| /* |
| * it87.c - Part of lm_sensors, Linux kernel modules for hardware |
| * monitoring. |
| * |
| * The IT8705F is an LPC-based Super I/O part that contains UARTs, a |
| * parallel port, an IR port, a MIDI port, a floppy controller, etc., in |
| * addition to an Environment Controller (Enhanced Hardware Monitor and |
| * Fan Controller) |
| * |
| * This driver supports only the Environment Controller in the IT8705F and |
| * similar parts. The other devices are supported by different drivers. |
| * |
| * Supports: IT8705F Super I/O chip w/LPC interface |
| * IT8712F Super I/O chip w/LPC interface |
| * IT8716F Super I/O chip w/LPC interface |
| * IT8718F Super I/O chip w/LPC interface |
| * IT8720F Super I/O chip w/LPC interface |
| * IT8726F Super I/O chip w/LPC interface |
| * Sis950 A clone of the IT8705F |
| * |
| * Copyright (C) 2001 Chris Gauthron |
| * Copyright (C) 2005-2010 Jean Delvare <khali@linux-fr.org> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/slab.h> |
| #include <linux/jiffies.h> |
| #include <linux/platform_device.h> |
| #include <linux/hwmon.h> |
| #include <linux/hwmon-sysfs.h> |
| #include <linux/hwmon-vid.h> |
| #include <linux/err.h> |
| #include <linux/mutex.h> |
| #include <linux/sysfs.h> |
| #include <linux/string.h> |
| #include <linux/dmi.h> |
| #include <linux/acpi.h> |
| #include <linux/io.h> |
| |
| #define DRVNAME "it87" |
| |
| enum chips { it87, it8712, it8716, it8718, it8720 }; |
| |
| static unsigned short force_id; |
| module_param(force_id, ushort, 0); |
| MODULE_PARM_DESC(force_id, "Override the detected device ID"); |
| |
| static struct platform_device *pdev; |
| |
| #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 */ |
| |
| /* The device with the IT8718F/IT8720F VID value in it */ |
| #define GPIO 0x07 |
| |
| #define DEVID 0x20 /* Register: Device ID */ |
| #define DEVREV 0x22 /* Register: Device Revision */ |
| |
| static inline int |
| superio_inb(int reg) |
| { |
| outb(reg, REG); |
| return inb(VAL); |
| } |
| |
| static int superio_inw(int reg) |
| { |
| int val; |
| outb(reg++, REG); |
| val = inb(VAL) << 8; |
| outb(reg, REG); |
| val |= inb(VAL); |
| return val; |
| } |
| |
| static inline void |
| superio_select(int ldn) |
| { |
| outb(DEV, REG); |
| outb(ldn, VAL); |
| } |
| |
| static inline void |
| superio_enter(void) |
| { |
| outb(0x87, REG); |
| outb(0x01, REG); |
| outb(0x55, REG); |
| outb(0x55, REG); |
| } |
| |
| static inline void |
| superio_exit(void) |
| { |
| outb(0x02, REG); |
| outb(0x02, VAL); |
| } |
| |
| /* Logical device 4 registers */ |
| #define IT8712F_DEVID 0x8712 |
| #define IT8705F_DEVID 0x8705 |
| #define IT8716F_DEVID 0x8716 |
| #define IT8718F_DEVID 0x8718 |
| #define IT8720F_DEVID 0x8720 |
| #define IT8726F_DEVID 0x8726 |
| #define IT87_ACT_REG 0x30 |
| #define IT87_BASE_REG 0x60 |
| |
| /* Logical device 7 registers (IT8712F and later) */ |
| #define IT87_SIO_GPIO3_REG 0x27 |
| #define IT87_SIO_GPIO5_REG 0x29 |
| #define IT87_SIO_PINX2_REG 0x2c /* Pin selection */ |
| #define IT87_SIO_VID_REG 0xfc /* VID value */ |
| #define IT87_SIO_BEEP_PIN_REG 0xf6 /* Beep pin mapping */ |
| |
| /* 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; |
| |
| /* Many IT87 constants specified below */ |
| |
| /* Length of ISA address segment */ |
| #define IT87_EXTENT 8 |
| |
| /* Length of ISA address segment for Environmental Controller */ |
| #define IT87_EC_EXTENT 2 |
| |
| /* Offset of EC registers from ISA base address */ |
| #define IT87_EC_OFFSET 5 |
| |
| /* Where are the ISA address/data registers relative to the EC base address */ |
| #define IT87_ADDR_REG_OFFSET 0 |
| #define IT87_DATA_REG_OFFSET 1 |
| |
| /*----- The IT87 registers -----*/ |
| |
| #define IT87_REG_CONFIG 0x00 |
| |
| #define IT87_REG_ALARM1 0x01 |
| #define IT87_REG_ALARM2 0x02 |
| #define IT87_REG_ALARM3 0x03 |
| |
| /* The IT8718F and IT8720F have the VID value in a different register, in |
| Super-I/O configuration space. */ |
| #define IT87_REG_VID 0x0a |
| /* The IT8705F and IT8712F earlier than revision 0x08 use register 0x0b |
| for fan divisors. Later IT8712F revisions must use 16-bit tachometer |
| mode. */ |
| #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) */ |
| |
| static const u8 IT87_REG_FAN[] = { 0x0d, 0x0e, 0x0f, 0x80, 0x82 }; |
| static const u8 IT87_REG_FAN_MIN[] = { 0x10, 0x11, 0x12, 0x84, 0x86 }; |
| static const u8 IT87_REG_FANX[] = { 0x18, 0x19, 0x1a, 0x81, 0x83 }; |
| static const u8 IT87_REG_FANX_MIN[] = { 0x1b, 0x1c, 0x1d, 0x85, 0x87 }; |
| #define IT87_REG_FAN_MAIN_CTRL 0x13 |
| #define IT87_REG_FAN_CTL 0x14 |
| #define IT87_REG_PWM(nr) (0x15 + (nr)) |
| |
| #define IT87_REG_VIN(nr) (0x20 + (nr)) |
| #define IT87_REG_TEMP(nr) (0x29 + (nr)) |
| |
| #define IT87_REG_VIN_MAX(nr) (0x30 + (nr) * 2) |
| #define IT87_REG_VIN_MIN(nr) (0x31 + (nr) * 2) |
| #define IT87_REG_TEMP_HIGH(nr) (0x40 + (nr) * 2) |
| #define IT87_REG_TEMP_LOW(nr) (0x41 + (nr) * 2) |
| |
| #define IT87_REG_VIN_ENABLE 0x50 |
| #define IT87_REG_TEMP_ENABLE 0x51 |
| #define IT87_REG_BEEP_ENABLE 0x5c |
| |
| #define IT87_REG_CHIPID 0x58 |
| |
| #define IT87_REG_AUTO_TEMP(nr, i) (0x60 + (nr) * 8 + (i)) |
| #define IT87_REG_AUTO_PWM(nr, i) (0x65 + (nr) * 8 + (i)) |
| |
| #define IN_TO_REG(val) (SENSORS_LIMIT((((val) + 8)/16),0,255)) |
| #define IN_FROM_REG(val) ((val) * 16) |
| |
| static inline u8 FAN_TO_REG(long rpm, int div) |
| { |
| if (rpm == 0) |
| return 255; |
| rpm = SENSORS_LIMIT(rpm, 1, 1000000); |
| return SENSORS_LIMIT((1350000 + rpm * div / 2) / (rpm * div), 1, |
| 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)) |
| #define TEMP_FROM_REG(val) ((val) * 1000) |
| |
| #define PWM_TO_REG(val) ((val) >> 1) |
| #define PWM_FROM_REG(val) (((val)&0x7f) << 1) |
| |
| static int DIV_TO_REG(int val) |
| { |
| int answer = 0; |
| while (answer < 7 && (val >>= 1)) |
| answer++; |
| return answer; |
| } |
| #define DIV_FROM_REG(val) (1 << (val)) |
| |
| static const unsigned int pwm_freq[8] = { |
| 48000000 / 128, |
| 24000000 / 128, |
| 12000000 / 128, |
| 8000000 / 128, |
| 6000000 / 128, |
| 3000000 / 128, |
| 1500000 / 128, |
| 750000 / 128, |
| }; |
| |
| |
| struct it87_sio_data { |
| enum chips type; |
| /* Values read from Super-I/O config space */ |
| u8 revision; |
| u8 vid_value; |
| u8 beep_pin; |
| /* Features skipped based on config or DMI */ |
| u8 skip_vid; |
| u8 skip_fan; |
| u8 skip_pwm; |
| }; |
| |
| /* For each registered chip, we need to keep some data in memory. |
| The structure is dynamically allocated. */ |
| struct it87_data { |
| struct device *hwmon_dev; |
| enum chips type; |
| u8 revision; |
| |
| unsigned short addr; |
| const char *name; |
| 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[8]; /* Register value */ |
| u8 in_min[8]; /* Register value */ |
| u8 has_fan; /* Bitfield, fans enabled */ |
| u16 fan[5]; /* Register values, possibly combined */ |
| u16 fan_min[5]; /* Register values, possibly combined */ |
| s8 temp[3]; /* Register value */ |
| s8 temp_high[3]; /* Register value */ |
| s8 temp_low[3]; /* Register value */ |
| u8 sensor; /* Register value */ |
| u8 fan_div[3]; /* Register encoding, shifted right */ |
| u8 vid; /* Register encoding, combined */ |
