diff options
Diffstat (limited to 'drivers/hwmon/adt7411.c')
| -rw-r--r-- | drivers/hwmon/adt7411.c | 720 |
1 files changed, 720 insertions, 0 deletions
diff --git a/drivers/hwmon/adt7411.c b/drivers/hwmon/adt7411.c new file mode 100644 index 000000000..bf5c5618f --- /dev/null +++ b/drivers/hwmon/adt7411.c @@ -0,0 +1,720 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Driver for the ADT7411 (I2C/SPI 8 channel 10 bit ADC & temperature-sensor) + * + * Copyright (C) 2008, 2010 Pengutronix + * + * TODO: SPI, use power-down mode for suspend?, interrupt handling? + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/err.h> +#include <linux/mutex.h> +#include <linux/jiffies.h> +#include <linux/i2c.h> +#include <linux/hwmon.h> +#include <linux/hwmon-sysfs.h> +#include <linux/slab.h> + +#define ADT7411_REG_STAT_1 0x00 +#define ADT7411_STAT_1_INT_TEMP_HIGH BIT(0) +#define ADT7411_STAT_1_INT_TEMP_LOW BIT(1) +#define ADT7411_STAT_1_EXT_TEMP_HIGH_AIN1 BIT(2) +#define ADT7411_STAT_1_EXT_TEMP_LOW BIT(3) +#define ADT7411_STAT_1_EXT_TEMP_FAULT BIT(4) +#define ADT7411_STAT_1_AIN2 BIT(5) +#define ADT7411_STAT_1_AIN3 BIT(6) +#define ADT7411_STAT_1_AIN4 BIT(7) +#define ADT7411_REG_STAT_2 0x01 +#define ADT7411_STAT_2_AIN5 BIT(0) +#define ADT7411_STAT_2_AIN6 BIT(1) +#define ADT7411_STAT_2_AIN7 BIT(2) +#define ADT7411_STAT_2_AIN8 BIT(3) +#define ADT7411_STAT_2_VDD BIT(4) +#define ADT7411_REG_INT_TEMP_VDD_LSB 0x03 +#define ADT7411_REG_EXT_TEMP_AIN14_LSB 0x04 +#define ADT7411_REG_VDD_MSB 0x06 +#define ADT7411_REG_INT_TEMP_MSB 0x07 +#define ADT7411_REG_EXT_TEMP_AIN1_MSB 0x08 + +#define ADT7411_REG_CFG1 0x18 +#define ADT7411_CFG1_START_MONITOR BIT(0) +#define ADT7411_CFG1_RESERVED_BIT1 BIT(1) +#define ADT7411_CFG1_EXT_TDM BIT(2) +#define ADT7411_CFG1_RESERVED_BIT3 BIT(3) + +#define ADT7411_REG_CFG2 0x19 +#define ADT7411_CFG2_DISABLE_AVG BIT(5) + +#define ADT7411_REG_CFG3 0x1a +#define ADT7411_CFG3_ADC_CLK_225 BIT(0) +#define ADT7411_CFG3_RESERVED_BIT1 BIT(1) +#define ADT7411_CFG3_RESERVED_BIT2 BIT(2) +#define ADT7411_CFG3_RESERVED_BIT3 BIT(3) +#define ADT7411_CFG3_REF_VDD BIT(4) + +#define ADT7411_REG_VDD_HIGH 0x23 +#define ADT7411_REG_VDD_LOW 0x24 +#define ADT7411_REG_TEMP_HIGH(nr) (0x25 + 2 * (nr)) +#define ADT7411_REG_TEMP_LOW(nr) (0x26 + 2 * (nr)) +#define ADT7411_REG_IN_HIGH(nr) ((nr) > 1 \ + ? 0x2b + 2 * ((nr)-2) \ + : 0x27) +#define ADT7411_REG_IN_LOW(nr) ((nr) > 1 \ + ? 0x2c + 2 * ((nr)-2) \ + : 0x28) + +#define ADT7411_REG_DEVICE_ID 0x4d +#define ADT7411_REG_MANUFACTURER_ID 0x4e + +#define ADT7411_DEVICE_ID 0x2 +#define ADT7411_MANUFACTURER_ID 0x41 + +static const unsigned short normal_i2c[] = { 0x48, 0x4a, 0x4b, I2C_CLIENT_END }; + +static const u8 adt7411_in_alarm_reg[] = { + ADT7411_REG_STAT_2, + ADT7411_REG_STAT_1, + ADT7411_REG_STAT_1, + ADT7411_REG_STAT_1, + ADT7411_REG_STAT_1, + ADT7411_REG_STAT_2, + ADT7411_REG_STAT_2, + ADT7411_REG_STAT_2, + ADT7411_REG_STAT_2, +}; + +static const u8 adt7411_in_alarm_bits[] = { + ADT7411_STAT_2_VDD, + ADT7411_STAT_1_EXT_TEMP_HIGH_AIN1, + ADT7411_STAT_1_AIN2, + ADT7411_STAT_1_AIN3, + ADT7411_STAT_1_AIN4, + ADT7411_STAT_2_AIN5, + ADT7411_STAT_2_AIN6, + ADT7411_STAT_2_AIN7, + ADT7411_STAT_2_AIN8, +}; + +struct adt7411_data { + struct mutex device_lock; /* for "atomic" device accesses */ + struct mutex update_lock; + unsigned long next_update; + long vref_cached; + struct i2c_client *client; + bool use_ext_temp; +}; + +/* + * When reading a register containing (up to 4) lsb, all associated + * msb-registers get locked by the hardware. After _one_ of those msb is read, + * _all_ are unlocked. In order to use this locking correctly, reading lsb/msb + * is protected here with a mutex, too. + */ +static int adt7411_read_10_bit(struct i2c_client *client, u8 lsb_reg, + u8 msb_reg, u8 lsb_shift) +{ + struct adt7411_data *data = i2c_get_clientdata(client); + int val, tmp; + + mutex_lock(&data->device_lock); + + val = i2c_smbus_read_byte_data(client, lsb_reg); + if (val < 0) + goto exit_unlock; + + tmp = (val >> lsb_shift) & 3; + val = i2c_smbus_read_byte_data(client, msb_reg); + + if (val >= 0) + val = (val << 2) | tmp; + + exit_unlock: + mutex_unlock(&data->device_lock); + + return val; +} + +static int adt7411_modify_bit(struct i2c_client *client, u8 reg, u8 bit, + bool flag) +{ + struct adt7411_data *data = i2c_get_clientdata(client); + int ret, val; + + mutex_lock(&data->device_lock); + + ret = i2c_smbus_read_byte_data(client, reg); + if (ret < 0) + goto exit_unlock; + + if (flag) + val = ret | bit; + else + val = ret & ~bit; + + ret = i2c_smbus_write_byte_data(client, reg, val); + + exit_unlock: + mutex_unlock(&data->device_lock); + return ret; +} + +static ssize_t adt7411_show_bit(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct sensor_device_attribute_2 *attr2 = to_sensor_dev_attr_2(attr); + struct adt7411_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + int ret = i2c_smbus_read_byte_data(client, attr2->index); + + return ret < 0 ? ret : sprintf(buf, "%u\n", !!(ret & attr2->nr)); +} + +static ssize_t adt7411_set_bit(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) +{ + struct sensor_device_attribute_2 *s_attr2 = to_sensor_dev_attr_2(attr); + struct adt7411_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + int ret; + unsigned long flag; + + ret = kstrtoul(buf, 0, &flag); + if (ret || flag > 1) + return -EINVAL; + + ret = adt7411_modify_bit(client, s_attr2->index, s_attr2->nr, flag); + + /* force update */ + mutex_lock(&data->update_lock); + data->next_update = jiffies; + mutex_unlock(&data->update_lock); + + 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 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_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_alarm(struct device *dev, int channel, long *val) +{ + struct adt7411_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + int ret; + + ret = i2c_smbus_read_byte_data(client, adt7411_in_alarm_reg[channel]); + if (ret < 0) + return ret; + *val = !!