[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>

10 files changed, 187 insertions, 40 deletions

diff --git a/arch/arm/mach-s3c6400/Kconfig b/arch/arm/mach-s3c6400/Kconfig
index f0292a8cddde..f5af212066c3 100644
--- a/arch/arm/mach-s3c6400/Kconfig
+++ b/arch/arm/mach-s3c6400/Kconfig
@@ -14,11 +14,18 @@ config CPU_S3C6400
         help
           Enable S3C6400 CPU support
 
+config S3C6400_SETUP_SDHCI
+        bool
+        help
+          Internal configuration for default SDHCI
+          setup for S3C6400.
+
 # S36400 Macchine support
 
 config MACH_SMDK6400
        bool "SMDK6400"
         select CPU_S3C6400
         select S3C_DEV_HSMMC
+        select S3C6400_SETUP_SDHCI
         help
           Machine support for the Samsung SMDK6400
diff --git a/arch/arm/mach-s3c6400/Makefile b/arch/arm/mach-s3c6400/Makefile
index 07eac2be6f6f..df1ce4aa03e5 100644
--- a/arch/arm/mach-s3c6400/Makefile
+++ b/arch/arm/mach-s3c6400/Makefile
@@ -14,6 +14,10 @@ obj-				:=
 
 obj-$(CONFIG_CPU_S3C6400)       += s3c6400.o
 
+# setup support
+
+obj-$(CONFIG_S3C6400_SETUP_SDHCI) += setup-sdhci.o
+
 # Machine support
 
 obj-$(CONFIG_MACH_SMDK6400)     += mach-smdk6400.o
diff --git a/arch/arm/mach-s3c6400/s3c6400.c b/arch/arm/mach-s3c6400/s3c6400.c
index d11a4272b94c..bd17f3db2c21 100644
--- a/arch/arm/mach-s3c6400/s3c6400.c
+++ b/arch/arm/mach-s3c6400/s3c6400.c
@@ -40,7 +40,12 @@
 
 void __init s3c6400_map_io(void)
 {
-        /* the i2c device is directly compatible with s3c2440 */
+        /* setup SDHCI */
+
+        s3c6400_default_sdhci0();
+        s3c6400_default_sdhci1();
+
+        /* the i2c devices are directly compatible with s3c2440 */
         s3c_i2c0_setname("s3c2440-i2c");
 }
 