| u8 vrm; |
| u32 alarms; /* Register encoding, combined */ |
| u8 beeps; /* Register encoding */ |
| u8 fan_main_ctrl; /* Register value */ |
| u8 fan_ctl; /* Register value */ |
| |
| /* The following 3 arrays correspond to the same registers. The |
| * meaning of bits 6-0 depends on the value of bit 7, and we want |
| * to preserve settings on mode changes, so we have to track all |
| * values separately. */ |
| u8 pwm_ctrl[3]; /* Register value */ |
| u8 pwm_duty[3]; /* Manual PWM value set by user (bit 6-0) */ |
| u8 pwm_temp_map[3]; /* PWM to temp. chan. mapping (bits 1-0) */ |
| |
| /* Automatic fan speed control registers */ |
| u8 auto_pwm[3][4]; /* [nr][3] is hard-coded */ |
| s8 auto_temp[3][5]; /* [nr][0] is point1_temp_hyst */ |
| }; |
| |
| static inline int has_16bit_fans(const struct it87_data *data) |
| { |
| /* IT8705F Datasheet 0.4.1, 3h == Version G. |
| IT8712F Datasheet 0.9.1, section 8.3.5 indicates 8h == Version J. |
| These are the first revisions with 16bit tachometer support. */ |
| return (data->type == it87 && data->revision >= 0x03) |
| || (data->type == it8712 && data->revision >= 0x08) |
| || data->type == it8716 |
| || data->type == it8718 |
| || data->type == it8720; |
| } |
| |
| static inline int has_old_autopwm(const struct it87_data *data) |
| { |
| /* The old automatic fan speed control interface is implemented |
| by IT8705F chips up to revision F and IT8712F chips up to |
| revision G. */ |
| return (data->type == it87 && data->revision < 0x03) |
| || (data->type == it8712 && data->revision < 0x08); |
| } |
| |
| static int it87_probe(struct platform_device *pdev); |
| static int __devexit it87_remove(struct platform_device *pdev); |
| |
| static int it87_read_value(struct it87_data *data, u8 reg); |
| static void it87_write_value(struct it87_data *data, u8 reg, u8 value); |
| static struct it87_data *it87_update_device(struct device *dev); |
| static int it87_check_pwm(struct device *dev); |
| static void it87_init_device(struct platform_device *pdev); |
| |
| |
| static struct platform_driver it87_driver = { |
| .driver = { |
| .owner = THIS_MODULE, |
| .name = DRVNAME, |
| }, |
| .probe = it87_probe, |
| .remove = __devexit_p(it87_remove), |
| }; |
| |
| static ssize_t show_in(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", IN_FROM_REG(data->in[nr])); |
| } |
| |
| static ssize_t show_in_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", IN_FROM_REG(data->in_min[nr])); |
| } |
| |
| static ssize_t show_in_max(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", IN_FROM_REG(data->in_max[nr])); |
| } |
| |
| static ssize_t set_in_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 it87_data *data = dev_get_drvdata(dev); |
| unsigned long val; |
| |
| if (strict_strtoul(buf, 10, &val) < 0) |
| return -EINVAL; |
| |
| mutex_lock(&data->update_lock); |
| data->in_min[nr] = IN_TO_REG(val); |
| it87_write_value(data, IT87_REG_VIN_MIN(nr), |
| data->in_min[nr]); |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| static ssize_t set_in_max(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 it87_data *data = dev_get_drvdata(dev); |
| unsigned long val; |
| |
| if (strict_strtoul(buf, 10, &val) < 0) |
| return -EINVAL; |
| |
| mutex_lock(&data->update_lock); |
| data->in_max[nr] = IN_TO_REG(val); |
| it87_write_value(data, IT87_REG_VIN_MAX(nr), |
| data->in_max[nr]); |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| |
| #define show_in_offset(offset) \ |
| static SENSOR_DEVICE_ATTR(in##offset##_input, S_IRUGO, \ |
| show_in, NULL, offset); |
| |
| #define limit_in_offset(offset) \ |
| static SENSOR_DEVICE_ATTR(in##offset##_min, S_IRUGO | S_IWUSR, \ |
| show_in_min, set_in_min, offset); \ |
| static SENSOR_DEVICE_ATTR(in##offset##_max, S_IRUGO | S_IWUSR, \ |
| show_in_max, set_in_max, offset); |
| |
| show_in_offset(0); |
| limit_in_offset(0); |
| show_in_offset(1); |
| limit_in_offset(1); |
| show_in_offset(2); |
| limit_in_offset(2); |
| show_in_offset(3); |
| limit_in_offset(3); |
| show_in_offset(4); |
| limit_in_offset(4); |
| show_in_offset(5); |
| limit_in_offset(5); |
| show_in_offset(6); |
| limit_in_offset(6); |
| show_in_offset(7); |
| limit_in_offset(7); |
| show_in_offset(8); |
| |
| /* 3 temperatures */ |
| static ssize_t show_temp(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", TEMP_FROM_REG(data->temp[nr])); |
| } |
| static ssize_t show_temp_max(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", TEMP_FROM_REG(data->temp_high[nr])); |
| } |
| static ssize_t show_temp_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", TEMP_FROM_REG(data->temp_low[nr])); |
| } |
| static ssize_t set_temp_max(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 it87_data *data = dev_get_drvdata(dev); |
| long val; |
| |
| if (strict_strtol(buf, 10, &val) < 0) |
| return -EINVAL; |
| |
| mutex_lock(&data->update_lock); |
| data->temp_high[nr] = TEMP_TO_REG(val); |
| it87_write_value(data, IT87_REG_TEMP_HIGH(nr), data->temp_high[nr]); |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| static ssize_t set_temp_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 it87_data *data = dev_get_drvdata(dev); |
| long val; |
| |
| if (strict_strtol(buf, 10, &val) < 0) |
| return -EINVAL; |
| |
| mutex_lock(&data->update_lock); |
| data->temp_low[nr] = TEMP_TO_REG(val); |
| it87_write_value(data, IT87_REG_TEMP_LOW(nr), data->temp_low[nr]); |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| #define show_temp_offset(offset) \ |
| static SENSOR_DEVICE_ATTR(temp##offset##_input, S_IRUGO, \ |
| show_temp, NULL, offset - 1); \ |
| static SENSOR_DEVICE_ATTR(temp##offset##_max, S_IRUGO | S_IWUSR, \ |
| show_temp_max, set_temp_max, offset - 1); \ |
| static SENSOR_DEVICE_ATTR(temp##offset##_min, S_IRUGO | S_IWUSR, \ |
| show_temp_min, set_temp_min, offset - 1); |
| |
| show_temp_offset(1); |
| show_temp_offset(2); |
| show_temp_offset(3); |
| |
| static ssize_t show_sensor(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); |
| u8 reg = data->sensor; /* In case the value is updated while |
| we use it */ |
| |
| if (reg & (1 << nr)) |
| return sprintf(buf, "3\n"); /* thermal diode */ |
| if (reg & (8 << nr)) |
| return sprintf(buf, "4\n"); /* thermistor */ |
| return sprintf(buf, "0\n"); /* disabled */ |
| } |
| static ssize_t set_sensor(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 it87_data *data = dev_get_drvdata(dev); |
| long val; |
| u8 reg; |
| |
| if (strict_strtol(buf, 10, &val) < 0) |
| return -EINVAL; |
| |
| reg = it87_read_value(data, IT87_REG_TEMP_ENABLE); |
| reg &= ~(1 << nr); |
| reg &= ~(8 << nr); |
| if (val == 2) { /* backwards compatibility */ |
| dev_warn(dev, "Sensor type 2 is deprecated, please use 4 " |
| "instead\n"); |
| val = 4; |
| } |
| /* 3 = thermal diode; 4 = thermistor; 0 = disabled */ |
| if (val == 3) |
| reg |= 1 << nr; |
| else if (val == 4) |
| reg |= 8 << nr; |
| else if (val != 0) |
| return -EINVAL; |
| |
| mutex_lock(&data->update_lock); |
| data->sensor = reg; |
| it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor); |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| #define show_sensor_offset(offset) \ |
| static SENSOR_DEVICE_ATTR(temp##offset##_type, S_IRUGO | S_IWUSR, \ |
