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hwmon: (lm95234) Add support for tempX_enable attribute

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LM95233/LM95234 support enabling temperature channels one by one.
Add support for tempX_enable attribute to be able to use that
functionality.

Reviewed-by: Tzung-Bi Shih <tzungbi@kernel.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Guenter Roeck 2024-07-10 15:57:18 -07:00
parent f27ab9f05c
commit 280220236b
1 changed files with 17 additions and 5 deletions
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22
drivers/hwmon/lm95234.c
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@ -144,6 +144,11 @@ static int lm95234_temp_write(struct device *dev, u32 attr, int channel, long va
struct regmap *regmap = data->regmap; struct regmap *regmap = data->regmap;
switch (attr) { switch (attr) {
case hwmon_temp_enable:
if (val && val != 1)
return -EINVAL;
return regmap_update_bits(regmap, LM95234_REG_ENABLE,
BIT(channel), val ? BIT(channel) : 0);
case hwmon_temp_type: case hwmon_temp_type:
if (val != 1 && val != 2) if (val != 1 && val != 2)
return -EINVAL; return -EINVAL;
@ -183,6 +188,12 @@ static int lm95234_temp_read(struct device *dev, u32 attr, int channel, long *va
int ret; int ret;
switch (attr) { switch (attr) {
case hwmon_temp_enable:
ret = regmap_read(regmap, LM95234_REG_ENABLE, &regval);
if (ret)
return ret;
*val = !!(regval & BIT(channel));
break;
case hwmon_temp_input: case hwmon_temp_input:
return lm95234_read_temp(regmap, channel, val); return lm95234_read_temp(regmap, channel, val);
case hwmon_temp_max_alarm: case hwmon_temp_max_alarm:
@ -331,6 +342,7 @@ static umode_t lm95234_is_visible(const void *_data, enum hwmon_sensor_types typ
case hwmon_temp_fault: case hwmon_temp_fault:
return channel ? 0444 : 0; return channel ? 0444 : 0;
case hwmon_temp_max: case hwmon_temp_max:
case hwmon_temp_enable:
return 0644; return 0644;
case hwmon_temp_max_hyst: case hwmon_temp_max_hyst:
return channel ? 0444 : 0644; return channel ? 0444 : 0644;
@ -350,21 +362,21 @@ static const struct hwmon_channel_info * const lm95234_info[] = {
HWMON_CHANNEL_INFO(chip, HWMON_C_UPDATE_INTERVAL), HWMON_CHANNEL_INFO(chip, HWMON_C_UPDATE_INTERVAL),
HWMON_CHANNEL_INFO(temp, HWMON_CHANNEL_INFO(temp,
HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_MAX_HYST | HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_MAX_HYST |
HWMON_T_MAX_ALARM, HWMON_T_MAX_ALARM | HWMON_T_ENABLE,
HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_MAX_HYST | HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_MAX_HYST |
HWMON_T_MAX_ALARM | HWMON_T_FAULT | HWMON_T_TYPE | HWMON_T_MAX_ALARM | HWMON_T_FAULT | HWMON_T_TYPE |
HWMON_T_CRIT | HWMON_T_CRIT_HYST | HWMON_T_CRIT | HWMON_T_CRIT_HYST |
HWMON_T_CRIT_ALARM | HWMON_T_OFFSET, HWMON_T_CRIT_ALARM | HWMON_T_OFFSET | HWMON_T_ENABLE,
HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_MAX_HYST | HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_MAX_HYST |
HWMON_T_MAX_ALARM | HWMON_T_FAULT | HWMON_T_TYPE | HWMON_T_MAX_ALARM | HWMON_T_FAULT | HWMON_T_TYPE |
HWMON_T_CRIT | HWMON_T_CRIT_HYST | HWMON_T_CRIT | HWMON_T_CRIT_HYST |
HWMON_T_CRIT_ALARM | HWMON_T_OFFSET, HWMON_T_CRIT_ALARM | HWMON_T_OFFSET | HWMON_T_ENABLE,
HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_MAX_HYST | HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_MAX_HYST |
HWMON_T_MAX_ALARM | HWMON_T_FAULT | HWMON_T_TYPE | HWMON_T_MAX_ALARM | HWMON_T_FAULT | HWMON_T_TYPE |
HWMON_T_OFFSET, HWMON_T_OFFSET | HWMON_T_ENABLE,
HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_MAX_HYST | HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_MAX_HYST |
HWMON_T_MAX_ALARM | HWMON_T_FAULT | HWMON_T_TYPE | HWMON_T_MAX_ALARM | HWMON_T_FAULT | HWMON_T_TYPE |
HWMON_T_OFFSET), HWMON_T_OFFSET | HWMON_T_ENABLE),
NULL NULL
}; };