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Diffstat (limited to 'arch/arm/plat-omap/i2c.c')
-rw-r--r--arch/arm/plat-omap/i2c.c98
1 files changed, 72 insertions, 26 deletions
diff --git a/arch/arm/plat-omap/i2c.c b/arch/arm/plat-omap/i2c.c
index f044b5927508..eec2b4993c69 100644
--- a/arch/arm/plat-omap/i2c.c
+++ b/arch/arm/plat-omap/i2c.c
@@ -38,6 +38,7 @@
#define OMAP2_I2C_BASE1 0x48070000
#define OMAP2_I2C_BASE2 0x48072000
#define OMAP2_I2C_BASE3 0x48060000
+#define OMAP4_I2C_BASE4 0x48350000
static const char name[] = "i2c_omap";
@@ -54,11 +55,14 @@ static const char name[] = "i2c_omap";
static struct resource i2c_resources[][2] = {
{ I2C_RESOURCE_BUILDER(0, 0) },
-#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
- { I2C_RESOURCE_BUILDER(OMAP2_I2C_BASE2, INT_24XX_I2C2_IRQ) },
+#if defined(CONFIG_ARCH_OMAP2PLUS)
+ { I2C_RESOURCE_BUILDER(OMAP2_I2C_BASE2, 0) },
#endif
-#if defined(CONFIG_ARCH_OMAP3)
- { I2C_RESOURCE_BUILDER(OMAP2_I2C_BASE3, INT_34XX_I2C3_IRQ) },
+#if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4)
+ { I2C_RESOURCE_BUILDER(OMAP2_I2C_BASE3, 0) },
+#endif
+#if defined(CONFIG_ARCH_OMAP4)
+ { I2C_RESOURCE_BUILDER(OMAP4_I2C_BASE4, 0) },
#endif
};
@@ -76,12 +80,15 @@ static struct resource i2c_resources[][2] = {
static struct omap_i2c_bus_platform_data i2c_pdata[ARRAY_SIZE(i2c_resources)];
static struct platform_device omap_i2c_devices[] = {
I2C_DEV_BUILDER(1, i2c_resources[0], &i2c_pdata[0]),
-#if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
+#if defined(CONFIG_ARCH_OMAP2PLUS)
I2C_DEV_BUILDER(2, i2c_resources[1], &i2c_pdata[1]),
#endif
-#if defined(CONFIG_ARCH_OMAP3)
+#if defined(CONFIG_ARCH_OMAP3) || defined(CONFIG_ARCH_OMAP4)
I2C_DEV_BUILDER(3, i2c_resources[2], &i2c_pdata[2]),
#endif
+#if defined(CONFIG_ARCH_OMAP4)
+ I2C_DEV_BUILDER(4, i2c_resources[3], &i2c_pdata[3]),
+#endif
};
#define OMAP_I2C_CMDLINE_SETUP (BIT(31))
@@ -96,37 +103,60 @@ static int __init omap_i2c_nr_ports(void)
ports = 2;
else if (cpu_is_omap34xx())
ports = 3;
+ else if (cpu_is_omap44xx())
+ ports = 4;
return ports;
}
-static int __init omap_i2c_add_bus(int bus_id)
+/* Shared between omap2 and 3 */
+static resource_size_t omap2_i2c_irq[3] __initdata = {
+ INT_24XX_I2C1_IRQ,
+ INT_24XX_I2C2_IRQ,
+ INT_34XX_I2C3_IRQ,
+};
+
+static resource_size_t omap4_i2c_irq[4] __initdata = {
+ OMAP44XX_IRQ_I2C1,
+ OMAP44XX_IRQ_I2C2,
+ OMAP44XX_IRQ_I2C3,
+ OMAP44XX_IRQ_I2C4,
+};
+
+static inline int omap1_i2c_add_bus(struct platform_device *pdev, int bus_id)
{
- struct platform_device *pdev;
struct omap_i2c_bus_platform_data *pd;
struct resource *res;
- resource_size_t base, irq;
- pdev = &omap_i2c_devices[bus_id - 1];
pd = pdev->dev.platform_data;
+ res = pdev->resource;
+ res[0].start = OMAP1_I2C_BASE;
+ res[0].end = res[0].start + OMAP_I2C_SIZE;
+ res[1].start = INT_I2C;
+ omap1_i2c_mux_pins(bus_id);
+
+ return platform_device_register(pdev);
+}
+
+static inline int omap2_i2c_add_bus(struct platform_device *pdev, int bus_id)
+{
+ struct resource *res;
+ resource_size_t *irq;
+
+ res = pdev->resource;
+
+ if (!cpu_is_omap44xx())
+ irq = omap2_i2c_irq;
+ else
+ irq = omap4_i2c_irq;
+
if (bus_id == 1) {
- res = pdev->resource;
- if (cpu_class_is_omap1()) {
- base = OMAP1_I2C_BASE;
- irq = INT_I2C;
- } else {
- base = OMAP2_I2C_BASE1;
- irq = INT_24XX_I2C1_IRQ;
- }
- res[0].start = base;
- res[0].end = base + OMAP_I2C_SIZE;
- res[1].start = irq;
+ res[0].start = OMAP2_I2C_BASE1;
+ res[0].end = res[0].start + OMAP_I2C_SIZE;
}
- if (cpu_class_is_omap1())
- omap1_i2c_mux_pins(bus_id);
- if (cpu_class_is_omap2())
- omap2_i2c_mux_pins(bus_id);
+ res[1].start = irq[bus_id - 1];
+ omap2_i2c_mux_pins(bus_id);
/*
* When waiting for completion of a i2c transfer, we need to
@@ -134,12 +164,28 @@ static int __init omap_i2c_add_bus(int bus_id)
* ensure quick enough wakeup from idle, when transfer
* completes.
*/
- if (cpu_is_omap34xx())
+ if (cpu_is_omap34xx()) {
+ struct omap_i2c_bus_platform_data *pd;
+
+ pd = pdev->dev.platform_data;
pd->set_mpu_wkup_lat = omap_pm_set_max_mpu_wakeup_lat;
+ }
return platform_device_register(pdev);
}
+static int __init omap_i2c_add_bus(int bus_id)
+{
+ struct platform_device *pdev;
+
+ pdev = &omap_i2c_devices[bus_id - 1];
+
+ if (cpu_class_is_omap1())
+ return omap1_i2c_add_bus(pdev, bus_id);
+ else
+ return omap2_i2c_add_bus(pdev, bus_id);
+}
+
/**
* omap_i2c_bus_setup - Process command line options for the I2C bus speed
* @str: String of options