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authorYing-Chun Liu (PaulLiu) <paul.liu@linaro.org>2012-04-16 00:01:50 +0800
committerSamuel Ortiz <sameo@linux.intel.com>2012-05-01 12:00:23 +0200
commit58d114b669d2b86aa79eac6688590c808072579b (patch)
treea91d8f027d73ee924f75fef8e0f5f093b5748ff3 /drivers/mfd/da9052-i2c.c
parent465c29d384f60c5fd9bcbc92efb9e249e585740a (diff)
downloadlinux-58d114b669d2b86aa79eac6688590c808072579b.tar.bz2
mfd: Add device-tree support for da9502 i2c driver
This patch adds device-tree support for dialog MFD and the binding documentations. Signed-off-by: Ying-Chun Liu (PaulLiu) <paul.liu@linaro.org> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: Shawn Guo <shawn.guo@linaro.org> Cc: Ashish Jangam <ashish.jangam@kpitcummins.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/mfd/da9052-i2c.c')
-rw-r--r--drivers/mfd/da9052-i2c.c50
1 files changed, 42 insertions, 8 deletions
diff --git a/drivers/mfd/da9052-i2c.c b/drivers/mfd/da9052-i2c.c
index 36b88e395499..d8abdb35161e 100644
--- a/drivers/mfd/da9052-i2c.c
+++ b/drivers/mfd/da9052-i2c.c
@@ -22,6 +22,11 @@
#include <linux/mfd/da9052/da9052.h>
#include <linux/mfd/da9052/reg.h>
+#ifdef CONFIG_OF
+#include <linux/of.h>
+#include <linux/of_device.h>
+#endif
+
static int da9052_i2c_enable_multiwrite(struct da9052 *da9052)
{
int reg_val, ret;
@@ -41,6 +46,24 @@ static int da9052_i2c_enable_multiwrite(struct da9052 *da9052)
return 0;
}
+static struct i2c_device_id da9052_i2c_id[] = {
+ {"da9052", DA9052},
+ {"da9053-aa", DA9053_AA},
+ {"da9053-ba", DA9053_BA},
+ {"da9053-bb", DA9053_BB},
+ {}
+};
+
+#ifdef CONFIG_OF
+static const struct of_device_id dialog_dt_ids[] = {
+ { .compatible = "dlg,da9052", .data = &da9052_i2c_id[0] },
+ { .compatible = "dlg,da9053-aa", .data = &da9052_i2c_id[1] },
+ { .compatible = "dlg,da9053-ab", .data = &da9052_i2c_id[2] },
+ { .compatible = "dlg,da9053-bb", .data = &da9052_i2c_id[3] },
+ { /* sentinel */ }
+};
+#endif
+
static int __devinit da9052_i2c_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
@@ -76,6 +99,22 @@ static int __devinit da9052_i2c_probe(struct i2c_client *client,
if (ret < 0)
goto err_regmap;
+#ifdef CONFIG_OF
+ if (!id) {
+ struct device_node *np = client->dev.of_node;
+ const struct of_device_id *deviceid;
+
+ deviceid = of_match_node(np, dialog_dt_ids);
+ id = (const struct i2c_device_id *)deviceid->data;
+ }
+#endif
+
+ if (!id) {
+ ret = -ENODEV;
+ dev_err(&client->dev, "id is null.\n");
+ goto err_regmap;
+ }
+
ret = da9052_device_init(da9052, id->driver_data);
if (ret != 0)
goto err_regmap;
@@ -100,14 +139,6 @@ static int __devexit da9052_i2c_remove(struct i2c_client *client)
return 0;
}
-static struct i2c_device_id da9052_i2c_id[] = {
- {"da9052", DA9052},
- {"da9053-aa", DA9053_AA},
- {"da9053-ba", DA9053_BA},
- {"da9053-bb", DA9053_BB},
- {}
-};
-
static struct i2c_driver da9052_i2c_driver = {
.probe = da9052_i2c_probe,
.remove = __devexit_p(da9052_i2c_remove),
@@ -115,6 +146,9 @@ static struct i2c_driver da9052_i2c_driver = {
.driver = {
.name = "da9052",
.owner = THIS_MODULE,
+#ifdef CONFIG_OF
+ .of_match_table = dialog_dt_ids,
+#endif
},
};