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authorMarek Szyprowski <m.szyprowski@samsung.com>2010-07-23 04:27:18 +0400
committerKukjin Kim <kgene.kim@samsung.com>2010-08-05 13:32:50 +0400
commit19206b174222f0ffef025fe53c9fbd4ab536fcfb (patch)
tree0a5e596b2f641006c7be75d9c9be6afbf0ba520c /arch/arm/mach-s5pc100/setup-sdhci-gpio.c
parentb3c674bc7f3efdcfcd773566639fbf34ffcbefb7 (diff)
downloadlinux-19206b174222f0ffef025fe53c9fbd4ab536fcfb.tar.xz
ARM: SAMSUNG: Add new s3c-sdhci card detection methods for Samsung SoCs
On some Samsung SoCs not all SDHCI controllers have card detect (CD) line. For some embedded designs it is not even needed, because ususally the device (like SDIO flash memory or wifi controller) is permanently wired to the controller. There are also systems which have a card detect line connected to some of the external interrupt lines or the presence of the card depends on some other actions (like enabling a power regulator). This patch adds all required changes to platform support code, so another patch, which extends the driver with support for the new card detection methods can be applied. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> [kgene.kim@samsung.com: minor title and coding-style fixes] [kgene.kim@samsung.com: fix build errors] Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Diffstat (limited to 'arch/arm/mach-s5pc100/setup-sdhci-gpio.c')
-rw-r--r--arch/arm/mach-s5pc100/setup-sdhci-gpio.c22
1 files changed, 16 insertions, 6 deletions
diff --git a/arch/arm/mach-s5pc100/setup-sdhci-gpio.c b/arch/arm/mach-s5pc100/setup-sdhci-gpio.c
index 7769c760c9ef..dc7208c639ea 100644
--- a/arch/arm/mach-s5pc100/setup-sdhci-gpio.c
+++ b/arch/arm/mach-s5pc100/setup-sdhci-gpio.c
@@ -20,9 +20,11 @@
#include <plat/gpio-cfg.h>
#include <plat/regs-sdhci.h>
+#include <plat/sdhci.h>
void s5pc100_setup_sdhci0_cfg_gpio(struct platform_device *dev, int width)
{
+ struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
unsigned int gpio;
unsigned int end;
unsigned int num;
@@ -47,12 +49,15 @@ void s5pc100_setup_sdhci0_cfg_gpio(struct platform_device *dev, int width)
}
}
- s3c_gpio_setpull(S5PC100_GPG1(2), S3C_GPIO_PULL_UP);
- s3c_gpio_cfgpin(S5PC100_GPG1(2), S3C_GPIO_SFN(2));
+ if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
+ s3c_gpio_setpull(S5PC100_GPG1(2), S3C_GPIO_PULL_UP);
+ s3c_gpio_cfgpin(S5PC100_GPG1(2), S3C_GPIO_SFN(2));
+ }
}
void s5pc100_setup_sdhci1_cfg_gpio(struct platform_device *dev, int width)
{
+ struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
unsigned int gpio;
unsigned int end;
@@ -64,12 +69,15 @@ void s5pc100_setup_sdhci1_cfg_gpio(struct platform_device *dev, int width)
s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
}
- s3c_gpio_setpull(S5PC100_GPG2(6), S3C_GPIO_PULL_UP);
- s3c_gpio_cfgpin(S5PC100_GPG2(6), S3C_GPIO_SFN(2));
+ if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
+ s3c_gpio_setpull(S5PC100_GPG2(6), S3C_GPIO_PULL_UP);
+ s3c_gpio_cfgpin(S5PC100_GPG2(6), S3C_GPIO_SFN(2));
+ }
}
void s5pc100_setup_sdhci2_cfg_gpio(struct platform_device *dev, int width)
{
+ struct s3c_sdhci_platdata *pdata = dev->dev.platform_data;
unsigned int gpio;
unsigned int end;
@@ -81,6 +89,8 @@ void s5pc100_setup_sdhci2_cfg_gpio(struct platform_device *dev, int width)
s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
}
- s3c_gpio_setpull(S5PC100_GPG3(6), S3C_GPIO_PULL_UP);
- s3c_gpio_cfgpin(S5PC100_GPG3(6), S3C_GPIO_SFN(2));
+ if (pdata->cd_type == S3C_SDHCI_CD_INTERNAL) {
+ s3c_gpio_setpull(S5PC100_GPG3(6), S3C_GPIO_PULL_UP);
+ s3c_gpio_cfgpin(S5PC100_GPG3(6), S3C_GPIO_SFN(2));
+ }
}