--- /dev/null
+/*
+ * f75375s.c - driver for the Fintek F75375/SP, F75373 and
+ * F75387SG/RG hardware monitoring features
+ * Copyright (C) 2006-2007 Riku Voipio
+ *
+ * Datasheets available at:
+ *
+ * f75375:
+ * http://www.fintek.com.tw/files/productfiles/F75375_V026P.pdf
+ *
+ * f75373:
+ * http://www.fintek.com.tw/files/productfiles/F75373_V025P.pdf
+ *
+ * f75387:
+ * http://www.fintek.com.tw/files/productfiles/F75387_V027P.pdf
+ *
+ * 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/jiffies.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/i2c.h>
+#include <linux/err.h>
+#include <linux/mutex.h>
+#include <linux/f75375s.h>
+#include <linux/slab.h>
+
+/* Addresses to scan */
+static const unsigned short normal_i2c[] = { 0x2d, 0x2e, I2C_CLIENT_END };
+
+enum chips { f75373, f75375, f75387 };
+
+/* Fintek F75375 registers */
+#define F75375_REG_CONFIG0 0x0
+#define F75375_REG_CONFIG1 0x1
+#define F75375_REG_CONFIG2 0x2
+#define F75375_REG_CONFIG3 0x3
+#define F75375_REG_ADDR 0x4
+#define F75375_REG_INTR 0x31
+#define F75375_CHIP_ID 0x5A
+#define F75375_REG_VERSION 0x5C
+#define F75375_REG_VENDOR 0x5D
+#define F75375_REG_FAN_TIMER 0x60
+
+#define F75375_REG_VOLT(nr) (0x10 + (nr))
+#define F75375_REG_VOLT_HIGH(nr) (0x20 + (nr) * 2)
+#define F75375_REG_VOLT_LOW(nr) (0x21 + (nr) * 2)
+
+#define F75375_REG_TEMP(nr) (0x14 + (nr))
+#define F75387_REG_TEMP11_LSB(nr) (0x1a + (nr))
+#define F75375_REG_TEMP_HIGH(nr) (0x28 + (nr) * 2)
+#define F75375_REG_TEMP_HYST(nr) (0x29 + (nr) * 2)
+
+#define F75375_REG_FAN(nr) (0x16 + (nr) * 2)
+#define F75375_REG_FAN_MIN(nr) (0x2C + (nr) * 2)
+#define F75375_REG_FAN_FULL(nr) (0x70 + (nr) * 0x10)
+#define F75375_REG_FAN_PWM_DUTY(nr) (0x76 + (nr) * 0x10)
+#define F75375_REG_FAN_PWM_CLOCK(nr) (0x7D + (nr) * 0x10)
+
+#define F75375_REG_FAN_EXP(nr) (0x74 + (nr) * 0x10)
+#define F75375_REG_FAN_B_TEMP(nr, step) ((0xA0 + (nr) * 0x10) + (step))
+#define F75375_REG_FAN_B_SPEED(nr, step) \
+ ((0xA5 + (nr) * 0x10) + (step) * 2)
+
+#define F75375_REG_PWM1_RAISE_DUTY 0x69
+#define F75375_REG_PWM2_RAISE_DUTY 0x6A
+#define F75375_REG_PWM1_DROP_DUTY 0x6B
+#define F75375_REG_PWM2_DROP_DUTY 0x6C
+
+#define F75375_FAN_CTRL_LINEAR(nr) (4 + nr)
+#define F75387_FAN_CTRL_LINEAR(nr) (1 + ((nr) * 4))
+#define FAN_CTRL_MODE(nr) (4 + ((nr) * 2))
+#define F75387_FAN_DUTY_MODE(nr) (2 + ((nr) * 4))
+#define F75387_FAN_MANU_MODE(nr) ((nr) * 4)
+
+/*
+ * Data structures and manipulation thereof
+ */
+
+struct f75375_data {
+ unsigned short addr;
+ struct device *hwmon_dev;
+
+ const char *name;
+ int kind;
+ struct mutex update_lock; /* protect register access */
+ char valid;
+ unsigned long last_updated; /* In jiffies */
+ unsigned long last_limits; /* In jiffies */
+
+ /* Register values */
+ u8 in[4];
+ u8 in_max[4];
+ u8 in_min[4];
+ u16 fan[2];
+ u16 fan_min[2];
+ u16 fan_max[2];
+ u16 fan_target[2];
+ u8 fan_timer;
+ u8 pwm[2];
+ u8 pwm_mode[2];
+ u8 pwm_enable[2];
+ /*
+ * f75387: For remote temperature reading, it uses signed 11-bit
+ * values with LSB = 0.125 degree Celsius, left-justified in 16-bit
+ * registers. For original 8-bit temp readings, the LSB just is 0.
