| Rajeshwari Shinde | ebc433c | 2011-12-26 16:28:54 +0900 | [diff] [blame] | 1 | /* linux/arch/arm/mach-s5p64x0/setup-sdhci-gpio.c |
| 2 | * |
| 3 | * Copyright (c) 2011 Samsung Electronics Co., Ltd. |
| 4 | * http://www.samsung.com/ |
| 5 | * |
| 6 | * S5P64X0 - Helper functions for setting up SDHCI device(s) GPIO (HSMMC) |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License version 2 as |
| 10 | * published by the Free Software Foundation. |
| 11 | */ |
| 12 | |
| 13 | #include <linux/platform_device.h> |
| 14 | #include <linux/io.h> |
| 15 | #include <linux/gpio.h> |
| 16 | |
| 17 | #include <mach/regs-gpio.h> |
| 18 | #include <mach/regs-clock.h> |
| 19 | |
| 20 | #include <plat/gpio-cfg.h> |
| 21 | #include <plat/sdhci.h> |
| 22 | #include <plat/cpu.h> |
| 23 | |
| 24 | void s5p64x0_setup_sdhci0_cfg_gpio(struct platform_device *dev, int width) |
| 25 | { |
| 26 | struct s3c_sdhci_platdata *pdata = dev->dev.platform_data; |
| 27 | |
| 28 | /* Set all the necessary GPG pins to special-function 2 */ |
| 29 | if (soc_is_s5p6450()) |
| 30 | s3c_gpio_cfgrange_nopull(S5P6450_GPG(0), 2 + width, |
| 31 | S3C_GPIO_SFN(2)); |
| 32 | else |
| 33 | s3c_gpio_cfgrange_nopull(S5P6440_GPG(0), 2 + width, |
| 34 | S3C_GPIO_SFN(2)); |
| 35 | |
| 36 | /* Set GPG[6] pin to special-function 2 - MMC0 CDn */ |
| 37 | if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) { |
| 38 | if (soc_is_s5p6450()) { |
| 39 | s3c_gpio_setpull(S5P6450_GPG(6), S3C_GPIO_PULL_UP); |
| 40 | s3c_gpio_cfgpin(S5P6450_GPG(6), S3C_GPIO_SFN(2)); |
| 41 | } else { |
| 42 | s3c_gpio_setpull(S5P6440_GPG(6), S3C_GPIO_PULL_UP); |
| 43 | s3c_gpio_cfgpin(S5P6440_GPG(6), S3C_GPIO_SFN(2)); |
| 44 | } |
| 45 | } |
| 46 | } |
| 47 | |
| 48 | void s5p64x0_setup_sdhci1_cfg_gpio(struct platform_device *dev, int width) |
| 49 | { |
| 50 | struct s3c_sdhci_platdata *pdata = dev->dev.platform_data; |
| 51 | |
| 52 | /* Set GPH[0:1] pins to special-function 2 - CLK and CMD */ |
| 53 | if (soc_is_s5p6450()) |
| 54 | s3c_gpio_cfgrange_nopull(S5P6450_GPH(0), 2, S3C_GPIO_SFN(2)); |
| 55 | else |
| 56 | s3c_gpio_cfgrange_nopull(S5P6440_GPH(0), 2 , S3C_GPIO_SFN(2)); |
| 57 | |
| 58 | switch (width) { |
| 59 | case 8: |
| 60 | /* Set data pins GPH[6:9] special-function 2 */ |
| 61 | if (soc_is_s5p6450()) |
| 62 | s3c_gpio_cfgrange_nopull(S5P6450_GPH(6), 4, |
| 63 | S3C_GPIO_SFN(2)); |
| 64 | else |
| 65 | s3c_gpio_cfgrange_nopull(S5P6440_GPH(6), 4, |
| 66 | S3C_GPIO_SFN(2)); |
| 67 | case 4: |
| 68 | /* set data pins GPH[2:5] special-function 2 */ |
| 69 | if (soc_is_s5p6450()) |
| 70 | s3c_gpio_cfgrange_nopull(S5P6450_GPH(2), 4, |
| 71 | S3C_GPIO_SFN(2)); |
| 72 | else |
| 73 | s3c_gpio_cfgrange_nopull(S5P6440_GPH(2), 4, |
| 74 | S3C_GPIO_SFN(2)); |
| 75 | default: |
| 76 | break; |
| 77 | } |
| 78 | |
| 79 | /* Set GPG[6] pin to special-funtion 3 : MMC1 CDn */ |
| 80 | if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) { |
| 81 | if (soc_is_s5p6450()) { |
| 82 | s3c_gpio_setpull(S5P6450_GPG(6), S3C_GPIO_PULL_UP); |
| 83 | s3c_gpio_cfgpin(S5P6450_GPG(6), S3C_GPIO_SFN(3)); |
| 84 | } else { |
| 85 | s3c_gpio_setpull(S5P6440_GPG(6), S3C_GPIO_PULL_UP); |
| 86 | s3c_gpio_cfgpin(S5P6440_GPG(6), S3C_GPIO_SFN(3)); |
| 87 | } |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | void s5p6440_setup_sdhci2_cfg_gpio(struct platform_device *dev, int width) |
| 92 | { |
| 93 | /* Set GPC[4:5] pins to special-function 3 - CLK and CMD */ |
| 94 | s3c_gpio_cfgrange_nopull(S5P6440_GPC(4), 2, S3C_GPIO_SFN(3)); |
| 95 | |
| 96 | /* Set data pins GPH[6:9] pins to special-function 3 */ |
| 97 | s3c_gpio_cfgrange_nopull(S5P6440_GPH(6), 4, S3C_GPIO_SFN(3)); |
| 98 | } |
| 99 | |
| 100 | void s5p6450_setup_sdhci2_cfg_gpio(struct platform_device *dev, int width) |
| 101 | { |
| 102 | /* Set all the necessary GPG pins to special-function 3 */ |
| 103 | s3c_gpio_cfgrange_nopull(S5P6450_GPG(7), 2 + width, S3C_GPIO_SFN(3)); |
| 104 | } |