diff options
Diffstat (limited to 'drivers/hwmon/tmp464.c')
| -rw-r--r-- | drivers/hwmon/tmp464.c | 50 |
1 files changed, 15 insertions, 35 deletions
diff --git a/drivers/hwmon/tmp464.c b/drivers/hwmon/tmp464.c index 4b79c3f4d9fe..98f2576d94c6 100644 --- a/drivers/hwmon/tmp464.c +++ b/drivers/hwmon/tmp464.c @@ -13,8 +13,7 @@ #include <linux/i2c.h> #include <linux/init.h> #include <linux/module.h> -#include <linux/mutex.h> -#include <linux/of_device.h> +#include <linux/of.h> #include <linux/regmap.h> #include <linux/slab.h> @@ -92,7 +91,6 @@ struct tmp464_channel { struct tmp464_data { struct regmap *regmap; - struct mutex update_lock; int channels; s16 config_orig; u16 open_reg; @@ -147,11 +145,11 @@ 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); @@ -184,14 +182,12 @@ static int tmp464_temp_read(struct device *dev, u32 attr, int channel, long *val *val = !!(data->open_reg & BIT(channel + 7)); break; case hwmon_temp_max_hyst: - err = regmap_read(regmap, TMP464_THERM_LIMIT[channel], ®val); - if (err < 0) - break; - err = regmap_read(regmap, TMP464_TEMP_HYST_REG, ®val2); + 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; - 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 +196,12 @@ 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 +233,6 @@ static int tmp464_temp_read(struct device *dev, u32 attr, int channel, long *val break; } - mutex_unlock(&data->update_lock); - return err; } @@ -348,8 +340,6 @@ static int tmp464_write(struct device *dev, enum hwmon_sensor_types type, struct tmp464_data *data = dev_get_drvdata(dev); int err; - mutex_lock(&data->update_lock); - switch (type) { case hwmon_chip: err = tmp464_chip_write(data, attr, channel, val); @@ -362,8 +352,6 @@ static int tmp464_write(struct device *dev, enum hwmon_sensor_types type, break; } - mutex_unlock(&data->update_lock); - return err; } @@ -565,18 +553,15 @@ static int tmp464_probe_child_from_dt(struct device *dev, static int tmp464_probe_from_dt(struct device *dev, struct tmp464_data *data) { const struct device_node *np = dev->of_node; - struct device_node *child; int err; - for_each_child_of_node(np, child) { + for_each_child_of_node_scoped(np, child) { if (strcmp(child->name, "channel")) continue; err = tmp464_probe_child_from_dt(dev, child, data); - if (err) { - of_node_put(child); + if (err) return err; - } } return 0; @@ -664,12 +649,7 @@ static int tmp464_probe(struct i2c_client *client) if (!data) return -ENOMEM; - mutex_init(&data->update_lock); - - if (dev->of_node) - data->channels = (int)(unsigned long)of_device_get_match_data(&client->dev); - else - data->channels = i2c_match_id(tmp464_id, client)->driver_data; + data->channels = (int)(unsigned long)i2c_get_match_data(client); data->regmap = devm_regmap_init_i2c(client, &tmp464_regmap_config); if (IS_ERR(data->regmap)) |