| show_sensor, set_sensor, offset - 1); |
| |
| show_sensor_offset(1); |
| show_sensor_offset(2); |
| show_sensor_offset(3); |
| |
| /* 3 Fans */ |
| |
| static int pwm_mode(const struct it87_data *data, int nr) |
| { |
| int ctrl = data->fan_main_ctrl & (1 << nr); |
| |
| if (ctrl == 0) /* Full speed */ |
| return 0; |
| if (data->pwm_ctrl[nr] & 0x80) /* Automatic mode */ |
| return 2; |
| else /* Manual mode */ |
| return 1; |
| } |
| |
| static ssize_t show_fan(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", FAN_FROM_REG(data->fan[nr], |
| DIV_FROM_REG(data->fan_div[nr]))); |
| } |
| static ssize_t show_fan_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", FAN_FROM_REG(data->fan_min[nr], |
| DIV_FROM_REG(data->fan_div[nr]))); |
| } |
| static ssize_t show_fan_div(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", DIV_FROM_REG(data->fan_div[nr])); |
| } |
| static ssize_t show_pwm_enable(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", pwm_mode(data, nr)); |
| } |
| static ssize_t show_pwm(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", PWM_FROM_REG(data->pwm_duty[nr])); |
| } |
| static ssize_t show_pwm_freq(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| struct it87_data *data = it87_update_device(dev); |
| int index = (data->fan_ctl >> 4) & 0x07; |
| |
| return sprintf(buf, "%u\n", pwm_freq[index]); |
| } |
| static ssize_t set_fan_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 it87_data *data = dev_get_drvdata(dev); |
| long val; |
| u8 reg; |
| |
| if (strict_strtol(buf, 10, &val) < 0) |
| return -EINVAL; |
| |
| mutex_lock(&data->update_lock); |
| reg = it87_read_value(data, IT87_REG_FAN_DIV); |
| switch (nr) { |
| case 0: |
| data->fan_div[nr] = reg & 0x07; |
| break; |
| case 1: |
| data->fan_div[nr] = (reg >> 3) & 0x07; |
| break; |
| case 2: |
| data->fan_div[nr] = (reg & 0x40) ? 3 : 1; |
| break; |
| } |
| |
| data->fan_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); |
| it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan_min[nr]); |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| static ssize_t set_fan_div(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 it87_data *data = dev_get_drvdata(dev); |
| unsigned long val; |
| int min; |
| u8 old; |
| |
| if (strict_strtoul(buf, 10, &val) < 0) |
| return -EINVAL; |
| |
| mutex_lock(&data->update_lock); |
| old = it87_read_value(data, IT87_REG_FAN_DIV); |
| |
| /* Save fan min limit */ |
| min = FAN_FROM_REG(data->fan_min[nr], DIV_FROM_REG(data->fan_div[nr])); |
| |
| switch (nr) { |
| case 0: |
| case 1: |
| data->fan_div[nr] = DIV_TO_REG(val); |
| break; |
| case 2: |
| if (val < 8) |
| data->fan_div[nr] = 1; |
| else |
| data->fan_div[nr] = 3; |
| } |
| val = old & 0x80; |
| val |= (data->fan_div[0] & 0x07); |
| val |= (data->fan_div[1] & 0x07) << 3; |
| if (data->fan_div[2] == 3) |
| val |= 0x1 << 6; |
| it87_write_value(data, IT87_REG_FAN_DIV, val); |
| |
| /* Restore fan min limit */ |
| data->fan_min[nr] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); |
| it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan_min[nr]); |
| |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| |
| /* Returns 0 if OK, -EINVAL otherwise */ |
| static int check_trip_points(struct device *dev, int nr) |
| { |
| const struct it87_data *data = dev_get_drvdata(dev); |
| int i, err = 0; |
| |
| if (has_old_autopwm(data)) { |
| for (i = 0; i < 3; i++) { |
| if (data->auto_temp[nr][i] > data->auto_temp[nr][i + 1]) |
| err = -EINVAL; |
| } |
| for (i = 0; i < 2; i++) { |
| if (data->auto_pwm[nr][i] > data->auto_pwm[nr][i + 1]) |
| err = -EINVAL; |
| } |
| } |
| |
| if (err) { |
| dev_err(dev, "Inconsistent trip points, not switching to " |
| "automatic mode\n"); |
| dev_err(dev, "Adjust the trip points and try again\n"); |
| } |
| return err; |
| } |
| |
| static ssize_t set_pwm_enable(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 it87_data *data = dev_get_drvdata(dev); |
| long val; |
| |
| if (strict_strtol(buf, 10, &val) < 0 || val < 0 || val > 2) |
| return -EINVAL; |
| |
| /* Check trip points before switching to automatic mode */ |
| if (val == 2) { |
| if (check_trip_points(dev, nr) < 0) |
| return -EINVAL; |
| } |
| |
| mutex_lock(&data->update_lock); |
| |
| if (val == 0) { |
| int tmp; |
| /* make sure the fan is on when in on/off mode */ |
| tmp = it87_read_value(data, IT87_REG_FAN_CTL); |
| it87_write_value(data, IT87_REG_FAN_CTL, tmp | (1 << nr)); |
| /* set on/off mode */ |
| data->fan_main_ctrl &= ~(1 << nr); |
| it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, |
| data->fan_main_ctrl); |
| } else { |
| if (val == 1) /* Manual mode */ |
| data->pwm_ctrl[nr] = data->pwm_duty[nr]; |
| else /* Automatic mode */ |
| data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr]; |
| it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]); |
| /* set SmartGuardian mode */ |
| data->fan_main_ctrl |= (1 << nr); |
| it87_write_value(data, IT87_REG_FAN_MAIN_CTRL, |
| data->fan_main_ctrl); |
| } |
| |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| static ssize_t set_pwm(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); |
| int nr = sensor_attr->index; |
| |
| struct it87_data *data = dev_get_drvdata(dev); |
| long val; |
| |
| if (strict_strtol(buf, 10, &val) < 0 || val < 0 || val > 255) |
| return -EINVAL; |
| |
| mutex_lock(&data->update_lock); |
| data->pwm_duty[nr] = PWM_TO_REG(val); |
| /* If we are in manual mode, write the duty cycle immediately; |
| * otherwise, just store it for later use. */ |
| if (!(data->pwm_ctrl[nr] & 0x80)) { |
| data->pwm_ctrl[nr] = data->pwm_duty[nr]; |
| it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]); |
| } |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| static ssize_t set_pwm_freq(struct device *dev, |
| struct device_attribute *attr, const char *buf, size_t count) |
| { |
| struct it87_data *data = dev_get_drvdata(dev); |
| unsigned long val; |
| int i; |
| |
| if (strict_strtoul(buf, 10, &val) < 0) |
| return -EINVAL; |
| |
| /* Search for the nearest available frequency */ |
| for (i = 0; i < 7; i++) { |
| if (val > (pwm_freq[i] + pwm_freq[i+1]) / 2) |
| break; |
| } |
| |
| mutex_lock(&data->update_lock); |
| data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL) & 0x8f; |
| data->fan_ctl |= i << 4; |
| it87_write_value(data, IT87_REG_FAN_CTL, data->fan_ctl); |
| mutex_unlock(&data->update_lock); |
| |
| return count; |
| } |
| static ssize_t show_pwm_temp_map(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); |
| int map; |
| |
| if (data->pwm_temp_map[nr] < 3) |
| map = 1 << data->pwm_temp_map[nr]; |
| else |
| map = 0; /* Should never happen */ |
| return sprintf(buf, "%d\n", map); |
| } |
| static ssize_t set_pwm_temp_map(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 it87_data *data = dev_get_drvdata(dev); |
| long val; |
| u8 reg; |
| |
| /* This check can go away if we ever support automatic fan speed |
| control on newer chips. */ |
| if (!has_old_autopwm(data)) { |
| dev_notice(dev, "Mapping change disabled for safety reasons\n"); |
| return -EINVAL; |
| } |
| |
| if (strict_strtol(buf, 10, &val) < 0) |
| return -EINVAL; |
