1 // SPDX-License-Identifier: GPL-2.0-only
14 #include <linux/delay.h>
34 /* power on settling time in ms */
36 /* max time before value available in ms */
45 	int ret = i2c_smbus_write_byte_data(bh1780->client,  in bh1780_write()
49 		dev_err(&bh1780->client->dev,  in bh1780_write()
58 	int ret = i2c_smbus_read_byte_data(bh1780->client,  in bh1780_read()
61 		dev_err(&bh1780->client->dev,  in bh1780_read()
70 	int ret = i2c_smbus_read_word_data(bh1780->client,  in bh1780_read_word()
73 		dev_err(&bh1780->client->dev,  in bh1780_read_word()
108 		switch (chan->type) {  in bh1780_read_raw()
110 			pm_runtime_get_sync(&bh1780->client->dev);  in bh1780_read_raw()
114 			pm_runtime_mark_last_busy(&bh1780->client->dev);  in bh1780_read_raw()
115 			pm_runtime_put_autosuspend(&bh1780->client->dev);  in bh1780_read_raw()
120 			return -EINVAL;  in bh1780_read_raw()
127 		return -EINVAL;  in bh1780_read_raw()
149 	struct i2c_adapter *adapter = client->adapter;  in bh1780_probe()
153 		return -EIO;  in bh1780_probe()
155 	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*bh1780));  in bh1780_probe()
157 		return -ENOMEM;  in bh1780_probe()
160 	bh1780->client = client;  in bh1780_probe()
168 	pm_runtime_get_noresume(&client->dev);  in bh1780_probe()
169 	pm_runtime_set_active(&client->dev);  in bh1780_probe()
170 	pm_runtime_enable(&client->dev);  in bh1780_probe()
175 	dev_info(&client->dev,  in bh1780_probe()
180 	 * As the device takes 250 ms to even come up with a fresh  in bh1780_probe()
181 	 * measurement after power-on, do not shut it down unnecessarily.  in bh1780_probe()
182 	 * Set autosuspend to a five seconds.  in bh1780_probe()
184 	pm_runtime_set_autosuspend_delay(&client->dev, 5000);  in bh1780_probe()
185 	pm_runtime_use_autosuspend(&client->dev);  in bh1780_probe()
186 	pm_runtime_put(&client->dev);  in bh1780_probe()
188 	indio_dev->info = &bh1780_info;  in bh1780_probe()
189 	indio_dev->name = "bh1780";  in bh1780_probe()
190 	indio_dev->channels = bh1780_channels;  in bh1780_probe()
191 	indio_dev->num_channels = ARRAY_SIZE(bh1780_channels);  in bh1780_probe()
192 	indio_dev->modes = INDIO_DIRECT_MODE;  in bh1780_probe()
200 	pm_runtime_put_noidle(&client->dev);  in bh1780_probe()
201 	pm_runtime_disable(&client->dev);  in bh1780_probe()
212 	pm_runtime_get_sync(&client->dev);  in bh1780_remove()
213 	pm_runtime_put_noidle(&client->dev);  in bh1780_remove()
214 	pm_runtime_disable(&client->dev);  in bh1780_remove()
217 		dev_err(&client->dev, "failed to power off (%pe)\n",  in bh1780_remove()