leds: pca955x: Add ACPI support
This patch enables ACPI support for leds-pca955x driver.
Signed-off-by: Tin Huynh <tnhuynh@apm.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
diff --git a/drivers/leds/leds-pca955x.c b/drivers/leds/leds-pca955x.c
index 840401a..78a7ce8 100644
--- a/drivers/leds/leds-pca955x.c
+++ b/drivers/leds/leds-pca955x.c
@@ -40,6 +40,7 @@
* bits the chip supports.
*/
+#include <linux/acpi.h>
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/string.h>
@@ -100,6 +101,15 @@
};
MODULE_DEVICE_TABLE(i2c, pca955x_id);
+static const struct acpi_device_id pca955x_acpi_ids[] = {
+ { "PCA9550", pca9550 },
+ { "PCA9551", pca9551 },
+ { "PCA9552", pca9552 },
+ { "PCA9553", pca9553 },
+ { }
+};
+MODULE_DEVICE_TABLE(acpi, pca955x_acpi_ids);
+
struct pca955x {
struct mutex lock;
struct pca955x_led *leds;
@@ -250,7 +260,16 @@
struct led_platform_data *pdata;
int i, err;
- chip = &pca955x_chipdefs[id->driver_data];
+ if (id) {
+ chip = &pca955x_chipdefs[id->driver_data];
+ } else {
+ const struct acpi_device_id *acpi_id;
+
+ acpi_id = acpi_match_device(pca955x_acpi_ids, &client->dev);
+ if (!acpi_id)
+ return -ENODEV;
+ chip = &pca955x_chipdefs[acpi_id->driver_data];
+ }
adapter = to_i2c_adapter(client->dev.parent);
pdata = dev_get_platdata(&client->dev);
@@ -264,7 +283,7 @@
dev_info(&client->dev, "leds-pca955x: Using %s %d-bit LED driver at "
"slave address 0x%02x\n",
- id->name, chip->bits, client->addr);
+ client->name, chip->bits, client->addr);
if (!i2c_check_functionality(adapter, I2C_FUNC_I2C))
return -EIO;
@@ -358,6 +377,7 @@
static struct i2c_driver pca955x_driver = {
.driver = {
.name = "leds-pca955x",
+ .acpi_match_table = ACPI_PTR(pca955x_acpi_ids),
},
.probe = pca955x_probe,
.remove = pca955x_remove,