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Marek Szyprowski2af716b2010-05-18 12:38:45 +02001/* linux/arch/arm/plat-s5pc100/setup-sdhci-gpio.c
Kyungmin Park86cd4f52009-11-17 08:41:23 +01002 *
3 * Copyright 2009 Samsung Eletronics
4 *
Marek Szyprowski2af716b2010-05-18 12:38:45 +02005 * S5PC100 - Helper functions for setting up SDHCI device(s) GPIO (HSMMC)
Kyungmin Park86cd4f52009-11-17 08:41:23 +01006 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10*/
11
12#include <linux/kernel.h>
13#include <linux/types.h>
14#include <linux/interrupt.h>
15#include <linux/platform_device.h>
16#include <linux/io.h>
17#include <linux/gpio.h>
18#include <linux/mmc/host.h>
19#include <linux/mmc/card.h>
20
21#include <plat/gpio-cfg.h>
22#include <plat/regs-sdhci.h>
23
24void s5pc100_setup_sdhci0_cfg_gpio(struct platform_device *dev, int width)
25{
26 unsigned int gpio;
27 unsigned int end;
28 unsigned int num;
29
30 num = width;
31 /* In case of 8 width, we should decrease the 2 */
32 if (width == 8)
33 num = width - 2;
34
35 end = S5PC100_GPG0(2 + num);
36
37 /* Set all the necessary GPG0/GPG1 pins to special-function 0 */
38 for (gpio = S5PC100_GPG0(0); gpio < end; gpio++) {
39 s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
40 s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
41 }
42
43 if (width == 8) {
44 for (gpio = S5PC100_GPG1(0); gpio <= S5PC100_GPG1(1); gpio++) {
45 s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
46 s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
47 }
48 }
49
50 s3c_gpio_setpull(S5PC100_GPG1(2), S3C_GPIO_PULL_UP);
51 s3c_gpio_cfgpin(S5PC100_GPG1(2), S3C_GPIO_SFN(2));
52}
53
54void s5pc100_setup_sdhci1_cfg_gpio(struct platform_device *dev, int width)
55{
56 unsigned int gpio;
57 unsigned int end;
58
59 end = S5PC100_GPG2(2 + width);
60
61 /* Set all the necessary GPG2 pins to special-function 2 */
62 for (gpio = S5PC100_GPG2(0); gpio < end; gpio++) {
63 s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
64 s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
65 }
66
67 s3c_gpio_setpull(S5PC100_GPG2(6), S3C_GPIO_PULL_UP);
68 s3c_gpio_cfgpin(S5PC100_GPG2(6), S3C_GPIO_SFN(2));
69}
70
71void s5pc100_setup_sdhci2_cfg_gpio(struct platform_device *dev, int width)
72{
73 unsigned int gpio;
74 unsigned int end;
75
76 end = S5PC100_GPG3(2 + width);
77
78 /* Set all the necessary GPG3 pins to special-function 2 */
79 for (gpio = S5PC100_GPG3(0); gpio < end; gpio++) {
80 s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
81 s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
82 }
83
84 s3c_gpio_setpull(S5PC100_GPG3(6), S3C_GPIO_PULL_UP);
85 s3c_gpio_cfgpin(S5PC100_GPG3(6), S3C_GPIO_SFN(2));
86}