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hwmon: (gsc) add 16bit pre-scaled voltage mode 

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>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/1591714640-10332-3-git-send-email-tharvey@gateworks.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Tim Harvey 2020-06-09 07:57:20 -07:00 committed by Guenter Roeck
parent a37881dead
commit a4872f7a4b
2 changed files with 7 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/hwmon/gsc-hwmon.c
View File

@ -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");

3
include/linux/platform_data/gsc_hwmon.h
View File

@ -4,8 +4,9 @@
enum gsc_hwmon_mode {
mode_temperature,
mode_voltage,
mode_voltage_24bit,
mode_voltage_raw,
mode_voltage_16bit,
mode_max,
};