X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fhwmon%2Fit87.c;h=1ed8b7e2c35df01e57dfab60aab6c0dc8825c37e;hb=97bf2856c6014879bd04983a3e9dfcdac1e7fe85;hp=d7a9401600bb968ec3f81435734b2f0f618a4284;hpb=76828883507a47dae78837ab5dec5a5b4513c667;p=linux-2.6.git diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c index d7a940160..1ed8b7e2c 100644 --- a/drivers/hwmon/it87.c +++ b/drivers/hwmon/it87.c @@ -3,11 +3,13 @@ monitoring. Supports: IT8705F Super I/O chip w/LPC interface - IT8712F Super I/O chip w/LPC interface & SMBus + IT8712F Super I/O chip w/LPC interface + IT8716F Super I/O chip w/LPC interface + IT8718F Super I/O chip w/LPC interface Sis950 A clone of the IT8705F Copyright (C) 2001 Chris Gauthron - Largely inspired by lm78.c of the same package + Copyright (C) 2005-2006 Jean Delvare 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 @@ -24,13 +26,6 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ -/* - djg@pdp8.net David Gesswein 7/18/01 - Modified to fix bug with not all alarms enabled. - Added ability to read battery voltage and select temperature sensor - type at module load time. -*/ - #include #include #include @@ -41,20 +36,19 @@ #include #include #include +#include +#include #include -/* Addresses to scan */ -static unsigned short normal_i2c[] = { 0x2d, I2C_CLIENT_END }; static unsigned short isa_address; - -/* Insmod parameters */ -I2C_CLIENT_INSMOD_2(it87, it8712); +enum chips { it87, it8712, it8716, it8718 }; #define REG 0x2e /* The register to read/write */ #define DEV 0x07 /* Register: Logical device select */ #define VAL 0x2f /* The value to read/write */ #define PME 0x04 /* The device with the fan registers in it */ +#define GPIO 0x07 /* The device with the IT8718F VID value in it */ #define DEVID 0x20 /* Register: Device ID */ #define DEVREV 0x22 /* Register: Device Revision */ @@ -76,10 +70,10 @@ static int superio_inw(int reg) } static inline void -superio_select(void) +superio_select(int ldn) { outb(DEV, REG); - outb(PME, VAL); + outb(ldn, VAL); } static inline void @@ -98,20 +92,27 @@ superio_exit(void) outb(0x02, VAL); } +/* Logical device 4 registers */ #define IT8712F_DEVID 0x8712 #define IT8705F_DEVID 0x8705 +#define IT8716F_DEVID 0x8716 +#define IT8718F_DEVID 0x8718 #define IT87_ACT_REG 0x30 #define IT87_BASE_REG 0x60 +/* Logical device 7 registers (IT8712F and later) */ +#define IT87_SIO_PINX2_REG 0x2c /* Pin selection */ +#define IT87_SIO_VID_REG 0xfc /* VID value */ + /* Update battery voltage after every reading if true */ static int update_vbat; /* Not all BIOSes properly configure the PWM registers */ static int fix_pwm_polarity; -/* Chip Type */ - +/* Values read from Super-I/O config space */ static u16 chip_type; +static u8 vid_value; /* Many IT87 constants specified below */ @@ -130,13 +131,21 @@ static u16 chip_type; #define IT87_REG_ALARM2 0x02 #define IT87_REG_ALARM3 0x03 +/* The IT8718F has the VID value in a different register, in Super-I/O + configuration space. */ #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)) @@ -149,8 +158,6 @@ static u16 chip_type; #define IT87_REG_TEMP_HIGH(nr) (0x40 + (nr) * 2) #define IT87_REG_TEMP_LOW(nr) (0x41 + (nr) * 2) -#define IT87_REG_I2C_ADDR 0x48 - #define IT87_REG_VIN_ENABLE 0x50 #define IT87_REG_TEMP_ENABLE 0x51 @@ -168,7 +175,16 @@ 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)) @@ -180,7 +196,7 @@ static inline u8 FAN_TO_REG(long rpm, int div) static int DIV_TO_REG(int val) { int answer = 0; - while ((val >>= 1) != 0) + while (answer < 7 && (val >>= 1)) answer++; return answer; } @@ -194,18 +210,19 @@ static int DIV_TO_REG(int val) struct it87_data { struct i2c_client client; struct class_device *class_dev; - struct semaphore lock; + struct mutex lock; enum chips type; - struct semaphore update_lock; + struct mutex update_lock; char valid; /* !