[ARM] Orion: I2C support

The Orion I2C controller is the same one used in the Discovery
family (MV643XX). This patch include the common platform_device
stuff according to the existing i2c_mv64xxx.c conventions.

Signed-off-by: Herbert Valerio Riedel <hvr@gnu.org>
Signed-off-by: Tzachi Perelstein <tzachi@marvell.com>

1 files changed, 38 insertions, 0 deletions

diff --git a/arch/arm/mach-orion/common.c b/arch/arm/mach-orion/common.c
index ff34827f82a5..5e20b6b32508 100644
--- a/arch/arm/mach-orion/common.c
+++ b/arch/arm/mach-orion/common.c
@@ -15,6 +15,7 @@
 #include <linux/platform_device.h>
 #include <linux/serial_8250.h>
 #include <linux/mv643xx_eth.h>
+#include <linux/mv643xx_i2c.h>
 #include <asm/page.h>
 #include <asm/timex.h>
 #include <asm/mach/map.h>
@@ -213,6 +214,42 @@ void __init orion_eth_init(struct mv643xx_eth_platform_data *eth_data)
 }
 
 /*****************************************************************************
+ * I2C controller
+ * (The Orion and Discovery (MV643xx) families share the same I2C controller)
+ ****************************************************************************/
+
+static struct mv64xxx_i2c_pdata orion_i2c_pdata = {
+        .freq_m         = 8, /* assumes 166 MHz TCLK */
+        .freq_n         = 3,
+        .timeout        = 1000, /* Default timeout of 1 second */
+};
+
+static struct resource orion_i2c_resources[] = {
+        {
+                .name   = "i2c base",
+                .start  = I2C_BASE,
+                .end    = I2C_BASE + 0x20 -1,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                .name   = "i2c irq",
+                .start  = IRQ_ORION_I2C,
+                .end    = IRQ_ORION_I2C,
+                .flags  = IORESOURCE_IRQ,
+        },
+};
+
+static struct platform_device orion_i2c = {
+        .name           = MV64XXX_I2C_CTLR_NAME,
+        .id             = 0,
+        .num_resources  = ARRAY_SIZE(orion_i2c_resources),
+        .resource       = orion_i2c_resources,
+        .dev            = {
+                .platform_data = &orion_i2c_pdata,
+        },
+};
+
+/*****************************************************************************
  * General
  ****************************************************************************/
 
@@ -274,4 +311,5 @@ void __init orion_init(void)
         platform_device_register(&orion_ehci0);
         if (dev == MV88F5182_DEV_ID)
                 platform_device_register(&orion_ehci1);
+        platform_device_register(&orion_i2c);
 }