(ret & adt7411_in_alarm_bits[channel]); + return 0; +} + +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; + case hwmon_in_min: + ret = i2c_smbus_read_byte_data(client, ADT7411_REG_VDD_LOW); + if (ret < 0) + return ret; + *val = ret * 7000 / 256; + return 0; + case hwmon_in_max: + ret = i2c_smbus_read_byte_data(client, ADT7411_REG_VDD_HIGH); + if (ret < 0) + return ret; + *val = ret * 7000 / 256; + return 0; + case hwmon_in_alarm: + return adt7411_read_in_alarm(dev, 0, val); + default: + return -EOPNOTSUPP; + } +} + +static int adt7411_update_vref(struct device *dev) +{ + struct adt7411_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + int val; + + if (time_after_eq(jiffies, data->next_update)) { + val = i2c_smbus_read_byte_data(client, ADT7411_REG_CFG3); + if (val < 0) + return val; + + if (val & ADT7411_CFG3_REF_VDD) { + val = adt7411_read_in_vdd(dev, hwmon_in_input, + &data->vref_cached); + if (val < 0) + return val; + } else { + data->vref_cached = 2250; + } + + data->next_update = jiffies + HZ; + } + + return 0; +} + +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 reg, lsb_reg, lsb_shift; + int nr = channel - 1; + + mutex_lock(&data->update_lock); + ret = adt7411_update_vref(dev); + if (ret < 0) + goto exit_unlock; + + 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; + case hwmon_in_min: + case hwmon_in_max: + reg = (attr == hwmon_in_min) + ? ADT7411_REG_IN_LOW(channel) + : ADT7411_REG_IN_HIGH(channel); + ret = i2c_smbus_read_byte_data(client, reg); + if (ret < 0) + goto exit_unlock; + *val = ret * data->vref_cached / 256; + ret = 0; + break; + case hwmon_in_alarm: + ret = adt7411_read_in_alarm(dev, channel, val); + 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_alarm(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, bit; + + ret = i2c_smbus_read_byte_data(client, ADT7411_REG_STAT_1); + if (ret < 0) + return ret; + + switch (attr) { + case hwmon_temp_min_alarm: + bit = channel ? ADT7411_STAT_1_EXT_TEMP_LOW + : ADT7411_STAT_1_INT_TEMP_LOW; + break; + case hwmon_temp_max_alarm: + bit = channel ? ADT7411_STAT_1_EXT_TEMP_HIGH_AIN1 + : ADT7411_STAT_1_INT_TEMP_HIGH; + break; + case hwmon_temp_fault: + bit = ADT7411_STAT_1_EXT_TEMP_FAULT; + break; + default: + return -EOPNOTSUPP; + } + + *val = !!(ret & bit); + return 0; +} + +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, reg, 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; + case hwmon_temp_min: + case hwmon_temp_max: + reg = (attr == hwmon_temp_min) + ? ADT7411_REG_TEMP_LOW(channel) + : ADT7411_REG_TEMP_HIGH(channel); + ret = i2c_smbus_read_byte_data(client, reg); + if (ret < 0) + return ret; + ret = ret & 0x80 ? ret - 0x100 : ret; /* 8 bit signed */ + *val = ret * 1000; + return 0; + case hwmon_temp_min_alarm: + case hwmon_temp_max_alarm: + case hwmon_temp_fault: + return adt7411_read_temp_alarm(dev, attr, channel, val); + 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 int adt7411_write_in_vdd(struct device *dev, u32 attr, long val) +{ + struct adt7411_data *data = dev_get_drvdata(dev); + struct i2c_client *client = data->client; + int reg; + + val = clamp_val(val, 0, 255 * 7000 / 256); + val = DIV_ROUND_CLOSEST(val * 256, 7000); + + switch (attr) { + case hwmon_in_min: + reg = ADT7411_REG_VDD_LOW; + break; + case hwmon_in_max: + reg = ADT7411_REG_VDD_HIGH; + break; + default: + return -EOPNOTSUPP; + } + + return i2c_smbus_write_byte_data(client, reg, val); +} + +static int adt7411_write_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, reg; + + mutex_lock(&data->update_lock); + ret = adt7411_update_vref(dev); + if (ret < 0) + goto exit_unlock; + val = clamp_val(val, 0, 255 * data->vref_cached / 256); + val = DIV_ROUND_CLOSEST(val * 256, data->vref_cached); + + switch (attr) { + case hwmon_in_min: + reg = ADT7411_REG_IN_LOW(channel); + break; + case hwmon_in_max: + reg = ADT7411_REG_IN_HIGH(channel); + break; + default: + ret = -EOPNOTSUPP; + goto exit_unlock; + } + + ret = i2c_smbus_write_byte_data(client, reg, val); + exit_unlock: + mutex_unlock(&data->update_lock); + return ret; +} + +static int adt7411_write_in(struct device *dev, u32 attr, int channel, + long val) +{ + if (channel == 0) + return adt7411_write_in_vdd(dev, attr, val); + else + return adt7411_write_in_chan(dev, attr, channel, val); +} + +static int adt7411_write_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 reg; + + val = clamp_val(val, -128000, 127000); + val = DIV_ROUND_CLOSEST(val, 1000); + + switch (attr) { + case hwmon_temp_min: + reg = ADT7411_REG_TEMP_LOW(channel); + break; + case hwmon_temp_max: + reg = ADT7411_REG_TEMP_HIGH(channel); + break; + default: + return -EOPNOTSUPP; + } + + return i2c_smbus_write_byte_data(client, reg, val); +} + +static int adt7411_write(struct device *dev, enum hwmon_sensor_types type, + u32 attr, int channel, long val) +{ + switch (type) { + case hwmon_in: + return adt7411_write_in(dev, attr, channel, val); + case hwmon_temp: + return adt7411_write_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; + bool visible; + + switch (type) { + case hwmon_in: + visible = channel == 0 || channel >= 3 || !data->use_ext_temp; + switch (attr) { + case hwmon_in_input: + case hwmon_in_alarm: + return visible ? S_IRUGO : 0; + case hwmon_in_min: + case hwmon_in_max: + return visible ? S_IRUGO | S_IWUSR : 0; + } + break; + case hwmon_temp: + visible = channel == 0 || data->use_ext_temp; + switch (attr) { + case hwmon_temp_input: + case hwmon_temp_min_alarm: + case hwmon_temp_max_alarm: + case hwmon_temp_fault: + return visible ? S_IRUGO : 0; + case hwmon_temp_min: + case hwmon_temp_max: + return visible ? S_IRUGO | S_IWUSR : 0; + } + break; + default: + break; + } + return 0; +} + +static int adt7411_detect(struct i2c_client *client, + struct i2c_board_info *info) +{ + int val; + + if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) + return -ENODEV; + + val = i2c_smbus_read_byte_data(client, ADT7411_REG_MANUFACTURER_ID); + if (val < 0 || val != ADT7411_MANUFACTURER_ID) { + dev_dbg(&client->dev, + "Wrong manufacturer ID. Got %d, expected %d\n", + val, ADT7411_MANUFACTURER_ID); + return -ENODEV; + } + + val = i2c_smbus_read_byte_data(client, ADT7411_REG_DEVICE_ID); + if (val < 0 || val != ADT7411_DEVICE_ID) { + dev_dbg(&client->dev, + "Wrong device ID. Got %d, expected %d\n", + val, ADT7411_DEVICE_ID); + return -ENODEV; + } + + strscpy(info->type, "adt7411", I2C_NAME_SIZE); + + return 0; +} + +static int adt7411_init_device(struct adt7411_data *data) +{ + int ret; + u8 val; + + ret = i2c_smbus_read_byte_data(data->client, ADT7411_REG_CFG3); + if (ret < 0) + return ret; + + /* + * We must only write zero to bit 1 and bit 2 and only one to bit 3 + * according to the