+ */
+ s16 temp11[2];
+ s8 temp_high[2];
+ s8 temp_max_hyst[2];
+};
+
+static int f75375_detect(struct i2c_client *client,
+ struct i2c_board_info *info);
+static int f75375_probe(struct i2c_client *client,
+ const struct i2c_device_id *id);
+static int f75375_remove(struct i2c_client *client);
+
+static const struct i2c_device_id f75375_id[] = {
+ { "f75373", f75373 },
+ { "f75375", f75375 },
+ { "f75387", f75387 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, f75375_id);
+
+static struct i2c_driver f75375_driver = {
+ .class = I2C_CLASS_HWMON,
+ .driver = {
+ .name = "f75375",
+ },
+ .probe = f75375_probe,
+ .remove = f75375_remove,
+ .id_table = f75375_id,
+ .detect = f75375_detect,
+ .address_list = normal_i2c,
+};
+
+static inline int f75375_read8(struct i2c_client *client, u8 reg)
+{
+ return i2c_smbus_read_byte_data(client, reg);
+}
+
+/* in most cases, should be called while holding update_lock */
+static inline u16 f75375_read16(struct i2c_client *client, u8 reg)
+{
+ return (i2c_smbus_read_byte_data(client, reg) << 8)
+ | i2c_smbus_read_byte_data(client, reg + 1);
+}
+
+static inline void f75375_write8(struct i2c_client *client, u8 reg,
+ u8 value)
+{
+ i2c_smbus_write_byte_data(client, reg, value);
+}
+
+static inline void f75375_write16(struct i2c_client *client, u8 reg,
+ u16 value)
+{
+ int err = i2c_smbus_write_byte_data(client, reg, (value >> 8));
+ if (err)
+ return;
+ i2c_smbus_write_byte_data(client, reg + 1, (value & 0xFF));
+}
+
+static void f75375_write_pwm(struct i2c_client *client, int nr)
+{
+ struct f75375_data *data = i2c_get_clientdata(client);
+ if (data->kind == f75387)
+ f75375_write16(client, F75375_REG_FAN_EXP(nr), data->pwm[nr]);
+ else
+ f75375_write8(client, F75375_REG_FAN_PWM_DUTY(nr),
+ data->pwm[nr]);
+}
+
+static struct f75375_data *f75375_update_device(struct device *dev)
+{
+ struct i2c_client *client = to_i2c_client(dev);
+ struct f75375_data *data = i2c_get_clientdata(client);
+ int nr;
+
+ mutex_lock(&data->update_lock);
+
+ /* Limit registers cache is refreshed after 60 seconds */
+ if (time_after(jiffies, data->last_limits + 60 * HZ)
+ || !data->valid) {
+ for (nr = 0; nr < 2; nr++) {
+ data->temp_high[nr] =
+ f75375_read8(client, F75375_REG_TEMP_HIGH(nr));
+ data->temp_max_hyst[nr] =
+ f75375_read8(client, F75375_REG_TEMP_HYST(nr));
+ data->fan_max[nr] =
+ f75375_read16(client, F75375_REG_FAN_FULL(nr));
+ data->fan_min[nr] =
+ f75375_read16(client, F75375_REG_FAN_MIN(nr));
+ data->fan_target[nr] =
+ f75375_read16(client, F75375_REG_FAN_EXP(nr));
+ }
+ for (nr = 0; nr < 4; nr++) {
+ data->in_max[nr] =
+ f75375_read8(client, F75375_REG_VOLT_HIGH(nr));
+ data->in_min[nr] =
+ f75375_read8(client, F75375_REG_VOLT_LOW(nr));
+ }
+ data->fan_timer = f75375_read8(client, F75375_REG_FAN_TIMER);
+ data->last_limits = jiffies;
+ }
+
+ /* Measurement registers cache is refreshed after 2 second */
+ if (time_after(jiffies, data->last_updated + 2 * HZ)
+ || !data->valid) {
+ for (nr = 0; nr < 2; nr++) {
+ data->pwm[nr] = f75375_read8(client,
+ F75375_REG_FAN_PWM_DUTY(nr));
+ /* assign MSB, therefore shift it by 8 bits */
+ data->temp11[nr] =
+ f75375_read8(client, F75375_REG_TEMP(nr)) << 8;