| |
| switch (val) { |
| case (1 << 0): |
| reg = 0x00; |
| break; |
| case (1 << 1): |
| reg = 0x01; |
| break; |
| case (1 << 2): |
| reg = 0x02; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| mutex_lock(&data->update_lock); |
| data->pwm_temp_map[nr] = reg; |
| /* If we are in automatic mode, write the temp mapping immediately; |
| * otherwise, just store it for later use. */ |
| if (data->pwm_ctrl[nr] & 0x80) { |
| data->pwm_ctrl[nr] = 0x80 | data->pwm_temp_map[nr]; |
| it87_write_value(data, IT87_REG_PWM(nr), data->pwm_ctrl[nr]); |
| } |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| |
| static ssize_t show_auto_pwm(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct it87_data *data = it87_update_device(dev); |
| struct sensor_device_attribute_2 *sensor_attr = |
| to_sensor_dev_attr_2(attr); |
| int nr = sensor_attr->nr; |
| int point = sensor_attr->index; |
| |
| return sprintf(buf, "%d\n", PWM_FROM_REG(data->auto_pwm[nr][point])); |
| } |
| |
| static ssize_t set_auto_pwm(struct device *dev, |
| struct device_attribute *attr, const char *buf, size_t count) |
| { |
| struct it87_data *data = dev_get_drvdata(dev); |
| struct sensor_device_attribute_2 *sensor_attr = |
| to_sensor_dev_attr_2(attr); |
| int nr = sensor_attr->nr; |
| int point = sensor_attr->index; |
| long val; |
| |
| if (strict_strtol(buf, 10, &val) < 0 || val < 0 || val > 255) |
| return -EINVAL; |
| |
| mutex_lock(&data->update_lock); |
| data->auto_pwm[nr][point] = PWM_TO_REG(val); |
| it87_write_value(data, IT87_REG_AUTO_PWM(nr, point), |
| data->auto_pwm[nr][point]); |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| |
| static ssize_t show_auto_temp(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct it87_data *data = it87_update_device(dev); |
| struct sensor_device_attribute_2 *sensor_attr = |
| to_sensor_dev_attr_2(attr); |
| int nr = sensor_attr->nr; |
| int point = sensor_attr->index; |
| |
| return sprintf(buf, "%d\n", TEMP_FROM_REG(data->auto_temp[nr][point])); |
| } |
| |
| static ssize_t set_auto_temp(struct device *dev, |
| struct device_attribute *attr, const char *buf, size_t count) |
| { |
| struct it87_data *data = dev_get_drvdata(dev); |
| struct sensor_device_attribute_2 *sensor_attr = |
| to_sensor_dev_attr_2(attr); |
| int nr = sensor_attr->nr; |
| int point = sensor_attr->index; |
| long val; |
| |
| if (strict_strtol(buf, 10, &val) < 0 || val < -128000 || val > 127000) |
| return -EINVAL; |
| |
| mutex_lock(&data->update_lock); |
| data->auto_temp[nr][point] = TEMP_TO_REG(val); |
| it87_write_value(data, IT87_REG_AUTO_TEMP(nr, point), |
| data->auto_temp[nr][point]); |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| |
| #define show_fan_offset(offset) \ |
| static SENSOR_DEVICE_ATTR(fan##offset##_input, S_IRUGO, \ |
| show_fan, NULL, offset - 1); \ |
| static SENSOR_DEVICE_ATTR(fan##offset##_min, S_IRUGO | S_IWUSR, \ |
| show_fan_min, set_fan_min, offset - 1); \ |
| static SENSOR_DEVICE_ATTR(fan##offset##_div, S_IRUGO | S_IWUSR, \ |
| show_fan_div, set_fan_div, offset - 1); |
| |
| show_fan_offset(1); |
| show_fan_offset(2); |
| show_fan_offset(3); |
| |
| #define show_pwm_offset(offset) \ |
| static SENSOR_DEVICE_ATTR(pwm##offset##_enable, S_IRUGO | S_IWUSR, \ |
| show_pwm_enable, set_pwm_enable, offset - 1); \ |
| static SENSOR_DEVICE_ATTR(pwm##offset, S_IRUGO | S_IWUSR, \ |
| show_pwm, set_pwm, offset - 1); \ |
| static DEVICE_ATTR(pwm##offset##_freq, \ |
| (offset == 1 ? S_IRUGO | S_IWUSR : S_IRUGO), \ |
| show_pwm_freq, (offset == 1 ? set_pwm_freq : NULL)); \ |
| static SENSOR_DEVICE_ATTR(pwm##offset##_auto_channels_temp, \ |
| S_IRUGO | S_IWUSR, show_pwm_temp_map, set_pwm_temp_map, \ |
| offset - 1); \ |
| static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point1_pwm, \ |
| S_IRUGO | S_IWUSR, show_auto_pwm, set_auto_pwm, \ |
| offset - 1, 0); \ |
| static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point2_pwm, \ |
| S_IRUGO | S_IWUSR, show_auto_pwm, set_auto_pwm, \ |
| offset - 1, 1); \ |
| static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point3_pwm, \ |
| S_IRUGO | S_IWUSR, show_auto_pwm, set_auto_pwm, \ |
| offset - 1, 2); \ |
| static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point4_pwm, \ |
| S_IRUGO, show_auto_pwm, NULL, offset - 1, 3); \ |
| static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point1_temp, \ |
| S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \ |
| offset - 1, 1); \ |
| static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point1_temp_hyst, \ |
| S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \ |
| offset - 1, 0); \ |
| static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point2_temp, \ |
| S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \ |
| offset - 1, 2); \ |
| static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point3_temp, \ |
| S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \ |
| offset - 1, 3); \ |
| static SENSOR_DEVICE_ATTR_2(pwm##offset##_auto_point4_temp, \ |
| S_IRUGO | S_IWUSR, show_auto_temp, set_auto_temp, \ |
| offset - 1, 4); |
| |
| 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 it87_data *data = dev_get_drvdata(dev); |
| long val; |
| |
| if (strict_strtol(buf, 10, &val) < 0) |
| return -EINVAL; |
| |
| mutex_lock(&data->update_lock); |
| data->fan_min[nr] = FAN16_TO_REG(val); |
| it87_write_value(data, IT87_REG_FAN_MIN[nr], |
| data->fan_min[nr] & 0xff); |
| it87_write_value(data, 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); |
| show_fan16_offset(4); |
| show_fan16_offset(5); |
| |
| /* Alarms */ |
| static ssize_t show_alarms(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| struct it87_data *data = it87_update_device(dev); |
| return sprintf(buf, "%u\n", data->alarms); |
| } |
| static DEVICE_ATTR(alarms, S_IRUGO, show_alarms, NULL); |
| |
| static ssize_t show_alarm(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| int bitnr = to_sensor_dev_attr(attr)->index; |
| struct it87_data *data = it87_update_device(dev); |
| return sprintf(buf, "%u\n", (data->alarms >> bitnr) & 1); |
| } |
| static SENSOR_DEVICE_ATTR(in0_alarm, S_IRUGO, show_alarm, NULL, 8); |
| static SENSOR_DEVICE_ATTR(in1_alarm, S_IRUGO, show_alarm, NULL, 9); |
| static SENSOR_DEVICE_ATTR(in2_alarm, S_IRUGO, show_alarm, NULL, 10); |
| static SENSOR_DEVICE_ATTR(in3_alarm, S_IRUGO, show_alarm, NULL, 11); |
| static SENSOR_DEVICE_ATTR(in4_alarm, S_IRUGO, show_alarm, NULL, 12); |
| static SENSOR_DEVICE_ATTR(in5_alarm, S_IRUGO, show_alarm, NULL, 13); |
| static SENSOR_DEVICE_ATTR(in6_alarm, S_IRUGO, show_alarm, NULL, 14); |
| static SENSOR_DEVICE_ATTR(in7_alarm, S_IRUGO, show_alarm, NULL, 15); |
| static SENSOR_DEVICE_ATTR(fan1_alarm, S_IRUGO, show_alarm, NULL, 0); |
| static SENSOR_DEVICE_ATTR(fan2_alarm, S_IRUGO, show_alarm, NULL, 1); |
| static SENSOR_DEVICE_ATTR(fan3_alarm, S_IRUGO, show_alarm, NULL, 2); |
| static SENSOR_DEVICE_ATTR(fan4_alarm, S_IRUGO, show_alarm, NULL, 3); |
| static SENSOR_DEVICE_ATTR(fan5_alarm, S_IRUGO, show_alarm, NULL, 6); |
| static SENSOR_DEVICE_ATTR(temp1_alarm, S_IRUGO, show_alarm, NULL, 16); |
| static SENSOR_DEVICE_ATTR(temp2_alarm, S_IRUGO, show_alarm, NULL, 17); |
