766 lines
22 KiB
C
766 lines
22 KiB
C
/*
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/err.h>
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#include <linux/i2c.h>
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#include <linux/init.h>
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#include <linux/hwmon.h>
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#include <linux/hwmon-sysfs.h>
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#include <linux/jiffies.h>
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#include <linux/module.h>
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#include <linux/mutex.h>
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#include <linux/regmap.h>
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#include <linux/slab.h>
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#define DRVNAME "nct7511"
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#define REG_BANK 0x00
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#define REG_TEMP_LSB 0x05
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#define REG_FANCOUNT_LOW 0x13
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#define REG_START 0x21
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#define REG_MODE 0x22 /* 7.2.32 Mode Selection Register */
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#define REG_FAN_ENABLE 0x24
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#define REG_PWM(x) (0x60 + (x))
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#define REG_SMARTFAN_EN(x) (0x64 + (x) / 2)
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#define SMARTFAN_EN_SHIFT(x) ((x) % 2 * 4)
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#define REG_VENDOR_ID 0xfd
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#define REG_CHIP_ID 0xfe
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#define REG_VERSION_ID 0xff
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/*
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* Data structures and manipulation thereof
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*/
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struct nct7511_data {
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struct regmap *regmap;
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struct mutex access_lock; /* for multi-byte read and write operations */
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};
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static ssize_t show_temp_type(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct nct7511_data *data = dev_get_drvdata(dev);
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struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
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unsigned int mode;
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int ret;
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ret = regmap_read(data->regmap, REG_MODE, &mode);
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if (ret < 0)
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return ret;
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return sprintf(buf, "%u\n", (mode >> (2 * sattr->index) & 3) + 2);
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}
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static ssize_t store_temp_type(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct nct7511_data *data = dev_get_drvdata(dev);
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struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
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unsigned int type;
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int err;
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err = kstrtouint(buf, 0, &type);
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if (err < 0)
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return err;
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if (sattr->index == 2 && type != 4) /* RD3 */
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return -EINVAL;
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if (type < 3 || type > 4)
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return -EINVAL;
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err = regmap_update_bits(data->regmap, REG_MODE,
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3 << 2 * sattr->index, (type - 2) << 2 * sattr->index);
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return err ? : count;
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}
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static ssize_t show_pwm_mode(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
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struct nct7511_data *data = dev_get_drvdata(dev);
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unsigned int regval;
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int ret;
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if (sattr->index > 1)
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return sprintf(buf, "1\n");
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ret = regmap_read(data->regmap, 0x5E, ®val);
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if (ret < 0)
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return ret;
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return sprintf(buf, "%u\n", !(regval & (1 << sattr->index)));
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}
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static ssize_t show_pwm(struct device *dev, struct device_attribute *devattr,
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char *buf)
