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authorBen Dooks <ben-linux@fluff.org>2009-03-25 11:01:24 +0000
committerBen Dooks <ben-linux@fluff.org>2009-05-07 11:04:58 +0100
commit4faf6867638cc21aa43b4ca4ed0bdf14a2d29762 (patch)
tree1fed91079785469a6f044900bd322166df37adbf /arch/arm/plat-s3c64xx
parente074f9803227236252c8e7be16d836d709abff57 (diff)
[ARM] S3C64XX: Add S3C6400 SDHCI setup support
Add support for S3C6400 SDHCI channels 0 and 1, making the GPIO code common to both S3C6400 and S3C6410. Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Diffstat (limited to 'arch/arm/plat-s3c64xx')
-rw-r--r--arch/arm/plat-s3c64xx/Kconfig5
-rw-r--r--arch/arm/plat-s3c64xx/Makefile1
-rw-r--r--arch/arm/plat-s3c64xx/setup-sdhci-gpio.c55
3 files changed, 61 insertions, 0 deletions
diff --git a/arch/arm/plat-s3c64xx/Kconfig b/arch/arm/plat-s3c64xx/Kconfig
index ad48fd73e04..eb088db0e65 100644
--- a/arch/arm/plat-s3c64xx/Kconfig
+++ b/arch/arm/plat-s3c64xx/Kconfig
@@ -60,4 +60,9 @@ config S3C64XX_SETUP_FB_24BPP
help
Common setup code for S3C64XX with an 24bpp RGB display helper.
+config S3C64XX_SETUP_SDHCI_GPIO
+ bool
+ help
+ Common setup code for S3C64XX SDHCI GPIO configurations
+
endif
diff --git a/arch/arm/plat-s3c64xx/Makefile b/arch/arm/plat-s3c64xx/Makefile
index 12ac7a50ab7..030050f5c76 100644
--- a/arch/arm/plat-s3c64xx/Makefile
+++ b/arch/arm/plat-s3c64xx/Makefile
@@ -35,3 +35,4 @@ obj-$(CONFIG_PM) += irq-pm.o
obj-$(CONFIG_S3C64XX_SETUP_I2C0) += setup-i2c0.o
obj-$(CONFIG_S3C64XX_SETUP_I2C1) += setup-i2c1.o
obj-$(CONFIG_S3C64XX_SETUP_FB_24BPP) += setup-fb-24bpp.o
+obj-$(CONFIG_S3C64XX_SETUP_SDHCI_GPIO) += setup-sdhci-gpio.o \ No newline at end of file
diff --git a/arch/arm/plat-s3c64xx/setup-sdhci-gpio.c b/arch/arm/plat-s3c64xx/setup-sdhci-gpio.c
new file mode 100644
index 00000000000..5417123b0ac
--- /dev/null
+++ b/arch/arm/plat-s3c64xx/setup-sdhci-gpio.c
@@ -0,0 +1,55 @@
+/* linux/arch/arm/plat-s3c64xx/setup-sdhci-gpio.c
+ *
+ * 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)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/io.h>
+
+#include <mach/gpio.h>
+#include <plat/gpio-cfg.h>
+
+void s3c64xx_setup_sdhci0_cfg_gpio(struct platform_device *dev, int width)
+{
+ unsigned int gpio;
+ unsigned int end;
+
+ end = S3C64XX_GPG(2 + width);
+
+ /* Set all the necessary GPG pins to special-function 0 */
+ for (gpio = S3C64XX_GPG(0); gpio < end; gpio++) {
+ s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
+ s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
+ }
+
+ 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)
+{
+ unsigned int gpio;
+ unsigned int end;
+
+ end = S3C64XX_GPH(2 + width);
+
+ /* Set all the necessary GPG pins to special-function 0 */
+ for (gpio = S3C64XX_GPH(0); gpio < end; gpio++) {
+ s3c_gpio_cfgpin(gpio, S3C_GPIO_SFN(2));
+ s3c_gpio_setpull(gpio, S3C_GPIO_PULL_NONE);
+ }
+
+ s3c_gpio_setpull(S3C64XX_GPG(6), S3C_GPIO_PULL_UP);
+ s3c_gpio_cfgpin(S3C64XX_GPG(6), S3C_GPIO_SFN(3));
+}