5  * Based on ALS driver:
28 #define ACPI_ALS_CLASS			"als"
29 #define ACPI_ALS_DEVICE_NAME		"acpi-als"
85 static int acpi_als_read_value(struct acpi_als *als, char *prop, s32 *val)  in acpi_als_read_value()  argument
90 	status = acpi_evaluate_integer(als->device->handle, prop, NULL,  in acpi_als_read_value()
94 		acpi_evaluation_failure_warn(als->device->handle, prop, status);  in acpi_als_read_value()
106 	struct acpi_als *als = iio_priv(indio_dev);  in acpi_als_notify()  local
111 			iio_trigger_poll_nested(als->trig);  in acpi_als_notify()
116 				"Unhandled ACPI ALS event (%08x)!\n",  in acpi_als_notify()
126 	struct acpi_als *als = iio_priv(indio_dev);  in acpi_als_read_raw()  local
137 	ret = acpi_als_read_value(als, ACPI_ALS_ILLUMINANCE, &temp_val);  in acpi_als_read_raw()
154 	struct acpi_als *als = iio_priv(indio_dev);  in acpi_als_trigger_handler()  local
155 	s32 *buffer = als->evt_buffer;  in acpi_als_trigger_handler()
159 	mutex_lock(&als->lock);  in acpi_als_trigger_handler()
161 	ret = acpi_als_read_value(als, ACPI_ALS_ILLUMINANCE, &val);  in acpi_als_trigger_handler()
179 	mutex_unlock(&als->lock);  in acpi_als_trigger_handler()
189 	struct acpi_als *als;  in acpi_als_add()  local
192 	indio_dev = devm_iio_device_alloc(dev, sizeof(*als));  in acpi_als_add()
196 	als = iio_priv(indio_dev);  in acpi_als_add()
199 	als->device = device;  in acpi_als_add()
200 	mutex_init(&als->lock);  in acpi_als_add()
207 	als->trig = devm_iio_trigger_alloc(dev, "%s-dev%d", indio_dev->name,  in acpi_als_add()
209 	if (!als->trig)  in acpi_als_add()
212 	ret = devm_iio_trigger_register(dev, als->trig);  in acpi_als_add()
219 	indio_dev->trig = iio_trigger_get(als->trig);  in acpi_als_add()