+ if (data->kind == f75387)
+ /* merge F75387's temperature LSB (11-bit) */
+ data->temp11[nr] |=
+ f75375_read8(client,
+ F75387_REG_TEMP11_LSB(nr));
+ data->fan[nr] =
+ f75375_read16(client, F75375_REG_FAN(nr));
+ }
+ for (nr = 0; nr < 4; nr++)
+ data->in[nr] =
+ f75375_read8(client, F75375_REG_VOLT(nr));
+
+ data->last_updated = jiffies;
+ data->valid = 1;
+ }
+
+ mutex_unlock(&data->update_lock);
+ return data;
+}
+
+static inline u16 rpm_from_reg(u16 reg)
+{
+ if (reg == 0 || reg == 0xffff)
+ return 0;
+ return 1500000 / reg;
+}
+
+static inline u16 rpm_to_reg(int rpm)
+{
+ if (rpm < 367 || rpm > 0xffff)
+ return 0xffff;
+ return 1500000 / rpm;
+}
+
+static bool duty_mode_enabled(u8 pwm_enable)
+{
+ switch (pwm_enable) {
+ case 0: /* Manual, duty mode (full speed) */
+ case 1: /* Manual, duty mode */
+ case 4: /* Auto, duty mode */
+ return true;
+ case 2: /* Auto, speed mode */
+ case 3: /* Manual, speed mode */
+ return false;
+ default:
+ WARN(1, "Unexpected pwm_enable value %d\n", pwm_enable);
+ return true;
+ }
+}
+
+static bool auto_mode_enabled(u8 pwm_enable)
+{
+ switch (pwm_enable) {
+ case 0: /* Manual, duty mode (full speed) */
+ case 1: /* Manual, duty mode */
+ case 3: /* Manual, speed mode */
+ return false;
+ case 2: /* Auto, speed mode */
+ case 4: /* Auto, duty mode */
+ return true;
+ default:
+ WARN(1, "Unexpected pwm_enable value %d\n", pwm_enable);
+ return false;
+ }
+}
+
+static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct i2c_client *client = to_i2c_client(dev);
+ struct f75375_data *data = i2c_get_clientdata(client);
+ unsigned long val;
+ int err;
+
+ err = kstrtoul(buf, 10, &val);
+ if (err < 0)
+ return err;
+
+ mutex_lock(&data->update_lock);
+ data->fan_min[nr] = rpm_to_reg(val);
+ f75375_write16(client, F75375_REG_FAN_MIN(nr), data->fan_min[nr]);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+static ssize_t set_fan_target(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct i2c_client *client = to_i2c_client(dev);
+ struct f75375_data *data = i2c_get_clientdata(client);
+ unsigned long val;
+ int err;
+
+ err = kstrtoul(buf, 10, &val);
+ if (err < 0)
+ return err;
+
+ if (auto_mode_enabled(data->pwm_enable[nr]))
+ return -EINVAL;
+ if (data->kind == f75387 && duty_mode_enabled(data->pwm_enable[nr]))
+ return -EINVAL;
+
+ mutex_lock(&data->update_lock);
+ data->fan_target[nr] = rpm_to_reg(val);
+ f75375_write16(client, F75375_REG_FAN_EXP(nr), data->fan_target[nr]);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+static ssize_t set_pwm(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct i2c_client *client = to_i2c_client(dev);
+ struct f75375_data *data = i2c_get_clientdata(client);
+ unsigned long val;
+ int err;
+
+ err = kstrtoul(buf, 10, &val);
+ if (err < 0)
+ return err;
+
+ if (auto_mode_enabled(data->pwm_enable[nr]) ||
+ !duty_mode_enabled(data->pwm_enable[nr]))
+ return -EINVAL;
+
+ mutex_lock(&data->update_lock);
+ data->pwm[nr] = clamp_val(val, 0, 255);
+ f75375_write_pwm(client, nr);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+static ssize_t show_pwm_enable(struct device *dev, struct device_attribute