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{
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struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
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struct nct7511_data *data = dev_get_drvdata(dev);
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unsigned int val;
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int ret;
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if (!attr->index)
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return sprintf(buf, "255\n");
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ret = regmap_read(data->regmap, attr->index, &val);
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if (ret < 0)
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return ret;
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return sprintf(buf, "%d\n", val);
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}
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static ssize_t store_pwm(struct device *dev, struct device_attribute *devattr,
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const char *buf, size_t count)
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{
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struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
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struct nct7511_data *data = dev_get_drvdata(dev);
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int err;
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u8 val;
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err = kstrtou8(buf, 0, &val);
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if (err < 0)
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return err;
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err = regmap_write(data->regmap, attr->index, val);
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return err ? : count;
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}
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static ssize_t show_pwm_enable(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct nct7511_data *data = dev_get_drvdata(dev);
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struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
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unsigned int reg, enabled;
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int ret;
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ret = regmap_read(data->regmap, REG_SMARTFAN_EN(sattr->index), ®);
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if (ret < 0)
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return ret;
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enabled = reg >> SMARTFAN_EN_SHIFT(sattr->index) & 1;
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return sprintf(buf, "%u\n", enabled + 1);
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}
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static ssize_t store_pwm_enable(struct device *dev,
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struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct nct7511_data *data = dev_get_drvdata(dev);
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struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
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u8 val;
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int ret;
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ret = kstrtou8(buf, 0, &val);
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if (ret < 0)
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return ret;
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if (val < 1 || val > 2)
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return -EINVAL;
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ret = regmap_update_bits(data->regmap, REG_SMARTFAN_EN(sattr->index),
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1 << SMARTFAN_EN_SHIFT(sattr->index),
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(val - 1) << SMARTFAN_EN_SHIFT(sattr->index));
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return ret ? : count;
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}
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static int nct7511_read_temp(struct nct7511_data *data,
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u8 reg_temp, u8 reg_temp_low, int *temp)
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{
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unsigned int t1, t2 = 0;
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int err;
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*temp = 0;
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mutex_lock(&data->access_lock);
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err = regmap_read(data->regmap, reg_temp, &t1);
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if (err < 0)
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goto abort;
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t1 <<= 8;
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if (reg_temp_low) { /* 11 bit data */
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err = regmap_read(data->regmap, reg_temp_low, &t2);
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if (err < 0)
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goto abort;
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}
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t1 |= t2 & 0xe0;
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*temp = (s16)t1 / 32 * 125;
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abort:
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mutex_unlock(&data->access_lock);
