Commit 44b3e31d authored by Tin Huynh's avatar Tin Huynh Committed by Jacek Anaszewski
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leds: pca955x: Add ACPI support 



This patch enables ACPI support for leds-pca955x driver.

Signed-off-by: default avatarTin Huynh <tnhuynh@apm.com>
Signed-off-by: default avatarJacek Anaszewski <j.anaszewski@samsung.com>
parent 825fe38a

drivers/leds/leds-pca955x.c

+22 −2
Original line number Diff line number Diff line
@@ -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 @@ static const struct i2c_device_id pca955x_id[] = { 
};

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 @@ static int pca955x_probe(struct i2c_client *client, 
	struct led_platform_data *pdata;

	int i, err;



	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 @@ static int pca955x_probe(struct i2c_client *client, 


	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 int pca955x_remove(struct i2c_client *client) 
static struct i2c_driver pca955x_driver = {

	.driver = {

		.name	= "leds-pca955x",

		.acpi_match_table = ACPI_PTR(pca955x_acpi_ids),

	},

	.probe	= pca955x_probe,

	.remove	= pca955x_remove,