+ *attr, char *buf)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct f75375_data *data = f75375_update_device(dev);
+ return sprintf(buf, "%d\n", data->pwm_enable[nr]);
+}
+
+static int set_pwm_enable_direct(struct i2c_client *client, int nr, int val)
+{
+ struct f75375_data *data = i2c_get_clientdata(client);
+ u8 fanmode;
+
+ if (val < 0 || val > 4)
+ return -EINVAL;
+
+ fanmode = f75375_read8(client, F75375_REG_FAN_TIMER);
+ if (data->kind == f75387) {
+ /* For now, deny dangerous toggling of duty mode */
+ if (duty_mode_enabled(data->pwm_enable[nr]) !=
+ duty_mode_enabled(val))
+ return -EOPNOTSUPP;
+ /* clear each fanX_mode bit before setting them properly */
+ fanmode &= ~(1 << F75387_FAN_DUTY_MODE(nr));
+ fanmode &= ~(1 << F75387_FAN_MANU_MODE(nr));
+ switch (val) {
+ case 0: /* full speed */
+ fanmode |= (1 << F75387_FAN_MANU_MODE(nr));
+ fanmode |= (1 << F75387_FAN_DUTY_MODE(nr));
+ data->pwm[nr] = 255;
+ break;
+ case 1: /* PWM */
+ fanmode |= (1 << F75387_FAN_MANU_MODE(nr));
+ fanmode |= (1 << F75387_FAN_DUTY_MODE(nr));
+ break;
+ case 2: /* Automatic, speed mode */
+ break;
+ case 3: /* fan speed */
+ fanmode |= (1 << F75387_FAN_MANU_MODE(nr));
+ break;
+ case 4: /* Automatic, pwm */
+ fanmode |= (1 << F75387_FAN_DUTY_MODE(nr));
+ break;
+ }
+ } else {
+ /* clear each fanX_mode bit before setting them properly */
+ fanmode &= ~(3 << FAN_CTRL_MODE(nr));
+ switch (val) {
+ case 0: /* full speed */
+ fanmode |= (3 << FAN_CTRL_MODE(nr));
+ data->pwm[nr] = 255;
+ break;
+ case 1: /* PWM */
+ fanmode |= (3 << FAN_CTRL_MODE(nr));
+ break;
+ case 2: /* AUTOMATIC*/
+ fanmode |= (1 << FAN_CTRL_MODE(nr));
+ break;
+ case 3: /* fan speed */
+ break;
+ case 4: /* Automatic pwm */
+ return -EINVAL;
+ }
+ }
+
+ f75375_write8(client, F75375_REG_FAN_TIMER, fanmode);
+ data->pwm_enable[nr] = val;
+ if (val == 0)
+ f75375_write_pwm(client, nr);
+ return 0;
+}
+
+static ssize_t set_pwm_enable(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct i2c_client *client = to_i2c_client(dev);
+ struct f75375_data *data = i2c_get_clientdata(client);
+ unsigned long val;
+ int err;
+
+ err = kstrtoul(buf, 10, &val);
+ if (err < 0)
+ return err;
+
+ mutex_lock(&data->update_lock);
+ err = set_pwm_enable_direct(client, nr, val);
+ mutex_unlock(&data->update_lock);
+ return err ? err : count;
+}
+
+static ssize_t set_pwm_mode(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct i2c_client *client = to_i2c_client(dev);
+ struct f75375_data *data = i2c_get_clientdata(client);
+ unsigned long val;
+ int err;
+ u8 conf;
+ char reg, ctrl;
+
+ err = kstrtoul(buf, 10, &val);
+ if (err < 0)
+ return err;
+
+ if (!(val == 0 || val == 1))
+ return -EINVAL;
+
+ /* F75373 does not support DC (linear voltage) fan control mode */
+ if (data->kind == f75373 && val == 0)
+ return -EINVAL;
+
+ /* take care for different registers */
+ if (data->kind == f75387) {
+ reg = F75375_REG_FAN_TIMER;
+ ctrl = F75387_FAN_CTRL_LINEAR(nr);
+ } else {
+ reg = F75375_REG_CONFIG1;
+ ctrl = F75375_FAN_CTRL_LINEAR(nr);
+ }
+
+ mutex_lock(&data->update_lock);
+ conf = f75375_read8(client, reg);
+ conf &= ~(1 << ctrl);
+
+ if (val == 0)
+ conf |= (1 << ctrl);
+
+ f75375_write8(client, reg, conf);
+ data->pwm_mode[nr] = val;
