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author | Michael Walle <michael@walle.cc> | 2016-10-14 11:43:34 +0200 |
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committer | Guenter Roeck <linux@roeck-us.net> | 2016-12-02 13:28:15 -0800 |
commit | 1b109c49b72dc3cb8392bbc22bad662f71b8fd80 (patch) | |
tree | 95ee985bdf0f911c8ad361710a9c7ebd11758d7a /drivers/hwmon/adt7411.c | |
parent | 3d7e0a24947c076a6cf6080c5f076c60ae8d9543 (diff) | |
download | linux-stable-1b109c49b72dc3cb8392bbc22bad662f71b8fd80.tar.gz linux-stable-1b109c49b72dc3cb8392bbc22bad662f71b8fd80.tar.bz2 linux-stable-1b109c49b72dc3cb8392bbc22bad662f71b8fd80.zip |
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>
Diffstat (limited to 'drivers/hwmon/adt7411.c')
-rw-r--r-- | drivers/hwmon/adt7411.c | 301 |
1 files changed, 180 insertions, 121 deletions
diff --git a/drivers/hwmon/adt7411.c b/drivers/hwmon/adt7411.c index 812fbc00f693..bdeaece9641d 100644 --- a/drivers/hwmon/adt7411.c +++ b/drivers/hwmon/adt7411.c @@ -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; + 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) @@ -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); } |