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Diffstat (limited to 'drivers/hwmon/it87.c')
| -rw-r--r-- | drivers/hwmon/it87.c | 2831 |
1 files changed, 2831 insertions, 0 deletions
diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c new file mode 100644 index 000000000..d0ee556e8 --- /dev/null +++ b/drivers/hwmon/it87.c @@ -0,0 +1,2831 @@ +/* + * 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: IT8603E Super I/O chip w/LPC interface + * IT8620E Super I/O chip w/LPC interface + * IT8623E Super I/O chip w/LPC interface + * 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 + * IT8721F Super I/O chip w/LPC interface + * IT8726F Super I/O chip w/LPC interface + * IT8728F Super I/O chip w/LPC interface + * IT8758E Super I/O chip w/LPC interface + * IT8771E Super I/O chip w/LPC interface + * IT8772E Super I/O chip w/LPC interface + * IT8781F Super I/O chip w/LPC interface + * IT8782F Super I/O chip w/LPC interface + * IT8783E/F Super I/O chip w/LPC interface + * IT8786E Super I/O chip w/LPC interface + * IT8790E Super I/O chip w/LPC interface + * Sis950 A clone of the IT8705F + * + * Copyright (C) 2001 Chris Gauthron + * Copyright (C) 2005-2010 Jean Delvare <jdelvare@suse.de> + * + * 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. + */ + +#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt + +#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, it8721, it8728, it8771, + it8772, it8781, it8782, it8783, it8786, it8790, it8603, it8620 }; + +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 inline void superio_outb(int reg, int val) +{ + outb(reg, REG); + outb(val, 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 int superio_enter(void) +{ + /* + * Try to reserve REG and REG + 1 for exclusive access. + */ + if (!request_muxed_region(REG, 2, DRVNAME)) + return -EBUSY; + + outb(0x87, REG); + outb(0x01, REG); + outb(0x55, REG); + outb(0x55, REG); + return 0; +} + +static inline void superio_exit(void) +{ + outb(0x02, REG); + outb(0x02, VAL); + release_region(REG, 2); +} + +/* 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 IT8721F_DEVID 0x8721 +#define IT8726F_DEVID 0x8726 +#define IT8728F_DEVID 0x8728 +#define IT8771E_DEVID 0x8771 +#define IT8772E_DEVID 0x8772 +#define IT8781F_DEVID 0x8781 +#define IT8782F_DEVID 0x8782 +#define IT8783E_DEVID 0x8783 +#define IT8786E_DEVID 0x8786 +#define IT8790E_DEVID 0x8790 +#define IT8603E_DEVID 0x8603 +#define IT8620E_DEVID 0x8620 +#define IT8623E_DEVID 0x8623 +#define IT87_ACT_REG 0x30 +#define IT87_BASE_REG 0x60 + +/* Logical device 7 registers (IT8712F and later) */ +#define IT87_SIO_GPIO1_REG 0x25 +#define IT87_SIO_GPIO2_REG 0x26 +#define IT87_SIO_GPIO3_REG 0x27 +#define IT87_SIO_GPIO5_REG 0x29 +#define IT87_SIO_PINX1_REG 0x2a /* Pin selection */ +#define IT87_SIO_PINX2_REG 0x2c /* Pin selection */ +#define IT87_SIO_SPI_REG 0xef /* SPI function pin select */ +#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 bool update_vbat; + +/* Not all BIOSes properly configure the PWM registers */ +static bool 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, 0x4c }; +static const u8 IT87_REG_FAN_MIN[] = { 0x10, 0x11, 0x12, 0x84, 0x86, 0x4e }; +static const u8 IT87_REG_FANX[] = { 0x18, 0x19, 0x1a, 0x81, 0x83, 0x4d }; +static const u8 IT87_REG_FANX_MIN[] = { 0x1b, 0x1c, 0x1d, 0x85, 0x87, 0x4f }; +static const u8 IT87_REG_TEMP_OFFSET[] = { 0x56, 0x57, 0x59 }; + +#define IT87_REG_FAN_MAIN_CTRL 0x13 +#define IT87_REG_FAN_CTL 0x14 +#define IT87_REG_PWM(nr) (0x15 + (nr)) +#define IT87_REG_PWM_DUTY(nr) (0x63 + (nr) * 8) + +#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_TEMP_EXTRA 0x55 +#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)) + +struct it87_devices { + const char *name; + const char * const suffix; + u16 features; + u8 peci_mask; + u8 old_peci_mask; +}; + +#define FEAT_12MV_ADC (1 << 0) +#define FEAT_NEWER_AUTOPWM (1 << 1) +#define FEAT_OLD_AUTOPWM (1 << 2) +#define FEAT_16BIT_FANS (1 << 3) +#define FEAT_TEMP_OFFSET (1 << 4) +#define FEAT_TEMP_PECI (1 << 5) +#define FEAT_TEMP_OLD_PECI (1 << 6) +#define FEAT_FAN16_CONFIG (1 << 7) /* Need to enable 16-bit fans */ +#define FEAT_FIVE_FANS (1 << 8) /* Supports five fans */ +#define FEAT_VID (1 << 9) /* Set if chip supports VID */ +#define FEAT_IN7_INTERNAL (1 << 10) /* Set if in7 is internal */ +#define FEAT_SIX_FANS (1 << 11) /* Supports six fans */ + +static const struct it87_devices it87_devices[] = { + [it87] = { + .name = "it87", + .suffix = "F", + .features = FEAT_OLD_AUTOPWM, /* may need to overwrite */ + }, + [it8712] = { + .name = "it8712", + .suffix = "F", + .features = FEAT_OLD_AUTOPWM | FEAT_VID, + /* may need to overwrite */ + }, + [it8716] = { + .name = "it8716", + .suffix = "F", + .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET | FEAT_VID + | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS, + }, + [it8718] = { + .name = "it8718", + .suffix = "F", + .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET | FEAT_VID + | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS, + .old_peci_mask = 0x4, + }, + [it8720] = { + .name = "it8720", + .suffix = "F", + .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET | FEAT_VID + | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS, + .old_peci_mask = 0x4, + }, + [it8721] = { + .name = "it8721", + .suffix = "F", + .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS + | FEAT_TEMP_OFFSET | FEAT_TEMP_OLD_PECI | FEAT_TEMP_PECI + | FEAT_FAN16_CONFIG | FEAT_FIVE_FANS | FEAT_IN7_INTERNAL, + .peci_mask = 0x05, + .old_peci_mask = 0x02, /* Actually reports PCH */ + }, + [it8728] = { + .name = "it8728", + .suffix = "F", + .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS + | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_FIVE_FANS + | FEAT_IN7_INTERNAL, + .peci_mask = 0x07, + }, + [it8771] = { + .name = "it8771", + .suffix = "E", + .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS + | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL, + /* PECI: guesswork */ + /* 12mV ADC (OHM) */ + /* 16 bit fans (OHM) */ + /* three fans, always 16 bit (guesswork) */ + .peci_mask = 0x07, + }, + [it8772] = { + .name = "it8772", + .suffix = "E", + .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS + | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL, + /* PECI (coreboot) */ + /* 12mV ADC (HWSensors4, OHM) */ + /* 16 bit fans (HWSensors4, OHM) */ + /* three fans, always 16 bit (datasheet) */ + .peci_mask = 0x07, + }, + [it8781] = { + .name = "it8781", + .suffix = "F", + .