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Commit c2cc9bb4 authored by Oliver Wang's avatar Oliver Wang
Browse files

input: sensors: add sensors class support for apds9930 



The userspace sensor HAL uses sensors class to interact with linux
kernel drivers. Thus add this feature in order to enable the ALPS
sensor.

Change-Id: I4e2f12b4a3cd4d24a84b82f2584752aceec3cd0a
Signed-off-by: default avatarOliver Wang <mengmeng@codeaurora.org>
parent 74f4e4d4

drivers/misc/apds993x.c

+94 −0
Original line number Diff line number Diff line
@@ -35,6 +35,7 @@ 
#include <linux/i2c/apds993x.h>

#include <linux/regulator/consumer.h>

#include <linux/of_gpio.h>

#include <linux/sensors.h>



#define APDS993X_HAL_USE_SYS_ENABLE
@@ -206,6 +207,8 @@ struct apds993x_data { 
	struct input_dev *input_dev_ps;

	struct regulator *vdd;

	struct regulator *vio;

	struct sensors_classdev als_cdev;

	struct sensors_classdev ps_cdev;



	struct apds993x_platform_data *platform_data;

	int irq;
@@ -251,6 +254,42 @@ struct apds993x_data { 
	unsigned int als_reduce;	/* flag indicate ALS 6x reduction */

};



static struct sensors_classdev sensors_light_cdev = {

	.name = "apds9930-light",

	.vendor = "avago",

	.version = 1,

	.handle = SENSORS_LIGHT_HANDLE,

	.type = SENSOR_TYPE_LIGHT,

	.max_range = "30000",

	.resolution = "0.0125",

	.sensor_power = "0.20",

	.min_delay = 1000, /* in microseconds */

	.fifo_reserved_event_count = 0,

	.fifo_max_event_count = 0,

	.enabled = 0,

	.delay_msec = 100,

	.sensors_enable = NULL,

	.sensors_poll_delay = NULL,

};



static struct sensors_classdev sensors_proximity_cdev = {

	.name = "apds9930-proximity",

	.vendor = "avago",

	.version = 1,

	.handle = SENSORS_PROXIMITY_HANDLE,

	.type = SENSOR_TYPE_PROXIMITY,

	.max_range = "5",

	.resolution = "5.0",

	.sensor_power = "3",

	.min_delay = 1000, /* in microseconds */

	.fifo_reserved_event_count = 0,

	.fifo_max_event_count = 0,

	.enabled = 0,

	.delay_msec = 100,

	.sensors_enable = NULL,

	.sensors_poll_delay = NULL,

};



/*

 * Global data

 */
@@ -1668,6 +1707,34 @@ static ssize_t apds993x_store_enable_als_sensor(struct device *dev, 
	return count;

}



static int apds993x_als_set_enable(struct sensors_classdev *sensors_cdev,

		unsigned int enable)

{

	struct apds993x_data *data = container_of(sensors_cdev,

			struct apds993x_data, als_cdev);



	if ((enable != 0) && (enable != 1)) {

		pr_err("%s: invalid value(%d)\n", __func__, enable);

		return -EINVAL;

	}



	return apds993x_enable_als_sensor(data->client, enable);

}



static int apds993x_ps_set_enable(struct sensors_classdev *sensors_cdev,

		unsigned int enable)

{

	struct apds993x_data *data = container_of(sensors_cdev,

			struct apds993x_data, ps_cdev);



	if ((enable != 0) && (enable != 1)) {

		pr_err("%s: invalid value(%d)\n", __func__, enable);

		return -EINVAL;

	}



	return apds993x_enable_ps_sensor(data->client, enable);

}



static DEVICE_ATTR(enable_als_sensor, S_IWUSR | S_IWGRP | S_IRUGO,

		apds993x_show_enable_als_sensor,

		apds993x_store_enable_als_sensor);
@@ -2305,10 +2372,37 @@ static int apds993x_probe(struct i2c_client *client, 
		goto exit_unregister_ps_ioctl;

	}



	/* Register to sensors class */

	data->als_cdev = sensors_light_cdev;

	data->als_cdev.sensors_enable = apds993x_als_set_enable;

	data->als_cdev.sensors_poll_delay = NULL;



	data->ps_cdev = sensors_proximity_cdev;

	data->ps_cdev.sensors_enable = apds993x_ps_set_enable;

	data->ps_cdev.sensors_poll_delay = NULL,



	err = sensors_classdev_register(&client->dev, &data->als_cdev);

	if (err) {

		pr_err("%s: Unable to register to sensors class: %d\n",

				__func__, err);

		goto exit_unregister_als_ioctl;

	}



	err = sensors_classdev_register(&client->dev, &data->ps_cdev);

	if (err) {

		pr_err("%s: Unable to register to sensors class: %d\n",

			       __func__, err);

		goto exit_unregister_als_class;

	}



	pr_info("%s: Support ver. %s enabled\n", __func__, DRIVER_VERSION);



	return 0;



exit_unregister_als_class:

	sensors_classdev_unregister(&data->als_cdev);

exit_unregister_als_ioctl:

	misc_deregister(&apds993x_als_device);

exit_unregister_ps_ioctl:

	misc_deregister(&apds993x_ps_device);

exit_remove_sysfs_group: