--- /dev/null
+/*
+ * lm63.c - driver for the National Semiconductor LM63 temperature sensor
+ * with integrated fan control
+ * Copyright (C) 2004-2008 Jean Delvare <jdelvare@suse.de>
+ * Based on the lm90 driver.
+ *
+ * The LM63 is a sensor chip made by National Semiconductor. It measures
+ * two temperatures (its own and one external one) and the speed of one
+ * fan, those speed it can additionally control. Complete datasheet can be
+ * obtained from National's website at:
+ * http://www.national.com/pf/LM/LM63.html
+ *
+ * The LM63 is basically an LM86 with fan speed monitoring and control
+ * capabilities added. It misses some of the LM86 features though:
+ * - No low limit for local temperature.
+ * - No critical limit for local temperature.
+ * - Critical limit for remote temperature can be changed only once. We
+ * will consider that the critical limit is read-only.
+ *
+ * The datasheet isn't very clear about what the tachometer reading is.
+ * I had a explanation from National Semiconductor though. The two lower
+ * bits of the read value have to be masked out. The value is still 16 bit
+ * in width.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/jiffies.h>
+#include <linux/i2c.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/hwmon.h>
+#include <linux/err.h>
+#include <linux/mutex.h>
+#include <linux/sysfs.h>
+#include <linux/types.h>
+
+/*
+ * Addresses to scan
+ * Address is fully defined internally and cannot be changed except for
+ * LM64 which has one pin dedicated to address selection.
+ * LM63 and LM96163 have address 0x4c.
+ * LM64 can have address 0x18 or 0x4e.
+ */
+
+static const unsigned short normal_i2c[] = { 0x18, 0x4c, 0x4e, I2C_CLIENT_END };
+
+/*
+ * The LM63 registers
+ */
+
+#define LM63_REG_CONFIG1 0x03
+#define LM63_REG_CONVRATE 0x04
+#define LM63_REG_CONFIG2 0xBF
+#define LM63_REG_CONFIG_FAN 0x4A
+
+#define LM63_REG_TACH_COUNT_MSB 0x47
+#define LM63_REG_TACH_COUNT_LSB 0x46
+#define LM63_REG_TACH_LIMIT_MSB 0x49
+#define LM63_REG_TACH_LIMIT_LSB 0x48
+
+#define LM63_REG_PWM_VALUE 0x4C
+#define LM63_REG_PWM_FREQ 0x4D
+#define LM63_REG_LUT_TEMP_HYST 0x4F
+#define LM63_REG_LUT_TEMP(nr) (0x50 + 2 * (nr))
+#define LM63_REG_LUT_PWM(nr) (0x51 + 2 * (nr))
+
+#define LM63_REG_LOCAL_TEMP 0x00
+#define LM63_REG_LOCAL_HIGH 0x05
+
+#define LM63_REG_REMOTE_TEMP_MSB 0x01
+#define LM63_REG_REMOTE_TEMP_LSB 0x10
+#define LM63_REG_REMOTE_OFFSET_MSB 0x11
+#define LM63_REG_REMOTE_OFFSET_LSB 0x12
+#define LM63_REG_REMOTE_HIGH_MSB 0x07
+#define LM63_REG_REMOTE_HIGH_LSB 0x13
+#define LM63_REG_REMOTE_LOW_MSB 0x08
+#define LM63_REG_REMOTE_LOW_LSB 0x14
+#define LM63_REG_REMOTE_TCRIT 0x19
+#define LM63_REG_REMOTE_TCRIT_HYST 0x21
+
+#define LM63_REG_ALERT_STATUS 0x02
+#define LM63_REG_ALERT_MASK 0x16
+
+#define LM63_REG_MAN_ID 0xFE
+#define LM63_REG_CHIP_ID 0xFF
+
+#define LM96163_REG_TRUTHERM 0x30
+#define LM96163_REG_REMOTE_TEMP_U_MSB 0x31
+#define LM96163_REG_REMOTE_TEMP_U_LSB 0x32
+#define LM96163_REG_CONFIG_ENHANCED 0x45
+
+#define LM63_MAX_CONVRATE 9
+
+#define LM63_MAX_CONVRATE_HZ 32
+#define LM96163_MAX_CONVRATE_HZ 26
+
+/*
+ * Conversions and various macros
+ * For tachometer counts, the LM63 uses 16-bit values.
+ * For local temperature and high limit, remote critical limit and hysteresis
+ * value, it uses signed 8-bit values with LSB = 1 degree Celsius.
+ * For remote temperature, low and high limits, it uses signed 11-bit values
+ * with LSB = 0.125 degree Celsius, left-justified in 16-bit registers.
+ * For LM64 the actual remote diode temperature is 16 degree Celsius higher
+ * than the register reading. Remote temperature setpoints have to be
+ * adapted accordingly.
+ */
+
+#define FAN_FROM_REG(reg) ((reg) == 0xFFFC || (reg) == 0 ? 0 : \
+ 5400000 / (reg))
+#define FAN_TO_REG(val) ((val) <= 82 ? 0xFFFC : \
+ (5400000 / (val)) & 0xFFFC)
+#define TEMP8_FROM_REG(reg) ((reg) * 1000)
+#define TEMP8_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val((val), -128000, \
+ 127000), 1000)
+#define TEMP8U_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val((val), 0, \
+ 255000), 1000)
+#define TEMP11_FROM_REG(reg) ((reg) / 32 * 125)
+#define TEMP11_TO_REG(val) (DIV_ROUND_CLOSEST(clamp_val((val), -128000, \
+ 127875), 125) * 32)
+#define TEMP11U_TO_REG(val) (DIV_ROUND_CLOSEST(clamp_val((val), 0, \
+ 255875), 125) * 32)
+#define HYST_TO_REG(val) DIV_ROUND_CLOSEST(clamp_val((val), 0, 127000), \
+ 1000)
+
+#define UPDATE_INTERVAL(max, rate) \
+ ((1000 << (LM63_MAX_CONVRATE - (rate))) / (max))
+
+enum chips { lm63, lm64, lm96163 };
+
+/*
+ * Client data (each client gets its own)
+ */
+
+struct lm63_data {
+ struct i2c_client *client;
+ struct mutex update_lock;
+ const struct attribute_group *groups[5];
+ char valid; /* zero until following fields are valid */
+ char lut_valid; /* zero until lut fields are valid */
+ unsigned long last_updated; /* in jiffies */
+ unsigned long lut_last_updated; /* in jiffies */
+ enum chips kind;
+ int temp2_offset;
+
+ int update_interval; /* in milliseconds */
+ int max_convrate_hz;
+ int lut_size; /* 8 or 12 */
+
+ /* registers values */
+ u8 config, config_fan;
+ u16 fan[2]; /* 0: input
+ 1: low limit */
+ u8 pwm1_freq;
+ u8 pwm1[13]; /* 0: current output
+ 1-12: lookup table */
+ s8 temp8[15]; /* 0: local input
+ 1: local high limit
+ 2: remote critical limit
+ 3-14: lookup table */
+ s16 temp11[4]; /* 0: remote input
+ 1: remote low limit
+ 2: remote high limit
+ 3: remote offset */
+ u16 temp11u; /* remote input (unsigned) */
+ u8 temp2_crit_hyst;
+ u8 lut_temp_hyst;
+ u8 alarms;
+ bool pwm_highres;
+ bool lut_temp_highres;
+ bool remote_unsigned; /* true if unsigned remote upper limits */
+ bool trutherm;
+};
+
+static inline int temp8_from_reg(struct lm63_data *data, int nr)
+{
+ if (data->remote_unsigned)
+ return TEMP8_FROM_REG((u8)data->temp8[nr]);
+ return TEMP8_FROM_REG(data->temp8[nr]);
+}
+
+static inline int lut_temp_from_reg(struct lm63_data *data, int nr)
+{
+ return data->temp8[nr] * (data->lut_temp_highres ? 500 : 1000);
+}
+
+static inline int lut_temp_to_reg(struct lm63_data *data, long val)
+{
+ val -= data->temp2_offset;
+ if (data->lut_temp_highres)
+ return DIV_ROUND_CLOSEST(clamp_val(val, 0, 127500), 500);
+ else
+ return DIV_ROUND_CLOSEST(clamp_val(val, 0, 127000), 1000);
+}
+
+/*
+ * Update the lookup table register cache.
+ * client->update_lock must be held when calling this function.
+ */
+static void lm63_update_lut(struct lm63_data *data)
+{
+ struct i2c_client *client = data->client;
+ int i;
+
+ if (time_after(jiffies, data->lut_last_updated + 5 * HZ) ||
+ !data->lut_valid) {
+ for (i = 0; i < data->lut_size; i++) {
+ data->pwm1[1 + i] = i2c_smbus_read_byte_data(client,
+ LM63_REG_LUT_PWM(i));
+ data->temp8[3 + i] = i2c_smbus_read_byte_data(client,
+ LM63_REG_LUT_TEMP(i));
+ }
+ data->lut_temp_hyst = i2c_smbus_read_byte_data(client,
+ LM63_REG_LUT_TEMP_HYST);
+
+ data->lut_last_updated = jiffies;
+ data->lut_valid = 1;
+ }
+}
+
+static struct lm63_data *lm63_update_device(struct device *dev)
+{
+ struct lm63_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ unsigned long next_update;
+
+ mutex_lock(&data->update_lock);
+
+ next_update = data->last_updated +
+ msecs_to_jiffies(data->update_interval);
+ if (time_after(jiffies, next_update) || !data->valid) {
+ if (data->config & 0x04) { /* tachometer enabled */
+ /* order matters for fan1_input */
+ data->fan[0] = i2c_smbus_read_byte_data(client,
+ LM63_REG_TACH_COUNT_LSB) & 0xFC;
+ data->fan[0] |= i2c_smbus_read_byte_data(client,
+ LM63_REG_TACH_COUNT_MSB) << 8;
+ data->fan[1] = (i2c_smbus_read_byte_data(client,
+ LM63_REG_TACH_LIMIT_LSB) & 0xFC)
+ | (i2c_smbus_read_byte_data(client,
+ LM63_REG_TACH_LIMIT_MSB) << 8);
+ }
+
+ data->pwm1_freq = i2c_smbus_read_byte_data(client,
+ LM63_REG_PWM_FREQ);
+ if (data->pwm1_freq == 0)
+ data->pwm1_freq = 1;
+ data->pwm1[0] = i2c_smbus_read_byte_data(client,
+ LM63_REG_PWM_VALUE);
+
+ data->temp8[0] = i2c_smbus_read_byte_data(client,
+ LM63_REG_LOCAL_TEMP);
+ data->temp8[1] = i2c_smbus_read_byte_data(client,
+ LM63_REG_LOCAL_HIGH);
+
+ /* order matters for temp2_input */
+ data->temp11[0] = i2c_smbus_read_byte_data(client,
+ LM63_REG_REMOTE_TEMP_MSB) << 8;
+ data->temp11[0] |= i2c_smbus_read_byte_data(client,
+ LM63_REG_REMOTE_TEMP_LSB);
+ data->temp11[1] = (i2c_smbus_read_byte_data(client,
+ LM63_REG_REMOTE_LOW_MSB) << 8)
+ | i2c_smbus_read_byte_data(client,
+ LM63_REG_REMOTE_LOW_LSB);
+ data->temp11[2] = (i2c_smbus_read_byte_data(client,
+ LM63_REG_REMOTE_HIGH_MSB) << 8)
+ | i2c_smbus_read_byte_data(client,
+ LM63_REG_REMOTE_HIGH_LSB);
+ data->temp11[3] = (i2c_smbus_read_byte_data(client,
+ LM63_REG_REMOTE_OFFSET_MSB) << 8)
+ | i2c_smbus_read_byte_data(client,
+ LM63_REG_REMOTE_OFFSET_LSB);
+
+ if (data->kind == lm96163)
+ data->temp11u = (i2c_smbus_read_byte_data(client,
+ LM96163_REG_REMOTE_TEMP_U_MSB) << 8)
+ | i2c_smbus_read_byte_data(client,
+ LM96163_REG_REMOTE_TEMP_U_LSB);
+
+ data->temp8[2] = i2c_smbus_read_byte_data(client,
+ LM63_REG_REMOTE_TCRIT);
+ data->temp2_crit_hyst = i2c_smbus_read_byte_data(client,
+ LM63_REG_REMOTE_TCRIT_HYST);
+
+ data->alarms = i2c_smbus_read_byte_data(client,
+ LM63_REG_ALERT_STATUS) & 0x7F;
+
+ data->last_updated = jiffies;
+ data->valid = 1;
+ }
+
+ lm63_update_lut(data);
+
+ mutex_unlock(&data->update_lock);
+
+ return data;
+}
+
+/*
+ * Trip points in the lookup table should be in ascending order for both
+ * temperatures and PWM output values.
+ */
+static int lm63_lut_looks_bad(struct device *dev, struct lm63_data *data)
+{
+ int i;
+
+ mutex_lock(&data->update_lock);
+ lm63_update_lut(data);
+
+ for (i = 1; i < data->lut_size; i++) {
+ if (data->pwm1[1 + i - 1] > data->pwm1[1 + i]
+ || data->temp8[3 + i - 1] > data->temp8[3 + i]) {
+ dev_warn(dev,
+ "Lookup table doesn't look sane (check entries %d and %d)\n",
+ i, i + 1);
+ break;
+ }
+ }
+ mutex_unlock(&data->update_lock);
+
+ return i == data->lut_size ? 0 : 1;
+}
+
+/*
+ * Sysfs callback functions and files
+ */
+
+static ssize_t show_fan(struct device *dev, struct device_attribute *devattr,
+ char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct lm63_data *data = lm63_update_device(dev);
+ return sprintf(buf, "%d\n", FAN_FROM_REG(data->fan[attr->index]));
+}
+
+static ssize_t set_fan(struct device *dev, struct device_attribute *dummy,
+ const char *buf, size_t count)
+{
+ struct lm63_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ unsigned long val;
+ int err;
+
+ err = kstrtoul(buf, 10, &val);
+ if (err)
+ return err;
+
+ mutex_lock(&data->update_lock);
+ data->fan[1] = FAN_TO_REG(val);
+ i2c_smbus_write_byte_data(client, LM63_REG_TACH_LIMIT_LSB,
+ data->fan[1] & 0xFF);
+ i2c_smbus_write_byte_data(client, LM63_REG_TACH_LIMIT_MSB,
+ data->fan[1] >> 8);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+static ssize_t show_pwm1(struct device *dev, struct device_attribute *devattr,
+ char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct lm63_data *data = lm63_update_device(dev);
+ int nr = attr->index;
+ int pwm;
+
+ if (data->pwm_highres)
+ pwm = data->pwm1[nr];
+ else
+ pwm = data->pwm1[nr] >= 2 * data->pwm1_freq ?
+ 255 : (data->pwm1[nr] * 255 + data->pwm1_freq) /
+ (2 * data->pwm1_freq);
+
+ return sprintf(buf, "%d\n", pwm);
+}
+
+static ssize_t set_pwm1(struct device *dev, struct device_attribute *devattr,
+ const char *buf, size_t count)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct lm63_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ int nr = attr->index;
+ unsigned long val;
+ int err;
+ u8 reg;
+
+ if (!(data->config_fan & 0x20)) /* register is read-only */
+ return -EPERM;
+
+ err = kstrtoul(buf, 10, &val);
+ if (err)
+ return err;
+
+ reg = nr ? LM63_REG_LUT_PWM(nr - 1) : LM63_REG_PWM_VALUE;
+ val = clamp_val(val, 0, 255);
+
+ mutex_lock(&data->update_lock);
+ data->pwm1[nr] = data->pwm_highres ? val :
+ (val * data->pwm1_freq * 2 + 127) / 255;
+ i2c_smbus_write_byte_data(client, reg, data->pwm1[nr]);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+static ssize_t show_pwm1_enable(struct device *dev,
+ struct device_attribute *dummy, char *buf)
+{
+ struct lm63_data *data = lm63_update_device(dev);
+ return sprintf(buf, "%d\n", data->config_fan & 0x20 ? 1 : 2);
+}
+
+static ssize_t set_pwm1_enable(struct device *dev,
+ struct device_attribute *dummy,
+ const char *buf, size_t count)
+{
+ struct lm63_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ unsigned long val;
+ int err;
+
+ err = kstrtoul(buf, 10, &val);
+ if (err)
+ return err;
+ if (val < 1 || val > 2)
+ return -EINVAL;
+
+ /*
+ * Only let the user switch to automatic mode if the lookup table
+ * looks sane.