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET + | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG, + .old_peci_mask = 0x4, + }, + [it8782] = { + .name = "it8782", + .suffix = "F", + .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET + | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG, + .old_peci_mask = 0x4, + }, + [it8783] = { + .name = "it8783", + .suffix = "E/F", + .features = FEAT_16BIT_FANS | FEAT_TEMP_OFFSET + | FEAT_TEMP_OLD_PECI | FEAT_FAN16_CONFIG, + .old_peci_mask = 0x4, + }, + [it8786] = { + .name = "it8786", + .suffix = "E", + .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS + | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL, + .peci_mask = 0x07, + }, + [it8790] = { + .name = "it8790", + .suffix = "E", + .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS + | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL, + .peci_mask = 0x07, + }, + [it8603] = { + .name = "it8603", + .suffix = "E", + .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS + | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_IN7_INTERNAL, + .peci_mask = 0x07, + }, + [it8620] = { + .name = "it8620", + .suffix = "E", + .features = FEAT_NEWER_AUTOPWM | FEAT_12MV_ADC | FEAT_16BIT_FANS + | FEAT_TEMP_OFFSET | FEAT_TEMP_PECI | FEAT_SIX_FANS + | FEAT_IN7_INTERNAL, + .peci_mask = 0x07, + }, +}; + +#define has_16bit_fans(data) ((data)->features & FEAT_16BIT_FANS) +#define has_12mv_adc(data) ((data)->features & FEAT_12MV_ADC) +#define has_newer_autopwm(data) ((data)->features & FEAT_NEWER_AUTOPWM) +#define has_old_autopwm(data) ((data)->features & FEAT_OLD_AUTOPWM) +#define has_temp_offset(data) ((data)->features & FEAT_TEMP_OFFSET) +#define has_temp_peci(data, nr) (((data)->features & FEAT_TEMP_PECI) && \ + ((data)->peci_mask & (1 << nr))) +#define has_temp_old_peci(data, nr) \ + (((data)->features & FEAT_TEMP_OLD_PECI) && \ + ((data)->old_peci_mask & (1 << nr))) +#define has_fan16_config(data) ((data)->features & FEAT_FAN16_CONFIG) +#define has_five_fans(data) ((data)->features & (FEAT_FIVE_FANS | \ + FEAT_SIX_FANS)) +#define has_vid(data) ((data)->features & FEAT_VID) +#define has_in7_internal(data) ((data)->features & FEAT_IN7_INTERNAL) +#define has_six_fans(data) ((data)->features & FEAT_SIX_FANS) + +struct it87_sio_data { + enum chips type; + /* Values read from Super-I/O config space */ + u8 revision; + u8 vid_value; + u8 beep_pin; + u8 internal; /* Internal sensors can be labeled */ + /* Features skipped based on config or DMI */ + u16 skip_in; + u8 skip_vid; + u8 skip_fan; + u8 skip_pwm; + u8 skip_temp; +}; + +/* + * 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; + u16 features; + u8 peci_mask; + u8 old_peci_mask; + + unsigned short addr; + const char *name; + struct mutex update_lock; + char valid; /* !=0 if following fields are valid */ + unsigned long last_updated; /* In jiffies */ + + u16 in_scaled; /* Internal voltage sensors are scaled */ + u8 in[10][3]; /* [nr][0]=in, [1]=min, [2]=max */ + u8 has_fan; /* Bitfield, fans enabled */ + u16 fan[6][2]; /* Register values, [nr][0]=fan, [1]=min */ + u8 has_temp; /* Bitfield, temp sensors enabled */ + s8 temp[3][4]; /* [nr][0]=temp, [1]=min, [2]=max, [3]=offset */ + u8 sensor; /* Register value (IT87_REG_TEMP_ENABLE) */ + u8 extra; /* Register value (IT87_REG_TEMP_EXTRA) */ + 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 up to + * the IT8720F. 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. + * Starting with the IT8721F, the manual PWM duty cycles are stored + * in separate registers (8-bit values), so the separate tracking + * is no longer needed, but it is still done to keep the driver + * simple. + */ + u8 pwm_ctrl[3]; /* Register value */ + u8 pwm_duty[3]; /* Manual PWM value set by user */ + 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 int adc_lsb(const struct it87_data *data, int nr) +{ + int lsb = has_12mv_adc(data) ? 12 : 16; + if (data->in_scaled & (1 << nr)) + lsb <<= 1; + return lsb; +} + +static u8 in_to_reg(const struct it87_data *data, int nr, long val) +{ + val = DIV_ROUND_CLOSEST(val, adc_lsb(data, nr)); + return clamp_val(val, 0, 255); +} + +static int in_from_reg(const struct it87_data *data, int nr, int val) +{ + return val * adc_lsb(data, nr); +} + +static inline u8 FAN_TO_REG(long rpm, int div) +{ + if (rpm == 0) + return 255; + rpm = clamp_val(rpm, 1, 1000000); + return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254); +} + +static inline u16 FAN16_TO_REG(long rpm) +{ + if (rpm == 0) + return 0xffff; + return clamp_val((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) (clamp_val(((val) < 0 ? (((val) - 500) / 1000) : \ + ((val) + 500) / 1000), -128, 127)) +#define TEMP_FROM_REG(val) ((val) * 1000) + +static u8 pwm_to_reg(const struct it87_data *data, long val) +{ + if (has_newer_autopwm(data)) + return val; + else + return val >> 1; +} + +static int pwm_from_reg(const struct it87_data *data, u8 reg) +{ + if (has_newer_autopwm(data)) + return reg; + else + return (reg & 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)) + +/* + * PWM base frequencies. The frequency has to be divided by either 128 or 256, + * depending on the chip type, to calculate the actual PWM frequency. + * + * Some of the chip datasheets suggest a base frequency of 51 kHz instead + * of 750 kHz for the slowest base frequency, resulting in a PWM frequency + * of 200 Hz. Sometimes both PWM frequency select registers are affected, + * sometimes just one. It is unknown if this is a datasheet error or real, + * so this is ignored for now. + */ +static const unsigned int pwm_freq[8] = { + 48000000, + 24000000, + 12000000, + 8000000, + 6000000, + 3000000, + 1500000, + 750000, +}; + +static int it87_probe(struct platform_device *pdev); +static int 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 = { + .name = DRVNAME, + }, + .probe = it87_probe, + .remove = it87_remove, +}; + +static ssize_t show_in(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); + int nr = sattr->nr; + int index = sattr->index; + + struct it87_data *data = it87_update_device(dev); + return sprintf(buf, "%d\n", in_from_reg(data, nr, data->in[nr][index])); +} + +static ssize_t set_in(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); + int nr = sattr->nr; + int index = sattr->index; + + struct it87_data *data = dev_get_drvdata(dev); + unsigned long val; + + if (kstrtoul(buf, 10, &val) < 0) + return -EINVAL; + + mutex_lock(&data->update_lock); + data->in[nr][index] = in_to_reg(data, nr, val); + it87_write_value(data, + index == 1 ? IT87_REG_VIN_MIN(nr) + : IT87_REG_VIN_MAX(nr), + data->in[nr][index]); + mutex_unlock(&data->update_lock); + return count; +} + +static SENSOR_DEVICE_ATTR_2(in0_input, S_IRUGO, show_in, NULL, 0, 0); +static SENSOR_DEVICE_ATTR_2(in0_min, S_IRUGO | S_IWUSR, show_in, set_in, + 0, 1); +static SENSOR_DEVICE_ATTR_2(in0_max, S_IRUGO | S_IWUSR, show_in, set_in, + 0, 2); + +static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_in, NULL, 1, 0); +static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_in, set_in, + 1, 1); +static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_in, set_in, + 1, 2); + +static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_in, NULL, 2, 0); +static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_in, set_in, + 2, 1); +static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_in, set_in, + 2, 2); + +static SENSOR_DEVICE_ATTR_2(in3_input, S_IRUGO, show_in, NULL, 3, 0); +static SENSOR_DEVICE_ATTR_2(in3_min, S_IRUGO | S_IWUSR, show_in, set_in, + 3, 1); +static SENSOR_DEVICE_ATTR_2(in3_max, S_IRUGO | S_IWUSR, show_in, set_in, + 3, 2); + +static SENSOR_DEVICE_ATTR_2(in4_input, S_IRUGO, show_in, NULL, 4, 0); +static SENSOR_DEVICE_ATTR_2(in4_min, S_IRUGO | S_IWUSR, show_in, set_in, + 4, 1); +static SENSOR_DEVICE_ATTR_2(in4_max, S_IRUGO | S_IWUSR, show_in, set_in, + 4, 2); + +static SENSOR_DEVICE_ATTR_2(in5_input, S_IRUGO, show_in, NULL, 5, 0); +static SENSOR_DEVICE_ATTR_2(in5_min, S_IRUGO | S_IWUSR, show_in, set_in, + 5, 1); +static SENSOR_DEVICE_ATTR_2(in5_max, S_IRUGO | S_IWUSR, show_in, set_in, + 5, 2); + +static SENSOR_DEVICE_ATTR_2(in6_input, S_IRUGO, show_in, NULL, 6, 0); +static SENSOR_DEVICE_ATTR_2(in6_min, S_IRUGO | S_IWUSR, show_in, set_in, + 6, 1); +static SENSOR_DEVICE_ATTR_2(in6_max, S_IRUGO | S_IWUSR, show_in, set_in, + 6, 2); + +static SENSOR_DEVICE_ATTR_2(in7_input, S_IRUGO, show_in, NULL, 7, 0); +static SENSOR_DEVICE_ATTR_2(in7_min, S_IRUGO | S_IWUSR, show_in, set_in, + 7, 1); +static SENSOR_DEVICE_ATTR_2(in7_max, S_IRUGO | S_IWUSR, show_in, set_in, + 7, 2); + +static SENSOR_DEVICE_ATTR_2(in8_input, S_IRUGO, show_in, NULL, 8, 0); +static SENSOR_DEVICE_ATTR_2(in9_input, S_IRUGO, show_in, NULL, 9, 0); + +/* 3 temperatures */ +static ssize_t show_temp(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); + int nr = sattr->nr; + int index = sattr->index; + struct it87_data *data = it87_update_device(dev); + + return sprintf(buf, "%d\n", TEMP_FROM_REG(data->temp[nr][index])); +} + +static ssize_t set_temp(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); + int nr = sattr->nr; + int index = sattr->index; + struct it87_data *data = dev_get_drvdata(dev); + long val; + u8 reg, regval; + + if (kstrtol(buf, 10, &val) < 0) + return -EINVAL; + + mutex_lock(&data->update_lock); + + switch (index) { + default: + case 1: + reg = IT87_REG_TEMP_LOW(nr); + break; + case 2: + reg = IT87_REG_TEMP_HIGH(nr); + break; + case 3: + regval = it87_read_value(data, IT87_REG_BEEP_ENABLE); + if (!(regval & 0x80)) { + regval |= 0x80; + it87_write_value(data, IT87_REG_BEEP_ENABLE, regval); + } + data->valid = 0; + reg = IT87_REG_TEMP_OFFSET[nr]; + break; + } + + data->temp[nr][index] = TEMP_TO_REG(val); + it87_write_value(data, reg, data->temp[nr][index]); + mutex_unlock(&data->update_lock); + return count; +} + +static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, 0, 0); +static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp, + 0, 1); +static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp, + 0, 2); +static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp, + set_temp, 0, 3); +static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, 1, 0); +static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp, + 1, 1); +static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp, + 1, 2); +static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp, + set_temp, 1, 3); +static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, 2, 0); +static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp, + 2, 1); +static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp, + 2, 2); +static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp, + set_temp, 2, 3); + +static ssize_t show_temp_type(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 value is updated while used */ + u8 extra = data->extra; + + if ((has_temp_peci(data, nr) && (reg >> 6 == nr + 1)) + || (has_temp_old_peci(data, nr) && (extra & 0x80))) + return sprintf(buf, "6\n"); /* Intel PECI */ + 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_temp_type(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, extra; + + if (kstrtol(buf, 10, &val) < 0) + return -EINVAL; + + reg = it87_read_value(data, IT87_REG_TEMP_ENABLE); + reg &= ~(1 << nr); + reg &= ~(8 << nr); + if (has_temp_peci(data, nr) && (reg >> 6 == nr + 1 || val == 6)) + reg &= 0x3f; + extra = it87_read_value(data, IT87_REG_TEMP_EXTRA); + if (has_temp_old_peci(data, nr) && ((extra & 0x80) || val == 6)) + extra &= 0x7f; + 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; 6 = Intel PECI; 0 = disabled */ + if (val == 3) + reg |= 1 << nr; + else if (val == 4) + reg |= 8 << nr; + else if (has_temp_peci(data, nr) && val == 6) + reg |= (nr + 1) << 6; + else if (has_temp_old_peci(data, nr) && val == 6) + extra |= 0x80; + else if (val != 0) + return -EINVAL; + + mutex_lock(&data->update_lock); + data->sensor = reg; + data->extra = extra; + it87_write_value(data, IT87_REG_TEMP_ENABLE, data->sensor); + if (has_temp_old_peci(data, nr)) + it87_write_value(data, IT87_REG_TEMP_EXTRA, data->extra); + data->valid = 0; /* Force cache refresh */ + mutex_unlock(&data->update_lock); + return count; +} + +static SENSOR_DEVICE_ATTR(temp1_type, S_IRUGO | S_IWUSR, show_temp_type, + set_temp_type, 0); +static SENSOR_DEVICE_ATTR(temp2_type, S_IRUGO | S_IWUSR, show_temp_type, + set_temp_type, 1); +static SENSOR_DEVICE_ATTR(temp3_type, S_IRUGO | S_IWUSR, show_temp_type, + set_temp_type, 2); + +/* 3 Fans */ + +static int pwm_mode(const struct it87_data *data, int nr) +{ + int ctrl = data->fan_main_ctrl & (1 << nr); + + if (ctrl == 0 && data->type != it8603) /* 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_2 *sattr = to_sensor_dev_attr_2(attr); + int nr = sattr->nr; + int index = sattr->index; + int speed; + struct it87_data *data = it87_update_device(dev); + + speed = has_16bit_fans(data) ? + FAN16_FROM_REG(data->fan[nr][index]) : + FAN_FROM_REG(data->fan[nr][index], + DIV_FROM_REG(data->fan_div[nr])); + return sprintf(buf, "%d\n", speed); +} + +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, 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; + unsigned int freq; + + freq = pwm_freq[index] / (has_newer_autopwm(data) ? 