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return err;
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}
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static int nct7511_read_fan(struct nct7511_data *data, u8 reg_fan)
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{
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unsigned int f1, f2;
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int ret;
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mutex_lock(&data->access_lock);
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ret = regmap_read(data->regmap, reg_fan, &f1);
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if (ret < 0)
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goto abort;
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ret = regmap_read(data->regmap, REG_FANCOUNT_LOW, &f2);
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if (ret < 0)
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goto abort;
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ret = (f1 << 5) | (f2 >> 3);
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/* convert fan count to rpm */
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if (ret == 0x1fff) /* maximum value, assume fan is stopped */
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ret = 0;
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else if (ret)
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ret = DIV_ROUND_CLOSEST(1350000U, ret);
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abort:
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mutex_unlock(&data->access_lock);
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return ret;
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}
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static int nct7511_read_fan_min(struct nct7511_data *data, u8 reg_fan_low,
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u8 reg_fan_high)
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{
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unsigned int f1, f2;
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int ret;
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mutex_lock(&data->access_lock);
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ret = regmap_read(data->regmap, reg_fan_low, &f1);
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if (ret < 0)
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goto abort;
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ret = regmap_read(data->regmap, reg_fan_high, &f2);
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if (ret < 0)
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goto abort;
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ret = f1 | ((f2 & 0xf8) << 5);
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/* convert fan count to rpm */
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if (ret == 0x1fff) /* maximum value, assume no limit */
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ret = 0;
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else if (ret)
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ret = DIV_ROUND_CLOSEST(1350000U, ret);
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else
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ret = 1350000U;
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abort:
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mutex_unlock(&data->access_lock);
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return ret;
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}
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static int nct7511_write_fan_min(struct nct7511_data *data, u8 reg_fan_low,
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u8 reg_fan_high, unsigned long limit)
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{
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int err;
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if (limit)
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limit = DIV_ROUND_CLOSEST(1350000U, limit);
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else
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limit = 0x1fff;
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limit = clamp_val(limit, 0, 0x1fff);
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mutex_lock(&data->access_lock);
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err = regmap_write(data->regmap, reg_fan_low, limit & 0xff);
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if (err < 0)
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goto abort;
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err = regmap_write(data->regmap, reg_fan_high, (limit & 0x1f00) >> 5);
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abort:
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mutex_unlock(&data->access_lock);
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return err;
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}
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static ssize_t show_temp(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct nct7511_data *data = dev_get_drvdata(dev);
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struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
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int err, temp;
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err = nct7511_read_temp(data, sattr->nr, sattr->index, &temp);
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if (err < 0)
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return err;
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return sprintf(buf, "%d\n", temp);