=0 if following fields are valid */ unsigned long last_updated; /* In jiffies */ 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 */ + u8 in_max[8]; /* Register value */ + u8 in_min[8]; /* Register value */ + u8 has_fan; /* Bitfield, fans enabled */ + 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 */ @@ -219,33 +236,22 @@ struct it87_data { }; -static int it87_attach_adapter(struct i2c_adapter *adapter); -static int it87_isa_attach_adapter(struct i2c_adapter *adapter); -static int it87_detect(struct i2c_adapter *adapter, int address, int kind); +static int it87_detect(struct i2c_adapter *adapter); static int it87_detach_client(struct i2c_client *client); -static int it87_read_value(struct i2c_client *client, u8 register); -static int it87_write_value(struct i2c_client *client, u8 register, - u8 value); +static int it87_read_value(struct i2c_client *client, u8 reg); +static void it87_write_value(struct i2c_client *client, u8 reg, u8 value); static struct it87_data *it87_update_device(struct device *dev); static int it87_check_pwm(struct i2c_client *client); static void it87_init_client(struct i2c_client *client, struct it87_data *data); -static struct i2c_driver it87_driver = { - .driver = { - .name = "it87", - }, - .id = I2C_DRIVERID_IT87, - .attach_adapter = it87_attach_adapter, - .detach_client = it87_detach_client, -}; - static struct i2c_driver it87_isa_driver = { .driver = { + .owner = THIS_MODULE, .name = "it87-isa", }, - .attach_adapter = it87_isa_attach_adapter, + .attach_adapter = it87_detect, .detach_client = it87_detach_client, }; @@ -290,11 +296,11 @@ static ssize_t set_in_min(struct device *dev, struct device_attribute *attr, struct it87_data *data = i2c_get_clientdata(client); unsigned long val = simple_strtoul(buf, NULL, 10); - down(&data->update_lock); + mutex_lock(&data->update_lock); data->in_min[nr] = IN_TO_REG(val); it87_write_value(client, IT87_REG_VIN_MIN(nr), data->in_min[nr]); - up(&data->update_lock); + mutex_unlock(&data->update_lock); return count; } static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, @@ -307,11 +313,11 @@ static ssize_t set_in_max(struct device *dev, struct device_attribute *attr, struct it87_data *data = i2c_get_clientdata(client); unsigned long val = simple_strtoul(buf, NULL, 10); - down(&data->update_lock); + mutex_lock(&data->update_lock); data->in_max[nr] = IN_TO_REG(val); it87_write_value(client, IT87_REG_VIN_MAX(nr), data->in_max[nr]); - up(&data->update_lock); + mutex_unlock(&data->update_lock); return count; } @@ -381,10 +387,10 @@ static ssize_t set_temp_max(struct device *dev, struct device_attribute *attr, struct it87_data *data = i2c_get_clientdata(client); int val = simple_strtol(buf, NULL, 10); - down(&data->update_lock); + mutex_lock(&data->update_lock); data->temp_high[nr] = TEMP_TO_REG(val); it87_write_value(client, IT87_REG_TEMP_HIGH(nr), data->temp_high[nr]); - up(&data->update_lock); + mutex_unlock(&data->update_lock); return count; } static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr, @@ -397,10 +403,10 @@ static ssize_t set_temp_min(struct device *dev, struct device_attribute *attr, struct it87_data *data = i2c_get_clientdata(client); int val = simple_strtol(buf, NULL, 10); - down(&data->update_lock); + mutex_lock(&data->update_lock); data->temp_low[nr] = TEMP_TO_REG(val); it87_write_value(client, IT87_REG_TEMP_LOW(nr), data->temp_low[nr]); - up(&data->update_lock); + mutex_unlock(&data->update_lock); return count; } #define show_temp_offset(offset) \ @@ -440,7 +446,7 @@ static ssize_t set_sensor(struct device *dev, struct device_attribute *attr, struct it87_data *data = i2c_get_clientdata(client); int val = simple_strtol(buf, NULL, 10); - down(&data->update_lock); + mutex_lock(&data->update_lock); data->sensor &= ~(1 << nr); data->sensor &= ~(8 << nr); @@ -450,11 +456,11 @@ static ssize_t set_sensor(struct device *dev, struct device_attribute *attr, else if (val == 2) data->sensor |= 8 << nr; else if (val != 0) { - up(&data->update_lock); + mutex_unlock(&data->update_lock); return -EINVAL; } it87_write_value(client, IT87_REG_TEMP_ENABLE, data->sensor); - up(&data->update_lock); + mutex_unlock(&data->update_lock); return count; } #define show_sensor_offset(offset) \ @@ -524,7 +530,7 @@ static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, int val = simple_strtol(buf, NULL, 10); u8 reg = it87_read_value(client, IT87_REG_FAN_DIV); - down(&data->update_lock); + mutex_lock(&data->update_lock); switch (nr) { case 0: data->fan_div[nr] = reg & 0x07; break; case 1: data->fan_div[nr] = (reg >> 3) & 0x07; break; @@ -533,7 +539,7 @@ static ssize_t set_fan_min(struct device *dev, struct device_attribute *attr, data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); it87_write_value(client, IT87_REG_FAN_MIN(nr), data->fan_min[nr]); - up(&data->update_lock); + mutex_unlock(&data->update_lock); return count; } static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, @@ -544,15 +550,15 @@ static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, struct i2c_client *client = to_i2c_client(dev); struct it87_data *data = i2c_get_clientdata(client); - int val = simple_strtol(buf, NULL, 10); - int i, min[3]; + unsigned long val = simple_strtoul(buf, NULL, 10); + int min; u8 old; - down(&data->update_lock); + mutex_lock(&data->update_lock); old = it87_read_value(client, IT87_REG_FAN_DIV); - for (i = 0; i < 3; i++) - min[i] = FAN_FROM_REG(data->fan_min[i], DIV_FROM_REG(data->fan_div[i])); + /* Save fan min limit */ + min = FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr])); switch (nr) { case 0: @@ -572,11 +578,11 @@ static ssize_t set_fan_div(struct device *dev, struct device_attribute *attr, val |= 0x1 << 6; it87_write_value(client, IT87_REG_FAN_DIV, val); - for (i = 0; i < 3; i++) { - data->fan_min[i]=FAN_TO_REG(min[i], DIV_FROM_REG(data->fan_div[i])); - it87_write_value(client, IT87_REG_FAN_MIN(i), data->fan_min[i]); - } - up(&data->update_lock); + /* Restore fan min limit */ + data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); + it87_write_value(client, IT87_REG_FAN_MIN(nr), data->fan_min[nr]); + + mutex_unlock(&data->update_lock); return count; } static ssize_t set_pwm_enable(struct device *dev, @@ -589,7 +595,7 @@ static ssize_t set_pwm_enable(struct device *dev, struct it87_data *data = i2c_get_clientdata(client); int val = simple_strtol(buf, NULL, 10); - down(&data->update_lock); + mutex_lock(&data->update_lock); if (val == 0) { int tmp; @@ -606,11 +612,11 @@ static ssize_t set_pwm_enable(struct device *dev, /* set saved pwm value, clear FAN_CTLX PWM mode bit */ it87_write_value(client, IT87_REG_PWM(nr), PWM_TO_REG(data->manual_pwm_ctl[nr])); } else { - up(&data->update_lock); + mutex_unlock(&data->update_lock); return -EINVAL; } - up(&data->update_lock); + mutex_unlock(&data->update_lock); return count; } static ssize_t set_pwm(struct device *dev, struct device_attribute *attr, @@ -626,11 +632,11 @@ static ssize_t set_pwm(struct device *dev, struct device_attribute *attr, if (val < 0 || val > 255) return -EINVAL; - down(&data->update_lock); + mutex_lock(&data->update_lock); data->manual_pwm_ctl[nr] = val; if (data->fan_main_ctrl & (1 << nr)) it87_write_value(client, IT87_REG_PWM(nr), PWM_TO_REG(data->manual_pwm_ctl[nr])); - up(&data->update_lock); + mutex_unlock(&data->update_lock); return count; } @@ -656,6 +662,59 @@ 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) { @@ -683,8 +742,6 @@ store_vrm_reg(struct device *dev, struct device_attribute *attr, const char *buf return count; } static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg); -#define device_create_file_vrm(client) \ -device_create_file(&client->dev, &dev_attr_vrm) static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf) @@ -693,24 +750,88 @@ show_vid_reg(struct device *dev, struct device_attribute *attr, char *buf) return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm)); } static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL); -#define device_create_file_vid(client) \ -device_create_file(&client->dev, &dev_attr_cpu0_vid) - -/* This function is called when: - * it87_driver is inserted (when this module is loaded), for each - available adapter - * when a new adapter is inserted (and it87_driver is still present) */ -static int it87_attach_adapter(struct i2c_adapter *adapter) -{ - if (!