1 /* linux/arch/arm/plat-s3c64xx/setup-sdhci-gpio.c
2 *
3 * Copyright 2008 Simtec Electronics
4 * Ben Dooks <ben@simtec.co.uk>
5 * http://armlinux.simtec.co.uk/
6 *
7 * S3C64XX - Helper functions for setting up SDHCI device(s) GPIO (HSMMC)
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 */
13
14 #include <linux/kernel.h>
15 #include <linux/types.h>
16 #include <linux/interrupt.h>
17 #include <linux/platform_device.h>
18 #include <linux/io.h>
19 #include <linux/gpio.h>
20
21 #include <plat/gpio-cfg.h>
22 #include <plat/sdhci.h>
23
s3c64xx_setup_sdhci0_cfg_gpio(struct platform_device * dev,int width)24 void s3c64xx_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 s3c_gpio_cfgrange_nopull(S3C64XX_GPG(0), 2 + width, S3C_GPIO_SFN(2));
30
31 if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
32 s3c_gpio_setpull(S3C64XX_GPG(6), S3C_GPIO_PULL_UP);
33 s3c_gpio_cfgpin(S3C64XX_GPG(6), S3C_GPIO_SFN(2));
34 }
35 }
36
s3c64xx_setup_sdhci1_cfg_gpio(struct platform_device * dev,int width)37 void s3c64xx_setup_sdhci1_cfg_gpio(struct platform_device *dev, int width)
38 {
39 struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
40
41 /* Set all the necessary GPH pins to special-function 2 */
42 s3c_gpio_cfgrange_nopull(S3C64XX_GPH(0), 2 + width, S3C_GPIO_SFN(2));
43
44 if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
45 s3c_gpio_setpull(S3C64XX_GPG(6), S3C_GPIO_PULL_UP);
46 s3c_gpio_cfgpin(S3C64XX_GPG(6), S3C_GPIO_SFN(3));
47 }
48 }
49
s3c64xx_setup_sdhci2_cfg_gpio(struct platform_device * dev,int width)50 void s3c64xx_setup_sdhci2_cfg_gpio(struct platform_device *dev, int width)
51 {
52 /* Set all the necessary GPH pins to special-function 3 */
53 s3c_gpio_cfgrange_nopull(S3C64XX_GPH(6), width, S3C_GPIO_SFN(3));
54
55 /* Set all the necessary GPC pins to special-function 3 */
56 s3c_gpio_cfgrange_nopull(S3C64XX_GPC(4), 2, S3C_GPIO_SFN(3));
57 }
58