+ */
+ if (val == 2 && lm63_lut_looks_bad(dev, data))
+ return -EPERM;
+
+ mutex_lock(&data->update_lock);
+ data->config_fan = i2c_smbus_read_byte_data(client,
+ LM63_REG_CONFIG_FAN);
+ if (val == 1)
+ data->config_fan |= 0x20;
+ else
+ data->config_fan &= ~0x20;
+ i2c_smbus_write_byte_data(client, LM63_REG_CONFIG_FAN,
+ data->config_fan);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+/*
+ * There are 8bit registers for both local(temp1) and remote(temp2) sensor.
+ * For remote sensor registers temp2_offset has to be considered,
+ * for local sensor it must not.
+ * So we need separate 8bit accessors for local and remote sensor.
+ */
+static ssize_t show_local_temp8(struct device *dev,
+ struct device_attribute *devattr,
+ char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct lm63_data *data = lm63_update_device(dev);
+ return sprintf(buf, "%d\n", TEMP8_FROM_REG(data->temp8[attr->index]));
+}
+
+static ssize_t show_remote_temp8(struct device *dev,
+ struct device_attribute *devattr,
+ char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct lm63_data *data = lm63_update_device(dev);
+ return sprintf(buf, "%d\n", temp8_from_reg(data, attr->index)
+ + data->temp2_offset);
+}
+
+static ssize_t show_lut_temp(struct device *dev,
+ struct device_attribute *devattr,
+ char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct lm63_data *data = lm63_update_device(dev);
+ return sprintf(buf, "%d\n", lut_temp_from_reg(data, attr->index)
+ + data->temp2_offset);
+}
+
+static ssize_t set_temp8(struct device *dev, struct device_attribute *devattr,
+ const char *buf, size_t count)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct lm63_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ int nr = attr->index;
+ long val;
+ int err;
+ int temp;
+ u8 reg;
+
+ err = kstrtol(buf, 10, &val);
+ if (err)
+ return err;
+
+ mutex_lock(&data->update_lock);
+ switch (nr) {
+ case 2:
+ reg = LM63_REG_REMOTE_TCRIT;
+ if (data->remote_unsigned)
+ temp = TEMP8U_TO_REG(val - data->temp2_offset);
+ else
+ temp = TEMP8_TO_REG(val - data->temp2_offset);
+ break;
+ case 1:
+ reg = LM63_REG_LOCAL_HIGH;
+ temp = TEMP8_TO_REG(val);
+ break;
+ default: /* lookup table */
+ reg = LM63_REG_LUT_TEMP(nr - 3);
+ temp = lut_temp_to_reg(data, val);
+ }
+ data->temp8[nr] = temp;
+ i2c_smbus_write_byte_data(client, reg, temp);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+static ssize_t show_temp11(struct device *dev, struct device_attribute *devattr,
+ char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct lm63_data *data = lm63_update_device(dev);
+ int nr = attr->index;
+ int temp;
+
+ if (!nr) {
+ /*
+ * Use unsigned temperature unless its value is zero.
+ * If it is zero, use signed temperature.
+ */
+ if (data->temp11u)
+ temp = TEMP11_FROM_REG(data->temp11u);
+ else
+ temp = TEMP11_FROM_REG(data->temp11[nr]);
+ } else {
+ if (data->remote_unsigned && nr == 2)
+ temp = TEMP11_FROM_REG((u16)data->temp11[nr]);
+ else
+ temp = TEMP11_FROM_REG(data->temp11[nr]);
+ }
+ return sprintf(buf, "%d\n", temp + data->temp2_offset);
+}
+
+static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr,
+ const char *buf, size_t count)
+{
+ static const u8 reg[6] = {
+ LM63_REG_REMOTE_LOW_MSB,
+ LM63_REG_REMOTE_LOW_LSB,
+ LM63_REG_REMOTE_HIGH_MSB,
+ LM63_REG_REMOTE_HIGH_LSB,
+ LM63_REG_REMOTE_OFFSET_MSB,
+ LM63_REG_REMOTE_OFFSET_LSB,
+ };
+
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct lm63_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ long val;
+ int err;
+ int nr = attr->index;
+
+ err = kstrtol(buf, 10, &val);
+ if (err)
+ return err;
+
+ mutex_lock(&data->update_lock);
+ if (data->remote_unsigned && nr == 2)
+ data->temp11[nr] = TEMP11U_TO_REG(val - data->temp2_offset);
+ else
+ data->temp11[nr] = TEMP11_TO_REG(val - data->temp2_offset);
+
+ i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2],
+ data->temp11[nr] >> 8);
+ i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2 + 1],
+ data->temp11[nr] & 0xff);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+/*
+ * Hysteresis register holds a relative value, while we want to present
+ * an absolute to user-space
+ */
+static ssize_t show_temp2_crit_hyst(struct device *dev,
+ struct device_attribute *dummy, char *buf)
+{
+ struct lm63_data *data = lm63_update_device(dev);
+ return sprintf(buf, "%d\n", temp8_from_reg(data, 2)
+ + data->temp2_offset
+ - TEMP8_FROM_REG(data->temp2_crit_hyst));
+}
+
+static ssize_t show_lut_temp_hyst(struct device *dev,
+ struct device_attribute *devattr, char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct lm63_data *data = lm63_update_device(dev);
+
+ return sprintf(buf, "%d\n", lut_temp_from_reg(data, attr->index)
+ + data->temp2_offset
+ - TEMP8_FROM_REG(data->lut_temp_hyst));
+}
+
+/*
+ * And now the other way around, user-space provides an absolute
+ * hysteresis value and we have to store a relative one
+ */
+static ssize_t set_temp2_crit_hyst(struct device *dev,
+ struct device_attribute *dummy,
+ const char *buf, size_t count)
+{
+ struct lm63_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ long val;
+ int err;
+ long hyst;
+
+ err = kstrtol(buf, 10, &val);
+ if (err)
+ return err;
+
+ mutex_lock(&data->update_lock);
+ hyst = temp8_from_reg(data, 2) + data->temp2_offset - val;
+ i2c_smbus_write_byte_data(client, LM63_REG_REMOTE_TCRIT_HYST,
+ HYST_TO_REG(hyst));
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+/*
+ * Set conversion rate.
