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Diffstat (limited to 'drivers/hwmon/w83793.c')
| -rw-r--r-- | drivers/hwmon/w83793.c | 1609 |
1 files changed, 1609 insertions, 0 deletions
diff --git a/drivers/hwmon/w83793.c b/drivers/hwmon/w83793.c new file mode 100644 index 000000000000..c12ac5abc2bb --- /dev/null +++ b/drivers/hwmon/w83793.c @@ -0,0 +1,1609 @@ +/* + w83793.c - Linux kernel driver for hardware monitoring + Copyright (C) 2006 Winbond Electronics Corp. + Yuan Mu + Rudolf Marek <r.marek@assembler.cz> + + 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 - version 2. + + 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., 51 Franklin Street, Fifth Floor, Boston, MA + 02110-1301 USA. +*/ + +/* + Supports following chips: + + Chip #vin #fanin #pwm #temp wchipid vendid i2c ISA + w83793 10 12 8 6 0x7b 0x5ca3 yes no +*/ + +#include <linux/module.h> +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/i2c.h> +#include <linux/hwmon.h> +#include <linux/hwmon-vid.h> +#include <linux/hwmon-sysfs.h> +#include <linux/err.h> +#include <linux/mutex.h> + +/* Addresses to scan */ +static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, 0x2f, I2C_CLIENT_END }; + +/* Insmod parameters */ +I2C_CLIENT_INSMOD_1(w83793); +I2C_CLIENT_MODULE_PARM(force_subclients, "List of subclient addresses: " + "{bus, clientaddr, subclientaddr1, subclientaddr2}"); + +static int reset; +module_param(reset, bool, 0); +MODULE_PARM_DESC(reset, "Set to 1 to reset chip, not recommended"); + +/* + Address 0x00, 0x0d, 0x0e, 0x0f in all three banks are reserved + as ID, Bank Select registers +*/ +#define W83793_REG_BANKSEL 0x00 +#define W83793_REG_VENDORID 0x0d +#define W83793_REG_CHIPID 0x0e +#define W83793_REG_DEVICEID 0x0f + +#define W83793_REG_CONFIG 0x40 +#define W83793_REG_MFC 0x58 +#define W83793_REG_FANIN_CTRL 0x5c +#define W83793_REG_FANIN_SEL 0x5d +#define W83793_REG_I2C_ADDR 0x0b +#define W83793_REG_I2C_SUBADDR 0x0c +#define W83793_REG_VID_INA 0x05 +#define W83793_REG_VID_INB 0x06 +#define W83793_REG_VID_LATCHA 0x07 +#define W83793_REG_VID_LATCHB 0x08 +#define W83793_REG_VID_CTRL 0x59 + +static u16 W83793_REG_TEMP_MODE[2] = { 0x5e, 0x5f }; + +#define TEMP_READ 0 +#define TEMP_CRIT 1 +#define TEMP_CRIT_HYST 2 +#define TEMP_WARN 3 +#define TEMP_WARN_HYST 4 +/* only crit and crit_hyst affect real-time alarm status + current crit crit_hyst warn warn_hyst */ +static u16 W83793_REG_TEMP[][5] = { + {0x1c, 0x78, 0x79, 0x7a, 0x7b}, + {0x1d, 0x7c, 0x7d, 0x7e, 0x7f}, + {0x1e, 0x80, 0x81, 0x82, 0x83}, + {0x1f, 0x84, 0x85, 0x86, 0x87}, + {0x20, 0x88, 0x89, 0x8a, 0x8b}, + {0x21, 0x8c, 0x8d, 0x8e, 0x8f}, +}; + +#define W83793_REG_TEMP_LOW_BITS 0x22 + +#define W83793_REG_BEEP(index) (0x53 + (index)) +#define W83793_REG_ALARM(index) (0x4b + (index)) + +#define W83793_REG_CLR_CHASSIS 0x4a /* SMI MASK4 */ +#define W83793_REG_IRQ_CTRL 0x50 +#define W83793_REG_OVT_CTRL 0x51 +#define W83793_REG_OVT_BEEP 0x52 + +#define IN_READ 0 +#define IN_MAX 1 +#define IN_LOW 2 +static const u16 W83793_REG_IN[][3] = { + /* Current, High, Low */ + {0x10, 0x60, 0x61}, /* Vcore A */ + {0x11, 0x62, 0x63}, /* Vcore B */ + {0x12, 0x64, 0x65}, /* Vtt */ + {0x14, 0x6a, 0x6b}, /* VSEN1 */ + {0x15, 0x6c, 0x6d}, /* VSEN2 */ + {0x16, 0x6e, 0x6f}, /* +3VSEN */ + {0x17, 0x70, 0x71}, /* +12VSEN */ + {0x18, 0x72, 0x73}, /* 5VDD */ + {0x19, 0x74, 0x75}, /* 5VSB */ + {0x1a, 0x76, 0x77}, /* VBAT */ +}; + +/* Low Bits of Vcore A/B Vtt Read/High/Low */ +static const u16 W83793_REG_IN_LOW_BITS[] = { 0x1b, 0x68, 0x69 }; +static u8 scale_in[] = { 2, 2, 2, 16, 16, 16, 8, 24, 24, 16 }; + +#define W83793_REG_FAN(index) (0x23 + 2 * (index)) /* High byte */ +#define W83793_REG_FAN_MIN(index) (0x90 + 2 * (index)) /* High byte */ + +#define W83793_REG_PWM_DEFAULT 0xb2 +#define W83793_REG_PWM_ENABLE 0x207 +#define W83793_REG_PWM_UPTIME 0xc3 /* Unit in 0.1 second */ +#define W83793_REG_PWM_DOWNTIME 0xc4 /* Unit in 0.1 second */ +#define W83793_REG_TEMP_CRITICAL 0xc5 + +#define PWM_DUTY 0 +#define PWM_START 1 +#define PWM_NONSTOP 2 +#define W83793_REG_PWM(index, nr) (((nr) == 0 ? 0xb3 : \ + (nr) == 1 ? 0x220 : 0x218) + (index)) + +/* bit field, fan1 is bit0, fan2 is bit1 ... */ +#define W83793_REG_TEMP_FAN_MAP(index) (0x201 + (index)) +#define W83793_REG_TEMP_TOL(index) (0x208 + (index)) +#define W83793_REG_TEMP_CRUISE(index) (0x210 + (index)) +#define W83793_REG_PWM_STOP_TIME(index) (0x228 + (index)) +#define W83793_REG_SF2_TEMP(index, nr) (0x230 + ((index) << 4) + (nr)) +#define W83793_REG_SF2_PWM(index, nr) (0x238 + ((index) << 4) + (nr)) + +static inline unsigned long FAN_FROM_REG(u16 val) +{ + if ((val >= 0xfff) || (val == 0)) + return 0; + return (1350000UL / val); +} + +static inline u16 FAN_TO_REG(long rpm) +{ + if (rpm <= 0) + return 0x0fff; + return SENSORS_LIMIT((1350000 + (rpm >> 1)) / rpm, 1, 0xffe); +} + +static inline unsigned long TIME_FROM_REG(u8 reg) +{ + return (reg * 100); +} + +static inline u8 TIME_TO_REG(unsigned long val) +{ + return SENSORS_LIMIT((val + 50) / 100, 0, 0xff); +} + +static inline long TEMP_FROM_REG(s8 reg) +{ + return (reg * 1000); +} + +static inline s8 TEMP_TO_REG(long val, s8 min, s8 max) +{ + return SENSORS_LIMIT((val + (val < 0 ? -500 : 500)) / 1000, min, max); +} + +struct w83793_data { + struct i2c_client client; + struct i2c_client *lm75[2]; + struct class_device *class_dev; + struct mutex update_lock; + char valid; /* !