(adapter->class & I2C_CLASS_HWMON)) - return 0; - return i2c_probe(adapter, &addr_data, it87_detect); -} -static int it87_isa_attach_adapter(struct i2c_adapter *adapter) -{ - return it87_detect(adapter, isa_address, -1); -} +static struct attribute *it87_attributes[] = { + &sensor_dev_attr_in0_input.dev_attr.attr, + &sensor_dev_attr_in1_input.dev_attr.attr, + &sensor_dev_attr_in2_input.dev_attr.attr, + &sensor_dev_attr_in3_input.dev_attr.attr, + &sensor_dev_attr_in4_input.dev_attr.attr, + &sensor_dev_attr_in5_input.dev_attr.attr, + &sensor_dev_attr_in6_input.dev_attr.attr, + &sensor_dev_attr_in7_input.dev_attr.attr, + &sensor_dev_attr_in8_input.dev_attr.attr, + &sensor_dev_attr_in0_min.dev_attr.attr, + &sensor_dev_attr_in1_min.dev_attr.attr, + &sensor_dev_attr_in2_min.dev_attr.attr, + &sensor_dev_attr_in3_min.dev_attr.attr, + &sensor_dev_attr_in4_min.dev_attr.attr, + &sensor_dev_attr_in5_min.dev_attr.attr, + &sensor_dev_attr_in6_min.dev_attr.attr, + &sensor_dev_attr_in7_min.dev_attr.attr, + &sensor_dev_attr_in0_max.dev_attr.attr, + &sensor_dev_attr_in1_max.dev_attr.attr, + &sensor_dev_attr_in2_max.dev_attr.attr, + &sensor_dev_attr_in3_max.dev_attr.attr, + &sensor_dev_attr_in4_max.dev_attr.attr, + &sensor_dev_attr_in5_max.dev_attr.attr, + &sensor_dev_attr_in6_max.dev_attr.attr, + &sensor_dev_attr_in7_max.dev_attr.attr, + + &sensor_dev_attr_temp1_input.dev_attr.attr, + &sensor_dev_attr_temp2_input.dev_attr.attr, + &sensor_dev_attr_temp3_input.dev_attr.attr, + &sensor_dev_attr_temp1_max.dev_attr.attr, + &sensor_dev_attr_temp2_max.dev_attr.attr, + &sensor_dev_attr_temp3_max.dev_attr.attr, + &sensor_dev_attr_temp1_min.dev_attr.attr, + &sensor_dev_attr_temp2_min.dev_attr.attr, + &sensor_dev_attr_temp3_min.dev_attr.attr, + &sensor_dev_attr_temp1_type.dev_attr.attr, + &sensor_dev_attr_temp2_type.dev_attr.attr, + &sensor_dev_attr_temp3_type.dev_attr.attr, + + &dev_attr_alarms.attr, + NULL +}; + +static const struct attribute_group it87_group = { + .attrs = it87_attributes, +}; + +static struct attribute *it87_attributes_opt[] = { + &sensor_dev_attr_fan1_input16.dev_attr.attr, + &sensor_dev_attr_fan1_min16.dev_attr.attr, + &sensor_dev_attr_fan2_input16.dev_attr.attr, + &sensor_dev_attr_fan2_min16.dev_attr.attr, + &sensor_dev_attr_fan3_input16.dev_attr.attr, + &sensor_dev_attr_fan3_min16.dev_attr.attr, + + &sensor_dev_attr_fan1_input.dev_attr.attr, + &sensor_dev_attr_fan1_min.dev_attr.attr, + &sensor_dev_attr_fan1_div.dev_attr.attr, + &sensor_dev_attr_fan2_input.dev_attr.attr, + &sensor_dev_attr_fan2_min.dev_attr.attr, + &sensor_dev_attr_fan2_div.dev_attr.attr, + &sensor_dev_attr_fan3_input.dev_attr.attr, + &sensor_dev_attr_fan3_min.dev_attr.attr, + &sensor_dev_attr_fan3_div.dev_attr.attr, + + &sensor_dev_attr_pwm1_enable.dev_attr.attr, + &sensor_dev_attr_pwm2_enable.dev_attr.attr, + &sensor_dev_attr_pwm3_enable.dev_attr.attr, + &sensor_dev_attr_pwm1.dev_attr.attr, + &sensor_dev_attr_pwm2.dev_attr.attr, + &sensor_dev_attr_pwm3.dev_attr.attr, + + &dev_attr_vrm.attr, + &dev_attr_cpu0_vid.attr, + NULL +}; + +static const struct attribute_group it87_group_opt = { + .attrs = it87_attributes_opt, +}; /* SuperIO detection - will change isa_address if a chip is found */ static int __init it87_find(unsigned short *address) @@ -720,10 +841,12 @@ 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 != IT8718F_DEVID && chip_type != IT8705F_DEVID) goto exit; - superio_select(); + superio_select(PME); if (!