diff options
Diffstat (limited to 'drivers/hwmon/it87.c')
| -rw-r--r-- | drivers/hwmon/it87.c | 178 |
1 files changed, 154 insertions, 24 deletions
diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c index b0ee57492228bc..e7f14e61d6f2b1 100644 --- a/drivers/hwmon/it87.c +++ b/drivers/hwmon/it87.c @@ -4,6 +4,7 @@ Supports: IT8705F Super I/O chip w/LPC interface IT8712F Super I/O chip w/LPC interface & SMBus + IT8716F Super I/O chip w/LPC interface Sis950 A clone of the IT8705F Copyright (C) 2001 Chris Gauthron <chrisg@0-in.com> @@ -50,7 +51,7 @@ static unsigned short normal_i2c[] = { 0x2d, I2C_CLIENT_END }; static unsigned short isa_address; /* Insmod parameters */ -I2C_CLIENT_INSMOD_2(it87, it8712); +I2C_CLIENT_INSMOD_3(it87, it8712, it8716); #define REG 0x2e /* The register to read/write */ #define DEV 0x07 /* Register: Logical device select */ @@ -101,6 +102,7 @@ superio_exit(void) #define IT8712F_DEVID 0x8712 #define IT8705F_DEVID 0x8705 +#define IT8716F_DEVID 0x8716 #define IT87_ACT_REG 0x30 #define IT87_BASE_REG 0x60 @@ -132,12 +134,18 @@ static u16 chip_type; #define IT87_REG_ALARM3 0x03 #define IT87_REG_VID 0x0a +/* Warning: register 0x0b is used for something completely different in + new chips/revisions. I suspect only 16-bit tachometer mode will work + for these. */ #define IT87_REG_FAN_DIV 0x0b +#define IT87_REG_FAN_16BIT 0x0c /* Monitors: 9 voltage (0 to 7, battery), 3 temp (1 to 3), 3 fan (1 to 3) */ #define IT87_REG_FAN(nr) (0x0d + (nr)) #define IT87_REG_FAN_MIN(nr) (0x10 + (nr)) +#define IT87_REG_FANX(nr) (0x18 + (nr)) +#define IT87_REG_FANX_MIN(nr) (0x1b + (nr)) #define IT87_REG_FAN_MAIN_CTRL 0x13 #define IT87_REG_FAN_CTL 0x14 #define IT87_REG_PWM(nr) (0x15 + (nr)) @@ -169,7 +177,16 @@ static inline u8 FAN_TO_REG(long rpm, int div) 254); } +static inline u16 FAN16_TO_REG(long rpm) +{ + if (rpm == 0) + return 0xffff; + return SENSORS_LIMIT((1350000 + rpm) / (rpm * 2), 1, 0xfffe); +} + #define FAN_FROM_REG(val,div) ((val)==0?-1:(val)==255?0:1350000/((val)*(div))) +/* The divider is fixed to 2 in 16-bit mode */ +#define FAN16_FROM_REG(val) ((val)==0?-1:(val)==0xffff?0:1350000/((val)*2)) #define TEMP_TO_REG(val) (SENSORS_LIMIT(((val)<0?(((val)-500)/1000):\ ((val)+500)/1000),-128,127)) @@ -205,8 +222,8 @@ struct it87_data { u8 in[9]; /* Register value */ u8 in_max[9]; /* Register value */ u8 in_min[9]; /* Register value */ - u8 fan[3]; /* Register value */ - u8 fan_min[3]; /* Register value */ + u16 fan[3]; /* Register values, possibly combined */ + u16 fan_min[3]; /* Register values, possibly combined */ u8 temp[3]; /* Register value */ u8 temp_high[3]; /* Register value */ u8 temp_low[3]; /* Register value */ @@ -657,6 +674,59 @@ show_pwm_offset(1); show_pwm_offset(2); show_pwm_offset(3); +/* A different set of callbacks for 16-bit fans */ +static ssize_t show_fan16(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); + int nr = sensor_attr->index; + struct it87_data *data = it87_update_device(dev); + return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan[nr])); +} + +static ssize_t show_fan16_min(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); + int nr = sensor_attr->index; + struct it87_data *data = it87_update_device(dev); + return sprintf(buf, "%d\n", FAN16_FROM_REG(data->fan_min[nr])); +} + +static ssize_t set_fan16_min(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); + int nr = sensor_attr->index; + struct i2c_client *client = to_i2c_client(dev); + struct it87_data *data = i2c_get_clientdata(client); + int val = simple_strtol(buf, NULL, 