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+static ssize_t show_pwm(struct device *dev, struct device_attribute
+ *attr, char *buf)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct f75375_data *data = f75375_update_device(dev);
+ return sprintf(buf, "%d\n", data->pwm[nr]);
+}
+
+static ssize_t show_pwm_mode(struct device *dev, struct device_attribute
+ *attr, char *buf)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct f75375_data *data = f75375_update_device(dev);
+ return sprintf(buf, "%d\n", data->pwm_mode[nr]);
+}
+
+#define VOLT_FROM_REG(val) ((val) * 8)
+#define VOLT_TO_REG(val) ((val) / 8)
+
+static ssize_t show_in(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct f75375_data *data = f75375_update_device(dev);
+ return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in[nr]));
+}
+
+static ssize_t show_in_max(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct f75375_data *data = f75375_update_device(dev);
+ return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in_max[nr]));
+}
+
+static ssize_t show_in_min(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct f75375_data *data = f75375_update_device(dev);
+ return sprintf(buf, "%d\n", VOLT_FROM_REG(data->in_min[nr]));
+}
+
+static ssize_t set_in_max(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct i2c_client *client = to_i2c_client(dev);
+ struct f75375_data *data = i2c_get_clientdata(client);
+ unsigned long val;
+ int err;
+
+ err = kstrtoul(buf, 10, &val);
+ if (err < 0)
+ return err;
+
+ val = clamp_val(VOLT_TO_REG(val), 0, 0xff);
+ mutex_lock(&data->update_lock);
+ data->in_max[nr] = val;
+ f75375_write8(client, F75375_REG_VOLT_HIGH(nr), data->in_max[nr]);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+static ssize_t set_in_min(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct i2c_client *client = to_i2c_client(dev);
+ struct f75375_data *data = i2c_get_clientdata(client);
+ unsigned long val;
+ int err;
+
+ err = kstrtoul(buf, 10, &val);
+ if (err < 0)
+ return err;
+
+ val = clamp_val(VOLT_TO_REG(val), 0, 0xff);
+ mutex_lock(&data->update_lock);
+ data->in_min[nr] = val;
+ f75375_write8(client, F75375_REG_VOLT_LOW(nr), data->in_min[nr]);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+#define TEMP_FROM_REG(val) ((val) * 1000)
+#define TEMP_TO_REG(val) ((val) / 1000)
+#define TEMP11_FROM_REG(reg) ((reg) / 32 * 125)
+
+static ssize_t show_temp11(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct f75375_data *data = f75375_update_device(dev);
+ return sprintf(buf, "%d\n", TEMP11_FROM_REG(data->temp11[nr]));
+}
+
+static ssize_t show_temp_max(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct f75375_data *data = f75375_update_device(dev);
+ return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_high[nr]));
+}
+
+static ssize_t show_temp_max_hyst(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct f75375_data *data = f75375_update_device(dev);
+ return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp_max_hyst[nr]));
+}
+
+static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct i2c_client *client = to_i2c_client(dev);
+ struct f75375_data *data = i2c_get_clientdata(client);
