54 static int ltr501_drdy(struct ltr501_data *data, u8 drdy_mask)  in ltr501_drdy()  argument
60 		ret = i2c_smbus_read_byte_data(data->client,  in ltr501_drdy()
69 	dev_err(&data->client->dev, "ltr501_drdy() failed, data not ready\n");  in ltr501_drdy()
73 static int ltr501_read_als(struct ltr501_data *data, __le16 buf[2])  in ltr501_read_als()  argument
75 	int ret = ltr501_drdy(data, LTR501_STATUS_ALS_RDY);  in ltr501_read_als()
79 	return i2c_smbus_read_i2c_block_data(data->client,  in ltr501_read_als()
83 static int ltr501_read_ps(struct ltr501_data *data)  in ltr501_read_ps()  argument
85 	int ret = ltr501_drdy(data, LTR501_STATUS_PS_RDY);  in ltr501_read_ps()
88 	return i2c_smbus_read_word_data(data->client, LTR501_PS_DATA);  in ltr501_read_ps()
135 	struct ltr501_data *data = iio_priv(indio_dev);  in ltr501_read_raw()  local
146 			mutex_lock(&data->lock_als);  in ltr501_read_raw()
147 			ret = ltr501_read_als(data, buf);  in ltr501_read_raw()
148 			mutex_unlock(&data->lock_als);  in ltr501_read_raw()
155 			mutex_lock(&data->lock_ps);  in ltr501_read_raw()
156 			ret = ltr501_read_ps(data);  in ltr501_read_raw()
157 			mutex_unlock(&data->lock_ps);  in ltr501_read_raw()
168 			if (data->als_contr & LTR501_CONTR_ALS_GAIN_MASK) {  in ltr501_read_raw()
178 			i = (data->ps_contr & LTR501_CONTR_PS_GAIN_MASK) >>  in ltr501_read_raw()
205 	struct ltr501_data *data = iio_priv(indio_dev);  in ltr501_write_raw()  local
216 				data->als_contr |= LTR501_CONTR_ALS_GAIN_MASK;  in ltr501_write_raw()
218 				data->als_contr &= ~LTR501_CONTR_ALS_GAIN_MASK;  in ltr501_write_raw()
221 			return i2c_smbus_write_byte_data(data->client,  in ltr501_write_raw()
222 				LTR501_ALS_CONTR, data->als_contr);  in ltr501_write_raw()
227 			data->ps_contr &= ~LTR501_CONTR_PS_GAIN_MASK;  in ltr501_write_raw()
228 			data->ps_contr |= i << LTR501_CONTR_PS_GAIN_SHIFT;  in ltr501_write_raw()
229 			return i2c_smbus_write_byte_data(data->client,  in ltr501_write_raw()
230 				LTR501_PS_CONTR, data->ps_contr);  in ltr501_write_raw()
271 	struct ltr501_data *data = iio_priv(indio_dev);  in ltr501_trigger_handler()  local
287 	ret = ltr501_drdy(data, mask);  in ltr501_trigger_handler()
292 		ret = i2c_smbus_read_i2c_block_data(data->client,  in ltr501_trigger_handler()
303 		ret = i2c_smbus_read_word_data(data->client, LTR501_PS_DATA);  in ltr501_trigger_handler()
318 static int ltr501_init(struct ltr501_data *data)  in ltr501_init()  argument
322 	ret = i2c_smbus_read_byte_data(data->client, LTR501_ALS_CONTR);  in ltr501_init()
325 	data->als_contr = ret | LTR501_CONTR_ACTIVE;  in ltr501_init()
327 	ret = i2c_smbus_read_byte_data(data->client, LTR501_PS_CONTR);  in ltr501_init()
330 	data->ps_contr = ret | LTR501_CONTR_ACTIVE;  in ltr501_init()
332 	return ltr501_write_contr(data->client, data->als_contr,  in ltr501_init()
333 		data->ps_contr);  in ltr501_init()
336 static int ltr501_powerdown(struct ltr501_data *data)  in ltr501_powerdown()  argument
338 	return ltr501_write_contr(data->client,  in ltr501_powerdown()
339 				  data->als_contr & ~LTR501_CONTR_ACTIVE,  in ltr501_powerdown()
340 				  data->ps_contr & ~LTR501_CONTR_ACTIVE);  in ltr501_powerdown()
346 	struct ltr501_data *data;  in ltr501_probe()  local
350 	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));  in ltr501_probe()
354 	data = iio_priv(indio_dev);  in ltr501_probe()
356 	data->client = client;  in ltr501_probe()
357 	mutex_init(&data->lock_als);  in ltr501_probe()
358 	mutex_init(&data->lock_ps);  in ltr501_probe()
360 	ret = i2c_smbus_read_byte_data(data->client, LTR501_PART_ID);  in ltr501_probe()
373 	ret = ltr501_init(data);  in ltr501_probe()
391 	ltr501_powerdown(data);  in ltr501_probe()
409 	struct ltr501_data *data = iio_priv(i2c_get_clientdata(  in ltr501_suspend()  local
411 	return ltr501_powerdown(data);  in ltr501_suspend()
416 	struct ltr501_data *data = iio_priv(i2c_get_clientdata(  in ltr501_resume()  local
419 	return ltr501_write_contr(data->client, data->als_contr,  in ltr501_resume()
420 		data->ps_contr);  in ltr501_resume()