i2c: versatile: Add Device Tree support

This patch adds Device Tree binding ("arm,versatile-i2c") and
basic support (bus population) to versatile-i2c driver.

Signed-off-by: Pawel Moll <pawel.moll@arm.com>
[wsa: constified match-table]

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>

diff --git a/drivers/i2c/busses/i2c-versatile.c b/drivers/i2c/busses/i2c-versatile.c
index 6055601..f585aea 100644 (file)
--- a/drivers/i2c/busses/i2c-versatile.c
+++ b/drivers/i2c/busses/i2c-versatile.c
@@ -16,6 +16,7 @@
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 #include <linux/io.h>
+#include <linux/of_i2c.h>
 
 #define I2C_CONTROL    0x00
 #define I2C_CONTROLS   0x00
@@ -99,6 +100,7 @@ static int i2c_versatile_probe(struct platform_device *dev)
        strlcpy(i2c->adap.name, "Versatile I2C adapter", sizeof(i2c->adap.name));
        i2c->adap.algo_data = &i2c->algo;
        i2c->adap.dev.parent = &dev->dev;
+       i2c->adap.dev.of_node = dev->dev.of_node;
        i2c->algo = i2c_versatile_algo;
        i2c->algo.data = i2c;
 
@@ -111,6 +113,7 @@ static int i2c_versatile_probe(struct platform_device *dev)
                ret = i2c_bit_add_bus(&i2c->adap);
        if (ret >= 0) {
                platform_set_drvdata(dev, i2c);
+               of_i2c_register_devices(&i2c->adap);
                return 0;
        }
 
@@ -133,12 +136,19 @@ static int i2c_versatile_remove(struct platform_device *dev)
        return 0;
 }
 
+static const struct of_device_id i2c_versatile_match[] = {
+       { .compatible = "arm,versatile-i2c", },
+       {},
+};
+MODULE_DEVICE_TABLE(of, i2c_versatile_match);
+
 static struct platform_driver i2c_versatile_driver = {
        .probe          = i2c_versatile_probe,
        .remove         = i2c_versatile_remove,
        .driver         = {
                .name   = "versatile-i2c",
                .owner  = THIS_MODULE,
+               .of_match_table = i2c_versatile_match,
        },
 };