+ * client->update_lock must be held when calling this function.
+ */
+static void lm63_set_convrate(struct lm63_data *data, unsigned int interval)
+{
+ struct i2c_client *client = data->client;
+ unsigned int update_interval;
+ int i;
+
+ /* Shift calculations to avoid rounding errors */
+ interval <<= 6;
+
+ /* find the nearest update rate */
+ update_interval = (1 << (LM63_MAX_CONVRATE + 6)) * 1000
+ / data->max_convrate_hz;
+ for (i = 0; i < LM63_MAX_CONVRATE; i++, update_interval >>= 1)
+ if (interval >= update_interval * 3 / 4)
+ break;
+
+ i2c_smbus_write_byte_data(client, LM63_REG_CONVRATE, i);
+ data->update_interval = UPDATE_INTERVAL(data->max_convrate_hz, i);
+}
+
+static ssize_t show_update_interval(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct lm63_data *data = dev_get_drvdata(dev);
+
+ return sprintf(buf, "%u\n", data->update_interval);
+}
+
+static ssize_t set_update_interval(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct lm63_data *data = dev_get_drvdata(dev);
+ unsigned long val;
+ int err;
+
+ err = kstrtoul(buf, 10, &val);
+ if (err)
+ return err;
+
+ mutex_lock(&data->update_lock);
+ lm63_set_convrate(data, clamp_val(val, 0, 100000));
+ mutex_unlock(&data->update_lock);
+
+ return count;
+}
+
+static ssize_t show_type(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct lm63_data *data = dev_get_drvdata(dev);
+
+ return sprintf(buf, data->trutherm ? "1\n" : "2\n");
+}
+
+static ssize_t set_type(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct lm63_data *data = dev_get_drvdata(dev);
+ struct i2c_client *client = data->client;
+ unsigned long val;
+ int ret;
+ u8 reg;
+
+ ret = kstrtoul(buf, 10, &val);
+ if (ret < 0)
+ return ret;
+ if (val != 1 && val != 2)
+ return -EINVAL;
+
+ mutex_lock(&data->update_lock);
+ data->trutherm = val == 1;
+ reg = i2c_smbus_read_byte_data(client, LM96163_REG_TRUTHERM) & ~0x02;
+ i2c_smbus_write_byte_data(client, LM96163_REG_TRUTHERM,
+ reg | (data->trutherm ? 0x02 : 0x00));
+ data->valid = 0;
+ mutex_unlock(&data->update_lock);
+
+ return count;
+}
+
+static ssize_t show_alarms(struct device *dev, struct device_attribute *dummy,
+ char *buf)
+{
+ struct lm63_data *data = lm63_update_device(dev);
+ return sprintf(buf, "%u\n", data->alarms);
+}
+
+static ssize_t show_alarm(struct device *dev, struct device_attribute *devattr,
+ char *buf)
+{
+ struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
+ struct lm63_data *data = lm63_update_device(dev);
+ int bitnr = attr->index;
+
+ return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1);
+}
+
+static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0);
+static SENSOR_DEVICE_ATTR(fan1_min, S_IWUSR | S_IRUGO, show_fan,
+ set_fan, 1);
+
+static SENSOR_DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, show_pwm1, set_pwm1, 0);
+static DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO,
+ show_pwm1_enable, set_pwm1_enable);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point1_pwm, S_IWUSR | S_IRUGO,
+ show_pwm1, set_pwm1, 1);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point1_temp, S_IWUSR | S_IRUGO,
+ show_lut_temp, set_temp8, 3);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point1_temp_hyst, S_IRUGO,
+ show_lut_temp_hyst, NULL, 3);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point2_pwm, S_IWUSR | S_IRUGO,
+ show_pwm1, set_pwm1, 2);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point2_temp, S_IWUSR | S_IRUGO,
+ show_lut_temp, set_temp8, 4);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point2_temp_hyst, S_IRUGO,
+ show_lut_temp_hyst, NULL, 4);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point3_pwm, S_IWUSR | S_IRUGO,
+ show_pwm1, set_pwm1, 3);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point3_temp, S_IWUSR | S_IRUGO,
+ show_lut_temp, set_temp8, 5);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point3_temp_hyst, S_IRUGO,
+ show_lut_temp_hyst, NULL, 5);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point4_pwm, S_IWUSR | S_IRUGO,
+ show_pwm1, set_pwm1, 4);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point4_temp, S_IWUSR | S_IRUGO,
+ show_lut_temp, set_temp8, 6);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point4_temp_hyst, S_IRUGO,
+ show_lut_temp_hyst, NULL, 6);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point5_pwm, S_IWUSR | S_IRUGO,
+ show_pwm1, set_pwm1, 5);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point5_temp, S_IWUSR | S_IRUGO,
+ show_lut_temp, set_temp8, 7);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point5_temp_hyst, S_IRUGO,