+ unsigned long val;
+ int err;
+
+ err = kstrtoul(buf, 10, &val);
+ if (err < 0)
+ return err;
+
+ val = clamp_val(TEMP_TO_REG(val), 0, 127);
+ mutex_lock(&data->update_lock);
+ data->temp_high[nr] = val;
+ f75375_write8(client, F75375_REG_TEMP_HIGH(nr), data->temp_high[nr]);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+static ssize_t set_temp_max_hyst(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ int nr = to_sensor_dev_attr(attr)->index;
+ struct i2c_client *client = to_i2c_client(dev);
+ struct f75375_data *data = i2c_get_clientdata(client);
+ unsigned long val;
+ int err;
+
+ err = kstrtoul(buf, 10, &val);
+ if (err < 0)
+ return err;
+
+ val = clamp_val(TEMP_TO_REG(val), 0, 127);
+ mutex_lock(&data->update_lock);
+ data->temp_max_hyst[nr] = val;
+ f75375_write8(client, F75375_REG_TEMP_HYST(nr),
+ data->temp_max_hyst[nr]);
+ mutex_unlock(&data->update_lock);
+ return count;
+}
+
+#define show_fan(thing) \
+static ssize_t show_##thing(struct device *dev, struct device_attribute *attr, \
+ char *buf)\
+{\
+ int nr = to_sensor_dev_attr(attr)->index;\
+ struct f75375_data *data = f75375_update_device(dev); \
+ return sprintf(buf, "%d\n", rpm_from_reg(data->thing[nr])); \
+}
+
+show_fan(fan);
+show_fan(fan_min);
+show_fan(fan_max);
+show_fan(fan_target);
+
+static SENSOR_DEVICE_ATTR(in0_input, S_IRUGO, show_in, NULL, 0);
+static SENSOR_DEVICE_ATTR(in0_max, S_IRUGO|S_IWUSR,
+ show_in_max, set_in_max, 0);
+static SENSOR_DEVICE_ATTR(in0_min, S_IRUGO|S_IWUSR,
+ show_in_min, set_in_min, 0);
+static SENSOR_DEVICE_ATTR(in1_input, S_IRUGO, show_in, NULL, 1);
+static SENSOR_DEVICE_ATTR(in1_max, S_IRUGO|S_IWUSR,
+ show_in_max, set_in_max, 1);
+static SENSOR_DEVICE_ATTR(in1_min, S_IRUGO|S_IWUSR,
+ show_in_min, set_in_min, 1);
+static SENSOR_DEVICE_ATTR(in2_input, S_IRUGO, show_in, NULL, 2);
+static SENSOR_DEVICE_ATTR(in2_max, S_IRUGO|S_IWUSR,
+ show_in_max, set_in_max, 2);
+static SENSOR_DEVICE_ATTR(in2_min, S_IRUGO|S_IWUSR,
+ show_in_min, set_in_min, 2);
+static SENSOR_DEVICE_ATTR(in3_input, S_IRUGO, show_in, NULL, 3);
+static SENSOR_DEVICE_ATTR(in3_max, S_IRUGO|S_IWUSR,
+ show_in_max, set_in_max, 3);
+static SENSOR_DEVICE_ATTR(in3_min, S_IRUGO|S_IWUSR,
+ show_in_min, set_in_min, 3);
+static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, show_temp11, NULL, 0);
+static SENSOR_DEVICE_ATTR(temp1_max_hyst, S_IRUGO|S_IWUSR,
+ show_temp_max_hyst, set_temp_max_hyst, 0);
+static SENSOR_DEVICE_ATTR(temp1_max, S_IRUGO|S_IWUSR,
+ show_temp_max, set_temp_max, 0);
+static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, show_temp11, NULL, 1);
+static SENSOR_DEVICE_ATTR(temp2_max_hyst, S_IRUGO|S_IWUSR,
+ show_temp_max_hyst, set_temp_max_hyst, 1);
+static SENSOR_DEVICE_ATTR(temp2_max, S_IRUGO|S_IWUSR,
+ show_temp_max, set_temp_max, 1);
+static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, show_fan, NULL, 0);
+static SENSOR_DEVICE_ATTR(fan1_max, S_IRUGO, show_fan_max, NULL, 0);
+static SENSOR_DEVICE_ATTR(fan1_min, S_IRUGO|S_IWUSR,
+ show_fan_min, set_fan_min, 0);
+static SENSOR_DEVICE_ATTR(fan1_target, S_IRUGO|S_IWUSR,
+ show_fan_target, set_fan_target, 0);
+static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, show_fan, NULL, 1);
