95 static int mcp3422_update_config(struct mcp3422 *adc, u8 newconfig)  in mcp3422_update_config()  argument
99 	ret = i2c_master_send(adc->i2c, &newconfig, 1);  in mcp3422_update_config()
101 		adc->config = newconfig;  in mcp3422_update_config()
108 static int mcp3422_read(struct mcp3422 *adc, int *value, u8 *config)  in mcp3422_read()  argument
111 	u8 sample_rate = MCP3422_SAMPLE_RATE(adc->config);  in mcp3422_read()
116 		ret = i2c_master_recv(adc->i2c, buf, 4);  in mcp3422_read()
120 		ret = i2c_master_recv(adc->i2c, buf, 3);  in mcp3422_read()
130 static int mcp3422_read_channel(struct mcp3422 *adc,  in mcp3422_read_channel()  argument
137 	mutex_lock(&adc->lock);  in mcp3422_read_channel()
139 	if (req_channel != MCP3422_CHANNEL(adc->config)) {  in mcp3422_read_channel()
140 		config = adc->config;  in mcp3422_read_channel()
144 		config |= MCP3422_PGA_VALUE(adc->pga[req_channel]);  in mcp3422_read_channel()
145 		ret = mcp3422_update_config(adc, config);  in mcp3422_read_channel()
147 			mutex_unlock(&adc->lock);  in mcp3422_read_channel()
150 		msleep(mcp3422_read_times[MCP3422_SAMPLE_RATE(adc->config)]);  in mcp3422_read_channel()
153 	ret = mcp3422_read(adc, value, &config);  in mcp3422_read_channel()
155 	mutex_unlock(&adc->lock);  in mcp3422_read_channel()
164 	struct mcp3422 *adc = iio_priv(iio);  in mcp3422_read_raw()  local
167 	u8 sample_rate = MCP3422_SAMPLE_RATE(adc->config);  in mcp3422_read_raw()
168 	u8 pga		 = MCP3422_PGA(adc->config);  in mcp3422_read_raw()
172 		err = mcp3422_read_channel(adc, channel, val1);  in mcp3422_read_raw()
184 		*val1 = mcp3422_sample_rates[MCP3422_SAMPLE_RATE(adc->config)];  in mcp3422_read_raw()
198 	struct mcp3422 *adc = iio_priv(iio);  in mcp3422_write_raw()  local
200 	u8 config = adc->config;  in mcp3422_write_raw()
212 				adc->pga[req_channel] = i;  in mcp3422_write_raw()
217 				config |= MCP3422_PGA_VALUE(adc->pga[req_channel]);  in mcp3422_write_raw()
219 				return mcp3422_update_config(adc, config);  in mcp3422_write_raw()
236 			if (adc->id > 4)  in mcp3422_write_raw()
249 		return mcp3422_update_config(adc, config);  in mcp3422_write_raw()
274 	struct mcp3422 *adc = iio_priv(dev_to_iio_dev(dev));  in mcp3422_show_samp_freqs()  local
276 	if (adc->id > 4)  in mcp3422_show_samp_freqs()
285 	struct mcp3422 *adc = iio_priv(dev_to_iio_dev(dev));  in mcp3422_show_scales()  local
286 	u8 sample_rate = MCP3422_SAMPLE_RATE(adc->config);  in mcp3422_show_scales()
337 	struct mcp3422 *adc;  in mcp3422_probe()  local
344 	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*adc));  in mcp3422_probe()
348 	adc = iio_priv(indio_dev);  in mcp3422_probe()
349 	adc->i2c = client;  in mcp3422_probe()
350 	adc->id = (u8)(id->driver_data);  in mcp3422_probe()
352 	mutex_init(&adc->lock);  in mcp3422_probe()
358 	switch (adc->id) {  in mcp3422_probe()
383 	err = mcp3422_update_config(adc, config);  in mcp3422_probe()