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path: root/drivers/hwmon/amc6821.c
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Diffstat (limited to 'drivers/hwmon/amc6821.c')
-rw-r--r--drivers/hwmon/amc6821.c16
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/hwmon/amc6821.c b/drivers/hwmon/amc6821.c
index 8beaea9ecbab..ec94392fcb65 100644
--- a/drivers/hwmon/amc6821.c
+++ b/drivers/hwmon/amc6821.c
@@ -312,6 +312,12 @@ static int amc6821_pwm_read(struct device *dev, u32 attr, long *val)
break;
}
return 0;
+ case hwmon_pwm_mode:
+ err = regmap_read(regmap, AMC6821_REG_CONF2, &regval);
+ if (err)
+ return err;
+ *val = !!(regval & AMC6821_CONF2_TACH_MODE);
+ return 0;
case hwmon_pwm_auto_channels_temp:
err = regmap_read(regmap, AMC6821_REG_CONF1, &regval);
if (err)
@@ -367,6 +373,13 @@ static int amc6821_pwm_write(struct device *dev, u32 attr, long val)
return regmap_update_bits(regmap, AMC6821_REG_CONF1,
AMC6821_CONF1_FDRC0 | AMC6821_CONF1_FDRC1,
mode);
+ case hwmon_pwm_mode:
+ if (val < 0 || val > 1)
+ return -EINVAL;
+ return regmap_update_bits(regmap, AMC6821_REG_CONF2,
+ AMC6821_CONF2_TACH_MODE,
+ val ? AMC6821_CONF2_TACH_MODE : 0);
+ break;
case hwmon_pwm_input:
if (val < 0 || val > 255)
return -EINVAL;
@@ -748,6 +761,7 @@ static umode_t amc6821_is_visible(const void *data,
}
case hwmon_pwm:
switch (attr) {
+ case hwmon_pwm_mode:
case hwmon_pwm_enable:
case hwmon_pwm_input:
return 0644;
@@ -774,7 +788,7 @@ static const struct hwmon_channel_info * const amc6821_info[] = {
HWMON_F_INPUT | HWMON_F_MIN | HWMON_F_MAX |
HWMON_F_TARGET | HWMON_F_PULSES | HWMON_F_FAULT),
HWMON_CHANNEL_INFO(pwm,
- HWMON_PWM_INPUT | HWMON_PWM_ENABLE |
+ HWMON_PWM_INPUT | HWMON_PWM_ENABLE | HWMON_PWM_MODE |
HWMON_PWM_AUTO_CHANNELS_TEMP),
NULL
};