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| author | Guenter Roeck <linux@roeck-us.net> | 2024-07-09 23:07:19 +0200 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2024-07-31 19:43:51 +0200 |
| commit | ad231314b6f8e83799b64dd59e6fea98e3b8d36f (patch) | |
| tree | 9bd0c66165e30bd1a81e576c33fcdebc490f3f74 /drivers/hwmon/tmp464.c | |
| parent | hwmon: (adt7x10) Use multi-byte regmap operations (diff) | |
| download | linux-ad231314b6f8e83799b64dd59e6fea98e3b8d36f.tar.xz linux-ad231314b6f8e83799b64dd59e6fea98e3b8d36f.zip | |
hwmon: (tmp464) Use multi-byte regmap operations
Use multi-byte regmap operations where possible to reduce code size
and the need for mutex protection.
No functional changes.
Reviewed-by: Tzung-Bi Shih <tzungbi@kernel.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to '')
| -rw-r--r-- | drivers/hwmon/tmp464.c | 33 |
1 files changed, 15 insertions, 18 deletions
diff --git a/drivers/hwmon/tmp464.c b/drivers/hwmon/tmp464.c index 3ee1137533d6..0a7c0448835b 100644 --- a/drivers/hwmon/tmp464.c +++ b/drivers/hwmon/tmp464.c @@ -147,11 +147,11 @@ static int tmp464_temp_read(struct device *dev, u32 attr, int channel, long *val { struct tmp464_data *data = dev_get_drvdata(dev); struct regmap *regmap = data->regmap; - unsigned int regval, regval2; + unsigned int regs[2]; + unsigned int regval; + u16 regvals[2]; int err = 0; - mutex_lock(&data->update_lock); - switch (attr) { case hwmon_temp_max_alarm: err = regmap_read(regmap, TMP464_THERM_STATUS_REG, ®val); @@ -172,26 +172,27 @@ static int tmp464_temp_read(struct device *dev, u32 attr, int channel, long *val * complete. That means we have to cache the value internally * for one measurement cycle and report the cached value. */ + mutex_lock(&data->update_lock); if (!data->valid || time_after(jiffies, data->last_updated + msecs_to_jiffies(data->update_interval))) { err = regmap_read(regmap, TMP464_REMOTE_OPEN_REG, ®val); if (err < 0) - break; + goto unlock; data->open_reg = regval; data->last_updated = jiffies; data->valid = true; } *val = !!(data->open_reg & BIT(channel + 7)); +unlock: + mutex_unlock(&data->update_lock); break; case hwmon_temp_max_hyst: - err = regmap_read(regmap, TMP464_THERM_LIMIT[channel], ®val); + regs[0] = TMP464_THERM_LIMIT[channel]; + regs[1] = TMP464_TEMP_HYST_REG; + err = regmap_multi_reg_read(regmap, regs, regvals, 2); if (err < 0) break; - err = regmap_read(regmap, TMP464_TEMP_HYST_REG, ®val2); - if (err < 0) - break; - regval -= regval2; - *val = temp_from_reg(regval); + *val = temp_from_reg(regvals[0] - regvals[1]); break; case hwmon_temp_max: err = regmap_read(regmap, TMP464_THERM_LIMIT[channel], ®val); @@ -200,14 +201,12 @@ static int tmp464_temp_read(struct device *dev, u32 attr, int channel, long *val *val = temp_from_reg(regval); break; case hwmon_temp_crit_hyst: - err = regmap_read(regmap, TMP464_THERM2_LIMIT[channel], ®val); - if (err < 0) - break; - err = regmap_read(regmap, TMP464_TEMP_HYST_REG, ®val2); + regs[0] = TMP464_THERM2_LIMIT[channel]; + regs[1] = TMP464_TEMP_HYST_REG; + err = regmap_multi_reg_read(regmap, regs, regvals, 2); if (err < 0) break; - regval -= regval2; - *val = temp_from_reg(regval); + *val = temp_from_reg(regvals[0] - regvals[1]); break; case hwmon_temp_crit: err = regmap_read(regmap, TMP464_THERM2_LIMIT[channel], ®val); @@ -239,8 +238,6 @@ static int tmp464_temp_read(struct device *dev, u32 attr, int channel, long *val break; } - mutex_unlock(&data->update_lock); - return err; } |