+static SENSOR_DEVICE_ATTR(fan2_max, S_IRUGO, show_fan_max, NULL, 1);
+static SENSOR_DEVICE_ATTR(fan2_min, S_IRUGO|S_IWUSR,
+ show_fan_min, set_fan_min, 1);
+static SENSOR_DEVICE_ATTR(fan2_target, S_IRUGO|S_IWUSR,
+ show_fan_target, set_fan_target, 1);
+static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO|S_IWUSR,
+ show_pwm, set_pwm, 0);
+static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO|S_IWUSR,
+ show_pwm_enable, set_pwm_enable, 0);
+static SENSOR_DEVICE_ATTR(pwm1_mode, S_IRUGO,
+ show_pwm_mode, set_pwm_mode, 0);
+static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR,
+ show_pwm, set_pwm, 1);
+static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO|S_IWUSR,
+ show_pwm_enable, set_pwm_enable, 1);
+static SENSOR_DEVICE_ATTR(pwm2_mode, S_IRUGO,
+ show_pwm_mode, set_pwm_mode, 1);
+
+static struct attribute *f75375_attributes[] = {
+ &sensor_dev_attr_temp1_input.dev_attr.attr,
+ &sensor_dev_attr_temp1_max.dev_attr.attr,
+ &sensor_dev_attr_temp1_max_hyst.dev_attr.attr,
+ &sensor_dev_attr_temp2_input.dev_attr.attr,
+ &sensor_dev_attr_temp2_max.dev_attr.attr,
+ &sensor_dev_attr_temp2_max_hyst.dev_attr.attr,
+ &sensor_dev_attr_fan1_input.dev_attr.attr,
+ &sensor_dev_attr_fan1_max.dev_attr.attr,
+ &sensor_dev_attr_fan1_min.dev_attr.attr,
+ &sensor_dev_attr_fan1_target.dev_attr.attr,
+ &sensor_dev_attr_fan2_input.dev_attr.attr,
+ &sensor_dev_attr_fan2_max.dev_attr.attr,
+ &sensor_dev_attr_fan2_min.dev_attr.attr,
+ &sensor_dev_attr_fan2_target.dev_attr.attr,
+ &sensor_dev_attr_pwm1.dev_attr.attr,
+ &sensor_dev_attr_pwm1_enable.dev_attr.attr,
+ &sensor_dev_attr_pwm1_mode.dev_attr.attr,
+ &sensor_dev_attr_pwm2.dev_attr.attr,
+ &sensor_dev_attr_pwm2_enable.dev_attr.attr,
+ &sensor_dev_attr_pwm2_mode.dev_attr.attr,
+ &sensor_dev_attr_in0_input.dev_attr.attr,
+ &sensor_dev_attr_in0_max.dev_attr.attr,
+ &sensor_dev_attr_in0_min.dev_attr.attr,
+ &sensor_dev_attr_in1_input.dev_attr.attr,
+ &sensor_dev_attr_in1_max.dev_attr.attr,
+ &sensor_dev_attr_in1_min.dev_attr.attr,
+ &sensor_dev_attr_in2_input.dev_attr.attr,
+ &sensor_dev_attr_in2_max.dev_attr.attr,
+ &sensor_dev_attr_in2_min.dev_attr.attr,
+ &sensor_dev_attr_in3_input.dev_attr.attr,
+ &sensor_dev_attr_in3_max.dev_attr.attr,
+ &sensor_dev_attr_in3_min.dev_attr.attr,
+ NULL
+};
+
+static const struct attribute_group f75375_group = {
+ .attrs = f75375_attributes,
+};
+
+static void f75375_init(struct i2c_client *client, struct f75375_data *data,
+ struct f75375s_platform_data *f75375s_pdata)
+{
+ int nr;
+
+ if (!f75375s_pdata) {
+ u8 conf, mode;
+ int nr;
+
+ conf = f75375_read8(client, F75375_REG_CONFIG1);
+ mode = f75375_read8(client, F75375_REG_FAN_TIMER);
+ for (nr = 0; nr < 2; nr++) {
+ if (data->kind == f75387) {
+ bool manu, duty;
+
+ if (!(mode & (1 << F75387_FAN_CTRL_LINEAR(nr))))
+ data->pwm_mode[nr] = 1;
+
+ manu = ((mode >> F75387_FAN_MANU_MODE(nr)) & 1);
+ duty = ((mode >> F75387_FAN_DUTY_MODE(nr)) & 1);
+ if (!manu && duty)
+ /* auto, pwm */
+ data->pwm_enable[nr] = 4;
+ else if (manu && !duty)
+ /* manual, speed */
+ data->pwm_enable[nr] = 3;
+ else if (!manu && !duty)
+ /* automatic, speed */
+ data->pwm_enable[nr] = 2;
+ else
