omap1: mmc: Add platform init for omap7xx

The MMC mux pins normally used by omap chips in devices.c
are different from what is needed by omap7xx chips.  This
change adds a conditional around the mux setup code to
enable the correct mux pins.

The omap730 and omap850 both use a different clock for the "fck"
clock of the MMC interface than other omap processors based on the
SOFT_REQ_REG, pin 12.  The "ick" clock is the same as that used
by other omap processors.

* Added the missing clock definition as mmc3_ck to clock.h
* Added the clock definition to omap_clks in clock.c
* Added CK_7XX to the mmci-omap.0 "ick" clock already in clock.c

With these changes, it is now possible to initialize and use MMC
cards with omap730 and omap850 devices.

Signed-off-by: Cory Maccarrone <darkstar6262@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

4 files changed, 30 insertions, 5 deletions

diff --git a/arch/arm/mach-omap1/clock.c b/arch/arm/mach-omap1/clock.c
index b4fec9a6e89e..7b146c06ca8a 100644
--- a/arch/arm/mach-omap1/clock.c
+++ b/arch/arm/mach-omap1/clock.c
@@ -125,7 +125,8 @@ static struct omap_clk omap_clks[] = {
         CLK(NULL,       "bclk",         &bclk_1510,     CK_1510 | CK_310),
         CLK(NULL,       "bclk",         &bclk_16xx,     CK_16XX),
         CLK("mmci-omap.0", "fck",       &mmc1_ck,       CK_16XX | CK_1510 | CK_310),
-        CLK("mmci-omap.0", "ick",       &armper_ck.clk, CK_16XX | CK_1510 | CK_310),
+        CLK("mmci-omap.0", "fck",       &mmc3_ck,       CK_7XX),
+        CLK("mmci-omap.0", "ick",       &armper_ck.clk, CK_16XX | CK_1510 | CK_310 | CK_7XX),
         CLK("mmci-omap.1", "fck",       &mmc2_ck,       CK_16XX),
         CLK("mmci-omap.1", "ick",       &armper_ck.clk, CK_16XX),
         /* Virtual clocks */
diff --git a/arch/arm/mach-omap1/clock.h b/arch/arm/mach-omap1/clock.h
index 17f874271255..fac921c00bfe 100644
--- a/arch/arm/mach-omap1/clock.h
+++ b/arch/arm/mach-omap1/clock.h
@@ -637,6 +637,18 @@ static struct clk mmc2_ck = {
         .enable_bit     = 20,
 };
 
+static struct clk mmc3_ck = {
+        .name           = "mmc_ck",
+        .id             = 2,
+        .ops            = &clkops_generic,
+        /* Functional clock is direct from ULPD, interface clock is ARMPER */
+        .parent         = &armper_ck.clk,
+        .rate           = 48000000,
+        .flags          = RATE_FIXED | ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT,
+        .enable_reg     = OMAP1_IO_ADDRESS(SOFT_REQ_REG),
+        .enable_bit     = 12,
+};
+
 static struct clk virtual_ck_mpu = {
         .name           = "mpu",
         .ops            = &clkops_null,
diff --git a/arch/arm/mach-omap1/devices.c b/arch/arm/mach-omap1/devices.c
index 6d2f72dcbb04..23ded2d49600 100644
--- a/arch/arm/mach-omap1/devices.c
+++ b/arch/arm/mach-omap1/devices.c
@@ -108,15 +108,22 @@ static inline void omap1_mmc_mux(struct omap_mmc_platform_data *mmc_controller,
                         int controller_nr)
 {
         if (controller_nr == 0) {
-                omap_cfg_reg(MMC_CMD);
-                omap_cfg_reg(MMC_CLK);
-                omap_cfg_reg(MMC_DAT0);
+                if (cpu_is_omap7xx()) {
+                        omap_cfg_reg(MMC_7XX_CMD);
+                        omap_cfg_reg(MMC_7XX_CLK);
+                        omap_cfg_reg(MMC_7XX_DAT0);
+                } else {
+                        omap_cfg_reg(MMC_CMD);
+                        omap_cfg_reg(MMC_CLK);
+                        omap_cfg_reg(MMC_DAT0);
+                }
+
                 if (cpu_is_omap1710()) {
                         omap_cfg_reg(M15_1710_MMC_CLKI);
                         omap_cfg_reg(P19_1710_MMC_CMDDIR);
                         omap_cfg_reg(P20_1710_MMC_DATDIR0);
                 }
-                if (mmc_controller->slots[0].wires == 4) {
+                if (mmc_controller->slots[0].wires == 4 && !cpu_is_omap7xx()) {
                         omap_cfg_reg(MMC_DAT1);
                         /* NOTE: DAT2 can be on W10 (here) or M15 */
                         if (!mmc_controller->slots[0].nomux)
diff --git a/arch/arm/mach-omap1/mux.c b/arch/arm/mach-omap1/mux.c
index 1e6145c9ee93..785371e982fc 100644
--- a/arch/arm/mach-omap1/mux.c
+++ b/arch/arm/mach-omap1/mux.c
@@ -51,6 +51,11 @@ MUX_CFG_7XX("E3_7XX_KBC4",        13,   25,    0,   24,   1, 0)
 MUX_CFG_7XX("AA17_7XX_USB_DM",     2,   21,    0,   20,   0, 0)
 MUX_CFG_7XX("W16_7XX_USB_PU_EN",   2,   25,    0,   24,   0, 0)
 MUX_CFG_7XX("W17_7XX_USB_VBUSI",   2,   29,    0,   28,   0, 0)
+
+/* MMC Pins */
+MUX_CFG_7XX("MMC_7XX_CMD",         2,    9,    0,    8,   1, 0)
+MUX_CFG_7XX("MMC_7XX_CLK",         2,   13,    0,   12,   1, 0)
+MUX_CFG_7XX("MMC_7XX_DAT0",        2,   17,    0,   16,   1, 0)
 };
 #define OMAP7XX_PINS_SZ         ARRAY_SIZE(omap7xx_pins)
 #else