256 : 128); + + return sprintf(buf, "%u\n", freq); +} + +static ssize_t set_fan(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); + int nr = sattr->nr; + int index = sattr->index; + + struct it87_data *data = dev_get_drvdata(dev); + long val; + u8 reg; + + if (kstrtol(buf, 10, &val) < 0) + return -EINVAL; + + mutex_lock(&data->update_lock); + + if (has_16bit_fans(data)) { + data->fan[nr][index] = FAN16_TO_REG(val); + it87_write_value(data, IT87_REG_FAN_MIN[nr], + data->fan[nr][index] & 0xff); + it87_write_value(data, IT87_REG_FANX_MIN[nr], + data->fan[nr][index] >> 8); + } else { + 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[nr][index] = + FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr])); + it87_write_value(data, IT87_REG_FAN_MIN[nr], + data->fan[nr][index]); + } + + 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 (kstrtoul(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[nr][1], 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[nr][1] = FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr])); + it87_write_value(data, IT87_REG_FAN_MIN[nr], data->fan[nr][1]); + + 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 (kstrtol(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; + } + + /* IT8603E does not have on/off mode */ + if (val == 0 && data->type == it8603) + 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] = has_newer_autopwm(data) ? + data->pwm_temp_map[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]); + + if (data->type != it8603) { + /* 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 (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255) + return -EINVAL; + + mutex_lock(&data->update_lock); + if (has_newer_autopwm(data)) { + /* + * If we are in automatic mode, the PWM duty cycle register + * is read-only so we can't write the value. + */ + if (data->pwm_ctrl[nr] & 0x80) { + mutex_unlock(&data->update_lock); + return -EBUSY; + } + data->pwm_duty[nr] = pwm_to_reg(data, val); + it87_write_value(data, IT87_REG_PWM_DUTY(nr), + data->pwm_duty[nr]); + } else { + data->pwm_duty[nr] = pwm_to_reg(data, 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 (kstrtoul(buf, 10, &val) < 0) + return -EINVAL; + + val = clamp_val(val, 0, 1000000); + val *= has_newer_autopwm(data) ? 256 : 128; + + /* 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 (kstrtol(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, 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 (kstrtol(buf, 10, &val) < 0 || val < 0 || val > 255) + return -EINVAL; + + mutex_lock(&data->update_lock); + data->auto_pwm[nr][point] = pwm_to_reg(data, 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 (kstrtol(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; +} + +static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_fan, NULL, 0, 0); +static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_fan, set_fan, + 0, 1); +static SENSOR_DEVICE_ATTR(fan1_div, S_IRUGO | S_IWUSR, show_fan_div, + set_fan_div, 0); + +static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_fan, NULL, 1, 0); +static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_fan, set_fan, + 1, 1); +static SENSOR_DEVICE_ATTR(fan2_div, S_IRUGO | S_IWUSR, show_fan_div, + set_fan_div, 1); + +static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_fan, NULL, 2, 0); +static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_fan, set_fan, + 2, 1); +static SENSOR_DEVICE_ATTR(fan3_div, S_IRUGO | S_IWUSR, show_fan_div, + set_fan_div, 2); + +static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_fan, NULL, 3, 0); +static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_fan, set_fan, + 3, 1); + +static SENSOR_DEVICE_ATTR_2(fan5_input, S_IRUGO, show_fan, NULL, 4, 0); +static SENSOR_DEVICE_ATTR_2(fan5_min, S_IRUGO | S_IWUSR, show_fan, set_fan, + 4, 1); + +static SENSOR_DEVICE_ATTR_2(fan6_input, S_IRUGO, show_fan, NULL, 5, 0); +static SENSOR_DEVICE_ATTR_2(fan6_min, S_IRUGO | S_IWUSR, show_fan, set_fan, + 5, 1); + +static SENSOR_DEVICE_ATTR(pwm1_enable, S_IRUGO | S_IWUSR, + show_pwm_enable, set_pwm_enable, 0); +static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 0); +static DEVICE_ATTR(pwm1_freq, S_IRUGO | S_IWUSR, show_pwm_freq, set_pwm_freq); +static SENSOR_DEVICE_ATTR(pwm1_auto_channels_temp, S_IRUGO | S_IWUSR, + show_pwm_temp_map, set_pwm_temp_map, 0); +static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR, + show_auto_pwm, set_auto_pwm, 0, 0); +static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR, + show_auto_pwm, set_auto_pwm, 0, 1); +static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_pwm, S_IRUGO | S_IWUSR, + show_auto_pwm, set_auto_pwm, 0, 2); +static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_pwm, S_IRUGO, + show_auto_pwm, NULL, 0, 3); +static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp, S_IRUGO | S_IWUSR, + show_auto_temp, set_auto_temp, 0, 1); +static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_temp_hyst, S_IRUGO | S_IWUSR, + show_auto_temp, set_auto_temp, 0, 0); +static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_temp, S_IRUGO | S_IWUSR, + show_auto_temp, set_auto_temp, 0, 2); +static SENSOR_DEVICE_ATTR_2(pwm1_auto_point3_temp, S_IRUGO | S_IWUSR, + show_auto_temp, set_auto_temp, 0, 3); +static SENSOR_DEVICE_ATTR_2(pwm1_auto_point4_temp, S_IRUGO | S_IWUSR, + show_auto_temp, set_auto_temp, 0, 4); + +static SENSOR_DEVICE_ATTR(pwm2_enable, S_IRUGO | S_IWUSR, + show_pwm_enable, set_pwm_enable, 1); +static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 1); +static DEVICE_ATTR(pwm2_freq, S_IRUGO, show_pwm_freq, NULL); +static SENSOR_DEVICE_ATTR(pwm2_auto_channels_temp, S_IRUGO | S_IWUSR, + show_pwm_temp_map, set_pwm_temp_map, 1); +static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR, + show_auto_pwm, set_auto_pwm, 1, 0); +static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR, + show_auto_pwm, set_auto_pwm, 1, 1); +static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_pwm, S_IRUGO | S_IWUSR, + show_auto_pwm, set_auto_pwm, 1, 2); +static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_pwm, S_IRUGO, + show_auto_pwm, NULL, 