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
s5p64x0_setup_sdhci0_cfg_gpio(struct platform_device * dev,int width)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
s5p64x0_setup_sdhci1_cfg_gpio(struct platform_device * dev,int width)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
s5p6440_setup_sdhci2_cfg_gpio(struct platform_device * dev,int width)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
s5p6450_setup_sdhci2_cfg_gpio(struct platform_device * dev,int width)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 }
105