=0 if following fields are valid */ + unsigned long last_updated; /* In jiffies */ + unsigned long last_nonvolatile; /* In jiffies, last time we update the + nonvolatile registers */ + + u8 bank; + u8 vrm; + u8 vid[2]; + u8 in[10][3]; /* Register value, read/high/low */ + u8 in_low_bits[3]; /* Additional resolution for VCore A/B Vtt */ + + u16 has_fan; /* Only fan1- fan5 has own pins */ + u16 fan[12]; /* Register value combine */ + u16 fan_min[12]; /* Register value combine */ + + s8 temp[6][5]; /* current, crit, crit_hyst,warn, warn_hyst */ + u8 temp_low_bits; /* Additional resolution TD1-TD4 */ + u8 temp_mode[2]; /* byte 0: Temp D1-D4 mode each has 2 bits + byte 1: Temp R1,R2 mode, each has 1 bit */ + u8 temp_critical; /* If reached all fan will be at full speed */ + u8 temp_fan_map[6]; /* Temp controls which pwm fan, bit field */ + + u8 has_pwm; + u8 pwm_enable; /* Register value, each Temp has 1 bit */ + u8 pwm_uptime; /* Register value */ + u8 pwm_downtime; /* Register value */ + u8 pwm_default; /* All fan default pwm, next poweron valid */ + u8 pwm[8][3]; /* Register value */ + u8 pwm_stop_time[8]; + u8 temp_cruise[6]; + + u8 alarms[5]; /* realtime status registers */ + u8 beeps[5]; + u8 beep_enable; + u8 tolerance[3]; /* Temp tolerance(Smart Fan I/II) */ + u8 sf2_pwm[6][7]; /* Smart FanII: Fan duty cycle */ + u8 sf2_temp[6][7]; /* Smart FanII: Temp level point */ +}; + +static u8 w83793_read_value(struct i2c_client *client, u16 reg); +static int w83793_write_value(struct i2c_client *client, u16 reg, u8 value); +static int w83793_attach_adapter(struct i2c_adapter *adapter); +static int w83793_detect(struct i2c_adapter *adapter, int address, int kind); +static int w83793_detach_client(struct i2c_client *client); +static void w83793_init_client(struct i2c_client *client); +static void w83793_update_nonvolatile(struct device *dev); +static struct w83793_data *w83793_update_device(struct device *dev); + +static struct i2c_driver w83793_driver = { + .driver = { + .name = "w83793", + }, + .attach_adapter = w83793_attach_adapter, + .detach_client = w83793_detach_client, +}; + +static ssize_t +show_vrm(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct i2c_client *client = to_i2c_client(dev); + struct w83793_data *data = i2c_get_clientdata(client); + + return sprintf(buf, "%d\n", data->vrm); +} + +static ssize_t +show_vid(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct w83793_data *data = w83793_update_device(dev); + struct sensor_device_attribute_2 *sensor_attr = + to_sensor_dev_attr_2(attr); + int index = sensor_attr->index; + + return sprintf(buf, "%d\n", vid_from_reg(data->vid[index], data->vrm)); +} + +static ssize_t +store_vrm(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct i2c_client *client = to_i2c_client(dev); + struct w83793_data *data = i2c_get_clientdata(client); + + data->vrm = simple_strtoul(buf, NULL, 10); + return count; +} + +#define ALARM_STATUS 0 +#define BEEP_ENABLE 1 +static ssize_t +show_alarm_beep(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct w83793_data *data = w83793_update_device(dev); + struct sensor_device_attribute_2 *sensor_attr = + to_sensor_dev_attr_2(attr); + int nr = sensor_attr->nr; + int index = sensor_attr->index >> 3; + int bit = sensor_attr->index & 0x07; + u8 val; + + if (ALARM_STATUS == nr) { + val = (data->alarms[index] >> (bit)) & 1; + } else { /* BEEP_ENABLE */ + val = (data->beeps[index] >> (bit)) & 1; + } + + return sprintf(buf, "%u\n", val); +} + +static ssize_t +store_beep(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct i2c_client *client = to_i2c_client(dev); + struct w83793_data *data = i2c_get_clientdata(client); + struct sensor_device_attribute_2 *sensor_attr = + to_sensor_dev_attr_2(attr); + int index = sensor_attr->index >> 3; + int shift = sensor_attr->index & 0x07; + u8 beep_bit = 1 << shift; + u8 val; + + val = simple_strtoul(buf, NULL, 10); + if (val != 0 && val != 1) + return -EINVAL; + + mutex_lock(&data->update_lock); + data->beeps[index] = w83793_read_value(client, W83793_REG_BEEP(index)); + data->beeps[index] &= ~beep_bit; + data->beeps[index] |= val << shift; + w83793_write_value(client, W83793_REG_BEEP(index), data->beeps[index]); + mutex_unlock(&data->update_lock); + + return count; +} + +static ssize_t +show_beep_enable(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct w83793_data *data = w83793_update_device(dev); + return sprintf(buf, "%u\n", (data->beep_enable >> 1) & 0x01); +} + +static ssize_t +store_beep_enable(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct i2c_client *client = to_i2c_client(dev); + struct w83793_data *data = i2c_get_clientdata(client); + u8 val = simple_strtoul(buf, NULL, 10); + + if (val != 0 && val != 1) + return -EINVAL; + + mutex_lock(&data->update_lock); + data->beep_enable = w83793_read_value(client, W83793_REG_OVT_BEEP) + & 0xfd; + data->beep_enable |= val << 1; + w83793_write_value(client, W83793_REG_OVT_BEEP, data->beep_enable); + mutex_unlock(&data->update_lock); + + return count; +} + +/* Write any value to clear chassis alarm */ +static ssize_t +store_chassis_clear(struct device *dev, + struct device_attribute *attr, const char *buf, + size_t count) +{ + struct i2c_client *client = to_i2c_client(dev); + struct w83793_data *data = i2c_get_clientdata(client); + u8 val; + + mutex_lock(&data->update_lock); + val = w83793_read_value(client, W83793_REG_CLR_CHASSIS); + val |= 0x80; + w83793_write_value(client, W83793_REG_CLR_CHASSIS, val); + mutex_unlock(&data->update_lock); + return count; +} + +#define FAN_INPUT 0 +#define FAN_MIN 1 +static ssize_t +show_fan(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct sensor_device_attribute_2 *sensor_attr = + to_sensor_dev_attr_2(attr); + int nr = sensor_attr->nr; + int index = sensor_attr->index; + struct w83793_data *data = w83793_update_device(dev); + u16 val; + + if (FAN_INPUT == nr) { + val = data->fan[index] & 0x0fff; + } else { + val = data->fan_min[index] & 0x0fff; + } + + return sprintf(buf, "%lu\n", FAN_FROM_REG(val)); +} + +static ssize_t +store_fan_min(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct sensor_device_attribute_2 *sensor_attr = + to_sensor_dev_attr_2(attr); + int index = sensor_attr->index; + struct i2c_client *client = to_i2c_client(dev); + struct w83793_data *data = i2c_get_clientdata(client); + u16 val = FAN_TO_REG(simple_strtoul(buf, NULL, 10)); + + mutex_lock(&data->update_lock); + data->fan_min[index] = val; + w83793_write_value(client, W83793_REG_FAN_MIN(index), + (val >> 