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}
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static ssize_t store_temp(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
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struct nct7511_data *data = dev_get_drvdata(dev);
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int nr = sattr->nr;
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long val;
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int err;
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err = kstrtol(buf, 10, &val);
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if (err < 0)
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return err;
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val = DIV_ROUND_CLOSEST(clamp_val(val, -128000, 127000), 1000);
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err = regmap_write(data->regmap, nr, val & 0xff);
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return err ? : count;
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}
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static ssize_t show_fan(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct sensor_device_attribute *sattr = to_sensor_dev_attr(attr);
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struct nct7511_data *data = dev_get_drvdata(dev);
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int speed;
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speed = nct7511_read_fan(data, sattr->index);
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if (speed < 0)
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return speed;
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return sprintf(buf, "%d\n", speed);
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}
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static ssize_t show_fan_min(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
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struct nct7511_data *data = dev_get_drvdata(dev);
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int speed;
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speed = nct7511_read_fan_min(data, sattr->nr, sattr->index);
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if (speed < 0)
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return speed;
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return sprintf(buf, "%d\n", speed);
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}
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static ssize_t store_fan_min(struct device *dev, struct device_attribute *attr,
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const char *buf, size_t count)
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{
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struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
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struct nct7511_data *data = dev_get_drvdata(dev);
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unsigned long val;
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int err;
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err = kstrtoul(buf, 10, &val);
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if (err < 0)
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return err;
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err = nct7511_write_fan_min(data, sattr->nr, sattr->index, val);
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return err ? : count;
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}
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static ssize_t show_alarm(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct nct7511_data *data = dev_get_drvdata(dev);
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struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
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int bit = sattr->index;
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unsigned int val;
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int ret;
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ret = regmap_read(data->regmap, sattr->nr, &val);
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if (ret < 0)
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return ret;
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return sprintf(buf, "%u\n", !!(val & (1 << bit)));
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}
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static ssize_t
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show_beep(struct device *dev, struct device_attribute *attr, char *buf)
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{
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struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
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struct nct7511_data *data = dev_get_drvdata(dev);
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unsigned int regval;
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int err;
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err = regmap_read(data->regmap, sattr->nr, ®val);
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if (err)
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return err;
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return sprintf(buf, "%u\n", !!(regval & (1 << sattr->index)));
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}
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static ssize_t
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store_beep(struct device *dev, struct device_attribute *attr, const char *buf,
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size_t count)
