struct mutex device_lock; /* for "atomic" device accesses */
struct mutex update_lock;
unsigned long next_update;
- int vref_cached;
+ long vref_cached;
struct i2c_client *client;
bool use_ext_temp;
};
return ret;
}
-static ssize_t adt7411_show_vdd(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- struct adt7411_data *data = dev_get_drvdata(dev);
- struct i2c_client *client = data->client;
- int ret = adt7411_read_10_bit(client, ADT7411_REG_INT_TEMP_VDD_LSB,
- ADT7411_REG_VDD_MSB, 2);
-
- return ret < 0 ? ret : sprintf(buf, "%u\n", ret * 7000 / 1024);
-}
-
-static ssize_t adt7411_show_temp(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- int nr = to_sensor_dev_attr(attr)->index;
- struct adt7411_data *data = dev_get_drvdata(dev);
- struct i2c_client *client = data->client;
- int val;
- struct {
- u8 low;
- u8 high;
- } reg[2] = {
- { ADT7411_REG_INT_TEMP_VDD_LSB, ADT7411_REG_INT_TEMP_MSB },
- { ADT7411_REG_EXT_TEMP_AIN14_LSB,
- ADT7411_REG_EXT_TEMP_AIN1_MSB },
- };
-
- val = adt7411_read_10_bit(client, reg[nr].low, reg[nr].high, 0);
- if (val < 0)
- return val;
-
- val = val & 0x200 ? val - 0x400 : val; /* 10 bit signed */
-
- return sprintf(buf, "%d\n", val * 250);
-}
-
-static ssize_t adt7411_show_input(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- int nr = to_sensor_dev_attr(attr)->index;
- struct adt7411_data *data = dev_get_drvdata(dev);
- struct i2c_client *client = data->client;
- int val;
- u8 lsb_reg, lsb_shift;
-
- mutex_lock(&data->update_lock);
- if (time_after_eq(jiffies, data->next_update)) {
- val = i2c_smbus_read_byte_data(client, ADT7411_REG_CFG3);
- if (val < 0)
- goto exit_unlock;
-
- if (val & ADT7411_CFG3_REF_VDD) {
- val = adt7411_read_10_bit(client,
- ADT7411_REG_INT_TEMP_VDD_LSB,
- ADT7411_REG_VDD_MSB, 2);
- if (val < 0)
- goto exit_unlock;
-
- data->vref_cached = val * 7000 / 1024;
- } else {
- data->vref_cached = 2250;
- }
-
- data->next_update = jiffies + HZ;
- }
-
- lsb_reg = ADT7411_REG_EXT_TEMP_AIN14_LSB + (nr >> 2);
- lsb_shift = 2 * (nr & 0x03);
- val = adt7411_read_10_bit(client, lsb_reg,
- ADT7411_REG_EXT_TEMP_AIN1_MSB + nr, lsb_shift);
- if (val < 0)
- goto exit_unlock;
-
- val = sprintf(buf, "%u\n", val * data->vref_cached / 1024);
- exit_unlock:
- mutex_unlock(&data->update_lock);
- return val;
-}
-
static ssize_t adt7411_show_bit(struct device *dev,
struct device_attribute *attr, char *buf)
{
return ret < 0 ? ret : count;
}
-
#define ADT7411_BIT_ATTR(__name, __reg, __bit) \
SENSOR_DEVICE_ATTR_2(__name, S_IRUGO | S_IWUSR, adt7411_show_bit, \
adt7411_set_bit, __bit, __reg)
-static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, adt7411_show_temp, NULL, 0);
-static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, adt7411_show_temp, NULL, 1);
-static DEVICE_ATTR(in0_input, S_IRUGO, adt7411_show_vdd, NULL);
-static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, adt7411_show_input, NULL, 0);
-static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, adt7411_show_input, NULL, 1);
-static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, adt7411_show_input, NULL, 2);
-static SENSOR_DEVICE_ATTR(in4_input, S_IRUGO, adt7411_show_input, NULL, 3);
