Commit 1b109c49 authored by Michael Walle's avatar Michael Walle Committed by Guenter Roeck
Browse files

hwmon: (adt7411) update to new hwmon registration API 



This is also a preparation for to support more properties like min, max and
alarm.

Signed-off-by: default avatarMichael Walle <michael@walle.cc>
[groeck: Minor alignment changes]
Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
parent 3d7e0a24

drivers/hwmon/adt7411.c

+180 −121
Original line number Diff line number Diff line
@@ -55,7 +55,7 @@ struct adt7411_data { 
	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;

};
@@ -114,85 +114,6 @@ static int adt7411_modify_bit(struct i2c_client *client, u8 reg, u8 bit, 
	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)

{
@@ -228,65 +149,157 @@ static ssize_t adt7411_set_bit(struct device *dev, 
	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 int adt7411_read_in_vdd(struct device *dev, u32 attr, long *val)

{

	struct adt7411_data *data = dev_get_drvdata(dev);

	struct i2c_client *client = data->client;

	int ret;



	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 umode_t adt7411_attrs_visible(struct kobject *kobj,

				     struct attribute *attr, int index)

static int adt7411_read_in_chan(struct device *dev, u32 attr, int channel,

				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;



	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;

	int ret;

	int lsb_reg, lsb_shift;

	int nr = channel - 1;



	return visible ? attr->mode : 0;

	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;

		}



static const struct attribute_group adt7411_group = {

	.attrs = adt7411_attrs,

	.is_visible = adt7411_attrs_visible,

};

__ATTRIBUTE_GROUPS(adt7411);

		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 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)
@@ -358,6 +371,51 @@ static int adt7411_init_device(struct adt7411_data *data) 
	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)

{
@@ -382,8 +440,9 @@ static int adt7411_probe(struct i2c_client *client, 
	/* force update on first occasion */

	data->next_update = jiffies;



	hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,

	hwmon_dev = devm_hwmon_device_register_with_info(dev, client->name,

							 data,

							 &adt7411_chip_info,

							 adt7411_groups);

	return PTR_ERR_OR_ZERO(hwmon_dev);

}

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