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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/arch/arm/mach-exynos4/setup-sdhci-gpio.c
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/* linux/arch/arm/mach-exynos4/setup-sdhci-gpio.c

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 *

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 * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.

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 *		http://www.samsung.com

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 *

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 * EXYNOS4 - 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/gpio.h>

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#include <linux/mmc/host.h>

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#include <linux/mmc/card.h>

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#include <plat/gpio-cfg.h>

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#include <plat/regs-sdhci.h>

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#include <plat/sdhci.h>

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void exynos4_setup_sdhci0_cfg_gpio(struct platform_device *dev, int width)

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{

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	struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;

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	unsigned int gpio;

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	/* Set all the necessary GPK0[0:1] pins to special-function 2 */

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	for (gpio = EXYNOS4_GPK0(0); gpio < EXYNOS4_GPK0(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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		s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);

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	}

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	switch (width) {

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	case 8:

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		for (gpio = EXYNOS4_GPK1(3); gpio <= EXYNOS4_GPK1(6); gpio++) {

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			/* Data pin GPK1[3:6] to special-function 3 */

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			s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(3));

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			s3c_gpio_setpull(gpio, S3C_GPIO_PULL_UP);

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			s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);

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		}

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	case 4:

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		for (gpio = EXYNOS4_GPK0(3); gpio <= EXYNOS4_GPK0(6); gpio++) {

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			/* Data pin GPK0[3:6] to special-function 2 */

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			s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));

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			s3c_gpio_setpull(gpio, S3C_GPIO_PULL_UP);

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			s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);

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		}

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	default:

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		break;

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	}

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	if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {

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		s3c_gpio_cfgpin(EXYNOS4_GPK0(2), S3C_GPIO_SFN(2));

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		s3c_gpio_setpull(EXYNOS4_GPK0(2), S3C_GPIO_PULL_UP);

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		s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);

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	}

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}

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void exynos4_setup_sdhci1_cfg_gpio(struct platform_device *dev, int width)

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{

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	struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;

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	unsigned int gpio;

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	/* Set all the necessary GPK1[0:1] pins to special-function 2 */

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	for (gpio = EXYNOS4_GPK1(0); gpio < EXYNOS4_GPK1(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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		s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);

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	}

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	for (gpio = EXYNOS4_GPK1(3); gpio <= EXYNOS4_GPK1(6); gpio++) {

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		/* Data pin GPK1[3:6] to special-function 2 */

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		s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));

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		s3c_gpio_setpull(gpio, S3C_GPIO_PULL_UP);

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		s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);

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	}

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	if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {

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		s3c_gpio_cfgpin(EXYNOS4_GPK1(2), S3C_GPIO_SFN(2));

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		s3c_gpio_setpull(EXYNOS4_GPK1(2), S3C_GPIO_PULL_UP);

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		s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);

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	}

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}

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void exynos4_setup_sdhci2_cfg_gpio(struct platform_device *dev, int width)

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{

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	struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;

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	unsigned int gpio;

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	/* Set all the necessary GPK2[0:1] pins to special-function 2 */

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	for (gpio = EXYNOS4_GPK2(0); gpio < EXYNOS4_GPK2(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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		s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);

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	}

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	switch (width) {

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	case 8:

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		for (gpio = EXYNOS4_GPK3(3); gpio <= EXYNOS4_GPK3(6); gpio++) {

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			/* Data pin GPK3[3:6] to special-function 3 */

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			s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(3));

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			s3c_gpio_setpull(gpio, S3C_GPIO_PULL_UP);

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			s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);

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		}

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	case 4:

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		for (gpio = EXYNOS4_GPK2(3); gpio <= EXYNOS4_GPK2(6); gpio++) {

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			/* Data pin GPK2[3:6] to special-function 2 */

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			s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));

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			s3c_gpio_setpull(gpio, S3C_GPIO_PULL_UP);

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			s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);

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		}

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	default:

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		break;

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	}

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	if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {

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		s3c_gpio_cfgpin(EXYNOS4_GPK2(2), S3C_GPIO_SFN(2));

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		s3c_gpio_setpull(EXYNOS4_GPK2(2), S3C_GPIO_PULL_UP);

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		s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);

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	}

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}

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void exynos4_setup_sdhci3_cfg_gpio(struct platform_device *dev, int width)

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{

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	struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;

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	unsigned int gpio;

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	/* Set all the necessary GPK3[0:1] pins to special-function 2 */

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	for (gpio = EXYNOS4_GPK3(0); gpio < EXYNOS4_GPK3(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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		s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);

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	}

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	for (gpio = EXYNOS4_GPK3(3); gpio <= EXYNOS4_GPK3(6); gpio++) {

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		/* Data pin GPK3[3:6] to special-function 2 */

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		s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));

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		s3c_gpio_setpull(gpio, S3C_GPIO_PULL_UP);

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		s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);

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	}

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	if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {

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		s3c_gpio_cfgpin(EXYNOS4_GPK3(2), S3C_GPIO_SFN(2));

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		s3c_gpio_setpull(EXYNOS4_GPK3(2), S3C_GPIO_PULL_UP);

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		s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);

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	}

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}

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