_UP);
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s3c_gpio_cfgpin(S5PV210_GPG2(2), S3C_GPIO_SFN(2));
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}
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