(superio_inb(IT87_ACT_REG) & 0x01)) { pr_info("it87: Device not activated, skipping\n"); goto exit; @@ -739,35 +862,41 @@ static int __init it87_find(unsigned short *address) pr_info("it87: Found IT%04xF chip at 0x%x, revision %d\n", chip_type, *address, superio_inb(DEVREV) & 0x0f); + /* Read GPIO config and VID value from LDN 7 (GPIO) */ + if (chip_type != IT8705F_DEVID) { + int reg; + + superio_select(GPIO); + if (chip_type == it8718) + vid_value = superio_inb(IT87_SIO_VID_REG); + + reg = superio_inb(IT87_SIO_PINX2_REG); + if (reg & (1 << 0)) + pr_info("it87: in3 is VCC (+5V)\n"); + if (reg & (1 << 1)) + pr_info("it87: in7 is VCCH (+5V Stand-By)\n"); + } + exit: superio_exit(); return err; } /* This function is called by i2c_probe */ -static int it87_detect(struct i2c_adapter *adapter, int address, int kind) +static int it87_detect(struct i2c_adapter *adapter) { - int i; struct i2c_client *new_client; struct it87_data *data; int err = 0; - const char *name = ""; - int is_isa = i2c_is_isa_adapter(adapter); + const char *name; int enable_pwm_interface; - if (!is_isa && - !i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) - goto ERROR0; - /* Reserve the ISA region */ - if (is_isa) - if (!request_region(address, IT87_EXTENT, - it87_isa_driver.driver.name)) - goto ERROR0; - - /* For now, we presume we have a valid client. We create the - client structure, even though we cannot fill it completely yet. - But it allows us to access it87_{read,write}_value. */ + if (!request_region(isa_address, IT87_EXTENT, + it87_isa_driver.driver.name)){ + err = -EBUSY; + goto ERROR0; + } if (!(data = kzalloc(sizeof(struct it87_data), GFP_KERNEL))) { err = -ENOMEM; @@ -775,65 +904,46 @@ static int it87_detect(struct i2c_adapter *adapter, int address, int kind) } new_client = &data->client; - if (is_isa) - init_MUTEX(&data->lock); + mutex_init(&data->lock); i2c_set_clientdata(new_client, data); - new_client->addr = address; + new_client->addr = isa_address; new_client->adapter = adapter; - new_client->driver = is_isa ? &it87_isa_driver : &it87_driver; - new_client->flags = 0; + new_client->driver = &it87_isa_driver; /* Now, we do the remaining detection. */ - - if (kind < 0) { - if ((it87_read_value(new_client, IT87_REG_CONFIG) & 0x80) - || (!is_isa - && it87_read_value(new_client, IT87_REG_I2C_ADDR) != address)) { - err = -ENODEV; - goto ERROR2; - } + if ((it87_read_value(new_client, IT87_REG_CONFIG) & 0x80) + || it87_read_value(new_client, IT87_REG_CHIPID) != 0x90) { + err = -ENODEV; + goto ERROR2; } /* Determine the chip type. */ - if (kind <= 0) { - i = it87_read_value(new_client, IT87_REG_CHIPID); - if (i == 0x90) { - kind = it87; - if ((is_isa) && (chip_type == IT8712F_DEVID)) - kind = it8712; - } - else { - if (kind == 0) - dev_info(&adapter->dev, - "Ignoring 'force' parameter for unknown chip at " - "adapter %d, address 0x%02x\n", - i2c_adapter_id(adapter), address); - err = -ENODEV; - goto ERROR2; - } - } - - if (kind == it87) { - name = "it87"; - } else if (kind == it8712) { + switch (chip_type) { + case IT8712F_DEVID: + data->type = it8712; name = "it8712"; + break; + case IT8716F_DEVID: + data->type = it8716; + name = "it8716"; + break; + case IT8718F_DEVID: + data->type = it8718; + name = "it8718"; + break; + default: + data->type = it87; + name = "it87"; } /* Fill in the remaining client fields and put it into the global list */ strlcpy(new_client->name, name, I2C_NAME_SIZE); - data->type = kind; - data->valid = 0; - init_MUTEX(&data->update_lock); + mutex_init(&data->update_lock); /* Tell the I2C layer a new client has arrived */ if ((err = i2c_attach_client(new_client))) goto ERROR2; - if (!is_isa) - dev_info(&new_client->dev, "The I2C interface to IT87xxF " - "hardware monitoring chips is deprecated. Please " - "report if you still rely on it.