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-rw-r--r--kernel/drivers/char/i8k.c1023
1 files changed, 0 insertions, 1023 deletions
diff --git a/kernel/drivers/char/i8k.c b/kernel/drivers/char/i8k.c
deleted file mode 100644
index 3c1a123f9..000000000
--- a/kernel/drivers/char/i8k.c
+++ /dev/null
@@ -1,1023 +0,0 @@
-/*
- * i8k.c -- Linux driver for accessing the SMM BIOS on Dell laptops.
- *
- * Copyright (C) 2001 Massimo Dal Zotto <dz@debian.org>
- *
- * Hwmon integration:
- * Copyright (C) 2011 Jean Delvare <jdelvare@suse.de>
- * Copyright (C) 2013, 2014 Guenter Roeck <linux@roeck-us.net>
- * Copyright (C) 2014 Pali Rohár <pali.rohar@gmail.com>
- *
- * 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, 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.
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/delay.h>
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/init.h>
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
-#include <linux/dmi.h>
-#include <linux/capability.h>
-#include <linux/mutex.h>
-#include <linux/hwmon.h>
-#include <linux/hwmon-sysfs.h>
-#include <linux/uaccess.h>
-#include <linux/io.h>
-#include <linux/sched.h>
-
-#include <linux/i8k.h>
-
-#define I8K_SMM_FN_STATUS 0x0025
-#define I8K_SMM_POWER_STATUS 0x0069
-#define I8K_SMM_SET_FAN 0x01a3
-#define I8K_SMM_GET_FAN 0x00a3
-#define I8K_SMM_GET_SPEED 0x02a3
-#define I8K_SMM_GET_FAN_TYPE 0x03a3
-#define I8K_SMM_GET_NOM_SPEED 0x04a3
-#define I8K_SMM_GET_TEMP 0x10a3
-#define I8K_SMM_GET_TEMP_TYPE 0x11a3
-#define I8K_SMM_GET_DELL_SIG1 0xfea3
-#define I8K_SMM_GET_DELL_SIG2 0xffa3
-
-#define I8K_FAN_MULT 30
-#define I8K_FAN_MAX_RPM 30000
-#define I8K_MAX_TEMP 127
-
-#define I8K_FN_NONE 0x00
-#define I8K_FN_UP 0x01
-#define I8K_FN_DOWN 0x02
-#define I8K_FN_MUTE 0x04
-#define I8K_FN_MASK 0x07
-#define I8K_FN_SHIFT 8
-
-#define I8K_POWER_AC 0x05
-#define I8K_POWER_BATTERY 0x01
-
-static DEFINE_MUTEX(i8k_mutex);
-static char bios_version[4];
-static struct device *i8k_hwmon_dev;
-static u32 i8k_hwmon_flags;
-static uint i8k_fan_mult = I8K_FAN_MULT;
-static uint i8k_pwm_mult;
-static uint i8k_fan_max = I8K_FAN_HIGH;
-
-#define I8K_HWMON_HAVE_TEMP1 (1 << 0)
-#define I8K_HWMON_HAVE_TEMP2 (1 << 1)
-#define I8K_HWMON_HAVE_TEMP3 (1 << 2)
-#define I8K_HWMON_HAVE_TEMP4 (1 << 3)
-#define I8K_HWMON_HAVE_FAN1 (1 << 4)
-#define I8K_HWMON_HAVE_FAN2 (1 << 5)
-
-MODULE_AUTHOR("Massimo Dal Zotto (dz@debian.org)");
-MODULE_DESCRIPTION("Driver for accessing SMM BIOS on Dell laptops");
-MODULE_LICENSE("GPL");
-
-static bool force;
-module_param(force, bool, 0);
-MODULE_PARM_DESC(force, "Force loading without checking for supported models");
-
-static bool ignore_dmi;
-module_param(ignore_dmi, bool, 0);
-MODULE_PARM_DESC(ignore_dmi, "Continue probing hardware even if DMI data does not match");
-
-static bool restricted;
-module_param(restricted, bool, 0);
-MODULE_PARM_DESC(restricted, "Allow fan control if SYS_ADMIN capability set");
-
-static bool power_status;
-module_param(power_status, bool, 0600);
-MODULE_PARM_DESC(power_status, "Report power status in /proc/i8k");
-
-static uint fan_mult;
-module_param(fan_mult, uint, 0);
-MODULE_PARM_DESC(fan_mult, "Factor to multiply fan speed with (default: autodetect)");
-
-static uint fan_max;
-module_param(fan_max, uint, 0);
-MODULE_PARM_DESC(fan_max, "Maximum configurable fan speed (default: autodetect)");
-
-static int i8k_open_fs(struct inode *inode, struct file *file);
-static long i8k_ioctl(struct file *, unsigned int, unsigned long);
-
-static const struct file_operations i8k_fops = {
- .owner = THIS_MODULE,
- .open = i8k_open_fs,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- .unlocked_ioctl = i8k_ioctl,
-};
-
-struct smm_regs {
- unsigned int eax;
- unsigned int ebx __packed;
- unsigned int ecx __packed;
- unsigned int edx __packed;
- unsigned int esi __packed;
- unsigned int edi __packed;
-};
-
-static inline const char *i8k_get_dmi_data(int field)
-{
- const char *dmi_data = dmi_get_system_info(field);
-
- return dmi_data && *dmi_data ? dmi_data : "?";
-}
-
-/*
- * Call the System Management Mode BIOS. Code provided by Jonathan Buzzard.
