iio/light/acpi-als.c

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)
90 	status = acpi_evaluate_integer(als->device->handle, prop, NULL,
94 		acpi_evaluation_failure_warn(als->device->handle, prop, status);
106 	struct acpi_als *als = iio_priv(indio_dev);
111 			iio_trigger_poll_nested(als->trig);
126 	struct acpi_als *als = iio_priv(indio_dev);
137 	ret = acpi_als_read_value(als, ACPI_ALS_ILLUMINANCE, &temp_val);
154 	struct acpi_als *als = iio_priv(indio_dev);
155 	s32 *buffer = als->evt_buffer;
159 	mutex_lock(&als->lock);
161 	ret = acpi_als_read_value(als, ACPI_ALS_ILLUMINANCE, &val);
179 	mutex_unlock(&als->lock);
189 	struct acpi_als *als;
192 	indio_dev = devm_iio_device_alloc(dev, sizeof(*als));
196 	als = iio_priv(indio_dev);
199 	als->device = device;
200 	mutex_init(&als->lock);
207 	als->trig = devm_iio_trigger_alloc(dev, "%s-dev%d", indio_dev->name,
209 	if (!als->trig)
212 	ret = devm_iio_trigger_register(dev, als->trig);
219 	indio_dev->trig = iio_trigger_get(als->trig);