+ show_lut_temp_hyst, NULL, 7);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point6_pwm, S_IWUSR | S_IRUGO,
+ show_pwm1, set_pwm1, 6);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point6_temp, S_IWUSR | S_IRUGO,
+ show_lut_temp, set_temp8, 8);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point6_temp_hyst, S_IRUGO,
+ show_lut_temp_hyst, NULL, 8);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point7_pwm, S_IWUSR | S_IRUGO,
+ show_pwm1, set_pwm1, 7);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point7_temp, S_IWUSR | S_IRUGO,
+ show_lut_temp, set_temp8, 9);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point7_temp_hyst, S_IRUGO,
+ show_lut_temp_hyst, NULL, 9);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point8_pwm, S_IWUSR | S_IRUGO,
+ show_pwm1, set_pwm1, 8);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point8_temp, S_IWUSR | S_IRUGO,
+ show_lut_temp, set_temp8, 10);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point8_temp_hyst, S_IRUGO,
+ show_lut_temp_hyst, NULL, 10);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point9_pwm, S_IWUSR | S_IRUGO,
+ show_pwm1, set_pwm1, 9);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point9_temp, S_IWUSR | S_IRUGO,
+ show_lut_temp, set_temp8, 11);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point9_temp_hyst, S_IRUGO,
+ show_lut_temp_hyst, NULL, 11);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point10_pwm, S_IWUSR | S_IRUGO,
+ show_pwm1, set_pwm1, 10);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point10_temp, S_IWUSR | S_IRUGO,
+ show_lut_temp, set_temp8, 12);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point10_temp_hyst, S_IRUGO,
+ show_lut_temp_hyst, NULL, 12);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point11_pwm, S_IWUSR | S_IRUGO,
+ show_pwm1, set_pwm1, 11);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point11_temp, S_IWUSR | S_IRUGO,
+ show_lut_temp, set_temp8, 13);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point11_temp_hyst, S_IRUGO,
+ show_lut_temp_hyst, NULL, 13);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point12_pwm, S_IWUSR | S_IRUGO,
+ show_pwm1, set_pwm1, 12);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point12_temp, S_IWUSR | S_IRUGO,
+ show_lut_temp, set_temp8, 14);
+static SENSOR_DEVICE_ATTR(pwm1_auto_point12_temp_hyst, S_IRUGO,
+ show_lut_temp_hyst, NULL, 14);
+
+static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_local_temp8, NULL, 0);
+static SENSOR_DEVICE_ATTR(temp1_max, S_IWUSR | S_IRUGO, show_local_temp8,
+ set_temp8, 1);
+
+static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp11, NULL, 0);
+static SENSOR_DEVICE_ATTR(temp2_min, S_IWUSR | S_IRUGO, show_temp11,
+ set_temp11, 1);
+static SENSOR_DEVICE_ATTR(temp2_max, S_IWUSR | S_IRUGO, show_temp11,
+ set_temp11, 2);
+static SENSOR_DEVICE_ATTR(temp2_offset, S_IWUSR | S_IRUGO, show_temp11,
+ set_temp11, 3);
+static SENSOR_DEVICE_ATTR(temp2_crit, S_IRUGO, show_remote_temp8,
+ set_temp8, 2);
+static DEVICE_ATTR(temp2_crit_hyst, S_IWUSR | S_IRUGO, show_temp2_crit_hyst,
+ set_temp2_crit_hyst);
+
+static DEVICE_ATTR(temp2_type, S_IWUSR | S_IRUGO, show_type, set_type);
+
+/* Individual alarm files */
+static SENSOR_DEVICE_ATTR(fan1_min_alarm, S_IRUGO, show_alarm, NULL, 0);
+static SENSOR_DEVICE_ATTR(temp2_crit_alarm, S_IRUGO, show_alarm, NULL, 1);
+static SENSOR_DEVICE_ATTR(temp2_fault, S_IRUGO, show_alarm, NULL, 2);
+static SENSOR_DEVICE_ATTR(temp2_min_alarm, S_IRUGO, show_alarm, NULL, 3);
+static SENSOR_DEVICE_ATTR(temp2_max_alarm, S_IRUGO, show_alarm, NULL, 4);
+static SENSOR_DEVICE_ATTR(temp1_max_alarm, S_IRUGO, show_alarm, NULL, 6);
+/* Raw alarm file for compatibility */
+static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL);
+
+static DEVICE_ATTR(update_interval, S_IRUGO | S_IWUSR, show_update_interval,
+ set_update_interval);
+
+static struct attribute *lm63_attributes[] = {
+ &sensor_dev_attr_pwm1.dev_attr.attr,
+ &dev_attr_pwm1_enable.attr,
