i2c: sh_mobile: add device tree support

This patch enables DT support for the IIC driver
used on SH-based SoCs such as sh7722 and sh7724
among others as well as SH-Mobile SoCs such as
sh7367, sh7377, sh7372, sh73a0 and r8a7740.

Tested with out-of-tree DT support code on the
sh7372 Mackerel board.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>

1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/i2c/busses/i2c-sh_mobile.c b/drivers/i2c/busses/i2c-sh_mobile.c
index 675c9692d14..8110ca45f34 100644
--- a/drivers/i2c/busses/i2c-sh_mobile.c
+++ b/drivers/i2c/busses/i2c-sh_mobile.c
@@ -27,6 +27,7 @@
 #include <linux/platform_device.h>
 #include <linux/interrupt.h>
 #include <linux/i2c.h>
+#include <linux/of_i2c.h>
 #include <linux/err.h>
 #include <linux/pm_runtime.h>
 #include <linux/clk.h>
@@ -653,6 +654,7 @@ static int sh_mobile_i2c_probe(struct platform_device *dev)
         adap->dev.parent = &dev->dev;
         adap->retries = 5;
         adap->nr = dev->id;
+        adap->dev.of_node = dev->dev.of_node;
 
         strlcpy(adap->name, dev->name, sizeof(adap->name));
 
@@ -667,6 +669,8 @@ static int sh_mobile_i2c_probe(struct platform_device *dev)
 
         dev_info(&dev->dev, "I2C adapter %d with bus speed %lu Hz\n",
                  adap->nr, pd->bus_speed);
+
+        of_i2c_register_devices(adap);
         return 0;
 
  err_all:
@@ -710,11 +714,18 @@ static const struct dev_pm_ops sh_mobile_i2c_dev_pm_ops = {
         .runtime_resume = sh_mobile_i2c_runtime_nop,
 };
 
+static const struct of_device_id sh_mobile_i2c_dt_ids[] __devinitconst = {
+        { .compatible = "renesas,rmobile-iic", },
+        {},
+};
+MODULE_DEVICE_TABLE(of, sh_mobile_i2c_dt_ids);
+
 static struct platform_driver sh_mobile_i2c_driver = {
         .driver         = {
                 .name           = "i2c-sh_mobile",
                 .owner          = THIS_MODULE,
                 .pm             = &sh_mobile_i2c_dev_pm_ops,
+                .of_match_table = sh_mobile_i2c_dt_ids,
         },
         .probe          = sh_mobile_i2c_probe,
         .remove         = sh_mobile_i2c_remove,