1 /* linux/arch/arm/plat-s5pc100/setup-sdhci-gpio.c
2 *
3 * Copyright 2009 Samsung Eletronics
4 *
5 * S5PC100 - Helper functions for setting up SDHCI device(s) GPIO (HSMMC)
6 *
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 #include <plat/sdhci.h>
24
s5pc100_setup_sdhci0_cfg_gpio(struct platform_device * dev,int width)25 void s5pc100_setup_sdhci0_cfg_gpio(struct platform_device *dev, int width)
26 {
27 struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
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 /* Set all the necessary GPG0/GPG1 pins to special-function 0 */
36 s3c_gpio_cfgrange_nopull(S5PC100_GPG0(0), 2 + num, S3C_GPIO_SFN(2));
37
38 if (width == 8)
39 s3c_gpio_cfgrange_nopull(S5PC100_GPG1(0), 2, S3C_GPIO_SFN(2));
40
41 if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
42 s3c_gpio_setpull(S5PC100_GPG1(2), S3C_GPIO_PULL_UP);
43 s3c_gpio_cfgpin(S5PC100_GPG1(2), S3C_GPIO_SFN(2));
44 }
45 }
46
s5pc100_setup_sdhci1_cfg_gpio(struct platform_device * dev,int width)47 void s5pc100_setup_sdhci1_cfg_gpio(struct platform_device *dev, int width)
48 {
49 struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
50
51 /* Set all the necessary GPG2 pins to special-function 2 */
52 s3c_gpio_cfgrange_nopull(S5PC100_GPG2(0), 2 + width, S3C_GPIO_SFN(2));
53
54 if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
55 s3c_gpio_setpull(S5PC100_GPG2(6), S3C_GPIO_PULL_UP);
56 s3c_gpio_cfgpin(S5PC100_GPG2(6), S3C_GPIO_SFN(2));
57 }
58 }
59
s5pc100_setup_sdhci2_cfg_gpio(struct platform_device * dev,int width)60 void s5pc100_setup_sdhci2_cfg_gpio(struct platform_device *dev, int width)
61 {
62 struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
63
64 /* Set all the necessary GPG3 pins to special-function 2 */
65 s3c_gpio_cfgrange_nopull(S5PC100_GPG3(0), 2 + width, S3C_GPIO_SFN(2));
66
67 if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
68 s3c_gpio_setpull(S5PC100_GPG3(6), S3C_GPIO_PULL_UP);
69 s3c_gpio_cfgpin(S5PC100_GPG3(6), S3C_GPIO_SFN(2));
70 }
71 }
72