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path: root/drivers/hwmon/tmp102.c
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Diffstat (limited to 'drivers/hwmon/tmp102.c')
-rw-r--r--drivers/hwmon/tmp102.c154
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, &reg);
- if (ret < 0)
- return ret;
-
- *temp = tmp102_reg_to_mC(reg);
+ err = regmap_read(tmp102->regmap, reg, &regval);
+ 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, &reg);
- 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;