| static SENSOR_DEVICE_ATTR(temp3_alarm, S_IRUGO, show_alarm, NULL, 18); |
| |
| static ssize_t show_beep(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| int bitnr = to_sensor_dev_attr(attr)->index; |
| struct it87_data *data = it87_update_device(dev); |
| return sprintf(buf, "%u\n", (data->beeps >> bitnr) & 1); |
| } |
| static ssize_t set_beep(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| int bitnr = to_sensor_dev_attr(attr)->index; |
| struct it87_data *data = dev_get_drvdata(dev); |
| long val; |
| |
| if (strict_strtol(buf, 10, &val) < 0 |
| || (val != 0 && val != 1)) |
| return -EINVAL; |
| |
| mutex_lock(&data->update_lock); |
| data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE); |
| if (val) |
| data->beeps |= (1 << bitnr); |
| else |
| data->beeps &= ~(1 << bitnr); |
| it87_write_value(data, IT87_REG_BEEP_ENABLE, data->beeps); |
| mutex_unlock(&data->update_lock); |
| return count; |
| } |
| |
| static SENSOR_DEVICE_ATTR(in0_beep, S_IRUGO | S_IWUSR, |
| show_beep, set_beep, 1); |
| static SENSOR_DEVICE_ATTR(in1_beep, S_IRUGO, show_beep, NULL, 1); |
| static SENSOR_DEVICE_ATTR(in2_beep, S_IRUGO, show_beep, NULL, 1); |
| static SENSOR_DEVICE_ATTR(in3_beep, S_IRUGO, show_beep, NULL, 1); |
| static SENSOR_DEVICE_ATTR(in4_beep, S_IRUGO, show_beep, NULL, 1); |
| static SENSOR_DEVICE_ATTR(in5_beep, S_IRUGO, show_beep, NULL, 1); |
| static SENSOR_DEVICE_ATTR(in6_beep, S_IRUGO, show_beep, NULL, 1); |
| static SENSOR_DEVICE_ATTR(in7_beep, S_IRUGO, show_beep, NULL, 1); |
| /* fanX_beep writability is set later */ |
| static SENSOR_DEVICE_ATTR(fan1_beep, S_IRUGO, show_beep, set_beep, 0); |
| static SENSOR_DEVICE_ATTR(fan2_beep, S_IRUGO, show_beep, set_beep, 0); |
| static SENSOR_DEVICE_ATTR(fan3_beep, S_IRUGO, show_beep, set_beep, 0); |
| static SENSOR_DEVICE_ATTR(fan4_beep, S_IRUGO, show_beep, set_beep, 0); |
| static SENSOR_DEVICE_ATTR(fan5_beep, S_IRUGO, show_beep, set_beep, 0); |
| static SENSOR_DEVICE_ATTR(temp1_beep, S_IRUGO | S_IWUSR, |
| show_beep, set_beep, 2); |
| static SENSOR_DEVICE_ATTR(temp2_beep, S_IRUGO, show_beep, NULL, 2); |
| static SENSOR_DEVICE_ATTR(temp3_beep, S_IRUGO, show_beep, NULL, 2); |
| |
| static ssize_t show_vrm_reg(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| struct it87_data *data = dev_get_drvdata(dev); |
| return sprintf(buf, "%u\n", data->vrm); |
| } |
| static ssize_t store_vrm_reg(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct it87_data *data = dev_get_drvdata(dev); |
| unsigned long val; |
| |
| if (strict_strtoul(buf, 10, &val) < 0) |
| return -EINVAL; |
| |
| data->vrm = val; |
| |
| return count; |
| } |
| static DEVICE_ATTR(vrm, S_IRUGO | S_IWUSR, show_vrm_reg, store_vrm_reg); |
| |
| static ssize_t show_vid_reg(struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| struct it87_data *data = it87_update_device(dev); |
| return sprintf(buf, "%ld\n", (long) vid_from_reg(data->vid, data->vrm)); |
| } |
| static DEVICE_ATTR(cpu0_vid, S_IRUGO, show_vid_reg, NULL); |
| |
| static ssize_t show_name(struct device *dev, struct device_attribute |
| *devattr, char *buf) |
| { |
| struct it87_data *data = dev_get_drvdata(dev); |
| return sprintf(buf, "%s\n", data->name); |
| } |
| static DEVICE_ATTR(name, S_IRUGO, show_name, NULL); |
| |
| 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_in0_alarm.dev_attr.attr, |
| &sensor_dev_attr_in1_alarm.dev_attr.attr, |
| &sensor_dev_attr_in2_alarm.dev_attr.attr, |
| &sensor_dev_attr_in3_alarm.dev_attr.attr, |
| &sensor_dev_attr_in4_alarm.dev_attr.attr, |
| &sensor_dev_attr_in5_alarm.dev_attr.attr, |
| &sensor_dev_attr_in6_alarm.dev_attr.attr, |
| &sensor_dev_attr_in7_alarm.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, |
| &sensor_dev_attr_temp1_alarm.dev_attr.attr, |
| &sensor_dev_attr_temp2_alarm.dev_attr.attr, |
| &sensor_dev_attr_temp3_alarm.dev_attr.attr, |
| |
| &dev_attr_alarms.attr, |
| &dev_attr_name.attr, |
| NULL |
| }; |
| |
| static const struct attribute_group it87_group = { |
| .attrs = it87_attributes, |
| }; |
| |
| static struct attribute *it87_attributes_beep[] = { |
| &sensor_dev_attr_in0_beep.dev_attr.attr, |
| &sensor_dev_attr_in1_beep.dev_attr.attr, |
| &sensor_dev_attr_in2_beep.dev_attr.attr, |
| &sensor_dev_attr_in3_beep.dev_attr.attr, |
| &sensor_dev_attr_in4_beep.dev_attr.attr, |
| &sensor_dev_attr_in5_beep.dev_attr.attr, |
| &sensor_dev_attr_in6_beep.dev_attr.attr, |
| &sensor_dev_attr_in7_beep.dev_attr.attr, |
| |
| &sensor_dev_attr_temp1_beep.dev_attr.attr, |
| &sensor_dev_attr_temp2_beep.dev_attr.attr, |
| &sensor_dev_attr_temp3_beep.dev_attr.attr, |
| NULL |
| }; |
| |
| static const struct attribute_group it87_group_beep = { |
| .attrs = it87_attributes_beep, |
| }; |
| |
| static struct attribute *it87_attributes_fan16[5][3+1] = { { |
| &sensor_dev_attr_fan1_input16.dev_attr.attr, |
| &sensor_dev_attr_fan1_min16.dev_attr.attr, |
| &sensor_dev_attr_fan1_alarm.dev_attr.attr, |
| NULL |
| }, { |
| &sensor_dev_attr_fan2_input16.dev_attr.attr, |
| &sensor_dev_attr_fan2_min16.dev_attr.attr, |
| &sensor_dev_attr_fan2_alarm.dev_attr.attr, |
| NULL |
| }, { |
| &sensor_dev_attr_fan3_input16.dev_attr.attr, |
| &sensor_dev_attr_fan3_min16.dev_attr.attr, |
| &sensor_dev_attr_fan3_alarm.dev_attr.attr, |
| NULL |
| }, { |
| &sensor_dev_attr_fan4_input16.dev_attr.attr, |
| &sensor_dev_attr_fan4_min16.dev_attr.attr, |
| &sensor_dev_attr_fan4_alarm.dev_attr.attr, |
| NULL |
| }, { |
| &sensor_dev_attr_fan5_input16.dev_attr.attr, |
| &sensor_dev_attr_fan5_min16.dev_attr.attr, |
| &sensor_dev_attr_fan5_alarm.dev_attr.attr, |
| NULL |
| } }; |
| |
| static const struct attribute_group it87_group_fan16[5] = { |
| { .attrs = it87_attributes_fan16[0] }, |
| { .attrs = it87_attributes_fan16[1] }, |
| { .attrs = it87_attributes_fan16[2] }, |
| { .attrs = it87_attributes_fan16[3] }, |
| { .attrs = it87_attributes_fan16[4] }, |
| }; |
| |
| static struct attribute *it87_attributes_fan[3][4+1] = { { |
| &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_fan1_alarm.dev_attr.attr, |
| NULL |
| }, { |
| &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_fan2_alarm.dev_attr.attr, |
| NULL |
| }, { |
| &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_fan3_alarm.dev_attr.attr, |
| NULL |
| } }; |
| |
| static const struct attribute_group it87_group_fan[3] = { |
| { .attrs = it87_attributes_fan[0] }, |
| { .attrs = it87_attributes_fan[1] }, |
| { .attrs = it87_attributes_fan[2] }, |
| }; |
| |
| static const struct attribute_group * |
| it87_get_fan_group(const struct it87_data *data) |
| { |
| return has_16bit_fans(data) ? it87_group_fan16 : it87_group_fan; |
| } |
| |
| static struct attribute *it87_attributes_pwm[3][4+1] = { { |
| &sensor_dev_attr_pwm1_enable.dev_attr.attr, |
| &sensor_dev_attr_pwm1.dev_attr.attr, |
| &dev_attr_pwm1_freq.attr, |
| &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr, |
| NULL |
| }, { |
| &sensor_dev_attr_pwm2_enable.dev_attr.attr, |
| &sensor_dev_attr_pwm2.dev_attr.attr, |
| &dev_attr_pwm2_freq.attr, |
| &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr, |
| NULL |
| }, { |
| &sensor_dev_attr_pwm3_enable.dev_attr.attr, |
| &sensor_dev_attr_pwm3.dev_attr.attr, |
| &dev_attr_pwm3_freq.attr, |
| &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr, |