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{
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struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
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struct nct7511_data *data = dev_get_drvdata(dev);
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unsigned long val;
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int err;
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err = kstrtoul(buf, 10, &val);
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if (err < 0)
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return err;
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if (val > 1)
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return -EINVAL;
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err = regmap_update_bits(data->regmap, sattr->nr, 1 << sattr->index,
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val ? 1 << sattr->index : 0);
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return err ? : count;
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}
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static SENSOR_DEVICE_ATTR(temp1_type, S_IRUGO | S_IWUSR,
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show_temp_type, store_temp_type, 0);
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static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0x01,
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REG_TEMP_LSB);
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static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp,
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store_temp, 0x31, 0);
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static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp,
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store_temp, 0x30, 0);
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static SENSOR_DEVICE_ATTR_2(temp1_crit, S_IRUGO | S_IWUSR, show_temp,
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store_temp, 0x3a, 0);
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static SENSOR_DEVICE_ATTR(temp2_type, S_IRUGO | S_IWUSR,
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show_temp_type, store_temp_type, 1);
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static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 0x02,
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REG_TEMP_LSB);
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static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp,
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store_temp, 0x33, 0);
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static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp,
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store_temp, 0x32, 0);
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static SENSOR_DEVICE_ATTR_2(temp2_crit, S_IRUGO | S_IWUSR, show_temp,
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store_temp, 0x3b, 0);
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static SENSOR_DEVICE_ATTR(temp3_type, S_IRUGO | S_IWUSR,
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show_temp_type, store_temp_type, 2);
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static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 0x03,
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REG_TEMP_LSB);
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static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp,
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store_temp, 0x35, 0);
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static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp,
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store_temp, 0x34, 0);
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static SENSOR_DEVICE_ATTR_2(temp3_crit, S_IRUGO | S_IWUSR, show_temp,
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store_temp, 0x3c, 0);
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static SENSOR_DEVICE_ATTR_2(temp4_input, S_IRUGO, show_temp, NULL, 0x04, 0);
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static SENSOR_DEVICE_ATTR_2(temp4_min, S_IRUGO | S_IWUSR, show_temp,
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store_temp, 0x37, 0);
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static SENSOR_DEVICE_ATTR_2(temp4_max, S_IRUGO | S_IWUSR, show_temp,
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store_temp, 0x36, 0);
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static SENSOR_DEVICE_ATTR_2(temp4_crit, S_IRUGO | S_IWUSR, show_temp,
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store_temp, 0x3d, 0);
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static SENSOR_DEVICE_ATTR_2(temp1_min_alarm, S_IRUGO, show_alarm, NULL,
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0x18, 0);
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static SENSOR_DEVICE_ATTR_2(temp2_min_alarm, S_IRUGO, show_alarm, NULL,
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0x18, 1);
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static SENSOR_DEVICE_ATTR_2(temp3_min_alarm, S_IRUGO, show_alarm, NULL,
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0x18, 2);
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static SENSOR_DEVICE_ATTR_2(temp4_min_alarm, S_IRUGO, show_alarm, NULL,
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0x18, 3);
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static SENSOR_DEVICE_ATTR_2(temp1_max_alarm, S_IRUGO, show_alarm, NULL,
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0x19, 0);
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static SENSOR_DEVICE_ATTR_2(temp2_max_alarm, S_IRUGO, show_alarm, NULL,