\n"); - /* Check PWM configuration */ enable_pwm_interface = it87_check_pwm(new_client); @@ -841,83 +951,109 @@ static int it87_detect(struct i2c_adapter *adapter, int address, int kind) it87_init_client(new_client, data); /* Register sysfs hooks */ - data->class_dev = hwmon_device_register(&new_client->dev); - if (IS_ERR(data->class_dev)) { - err = PTR_ERR(data->class_dev); + if ((err = sysfs_create_group(&new_client->dev.kobj, &it87_group))) goto ERROR3; + + /* Do not create fan files for disabled fans */ + if (data->type == it8716 || data->type == it8718) { + /* 16-bit tachometers */ + if (data->has_fan & (1 << 0)) { + if ((err = device_create_file(&new_client->dev, + &sensor_dev_attr_fan1_input16.dev_attr)) + || (err = device_create_file(&new_client->dev, + &sensor_dev_attr_fan1_min16.dev_attr))) + goto ERROR4; + } + if (data->has_fan & (1 << 1)) { + if ((err = device_create_file(&new_client->dev, + &sensor_dev_attr_fan2_input16.dev_attr)) + || (err = device_create_file(&new_client->dev, + &sensor_dev_attr_fan2_min16.dev_attr))) + goto ERROR4; + } + if (data->has_fan & (1 << 2)) { + if ((err = device_create_file(&new_client->dev, + &sensor_dev_attr_fan3_input16.dev_attr)) + || (err = device_create_file(&new_client->dev, + &sensor_dev_attr_fan3_min16.dev_attr))) + goto ERROR4; + } + } else { + /* 8-bit tachometers with clock divider */ + if (data->has_fan & (1 << 0)) { + if ((err = device_create_file(&new_client->dev, + &sensor_dev_attr_fan1_input.dev_attr)) + || (err = device_create_file(&new_client->dev, + &sensor_dev_attr_fan1_min.dev_attr)) + || (err = device_create_file(&new_client->dev, + &sensor_dev_attr_fan1_div.dev_attr))) + goto ERROR4; + } + if (data->has_fan & (1 << 1)) { + if ((err = device_create_file(&new_client->dev, + &sensor_dev_attr_fan2_input.dev_attr)) + || (err = device_create_file(&new_client->dev, + &sensor_dev_attr_fan2_min.dev_attr)) + || (err = device_create_file(&new_client->dev, + &sensor_dev_attr_fan2_div.dev_attr))) + goto ERROR4; + } + if (data->has_fan & (1 << 2)) { + if ((err = device_create_file(&new_client->dev, + &sensor_dev_attr_fan3_input.dev_attr)) + || (err = device_create_file(&new_client->dev, + &sensor_dev_attr_fan3_min.dev_attr)) + || (err = device_create_file(&new_client->dev, + &sensor_dev_attr_fan3_div.dev_attr))) + goto ERROR4; + } } - device_create_file(&new_client->dev, &sensor_dev_attr_in0_input.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_in1_input.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_in2_input.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_in3_input.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_in4_input.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_in5_input.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_in6_input.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_in7_input.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_in8_input.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_in0_min.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_in1_min.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_in2_min.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_in3_min.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_in4_min.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_in5_min.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_in6_min.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_in7_min.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_in0_max.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_in1_max.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_in2_max.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_in3_max.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_in4_max.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_in5_max.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_in6_max.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_in7_max.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_temp1_input.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_temp2_input.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_temp3_input.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_temp1_max.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_temp2_max.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_temp3_max.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_temp1_min.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_temp2_min.