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Commit f32517bf authored by Andy Shevchenko's avatar Andy Shevchenko Committed by Linus Walleij
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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: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent c6664149

drivers/gpio/gpio-pca953x.c

+20 −1
Original line number Original line Diff line number Diff line
@@ -21,6 +21,7 @@ 
#ifdef CONFIG_OF_GPIO

#ifdef CONFIG_OF_GPIO

#include <linux/of_platform.h>

#include <linux/of_platform.h>

#endif

#endif

#include <linux/acpi.h>





#define PCA953X_INPUT		0

#define PCA953X_INPUT		0

#define PCA953X_OUTPUT		1

#define PCA953X_OUTPUT		1
@@ -76,6 +77,12 @@ static const struct i2c_device_id pca953x_id[] = { 
};

};

MODULE_DEVICE_TABLE(i2c, 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 MAX_BANK 5

#define BANK_SZ 8

#define BANK_SZ 8
@@ -680,7 +687,18 @@ static int pca953x_probe(struct i2c_client *client, 




	chip->client = client;

	chip->client = client;





	if (id) {

		chip->driver_data = id->driver_data;

		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);

	chip->chip_type = PCA_CHIP_TYPE(chip->driver_data);





	mutex_init(&chip->i2c_lock);

	mutex_init(&chip->i2c_lock);
@@ -773,6 +791,7 @@ static struct i2c_driver pca953x_driver = { 
	.driver = {

	.driver = {

		.name	= "pca953x",

		.name	= "pca953x",

		.of_match_table = pca953x_dt_ids,

		.of_match_table = pca953x_dt_ids,

		.acpi_match_table = ACPI_PTR(pca953x_acpi_ids),

	},

	},

	.probe		= pca953x_probe,

	.probe		= pca953x_probe,

	.remove		= pca953x_remove,

	.remove		= pca953x_remove,