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0x19, 1);
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static SENSOR_DEVICE_ATTR_2(temp3_max_alarm, S_IRUGO, show_alarm, NULL,
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0x19, 2);
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static SENSOR_DEVICE_ATTR_2(temp4_max_alarm, S_IRUGO, show_alarm, NULL,
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0x19, 3);
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static SENSOR_DEVICE_ATTR_2(temp1_crit_alarm, S_IRUGO, show_alarm, NULL,
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0x1b, 0);
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static SENSOR_DEVICE_ATTR_2(temp2_crit_alarm, S_IRUGO, show_alarm, NULL,
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0x1b, 1);
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static SENSOR_DEVICE_ATTR_2(temp3_crit_alarm, S_IRUGO, show_alarm, NULL,
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0x1b, 2);
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static SENSOR_DEVICE_ATTR_2(temp4_crit_alarm, S_IRUGO, show_alarm, NULL,
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0x1b, 3);
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static SENSOR_DEVICE_ATTR_2(temp1_fault, S_IRUGO, show_alarm, NULL, 0x17, 0);
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static SENSOR_DEVICE_ATTR_2(temp2_fault, S_IRUGO, show_alarm, NULL, 0x17, 1);
|
|
static SENSOR_DEVICE_ATTR_2(temp3_fault, S_IRUGO, show_alarm, NULL, 0x17, 2);
|
|
|
|
static SENSOR_DEVICE_ATTR_2(temp1_beep, S_IRUGO | S_IWUSR, show_beep,
|
|
store_beep, 0x5c, 0);
|
|
static SENSOR_DEVICE_ATTR_2(temp2_beep, S_IRUGO | S_IWUSR, show_beep,
|
|
store_beep, 0x5c, 1);
|
|
static SENSOR_DEVICE_ATTR_2(temp3_beep, S_IRUGO | S_IWUSR, show_beep,
|
|
store_beep, 0x5c, 2);
|
|
static SENSOR_DEVICE_ATTR_2(temp4_beep, S_IRUGO | S_IWUSR, show_beep,
|
|
store_beep, 0x5c, 3);
|
|
|
|
static struct attribute *nct7511_temp_attrs[] = {
|
|
&sensor_dev_attr_temp1_type.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_input.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_min.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_crit.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_min_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_max_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_crit_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_fault.dev_attr.attr,
|
|
&sensor_dev_attr_temp1_beep.dev_attr.attr,
|
|
|
|
&sensor_dev_attr_temp2_type.dev_attr.attr, /* 10 */
|
|
&sensor_dev_attr_temp2_input.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_min.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_crit.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_min_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_max_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_crit_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_fault.dev_attr.attr,
|
|
&sensor_dev_attr_temp2_beep.dev_attr.attr,
|
|
|
|
&sensor_dev_attr_temp3_type.dev_attr.attr, /* 20 */
|
|
&sensor_dev_attr_temp3_input.dev_attr.attr,
|
|
&sensor_dev_attr_temp3_min.dev_attr.attr,
|
|
&sensor_dev_attr_temp3_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp3_crit.dev_attr.attr,
|
|
&sensor_dev_attr_temp3_min_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_temp3_max_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_temp3_crit_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_temp3_fault.dev_attr.attr,
|
|
&sensor_dev_attr_temp3_beep.dev_attr.attr,
|
|
|
|
&sensor_dev_attr_temp4_input.dev_attr.attr, /* 30 */
|
|
&sensor_dev_attr_temp4_min.dev_attr.attr,
|
|
&sensor_dev_attr_temp4_max.dev_attr.attr,
|
|
&sensor_dev_attr_temp4_crit.dev_attr.attr,
|
|
&sensor_dev_attr_temp4_min_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_temp4_max_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_temp4_crit_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_temp4_beep.dev_attr.attr,
|
|
|
|
NULL
|
|
};
|
|
|
|
static umode_t nct7511_temp_is_visible(struct kobject *kobj,
|
|
struct attribute *attr, int index)
|
|
{
|
|
struct device *dev = container_of(kobj, struct device, kobj);
|
|
struct nct7511_data *data = dev_get_drvdata(dev);
|
|
unsigned int reg;
|
|
int err;
|
|
|
|
err = regmap_read(data->regmap, REG_MODE, ®);
|
|
if (err < 0)
|
|
return 0;
|
|
|
|
if (index < 10 &&
|
|
(reg & 03) != 0x01 && (reg & 0x03) != 0x02) /* RD1 */
|
|
return 0;
|
|
|
|
if (index >= 10 && index < 20 &&
|
|
(reg & 0x0c) != 0x04 && (reg & 0x0c) != 0x08) /* RD2 */
|
|
return 0;
|
|
if (index >= 20 && index < 30 && (reg & 0x30) != 0x20) /* RD3 */
|
|
return 0;
|
|
|
|
if (index >= 30 && index < 38) /* local */
|
|
return attr->mode;
|
|
|
|
return attr->mode;
|
|
}
|
|
|
|
static struct attribute_group nct7511_temp_group = {
|
|
.attrs = nct7511_temp_attrs,
|
|
.is_visible = nct7511_temp_is_visible,
|
|
};
|
|
|
|
|
|
static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0x10);
|
|
static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_fan_min,
|
|
store_fan_min, 0x49, 0x4c);
|
|
static SENSOR_DEVICE_ATTR_2(fan1_alarm, S_IRUGO, show_alarm, NULL, 0x1a, 0);
|
|
static SENSOR_DEVICE_ATTR_2(fan1_beep, S_IRUGO | S_IWUSR, show_beep, store_beep,
|
|
0x5b, 0);
|
|
|
|
/* 7.2.89 Fan Control Output Type */
|
|
static SENSOR_DEVICE_ATTR(pwm1_mode, S_IRUGO, show_pwm_mode, NULL, 0);
|
|
|
|
/* 7.2.91... Fan Control Output Value */
|
|
static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm, store_pwm,
|
|
REG_PWM(0));
|
|
|
|
|
|
/* 7.2.95... Temperature to Fan mapping Relationships Register */
|
|
static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR, show_pwm_enable,