+ &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point1_temp_hyst.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point2_temp_hyst.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point3_temp_hyst.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point4_temp_hyst.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point5_pwm.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point5_temp.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point5_temp_hyst.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point6_pwm.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point6_temp.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point6_temp_hyst.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point7_pwm.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point7_temp.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point7_temp_hyst.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point8_pwm.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point8_temp.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point8_temp_hyst.dev_attr.attr,
+
+ &sensor_dev_attr_temp1_input.dev_attr.attr,
+ &sensor_dev_attr_temp2_input.dev_attr.attr,
+ &sensor_dev_attr_temp2_min.dev_attr.attr,
+ &sensor_dev_attr_temp1_max.dev_attr.attr,
+ &sensor_dev_attr_temp2_max.dev_attr.attr,
+ &sensor_dev_attr_temp2_offset.dev_attr.attr,
+ &sensor_dev_attr_temp2_crit.dev_attr.attr,
+ &dev_attr_temp2_crit_hyst.attr,
+
+ &sensor_dev_attr_temp2_crit_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp2_fault.dev_attr.attr,
+ &sensor_dev_attr_temp2_min_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp2_max_alarm.dev_attr.attr,
+ &sensor_dev_attr_temp1_max_alarm.dev_attr.attr,
+ &dev_attr_alarms.attr,
+ &dev_attr_update_interval.attr,
+ NULL
+};
+
+static struct attribute *lm63_attributes_temp2_type[] = {
+ &dev_attr_temp2_type.attr,
+ NULL
+};
+
+static const struct attribute_group lm63_group_temp2_type = {
+ .attrs = lm63_attributes_temp2_type,
+};
+
+static struct attribute *lm63_attributes_extra_lut[] = {
+ &sensor_dev_attr_pwm1_auto_point9_pwm.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point9_temp.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point9_temp_hyst.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point10_pwm.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point10_temp.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point10_temp_hyst.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point11_pwm.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point11_temp.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point11_temp_hyst.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point12_pwm.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point12_temp.dev_attr.attr,
+ &sensor_dev_attr_pwm1_auto_point12_temp_hyst.dev_attr.attr,
+ NULL
+};
+
+static const struct attribute_group lm63_group_extra_lut = {
+ .attrs = lm63_attributes_extra_lut,
+};
+
+/*
+ * On LM63, temp2_crit can be set only once, which should be job
+ * of the bootloader.
+ * On LM64, temp2_crit can always be set.
+ * On LM96163, temp2_crit can be set if bit 1 of the configuration
+ * register is true.
+ */
+static umode_t lm63_attribute_mode(struct kobject *kobj,
+ struct attribute *attr, int index)
+{
+ struct device *dev = container_of(kobj, struct device, kobj);
+ struct lm63_data *data = dev_get_drvdata(dev);
+
+ if (attr == &sensor_dev_attr_temp2_crit.dev_attr.attr
+ && (data->kind == lm64 ||
+ (data->kind == lm96163 && (data->config & 0x02))))
+ return attr->mode | S_IWUSR;
+
+ return attr->mode;
+}
+
+static const struct attribute_group lm63_group = {
+ .is_visible = lm63_attribute_mode,
+ .attrs = lm63_attributes,
+};
+
+static struct attribute *lm63_attributes_fan1[] = {
+ &sensor_dev_attr_fan1_input.dev_attr.attr,
+ &sensor_dev_attr_fan1_min.dev_attr.attr,
+
+ &sensor_dev_attr_fan1_min_alarm.dev_attr.attr,
+ NULL
+};
+
+static const struct attribute_group lm63_group_fan1 = {
+ .attrs = lm63_attributes_fan1,
+};
+
+/*
+ * Real code
+ */
+
+/* Return 0 if detection is successful, -ENODEV otherwise */
+static int lm63_detect(struct i2c_client *client,
+ struct i2c_board_info *info)
+{
+ struct i2c_adapter *adapter = client->adapter;
+ u8 man_id, chip_id, reg_config1, reg_config2;
+ u8 reg_alert_status, reg_alert_mask;
+ int address = client->addr;
+
+ if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+ return -ENODEV;
+
+ man_id = i2c_smbus_read_byte_data(client, LM63_REG_MAN_ID);
+ chip_id = i2c_smbus_read_byte_data(client, LM63_REG_CHIP_ID);
+
+ reg_config1 = i2c_smbus_read_byte_data(client, LM63_REG_CONFIG1);
+ reg_config2 = i2c_smbus_read_byte_data(client, LM63_REG_CONFIG2);
+ reg_alert_status = i2c_smbus_read_byte_data(client,
+ LM63_REG_ALERT_STATUS);
+ reg_alert_mask = i2c_smbus_read_byte_data(client, LM63_REG_ALERT_MASK);
+
+ if (man_id != 0x01 /* National Semiconductor */
+ || (reg_config1 & 0x18) != 0x00
+ || (reg_config2 & 0xF8) != 0x00
+ || (reg_alert_status & 0x20) != 0x00