-static SENSOR_DEVICE_ATTR(in5_input, S_IRUGO, adt7411_show_input, NULL, 4);
-static SENSOR_DEVICE_ATTR(in6_input, S_IRUGO, adt7411_show_input, NULL, 5);
-static SENSOR_DEVICE_ATTR(in7_input, S_IRUGO, adt7411_show_input, NULL, 6);
-static SENSOR_DEVICE_ATTR(in8_input, S_IRUGO, adt7411_show_input, NULL, 7);
static ADT7411_BIT_ATTR(no_average, ADT7411_REG_CFG2, ADT7411_CFG2_DISABLE_AVG);
static ADT7411_BIT_ATTR(fast_sampling, ADT7411_REG_CFG3, ADT7411_CFG3_ADC_CLK_225);
static ADT7411_BIT_ATTR(adc_ref_vdd, ADT7411_REG_CFG3, ADT7411_CFG3_REF_VDD);
static struct attribute *adt7411_attrs[] = {
- &sensor_dev_attr_temp1_input.dev_attr.attr,
- &sensor_dev_attr_temp2_input.dev_attr.attr,
- &dev_attr_in0_input.attr,
- &sensor_dev_attr_in1_input.dev_attr.attr,
- &sensor_dev_attr_in2_input.dev_attr.attr,
- &sensor_dev_attr_in3_input.dev_attr.attr,
- &sensor_dev_attr_in4_input.dev_attr.attr,
- &sensor_dev_attr_in5_input.dev_attr.attr,
- &sensor_dev_attr_in6_input.dev_attr.attr,
- &sensor_dev_attr_in7_input.dev_attr.attr,
- &sensor_dev_attr_in8_input.dev_attr.attr,
&sensor_dev_attr_no_average.dev_attr.attr,
&sensor_dev_attr_fast_sampling.dev_attr.attr,
&sensor_dev_attr_adc_ref_vdd.dev_attr.attr,
NULL
};
+ATTRIBUTE_GROUPS(adt7411);
-static umode_t adt7411_attrs_visible(struct kobject *kobj,
- struct attribute *attr, int index)
+static int adt7411_read_in_vdd(struct device *dev, u32 attr, long *val)
{
- struct device *dev = container_of(kobj, struct device, kobj);
struct adt7411_data *data = dev_get_drvdata(dev);
- bool visible = true;
+ struct i2c_client *client = data->client;
+ int ret;
- if (attr == &sensor_dev_attr_temp2_input.dev_attr.attr)
- visible = data->use_ext_temp;
- else if (attr == &sensor_dev_attr_in1_input.dev_attr.attr ||
- attr == &sensor_dev_attr_in2_input.dev_attr.attr)
- visible = !data->use_ext_temp;
+ switch (attr) {
+ case hwmon_in_input:
+ ret = adt7411_read_10_bit(client, ADT7411_REG_INT_TEMP_VDD_LSB,
+ ADT7411_REG_VDD_MSB, 2);
+ if (ret < 0)
+ return ret;
+ *val = ret * 7000 / 1024;
+ return 0;
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static int adt7411_read_in_chan(struct device *dev, u32 attr, int channel,
+ long *val)
+{
+ struct adt7411_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
- return visible ? attr->mode : 0;
+ int ret;
+ int lsb_reg, lsb_shift;
+ int nr = channel - 1;
+
+ mutex_lock(&data->update_lock);
+ if (time_after_eq(jiffies, data->next_update)) {
+ ret = i2c_smbus_read_byte_data(client, ADT7411_REG_CFG3);
+ if (ret < 0)
+ goto exit_unlock;
+
+ if (ret & ADT7411_CFG3_REF_VDD) {
+ ret = adt7411_read_in_vdd(dev, hwmon_in_input,
+ &data->vref_cached);
+ if (ret < 0)
+ goto exit_unlock;
+ } else {
+ data->vref_cached = 2250;
+ }
+
+ data->next_update = jiffies + HZ;
+ }
+
+ switch (attr) {
+ case hwmon_in_input:
+ lsb_reg = ADT7411_REG_EXT_TEMP_AIN14_LSB + (nr >> 2);
+ lsb_shift = 2 * (nr & 0x03);
+ ret = adt7411_read_10_bit(client, lsb_reg,
+ ADT7411_REG_EXT_TEMP_AIN1_MSB + nr,
+ lsb_shift);
+ if (ret < 0)
+ goto exit_unlock;
+ *val = ret * data->vref_cached / 1024;
+ ret = 0;
+ break;
+ default:
+ ret = -EOPNOTSUPP;
+ break;
+ }
+ exit_unlock:
+ mutex_unlock(&data->update_lock);
+ return ret;
}
