ARM: OMAP3: Add OMAP34xx pin multiplexing into I2C bus registration helper

- Simplify function omap_i2c_mux_pins
- Add OMAP34xx pin multiplexing for busses 1 - 3

Signed-off-by: Jarkko Nikula <jarkko.nikula@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 36 insertions, 19 deletions

diff --git a/arch/arm/plat-omap/i2c.c b/arch/arm/plat-omap/i2c.c
index 0e6d147ab6f..89a6ab0b7db 100644
--- a/arch/arm/plat-omap/i2c.c
+++ b/arch/arm/plat-omap/i2c.c
@@ -79,26 +79,43 @@ static struct platform_device omap_i2c_devices[] = {
 #endif
 };
 
-static void __init omap_i2c_mux_pins(int bus_id)
+#if defined(CONFIG_ARCH_OMAP24XX)
+static const int omap24xx_pins[][2] = {
+        { M19_24XX_I2C1_SCL, L15_24XX_I2C1_SDA },
+        { J15_24XX_I2C2_SCL, H19_24XX_I2C2_SDA },
+};
+#else
+static const int omap24xx_pins[][2] = {};
+#endif
+#if defined(CONFIG_ARCH_OMAP34XX)
+static const int omap34xx_pins[][2] = {
+        { K21_34XX_I2C1_SCL, J21_34XX_I2C1_SDA},
+        { AF15_34XX_I2C2_SCL, AE15_34XX_I2C2_SDA},
+        { AF14_34XX_I2C3_SCL, AG14_34XX_I2C3_SDA},
+};
+#else
+static const int omap34xx_pins[][2] = {};
+#endif
+
+static void __init omap_i2c_mux_pins(int bus)
 {
-        /* TODO: Muxing for OMAP3 */
-        switch (bus_id) {
-        case 1:
-                if (cpu_class_is_omap1()) {
-                        omap_cfg_reg(I2C_SCL);
-                        omap_cfg_reg(I2C_SDA);
-                } else if (cpu_is_omap24xx()) {
-                        omap_cfg_reg(M19_24XX_I2C1_SCL);
-                        omap_cfg_reg(L15_24XX_I2C1_SDA);
-                }
-                break;
-        case 2:
-                if (cpu_is_omap24xx()) {
-                        omap_cfg_reg(J15_24XX_I2C2_SCL);
-                        omap_cfg_reg(H19_24XX_I2C2_SDA);
-                }
-                break;
+        int scl, sda;
+
+        if (cpu_class_is_omap1()) {
+                scl = I2C_SCL;
+                sda = I2C_SDA;
+        } else if (cpu_is_omap24xx()) {
+                scl = omap24xx_pins[bus][0];
+                sda = omap24xx_pins[bus][1];
+        } else if (cpu_is_omap34xx()) {
+                scl = omap34xx_pins[bus][0];
+                sda = omap34xx_pins[bus][1];
+        } else {
+                return;
         }
+
+        omap_cfg_reg(sda);
+        omap_cfg_reg(scl);
 }
 
 int __init omap_register_i2c_bus(int bus_id, u32 clkrate,
@@ -142,6 +159,6 @@ int __init omap_register_i2c_bus(int bus_id, u32 clkrate,
                 res[1].start = irq;
         }
 
-        omap_i2c_mux_pins(bus_id);
+        omap_i2c_mux_pins(bus_id - 1);
         return platform_device_register(pdev);
 }