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i2c: mux: pca954x: Add ACPI support for pca954x

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This patch enables ACPI support for mux-pca954x driver.

Signed-off-by: Tin Huynh <tnhuynh@apm.com>
Acked-by: Peter Rosin <peda@axentia.se>
[wsa: removed a trailing whitespace]
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
tnhuynh@apm.com 2016-11-29 17:12:43 +07:00 committed by Wolfram Sang
parent 4d5538f588
commit bbf9d262a1
1 changed files with 27 additions and 1 deletions
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28
drivers/i2c/muxes/i2c-mux-pca954x.c
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@ -35,6 +35,7 @@
* warranty of any kind, whether express or implied.
*/
#include <linux/acpi.h>
#include <linux/device.h>
#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
@ -120,6 +121,21 @@ static const struct i2c_device_id pca954x_id[] = {
};
MODULE_DEVICE_TABLE(i2c, pca954x_id);
#ifdef CONFIG_ACPI
static const struct acpi_device_id pca954x_acpi_ids[] = {
{ .id = "PCA9540", .driver_data = pca_9540 },
{ .id = "PCA9542", .driver_data = pca_9540 },
{ .id = "PCA9543", .driver_data = pca_9543 },
{ .id = "PCA9544", .driver_data = pca_9544 },
{ .id = "PCA9545", .driver_data = pca_9545 },
{ .id = "PCA9546", .driver_data = pca_9545 },
{ .id = "PCA9547", .driver_data = pca_9547 },
{ .id = "PCA9548", .driver_data = pca_9548 },
{ }
};
MODULE_DEVICE_TABLE(acpi, pca954x_acpi_ids);
#endif
#ifdef CONFIG_OF
static const struct of_device_id pca954x_of_match[] = {
{ .compatible = "nxp,pca9540", .data = &chips[pca_9540] },
@ -245,8 +261,17 @@ static int pca954x_probe(struct i2c_client *client,
match = of_match_device(of_match_ptr(pca954x_of_match), &client->dev);
if (match)
data->chip = of_device_get_match_data(&client->dev);
else
else if (id)
data->chip = &chips[id->driver_data];
else {
const struct acpi_device_id *acpi_id;
acpi_id = acpi_match_device(ACPI_PTR(pca954x_acpi_ids),
&client->dev);
if (!acpi_id)
return -ENODEV;
data->chip = &chips[acpi_id->driver_data];
}
data->last_chan = 0; /* force the first selection */
@ -321,6 +346,7 @@ static struct i2c_driver pca954x_driver = {
.name = "pca954x",
.pm = &pca954x_pm,
.of_match_table = of_match_ptr(pca954x_of_match),
.acpi_match_table = ACPI_PTR(pca954x_acpi_ids),
},
.probe = pca954x_probe,
.remove = pca954x_remove,