diff options
| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2015-10-01 13:20:28 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2015-10-05 10:57:22 +0200 |
| commit | f32517bf1ae0a2de72b3f27200233bd3ad65bfeb (patch) | |
| tree | 1d5d3b86626d8fdeee7a91c8cef4da77a3e89f18 /drivers/gpio | |
| parent | gpio: pca953x: store driver_data for future use (diff) | |
| download | linux-f32517bf1ae0a2de72b3f27200233bd3ad65bfeb.tar.xz linux-f32517bf1ae0a2de72b3f27200233bd3ad65bfeb.zip | |
gpio: pca953x: support ACPI devices found on Galileo Gen2
This patch adds a support of the expandes found on Intel Galileo Gen2 board.
The platform information comes from ACPI.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/gpio-pca953x.c | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c index 27c96cea8a81..2d4892cc70fb 100644 --- a/drivers/gpio/gpio-pca953x.c +++ b/drivers/gpio/gpio-pca953x.c @@ -21,6 +21,7 @@ #ifdef CONFIG_OF_GPIO #include <linux/of_platform.h> #endif +#include <linux/acpi.h> #define PCA953X_INPUT 0 #define PCA953X_OUTPUT 1 @@ -76,6 +77,12 @@ static const struct i2c_device_id pca953x_id[] = { }; MODULE_DEVICE_TABLE(i2c, pca953x_id); +static const struct acpi_device_id pca953x_acpi_ids[] = { + { "INT3491", 16 | PCA953X_TYPE | PCA_INT, }, + { } +}; +MODULE_DEVICE_TABLE(acpi, pca953x_acpi_ids); + #define MAX_BANK 5 #define BANK_SZ 8 @@ -680,7 +687,18 @@ static int pca953x_probe(struct i2c_client *client, chip->client = client; - chip->driver_data = id->driver_data; + if (id) { + chip->driver_data = id->driver_data; + } else { + const struct acpi_device_id *id; + + id = acpi_match_device(pca953x_acpi_ids, &client->dev); + if (!id) + return -ENODEV; + + chip->driver_data = id->driver_data; + } + chip->chip_type = PCA_CHIP_TYPE(chip->driver_data); mutex_init(&chip->i2c_lock); @@ -773,6 +791,7 @@ static struct i2c_driver pca953x_driver = { .driver = { .name = "pca953x", .of_match_table = pca953x_dt_ids, + .acpi_match_table = ACPI_PTR(pca953x_acpi_ids), }, .probe = pca953x_probe, .remove = pca953x_remove, |