| NULL |
| } }; |
| |
| static const struct attribute_group it87_group_pwm[3] = { |
| { .attrs = it87_attributes_pwm[0] }, |
| { .attrs = it87_attributes_pwm[1] }, |
| { .attrs = it87_attributes_pwm[2] }, |
| }; |
| |
| static struct attribute *it87_attributes_autopwm[3][9+1] = { { |
| &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr, |
| &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr, |
| &sensor_dev_attr_pwm1_auto_point3_pwm.dev_attr.attr, |
| &sensor_dev_attr_pwm1_auto_point4_pwm.dev_attr.attr, |
| &sensor_dev_attr_pwm1_auto_point1_temp.dev_attr.attr, |
| &sensor_dev_attr_pwm1_auto_point1_temp_hyst.dev_attr.attr, |
| &sensor_dev_attr_pwm1_auto_point2_temp.dev_attr.attr, |
| &sensor_dev_attr_pwm1_auto_point3_temp.dev_attr.attr, |
| &sensor_dev_attr_pwm1_auto_point4_temp.dev_attr.attr, |
| NULL |
| }, { |
| &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr, |
| &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr, |
| &sensor_dev_attr_pwm2_auto_point3_pwm.dev_attr.attr, |
| &sensor_dev_attr_pwm2_auto_point4_pwm.dev_attr.attr, |
| &sensor_dev_attr_pwm2_auto_point1_temp.dev_attr.attr, |
| &sensor_dev_attr_pwm2_auto_point1_temp_hyst.dev_attr.attr, |
| &sensor_dev_attr_pwm2_auto_point2_temp.dev_attr.attr, |
| &sensor_dev_attr_pwm2_auto_point3_temp.dev_attr.attr, |
| &sensor_dev_attr_pwm2_auto_point4_temp.dev_attr.attr, |
| NULL |
| }, { |
| &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr, |
| &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr, |
| &sensor_dev_attr_pwm3_auto_point3_pwm.dev_attr.attr, |
| &sensor_dev_attr_pwm3_auto_point4_pwm.dev_attr.attr, |
| &sensor_dev_attr_pwm3_auto_point1_temp.dev_attr.attr, |
| &sensor_dev_attr_pwm3_auto_point1_temp_hyst.dev_attr.attr, |
| &sensor_dev_attr_pwm3_auto_point2_temp.dev_attr.attr, |
| &sensor_dev_attr_pwm3_auto_point3_temp.dev_attr.attr, |
| &sensor_dev_attr_pwm3_auto_point4_temp.dev_attr.attr, |
| NULL |
| } }; |
| |
| static const struct attribute_group it87_group_autopwm[3] = { |
| { .attrs = it87_attributes_autopwm[0] }, |
| { .attrs = it87_attributes_autopwm[1] }, |
| { .attrs = it87_attributes_autopwm[2] }, |
| }; |
| |
| static struct attribute *it87_attributes_fan_beep[] = { |
| &sensor_dev_attr_fan1_beep.dev_attr.attr, |
| &sensor_dev_attr_fan2_beep.dev_attr.attr, |
| &sensor_dev_attr_fan3_beep.dev_attr.attr, |
| &sensor_dev_attr_fan4_beep.dev_attr.attr, |
| &sensor_dev_attr_fan5_beep.dev_attr.attr, |
| }; |
| |
| static struct attribute *it87_attributes_vid[] = { |
| &dev_attr_vrm.attr, |
| &dev_attr_cpu0_vid.attr, |
| NULL |
| }; |
| |
| static const struct attribute_group it87_group_vid = { |
| .attrs = it87_attributes_vid, |
| }; |
| |
| /* SuperIO detection - will change isa_address if a chip is found */ |
| static int __init it87_find(unsigned short *address, |
| struct it87_sio_data *sio_data) |
| { |
| int err = -ENODEV; |
| u16 chip_type; |
| const char *board_vendor, *board_name; |
| |
| superio_enter(); |
| chip_type = force_id ? force_id : superio_inw(DEVID); |
| |
| switch (chip_type) { |
| case IT8705F_DEVID: |
| sio_data->type = it87; |
| break; |
| case IT8712F_DEVID: |
| sio_data->type = it8712; |
| break; |
| case IT8716F_DEVID: |
| case IT8726F_DEVID: |
| sio_data->type = it8716; |
| break; |
| case IT8718F_DEVID: |
| sio_data->type = it8718; |
| break; |
| case IT8720F_DEVID: |
| sio_data->type = it8720; |
| break; |
| case 0xffff: /* No device at all */ |
| goto exit; |
| default: |
| pr_debug(DRVNAME ": Unsupported chip (DEVID=0x%x)\n", |
| chip_type); |
| goto exit; |
| } |
| |
| superio_select(PME); |
| if (!(superio_inb(IT87_ACT_REG) & 0x01)) { |
| pr_info("it87: Device not activated, skipping\n"); |
| goto exit; |
| } |
| |
| *address = superio_inw(IT87_BASE_REG) & ~(IT87_EXTENT - 1); |
| if (*address == 0) { |
| pr_info("it87: Base address not set, skipping\n"); |
| goto exit; |
| } |
| |
| err = 0; |
| sio_data->revision = superio_inb(DEVREV) & 0x0f; |
| pr_info("it87: Found IT%04xF chip at 0x%x, revision %d\n", |
| chip_type, *address, sio_data->revision); |
| |
| /* Read GPIO config and VID value from LDN 7 (GPIO) */ |
| if (sio_data->type == it87) { |
| /* The IT8705F doesn't have VID pins at all */ |
| sio_data->skip_vid = 1; |
| |
| /* The IT8705F has a different LD number for GPIO */ |
| superio_select(5); |
| sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f; |
| } else { |
| int reg; |
| |
| superio_select(GPIO); |
| /* We need at least 4 VID pins */ |
| reg = superio_inb(IT87_SIO_GPIO3_REG); |
| if (reg & 0x0f) { |
| pr_info("it87: VID is disabled (pins used for GPIO)\n"); |
| sio_data->skip_vid = 1; |
| } |
| |
| /* Check if fan3 is there or not */ |
| if (reg & (1 << 6)) |
| sio_data->skip_pwm |= (1 << 2); |
| if (reg & (1 << 7)) |
| sio_data->skip_fan |= (1 << 2); |
| |
| /* Check if fan2 is there or not */ |
| reg = superio_inb(IT87_SIO_GPIO5_REG); |
| if (reg & (1 << 1)) |
| sio_data->skip_pwm |= (1 << 1); |
| if (reg & (1 << 2)) |
| sio_data->skip_fan |= (1 << 1); |
| |
| if ((sio_data->type == it8718 || sio_data->type == it8720) |
| && !(sio_data->skip_vid)) |
| sio_data->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"); |
| |
| sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f; |
| } |
| if (sio_data->beep_pin) |
| pr_info("it87: Beeping is supported\n"); |
| |
| /* Disable specific features based on DMI strings */ |
| board_vendor = dmi_get_system_info(DMI_BOARD_VENDOR); |
| board_name = dmi_get_system_info(DMI_BOARD_NAME); |
| if (board_vendor && board_name) { |
| if (strcmp(board_vendor, "nVIDIA") == 0 |
| && strcmp(board_name, "FN68PT") == 0) { |
| /* On the Shuttle SN68PT, FAN_CTL2 is apparently not |
| connected to a fan, but to something else. One user |
| has reported instant system power-off when changing |
| the PWM2 duty cycle, so we disable it. |
| I use the board name string as the trigger in case |
| the same board is ever used in other systems. */ |
| pr_info("it87: Disabling pwm2 due to " |
| "hardware constraints\n"); |
| sio_data->skip_pwm = (1 << 1); |
| } |
| } |
| |
| exit: |
| superio_exit(); |
| return err; |
| } |
| |
| static void it87_remove_files(struct device *dev) |
| { |
| struct it87_data *data = platform_get_drvdata(pdev); |
| struct it87_sio_data *sio_data = dev->platform_data; |
| const struct attribute_group *fan_group = it87_get_fan_group(data); |
| int i; |
| |
| sysfs_remove_group(&dev->kobj, &it87_group); |
| if (sio_data->beep_pin) |
| sysfs_remove_group(&dev->kobj, &it87_group_beep); |
| for (i = 0; i < 5; i++) { |
| if (!(data->has_fan & (1 << i))) |
| continue; |
| sysfs_remove_group(&dev->kobj, &fan_group[i]); |
| if (sio_data->beep_pin) |
| sysfs_remove_file(&dev->kobj, |
| it87_attributes_fan_beep[i]); |
| } |
| for (i = 0; i < 3; i++) { |
| if (sio_data->skip_pwm & (1 << 0)) |
| continue; |
| sysfs_remove_group(&dev->kobj, &it87_group_pwm[i]); |
| if (has_old_autopwm(data)) |
| sysfs_remove_group(&dev->kobj, |
| &it87_group_autopwm[i]); |
| } |
| if (!sio_data->skip_vid) |
| sysfs_remove_group(&dev->kobj, &it87_group_vid); |
| } |
| |
| static int __devinit it87_probe(struct platform_device *pdev) |
| { |
| struct it87_data *data; |
| struct resource *res; |
