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| author | Tin Huynh <tnhuynh@apm.com> | 2016-12-02 11:39:13 +0700 |
|---|---|---|
| committer | Jacek Anaszewski <j.anaszewski@samsung.com> | 2016-12-02 09:31:50 +0100 |
| commit | 44b3e31d540e917a4d2292b902ade63fa1748d9a (patch) | |
| tree | b5c9a00635483d9ebeaaf9bc95fc029857cc6695 /drivers/leds/leds-pca955x.c | |
| parent | 825fe38a0976756fba907952d5ac9d4046068fe0 (diff) | |
| download | lwn-44b3e31d540e917a4d2292b902ade63fa1748d9a.tar.gz lwn-44b3e31d540e917a4d2292b902ade63fa1748d9a.zip | |
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>
Diffstat (limited to 'drivers/leds/leds-pca955x.c')
| -rw-r--r-- | drivers/leds/leds-pca955x.c | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/drivers/leds/leds-pca955x.c b/drivers/leds/leds-pca955x.c index 840401ae9a4e..78a7ce816a47 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 @@ 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; - 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 @@ 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, |