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authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2015-10-01 14:20:28 +0300
committerLinus Walleij <linus.walleij@linaro.org>2015-10-05 11:57:22 +0300
commitf32517bf1ae0a2de72b3f27200233bd3ad65bfeb (patch)
tree1d5d3b86626d8fdeee7a91c8cef4da77a3e89f18 /drivers
parentc6664149af2939b8bbaef0711b3ca5469bed33fb (diff)
downloadlinux-f32517bf1ae0a2de72b3f27200233bd3ad65bfeb.tar.xz
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')
-rw-r--r--drivers/gpio/gpio-pca953x.c21
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,