8) & 0xff); + w83793_write_value(client, W83793_REG_FAN_MIN(index) + 1, val & 0xff); + mutex_unlock(&data->update_lock); + + return count; +} + +#define PWM_DUTY 0 +#define PWM_START 1 +#define PWM_NONSTOP 2 +#define PWM_STOP_TIME 3 +static ssize_t +show_pwm(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct sensor_device_attribute_2 *sensor_attr = + to_sensor_dev_attr_2(attr); + struct w83793_data *data = w83793_update_device(dev); + u16 val; + int nr = sensor_attr->nr; + int index = sensor_attr->index; + + if (PWM_STOP_TIME == nr) + val = TIME_FROM_REG(data->pwm_stop_time[index]); + else + val = (data->pwm[index][nr] & 0x3f) << 2; + + return sprintf(buf, "%d\n", val); +} + +static ssize_t +store_pwm(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct i2c_client *client = to_i2c_client(dev); + struct w83793_data *data = i2c_get_clientdata(client); + struct sensor_device_attribute_2 *sensor_attr = + to_sensor_dev_attr_2(attr); + int nr = sensor_attr->nr; + int index = sensor_attr->index; + u8 val; + + mutex_lock(&data->update_lock); + if (PWM_STOP_TIME == nr) { + val = TIME_TO_REG(simple_strtoul(buf, NULL, 10)); + data->pwm_stop_time[index] = val; + w83793_write_value(client, W83793_REG_PWM_STOP_TIME(index), + val); + } else { + val = SENSORS_LIMIT(simple_strtoul(buf, NULL, 10), 0, 0xff) + >> 2; + data->pwm[index][nr] = + w83793_read_value(client, W83793_REG_PWM(index, nr)) & 0xc0; + data->pwm[index][nr] |= val; + w83793_write_value(client, W83793_REG_PWM(index, nr), + data->pwm[index][nr]); + } + + mutex_unlock(&data->update_lock); + return count; +} + +static ssize_t +show_temp(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct sensor_device_attribute_2 *sensor_attr = + to_sensor_dev_attr_2(attr); + int nr = sensor_attr->nr; + int index = sensor_attr->index; + struct w83793_data *data = w83793_update_device(dev); + long temp = TEMP_FROM_REG(data->temp[index][nr]); + + if (TEMP_READ == nr && index < 4) { /* Only TD1-TD4 have low bits */ + int low = ((data->temp_low_bits >> (index * 2)) & 0x03) * 250; + temp += temp > 0 ? low : -low; + } + return sprintf(buf, "%ld\n", temp); +} + +static ssize_t +store_temp(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct sensor_device_attribute_2 *sensor_attr = + to_sensor_dev_attr_2(attr); + int nr = sensor_attr->nr; + int index = sensor_attr->index; + struct i2c_client *client = to_i2c_client(dev); + struct w83793_data *data = i2c_get_clientdata(client); + long tmp = simple_strtol(buf, NULL, 10); + + mutex_lock(&data->update_lock); + data->temp[index][nr] = TEMP_TO_REG(tmp, -128, 127); + w83793_write_value(client, W83793_REG_TEMP[index][nr], + data->temp[index][nr]); + mutex_unlock(&data->update_lock); + return count; +} + +/* + TD1-TD4 + each has 4 mode:(2 bits) + 0: Stop monitor + 1: Use internal temp sensor(default) + 2: Use sensor in AMD CPU and get result by AMDSI + 3: Use sensor in Intel CPU and get result by PECI + + TR1-TR2 + each has 2 mode:(1 bit) + 0: Disable temp sensor monitor + 1: To enable temp sensors monitor +*/ + +/* 0 disable, 5 AMDSI, 6 PECI */ +static u8 TO_TEMP_MODE[] = { 0, 0, 5, 6 }; + +static ssize_t +show_temp_mode(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct w83793_data *data = w83793_update_device(dev); + struct sensor_device_attribute_2 *sensor_attr = + to_sensor_dev_attr_2(attr); + int index = sensor_attr->index; + u8 mask = (index < 4) ? 0x03 : 0x01; + u8 shift = (index < 4) ? (2 * index) : (index - 4); + u8 tmp; + index = (index < 4) ? 0 : 1; + + tmp = (data->temp_mode[index] >> shift) & mask; + + /* for the internal sensor, found out if diode or thermistor */ + if (tmp == 1) { + tmp = index == 0 ? 3 : 4; + } else { + tmp = TO_TEMP_MODE[tmp]; + } + + return sprintf(buf, "%d\n", tmp); +} + +static ssize_t +store_temp_mode(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct i2c_client *client = to_i2c_client(dev); + struct w83793_data *data = i2c_get_clientdata(client); + struct sensor_device_attribute_2 *sensor_attr = + to_sensor_dev_attr_2(attr); + int index = sensor_attr->index; + u8 mask = (index < 4) ? 0x03 : 0x01; + u8 shift = (index < 4) ? (2 * index) : (index - 4); + u8 val = simple_strtoul(buf, NULL, 10); + + /* transform the sysfs interface values into table above */ + if ((val == 5 || val == 6) && (index < 4)) { + val -= 3; + } else if ((val == 3 && index < 4) + || (val == 4 && index >= 4) + || val == 0) { + /* transform diode or thermistor into internal enable */ + val = !!val; + } else { + return -EINVAL; + } + + index = (index < 4) ? 0 : 1; + mutex_lock(&data->update_lock); + data->temp_mode[index] = + w83793_read_value(client, W83793_REG_TEMP_MODE[index]); + data->temp_mode[index] &= ~(mask << shift); + data->temp_mode[index] |= val << shift; + w83793_write_value(client, W83793_REG_TEMP_MODE[index], + data->temp_mode[index]); + mutex_unlock(&data->update_lock); + + return count; +} + +#define SETUP_PWM_DEFAULT 0 +#define SETUP_PWM_UPTIME 1 /* Unit in 0.1s */ +#define SETUP_PWM_DOWNTIME 2 /* Unit in 0.1s */ +#define SETUP_TEMP_CRITICAL 3 +static ssize_t +show_sf_setup(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct sensor_device_attribute_2 *sensor_attr = + to_sensor_dev_attr_2(attr); + int nr = sensor_attr->nr; + struct w83793_data *data = w83793_update_device(dev); + u32 val = 0; + + if (SETUP_PWM_DEFAULT == nr) { + val = (data->pwm_default & 0x3f) << 2; + } else if (SETUP_PWM_UPTIME == nr) { + val = TIME_FROM_REG(data->pwm_uptime); + } else if (SETUP_PWM_DOWNTIME == nr) { + val = TIME_FROM_REG(data->pwm_downtime); + } else if (SETUP_TEMP_CRITICAL == nr) { + val = TEMP_FROM_REG(data->temp_critical & 0x7f); + } + + return sprintf(buf, "%d\n", val); +} + +static ssize_t +store_sf_setup(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct sensor_device_attribute_2 *sensor_attr = + to_sensor_dev_attr_2(attr); + int nr = sensor_attr->nr; + struct i2c_client *client = to_i2c_client(dev); + struct w83793_data *data = i2c_get_clientdata(client); + + mutex_lock(&data->update_lock); + if (SETUP_PWM_DEFAULT == nr) { + data->pwm_default = + w83793_read_value(client, W83793_REG_PWM_DEFAULT) & 0xc0; + data->pwm_default |= SENSORS_LIMIT(simple_strtoul(buf, NULL, + 10), + 0, 0xff) >> 2; + w83793_write_value(client, W83793_REG_PWM_DEFAULT, + data->pwm_default); + } else if (SETUP_PWM_UPTIME == nr) { + data->pwm_uptime = TIME_TO_REG(simple_strtoul(buf, NULL, 10)); + data->pwm_uptime += data->pwm_uptime == 0 ? 