aboutsummaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-s5pv310/setup-sdhci-gpio.c
diff options
context:
space:
mode:
authorHyuk Lee <hyuk1.lee@samsung.com>2010-10-05 22:09:42 -0400
committerKukjin Kim <kgene.kim@samsung.com>2010-10-25 03:02:20 -0400
commit193151142b736f25882f250b6db3b02efd2d3cab (patch)
treea7ea944f033523a48caf340387e31c065ce87080 /arch/arm/mach-s5pv310/setup-sdhci-gpio.c
parent2ad530d2e76f24cb8c13f88067cb57473a0af202 (diff)
ARM: S5PV310: Add support HSMMC and SDHCI configuration
This patch adds support HSMMC for S5PV310 and S5PC210 and setup for HSMMC host controller and also related GPIO. At most 4 channel can be used at the same time. A user can configure SDHCI data bus as 8bit or 4bit. Signed-off-by: Hyuk Lee <hyuk1.lee@samsung.com> Signed-off-by: Jeongbae Seo <jeongbae.seo@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Diffstat (limited to 'arch/arm/mach-s5pv310/setup-sdhci-gpio.c')
-rw-r--r--arch/arm/mach-s5pv310/setup-sdhci-gpio.c152
1 files changed, 152 insertions, 0 deletions
diff --git a/arch/arm/mach-s5pv310/setup-sdhci-gpio.c b/arch/arm/mach-s5pv310/setup-sdhci-gpio.c
new file mode 100644
index 000000000000..86d38cc49135
--- /dev/null
+++ b/arch/arm/mach-s5pv310/setup-sdhci-gpio.c
@@ -0,0 +1,152 @@
1/* linux/arch/arm/mach-s5pv310/setup-sdhci-gpio.c
2 *
3 * Copyright (c) 2010 Samsung Electronics Co., Ltd.
4 * http://www.samsung.com/
5 *
6 * S5PV310 - 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
26void s5pv310_setup_sdhci0_cfg_gpio(struct platform_device *dev, int width)
27{
28 struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
29 unsigned int gpio;
30
31 /* Set all the necessary GPK0[0:1] pins to special-function 2 */
32 for (gpio = S5PV310_GPK0(0); gpio < S5PV310_GPK0(2); gpio++) {
33 s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
34 s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
35 s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);
36 }
37
38 switch (width) {
39 case 8:
40 for (gpio = S5PV310_GPK1(3); gpio <= S5PV310_GPK1(6); gpio++) {
41 /* Data pin GPK1[3:6] to special-funtion 3 */
42 s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(3));
43 s3c_gpio_setpull(gpio, S3C_GPIO_PULL_UP);
44 s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);
45 }
46 case 4:
47 for (gpio = S5PV310_GPK0(3); gpio <= S5PV310_GPK0(6); gpio++) {
48 /* Data pin GPK0[3:6] to special-funtion 2 */
49 s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
50 s3c_gpio_setpull(gpio, S3C_GPIO_PULL_UP);
51 s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);
52 }
53 default:
54 break;
55 }
56
57 if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
58 s3c_gpio_cfgpin(S5PV310_GPK0(2), S3C_GPIO_SFN(2));
59 s3c_gpio_setpull(S5PV310_GPK0(2), S3C_GPIO_PULL_UP);
60 s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);
61 }
62}
63
64void s5pv310_setup_sdhci1_cfg_gpio(struct platform_device *dev, int width)
65{
66 struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
67 unsigned int gpio;
68
69 /* Set all the necessary GPK1[0:1] pins to special-function 2 */
70 for (gpio = S5PV310_GPK1(0); gpio < S5PV310_GPK1(2); gpio++) {
71 s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
72 s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
73 s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);
74 }
75
76 for (gpio = S5PV310_GPK1(3); gpio <= S5PV310_GPK1(6); gpio++) {
77 /* Data pin GPK1[3:6] to special-function 2 */
78 s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
79 s3c_gpio_setpull(gpio, S3C_GPIO_PULL_UP);
80 s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);
81 }
82
83 if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
84 s3c_gpio_cfgpin(S5PV310_GPK1(2), S3C_GPIO_SFN(2));
85 s3c_gpio_setpull(S5PV310_GPK1(2), S3C_GPIO_PULL_UP);
86 s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);
87 }
88}
89
90void s5pv310_setup_sdhci2_cfg_gpio(struct platform_device *dev, int width)
91{
92 struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
93 unsigned int gpio;
94
95 /* Set all the necessary GPK2[0:1] pins to special-function 2 */
96 for (gpio = S5PV310_GPK2(0); gpio < S5PV310_GPK2(2); gpio++) {
97 s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
98 s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
99 s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);
100 }
101
102 switch (width) {
103 case 8:
104 for (gpio = S5PV310_GPK3(3); gpio <= S5PV310_GPK3(6); gpio++) {
105 /* Data pin GPK3[3:6] to special-function 3 */
106 s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(3));
107 s3c_gpio_setpull(gpio, S3C_GPIO_PULL_UP);
108 s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);
109 }
110 case 4:
111 for (gpio = S5PV310_GPK2(3); gpio <= S5PV310_GPK2(6); gpio++) {
112 /* Data pin GPK2[3:6] to special-function 2 */
113 s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
114 s3c_gpio_setpull(gpio, S3C_GPIO_PULL_UP);
115 s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);
116 }
117 default:
118 break;
119 }
120
121 if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
122 s3c_gpio_cfgpin(S5PV310_GPK2(2), S3C_GPIO_SFN(2));
123 s3c_gpio_setpull(S5PV310_GPK2(2), S3C_GPIO_PULL_UP);
124 s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);
125 }
126}
127
128void s5pv310_setup_sdhci3_cfg_gpio(struct platform_device *dev, int width)
129{
130 struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
131 unsigned int gpio;
132
133 /* Set all the necessary GPK3[0:1] pins to special-function 2 */
134 for (gpio = S5PV310_GPK3(0); gpio < S5PV310_GPK3(2); gpio++) {
135 s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
136 s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
137 s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);
138 }
139
140 for (gpio = S5PV310_GPK3(3); gpio <= S5PV310_GPK3(6); gpio++) {
141 /* Data pin GPK3[3:6] to special-function 2 */
142 s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
143 s3c_gpio_setpull(gpio, S3C_GPIO_PULL_UP);
144 s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);
145 }
146
147 if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
148 s3c_gpio_cfgpin(S5PV310_GPK3(2), S3C_GPIO_SFN(2));
149 s3c_gpio_setpull(S5PV310_GPK3(2), S3C_GPIO_PULL_UP);
150 s5p_gpio_set_drvstr(gpio, S5P_GPIO_DRVSTR_LV4);
151 }
152}
generated by cgit v1.2.2 (git 2.25.0) at 2025-01-19 16:34:05 -0500