hwmon: (adc128d818) Preserve operation mode (c72eeabd) · Commits · 戴 / test

Preserve chip operation mode if no mode is specified via devicetree. This enables operation when chip configuration is done by BIOS/ROMMON. Signed-off-by:

Alexander Koch <mail@alexanderkoch.net> Acked-by:

Michael Hornung <mhornung.linux@gmail.com> Signed-off-by:

Guenter Roeck <linux@roeck-us.net>

drivers/hwmon/adc128d818.c

+5 −2

Original line number	Diff line number	Diff line
		@@ -491,7 +491,7 @@ static int adc128_probe(struct i2c_client *client,
		data->vref = 2560; /* 2.56V, in mV */
		}

		/* Operation mode is optional and defaults to mode 0 */
		/* Operation mode is optional. If unspecified, keep current mode */
		if (of_property_read_u8(dev->of_node, "ti,mode", &data->mode) == 0) {
		if (data->mode > 3) {
		dev_err(dev, "invalid operation mode %d\n",
		@@ -500,7 +500,10 @@ static int adc128_probe(struct i2c_client *client,
		goto error;
		}
		} else {
		data->mode = 0;
		err = i2c_smbus_read_byte_data(client, ADC128_REG_CONFIG_ADV);
		if (err < 0)
		goto error;
		data->mode = (err >> 1) & ADC128_REG_MASK;
		}

		data->client = client;

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