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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: Michael Walle <michael@walle.cc>
[groeck: Minor alignment changes]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Michael Walle 2016-10-14 11:43:34 +02:00 committed by Guenter Roeck
parent 3d7e0a2494
commit 1b109c49b7
1 changed files with 181 additions and 122 deletions
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303
drivers/hwmon/adt7411.c
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@ -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 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;
return visible ? attr->mode : 0;
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 const struct attribute_group adt7411_group = {
.attrs = adt7411_attrs,
.is_visible = adt7411_attrs_visible,
};
__ATTRIBUTE_GROUPS(adt7411);
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;
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 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)
{
@ -382,9 +440,10 @@ 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,
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);
}