diff options
Diffstat (limited to 'drivers/hwmon/tmp102.c')
| -rw-r--r-- | drivers/hwmon/tmp102.c | 154 |
1 files changed, 90 insertions, 64 deletions
diff --git a/drivers/hwmon/tmp102.c b/drivers/hwmon/tmp102.c index 8479ac5eb853..36bba2a816a4 100644 --- a/drivers/hwmon/tmp102.c +++ b/drivers/hwmon/tmp102.c @@ -25,7 +25,6 @@ #include <linux/device.h> #include <linux/jiffies.h> #include <linux/regmap.h> -#include <linux/thermal.h> #include <linux/of.h> #define DRIVER_NAME "tmp102" @@ -79,84 +78,113 @@ static inline u16 tmp102_mC_to_reg(int val) return (val * 128) / 1000; } -static int tmp102_read_temp(void *dev, int *temp) +static int tmp102_read(struct device *dev, enum hwmon_sensor_types type, + u32 attr, int channel, long *temp) { struct tmp102 *tmp102 = dev_get_drvdata(dev); - unsigned int reg; - int ret; - - if (time_before(jiffies, tmp102->ready_time)) { - dev_dbg(dev, "%s: Conversion not ready yet..\n", __func__); - return -EAGAIN; + unsigned int regval; + int err, reg; + + switch (attr) { + case hwmon_temp_input: + /* Is it too early to return a conversion ? */ + if (time_before(jiffies, tmp102->ready_time)) { + dev_dbg(dev, "%s: Conversion not ready yet..\n", __func__); + return -EAGAIN; + } + reg = TMP102_TEMP_REG; + break; + case hwmon_temp_max_hyst: + reg = TMP102_TLOW_REG; + break; + case hwmon_temp_max: + reg = TMP102_THIGH_REG; + break; + default: + return -EOPNOTSUPP; } - ret = regmap_read(tmp102->regmap, TMP102_TEMP_REG, ®); - if (ret < 0) - return ret; - - *temp = tmp102_reg_to_mC(reg); + err = regmap_read(tmp102->regmap, reg, ®val); + if (err < 0) + return err; + *temp = tmp102_reg_to_mC(regval); return 0; } -static ssize_t tmp102_show_temp(struct device *dev, - struct device_attribute *attr, - char *buf) +static int tmp102_write(struct device *dev, enum hwmon_sensor_types type, + u32 attr, int channel, long temp) { - struct sensor_device_attribute *sda = to_sensor_dev_attr(attr); struct tmp102 *tmp102 = dev_get_drvdata(dev); - int regaddr = sda->index; - unsigned int reg; - int err; - - if (regaddr == TMP102_TEMP_REG && - time_before(jiffies, tmp102->ready_time)) - return -EAGAIN; - - err = regmap_read(tmp102->regmap, regaddr, ®); - if (err < 0) - return err; + int reg; + + switch (attr) { + case hwmon_temp_max_hyst: + reg = TMP102_TLOW_REG; + break; + case hwmon_temp_max: + reg = TMP102_THIGH_REG; + break; + default: + return -EOPNOTSUPP; + } - return sprintf(buf, "%d\n", tmp102_reg_to_mC(reg)); + temp = clamp_val(temp, -256000, 255000); + return regmap_write(tmp102->regmap, reg, tmp102_mC_to_reg(temp)); } -static ssize_t tmp102_set_temp(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) +static umode_t tmp102_is_visible(const void *data, enum hwmon_sensor_types type, + u32 attr, int channel) { - struct sensor_device_attribute *sda = to_sensor_dev_attr(attr); - struct tmp102 *tmp102 = dev_get_drvdata(dev); - int reg = sda->index; - long val; - int err; - - if (kstrtol(buf, 10, &val) < 0) - return -EINVAL; - val = clamp_val(val, -256000, 255000); - - err = regmap_write(tmp102->regmap, reg, tmp102_mC_to_reg(val)); - return err ? : count; + if (type != hwmon_temp) + return 0; + + switch (attr) { + case hwmon_temp_input: + return S_IRUGO; + case hwmon_temp_max_hyst: + case hwmon_temp_max: + return S_IRUGO | S_IWUSR; + default: + return 0; + } } -static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, tmp102_show_temp, NULL, - TMP102_TEMP_REG); +static u32 tmp102_chip_config[] = { + HWMON_C_REGISTER_TZ, + 0 +}; + +static const struct hwmon_channel_info tmp102_chip = { + .type = hwmon_chip, + .config = tmp102_chip_config, +}; -static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IWUSR | S_IRUGO, tmp102_show_temp, - tmp102_set_temp, TMP102_TLOW_REG); +static u32 tmp102_temp_config[] = { + HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_MAX_HYST, + 0 +}; -static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, tmp102_show_temp, - tmp102_set_temp, TMP102_THIGH_REG); +static const struct hwmon_channel_info tmp102_temp = { + .type = hwmon_temp, + .config = tmp102_temp_config, +}; -static struct attribute *tmp102_attrs[] = { - &sensor_dev_attr_temp1_input.dev_attr.attr, - &sensor_dev_attr_temp1_max_hyst.dev_attr.attr, - &sensor_dev_attr_temp1_max.dev_attr.attr, +static const struct hwmon_channel_info *tmp102_info[] = { + &tmp102_chip, + &tmp102_temp, NULL }; -ATTRIBUTE_GROUPS(tmp102); -static const struct thermal_zone_of_device_ops tmp102_of_thermal_ops = { - .get_temp = tmp102_read_temp, +static const struct hwmon_ops tmp102_hwmon_ops = { + .is_visible = tmp102_is_visible, + .read = tmp102_read, + .write = tmp102_write, +}; + +static const struct hwmon_chip_info tmp102_chip_info = { + .ops = &tmp102_hwmon_ops, + .info = tmp102_info, }; static void tmp102_restore_config(void *data) @@ -188,7 +216,7 @@ static const struct regmap_config tmp102_regmap_config = { }; static int tmp102_probe(struct i2c_client *client, - const struct i2c_device_id *id) + const struct i2c_device_id *id) { struct device *dev = &client->dev; struct device *hwmon_dev; @@ -249,16 +277,14 @@ static int tmp102_probe(struct i2c_client *client, tmp102->ready_time += msecs_to_jiffies(CONVERSION_TIME_MS); } - hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name, - tmp102, - tmp102_groups); + hwmon_dev = devm_hwmon_device_register_with_info(dev, client->name, + tmp102, + &tmp102_chip_info, + NULL); if (IS_ERR(hwmon_dev)) { dev_dbg(dev, "unable to register hwmon device\n"); return PTR_ERR(hwmon_dev); } - devm_thermal_zone_of_sensor_register(hwmon_dev, 0, hwmon_dev, - &tmp102_of_thermal_ops); - dev_info(dev, "initialized\n"); return 0; |