+ /* manual, pwm */
+ data->pwm_enable[nr] = 1;
+ } else {
+ if (!(conf & (1 << F75375_FAN_CTRL_LINEAR(nr))))
+ data->pwm_mode[nr] = 1;
+
+ switch ((mode >> FAN_CTRL_MODE(nr)) & 3) {
+ case 0: /* speed */
+ data->pwm_enable[nr] = 3;
+ break;
+ case 1: /* automatic */
+ data->pwm_enable[nr] = 2;
+ break;
+ default: /* manual */
+ data->pwm_enable[nr] = 1;
+ break;
+ }
+ }
+ }
+ return;
+ }
+
+ set_pwm_enable_direct(client, 0, f75375s_pdata->pwm_enable[0]);
+ set_pwm_enable_direct(client, 1, f75375s_pdata->pwm_enable[1]);
+ for (nr = 0; nr < 2; nr++) {
+ if (auto_mode_enabled(f75375s_pdata->pwm_enable[nr]) ||
+ !duty_mode_enabled(f75375s_pdata->pwm_enable[nr]))
+ continue;
+ data->pwm[nr] = clamp_val(f75375s_pdata->pwm[nr], 0, 255);
+ f75375_write_pwm(client, nr);
+ }
+
+}
+
+static int f75375_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ struct f75375_data *data;
+ struct f75375s_platform_data *f75375s_pdata =
+ dev_get_platdata(&client->dev);
+ int err;
+
+ if (!i2c_check_functionality(client->adapter,
+ I2C_FUNC_SMBUS_BYTE_DATA))
+ return -EIO;
+ data = devm_kzalloc(&client->dev, sizeof(struct f75375_data),
+ GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ i2c_set_clientdata(client, data);
+ mutex_init(&data->update_lock);
+ data->kind = id->driver_data;
+
+ err = sysfs_create_group(&client->dev.kobj, &f75375_group);
+ if (err)
+ return err;
+
+ if (data->kind != f75373) {
+ err = sysfs_chmod_file(&client->dev.kobj,
+ &sensor_dev_attr_pwm1_mode.dev_attr.attr,
+ S_IRUGO | S_IWUSR);
+ if (err)
+ goto exit_remove;
+ err = sysfs_chmod_file(&client->dev.kobj,
+ &sensor_dev_attr_pwm2_mode.dev_attr.attr,
+ S_IRUGO | S_IWUSR);
+ if (err)
+ goto exit_remove;
+ }
+
+ data->hwmon_dev = hwmon_device_register(&client->dev);
+ if (IS_ERR(data->hwmon_dev)) {
+ err = PTR_ERR(data->hwmon_dev);
+ goto exit_remove;
+ }
+
+ f75375_init(client, data, f75375s_pdata);
+
+ return 0;
+
+exit_remove:
+ sysfs_remove_group(&client->dev.kobj, &f75375_group);
+ return err;
+}
+
+static int f75375_remove(struct i2c_client *client)
+{
+ struct f75375_data *data = i2c_get_clientdata(client);
+ hwmon_device_unregister(data->hwmon_dev);
+ sysfs_remove_group(&client->dev.kobj, &f75375_group);
+ return 0;
+}
+
+/* Return 0 if detection is successful, -ENODEV otherwise */
+static int f75375_detect(struct i2c_client *client,
+ struct i2c_board_info *info)
+{
+ struct i2c_adapter *adapter = client->adapter;
+ u16 vendid, chipid;
+ u8 version;
+ const char *name;
+
+ vendid = f75375_read16(client, F75375_REG_VENDOR);
+ chipid = f75375_read16(client, F75375_CHIP_ID);
+ if (vendid != 0x1934)
+ return -ENODEV;
+
+ if (chipid == 0x0306)
+ name = "f75375";
+ else if (chipid == 0x0204)
+ name = "f75373";
+ else if (chipid == 0x0410)
+ name = "f75387";
+ else
+ return -ENODEV;
+
+ version = f75375_read8(client, F75375_REG_VERSION);
+ dev_info(&adapter->dev, "found %s version: %02X\n", name, version);
+ strlcpy(info->type, name, I2C_NAME_SIZE);
+
+ return 0;
+}
+
+module_i2c_driver(f75375_driver);
+
+MODULE_AUTHOR("Riku Voipio");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("F75373/F75375/F75387 hardware monitoring driver");
Code Review / kvmfornfv.git / blobdiff