10); + + mutex_lock(&data->update_lock); + data->fan_min[nr] = FAN16_TO_REG(val); + it87_write_value(client, IT87_REG_FAN_MIN(nr), + data->fan_min[nr] & 0xff); + it87_write_value(client, IT87_REG_FANX_MIN(nr), + data->fan_min[nr] >> 8); + mutex_unlock(&data->update_lock); + return count; +} + +/* We want to use the same sysfs file names as 8-bit fans, but we need + different variable names, so we have to use SENSOR_ATTR instead of + SENSOR_DEVICE_ATTR. */ +#define show_fan16_offset(offset) \ +static struct sensor_device_attribute sensor_dev_attr_fan##offset##_input16 \ + = SENSOR_ATTR(fan##offset##_input, S_IRUGO, \ + show_fan16, NULL, offset - 1); \ +static struct sensor_device_attribute sensor_dev_attr_fan##offset##_min16 \ + = SENSOR_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ + show_fan16_min, set_fan16_min, offset - 1) + +show_fan16_offset(1); +show_fan16_offset(2); +show_fan16_offset(3); + /* Alarms */ static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, char *buf) { @@ -721,6 +791,7 @@ static int __init it87_find(unsigned short *address) superio_enter(); chip_type = superio_inw(DEVID); if (chip_type != IT8712F_DEVID + && chip_type != IT8716F_DEVID && chip_type != IT8705F_DEVID) goto exit; @@ -800,8 +871,16 @@ static int it87_detect(struct i2c_adapter *adapter, int address, int kind) i = it87_read_value(new_client, IT87_REG_CHIPID); if (i == 0x90) { kind = it87; - if ((is_isa) && (chip_type == IT8712F_DEVID)) - kind = it8712; + if (is_isa) { + switch (chip_type) { + case IT8712F_DEVID: + kind = it8712; + break; + case IT8716F_DEVID: + kind = it8716; + break; + } + } } else { if (kind == 0) @@ -818,6 +897,8 @@ static int it87_detect(struct i2c_adapter *adapter, int address, int kind) name = "it87"; } else if (kind == it8712) { name = "it8712"; + } else if (kind == it8716) { + name = "it8716"; } /* Fill in the remaining client fields and put it into the global list */ @@ -885,15 +966,41 @@ static int it87_detect(struct i2c_adapter *adapter, int address, int kind) device_create_file(&new_client->dev, &sensor_dev_attr_temp1_type.dev_attr); device_create_file(&new_client->dev, &sensor_dev_attr_temp2_type.dev_attr); device_create_file(&new_client->dev, &sensor_dev_attr_temp3_type.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_fan1_input.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_fan2_input.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_fan3_input.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_fan1_min.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_fan2_min.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_fan3_min.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_fan1_div.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_fan2_div.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_fan3_div.dev_attr); + + if (data->type == it8716) { /* 16-bit tachometers */ + device_create_file(&new_client->dev, + &sensor_dev_attr_fan1_input16.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_fan2_input16.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_fan3_input16.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_fan1_min16.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_fan2_min16.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_fan3_min16.dev_attr); + } else { + device_create_file(&new_client->dev, + &sensor_dev_attr_fan1_input.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_fan2_input.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_fan3_input.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_fan1_min.