From 6574e001b4bc616022ee706a338fbbac26a9cedd Mon Sep 17 00:00:00 2001
From: Martin Michlmayr <tbm@cyrius.com>
Date: Mon, 23 Mar 2009 19:13:21 +0100
Subject: [ARM] Kirkwood: Hook up I2C

Hook up I2C on Marvell Kirkwood.  Tested on a QNAP TS-219 which has
RTC connected through I2C.

Signed-off-by: Martin Michlmayr <tbm@cyrius.com>
Signed-off-by: Nicolas Pitre <nico@marvell.com>
---
 arch/arm/mach-kirkwood/common.c | 40 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)

(limited to 'arch/arm/mach-kirkwood/common.c')

diff --git a/arch/arm/mach-kirkwood/common.c b/arch/arm/mach-kirkwood/common.c
index 9f012551794d..19b03f62c3f4 100644
--- a/arch/arm/mach-kirkwood/common.c
+++ b/arch/arm/mach-kirkwood/common.c
@@ -14,6 +14,7 @@
 #include <linux/serial_8250.h>
 #include <linux/mbus.h>
 #include <linux/mv643xx_eth.h>
+#include <linux/mv643xx_i2c.h>
 #include <linux/ata_platform.h>
 #include <linux/spi/orion_spi.h>
 #include <net/dsa.h>
@@ -370,6 +371,45 @@ void __init kirkwood_spi_init()
 }
 
 
+/*****************************************************************************
+ * I2C
+ ****************************************************************************/
+static struct mv64xxx_i2c_pdata kirkwood_i2c_pdata = {
+	.freq_m		= 8, /* assumes 166 MHz TCLK */
+	.freq_n		= 3,
+	.timeout	= 1000, /* Default timeout of 1 second */
+};
+
+static struct resource kirkwood_i2c_resources[] = {
+	{
+		.name	= "i2c",
+		.start	= I2C_PHYS_BASE,
+		.end	= I2C_PHYS_BASE + 0x1f,
+		.flags	= IORESOURCE_MEM,
+	}, {
+		.name	= "i2c",
+		.start	= IRQ_KIRKWOOD_TWSI,
+		.end	= IRQ_KIRKWOOD_TWSI,
+		.flags	= IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device kirkwood_i2c = {
+	.name		= MV64XXX_I2C_CTLR_NAME,
+	.id		= 0,
+	.num_resources	= ARRAY_SIZE(kirkwood_i2c_resources),
+	.resource	= kirkwood_i2c_resources,
+	.dev		= {
+		.platform_data	= &kirkwood_i2c_pdata,
+	},
+};
+
+void __init kirkwood_i2c_init(void)
+{
+	platform_device_register(&kirkwood_i2c);
+}
+
+
 /*****************************************************************************
  * UART0
  ****************************************************************************/
-- 
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