|
|
store_pwm_enable, 0);
|
|
|
|
|
|
static struct attribute *nct7511_fan_attrs[] = {
|
|
&sensor_dev_attr_fan1_input.dev_attr.attr,
|
|
&sensor_dev_attr_fan1_min.dev_attr.attr,
|
|
&sensor_dev_attr_fan1_alarm.dev_attr.attr,
|
|
&sensor_dev_attr_fan1_beep.dev_attr.attr,
|
|
NULL
|
|
};
|
|
|
|
static umode_t nct7511_fan_is_visible(struct kobject *kobj,
|
|
struct attribute *attr, int index)
|
|
{
|
|
struct device *dev = container_of(kobj, struct device, kobj);
|
|
struct nct7511_data *data = dev_get_drvdata(dev);
|
|
int fan = index / 4; /* 4 attributes per fan */
|
|
unsigned int reg;
|
|
int err;
|
|
|
|
err = regmap_read(data->regmap, REG_FAN_ENABLE, ®);
|
|
if (err < 0 || !(reg & (1 << fan)))
|
|
return 0;
|
|
|
|
return attr->mode;
|
|
}
|
|
|
|
static struct attribute_group nct7511_fan_group = {
|
|
.attrs = nct7511_fan_attrs,
|
|
.is_visible = nct7511_fan_is_visible,
|
|
};
|
|
|
|
static struct attribute *nct7511_pwm_attrs[] = {
|
|
&sensor_dev_attr_pwm1_enable.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_mode.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1.dev_attr.attr,
|
|
NULL
|
|
};
|
|
|
|
static struct attribute_group nct7511_pwm_group = {
|
|
.attrs = nct7511_pwm_attrs,
|
|
};
|
|
|
|
/* 7.2.115... 0x80-0x83, 0x84 Temperature (X-axis) transition */
|
|
static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp, S_IRUGO | S_IWUSR,
|
|
show_temp, store_temp, 0x80, 0);
|
|
static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_temp, S_IRUGO | S_IWUSR,
|
|
show_temp, store_temp, 0x81, 0);
|
|
static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_temp, S_IRUGO | S_IWUSR,
|
|
show_temp, store_temp, 0x82, 0);
|
|
static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_temp, S_IRUGO | S_IWUSR,
|
|
show_temp, store_temp, 0x83, 0);
|
|
static SENSOR_DEVICE_ATTR_2(pwm1_auto_point5_temp, S_IRUGO | S_IWUSR,
|
|
show_temp, store_temp, 0x84, 0);
|
|
|
|
/* 7.2.120... 0x85-0x88 PWM (Y-axis) transition */
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR,
|
|
show_pwm, store_pwm, 0x85);
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR,
|
|
show_pwm, store_pwm, 0x86);
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point3_pwm, S_IRUGO | S_IWUSR,
|
|
show_pwm, store_pwm, 0x87);
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point4_pwm, S_IRUGO | S_IWUSR,
|
|
show_pwm, store_pwm, 0x88);
|
|
static SENSOR_DEVICE_ATTR(pwm1_auto_point5_pwm, S_IRUGO, show_pwm, NULL, 0);
|
|
|
|
|
|
static struct attribute *nct7511_auto_point_attrs[] = {
|
|
&sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point5_temp.dev_attr.attr,
|
|
|
|
&sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr,
|
|
&sensor_dev_attr_pwm1_auto_point5_pwm.dev_attr.attr,
|
|
|
|
NULL
|
|
};
|
|
|
|
static struct attribute_group nct7511_auto_point_group = {
|
|
.attrs = nct7511_auto_point_attrs,
|
|
};
|
|
|
|
static const struct attribute_group *nct7511_groups[] = {
|
|
&nct7511_temp_group,
|
|
&nct7511_fan_group,
|
|
&nct7511_pwm_group,
|
|
&nct7511_auto_point_group,
|
|
NULL
|
|
};
|
|
|
|
static int nct7511_detect(struct i2c_client *client,
|
|
struct i2c_board_info *info)
|
|
{
|
|
int reg;
|
|
|
|
reg = i2c_smbus_read_byte_data(client, REG_VENDOR_ID);
|
|
if (reg != 0x50)
|
|
return -ENODEV;
|
|
|
|
reg = i2c_smbus_read_byte_data(client, REG_CHIP_ID);
|
|
if (reg != 0xc3)
|
|
return -ENODEV;
|
|
|
|
reg = i2c_smbus_read_byte_data(client, REG_VERSION_ID);
|
|
if (reg < 0 || (reg & 0xf0) != 0x20)
|
|
return -ENODEV;
|
|
|
|
/* Also validate lower bits of voltage and temperature registers */
|
|
reg = i2c_smbus_read_byte_data(client, REG_TEMP_LSB);
|
|
if (reg < 0 || (reg & 0x1f))
|
|
return -ENODEV;
|
|
|
|
strlcpy(info->type, "nct7511", I2C_NAME_SIZE);
|
|
return 0;
|
|
}
|
|
|
|
static bool nct7511_regmap_is_volatile(struct device *dev, unsigned int reg)
|
|
{
|
|
return (reg != REG_BANK && reg <= 0x20) ||
|
|
(reg >= REG_PWM(0) && reg <= REG_PWM(2));
|
|
}
|
|
|
|
static const struct regmap_config nct7511_regmap_config = {
|
|
.reg_bits = 8,
|
|
.val_bits = 8,
|
|
.cache_type = REGCACHE_RBTREE,
|
|
.volatile_reg = nct7511_regmap_is_volatile,
|
|
};
|
|
|
|
static int nct7511_init_chip(struct nct7511_data *data)
|
|
{
|
|
int err;
|
|
|
|
/* Enable ADC */
|
|
err = regmap_update_bits(data->regmap, REG_START, 0x01, 0x01);
|
|
if (err)
|
|
return err;
|
|
/* Enable local temperature sensor */
|
|
return regmap_update_bits(data->regmap, REG_MODE, 0x40, 0x40);
|
|
}
|
|
|
|
static int nct7511_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct device *dev = &client->dev;
|
|
struct nct7511_data *data;
|
|
struct device *hwmon_dev;
|
|
int ret;
|
|
|
|
data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
|
|
if (data == NULL)
|
|
return -ENOMEM;
|
|
|
|
data->regmap = devm_regmap_init_i2c(client, &nct7511_regmap_config);
|
|
if (IS_ERR(data->regmap))
|
|
return PTR_ERR(data->regmap);
|
|
|
|
mutex_init(&data->access_lock);
|
|
|
|
ret = nct7511_init_chip(data);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
|
|
data,
|
|
nct7511_groups);
|
|
return PTR_ERR_OR_ZERO(hwmon_dev);
|
|
}
|
|
|
|
|
|
static const struct i2c_device_id nct7511_idtable[] = {
|
|
{ "nct7511", 0 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, nct7511_idtable);
|
|
|
|
static struct i2c_driver nct7511_driver = {
|
|
.class = I2C_CLASS_HWMON,
|
|
.driver = {
|
|
.name = DRVNAME,
|
|
},
|
|
.detect = nct7511_detect,
|
|
.probe = nct7511_probe,
|
|
.id_table = nct7511_idtable,
|
|
};
|
|
|
|
module_i2c_driver(nct7511_driver);
|
|
|
|
MODULE_AUTHOR("Cameo <cameo@nettech-global.net>");
|
|
MODULE_DESCRIPTION("NCT7511Y Hardware Monitoring Driver");
|
|
MODULE_LICENSE("GPL v2");
|