datasheet. + */ + val = ret; + val &= ~(ADT7411_CFG3_RESERVED_BIT1 | ADT7411_CFG3_RESERVED_BIT2); + val |= ADT7411_CFG3_RESERVED_BIT3; + + ret = i2c_smbus_write_byte_data(data->client, ADT7411_REG_CFG3, val); + if (ret < 0) + return ret; + + ret = i2c_smbus_read_byte_data(data->client, ADT7411_REG_CFG1); + if (ret < 0) + return ret; + + data->use_ext_temp = ret & ADT7411_CFG1_EXT_TDM; + + /* + * We must only write zero to bit 1 and only one to bit 3 according to + * the datasheet. + */ + val = ret; + val &= ~ADT7411_CFG1_RESERVED_BIT1; + val |= ADT7411_CFG1_RESERVED_BIT3; + + /* enable monitoring */ + val |= ADT7411_CFG1_START_MONITOR; + + return i2c_smbus_write_byte_data(data->client, ADT7411_REG_CFG1, val); +} + +static const struct hwmon_channel_info *adt7411_info[] = { + HWMON_CHANNEL_INFO(in, + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX | HWMON_I_ALARM, + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX | HWMON_I_ALARM, + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX | HWMON_I_ALARM, + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX | HWMON_I_ALARM, + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX | HWMON_I_ALARM, + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX | HWMON_I_ALARM, + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX | HWMON_I_ALARM, + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX | HWMON_I_ALARM, + HWMON_I_INPUT | HWMON_I_MIN | HWMON_I_MAX | HWMON_I_ALARM), + HWMON_CHANNEL_INFO(temp, + HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MIN_ALARM | + HWMON_T_MAX | HWMON_T_MAX_ALARM, + HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MIN_ALARM | + HWMON_T_MAX | HWMON_T_MAX_ALARM | HWMON_T_FAULT), + NULL +}; + +static const struct hwmon_ops adt7411_hwmon_ops = { + .is_visible = adt7411_is_visible, + .read = adt7411_read, + .write = adt7411_write, +}; + +static const struct hwmon_chip_info adt7411_chip_info = { + .ops = &adt7411_hwmon_ops, + .info = adt7411_info, +}; + +static int adt7411_probe(struct i2c_client *client) +{ + struct device *dev = &client->dev; + struct adt7411_data *data; + struct device *hwmon_dev; + int ret; + + data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + i2c_set_clientdata(client, data); + data->client = client; + mutex_init(&data->device_lock); + mutex_init(&data->update_lock); + + ret = adt7411_init_device(data); + if (ret < 0) + return ret; + + /* force update on first occasion */ + data->next_update = jiffies; + + hwmon_dev = devm_hwmon_device_register_with_info(dev, client->name, + data, + &adt7411_chip_info, + adt7411_groups); + return PTR_ERR_OR_ZERO(hwmon_dev); +} + +static const struct i2c_device_id adt7411_id[] = { + { "adt7411", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, adt7411_id); + +static struct i2c_driver adt7411_driver = { + .driver = { + .name = "adt7411", + }, + .probe_new = adt7411_probe, + .id_table = adt7411_id, + .detect = adt7411_detect, + .address_list = normal_i2c, + .class = I2C_CLASS_HWMON, +}; + +module_i2c_driver(adt7411_driver); + +MODULE_AUTHOR("Sascha Hauer, Wolfram Sang <kernel@pengutronix.de>"); +MODULE_DESCRIPTION("ADT7411 driver"); +MODULE_LICENSE("GPL v2"); |