[PATCH 2/2] hwmon: (gsc): add 16bit pre-scaled voltage mode

Tim Harvey
2020-06-09T14:57:40Z

add a 16-bit pre-scaled voltage mode to adc and clarify that existing
pre-scaled mode is 24bit.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
---
drivers/hwmon/gsc-hwmon.c | 8 +++++---
include/linux/platform_data/gsc_hwmon.h | 3 ++-
2 files changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/hwmon/gsc-hwmon.c b/drivers/hwmon/gsc-hwmon.c
index 2137bc6..3dfe2ca 100644
--- a/drivers/hwmon/gsc-hwmon.c
+++ b/drivers/hwmon/gsc-hwmon.c
@@ -159,7 +159,7 @@ gsc_hwmon_read(struct device *dev, enum hwmon_sensor_types type, u32 attr,
return -EOPNOTSUPP;
}

- sz = (ch->mode == mode_voltage) ? 3 : 2;
+ sz = (ch->mode == mode_voltage_24bit) ? 3 : 2;
ret = regmap_bulk_read(hwmon->regmap, ch->reg, buf, sz);
if (ret)
return ret;
@@ -186,7 +186,8 @@ gsc_hwmon_read(struct device *dev, enum hwmon_sensor_types type, u32 attr,
/* adjust by uV offset */
tmp += ch->mvoffset;
break;
- case mode_voltage:
+ case mode_voltage_24bit:
+ case mode_voltage_16bit:
/* no adjustment needed */
break;
}
@@ -336,7 +337,8 @@ static int gsc_hwmon_probe(struct platform_device *pdev)
HWMON_T_LABEL;
i_temp++;
break;
- case mode_voltage:
+ case mode_voltage_24bit:
+ case mode_voltage_16bit:
case mode_voltage_raw:
if (i_in == GSC_HWMON_MAX_IN_CH) {
dev_err(gsc->dev, "too many input channels\n");
diff --git a/include/linux/platform_data/gsc_hwmon.h b/include/linux/platform_data/gsc_hwmon.h
index ec1611a..37a8f554d 100644
--- a/include/linux/platform_data/gsc_hwmon.h
+++ b/include/linux/platform_data/gsc_hwmon.h
@@ -4,8 +4,9 @@

enum gsc_hwmon_mode {
mode_temperature,
- mode_voltage,
+ mode_voltage_24bit,
mode_voltage_raw,
+ mode_voltage_16bit,
mode_max,
};

--
2.7.4