1, 3); +static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp, S_IRUGO | S_IWUSR, + show_auto_temp, set_auto_temp, 1, 1); +static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_temp_hyst, S_IRUGO | S_IWUSR, + show_auto_temp, set_auto_temp, 1, 0); +static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_temp, S_IRUGO | S_IWUSR, + show_auto_temp, set_auto_temp, 1, 2); +static SENSOR_DEVICE_ATTR_2(pwm2_auto_point3_temp, S_IRUGO | S_IWUSR, + show_auto_temp, set_auto_temp, 1, 3); +static SENSOR_DEVICE_ATTR_2(pwm2_auto_point4_temp, S_IRUGO | S_IWUSR, + show_auto_temp, set_auto_temp, 1, 4); + +static SENSOR_DEVICE_ATTR(pwm3_enable, S_IRUGO | S_IWUSR, + show_pwm_enable, set_pwm_enable, 2); +static SENSOR_DEVICE_ATTR(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, 2); +static DEVICE_ATTR(pwm3_freq, S_IRUGO, show_pwm_freq, NULL); +static SENSOR_DEVICE_ATTR(pwm3_auto_channels_temp, S_IRUGO | S_IWUSR, + show_pwm_temp_map, set_pwm_temp_map, 2); +static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR, + show_auto_pwm, set_auto_pwm, 2, 0); +static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR, + show_auto_pwm, set_auto_pwm, 2, 1); +static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_pwm, S_IRUGO | S_IWUSR, + show_auto_pwm, set_auto_pwm, 2, 2); +static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_pwm, S_IRUGO, + show_auto_pwm, NULL, 2, 3); +static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp, S_IRUGO | S_IWUSR, + show_auto_temp, set_auto_temp, 2, 1); +static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_temp_hyst, S_IRUGO | S_IWUSR, + show_auto_temp, set_auto_temp, 2, 0); +static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_temp, S_IRUGO | S_IWUSR, + show_auto_temp, set_auto_temp, 2, 2); +static SENSOR_DEVICE_ATTR_2(pwm3_auto_point3_temp, S_IRUGO | S_IWUSR, + show_auto_temp, set_auto_temp, 2, 3); +static SENSOR_DEVICE_ATTR_2(pwm3_auto_point4_temp, S_IRUGO | S_IWUSR, + show_auto_temp, set_auto_temp, 2, 4); + +/* 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 ssize_t clear_intrusion(struct device *dev, struct device_attribute + *attr, const char *buf, size_t count) +{ + struct it87_data *data = dev_get_drvdata(dev); + long val; + int config; + + if (kstrtol(buf, 10, &val) < 0 || val != 0) + return -EINVAL; + + mutex_lock(&data->update_lock); + config = it87_read_value(data, IT87_REG_CONFIG); + if (config < 0) { + count = config; + } else { + config |= 1 << 5; + it87_write_value(data, IT87_REG_CONFIG, config); + /* Invalidate cache to force re-read */ + data->valid = 0; + } + mutex_unlock(&data->update_lock); + + return count; +} + +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(fan6_alarm, S_IRUGO, show_alarm, NULL, 7); +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 SENSOR_DEVICE_ATTR(intrusion0_alarm, S_IRUGO | S_IWUSR, + show_alarm, clear_intrusion, 4); + +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 (kstrtol(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(fan6_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 (kstrtoul(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_label(struct device *dev, struct device_attribute *attr, + char *buf) +{ + static const char * const labels[] = { + "+5V", + "5VSB", + "Vbat", + }; + static const char * const labels_it8721[] = { + "+3.3V", + "3VSB", + "Vbat", + }; + struct it87_data *data = dev_get_drvdata(dev); + int nr = to_sensor_dev_attr(attr)->index; + + return sprintf(buf, "%s\n", has_12mv_adc(data) ? labels_it8721[nr] + : labels[nr]); +} +static SENSOR_DEVICE_ATTR(in3_label, S_IRUGO, show_label, NULL, 0); +static SENSOR_DEVICE_ATTR(in7_label, S_IRUGO, show_label, NULL, 1); +static SENSOR_DEVICE_ATTR(in8_label, S_IRUGO, show_label, NULL, 2); +/* special AVCC3 IT8603E in9 */ +static SENSOR_DEVICE_ATTR(in9_label, S_IRUGO, show_label, NULL, 0); + +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_in[10][5] = { +{ + &sensor_dev_attr_in0_input.dev_attr.attr, + &sensor_dev_attr_in0_min.dev_attr.attr, + &sensor_dev_attr_in0_max.dev_attr.attr, + &sensor_dev_attr_in0_alarm.dev_attr.attr, + NULL +}, { + &sensor_dev_attr_in1_input.dev_attr.attr, + &sensor_dev_attr_in1_min.dev_attr.attr, + &sensor_dev_attr_in1_max.dev_attr.attr, + &sensor_dev_attr_in1_alarm.dev_attr.attr, + NULL +}, { + &sensor_dev_attr_in2_input.dev_attr.attr, + &sensor_dev_attr_in2_min.dev_attr.attr, + &sensor_dev_attr_in2_max.dev_attr.attr, + &sensor_dev_attr_in2_alarm.dev_attr.attr, + NULL +}, { + &sensor_dev_attr_in3_input.dev_attr.attr, + &sensor_dev_attr_in3_min.dev_attr.attr, + &sensor_dev_attr_in3_max.dev_attr.attr, + &sensor_dev_attr_in3_alarm.dev_attr.attr, + NULL +}, { + &sensor_dev_attr_in4_input.dev_attr.attr, + &sensor_dev_attr_in4_min.dev_attr.attr, + &sensor_dev_attr_in4_max.dev_attr.attr, + &sensor_dev_attr_in4_alarm.dev_attr.attr, + NULL +}, { + &sensor_dev_attr_in5_input.dev_attr.attr, + &sensor_dev_attr_in5_min.dev_attr.attr, + &sensor_dev_attr_in5_max.dev_attr.attr, + &sensor_dev_attr_in5_alarm.dev_attr.attr, + NULL +}, { + &sensor_dev_attr_in6_input.dev_attr.attr, + &sensor_dev_attr_in6_min.dev_attr.attr, + &sensor_dev_attr_in6_max.dev_attr.attr, + &sensor_dev_attr_in6_alarm.dev_attr.attr, + NULL +}, { + &sensor_dev_attr_in7_input.dev_attr.attr, + &sensor_dev_attr_in7_min.dev_attr.attr, + &sensor_dev_attr_in7_max.dev_attr.attr, + &sensor_dev_attr_in7_alarm.dev_attr.attr, + NULL +}, { + &sensor_dev_attr_in8_input.dev_attr.attr, + NULL +}, { + &sensor_dev_attr_in9_input.dev_attr.attr, + NULL +} }; + +static const struct attribute_group it87_group_in[10] = { + { .attrs = it87_attributes_in[0] }, + { .attrs = it87_attributes_in[1] }, + { .attrs = it87_attributes_in[2] }, + { .attrs = it87_attributes_in[3] }, + { .attrs = it87_attributes_in[4] }, + { .attrs = it87_attributes_in[5] }, + { .attrs = it87_attributes_in[6] }, + { .attrs = it87_attributes_in[7] }, + { .attrs = it87_attributes_in[8] }, + { .attrs = it87_attributes_in[9] }, +}; + +static struct attribute *it87_attributes_temp[3][6] = { +{ + &sensor_dev_attr_temp1_input.dev_attr.attr, + &sensor_dev_attr_temp1_max.dev_attr.attr, + &sensor_dev_attr_temp1_min.dev_attr.attr, + &sensor_dev_attr_temp1_type.dev_attr.attr, + &sensor_dev_attr_temp1_alarm.dev_attr.attr, + NULL +} , { + &sensor_dev_attr_temp2_input.dev_attr.attr, + &sensor_dev_attr_temp2_max.dev_attr.attr, + &sensor_dev_attr_temp2_min.dev_attr.attr, + &sensor_dev_attr_temp2_type.dev_attr.attr, + &sensor_dev_attr_temp2_alarm.dev_attr.attr, + NULL +} , { + &sensor_dev_attr_temp3_input.dev_attr.attr, + &sensor_dev_attr_temp3_max.dev_attr.attr, + &sensor_dev_attr_temp3_min.dev_attr.attr, + &sensor_dev_attr_temp3_type.dev_attr.attr, + &sensor_dev_attr_temp3_alarm.dev_attr.attr, + NULL +} }; + +static const struct attribute_group it87_group_temp[3] = { + { .attrs = it87_attributes_temp[0] }, + { .attrs = it87_attributes_temp[1] }, + { .attrs = it87_attributes_temp[2] }, +}; + +static struct attribute *it87_attributes_temp_offset[] = { + &sensor_dev_attr_temp1_offset.dev_attr.attr, + &sensor_dev_attr_temp2_offset.dev_attr.attr, + &sensor_dev_attr_temp3_offset.dev_attr.attr, +}; + +static struct attribute *it87_attributes[] = { + &dev_attr_alarms.attr, + &sensor_dev_attr_intrusion0_alarm.dev_attr.attr, + &dev_attr_name.attr, + NULL +}; + +static const struct attribute_group it87_group = { + .attrs = it87_attributes, +}; + +static struct attribute *it87_attributes_in_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, + NULL, + NULL, +}; + +static struct attribute *it87_attributes_temp_beep[] = { + &sensor_dev_attr_temp1_beep.dev_attr.attr, + &sensor_dev_attr_temp2_beep.dev_attr.attr, + &sensor_dev_attr_temp3_beep.dev_attr.attr, +}; + +static struct attribute *it87_attributes_fan[6][3+1] = { { + &sensor_dev_attr_fan1_input.dev_attr.attr, + &sensor_dev_attr_fan1_min.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_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_alarm.dev_attr.attr, + NULL +}, { + &sensor_dev_attr_fan4_input.dev_attr.attr, + &sensor_dev_attr_fan4_min.dev_attr.attr, + &sensor_dev_attr_fan4_alarm.dev_attr.attr, + NULL +}, { + &sensor_dev_attr_fan5_input.dev_attr.attr, + &sensor_dev_attr_fan5_min.dev_attr.attr, + &sensor_dev_attr_fan5_alarm.dev_attr.attr, + NULL +}, { + &sensor_dev_attr_fan6_input.dev_attr.attr, + &sensor_dev_attr_fan6_min.dev_attr.attr, + &sensor_dev_attr_fan6_alarm.dev_attr.attr, + NULL +} }; + +static const struct attribute_group it87_group_fan[6] = { + { .attrs = it87_attributes_fan[0] }, + { .attrs = it87_attributes_fan[1] }, + { .attrs = it87_attributes_fan[2] }, + { .attrs = it87_attributes_fan[3] }, + { .attrs = it87_attributes_fan[4] }, + { .attrs = it87_attributes_fan[5] }, +}; + +static const struct attribute *it87_attributes_fan_div[] = { + &sensor_dev_attr_fan1_div.dev_attr.attr, + &sensor_dev_attr_fan2_div.dev_attr.attr, + &sensor_dev_attr_fan3_div.dev_attr.attr, +}; + +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, + &sensor_dev_attr_fan6_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, +}; + +static struct attribute *it87_attributes_label[] = { + &sensor_dev_attr_in3_label.dev_attr.attr, + &sensor_dev_attr_in7_label.dev_attr.attr, + &sensor_dev_attr_in8_label.dev_attr.attr, + &sensor_dev_attr_in9_label.dev_attr.attr, + NULL +}; + +static const struct attribute_group it87_group_label = { + .attrs = it87_attributes_label, +}; + +/* 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; + u16 chip_type; + const char *board_vendor, *board_name; + const struct it87_devices *config; + + err = superio_enter(); + if (err) + return err; + + err = -ENODEV; + 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 IT8721F_DEVID: + sio_data->type = it8721; + break; + case IT8728F_DEVID: + sio_data->type = it8728; + break; + case IT8771E_DEVID: + sio_data->type = it8771; + break; + case IT8772E_DEVID: + sio_data->type = it8772; + break; + case IT8781F_DEVID: + sio_data->type = it8781; + break; + case IT8782F_DEVID: + sio_data->type = it8782; + break; + case IT8783E_DEVID: + sio_data->type = it8783; + break; + case IT8786E_DEVID: + sio_data->type = it8786; + break; + case IT8790E_DEVID: + sio_data->type = it8790; + break; + case IT8603E_DEVID: + case IT8623E_DEVID: + sio_data->type = it8603; + break; + case IT8620E_DEVID: + sio_data->type = it8620; + break; + case 0xffff: /* No device at all */ + goto exit; + default: + pr_debug("Unsupported chip (DEVID=0x%x)\n", chip_type); + goto exit; + } + + superio_select(PME); + if (!(superio_inb(IT87_ACT_REG) & 0x01)) { + pr_info("Device not activated, skipping\n"); + goto exit; + } + + *address = superio_inw(IT87_BASE_REG) & ~(IT87_EXTENT - 1); + if (*address == 0) { + pr_info("Base address not set, skipping\n"); + goto exit; + } + + err = 0; + sio_data->revision = superio_inb(DEVREV) & 0x0f; + pr_info("Found IT%04x%s chip at 0x%x, revision %d\n", chip_type, + it87_devices[sio_data->type].suffix, + *address, sio_data->revision); + + config = &it87_devices[sio_data->type]; + + /* in7 (VSB or VCCH5V) is always internal on some chips */ + if (has_in7_internal(config)) + sio_data->internal |= (1 << 1); + + /* in8 (Vbat) is always internal */ + sio_data->internal |= (1 << 2); + + /* Only the IT8603E has in9 */ + if (sio_data->type != it8603) + sio_data->skip_in |= (1 << 9); + + if (!has_vid(config)) + sio_data->skip_vid = 1; + + /* Read GPIO config and VID value from LDN 7 (GPIO) */ + if (sio_data->type == it87) { + /* 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 if (sio_data->type == it8783) { + int reg25, reg27, reg2a, reg2c, regef; + + superio_select(GPIO); + + reg25 = superio_inb(IT87_SIO_GPIO1_REG); + reg27 = superio_inb(IT87_SIO_GPIO3_REG); + reg2a = superio_inb(IT87_SIO_PINX1_REG); + reg2c = superio_inb(IT87_SIO_PINX2_REG); + regef = superio_inb(IT87_SIO_SPI_REG); + + /* Check if fan3 is there or not */ + if ((reg27 & (1 << 0)) || !(reg2c & (1 << 2))) + sio_data->skip_fan |= (1 << 2); + if ((reg25 & (1 << 4)) + || (!(reg2a & (1 << 1)) && (regef & (1 << 0)))) + sio_data->skip_pwm |= (1 << 2); + + /* Check if fan2 is there or not */ + if (reg27 & (1 << 7)) + sio_data->skip_fan |= (1 << 1); + if (reg27 & (1 << 3)) + sio_data->skip_pwm |= (1 << 1); + + /* VIN5 */ + if ((reg27 & (1 << 0)) || (reg2c & (1 << 2))) + sio_data->skip_in |= (1 << 5); /* No VIN5 */ + + /* VIN6 */ + if (reg27 & (1 << 1)) + sio_data->skip_in |= (1 << 6); /* No VIN6 */ + + /* + * VIN7 + * Does not depend on bit 2 of Reg2C, contrary to datasheet. + */ + if (reg27 & (1 << 2)) { + /* + * The data sheet is a bit unclear regarding the + * internal voltage divider for VCCH5V. It says + * "This bit enables and switches VIN7 (pin 91) to the + * internal voltage divider for VCCH5V". + * This is different to other chips, where the internal + * voltage divider would connect VIN7 to an internal + * voltage source. Maybe that is the case here as well. + * + * Since we don't know for sure, re-route it if that is + * not the case, and ask the user to report if the + * resulting voltage is sane. + */ + if (!