diff --git a/arch/arm/mach-s3c6400/setup-sdhci.c b/arch/arm/mach-s3c6400/setup-sdhci.c
new file mode 100644
index 000000000000..b93dafbee1f4
--- /dev/null
+++ b/arch/arm/mach-s3c6400/setup-sdhci.c
@@ -0,0 +1,63 @@
+/* linux/arch/arm/mach-s3c6410/setup-sdhci.c
+ *
+ * Copyright 2008 Simtec Electronics
+ * Copyright 2008 Simtec Electronics
+ *      Ben Dooks <ben@simtec.co.uk>
+ *      http://armlinux.simtec.co.uk/
+ *
+ * S3C6410 - Helper functions for settign up SDHCI device(s) (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 <linux/mmc/card.h>
+#include <linux/mmc/host.h>
+
+#include <plat/regs-sdhci.h>
+#include <plat/sdhci.h>
+
+/* clock sources for the mmc bus clock, order as for the ctrl2[5..4] */
+
+char *s3c6400_hsmmc_clksrcs[4] = {
+        [0] = "hsmmc",
+        [1] = "hsmmc",
+        [2] = "mmc_bus",
+        /* [3] = "48m", - note not succesfully used yet */
+};
+
+void s3c6400_setup_sdhci_cfg_card(struct platform_device *dev,
+                                  void __iomem *r,
+                                  struct mmc_ios *ios,
+                                  struct mmc_card *card)
+{
+        u32 ctrl2, ctrl3;
+
+        ctrl2 = readl(r + S3C_SDHCI_CONTROL2);
+        ctrl2 &= S3C_SDHCI_CTRL2_SELBASECLK_MASK;
+        ctrl2 |= (S3C64XX_SDHCI_CTRL2_ENSTAASYNCCLR |
+                  S3C64XX_SDHCI_CTRL2_ENCMDCNFMSK |
+                  S3C_SDHCI_CTRL2_ENFBCLKRX |
+                  S3C_SDHCI_CTRL2_DFCNT_NONE |
+                  S3C_SDHCI_CTRL2_ENCLKOUTHOLD);
+
+        if (ios->clock < 25 * 1000000)
+                ctrl3 = (S3C_SDHCI_CTRL3_FCSEL3 |
+                         S3C_SDHCI_CTRL3_FCSEL2 |
+                         S3C_SDHCI_CTRL3_FCSEL1 |
+                         S3C_SDHCI_CTRL3_FCSEL0);
+        else
+                ctrl3 = (S3C_SDHCI_CTRL3_FCSEL1 | S3C_SDHCI_CTRL3_FCSEL0);
+
+        printk(KERN_INFO "%s: CTRL 2=%08x, 3=%08x\n", __func__, ctrl2, ctrl3);
+        writel(ctrl2, r + S3C_SDHCI_CONTROL2);
+        writel(ctrl3, r + S3C_SDHCI_CONTROL3);
+}
+
diff --git a/arch/arm/mach-s3c6410/Kconfig b/arch/arm/mach-s3c6410/Kconfig
index 0c8df9797e55..4f7ffc7ce859 100644
--- a/arch/arm/mach-s3c6410/Kconfig
+++ b/arch/arm/mach-s3c6410/Kconfig
@@ -16,6 +16,7 @@ config CPU_S3C6410
 
 config S3C6410_SETUP_SDHCI
         bool
+        select S3C64XX_SETUP_SDHCI_GPIO
         help
           Internal helper functions for S3C6410 based SDHCI systems
 
diff --git a/arch/arm/mach-s3c6410/setup-sdhci.c b/arch/arm/mach-s3c6410/setup-sdhci.c
index 0b5788bd5985..20666f3bd478 100644
--- a/arch/arm/mach-s3c6410/setup-sdhci.c
+++ b/arch/arm/mach-s3c6410/setup-sdhci.c
@@ -21,8 +21,6 @@
 #include <linux/mmc/card.h>
 #include <linux/mmc/host.h>
 
-#include <mach/gpio.h>
-#include <plat/gpio-cfg.h>
 #include <plat/regs-sdhci.h>
 #include <plat/sdhci.h>
 
@@ -35,22 +33,6 @@ char *s3c6410_hsmmc_clksrcs[4] = {
         /* [3] = "48m", - note not succesfully used yet */
 };
 
-void s3c6410_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 s3c6410_setup_sdhci0_cfg_card(struct platform_device *dev,
                                     void __iomem *r,
@@ -84,19 +66,3 @@ void s3c6410_setup_sdhci0_cfg_card(struct platform_device *dev,
         writel(ctrl3, r + S3C_SDHCI_CONTROL3);
 }
 
-void s3c6410_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));
-}
diff --git a/arch/arm/plat-s3c/include/plat/sdhci.h b/arch/arm/plat-s3c/include/plat/sdhci.h
index c4ca3920ca4b..f615308ccdfb 100644
--- a/arch/arm/plat-s3c/include/plat/sdhci.h
+++ b/arch/arm/plat-s3c/include/plat/sdhci.h
@@ -67,12 +67,52 @@ extern struct s3c_sdhci_platdata s3c_hsmmc1_def_platdata;
 
