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arch
arm
mach-s5p64x0
setup-sdhci-gpio.c
Go to the documentation of this file.
1
/* linux/arch/arm/mach-s5p64x0/setup-sdhci-gpio.c
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*
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* Copyright (c) 2011 Samsung Electronics Co., Ltd.
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* http://www.samsung.com/
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*
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* S5P64X0 - Helper functions for setting up SDHCI device(s) GPIO (HSMMC)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <
linux/platform_device.h
>
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#include <
linux/io.h
>
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#include <
linux/gpio.h
>
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#include <mach/regs-gpio.h>
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#include <mach/regs-clock.h>
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#include <
plat/gpio-cfg.h
>
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#include <
plat/sdhci.h
>
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#include <plat/cpu.h>
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void
s5p64x0_setup_sdhci0_cfg_gpio
(
struct
platform_device
*
dev
,
int
width
)
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{
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struct
s3c_sdhci_platdata
*
pdata
= dev->
dev
.platform_data;
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/* Set all the necessary GPG pins to special-function 2 */
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if
(
soc_is_s5p6450
())
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s3c_gpio_cfgrange_nopull(
S5P6450_GPG
(0), 2 + width,
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S3C_GPIO_SFN
(2));
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else
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s3c_gpio_cfgrange_nopull(
S5P6440_GPG
(0), 2 + width,
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S3C_GPIO_SFN
(2));
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/* Set GPG[6] pin to special-function 2 - MMC0 CDn */
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if
(pdata->
cd_type
==
S3C_SDHCI_CD_INTERNAL
) {
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if
(
soc_is_s5p6450
()) {
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s3c_gpio_setpull
(
S5P6450_GPG
(6),
S3C_GPIO_PULL_UP
);
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s3c_gpio_cfgpin
(
S5P6450_GPG
(6),
S3C_GPIO_SFN
(2));
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}
else
{
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s3c_gpio_setpull
(
S5P6440_GPG
(6),
S3C_GPIO_PULL_UP
);
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s3c_gpio_cfgpin
(
S5P6440_GPG
(6),
S3C_GPIO_SFN
(2));
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}
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}
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}
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void
s5p64x0_setup_sdhci1_cfg_gpio
(
struct
platform_device
*
dev
,
int
width
)
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{
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struct
s3c_sdhci_platdata
*
pdata
= dev->
dev
.platform_data;
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/* Set GPH[0:1] pins to special-function 2 - CLK and CMD */
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if
(
soc_is_s5p6450
())
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s3c_gpio_cfgrange_nopull(
S5P6450_GPH
(0), 2,
S3C_GPIO_SFN
(2));
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else
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s3c_gpio_cfgrange_nopull(
S5P6440_GPH
(0), 2 ,
S3C_GPIO_SFN
(2));
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switch
(width) {
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case
8:
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/* Set data pins GPH[6:9] special-function 2 */
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if
(
soc_is_s5p6450
())
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s3c_gpio_cfgrange_nopull(
S5P6450_GPH
(6), 4,
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S3C_GPIO_SFN
(2));
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else
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s3c_gpio_cfgrange_nopull(
S5P6440_GPH
(6), 4,
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S3C_GPIO_SFN
(2));
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case
4:
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/* set data pins GPH[2:5] special-function 2 */
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if
(
soc_is_s5p6450
())
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s3c_gpio_cfgrange_nopull(
S5P6450_GPH
(2), 4,
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S3C_GPIO_SFN
(2));
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else
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s3c_gpio_cfgrange_nopull(
S5P6440_GPH
(2), 4,
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S3C_GPIO_SFN
(2));
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default
:
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break
;
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}
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/* Set GPG[6] pin to special-funtion 3 : MMC1 CDn */
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if
(pdata->
cd_type
==
S3C_SDHCI_CD_INTERNAL
) {
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if
(
soc_is_s5p6450
()) {
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s3c_gpio_setpull
(
S5P6450_GPG
(6),
S3C_GPIO_PULL_UP
);
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s3c_gpio_cfgpin
(
S5P6450_GPG
(6),
S3C_GPIO_SFN
(3));
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}
else
{
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s3c_gpio_setpull
(
S5P6440_GPG
(6),
S3C_GPIO_PULL_UP
);
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s3c_gpio_cfgpin
(
S5P6440_GPG
(6),
S3C_GPIO_SFN
(3));
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}
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}
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}
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void
s5p6440_setup_sdhci2_cfg_gpio
(
struct
platform_device
*
dev
,
int
width
)
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{
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/* Set GPC[4:5] pins to special-function 3 - CLK and CMD */
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s3c_gpio_cfgrange_nopull(
S5P6440_GPC
(4), 2,
S3C_GPIO_SFN
(3));
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/* Set data pins GPH[6:9] pins to special-function 3 */
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s3c_gpio_cfgrange_nopull(
S5P6440_GPH
(6), 4,
S3C_GPIO_SFN
(3));
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}
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void
s5p6450_setup_sdhci2_cfg_gpio
(
struct
platform_device
*
dev
,
int
width
)
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{
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/* Set all the necessary GPG pins to special-function 3 */
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s3c_gpio_cfgrange_nopull(
S5P6450_GPG
(7), 2 + width,
S3C_GPIO_SFN
(3));
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}
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1.8.2