(reg2c & (1 << 1))) { + reg2c |= (1 << 1); + superio_outb(IT87_SIO_PINX2_REG, reg2c); + pr_notice("Routing internal VCCH5V to in7.\n"); + } + pr_notice("in7 routed to internal voltage divider, with external pin disabled.\n"); + pr_notice("Please report if it displays a reasonable voltage.\n"); + } + + if (reg2c & (1 << 0)) + sio_data->internal |= (1 << 0); + if (reg2c & (1 << 1)) + sio_data->internal |= (1 << 1); + + sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f; + } else if (sio_data->type == it8603) { + int reg27, reg29; + + superio_select(GPIO); + + reg27 = superio_inb(IT87_SIO_GPIO3_REG); + + /* Check if fan3 is there or not */ + if (reg27 & (1 << 6)) + sio_data->skip_pwm |= (1 << 2); + if (reg27 & (1 << 7)) + sio_data->skip_fan |= (1 << 2); + + /* Check if fan2 is there or not */ + reg29 = superio_inb(IT87_SIO_GPIO5_REG); + if (reg29 & (1 << 1)) + sio_data->skip_pwm |= (1 << 1); + if (reg29 & (1 << 2)) + sio_data->skip_fan |= (1 << 1); + + sio_data->skip_in |= (1 << 5); /* No VIN5 */ + sio_data->skip_in |= (1 << 6); /* No VIN6 */ + + sio_data->internal |= (1 << 3); /* in9 is AVCC */ + + sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f; + } else if (sio_data->type == it8620) { + int reg; + + superio_select(GPIO); + + /* Check for fan4, fan5 */ + reg = superio_inb(IT87_SIO_GPIO2_REG); + if (!(reg & (1 << 5))) + sio_data->skip_fan |= (1 << 3); + if (!(reg & (1 << 4))) + sio_data->skip_fan |= (1 << 4); + + /* Check for pwm3, fan3 */ + reg = superio_inb(IT87_SIO_GPIO3_REG); + if (reg & (1 << 6)) + sio_data->skip_pwm |= (1 << 2); + if (reg & (1 << 7)) + sio_data->skip_fan |= (1 << 2); + + /* Check for pwm2, fan2 */ + 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); + + sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f; + } else { + int reg; + bool uart6; + + superio_select(GPIO); + + reg = superio_inb(IT87_SIO_GPIO3_REG); + if (!sio_data->skip_vid) { + /* We need at least 4 VID pins */ + if (reg & 0x0f) { + pr_info("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); + + uart6 = sio_data->type == it8782 && (reg & (1 << 2)); + + /* + * The IT8720F has no VIN7 pin, so VCCH should always be + * routed internally to VIN7 with an internal divider. + * Curiously, there still is a configuration bit to control + * this, which means it can be set incorrectly. And even + * more curiously, many boards out there are improperly + * configured, even though the IT8720F datasheet claims + * that the internal routing of VCCH to VIN7 is the default + * setting. So we force the internal routing in this case. + * + * On IT8782F, VIN7 is multiplexed with one of the UART6 pins. + * If UART6 is enabled, re-route VIN7 to the internal divider + * if that is not already the case. + */ + if ((sio_data->type == it8720 || uart6) && !(reg & (1 << 1))) { + reg |= (1 << 1); + superio_outb(IT87_SIO_PINX2_REG, reg); + pr_notice("Routing internal VCCH to in7\n"); + } + if (reg & (1 << 0)) + sio_data->internal |= (1 << 0); + if (reg & (1 << 1)) + sio_data->internal |= (1 << 1); + + /* + * On IT8782F, UART6 pins overlap with VIN5, VIN6, and VIN7. + * While VIN7 can be routed to the internal voltage divider, + * VIN5 and VIN6 are not available if UART6 is enabled. + * + * Also, temp3 is not available if UART6 is enabled and TEMPIN3 + * is the temperature source. Since we can not read the + * temperature source here, skip_temp is preliminary. + */ + if (uart6) { + sio_data->skip_in |= (1 << 5) | (1 << 6); + sio_data->skip_temp |= (1 << 2); + } + + sio_data->beep_pin = superio_inb(IT87_SIO_BEEP_PIN_REG) & 0x3f; + } + if (sio_data->beep_pin) + pr_info("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("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_get_platdata(dev); + int i; + + sysfs_remove_group(&dev->kobj, &it87_group); + for (i = 0; i < 10; i++) { + if (sio_data->skip_in & (1 << i)) + continue; + sysfs_remove_group(&dev->kobj, &it87_group_in[i]); + if (it87_attributes_in_beep[i]) + sysfs_remove_file(&dev->kobj, + it87_attributes_in_beep[i]); + } + for (i = 0; i < 3; i++) { + if (!(data->has_temp & (1 << i))) + continue; + sysfs_remove_group(&dev->kobj, &it87_group_temp[i]); + if (has_temp_offset(data)) + sysfs_remove_file(&dev->kobj, + it87_attributes_temp_offset[i]); + if (sio_data->beep_pin) + sysfs_remove_file(&dev->kobj, + it87_attributes_temp_beep[i]); + } + for (i = 0; i < 6; i++) { + if (!(data->has_fan & (1 << i))) + continue; + sysfs_remove_group(&dev->kobj, &it87_group_fan[i]); + if (sio_data->beep_pin) + sysfs_remove_file(&dev->kobj, + it87_attributes_fan_beep[i]); + if (i < 3 && !has_16bit_fans(data)) + sysfs_remove_file(&dev->kobj, + it87_attributes_fan_div[i]); + } + for (i = 0; i < 3; i++) { + if (sio_data->skip_pwm & (1 << i)) + 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); + sysfs_remove_group(&dev->kobj, &it87_group_label); +} + +static int 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_get_platdata(dev); + int err = 0, i; + int enable_pwm_interface; + int fan_beep_need_rw; + + res = platform_get_resource(pdev, IORESOURCE_IO, 0); + if (!devm_request_region(&pdev->dev, 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)); + return -EBUSY; + } + + data = devm_kzalloc(&pdev->dev, sizeof(struct it87_data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + data->addr = res->start; + data->type = sio_data->type; + data->features = it87_devices[sio_data->type].features; + data->peci_mask = it87_devices[sio_data->type].peci_mask; + data->old_peci_mask = it87_devices[sio_data->type].old_peci_mask; + data->name = it87_devices[sio_data->type].name; + /* + * 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 16-bit tachometer support. + */ + switch (data->type) { + case it87: + if (sio_data->revision >= 0x03) { + data->features &= ~FEAT_OLD_AUTOPWM; + data->features |= FEAT_FAN16_CONFIG | FEAT_16BIT_FANS; + } + break; + case it8712: + if (sio_data->revision >= 0x08) { + data->features &= ~FEAT_OLD_AUTOPWM; + data->features |= FEAT_FAN16_CONFIG | FEAT_16BIT_FANS | + FEAT_FIVE_FANS; + } + break; + default: + break; + } + + /* Now, we do the remaining detection. */ + if ((it87_read_value(data, IT87_REG_CONFIG) & 0x80) + || it87_read_value(data, IT87_REG_CHIPID) != 0x90) + return -ENODEV; + + platform_set_drvdata(pdev, data); + + mutex_init(&data->update_lock); + + /* Check PWM configuration */ + enable_pwm_interface = it87_check_pwm(dev); + + /* Starting with IT8721F, we handle scaling of internal voltages */ + if (has_12mv_adc(data)) { + if (sio_data->internal & (1 << 0)) + data->in_scaled |= (1 << 3); /* in3 is AVCC */ + if (sio_data->internal & (1 << 1)) + data->in_scaled |= (1 << 7); /* in7 is VSB */ + if (sio_data->internal & (1 << 2)) + data->in_scaled |= (1 << 8); /* in8 is Vbat */ + if (sio_data->internal & (1 << 3)) + data->in_scaled |= (1 << 9); /* in9 is AVCC */ + } else if (sio_data->type == it8781 || sio_data->type == it8782 || + sio_data->type == it8783) { + if (sio_data->internal & (1 << 0)) + data->in_scaled |= (1 << 3); /* in3 is VCC5V */ + if (sio_data->internal & (1 << 1)) + data->in_scaled |= (1 << 7); /* in7 is VCCH5V */ + } + + data->has_temp = 0x07; + if (sio_data->skip_temp & (1 << 2)) { + if (sio_data->type == it8782 + && !