1 /* linux/arch/arm/plat-s5pc1xx/setup-sdhci-gpio.c
2 *
3 * Copyright (c) 2009-2010 Samsung Electronics Co., Ltd.
4 * http://www.samsung.com/
5 *
6 * S5PV210 - 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/kernel.h>
14 #include <linux/types.h>
15 #include <linux/interrupt.h>
16 #include <linux/platform_device.h>
17 #include <linux/io.h>
18 #include <linux/gpio.h>
19 #include <linux/mmc/host.h>
20 #include <linux/mmc/card.h>
21
22 #include <plat/gpio-cfg.h>
23 #include <plat/regs-sdhci.h>
24 #include <plat/sdhci.h>
25
s5pv210_setup_sdhci0_cfg_gpio(struct platform_device * dev,int width)26 void s5pv210_setup_sdhci0_cfg_gpio(struct platform_device *dev, int width)
27 {
28 struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
29
30 /* Set all the necessary GPG0/GPG1 pins to special-function 2 */
31 s3c_gpio_cfgrange_nopull(S5PV210_GPG0(0), 2, S3C_GPIO_SFN(2));
32
33 switch (width) {
34 case 8:
35 /* GPG1[3:6] special-function 3 */
36 s3c_gpio_cfgrange_nopull(S5PV210_GPG1(3), 4, S3C_GPIO_SFN(3));
37 case 4:
38 /* GPG0[3:6] special-function 2 */
39 s3c_gpio_cfgrange_nopull(S5PV210_GPG0(3), 4, S3C_GPIO_SFN(2));
40 default:
41 break;
42 }
43
44 if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
45 s3c_gpio_setpull(S5PV210_GPG0(2), S3C_GPIO_PULL_UP);
46 s3c_gpio_cfgpin(S5PV210_GPG0(2), S3C_GPIO_SFN(2));
47 }
48 }
49
s5pv210_setup_sdhci1_cfg_gpio(struct platform_device * dev,int width)50 void s5pv210_setup_sdhci1_cfg_gpio(struct platform_device *dev, int width)
51 {
52 struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
53
54 /* Set all the necessary GPG1[0:1] pins to special-function 2 */
55 s3c_gpio_cfgrange_nopull(S5PV210_GPG1(0), 2, S3C_GPIO_SFN(2));
56
57 /* Data pin GPG1[3:6] to special-function 2 */
58 s3c_gpio_cfgrange_nopull(S5PV210_GPG1(3), 4, S3C_GPIO_SFN(2));
59
60 if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
61 s3c_gpio_setpull(S5PV210_GPG1(2), S3C_GPIO_PULL_UP);
62 s3c_gpio_cfgpin(S5PV210_GPG1(2), S3C_GPIO_SFN(2));
63 }
64 }
65
s5pv210_setup_sdhci2_cfg_gpio(struct platform_device * dev,int width)66 void s5pv210_setup_sdhci2_cfg_gpio(struct platform_device *dev, int width)
67 {
68 struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
69
70 /* Set all the necessary GPG2[0:1] pins to special-function 2 */
71 s3c_gpio_cfgrange_nopull(S5PV210_GPG2(0), 2, S3C_GPIO_SFN(2));
72
73 switch (width) {
74 case 8:
75 /* Data pin GPG3[3:6] to special-function 3 */
76 s3c_gpio_cfgrange_nopull(S5PV210_GPG3(3), 4, S3C_GPIO_SFN(3));
77 case 4:
78 /* Data pin GPG2[3:6] to special-function 2 */
79 s3c_gpio_cfgrange_nopull(S5PV210_GPG2(3), 4, S3C_GPIO_SFN(2));
80 default:
81 break;
82 }
83
84 if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
85 s3c_gpio_setpull(S5PV210_GPG2(2), S3C_GPIO_PULL_UP);
86 s3c_gpio_cfgpin(S5PV210_GPG2(2), S3C_GPIO_SFN(2));
87 }
88 }
89
s5pv210_setup_sdhci3_cfg_gpio(struct platform_device * dev,int width)90 void s5pv210_setup_sdhci3_cfg_gpio(struct platform_device *dev, int width)
91 {
92 struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
93
94 /* Set all the necessary GPG3[0:1] pins to special-function 2 */
95 s3c_gpio_cfgrange_nopull(S5PV210_GPG3(0), 2, S3C_GPIO_SFN(2));
96
97 /* Data pin GPG3[3:6] to special-function 2 */
98 s3c_gpio_cfgrange_nopull(S5PV210_GPG3(3), 4, S3C_GPIO_SFN(2));
99
100 if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
101 s3c_gpio_setpull(S5PV210_GPG3(2), S3C_GPIO_PULL_UP);
102 s3c_gpio_cfgpin(S5PV210_GPG3(2), S3C_GPIO_SFN(2));
103 }
104 }
105