1 // SPDX-License-Identifier: GPL-2.0
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 #include <linux/kernel.h>
10 #include <linux/types.h>
11 #include <linux/interrupt.h>
12 #include <linux/platform_device.h>
13 #include <linux/io.h>
14 #include <linux/gpio.h>
15
16 #include "gpio-cfg.h"
17 #include "sdhci.h"
18 #include "gpio-samsung.h"
19
s3c64xx_setup_sdhci0_cfg_gpio(struct platform_device * dev,int width)20 void s3c64xx_setup_sdhci0_cfg_gpio(struct platform_device *dev, int width)
21 {
22 struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
23
24 /* Set all the necessary GPG pins to special-function 2 */
25 s3c_gpio_cfgrange_nopull(S3C64XX_GPG(0), 2 + width, S3C_GPIO_SFN(2));
26
27 if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
28 s3c_gpio_setpull(S3C64XX_GPG(6), S3C_GPIO_PULL_UP);
29 s3c_gpio_cfgpin(S3C64XX_GPG(6), S3C_GPIO_SFN(2));
30 }
31 }
32
s3c64xx_setup_sdhci1_cfg_gpio(struct platform_device * dev,int width)33 void s3c64xx_setup_sdhci1_cfg_gpio(struct platform_device *dev, int width)
34 {
35 struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
36
37 /* Set all the necessary GPH pins to special-function 2 */
38 s3c_gpio_cfgrange_nopull(S3C64XX_GPH(0), 2 + width, S3C_GPIO_SFN(2));
39
40 if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
41 s3c_gpio_setpull(S3C64XX_GPG(6), S3C_GPIO_PULL_UP);
42 s3c_gpio_cfgpin(S3C64XX_GPG(6), S3C_GPIO_SFN(3));
43 }
44 }
45
s3c64xx_setup_sdhci2_cfg_gpio(struct platform_device * dev,int width)46 void s3c64xx_setup_sdhci2_cfg_gpio(struct platform_device *dev, int width)
47 {
48 /* Set all the necessary GPH pins to special-function 3 */
49 s3c_gpio_cfgrange_nopull(S3C64XX_GPH(6), width, S3C_GPIO_SFN(3));
50
51 /* Set all the necessary GPC pins to special-function 3 */
52 s3c_gpio_cfgrange_nopull(S3C64XX_GPC(4), 2, S3C_GPIO_SFN(3));
53 }
54