 /* Helper function availablity */
 
+extern void s3c64xx_setup_sdhci0_cfg_gpio(struct platform_device *, int w);
+extern void s3c64xx_setup_sdhci1_cfg_gpio(struct platform_device *, int w);
+
+/* S3C6400 SDHCI setup */
+
+#ifdef CONFIG_S3C6400_SETUP_SDHCI
+extern char *s3c6400_hsmmc_clksrcs[4];
+
+#ifdef CONFIG_S3C_DEV_HSMMC
+extern void s3c6400_setup_sdhci_cfg_card(struct platform_device *dev,
+                                         void __iomem *r,
+                                         struct mmc_ios *ios,
+                                         struct mmc_card *card);
+
+static inline void s3c6400_default_sdhci0(void)
+{
+        s3c_hsmmc0_def_platdata.clocks = s3c6400_hsmmc_clksrcs;
+        s3c_hsmmc0_def_platdata.cfg_gpio = s3c64xx_setup_sdhci0_cfg_gpio;
+        s3c_hsmmc0_def_platdata.cfg_card = s3c6400_setup_sdhci_cfg_card;
+}
+
+#else
+static inline void s3c6400_default_sdhci0(void) { }
+#endif  /* CONFIG_S3C_DEV_HSMMC */
+
+#ifdef CONFIG_S3C_DEV_HSMMC1
+static inline void s3c6400_default_sdhci1(void)
+{
+        s3c_hsmmc1_def_platdata.clocks = s3c6400_hsmmc_clksrcs;
+        s3c_hsmmc1_def_platdata.cfg_gpio = s3c64xx_setup_sdhci1_cfg_gpio;
+        s3c_hsmmc1_def_platdata.cfg_card = s3c6400_setup_sdhci_cfg_card;
+}
+#else
+static inline void s3c6400_default_sdhci1(void) { }
+#endif /* CONFIG_S3C_DEV_HSMMC1 */
+
+#else
+static inline void s3c6400_default_sdhci0(void) { }
+static inline void s3c6400_default_sdhci1(void) { }
+#endif /* CONFIG_S3C6400_SETUP_SDHCI */
+
+/* S3C6410 SDHCI setup */
+
 #ifdef CONFIG_S3C6410_SETUP_SDHCI
 extern char *s3c6410_hsmmc_clksrcs[4];
 
-extern void s3c6410_setup_sdhci0_cfg_gpio(struct platform_device *, int w);
-extern void s3c6410_setup_sdhci1_cfg_gpio(struct platform_device *, int w);
-
 extern void s3c6410_setup_sdhci0_cfg_card(struct platform_device *dev,
                                            void __iomem *r,
                                            struct mmc_ios *ios,
@@ -82,7 +122,7 @@ extern void s3c6410_setup_sdhci0_cfg_card(struct platform_device *dev,
 static inline void s3c6410_default_sdhci0(void)
 {
         s3c_hsmmc0_def_platdata.clocks = s3c6410_hsmmc_clksrcs;
-        s3c_hsmmc0_def_platdata.cfg_gpio = s3c6410_setup_sdhci0_cfg_gpio;
+        s3c_hsmmc0_def_platdata.cfg_gpio = s3c64xx_setup_sdhci0_cfg_gpio;
         s3c_hsmmc0_def_platdata.cfg_card = s3c6410_setup_sdhci0_cfg_card;
 }
 #else
@@ -93,7 +133,7 @@ static inline void s3c6410_default_sdhci0(void) { }
 static inline void s3c6410_default_sdhci1(void)
 {
         s3c_hsmmc1_def_platdata.clocks = s3c6410_hsmmc_clksrcs;
-        s3c_hsmmc1_def_platdata.cfg_gpio = s3c6410_setup_sdhci1_cfg_gpio;
+        s3c_hsmmc1_def_platdata.cfg_gpio = s3c64xx_setup_sdhci1_cfg_gpio;
         s3c_hsmmc1_def_platdata.cfg_card = s3c6410_setup_sdhci0_cfg_card;
 }
 #else
diff --git a/arch/arm/plat-s3c64xx/Kconfig b/arch/arm/plat-s3c64xx/Kconfig
index ad48fd73e04d..eb088db0e650 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 12ac7a50ab74..030050f5c76d 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 000000000000..5417123b0ac1
--- /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));
+}