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