3  * The LTC2309 is an 8-Channel, 12-Bit SAR ADC with an I2C Interface.
30  * struct ltc2309 - internal device data structure
36 struct ltc2309 {  struct
102 static int ltc2309_read_raw_channel(struct ltc2309 *ltc2309,  in ltc2309_read_raw_channel()  argument
113 	ret = i2c_smbus_write_byte(ltc2309->client, din);  in ltc2309_read_raw_channel()
115 		dev_err(ltc2309->dev, "i2c command failed: %pe\n",  in ltc2309_read_raw_channel()
120 	ret = i2c_master_recv(ltc2309->client, (char *)&buf, 2);  in ltc2309_read_raw_channel()
122 		dev_err(ltc2309->dev, "i2c read failed: %pe\n", ERR_PTR(ret));  in ltc2309_read_raw_channel()
135 	struct ltc2309 *ltc2309 = iio_priv(indio_dev);  in ltc2309_read_raw()  local
140 		mutex_lock(&ltc2309->lock);  in ltc2309_read_raw()
141 		ret = ltc2309_read_raw_channel(ltc2309, chan->address, val);  in ltc2309_read_raw()
142 		mutex_unlock(&ltc2309->lock);  in ltc2309_read_raw()
147 		*val = ltc2309->vref_mv;  in ltc2309_read_raw()
162 	struct ltc2309 *ltc2309;  in ltc2309_probe()  local
165 	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*ltc2309));  in ltc2309_probe()
169 	ltc2309 = iio_priv(indio_dev);  in ltc2309_probe()
170 	ltc2309->dev = &indio_dev->dev;  in ltc2309_probe()
171 	ltc2309->client = client;  in ltc2309_probe()
173 	indio_dev->name = "ltc2309";  in ltc2309_probe()
181 		return dev_err_probe(ltc2309->dev, ret,  in ltc2309_probe()
184 	ltc2309->vref_mv = ret == -ENODEV ? LTC2309_INTERNAL_REF_MV : ret / 1000;  in ltc2309_probe()
186 	mutex_init(&ltc2309->lock);  in ltc2309_probe()
192 	{ .compatible = "lltc,ltc2309" },
198 	{ "ltc2309" },
205 		.name = "ltc2309",
214 MODULE_DESCRIPTION("Linear Technology LTC2309 ADC");