summaryrefslogtreecommitdiff
path: root/arch/arm/mach-s3c64xx/setup-sdhci-gpio.c
blob: 138455af4937b8a29b7d400cff3e27dc831fee31 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
// SPDX-License-Identifier: GPL-2.0
//
// Copyright 2008 Simtec Electronics
//	Ben Dooks <ben@simtec.co.uk>
//	http://armlinux.simtec.co.uk/
//
// S3C64XX - Helper functions for setting up SDHCI device(s) GPIO (HSMMC)

#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/gpio.h>

#include <plat/gpio-cfg.h>
#include <plat/sdhci.h>
#include <mach/gpio-samsung.h>

void s3c64xx_setup_sdhci0_cfg_gpio(struct platform_device *dev, int width)
{
	struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;

	/* Set all the necessary GPG pins to special-function 2 */
	s3c_gpio_cfgrange_nopull(S3C64XX_GPG(0), 2 + width, S3C_GPIO_SFN(2));

	if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
		s3c_gpio_setpull(S3C64XX_GPG(6), S3C_GPIO_PULL_UP);
		s3c_gpio_cfgpin(S3C64XX_GPG(6), S3C_GPIO_SFN(2));
	}
}

void s3c64xx_setup_sdhci1_cfg_gpio(struct platform_device *dev, int width)
{
	struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;

	/* Set all the necessary GPH pins to special-function 2 */
	s3c_gpio_cfgrange_nopull(S3C64XX_GPH(0), 2 + width, S3C_GPIO_SFN(2));

	if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
		s3c_gpio_setpull(S3C64XX_GPG(6), S3C_GPIO_PULL_UP);
		s3c_gpio_cfgpin(S3C64XX_GPG(6), S3C_GPIO_SFN(3));
	}
}

void s3c64xx_setup_sdhci2_cfg_gpio(struct platform_device *dev, int width)
{
	/* Set all the necessary GPH pins to special-function 3 */
	s3c_gpio_cfgrange_nopull(S3C64XX_GPH(6), width, S3C_GPIO_SFN(3));

	/* Set all the necessary GPC pins to special-function 3 */
	s3c_gpio_cfgrange_nopull(S3C64XX_GPC(4), 2, S3C_GPIO_SFN(3));
}