+ || (reg_alert_mask & 0xA4) != 0xA4) {
+ dev_dbg(&adapter->dev,
+ "Unsupported chip (man_id=0x%02X, chip_id=0x%02X)\n",
+ man_id, chip_id);
+ return -ENODEV;
+ }
+
+ if (chip_id == 0x41 && address == 0x4c)
+ strlcpy(info->type, "lm63", I2C_NAME_SIZE);
+ else if (chip_id == 0x51 && (address == 0x18 || address == 0x4e))
+ strlcpy(info->type, "lm64", I2C_NAME_SIZE);
+ else if (chip_id == 0x49 && address == 0x4c)
+ strlcpy(info->type, "lm96163", I2C_NAME_SIZE);
+ else
+ return -ENODEV;
+
+ return 0;
+}
+
+/*
+ * Ideally we shouldn't have to initialize anything, since the BIOS
+ * should have taken care of everything
+ */
+static void lm63_init_client(struct lm63_data *data)
+{
+ struct i2c_client *client = data->client;
+ struct device *dev = &client->dev;
+ u8 convrate;
+
+ data->config = i2c_smbus_read_byte_data(client, LM63_REG_CONFIG1);
+ data->config_fan = i2c_smbus_read_byte_data(client,
+ LM63_REG_CONFIG_FAN);
+
+ /* Start converting if needed */
+ if (data->config & 0x40) { /* standby */
+ dev_dbg(dev, "Switching to operational mode\n");
+ data->config &= 0xA7;
+ i2c_smbus_write_byte_data(client, LM63_REG_CONFIG1,
+ data->config);
+ }
+ /* Tachometer is always enabled on LM64 */
+ if (data->kind == lm64)
+ data->config |= 0x04;
+
+ /* We may need pwm1_freq before ever updating the client data */
+ data->pwm1_freq = i2c_smbus_read_byte_data(client, LM63_REG_PWM_FREQ);
+ if (data->pwm1_freq == 0)
+ data->pwm1_freq = 1;
+
+ switch (data->kind) {
+ case lm63:
+ case lm64:
+ data->max_convrate_hz = LM63_MAX_CONVRATE_HZ;
+ data->lut_size = 8;
+ break;
+ case lm96163:
+ data->max_convrate_hz = LM96163_MAX_CONVRATE_HZ;
+ data->lut_size = 12;
+ data->trutherm
+ = i2c_smbus_read_byte_data(client,
+ LM96163_REG_TRUTHERM) & 0x02;
+ break;
+ }
+ convrate = i2c_smbus_read_byte_data(client, LM63_REG_CONVRATE);
+ if (unlikely(convrate > LM63_MAX_CONVRATE))
+ convrate = LM63_MAX_CONVRATE;
+ data->update_interval = UPDATE_INTERVAL(data->max_convrate_hz,
+ convrate);
+
+ /*
+ * For LM96163, check if high resolution PWM
+ * and unsigned temperature format is enabled.
+ */
+ if (data->kind == lm96163) {
+ u8 config_enhanced
+ = i2c_smbus_read_byte_data(client,
+ LM96163_REG_CONFIG_ENHANCED);
+ if (config_enhanced & 0x20)
+ data->lut_temp_highres = true;
+ if ((config_enhanced & 0x10)
+ && !(data->config_fan & 0x08) && data->pwm1_freq == 8)
+ data->pwm_highres = true;
+ if (config_enhanced & 0x08)
+ data->remote_unsigned = true;
+ }
+
+ /* Show some debug info about the LM63 configuration */
+ if (data->kind == lm63)
+ dev_dbg(dev, "Alert/tach pin configured for %s\n",
+ (data->config & 0x04) ? "tachometer input" :
+ "alert output");
+ dev_dbg(dev, "PWM clock %s kHz, output frequency %u Hz\n",
+ (data->config_fan & 0x08) ? "1.4" : "360",
+ ((data->config_fan & 0x08) ? 700 : 180000) / data->pwm1_freq);
+ dev_dbg(dev, "PWM output active %s, %s mode\n",
+ (data->config_fan & 0x10) ? "low" : "high",
+ (data->config_fan & 0x20) ? "manual" : "auto");
+}
+
+static int lm63_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct device *dev = &client->dev;
+ struct device *hwmon_dev;
+ struct lm63_data *data;
+ int groups = 0;
+
+ data = devm_kzalloc(dev, sizeof(struct lm63_data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ data->client = client;
+ mutex_init(&data->update_lock);
+
+ /* Set the device type */
+ data->kind = id->driver_data;
+ if (data->kind == lm64)
+ data->temp2_offset = 16000;
+
+ /* Initialize chip */
+ lm63_init_client(data);
+
+ /* Register sysfs hooks */
+ data->groups[groups++] = &lm63_group;
+ if (data->config & 0x04) /* tachometer enabled */
+ data->groups[groups++] = &lm63_group_fan1;
+
+ if (data->kind == lm96163) {
+ data->groups[groups++] = &lm63_group_temp2_type;
+ data->groups[groups++] = &lm63_group_extra_lut;
+ }
+
+ hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
+ data, data->groups);
+ return PTR_ERR_OR_ZERO(hwmon_dev);
+}
+
+/*
+ * Driver data (common to all clients)
+ */
+
+static const struct i2c_device_id lm63_id[] = {
+ { "lm63", lm63 },
+ { "lm64", lm64 },
+ { "lm96163", lm96163 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, lm63_id);
+
+static struct i2c_driver lm63_driver = {
+ .class = I2C_CLASS_HWMON,
+ .driver = {
+ .name = "lm63",
+ },
+ .probe = lm63_probe,
+ .id_table = lm63_id,
+ .detect = lm63_detect,
+ .address_list = normal_i2c,
+};
+
+module_i2c_driver(lm63_driver);
+
+MODULE_AUTHOR("Jean Delvare <jdelvare@suse.de>");
+MODULE_DESCRIPTION("LM63 driver");
+MODULE_LICENSE("GPL");
Code Review / kvmfornfv.git / blobdiff