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ARM: S5P64X0: Add HSMMC setup for host Controller
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>
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Rajeshwari Shinde
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Kukjin Kim
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Dec 26, 2011
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,104 @@ | ||
| /* 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> | ||
|
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| 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; | ||
|
|
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| /* 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)); | ||
| } | ||
| } | ||
| } | ||
|
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||
| 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)); | ||
|
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| /* Set data pins GPH[6:9] pins to special-function 3 */ | ||
| s3c_gpio_cfgrange_nopull(S5P6440_GPH(6), 4, S3C_GPIO_SFN(3)); | ||
| } | ||
|
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||
| 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)); | ||
| } |
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