| struct device *dev = &pdev->dev; |
| struct it87_sio_data *sio_data = dev->platform_data; |
| const struct attribute_group *fan_group; |
| int err = 0, i; |
| int enable_pwm_interface; |
| int fan_beep_need_rw; |
| static const char *names[] = { |
| "it87", |
| "it8712", |
| "it8716", |
| "it8718", |
| "it8720", |
| }; |
| |
| res = platform_get_resource(pdev, IORESOURCE_IO, 0); |
| if (!request_region(res->start, IT87_EC_EXTENT, DRVNAME)) { |
| dev_err(dev, "Failed to request region 0x%lx-0x%lx\n", |
| (unsigned long)res->start, |
| (unsigned long)(res->start + IT87_EC_EXTENT - 1)); |
| err = -EBUSY; |
| goto ERROR0; |
| } |
| |
| data = kzalloc(sizeof(struct it87_data), GFP_KERNEL); |
| if (!data) { |
| err = -ENOMEM; |
| goto ERROR1; |
| } |
| |
| data->addr = res->start; |
| data->type = sio_data->type; |
| data->revision = sio_data->revision; |
| data->name = names[sio_data->type]; |
| |
| /* Now, we do the remaining detection. */ |
| if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80) |
| || it87_read_value(data, IT87_REG_CHIPID) != 0x90) { |
| err = -ENODEV; |
| goto ERROR2; |
| } |
| |
| platform_set_drvdata(pdev, data); |
| |
| mutex_init(&data->update_lock); |
| |
| /* Check PWM configuration */ |
| enable_pwm_interface = it87_check_pwm(dev); |
| |
| /* Initialize the IT87 chip */ |
| it87_init_device(pdev); |
| |
| /* Register sysfs hooks */ |
| err = sysfs_create_group(&dev->kobj, &it87_group); |
| if (err) |
| goto ERROR2; |
| |
| if (sio_data->beep_pin) { |
| err = sysfs_create_group(&dev->kobj, &it87_group_beep); |
| if (err) |
| goto ERROR4; |
| } |
| |
| /* Do not create fan files for disabled fans */ |
| fan_group = it87_get_fan_group(data); |
| fan_beep_need_rw = 1; |
| for (i = 0; i < 5; i++) { |
| if (!(data->has_fan & (1 << i))) |
| continue; |
| err = sysfs_create_group(&dev->kobj, &fan_group[i]); |
| if (err) |
| goto ERROR4; |
| |
| if (sio_data->beep_pin) { |
| err = sysfs_create_file(&dev->kobj, |
| it87_attributes_fan_beep[i]); |
| if (err) |
| goto ERROR4; |
| if (!fan_beep_need_rw) |
| continue; |
| |
| /* As we have a single beep enable bit for all fans, |
| * only the first enabled fan has a writable attribute |
| * for it. */ |
| if (sysfs_chmod_file(&dev->kobj, |
| it87_attributes_fan_beep[i], |
| S_IRUGO | S_IWUSR)) |
| dev_dbg(dev, "chmod +w fan%d_beep failed\n", |
| i + 1); |
| fan_beep_need_rw = 0; |
| } |
| } |
| |
| if (enable_pwm_interface) { |
| for (i = 0; i < 3; i++) { |
| if (sio_data->skip_pwm & (1 << i)) |
| continue; |
| err = sysfs_create_group(&dev->kobj, |
| &it87_group_pwm[i]); |
| if (err) |
| goto ERROR4; |
| |
| if (!has_old_autopwm(data)) |
| continue; |
| err = sysfs_create_group(&dev->kobj, |
| &it87_group_autopwm[i]); |
| if (err) |
| goto ERROR4; |
| } |
| } |
| |
| if (!sio_data->skip_vid) { |
| data->vrm = vid_which_vrm(); |
| /* VID reading from Super-I/O config space if available */ |
| data->vid = sio_data->vid_value; |
| err = sysfs_create_group(&dev->kobj, &it87_group_vid); |
| if (err) |
| goto ERROR4; |
| } |
| |
| data->hwmon_dev = hwmon_device_register(dev); |
| if (IS_ERR(data->hwmon_dev)) { |
| err = PTR_ERR(data->hwmon_dev); |
| goto ERROR4; |
| } |
| |
| return 0; |
| |
| ERROR4: |
| it87_remove_files(dev); |
| ERROR2: |
| platform_set_drvdata(pdev, NULL); |
| kfree(data); |
| ERROR1: |
| release_region(res->start, IT87_EC_EXTENT); |
| ERROR0: |
| return err; |
| } |
| |
| static int __devexit it87_remove(struct platform_device *pdev) |
| { |
| struct it87_data *data = platform_get_drvdata(pdev); |
| |
| hwmon_device_unregister(data->hwmon_dev); |
| it87_remove_files(&pdev->dev); |
| |
| release_region(data->addr, IT87_EC_EXTENT); |
| platform_set_drvdata(pdev, NULL); |
| kfree(data); |
| |
| return 0; |
| } |
| |
| /* Must be called with data->update_lock held, except during initialization. |
| 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 it87_data *data, u8 reg) |
| { |
| outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET); |
| return inb_p(data->addr + IT87_DATA_REG_OFFSET); |
| } |
| |
| /* Must be called with data->update_lock held, except during initialization. |
| 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 void it87_write_value(struct it87_data *data, u8 reg, u8 value) |
| { |
| outb_p(reg, data->addr + IT87_ADDR_REG_OFFSET); |
| outb_p(value, data->addr + IT87_DATA_REG_OFFSET); |
| } |
| |
| /* Return 1 if and only if the PWM interface is safe to use */ |
| static int __devinit it87_check_pwm(struct device *dev) |
| { |
| struct it87_data *data = dev_get_drvdata(dev); |
| /* Some BIOSes fail to correctly configure the IT87 fans. All fans off |
| * and polarity set to active low is sign that this is the case so we |
| * disable pwm control to protect the user. */ |
| int tmp = it87_read_value(data, IT87_REG_FAN_CTL); |
| if ((tmp & 0x87) == 0) { |
| if (fix_pwm_polarity) { |
| /* The user asks us to attempt a chip reconfiguration. |
| * This means switching to active high polarity and |
| * inverting all fan speed values. */ |
| int i; |
| u8 pwm[3]; |
| |
| for (i = 0; i < 3; i++) |
| pwm[i] = it87_read_value(data, |
| IT87_REG_PWM(i)); |
| |
| /* If any fan is in automatic pwm mode, the polarity |
| * might be correct, as suspicious as it seems, so we |
| * better don't change anything (but still disable the |
| * PWM interface). */ |
| if (!((pwm[0] | pwm[1] | pwm[2]) & 0x80)) { |
| dev_info(dev, "Reconfiguring PWM to " |
| "active high polarity\n"); |
| it87_write_value(data, IT87_REG_FAN_CTL, |
| tmp | 0x87); |
| for (i = 0; i < 3; i++) |
| it87_write_value(data, |
| IT87_REG_PWM(i), |
| 0x7f & ~pwm[i]); |
| return 1; |
| } |
| |
| dev_info(dev, "PWM configuration is " |
| "too broken to be fixed\n"); |
| } |
| |
| dev_info(dev, "Detected broken BIOS " |
| "defaults, disabling PWM interface\n"); |
| return 0; |
| } else if (fix_pwm_polarity) { |
| dev_info(dev, "PWM configuration looks " |
| "sane, won't touch\n"); |
| } |
| |
| return 1; |
| } |
| |
| /* Called when we have found a new IT87. */ |
| static void __devinit it87_init_device(struct platform_device *pdev) |
| { |
| struct it87_sio_data *sio_data = pdev->dev.platform_data; |
| struct it87_data *data = platform_get_drvdata(pdev); |
| int tmp, i; |
| u8 mask; |
| |
| /* For each PWM channel: |
| * - If it is in automatic mode, setting to manual mode should set |
| * the fan to full speed by default. |
| * - If it is in manual mode, we need a mapping to temperature |
| * channels to use when later setting to automatic mode later. |
| * Use a 1:1 mapping by default (we are clueless.) |
| * In both cases, the value can (and should) be changed by the user |
| * prior to switching to a different mode. */ |
| for (i = 0; i < 3; i++) { |
| data->pwm_temp_map[i] = i; |
| data->pwm_duty[i] = 0x7f; /* Full speed */ |
| data->auto_pwm[i][3] = 0x7f; /* Full speed, hard-coded */ |
| } |
| |
| /* 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(data, IT87_REG_VIN_MIN(i)); |
| if (tmp == 0xff) |
| it87_write_value(data, IT87_REG_VIN_MIN(i), 0); |
| } |
| for (i = 0; i < 3; i++) { |
| tmp = it87_read_value(data, IT87_REG_TEMP_HIGH(i)); |
| if (tmp == 0xff) |
| it87_write_value(data, IT87_REG_TEMP_HIGH(i), 127); |