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_fan2_min.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_fan3_min.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_fan1_div.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_fan2_div.dev_attr); + device_create_file(&new_client->dev, + &sensor_dev_attr_fan3_div.dev_attr); + } + device_create_file(&new_client->dev, &dev_attr_alarms); if (enable_pwm_interface) { device_create_file(&new_client->dev, &sensor_dev_attr_pwm1_enable.dev_attr); @@ -904,7 +1011,7 @@ static int it87_detect(struct i2c_adapter *adapter, int address, int kind) device_create_file(&new_client->dev, &sensor_dev_attr_pwm3.dev_attr); } - if (data->type == it8712) { + if (data->type == it8712 || data->type == it8716) { data->vrm = vid_which_vrm(); device_create_file_vrm(new_client); device_create_file_vid(new_client); @@ -1069,6 +1176,17 @@ static void it87_init_client(struct i2c_client *client, struct it87_data *data) it87_write_value(client, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl); } + /* Set tachometers to 16-bit mode if needed */ + if (data->type == it8716) { + tmp = it87_read_value(client, IT87_REG_FAN_16BIT); + if ((tmp & 0x07) != 0x07) { + dev_dbg(&client->dev, + "Setting fan1-3 to 16-bit mode\n"); + it87_write_value(client, IT87_REG_FAN_16BIT, + tmp | 0x07); + } + } + /* Set current fan mode registers and the default settings for the * other mode registers */ for (i = 0; i < 3; i++) { @@ -1126,10 +1244,17 @@ static struct it87_data *it87_update_device(struct device *dev) data->in_max[8] = 255; for (i = 0; i < 3; i++) { - data->fan[i] = - it87_read_value(client, IT87_REG_FAN(i)); data->fan_min[i] = it87_read_value(client, IT87_REG_FAN_MIN(i)); + data->fan[i] = it87_read_value(client, + IT87_REG_FAN(i)); + /* Add high byte if in 16-bit mode */ + if (data->type == it8716) { + data->fan[i] |= it87_read_value(client, + IT87_REG_FANX(i)) << 8; + data->fan_min[i] |= it87_read_value(client, + IT87_REG_FANX_MIN(i)) << 8; + } } for (i = 0; i < 3; i++) { data->temp[i] = @@ -1140,10 +1265,13 @@ static struct it87_data *it87_update_device(struct device *dev) it87_read_value(client, IT87_REG_TEMP_LOW(i)); } - i = it87_read_value(client, IT87_REG_FAN_DIV); - data->fan_div[0] = i & 0x07; - data->fan_div[1] = (i >> 3) & 0x07; - data->fan_div[2] = (i & 0x40) ? 3 : 1; + /* Newer chips don't have clock dividers */ + if (data->type != it8716) { + i = it87_read_value(client, IT87_REG_FAN_DIV); + data->fan_div[0] = i & 0x07; + data->fan_div[1] = (i >> 3) & 0x07; + data->fan_div[2] = (i & 0x40) ? 3 : 1; + } data->alarms = it87_read_value(client, IT87_REG_ALARM1) | @@ -1153,9 +1281,11 @@ static struct it87_data *it87_update_device(struct device *dev) data->sensor = it87_read_value(client, IT87_REG_TEMP_ENABLE); /* The 8705 does not have VID capability */ - if (data->type == it8712) { + if (data->type == it8712 || data->type == it8716) { data->vid = it87_read_value(client, IT87_REG_VID); - data->vid &= 0x1f; + /* The older IT8712F revisions had only 5 VID pins, + but we assume it is always safe to read 6 bits. */ + data->vid &= 0x3f; } data->last_updated = jiffies; data->valid = 1; @@ -1194,7 +1324,7 @@ static void __exit sm_it87_exit(void) MODULE_AUTHOR("Chris Gauthron <chrisg@0-in.com>"); -MODULE_DESCRIPTION("IT8705F, IT8712F, Sis950 driver"); +MODULE_DESCRIPTION("IT8705F/8712F/8716F, SiS950 driver"); module_param(update_vbat, bool, 0); MODULE_PARM_DESC(update_vbat, "Update vbat if set else return powerup value"); module_param(fix_pwm_polarity, bool, 0); |