1 : 0; + w83793_write_value(client, W83793_REG_PWM_UPTIME, + data->pwm_uptime); + } else if (SETUP_PWM_DOWNTIME == nr) { + data->pwm_downtime = TIME_TO_REG(simple_strtoul(buf, NULL, 10)); + data->pwm_downtime += data->pwm_downtime == 0 ? 1 : 0; + w83793_write_value(client, W83793_REG_PWM_DOWNTIME, + data->pwm_downtime); + } else { /* SETUP_TEMP_CRITICAL */ + data->temp_critical = + w83793_read_value(client, W83793_REG_TEMP_CRITICAL) & 0x80; + data->temp_critical |= TEMP_TO_REG(simple_strtol(buf, NULL, 10), + 0, 0x7f); + w83793_write_value(client, W83793_REG_TEMP_CRITICAL, + data->temp_critical); + } + + mutex_unlock(&data->update_lock); + return count; +} + +/* + Temp SmartFan control + TEMP_FAN_MAP + Temp channel control which pwm fan, bitfield, bit 0 indicate pwm1... + It's possible two or more temp channels control the same fan, w83793 + always prefers to pick the most critical request and applies it to + the related Fan. + It's possible one fan is not in any mapping of 6 temp channels, this + means the fan is manual mode + + TEMP_PWM_ENABLE + Each temp channel has its own SmartFan mode, and temp channel + control fans that are set by TEMP_FAN_MAP + 0: SmartFanII mode + 1: Thermal Cruise Mode + + TEMP_CRUISE + Target temperature in thermal cruise mode, w83793 will try to turn + fan speed to keep the temperature of target device around this + temperature. + + TEMP_TOLERANCE + If Temp higher or lower than target with this tolerance, w83793 + will take actions to speed up or slow down the fan to keep the + temperature within the tolerance range. +*/ + +#define TEMP_FAN_MAP 0 +#define TEMP_PWM_ENABLE 1 +#define TEMP_CRUISE 2 +#define TEMP_TOLERANCE 3 +static ssize_t +show_sf_ctrl(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct sensor_device_attribute_2 *sensor_attr = + to_sensor_dev_attr_2(attr); + int nr = sensor_attr->nr; + int index = sensor_attr->index; + struct w83793_data *data = w83793_update_device(dev); + u32 val; + + if (TEMP_FAN_MAP == nr) { + val = data->temp_fan_map[index]; + } else if (TEMP_PWM_ENABLE == nr) { + /* +2 to transfrom into 2 and 3 to conform with sysfs intf */ + val = ((data->pwm_enable >> index) & 0x01) + 2; + } else if (TEMP_CRUISE == nr) { + val = TEMP_FROM_REG(data->temp_cruise[index] & 0x7f); + } else { /* TEMP_TOLERANCE */ + val = data->tolerance[index >> 1] >> ((index & 0x01) ? 4 : 0); + val = TEMP_FROM_REG(val & 0x0f); + } + return sprintf(buf, "%d\n", val); +} + +static ssize_t +store_sf_ctrl(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct sensor_device_attribute_2 *sensor_attr = + to_sensor_dev_attr_2(attr); + int nr = sensor_attr->nr; + int index = sensor_attr->index; + struct i2c_client *client = to_i2c_client(dev); + struct w83793_data *data = i2c_get_clientdata(client); + u32 val; + + mutex_lock(&data->update_lock); + if (TEMP_FAN_MAP == nr) { + val = simple_strtoul(buf, NULL, 10) & 0xff; + w83793_write_value(client, W83793_REG_TEMP_FAN_MAP(index), val); + data->temp_fan_map[index] = val; + } else if (TEMP_PWM_ENABLE == nr) { + val = simple_strtoul(buf, NULL, 10); + if (2 == val || 3 == val) { + data->pwm_enable = + w83793_read_value(client, W83793_REG_PWM_ENABLE); + if (val - 2) + data->pwm_enable |= 1 << index; + else + data->pwm_enable &= ~(1 << index); + w83793_write_value(client, W83793_REG_PWM_ENABLE, + data->pwm_enable); + } else { + mutex_unlock(&data->update_lock); + return -EINVAL; + } + } else if (TEMP_CRUISE == nr) { + data->temp_cruise[index] = + w83793_read_value(client, W83793_REG_TEMP_CRUISE(index)); + val = TEMP_TO_REG(simple_strtol(buf, NULL, 10), 0, 0x7f); + data->temp_cruise[index] &= 0x80; + data->temp_cruise[index] |= val; + + w83793_write_value(client, W83793_REG_TEMP_CRUISE(index), + data->temp_cruise[index]); + } else { /* TEMP_TOLERANCE */ + int i = index >> 1; + u8 shift = (index & 0x01) ? 4 : 0; + data->tolerance[i] = + w83793_read_value(client, W83793_REG_TEMP_TOL(i)); + + val = TEMP_TO_REG(simple_strtol(buf, NULL, 10), 0, 0x0f); + data->tolerance[i] &= ~(0x0f << shift); + data->tolerance[i] |= val << shift; + w83793_write_value(client, W83793_REG_TEMP_TOL(i), + data->tolerance[i]); + } + + mutex_unlock(&data->update_lock); + return count; +} + +static ssize_t +show_sf2_pwm(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct sensor_device_attribute_2 *sensor_attr = + to_sensor_dev_attr_2(attr); + int nr = sensor_attr->nr; + int index = sensor_attr->index; + struct w83793_data *data = w83793_update_device(dev); + + return sprintf(buf, "%d\n", (data->sf2_pwm[index][nr] & 0x3f) << 2); +} + +static ssize_t +store_sf2_pwm(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct i2c_client *client = to_i2c_client(dev); + struct w83793_data *data = i2c_get_clientdata(client); + struct sensor_device_attribute_2 *sensor_attr = + to_sensor_dev_attr_2(attr); + int nr = sensor_attr->nr; + int index = sensor_attr->index; + u8 val = SENSORS_LIMIT(simple_strtoul(buf, NULL, 10), 0, 0xff) >> 2; + + mutex_lock(&data->update_lock); + data->sf2_pwm[index][nr] = + w83793_read_value(client, W83793_REG_SF2_PWM(index, nr)) & 0xc0; + data->sf2_pwm[index][nr] |= val; + w83793_write_value(client, W83793_REG_SF2_PWM(index, nr), + data->sf2_pwm[index][nr]); + mutex_unlock(&data->update_lock); + return count; +} + +static ssize_t +show_sf2_temp(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct sensor_device_attribute_2 *sensor_attr = + to_sensor_dev_attr_2(attr); + int nr = sensor_attr->nr; + int index = sensor_attr->index; + struct w83793_data *data = w83793_update_device(dev); + + return sprintf(buf, "%ld\n", + TEMP_FROM_REG(data->sf2_temp[index][nr] & 0x7f)); +} + +static ssize_t +store_sf2_temp(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct i2c_client *client = to_i2c_client(dev); + struct w83793_data *data = i2c_get_clientdata(client); + struct sensor_device_attribute_2 *sensor_attr = + to_sensor_dev_attr_2(attr); + int nr = sensor_attr->nr; + int index = sensor_attr->index; + u8 val = TEMP_TO_REG(simple_strtol(buf, NULL, 10), 0, 0x7f); + + mutex_lock(&data->update_lock); + data->sf2_temp[index][nr] = + w83793_read_value(client, W83793_REG_SF2_TEMP(index, nr)) & 0x80; + data->sf2_temp[index][nr] |= val; + w83793_write_value(client, W83793_REG_SF2_TEMP(index, nr), + data->sf2_temp[index][nr]); + mutex_unlock(&data->update_lock); + return count; +} + +/* only Vcore A/B and Vtt have additional 2 bits precision */ +static ssize_t +show_in(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct sensor_device_attribute_2 *sensor_attr = + to_sensor_dev_attr_2(attr); + int nr = sensor_attr->nr; + int index = sensor_attr->index; + struct w83793_data *data = w83793_update_device(dev); + u16 val = data->in[index][nr]; + + if (index < 3) { + val <<= 2; + val += (data->in_low_bits[nr] >> (index * 2)) & 0x3; + } + return sprintf(buf, "%d\n", val * scale_in[index]); +} + +static ssize_t +store_in(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct sensor_device_attribute_2 *sensor_attr = + to_sensor_dev_attr_2(attr); + int nr = sensor_attr->nr; + int index = sensor_attr->index; + struct i2c_client *client = to_i2c_client(dev); + struct w83793_data *data = i2c_get_clientdata(client); + u32 val; + + val = + (simple_strtoul(buf, NULL, 10) + + scale_in[index] / 2) / scale_in[index]; + mutex_lock(&data->update_lock); + if (index > 2) { + val = SENSORS_LIMIT(val, 0, 255); + } else { + val = SENSORS_LIMIT(val, 0, 0x3FF); + data->in_low_bits[nr] = + w83793_read_value(client, W83793_REG_IN_LOW_BITS[nr]); + data->in_low_bits[nr] &= ~(0x03 << (2 * index)); + data->in_low_bits[nr] |= (val & 0x03) << (2 * index); + w83793_write_value(client, W83793_REG_IN_LOW_BITS[nr], + data->in_low_bits[nr]); + val >>= 2; + } + data->in[index][nr] = val; + w83793_write_value(client, W83793_REG_IN[index][nr], + data->in[index][nr]); + mutex_unlock(&data->update_lock); + return count; +} + +#define NOT_USED -1 + +#define SENSOR_ATTR_IN(index) \ + SENSOR_ATTR_2(in##index##_input, S_IRUGO, show_in, NULL, \ + IN_READ, index), \ + SENSOR_ATTR_2(in##index##_max, S_IRUGO | S_IWUSR, show_in, \ + store_in, IN_MAX, index), \ + SENSOR_ATTR_2(in##index##_min, S_IRUGO | S_IWUSR, show_in, \ + store_in, IN_LOW, index), \ + SENSOR_ATTR_2(in##index##_alarm, S_IRUGO, show_alarm_beep, \ + NULL, ALARM_STATUS, index + ((index > 2) ? 1 : 0)), \ + SENSOR_ATTR_2(in##index##_beep, S_IWUSR | S_IRUGO, \ + show_alarm_beep, store_beep, BEEP_ENABLE, \ + index + ((index > 2) ? 1 : 0)) + +#define SENSOR_ATTR_FAN(index) \ + SENSOR_ATTR_2(fan##index##_alarm, S_IRUGO, show_alarm_beep, \ + NULL, ALARM_STATUS, index + 17), \ + SENSOR_ATTR_2(fan##index##_beep, S_IWUSR | S_IRUGO, \ + show_alarm_beep, store_beep, BEEP_ENABLE, index + 17), \ + SENSOR_ATTR_2(fan##index##_input, S_IRUGO, show_fan, \ + NULL, FAN_INPUT, index - 1), \ + SENSOR_ATTR_2(fan##index##_min, S_IWUSR | S_IRUGO, \ + show_fan, store_fan_min, FAN_MIN, index - 1) + +#define SENSOR_ATTR_PWM(index) \ + SENSOR_ATTR_2(pwm##index, S_IWUSR | S_IRUGO, show_pwm, \ + store_pwm, PWM_DUTY, index - 1), \ + SENSOR_ATTR_2(pwm##index##_nonstop, S_IWUSR | S_IRUGO, \ + show_pwm, store_pwm, PWM_NONSTOP, index - 1), \ + SENSOR_ATTR_2(pwm##index##_start, S_IWUSR | S_IRUGO, \ + show_pwm, store_pwm, PWM_START, index - 1), \ + SENSOR_ATTR_2(pwm##index##_stop_time, S_IWUSR | S_IRUGO, \ + show_pwm, store_pwm, PWM_STOP_TIME, index - 1) + +#define SENSOR_ATTR_TEMP(index) \ + SENSOR_ATTR_2(temp##index##_type, S_IRUGO | S_IWUSR, \ + show_temp_mode, store_temp_mode, NOT_USED, index - 1), \ + SENSOR_ATTR_2(temp##index##_input, S_IRUGO, show_temp, \ + NULL, TEMP_READ, index - 1), \ + SENSOR_ATTR_2(temp##index##_max, S_IRUGO | S_IWUSR, show_temp, \ + store_temp, TEMP_CRIT, index - 1), \ + SENSOR_ATTR_2(temp##index##_max_hyst, S_IRUGO | S_IWUSR, \ + show_temp, store_temp, TEMP_CRIT_HYST, index - 1), \ + SENSOR_ATTR_2(temp##index##_warn, S_IRUGO | S_IWUSR, show_temp, \ + store_temp, TEMP_WARN, index - 1), \ + SENSOR_ATTR_2(temp##index##_warn_hyst, S_IRUGO | S_IWUSR, \ + show_temp, store_temp, TEMP_WARN_HYST, index - 1), \ + SENSOR_ATTR_2(temp##index##_alarm, S_IRUGO, \ + show_alarm_beep, NULL, ALARM_STATUS, index + 11), \ + SENSOR_ATTR_2(temp##index##_beep, S_IWUSR | S_IRUGO, \ + show_alarm_beep, store_beep, BEEP_ENABLE, index + 11), \ + SENSOR_ATTR_2(temp##index##_auto_channels_pwm, \ + S_IRUGO | S_IWUSR, show_sf_ctrl, store_sf_ctrl, \ + TEMP_FAN_MAP, index - 1), \ + SENSOR_ATTR_2(temp##index##_pwm_enable, S_IWUSR | S_IRUGO, \ + show_sf_ctrl, store_sf_ctrl, TEMP_PWM_ENABLE, \ + index - 1), \ + SENSOR_ATTR_2(thermal_cruise##index, S_IRUGO | S_IWUSR, \ + show_sf_ctrl, store_sf_ctrl, TEMP_CRUISE, index - 1), \ + SENSOR_ATTR_2(tolerance##index, S_IRUGO | S_IWUSR, show_sf_ctrl,\ + store_sf_ctrl, TEMP_TOLERANCE, index - 1), \ + SENSOR_ATTR_2(temp##index##_auto_point1_pwm, S_IRUGO | S_IWUSR, \ + show_sf2_pwm, store_sf2_pwm, 0, index - 1), \ + SENSOR_ATTR_2(temp##index##_auto_point2_pwm, S_IRUGO | S_IWUSR, \ + show_sf2_pwm, store_sf2_pwm, 1, index - 1), \ + SENSOR_ATTR_2(temp##index##_auto_point3_pwm, S_IRUGO | S_IWUSR, \ + show_sf2_pwm, store_sf2_pwm, 2, index - 1), \ + SENSOR_ATTR_2(temp##index##_auto_point4_pwm, S_IRUGO | S_IWUSR, \ + show_sf2_pwm, store_sf2_pwm, 3, index - 1), \ + SENSOR_ATTR_2(temp##index##_auto_point5_pwm, S_IRUGO | S_IWUSR, \ + show_sf2_pwm, store_sf2_pwm, 4, index - 1), \ + SENSOR_ATTR_2(temp##index##_auto_point6_pwm, S_IRUGO | S_IWUSR, \ + show_sf2_pwm, store_sf2_pwm, 5, index - 1), \ + SENSOR_ATTR_2(temp##index##_auto_point7_pwm, S_IRUGO | S_IWUSR, \ + show_sf2_pwm, store_sf2_pwm, 6, index - 1), \ + SENSOR_ATTR_2(temp##index##_auto_point1_temp, S_IRUGO | S_IWUSR,\ + show_sf2_temp, store_sf2_temp, 0, index - 1), \ + SENSOR_ATTR_2(temp##index##_auto_point2_temp, S_IRUGO | S_IWUSR,\ + show_sf2_temp, store_sf2_temp, 1, index - 1), \ + SENSOR_ATTR_2(temp##index##_auto_point3_temp, S_IRUGO | S_IWUSR,\ + show_sf2_temp, store_sf2_temp, 2, index - 1), \ + SENSOR_ATTR_2(temp##index##_auto_point4_temp, S_IRUGO | S_IWUSR,\ + show_sf2_temp, store_sf2_temp, 3, index - 1), \ + SENSOR_ATTR_2(temp##index##_auto_point5_temp, S_IRUGO | S_IWUSR,\ + show_sf2_temp, store_sf2_temp, 4, index - 1), \ + SENSOR_ATTR_2(temp##index##_auto_point6_temp, S_IRUGO | S_IWUSR,\ + show_sf2_temp, store_sf2_temp, 5, index - 1), \ + SENSOR_ATTR_2(temp##index##_auto_point7_temp, S_IRUGO | S_IWUSR,\ + show_sf2_temp, store_sf2_temp, 6, index - 1) + +static struct sensor_device_attribute_2 w83793_sensor_attr_2[] = { + SENSOR_ATTR_IN(0), + SENSOR_ATTR_IN(1), + SENSOR_ATTR_IN(2), + SENSOR_ATTR_IN(3), + SENSOR_ATTR_IN(4), + SENSOR_ATTR_IN(5), + SENSOR_ATTR_IN(6), + SENSOR_ATTR_IN(7), + SENSOR_ATTR_IN(8), + SENSOR_ATTR_IN(9), + SENSOR_ATTR_TEMP(1), + SENSOR_ATTR_TEMP(2), + SENSOR_ATTR_TEMP(3), + SENSOR_ATTR_TEMP(4), + SENSOR_ATTR_TEMP(5), + SENSOR_ATTR_TEMP(6), + SENSOR_ATTR_FAN(1), + SENSOR_ATTR_FAN(2), + SENSOR_ATTR_FAN(3), + SENSOR_ATTR_FAN(4), + SENSOR_ATTR_FAN(5), + SENSOR_ATTR_PWM(1), + SENSOR_ATTR_PWM(2), + SENSOR_ATTR_PWM(3), +}; + +/* Fan6-Fan12 */ +static struct sensor_device_attribute_2 w83793_left_fan[] = { + SENSOR_ATTR_FAN(6), + SENSOR_ATTR_FAN(7), + SENSOR_ATTR_FAN(8), + SENSOR_ATTR_FAN(9), + SENSOR_ATTR_FAN(10), + SENSOR_ATTR_FAN(11), + SENSOR_ATTR_FAN(12), +}; + +/* Pwm4-Pwm8 */ +static struct sensor_device_attribute_2 w83793_left_pwm[] = { + SENSOR_ATTR_PWM(4), + SENSOR_ATTR_PWM(5), + SENSOR_ATTR_PWM(6), + SENSOR_ATTR_PWM(7), + SENSOR_ATTR_PWM(8), +}; + +static struct sensor_device_attribute_2 sda_single_files[] = { + SENSOR_ATTR_2(cpu0_vid, S_IRUGO, show_vid, NULL, NOT_USED, 0), + SENSOR_ATTR_2(cpu1_vid, S_IRUGO, show_vid, NULL, NOT_USED, 1), + SENSOR_ATTR_2(vrm, S_IWUSR | S_IRUGO, show_vrm, store_vrm, + NOT_USED, NOT_USED), + SENSOR_ATTR_2(chassis, S_IWUSR | S_IRUGO, show_alarm_beep, + store_chassis_clear, ALARM_STATUS, 30), + SENSOR_ATTR_2(beep_enable, S_IWUSR | S_IRUGO, show_beep_enable, + store_beep_enable, NOT_USED, NOT_USED), + SENSOR_ATTR_2(pwm_default, S_IWUSR | S_IRUGO, show_sf_setup, + store_sf_setup, SETUP_PWM_DEFAULT, NOT_USED), + SENSOR_ATTR_2(pwm_uptime, S_IWUSR | S_IRUGO, show_sf_setup, + store_sf_setup, SETUP_PWM_UPTIME, NOT_USED), + SENSOR_ATTR_2(pwm_downtime, S_IWUSR | S_IRUGO, show_sf_setup, + store_sf_setup, SETUP_PWM_DOWNTIME, NOT_USED), + SENSOR_ATTR_2(temp_critical, S_IWUSR | S_IRUGO, show_sf_setup, + store_sf_setup, SETUP_TEMP_CRITICAL, NOT_USED), +}; + +static void w83793_init_client(struct i2c_client *client) +{ + if (reset) { + w83793_write_value(client, W83793_REG_CONFIG, 0x80); + } + + /* Start monitoring */ + w83793_write_value(client, W83793_REG_CONFIG, + w83793_read_value(client, W83793_REG_CONFIG) | 0x01); + +} + +static int w83793_attach_adapter(struct i2c_adapter *adapter) +{ + if (!(adapter->class & I2C_CLASS_HWMON)) + return 0; + return i2c_probe(adapter, &addr_data, w83793_detect); +} + +static int w83793_detach_client(struct i2c_client *client) +{ + struct w83793_data *data = i2c_get_clientdata(client); + struct device *dev = &client->dev; + int err, i; + + /* main client */ + if (data) { + hwmon_device_unregister(data->class_dev); + + for (i = 0; i < ARRAY_SIZE(w83793_sensor_attr_2); i++) + device_remove_file(dev, + &w83793_sensor_attr_2[i].dev_attr); + + for (i = 0; i < ARRAY_SIZE(sda_single_files); i++) + device_remove_file(dev, &sda_single_files[i].dev_attr); + + for (i = 0; i < ARRAY_SIZE(w83793_left_fan); i++) + device_remove_file(dev, &w83793_left_fan[i].dev_attr); + + for (i = 0; i < ARRAY_SIZE(w83793_left_pwm); i++) + device_remove_file(dev, &w83793_left_pwm[i].dev_attr); + } + + if ((err = i2c_detach_client(client))) + return err; + + /* main client */ + if (data) + kfree(data); + /* subclient */ + else + kfree(client); + + return 0; +} + +static int +w83793_create_subclient(struct i2c_adapter *adapter, + struct i2c_client *client, int addr, + struct i2c_client **sub_cli) +{ + int err = 0; + struct i2c_client *sub_client; + + (*sub_cli) = sub_client = + kzalloc(sizeof(struct i2c_client), GFP_KERNEL); + if (!(sub_client)) { + return -ENOMEM; + } + sub_client->addr = 0x48 + addr; + i2c_set_clientdata(sub_client, NULL); + sub_client->adapter = adapter; + sub_client->driver = &w83793_driver; + strlcpy(sub_client->name, "w83793 subclient", I2C_NAME_SIZE); + if ((err = i2c_attach_client(sub_client))) { + dev_err(&client->dev, "subclient registration " + "at address 0x%x failed\n", sub_client->addr); + kfree(sub_client); + } + return err; +} + +static int +w83793_detect_subclients(struct i2c_adapter *adapter, int address, + int kind, struct i2c_client *client) +{ + int i, id, err; + u8 tmp; + struct w83793_data *data = i2c_get_clientdata(client); + + id = i2c_adapter_id(adapter); + if (force_subclients[0] == id && force_subclients[1] == address) { + for (i = 2; i <= 3; i++) { + if (force_subclients[i] < 0x48 + || force_subclients[i] > 0x4f) { + dev_err(&client->dev, + "invalid subclient " + "address %d; must be 0x48-0x4f\n", + force_subclients[i]); + err = -EINVAL; + goto ERROR_SC_0; + } + } + w83793_write_value(client, W83793_REG_I2C_SUBADDR, + (force_subclients[2] & 0x07) | + ((force_subclients[3] & 0x07) << 4)); + } + + tmp = w83793_read_value(client, W83793_REG_I2C_SUBADDR); + if (!(tmp & 0x08)) { + err = + w83793_create_subclient(adapter, client, tmp & 0x7, + &data->lm75[0]); + if (err < 0) + goto ERROR_SC_0; + } + if (!