| } |
| |
| /* Temperature channels are not forcibly enabled, as they can be |
| * set to two different sensor types and we can't guess which one |
| * is correct for a given system. These channels can be enabled at |
| * run-time through the temp{1-3}_type sysfs accessors if needed. */ |
| |
| /* Check if voltage monitors are reset manually or by some reason */ |
| tmp = it87_read_value(data, IT87_REG_VIN_ENABLE); |
| if ((tmp & 0xff) == 0) { |
| /* Enable all voltage monitors */ |
| it87_write_value(data, IT87_REG_VIN_ENABLE, 0xff); |
| } |
| |
| /* Check if tachometers are reset manually or by some reason */ |
| mask = 0x70 & ~(sio_data->skip_fan << 4); |
| data->fan_main_ctrl = it87_read_value(data, IT87_REG_FAN_MAIN_CTRL); |
| if ((data->fan_main_ctrl & mask) == 0) { |
| /* Enable all fan tachometers */ |
| data->fan_main_ctrl |= mask; |
| it87_write_value(data, 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 (has_16bit_fans(data)) { |
| tmp = it87_read_value(data, IT87_REG_FAN_16BIT); |
| if (~tmp & 0x07 & data->has_fan) { |
| dev_dbg(&pdev->dev, |
| "Setting fan1-3 to 16-bit mode\n"); |
| it87_write_value(data, IT87_REG_FAN_16BIT, |
| tmp | 0x07); |
| } |
| /* IT8705F only supports three fans. */ |
| if (data->type != it87) { |
| if (tmp & (1 << 4)) |
| data->has_fan |= (1 << 3); /* fan4 enabled */ |
| if (tmp & (1 << 5)) |
| data->has_fan |= (1 << 4); /* fan5 enabled */ |
| } |
| } |
| |
| /* Fan input pins may be used for alternative functions */ |
| data->has_fan &= ~sio_data->skip_fan; |
| |
| /* Start monitoring */ |
| it87_write_value(data, IT87_REG_CONFIG, |
| (it87_read_value(data, IT87_REG_CONFIG) & 0x36) |
| | (update_vbat ? 0x41 : 0x01)); |
| } |
| |
| static void it87_update_pwm_ctrl(struct it87_data *data, int nr) |
| { |
| data->pwm_ctrl[nr] = it87_read_value(data, IT87_REG_PWM(nr)); |
| if (data->pwm_ctrl[nr] & 0x80) /* Automatic mode */ |
| data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03; |
| else /* Manual mode */ |
| data->pwm_duty[nr] = data->pwm_ctrl[nr] & 0x7f; |
| |
| if (has_old_autopwm(data)) { |
| int i; |
| |
| for (i = 0; i < 5 ; i++) |
| data->auto_temp[nr][i] = it87_read_value(data, |
| IT87_REG_AUTO_TEMP(nr, i)); |
| for (i = 0; i < 3 ; i++) |
| data->auto_pwm[nr][i] = it87_read_value(data, |
| IT87_REG_AUTO_PWM(nr, i)); |
| } |
| } |
| |
| static struct it87_data *it87_update_device(struct device *dev) |
| { |
| struct it87_data *data = dev_get_drvdata(dev); |
| int i; |
| |
| mutex_lock(&data->update_lock); |
| |
| if (time_after(jiffies, data->last_updated + HZ + HZ / 2) |
| || !data->valid) { |
| if (update_vbat) { |
| /* Cleared after each update, so reenable. Value |
| returned by this read will be previous value */ |
| it87_write_value(data, IT87_REG_CONFIG, |
| it87_read_value(data, IT87_REG_CONFIG) | 0x40); |
| } |
| for (i = 0; i <= 7; i++) { |
| data->in[i] = |
| it87_read_value(data, IT87_REG_VIN(i)); |
| data->in_min[i] = |
| it87_read_value(data, IT87_REG_VIN_MIN(i)); |
| data->in_max[i] = |
| it87_read_value(data, IT87_REG_VIN_MAX(i)); |
| } |
| /* in8 (battery) has no limit registers */ |
| data->in[8] = it87_read_value(data, IT87_REG_VIN(8)); |
| |
| for (i = 0; i < 5; i++) { |
| /* Skip disabled fans */ |
| if (!(data->has_fan & (1 << i))) |
| continue; |
| |
| data->fan_min[i] = |
| it87_read_value(data, IT87_REG_FAN_MIN[i]); |
| data->fan[i] = it87_read_value(data, |
| IT87_REG_FAN[i]); |
| /* Add high byte if in 16-bit mode */ |
| if (has_16bit_fans(data)) { |
| data->fan[i] |= it87_read_value(data, |
| IT87_REG_FANX[i]) << 8; |
| data->fan_min[i] |= it87_read_value(data, |
| IT87_REG_FANX_MIN[i]) << 8; |
| } |
| } |
| for (i = 0; i < 3; i++) { |
| data->temp[i] = |
| it87_read_value(data, IT87_REG_TEMP(i)); |
| data->temp_high[i] = |
| it87_read_value(data, IT87_REG_TEMP_HIGH(i)); |
| data->temp_low[i] = |
| it87_read_value(data, IT87_REG_TEMP_LOW(i)); |
| } |
| |
| /* Newer chips don't have clock dividers */ |
| if ((data->has_fan & 0x07) && !has_16bit_fans(data)) { |
| i = it87_read_value(data, 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(data, IT87_REG_ALARM1) | |
| (it87_read_value(data, IT87_REG_ALARM2) << 8) | |
| (it87_read_value(data, IT87_REG_ALARM3) << 16); |
| data->beeps = it87_read_value(data, IT87_REG_BEEP_ENABLE); |
| |
| data->fan_main_ctrl = it87_read_value(data, |
| IT87_REG_FAN_MAIN_CTRL); |
| data->fan_ctl = it87_read_value(data, IT87_REG_FAN_CTL); |
| for (i = 0; i < 3; i++) |
| it87_update_pwm_ctrl(data, i); |
| |
| data->sensor = it87_read_value(data, IT87_REG_TEMP_ENABLE); |
| /* The 8705 does not have VID capability. |
| The 8718 and the 8720 don't use IT87_REG_VID for the |
| same purpose. */ |
| if (data->type == it8712 || data->type == it8716) { |
| data->vid = it87_read_value(data, IT87_REG_VID); |
| /* 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; |
| } |
| |
| mutex_unlock(&data->update_lock); |
| |
| return data; |
| } |
| |
| static int __init it87_device_add(unsigned short address, |
| const struct it87_sio_data *sio_data) |
| { |
| struct resource res = { |
| .start = address + IT87_EC_OFFSET, |
| .end = address + IT87_EC_OFFSET + IT87_EC_EXTENT - 1, |
| .name = DRVNAME, |
| .flags = IORESOURCE_IO, |
| }; |
| int err; |
| |
| err = acpi_check_resource_conflict(&res); |
| if (err) |
| goto exit; |
| |
| pdev = platform_device_alloc(DRVNAME, address); |
| if (!pdev) { |
| err = -ENOMEM; |
| printk(KERN_ERR DRVNAME ": Device allocation failed\n"); |
| goto exit; |
| } |
| |
| err = platform_device_add_resources(pdev, &res, 1); |
| if (err) { |
| printk(KERN_ERR DRVNAME ": Device resource addition failed " |
| "(%d)\n", err); |
| goto exit_device_put; |
| } |
| |
| err = platform_device_add_data(pdev, sio_data, |
| sizeof(struct it87_sio_data)); |
| if (err) { |
| printk(KERN_ERR DRVNAME ": Platform data allocation failed\n"); |
| goto exit_device_put; |
| } |
| |
| err = platform_device_add(pdev); |
| if (err) { |
| printk(KERN_ERR DRVNAME ": Device addition failed (%d)\n", |
| err); |
| goto exit_device_put; |
| } |
| |
| return 0; |
| |
| exit_device_put: |
| platform_device_put(pdev); |
| exit: |
| return err; |
| } |
| |
| static int __init sm_it87_init(void) |
| { |
| int err; |
| unsigned short isa_address = 0; |
| struct it87_sio_data sio_data; |
| |
| memset(&sio_data, 0, sizeof(struct it87_sio_data)); |
| err = it87_find(&isa_address, &sio_data); |
| if (err) |
| return err; |
| err = platform_driver_register(&it87_driver); |
| if (err) |
| return err; |
| |
| err = it87_device_add(isa_address, &sio_data); |
| if (err) { |
| platform_driver_unregister(&it87_driver); |
| return err; |
| } |
| |
| return 0; |
| } |
| |
| static void __exit sm_it87_exit(void) |
| { |
| platform_device_unregister(pdev); |
| platform_driver_unregister(&it87_driver); |
| } |
| |
| |
| MODULE_AUTHOR("Chris Gauthron, " |
| "Jean Delvare <khali@linux-fr.org>"); |
| MODULE_DESCRIPTION("IT8705F/8712F/8716F/8718F/8720F/8726F, 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); |
| MODULE_PARM_DESC(fix_pwm_polarity, |
| "Force PWM polarity to active high (DANGEROUS)"); |
| MODULE_LICENSE("GPL"); |
| |
| module_init(sm_it87_init); |
| module_exit(sm_it87_exit); |