86cd4f5f83
Samsung S5PC100 has 3 SDHCI controllers compatible with the one known from previous SoCs series. Add required platform setup and support code that the devices can be used with sdhci-s3c driver. Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
87 lines
2.3 KiB
C
87 lines
2.3 KiB
C
/* linux/arch/arm/plat-s5pc1xx/setup-sdhci-gpio.c
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*
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* Copyright 2009 Samsung Eletronics
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*
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* S5PC1XX - 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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void s5pc100_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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unsigned int end;
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unsigned int num;
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num = width;
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/* In case of 8 width, we should decrease the 2 */
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if (width == 8)
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num = width - 2;
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end = S5PC100_GPG0(2 + num);
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/* Set all the necessary GPG0/GPG1 pins to special-function 0 */
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for (gpio = S5PC100_GPG0(0); gpio < end; 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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if (width == 8) {
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for (gpio = S5PC100_GPG1(0); gpio <= S5PC100_GPG1(1); 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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}
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s3c_gpio_setpull(S5PC100_GPG1(2), S3C_GPIO_PULL_UP);
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s3c_gpio_cfgpin(S5PC100_GPG1(2), S3C_GPIO_SFN(2));
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}
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void s5pc100_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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unsigned int end;
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end = S5PC100_GPG2(2 + width);
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/* Set all the necessary GPG2 pins to special-function 2 */
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for (gpio = S5PC100_GPG2(0); gpio < end; 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(S5PC100_GPG2(6), S3C_GPIO_PULL_UP);
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s3c_gpio_cfgpin(S5PC100_GPG2(6), S3C_GPIO_SFN(2));
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}
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void s5pc100_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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unsigned int end;
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end = S5PC100_GPG3(2 + width);
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/* Set all the necessary GPG3 pins to special-function 2 */
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for (gpio = S5PC100_GPG3(0); gpio < end; 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(S5PC100_GPG3(6), S3C_GPIO_PULL_UP);
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s3c_gpio_cfgpin(S5PC100_GPG3(6), S3C_GPIO_SFN(2));
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}
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