(tmp & 0x80)) { + if ((data->lm75[0] != NULL) + && ((tmp & 0x7) == ((tmp >> 4) & 0x7))) { + dev_err(&client->dev, + "duplicate addresses 0x%x, " + "use force_subclients\n", data->lm75[0]->addr); + err = -ENODEV; + goto ERROR_SC_1; + } + err = w83793_create_subclient(adapter, client, + (tmp >> 4) & 0x7, &data->lm75[1]); + if (err < 0) + goto ERROR_SC_1; + } + + return 0; + + /* Undo inits in case of errors */ + +ERROR_SC_1: + if (data->lm75[0] != NULL) { + i2c_detach_client(data->lm75[0]); + kfree(data->lm75[0]); + } +ERROR_SC_0: + return err; +} + +static int w83793_detect(struct i2c_adapter *adapter, int address, int kind) +{ + int i; + u8 tmp, val; + struct i2c_client *client; + struct device *dev; + struct w83793_data *data; + int files_fan = ARRAY_SIZE(w83793_left_fan) / 7; + int files_pwm = ARRAY_SIZE(w83793_left_pwm) / 5; + int err = 0; + + if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { + goto exit; + } + + /* OK. For now, we presume we have a valid client. We now create the + client structure, even though we cannot fill it completely yet. + But it allows us to access w83793_{read,write}_value. */ + + if (!(data = kzalloc(sizeof(struct w83793_data), GFP_KERNEL))) { + err = -ENOMEM; + goto exit; + } + + client = &data->client; + dev = &client->dev; + i2c_set_clientdata(client, data); + client->addr = address; + client->adapter = adapter; + client->driver = &w83793_driver; + + data->bank = i2c_smbus_read_byte_data(client, W83793_REG_BANKSEL); + + /* Now, we do the remaining detection. */ + if (kind < 0) { + tmp = data->bank & 0x80 ? 0x5c : 0xa3; + /* Check Winbond vendor ID */ + if (tmp != i2c_smbus_read_byte_data(client, + W83793_REG_VENDORID)) { + pr_debug("w83793: Detection failed at check " + "vendor id\n"); + err = -ENODEV; + goto free_mem; + } + + /* If Winbond chip, address of chip and W83793_REG_I2C_ADDR + should match */ + if ((data->bank & 0x07) == 0 + && i2c_smbus_read_byte_data(client, W83793_REG_I2C_ADDR) != + (address << 1)) { + pr_debug("w83793: Detection failed at check " + "i2c addr\n"); + err = -ENODEV; + goto free_mem; + } + + } + + /* We have either had a force parameter, or we have already detected the + Winbond. Determine the chip type now */ + + if (kind <= 0) { + if (0x7b == w83793_read_value(client, W83793_REG_CHIPID)) { + kind = w83793; + } else { + if (kind == 0) + dev_warn(&adapter->dev, "w83793: Ignoring " + "'force' parameter for unknown chip " + "at address 0x%02x\n", address); + err = -ENODEV; + goto free_mem; + } + } + + /* Fill in the remaining client fields and put into the global list */ + strlcpy(client->name, "w83793", I2C_NAME_SIZE); + + mutex_init(&data->update_lock); + + /* Tell the I2C layer a new client has arrived */ + if ((err = i2c_attach_client(client))) + goto free_mem; + + if ((err = w83793_detect_subclients(adapter, address, kind, client))) + goto detach_client; + + /* Initialize the chip */ + w83793_init_client(client); + + data->vrm = vid_which_vrm(); + /* + Only fan 1-5 has their own input pins, + Pwm 1-3 has their own pins + */ + data->has_fan = 0x1f; + data->has_pwm = 0x07; + tmp = w83793_read_value(client, W83793_REG_MFC); + val = w83793_read_value(client, W83793_REG_FANIN_CTRL); + + /* check the function of pins 49-56 */ + if (!(tmp & 0x80)) { + data->has_pwm |= 0x18; /* pwm 4,5 */ + if (val & 0x01) { /* fan 6 */ + data->has_fan |= 0x20; + data->has_pwm |= 0x20; + } + if (val & 0x02) { /* fan 7 */ + data->has_fan |= 0x40; + data->has_pwm |= 0x40; + } + if (!(tmp & 0x40) && (val & 0x04)) { /* fan 8 */ + data->has_fan |= 0x80; + data->has_pwm |= 0x80; + } + } + + if (0x08 == (tmp & 0x0c)) { + if (val & 0x08) /* fan 9 */ + data->has_fan |= 0x100; + if (val & 0x10) /* fan 10 */ + data->has_fan |= 0x200; + } + + if (0x20 == (tmp & 0x30)) { + if (val & 0x20) /* fan 11 */ + data->has_fan |= 0x400; + if (val & 0x40) /* fan 12 */ + data->has_fan |= 0x800; + } + + if ((tmp & 0x01) && (val & 0x04)) { /* fan 8, second location */ + data->has_fan |= 0x80; + data->has_pwm |= 0x80; + } + + /* Register sysfs hooks */ + for (i = 0; i < ARRAY_SIZE(w83793_sensor_attr_2); i++) { + err = device_create_file(dev, + &w83793_sensor_attr_2[i].dev_attr); + if (err) + goto exit_remove; + } + + for (i = 0; i < ARRAY_SIZE(sda_single_files); i++) { + err = device_create_file(dev, &sda_single_files[i].dev_attr); + if (err) + goto exit_remove; + + } + + for (i = 5; i < 12; i++) { + int j; + if (!(data->has_fan & (1 << i))) + continue; + for (j = 0; j < files_fan; j++) { + err = device_create_file(dev, + &w83793_left_fan[(i - 5) * files_fan + + j].dev_attr); + if (err) + goto exit_remove; + } + } + + for (i = 3; i < 8; i++) { + int j; + if (!(data->has_pwm & (1 << i))) + continue; + for (j = 0; j < files_pwm; j++) { + err = device_create_file(dev, + &w83793_left_pwm[(i - 3) * files_pwm + + j].dev_attr); + if (err) + goto exit_remove; + } + } + + data->class_dev = hwmon_device_register(dev); + if (IS_ERR(data->class_dev)) { + err = PTR_ERR(data->class_dev); + goto exit_remove; + } + + return 0; + + /* Unregister sysfs hooks */ + +exit_remove: + for (i = 0; i < ARRAY_SIZE(w83793_sensor_attr_2); i++) + device_remove_file(dev, &w83793_sensor_attr_2[i].dev_attr); + + for (i = 0; i < ARRAY_SIZE(sda_single_files); i++) + device_remove_file(dev, &sda_single_files[i].dev_attr); + + for (i = 0; i < ARRAY_SIZE(w83793_left_fan); i++) + device_remove_file(dev, &w83793_left_fan[i].dev_attr); + + for (i = 0; i < ARRAY_SIZE(w83793_left_pwm); i++) + device_remove_file(dev, &w83793_left_pwm[i].dev_attr); + + if (data->lm75[0] != NULL) { + i2c_detach_client(data->lm75[0]); + kfree(data->lm75[0]); + } + if (data->lm75[1] != NULL) { + i2c_detach_client(data->lm75[1]); + kfree(data->lm75[1]); + } +detach_client: + i2c_detach_client(client); +free_mem: + kfree(data); +exit: + return err; +} + +static void w83793_update_nonvolatile(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct w83793_data *data = i2c_get_clientdata(client); + int i, j; + /* + They are somewhat "stable" registers, and to update them everytime + takes so much time, it's just not worthy. Update them in a long + interval to avoid exception. + */ + if (!