-static const struct attribute_group adt7411_group = {
- .attrs = adt7411_attrs,
- .is_visible = adt7411_attrs_visible,
-};
-__ATTRIBUTE_GROUPS(adt7411);
+static int adt7411_read_in(struct device *dev, u32 attr, int channel,
+ long *val)
+{
+ if (channel == 0)
+ return adt7411_read_in_vdd(dev, attr, val);
+ else
+ return adt7411_read_in_chan(dev, attr, channel, val);
+}
+
+static int adt7411_read_temp(struct device *dev, u32 attr, int channel,
+ long *val)
+{
+ struct adt7411_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ int ret, regl, regh;
+
+ switch (attr) {
+ case hwmon_temp_input:
+ regl = channel ? ADT7411_REG_EXT_TEMP_AIN14_LSB :
+ ADT7411_REG_INT_TEMP_VDD_LSB;
+ regh = channel ? ADT7411_REG_EXT_TEMP_AIN1_MSB :
+ ADT7411_REG_INT_TEMP_MSB;
+ ret = adt7411_read_10_bit(client, regl, regh, 0);
+ if (ret < 0)
+ return ret;
+ ret = ret & 0x200 ? ret - 0x400 : ret; /* 10 bit signed */
+ *val = ret * 250;
+ return 0;
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static int adt7411_read(struct device *dev, enum hwmon_sensor_types type,
+ u32 attr, int channel, long *val)
+{
+ switch (type) {
+ case hwmon_in:
+ return adt7411_read_in(dev, attr, channel, val);
+ case hwmon_temp:
+ return adt7411_read_temp(dev, attr, channel, val);
+ default:
+ return -EOPNOTSUPP;
+ }
+}
+
+static umode_t adt7411_is_visible(const void *_data,
+ enum hwmon_sensor_types type,
+ u32 attr, int channel)
+{
+ const struct adt7411_data *data = _data;
+
+ switch (type) {
+ case hwmon_in:
+ if (channel > 0 && channel < 3)
+ return data->use_ext_temp ? 0 : S_IRUGO;
+ else
+ return S_IRUGO;
+ case hwmon_temp:
+ if (channel == 1)
+ return data->use_ext_temp ? S_IRUGO : 0;
+ else
+ return S_IRUGO;
+ default:
+ return 0;
+ }
+}
static int adt7411_detect(struct i2c_client *client,
struct i2c_board_info *info)
return i2c_smbus_write_byte_data(data->client, ADT7411_REG_CFG1, val);
}
+static const u32 adt7411_in_config[] = {
+ HWMON_I_INPUT,
+ HWMON_I_INPUT,
+ HWMON_I_INPUT,
+ HWMON_I_INPUT,
+ HWMON_I_INPUT,
+ HWMON_I_INPUT,
+ HWMON_I_INPUT,
+ HWMON_I_INPUT,
+ HWMON_I_INPUT,
+ 0
+};
+
+static const struct hwmon_channel_info adt7411_in = {
+ .type = hwmon_in,
+ .config = adt7411_in_config,
+};
+
+static const u32 adt7411_temp_config[] = {
+ HWMON_T_INPUT,
+ HWMON_T_INPUT,
+ 0
+};
+
+static const struct hwmon_channel_info adt7411_temp = {
+ .type = hwmon_temp,
+ .config = adt7411_temp_config,
+};
+
+static const struct hwmon_channel_info *adt7411_info[] = {
+ &adt7411_in,
+ &adt7411_temp,
+ NULL
+};
+
+static const struct hwmon_ops adt7411_hwmon_ops = {
+ .is_visible = adt7411_is_visible,
+ .read = adt7411_read,
+};
+
+static const struct hwmon_chip_info adt7411_chip_info = {
+ .ops = &adt7411_hwmon_ops,
+ .info = adt7411_info,
+};
+
static int adt7411_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
/* force update on first occasion */
data->next_update = jiffies;
- hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
- data,
- adt7411_groups);
+ hwmon_dev = devm_hwmon_device_register_with_info(dev, client->name,
+ data,
+ &adt7411_chip_info,
+ adt7411_groups);
return PTR_ERR_OR_ZERO(hwmon_dev);
}
projects / platform / kernel / linux-starfive.git / commitdiff