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ebc433c289
Adds support for HSMMC for S5P64X0 platform, performs setup for host controller and related GPIO. Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
105 lines
3.1 KiB
C
105 lines
3.1 KiB
C
/* linux/arch/arm/mach-s5p64x0/setup-sdhci-gpio.c
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*
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* Copyright (c) 2011 Samsung Electronics Co., Ltd.
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* http://www.samsung.com/
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*
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* S5P64X0 - 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/platform_device.h>
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#include <linux/io.h>
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#include <linux/gpio.h>
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#include <mach/regs-gpio.h>
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#include <mach/regs-clock.h>
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#include <plat/gpio-cfg.h>
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#include <plat/sdhci.h>
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#include <plat/cpu.h>
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void s5p64x0_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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/* Set all the necessary GPG pins to special-function 2 */
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if (soc_is_s5p6450())
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s3c_gpio_cfgrange_nopull(S5P6450_GPG(0), 2 + width,
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S3C_GPIO_SFN(2));
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else
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s3c_gpio_cfgrange_nopull(S5P6440_GPG(0), 2 + width,
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S3C_GPIO_SFN(2));
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/* Set GPG[6] pin to special-function 2 - MMC0 CDn */
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if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
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if (soc_is_s5p6450()) {
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s3c_gpio_setpull(S5P6450_GPG(6), S3C_GPIO_PULL_UP);
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s3c_gpio_cfgpin(S5P6450_GPG(6), S3C_GPIO_SFN(2));
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} else {
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s3c_gpio_setpull(S5P6440_GPG(6), S3C_GPIO_PULL_UP);
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s3c_gpio_cfgpin(S5P6440_GPG(6), S3C_GPIO_SFN(2));
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}
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}
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}
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void s5p64x0_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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/* Set GPH[0:1] pins to special-function 2 - CLK and CMD */
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if (soc_is_s5p6450())
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s3c_gpio_cfgrange_nopull(S5P6450_GPH(0), 2, S3C_GPIO_SFN(2));
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else
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s3c_gpio_cfgrange_nopull(S5P6440_GPH(0), 2 , S3C_GPIO_SFN(2));
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switch (width) {
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case 8:
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/* Set data pins GPH[6:9] special-function 2 */
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if (soc_is_s5p6450())
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s3c_gpio_cfgrange_nopull(S5P6450_GPH(6), 4,
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S3C_GPIO_SFN(2));
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else
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s3c_gpio_cfgrange_nopull(S5P6440_GPH(6), 4,
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S3C_GPIO_SFN(2));
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case 4:
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/* set data pins GPH[2:5] special-function 2 */
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if (soc_is_s5p6450())
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s3c_gpio_cfgrange_nopull(S5P6450_GPH(2), 4,
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S3C_GPIO_SFN(2));
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else
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s3c_gpio_cfgrange_nopull(S5P6440_GPH(2), 4,
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S3C_GPIO_SFN(2));
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default:
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break;
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}
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/* Set GPG[6] pin to special-funtion 3 : MMC1 CDn */
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if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
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if (soc_is_s5p6450()) {
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s3c_gpio_setpull(S5P6450_GPG(6), S3C_GPIO_PULL_UP);
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s3c_gpio_cfgpin(S5P6450_GPG(6), S3C_GPIO_SFN(3));
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} else {
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s3c_gpio_setpull(S5P6440_GPG(6), S3C_GPIO_PULL_UP);
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s3c_gpio_cfgpin(S5P6440_GPG(6), S3C_GPIO_SFN(3));
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}
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}
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}
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void s5p6440_setup_sdhci2_cfg_gpio(struct platform_device *dev, int width)
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{
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/* Set GPC[4:5] pins to special-function 3 - CLK and CMD */
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s3c_gpio_cfgrange_nopull(S5P6440_GPC(4), 2, S3C_GPIO_SFN(3));
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/* Set data pins GPH[6:9] pins to special-function 3 */
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s3c_gpio_cfgrange_nopull(S5P6440_GPH(6), 4, S3C_GPIO_SFN(3));
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}
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void s5p6450_setup_sdhci2_cfg_gpio(struct platform_device *dev, int width)
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{
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/* Set all the necessary GPG pins to special-function 3 */
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s3c_gpio_cfgrange_nopull(S5P6450_GPG(7), 2 + width, S3C_GPIO_SFN(3));
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}
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