(it87_read_value(data, IT87_REG_TEMP_EXTRA) & 0x80)) + data->has_temp &= ~(1 << 2); + } + + /* Initialize the IT87 chip */ + it87_init_device(pdev); + + /* Register sysfs hooks */ + err = sysfs_create_group(&dev->kobj, &it87_group); + if (err) + return err; + + for (i = 0; i < 10; i++) { + if (sio_data->skip_in & (1 << i)) + continue; + err = sysfs_create_group(&dev->kobj, &it87_group_in[i]); + if (err) + goto error; + if (sio_data->beep_pin && it87_attributes_in_beep[i]) { + err = sysfs_create_file(&dev->kobj, + it87_attributes_in_beep[i]); + if (err) + goto error; + } + } + + for (i = 0; i < 3; i++) { + if (!(data->has_temp & (1 << i))) + continue; + err = sysfs_create_group(&dev->kobj, &it87_group_temp[i]); + if (err) + goto error; + if (has_temp_offset(data)) { + err = sysfs_create_file(&dev->kobj, + it87_attributes_temp_offset[i]); + if (err) + goto error; + } + if (sio_data->beep_pin) { + err = sysfs_create_file(&dev->kobj, + it87_attributes_temp_beep[i]); + if (err) + goto error; + } + } + + /* Do not create fan files for disabled fans */ + fan_beep_need_rw = 1; + for (i = 0; i < 6; i++) { + if (!(data->has_fan & (1 << i))) + continue; + err = sysfs_create_group(&dev->kobj, &it87_group_fan[i]); + if (err) + goto error; + + if (i < 3 && !has_16bit_fans(data)) { + err = sysfs_create_file(&dev->kobj, + it87_attributes_fan_div[i]); + if (err) + goto error; + } + + if (sio_data->beep_pin) { + err = sysfs_create_file(&dev->kobj, + it87_attributes_fan_beep[i]); + if (err) + goto error; + 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 error; + + if (!has_old_autopwm(data)) + continue; + err = sysfs_create_group(&dev->kobj, + &it87_group_autopwm[i]); + if (err) + goto error; + } + } + + 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 error; + } + + /* Export labels for internal sensors */ + for (i = 0; i < 4; i++) { + if (!(sio_data->internal & (1 << i))) + continue; + err = sysfs_create_file(&dev->kobj, + it87_attributes_label[i]); + if (err) + goto error; + } + + data->hwmon_dev = hwmon_device_register(dev); + if (IS_ERR(data->hwmon_dev)) { + err = PTR_ERR(data->hwmon_dev); + goto error; + } + + return 0; + +error: + it87_remove_files(dev); + return err; +} + +static int 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); + + 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 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 it87_init_device(struct platform_device *pdev) +{ + struct it87_sio_data *sio_data = dev_get_platdata(&pdev->dev); + 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. + * Note that this is no longer needed for the IT8721F and later, as + * these have separate registers for the temperature mapping and the + * manual duty cycle. + */ + 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; + + tmp = it87_read_value(data, IT87_REG_FAN_16BIT); + + /* Set tachometers to 16-bit mode if needed */ + if (has_fan16_config(data)) { + 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); + } + } + + /* Check for additional fans */ + if (has_five_fans(data)) { + if (tmp & (1 << 4)) + data->has_fan |= (1 << 3); /* fan4 enabled */ + if (tmp & (1 << 5)) + data->has_fan |= (1 << 4); /* fan5 enabled */ + if (has_six_fans(data) && (tmp & (1 << 2))) + data->has_fan |= (1 << 5); /* fan6 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) & 0x3e) + | (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 (has_newer_autopwm(data)) { + data->pwm_temp_map[nr] = data->pwm_ctrl[nr] & 0x03; + data->pwm_duty[nr] = it87_read_value(data, + IT87_REG_PWM_DUTY(nr)); + } else { + 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][0] = + it87_read_value(data, IT87_REG_VIN(i)); + data->in[i][1] = + it87_read_value(data, IT87_REG_VIN_MIN(i)); + data->in[i][2] = + it87_read_value(data, IT87_REG_VIN_MAX(i)); + } + /* in8 (battery) has no limit registers */ + data->in[8][0] = it87_read_value(data, IT87_REG_VIN(8)); + if (data->type == it8603) + data->in[9][0] = it87_read_value(data, 0x2f); + + for (i = 0; i < 6; i++) { + /* Skip disabled fans */ + if (!(data->has_fan & (1 << i))) + continue; + + data->fan[i][1] = + it87_read_value(data, IT87_REG_FAN_MIN[i]); + data->fan[i][0] = it87_read_value(data, + IT87_REG_FAN[i]); + /* Add high byte if in 16-bit mode */ + if (has_16bit_fans(data)) { + data->fan[i][0] |= it87_read_value(data, + IT87_REG_FANX[i]) << 8; + data->fan[i][1] |= it87_read_value(data, + IT87_REG_FANX_MIN[i]) << 8; + } + } + for (i = 0; i < 3; i++) { + if (!(data->has_temp & (1 << i))) + continue; + data->temp[i][0] = + it87_read_value(data, IT87_REG_TEMP(i)); + data->temp[i][1] = + it87_read_value(data, IT87_REG_TEMP_LOW(i)); + data->temp[i][2] = + it87_read_value(data, IT87_REG_TEMP_HIGH(i)); + if (has_temp_offset(data)) + data->temp[i][3] = + it87_read_value(data, + IT87_REG_TEMP_OFFSET[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); + data->extra = it87_read_value(data, IT87_REG_TEMP_EXTRA); + /* + * The IT8705F does not have VID capability. + * The IT8718F and later 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; + pr_err("Device allocation failed\n"); + goto exit; + } + + err = platform_device_add_resources(pdev, &res, 1); + if (err) { + pr_err("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) { + pr_err("Platform data allocation failed\n"); + goto exit_device_put; + } + + err = platform_device_add(pdev); + if (err) { + pr_err("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 <jdelvare@suse.de>"); +MODULE_DESCRIPTION("IT8705F/IT871xF/IT872xF hardware monitoring 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); |