Commit b8a34582 authored by Shubhrajyoti Datta's avatar Shubhrajyoti Datta Committed by Bartosz Golaszewski
Browse files

gpio: pca9570: add a platform data structure 



Add struct pca9570_platform_data for adding the platform data
structure. Also modify the existing structs for pca9570 and pca9571

Signed-off-by: default avatarShubhrajyoti Datta <shubhrajyoti.datta@amd.com>
Signed-off-by: default avatarBartosz Golaszewski <bartosz.golaszewski@linaro.org>
parent f7ec74c1

drivers/gpio/gpio-pca9570.c

+26 −5
Original line number Diff line number Diff line
@@ -15,14 +15,26 @@ 
#include <linux/mutex.h>

#include <linux/property.h>



/**

 * struct pca9570_platform_data - GPIO platformdata

 * @ngpio: no of gpios

 * @command: Command to be sent

 */

struct pca9570_platform_data {

	u16 ngpio;

	u32 command;

};



/**

 * struct pca9570 - GPIO driver data

 * @chip: GPIO controller chip

 * @p_data: GPIO controller platform data

 * @lock: Protects write sequences

 * @out: Buffer for device register

 */

struct pca9570 {

	struct gpio_chip chip;

	const struct pca9570_platform_data *p_data;

	struct mutex lock;

	u8 out;

};
@@ -106,7 +118,8 @@ static int pca9570_probe(struct i2c_client *client) 
	gpio->chip.get = pca9570_get;

	gpio->chip.set = pca9570_set;

	gpio->chip.base = -1;

	gpio->chip.ngpio = (uintptr_t)device_get_match_data(&client->dev);

	gpio->p_data = device_get_match_data(&client->dev);

	gpio->chip.ngpio = gpio->p_data->ngpio;

	gpio->chip.can_sleep = true;



	mutex_init(&gpio->lock);
@@ -119,16 +132,24 @@ static int pca9570_probe(struct i2c_client *client) 
	return devm_gpiochip_add_data(&client->dev, &gpio->chip, gpio);

}



static const struct pca9570_platform_data pca9570_gpio = {

	.ngpio = 4,

};



static const struct pca9570_platform_data pca9571_gpio = {

	.ngpio = 8,

};



static const struct i2c_device_id pca9570_id_table[] = {

	{ "pca9570", 4 },

	{ "pca9571", 8 },

	{ "pca9570", (kernel_ulong_t)&pca9570_gpio},

	{ "pca9571", (kernel_ulong_t)&pca9571_gpio },

	{ /* sentinel */ }

};

MODULE_DEVICE_TABLE(i2c, pca9570_id_table);



static const struct of_device_id pca9570_of_match_table[] = {

	{ .compatible = "nxp,pca9570", .data = (void *)4 },

	{ .compatible = "nxp,pca9571", .data = (void *)8 },

	{ .compatible = "nxp,pca9570", .data = &pca9570_gpio },

	{ .compatible = "nxp,pca9571", .data = &pca9571_gpio },

	{ /* sentinel */ }

};

MODULE_DEVICE_TABLE(of, pca9570_of_match_table);