setup-sdhci-gpio.c
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/* linux/arch/arm/mach-s5p64x0/setup-sdhci-gpio.c
*
* Copyright (c) 2011 Samsung Electronics Co., Ltd.
* http://www.samsung.com/
*
* S5P64X0 - 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/platform_device.h>
#include <linux/io.h>
#include <linux/gpio.h>
#include <mach/regs-gpio.h>
#include <mach/regs-clock.h>
#include <plat/gpio-cfg.h>
#include <plat/sdhci.h>
#include <plat/cpu.h>
void s5p64x0_setup_sdhci0_cfg_gpio(struct platform_device *dev, int width)
{
struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
/* Set all the necessary GPG pins to special-function 2 */
if (soc_is_s5p6450())
s3c_gpio_cfgrange_nopull(S5P6450_GPG(0), 2 + width,
S3C_GPIO_SFN(2));
else
s3c_gpio_cfgrange_nopull(S5P6440_GPG(0), 2 + width,
S3C_GPIO_SFN(2));
/* Set GPG[6] pin to special-function 2 - MMC0 CDn */
if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
if (soc_is_s5p6450()) {
s3c_gpio_setpull(S5P6450_GPG(6), S3C_GPIO_PULL_UP);
s3c_gpio_cfgpin(S5P6450_GPG(6), S3C_GPIO_SFN(2));
} else {
s3c_gpio_setpull(S5P6440_GPG(6), S3C_GPIO_PULL_UP);
s3c_gpio_cfgpin(S5P6440_GPG(6), S3C_GPIO_SFN(2));
}
}
}
void s5p64x0_setup_sdhci1_cfg_gpio(struct platform_device *dev, int width)
{
struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
/* Set GPH[0:1] pins to special-function 2 - CLK and CMD */
if (soc_is_s5p6450())
s3c_gpio_cfgrange_nopull(S5P6450_GPH(0), 2, S3C_GPIO_SFN(2));
else
s3c_gpio_cfgrange_nopull(S5P6440_GPH(0), 2 , S3C_GPIO_SFN(2));
switch (width) {
case 8:
/* Set data pins GPH[6:9] special-function 2 */
if (soc_is_s5p6450())
s3c_gpio_cfgrange_nopull(S5P6450_GPH(6), 4,
S3C_GPIO_SFN(2));
else
s3c_gpio_cfgrange_nopull(S5P6440_GPH(6), 4,
S3C_GPIO_SFN(2));
case 4:
/* set data pins GPH[2:5] special-function 2 */
if (soc_is_s5p6450())
s3c_gpio_cfgrange_nopull(S5P6450_GPH(2), 4,
S3C_GPIO_SFN(2));
else
s3c_gpio_cfgrange_nopull(S5P6440_GPH(2), 4,
S3C_GPIO_SFN(2));
default:
break;
}
/* Set GPG[6] pin to special-funtion 3 : MMC1 CDn */
if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
if (soc_is_s5p6450()) {
s3c_gpio_setpull(S5P6450_GPG(6), S3C_GPIO_PULL_UP);
s3c_gpio_cfgpin(S5P6450_GPG(6), S3C_GPIO_SFN(3));
} else {
s3c_gpio_setpull(S5P6440_GPG(6), S3C_GPIO_PULL_UP);
s3c_gpio_cfgpin(S5P6440_GPG(6), S3C_GPIO_SFN(3));
}
}
}
void s5p6440_setup_sdhci2_cfg_gpio(struct platform_device *dev, int width)
{
/* Set GPC[4:5] pins to special-function 3 - CLK and CMD */
s3c_gpio_cfgrange_nopull(S5P6440_GPC(4), 2, S3C_GPIO_SFN(3));
/* Set data pins GPH[6:9] pins to special-function 3 */
s3c_gpio_cfgrange_nopull(S5P6440_GPH(6), 4, S3C_GPIO_SFN(3));
}
void s5p6450_setup_sdhci2_cfg_gpio(struct platform_device *dev, int width)
{
/* Set all the necessary GPG pins to special-function 3 */
s3c_gpio_cfgrange_nopull(S5P6450_GPG(7), 2 + width, S3C_GPIO_SFN(3));
}