(time_after(jiffies, data->last_nonvolatile + HZ * 300) + || !data->valid)) + return; + /* update voltage limits */ + for (i = 1; i < 3; i++) { + for (j = 0; j < ARRAY_SIZE(data->in); j++) { + data->in[j][i] = + w83793_read_value(client, W83793_REG_IN[j][i]); + } + data->in_low_bits[i] = + w83793_read_value(client, W83793_REG_IN_LOW_BITS[i]); + } + + for (i = 0; i < ARRAY_SIZE(data->fan_min); i++) { + /* Update the Fan measured value and limits */ + if (!(data->has_fan & (1 << i))) { + continue; + } + data->fan_min[i] = + w83793_read_value(client, W83793_REG_FAN_MIN(i)) << 8; + data->fan_min[i] |= + w83793_read_value(client, W83793_REG_FAN_MIN(i) + 1); + } + + for (i = 0; i < ARRAY_SIZE(data->temp_fan_map); i++) { + data->temp_fan_map[i] = + w83793_read_value(client, W83793_REG_TEMP_FAN_MAP(i)); + for (j = 1; j < 5; j++) { + data->temp[i][j] = + w83793_read_value(client, W83793_REG_TEMP[i][j]); + } + data->temp_cruise[i] = + w83793_read_value(client, W83793_REG_TEMP_CRUISE(i)); + for (j = 0; j < 7; j++) { + data->sf2_pwm[i][j] = + w83793_read_value(client, W83793_REG_SF2_PWM(i, j)); + data->sf2_temp[i][j] = + w83793_read_value(client, + W83793_REG_SF2_TEMP(i, j)); + } + } + + for (i = 0; i < ARRAY_SIZE(data->temp_mode); i++) + data->temp_mode[i] = + w83793_read_value(client, W83793_REG_TEMP_MODE[i]); + + for (i = 0; i < ARRAY_SIZE(data->tolerance); i++) { + data->tolerance[i] = + w83793_read_value(client, W83793_REG_TEMP_TOL(i)); + } + + for (i = 0; i < ARRAY_SIZE(data->pwm); i++) { + if (!(data->has_pwm & (1 << i))) + continue; + data->pwm[i][PWM_NONSTOP] = + w83793_read_value(client, W83793_REG_PWM(i, PWM_NONSTOP)); + data->pwm[i][PWM_START] = + w83793_read_value(client, W83793_REG_PWM(i, PWM_START)); + data->pwm_stop_time[i] = + w83793_read_value(client, W83793_REG_PWM_STOP_TIME(i)); + } + + data->pwm_default = w83793_read_value(client, W83793_REG_PWM_DEFAULT); + data->pwm_enable = w83793_read_value(client, W83793_REG_PWM_ENABLE); + data->pwm_uptime = w83793_read_value(client, W83793_REG_PWM_UPTIME); + data->pwm_downtime = w83793_read_value(client, W83793_REG_PWM_DOWNTIME); + data->temp_critical = + w83793_read_value(client, W83793_REG_TEMP_CRITICAL); + data->beep_enable = w83793_read_value(client, W83793_REG_OVT_BEEP); + + for (i = 0; i < ARRAY_SIZE(data->beeps); i++) { + data->beeps[i] = w83793_read_value(client, W83793_REG_BEEP(i)); + } + + data->last_nonvolatile = jiffies; +} + +static struct w83793_data *w83793_update_device(struct device *dev) +{ + struct i2c_client *client = to_i2c_client(dev); + struct w83793_data *data = i2c_get_clientdata(client); + int i; + + mutex_lock(&data->update_lock); + + if (!(time_after(jiffies, data->last_updated + HZ * 2) + || !data->valid)) + goto END; + + /* Update the voltages measured value and limits */ + for (i = 0; i < ARRAY_SIZE(data->in); i++) + data->in[i][IN_READ] = + w83793_read_value(client, W83793_REG_IN[i][IN_READ]); + + data->in_low_bits[IN_READ] = + w83793_read_value(client, W83793_REG_IN_LOW_BITS[IN_READ]); + + for (i = 0; i < ARRAY_SIZE(data->fan); i++) { + if (!(data->has_fan & (1 << i))) { + continue; + } + data->fan[i] = + w83793_read_value(client, W83793_REG_FAN(i)) << 8; + data->fan[i] |= + w83793_read_value(client, W83793_REG_FAN(i) + 1); + } + + for (i = 0; i < ARRAY_SIZE(data->temp); i++) + data->temp[i][TEMP_READ] = + w83793_read_value(client, W83793_REG_TEMP[i][TEMP_READ]); + + data->temp_low_bits = + w83793_read_value(client, W83793_REG_TEMP_LOW_BITS); + + for (i = 0; i < ARRAY_SIZE(data->pwm); i++) { + if (data->has_pwm & (1 << i)) + data->pwm[i][PWM_DUTY] = + w83793_read_value(client, + W83793_REG_PWM(i, PWM_DUTY)); + } + + for (i = 0; i < ARRAY_SIZE(data->alarms); i++) + data->alarms[i] = + w83793_read_value(client, W83793_REG_ALARM(i)); + data->vid[0] = w83793_read_value(client, W83793_REG_VID_INA); + data->vid[1] = w83793_read_value(client, W83793_REG_VID_INB); + w83793_update_nonvolatile(dev); + data->last_updated = jiffies; + data->valid = 1; + +END: + mutex_unlock(&data->update_lock); + return data; +} + +/* Ignore the possibility that somebody change bank outside the driver + Must be called with data->update_lock held, except during initialization */ +static u8 w83793_read_value(struct i2c_client *client, u16 reg) +{ + struct w83793_data *data = i2c_get_clientdata(client); + u8 res = 0xff; + u8 new_bank = reg >> 8; + + new_bank |= data->bank & 0xfc; + if (data->bank != new_bank) { + if (i2c_smbus_write_byte_data + (client, W83793_REG_BANKSEL, new_bank) >= 0) + data->bank = new_bank; + else { + dev_err(&client->dev, + "set bank to %d failed, fall back " + "to bank %d, read reg 0x%x error\n", + new_bank, data->bank, reg); + res = 0x0; /* read 0x0 from the chip */ + goto END; + } + } + res = i2c_smbus_read_byte_data(client, reg & 0xff); +END: + return res; +} + +/* Must be called with data->update_lock held, except during initialization */ +static int w83793_write_value(struct i2c_client *client, u16 reg, u8 value) +{ + struct w83793_data *data = i2c_get_clientdata(client); + int res; + u8 new_bank = reg >> 8; + + new_bank |= data->bank & 0xfc; + if (data->bank != new_bank) { + if ((res = i2c_smbus_write_byte_data + (client, W83793_REG_BANKSEL, new_bank)) >= 0) + data->bank = new_bank; + else { + dev_err(&client->dev, + "set bank to %d failed, fall back " + "to bank %d, write reg 0x%x error\n", + new_bank, data->bank, reg); + goto END; + } + } + + res = i2c_smbus_write_byte_data(client, reg & 0xff, value); +END: + return res; +} + +static int __init sensors_w83793_init(void) +{ + return i2c_add_driver(&w83793_driver); +} + +static void __exit sensors_w83793_exit(void) +{ + i2c_del_driver(&w83793_driver); +} + +MODULE_AUTHOR("Yuan Mu"); +MODULE_DESCRIPTION("w83793 driver"); +MODULE_LICENSE("GPL"); + +module_init(sensors_w83793_init); +module_exit(sensors_w83793_exit); |