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_temp3_min.dev_attr); - 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); - 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); - device_create_file(&new_client->dev, &sensor_dev_attr_pwm2_enable.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_pwm3_enable.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_pwm1.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_pwm2.dev_attr); - device_create_file(&new_client->dev, &sensor_dev_attr_pwm3.dev_attr); + if ((err = device_create_file(&new_client->dev, + &sensor_dev_attr_pwm1_enable.dev_attr)) + || (err = device_create_file(&new_client->dev, + &sensor_dev_attr_pwm2_enable.dev_attr)) + || (err = device_create_file(&new_client->dev, + &sensor_dev_attr_pwm3_enable.dev_attr)) + || (err = device_create_file(&new_client->dev, + &sensor_dev_attr_pwm1.dev_attr)) + || (err = device_create_file(&new_client->dev, + &sensor_dev_attr_pwm2.dev_attr)) + || (err = device_create_file(&new_client->dev, + &sensor_dev_attr_pwm3.dev_attr))) + goto ERROR4; } - if (data->type == it8712) { + if (data->type == it8712 || data->type == it8716 + || data->type == it8718) { data->vrm = vid_which_vrm(); - device_create_file_vrm(new_client); - device_create_file_vid(new_client); + /* VID reading from Super-I/O config space if available */ + data->vid = vid_value; + if ((err = device_create_file(&new_client->dev, + &dev_attr_vrm)) + || (err = device_create_file(&new_client->dev, + &dev_attr_cpu0_vid))) + goto ERROR4; + } + + data->class_dev = hwmon_device_register(&new_client->dev); + if (IS_ERR(data->class_dev)) { + err = PTR_ERR(data->class_dev); + goto ERROR4; } return 0; +ERROR4: + sysfs_remove_group(&new_client->dev.kobj, &it87_group); + sysfs_remove_group(&new_client->dev.kobj, &it87_group_opt); ERROR3: i2c_detach_client(new_client); ERROR2: kfree(data); ERROR1: - if (is_isa) - release_region(address, IT87_EXTENT); + release_region(isa_address, IT87_EXTENT); ERROR0: return err; } @@ -928,54 +1064,45 @@ static int it87_detach_client(struct i2c_client *client) int err; hwmon_device_unregister(data->class_dev); + sysfs_remove_group(&client->dev.kobj, &it87_group); + sysfs_remove_group(&client->dev.kobj, &it87_group_opt); if ((err = i2c_detach_client(client))) return err; - if(i2c_is_isa_client(client)) - release_region(client->addr, IT87_EXTENT); + release_region(client->addr, IT87_EXTENT); kfree(data); return 0; } -/* The SMBus locks itself, but ISA access must be locked explicitly! - We don't want to lock the whole ISA bus, so we lock each client - separately. +/* ISA access must be locked explicitly! We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks, would slow down the IT87 access and should not be necessary. */ static int it87_read_value(struct i2c_client *client, u8 reg) { struct it87_data *data = i2c_get_clientdata(client); - int res; - if (i2c_is_isa_client(client)) { - down(&data->lock); - outb_p(reg, client->addr + IT87_ADDR_REG_OFFSET); - res = inb_p(client->addr + IT87_DATA_REG_OFFSET); - up(&data->lock); - return res; - } else - return i2c_smbus_read_byte_data(client, reg); + + mutex_lock(&data->lock); + outb_p(reg, client->addr + IT87_ADDR_REG_OFFSET); + res = inb_p(client->addr + IT87_DATA_REG_OFFSET); + mutex_unlock(&data->lock); + + return res; } -/* The SMBus locks itself, but ISA access muse be locked explicitly! - We don't want to lock the whole ISA bus, so we lock each client - separately. +/* ISA access must be locked explicitly! We ignore the IT87 BUSY flag at this moment - it could lead to deadlocks, would slow down the IT87 access and should not be necessary. */ -static int it87_write_value(struct i2c_client *client, u8 reg, u8 value) +static void it87_write_value(struct i2c_client *client, u8 reg, u8 value) { struct it87_data *data = i2c_get_clientdata(client); - if (i2c_is_isa_client(client)) { - down(&data->lock); - outb_p(reg, client->addr + IT87_ADDR_REG_OFFSET); - outb_p(value, client->addr + IT87_DATA_REG_OFFSET); - up(&data->lock); - return 0; - } else - return i2c_smbus_write_byte_data(client, reg, value); + mutex_lock(&data->lock); + outb_p(reg, client->addr + IT87_ADDR_REG_OFFSET); + outb_p(value, client->addr + IT87_DATA_REG_OFFSET); + mutex_unlock(&data->lock); } /* Return 1 if and only if the PWM interface is safe to use */ @@ -1044,6 +1171,22 @@ static void it87_init_client(struct i2c_client *client, struct it87_data *data) data->manual_pwm_ctl[i] = 0xff; } + /* Some chips seem to have default value 0xff for all limit + * registers. For low voltage limits it makes no sense and triggers + * alarms, so change to 0 instead. For high temperature limits, it + * means -1 degree C, which surprisingly doesn't trigger an alarm, + * but is still confusing, so change to 127 degrees C. */ + for (i = 0; i < 8; i++) { + tmp = it87_read_value(client, IT87_REG_VIN_MIN(i)); + if (tmp == 0xff) + it87_write_value(client, IT87_REG_VIN_MIN(i), 0); + } + for (i = 0; i < 3; i++) { + tmp = it87_read_value(client, IT87_REG_TEMP_HIGH(i)); + if (tmp == 0xff) + it87_write_value(client, IT87_REG_TEMP_HIGH(i), 127); + } + /* Check if temperature channnels are reset manually or by some reason */ tmp = it87_read_value(client, IT87_REG_TEMP_ENABLE); if ((tmp & 0x3f) == 0) { @@ -1067,6 +1210,18 @@ static void it87_init_client(struct i2c_client *client, struct it87_data *data) data->fan_main_ctrl |= 0x70; it87_write_value(client, IT87_REG_FAN_MAIN_CTRL, data->fan_main_ctrl); } + data->has_fan = (data->fan_main_ctrl >> 4) & 0x07; + + /* Set tachometers to 16-bit mode if needed */ + if (data->type == it8716 || data->type == it8718) { + tmp = it87_read_value(client, IT87_REG_FAN_16BIT); + if (~tmp & 0x07 & data->has_fan) { + 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 */ @@ -1098,7 +1253,7 @@ static struct it87_data *it87_update_device(struct device *dev) struct it87_data *data = i2c_get_clientdata(client); int i; - down(&data->update_lock); + mutex_lock(&data->update_lock); if (time_after(jiffies, data->last_updated + HZ + HZ / 2) || !data->valid) { @@ -1117,18 +1272,26 @@ static struct it87_data *it87_update_device(struct device *dev) data->in_max[i] = it87_read_value(client, IT87_REG_VIN_MAX(i)); } + /* in8 (battery) has no limit registers */ data->in[8] = it87_read_value(client, IT87_REG_VIN(8)); - /* Temperature sensor doesn't have limit registers, set - to min and max value */ - data->in_min[8] = 0; - data->in_max[8] = 255; for (i = 0; i < 3; i++) { - data->fan[i] = - it87_read_value(client, IT87_REG_FAN(i)); + /* Skip disabled fans */ + if (!(data->has_fan & (1 << i))) + continue; + 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->type == it8718) { + 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] = @@ -1139,10 +1302,14 @@ 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->has_fan & 0x07) && data->type != it8716 + && data->type != it8718) { + 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) | @@ -1152,15 +1319,17 @@ 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; } - up(&data->update_lock); + mutex_unlock(&data->update_lock); return data; } @@ -1169,31 +1338,20 @@ static int __init sm_it87_init(void) { int res; - res = i2c_add_driver(&it87_driver); - if (res) + if ((res = it87_find(&isa_address))) return res; - - if (!it87_find(&isa_address)) { - res = i2c_isa_add_driver(&it87_isa_driver); - if (res) { - i2c_del_driver(&it87_driver); - return res; - } - } - - return 0; + return i2c_isa_add_driver(&it87_isa_driver); } static void __exit sm_it87_exit(void) { - if (isa_address) - i2c_isa_del_driver(&it87_isa_driver); - i2c_del_driver(&it87_driver); + i2c_isa_del_driver(&it87_isa_driver); } -MODULE_AUTHOR("Chris Gauthron "); -MODULE_DESCRIPTION("IT8705F, IT8712F, Sis950 driver"); +MODULE_AUTHOR("Chris Gauthron , " + "Jean Delvare "); +MODULE_DESCRIPTION("IT8705F/8712F/8716F/8718F, 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);