diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/hwmon/it87.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/hwmon/it87.c | 2377 |
1 files changed, 0 insertions, 2377 deletions
diff --git a/ANDROID_3.4.5/drivers/hwmon/it87.c b/ANDROID_3.4.5/drivers/hwmon/it87.c deleted file mode 100644 index 0b204e4c..00000000 --- a/ANDROID_3.4.5/drivers/hwmon/it87.c +++ /dev/null @@ -1,2377 +0,0 @@ -/* - * 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 - * 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 - * 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. - */ - -#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 }; - -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 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 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 }; -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_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_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_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 */ - 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 */ - - u16 in_scaled; /* Internal voltage sensors are scaled */ - 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 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 inline int has_12mv_adc(const struct it87_data *data) -{ - /* - * IT8721F and later have a 12 mV ADC, also with internal scaling - * on selected inputs. - */ - return data->type == it8721 - || data->type == it8728; -} - -static inline int has_newer_autopwm(const struct it87_data *data) -{ - /* - * IT8721F and later have separate registers for the temperature - * mapping and the manual duty cycle. - */ - return data->type == it8721 - || data->type == it8728; -} - -static u8 in_to_reg(const struct it87_data *data, int nr, long val) -{ - long lsb; - - if (has_12mv_adc(data)) { - if (data->in_scaled & (1 << nr)) - lsb = 24; - else - lsb = 12; - } else - lsb = 16; - - val = DIV_ROUND_CLOSEST(val, lsb); - return SENSORS_LIMIT(val, 0, 255); -} - -static int in_from_reg(const struct it87_data *data, int nr, int val) -{ - if (has_12mv_adc(data)) { - if (data->in_scaled & (1 << nr)) - return val * 24; - else - return val * 12; - } else - return 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) - -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)) - -static const unsigned int pwm_freq[8] = { - 48000000 / 128, - 24000000 / 128, - 12000000 / 128, - 8000000 / 128, - 6000000 / 128, - 3000000 / 128, - 1500000 / 128, - 750000 / 128, -}; - -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 16-bit tachometer support. - */ - return (data->type == it87 && data->revision >= 0x03) - || (data->type == it8712 && data->revision >= 0x08) - || data->type == it8716 - || data->type == it8718 - || data->type == it8720 - || data->type == it8721 - || data->type == it8728; -} - -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, nr, 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, nr, 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, nr, 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 (kstrtoul(buf, 10, &val) < 0) - return -EINVAL; - - mutex_lock(&data->update_lock); - data->in_min[nr] = in_to_reg(data, nr, 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 (kstrtoul(buf, 10, &val) < 0) - return -EINVAL; - - mutex_lock(&data->update_lock); - data->in_max[nr] = in_to_reg(data, nr, 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 (kstrtol(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 (kstrtol(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 value is updated while used */ - - 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 (kstrtol(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); - data->valid = 0; /* Force cache refresh */ - 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, 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 (kstrtol(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 (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_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 (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; - } - - 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]); - /* 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; - - /* 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; -} - -#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 (kstrtol(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 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(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(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); - -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, - &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_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, -}; - -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, - 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; - - 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 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%04xF chip at 0x%x, revision %d\n", - chip_type, *address, sio_data->revision); - - /* in8 (Vbat) is always internal */ - sio_data->internal = (1 << 2); - - /* 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); - - reg = superio_inb(IT87_SIO_GPIO3_REG); - if (sio_data->type == it8721 || sio_data->type == it8728) { - /* - * The IT8721F/IT8758E doesn't have VID pins at all, - * not sure about the IT8728F. - */ - sio_data->skip_vid = 1; - } else { - /* 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); - /* - * 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. - */ - if (sio_data->type == it8720 && !(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->type == it8721 || - sio_data->type == it8728) - sio_data->internal |= (1 << 1); - - 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->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); - sysfs_remove_group(&dev->kobj, &it87_group_label); -} - -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 * const names[] = { - "it87", - "it8712", - "it8716", - "it8718", - "it8720", - "it8721", - "it8728", - }; - - 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); - - /* 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 */ - } - - /* 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; - } - - /* Export labels for internal sensors */ - for (i = 0; i < 3; i++) { - if (!(sio_data->internal & (1 << i))) - continue; - err = sysfs_create_file(&dev->kobj, - it87_attributes_label[i]); - 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. - * 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; - - /* 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 (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] = - 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 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 <khali@linux-fr.org>"); -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); |