- */
-static int i8k_smm(struct smm_regs *regs)
-{
- int rc;
- int eax = regs->eax;
- cpumask_var_t old_mask;
-
- /* SMM requires CPU 0 */
- if (!alloc_cpumask_var(&old_mask, GFP_KERNEL))
- return -ENOMEM;
- cpumask_copy(old_mask, &current->cpus_allowed);
- rc = set_cpus_allowed_ptr(current, cpumask_of(0));
- if (rc)
- goto out;
- if (smp_processor_id() != 0) {
- rc = -EBUSY;
- goto out;
- }
-
-#if defined(CONFIG_X86_64)
- asm volatile("pushq %%rax\n\t"
- "movl 0(%%rax),%%edx\n\t"
- "pushq %%rdx\n\t"
- "movl 4(%%rax),%%ebx\n\t"
- "movl 8(%%rax),%%ecx\n\t"
- "movl 12(%%rax),%%edx\n\t"
- "movl 16(%%rax),%%esi\n\t"
- "movl 20(%%rax),%%edi\n\t"
- "popq %%rax\n\t"
- "out %%al,$0xb2\n\t"
- "out %%al,$0x84\n\t"
- "xchgq %%rax,(%%rsp)\n\t"
- "movl %%ebx,4(%%rax)\n\t"
- "movl %%ecx,8(%%rax)\n\t"
- "movl %%edx,12(%%rax)\n\t"
- "movl %%esi,16(%%rax)\n\t"
- "movl %%edi,20(%%rax)\n\t"
- "popq %%rdx\n\t"
- "movl %%edx,0(%%rax)\n\t"
- "pushfq\n\t"
- "popq %%rax\n\t"
- "andl $1,%%eax\n"
- : "=a"(rc)
- : "a"(regs)
- : "%ebx", "%ecx", "%edx", "%esi", "%edi", "memory");
-#else
- asm volatile("pushl %%eax\n\t"
- "movl 0(%%eax),%%edx\n\t"
- "push %%edx\n\t"
- "movl 4(%%eax),%%ebx\n\t"
- "movl 8(%%eax),%%ecx\n\t"
- "movl 12(%%eax),%%edx\n\t"
- "movl 16(%%eax),%%esi\n\t"
- "movl 20(%%eax),%%edi\n\t"
- "popl %%eax\n\t"
- "out %%al,$0xb2\n\t"
- "out %%al,$0x84\n\t"
- "xchgl %%eax,(%%esp)\n\t"
- "movl %%ebx,4(%%eax)\n\t"
- "movl %%ecx,8(%%eax)\n\t"
- "movl %%edx,12(%%eax)\n\t"
- "movl %%esi,16(%%eax)\n\t"
- "movl %%edi,20(%%eax)\n\t"
- "popl %%edx\n\t"
- "movl %%edx,0(%%eax)\n\t"
- "lahf\n\t"
- "shrl $8,%%eax\n\t"
- "andl $1,%%eax\n"
- : "=a"(rc)
- : "a"(regs)
- : "%ebx", "%ecx", "%edx", "%esi", "%edi", "memory");
-#endif
- if (rc != 0 || (regs->eax & 0xffff) == 0xffff || regs->eax == eax)
- rc = -EINVAL;
-
-out:
- set_cpus_allowed_ptr(current, old_mask);
- free_cpumask_var(old_mask);
- return rc;
-}
-
-/*
- * Read the Fn key status.
- */
-static int i8k_get_fn_status(void)
-{
- struct smm_regs regs = { .eax = I8K_SMM_FN_STATUS, };
- int rc;
-
- rc = i8k_smm(&regs);
- if (rc < 0)
- return rc;
-
- switch ((regs.eax >> I8K_FN_SHIFT) & I8K_FN_MASK) {
- case I8K_FN_UP:
- return I8K_VOL_UP;
- case I8K_FN_DOWN:
- return I8K_VOL_DOWN;
- case I8K_FN_MUTE:
- return I8K_VOL_MUTE;
- default:
- return 0;
- }
-}
-
-/*
- * Read the power status.
- */
-static int i8k_get_power_status(void)
-{
- struct smm_regs regs = { .eax = I8K_SMM_POWER_STATUS, };
- int rc;
-
- rc = i8k_smm(&regs);
- if (rc < 0)
- return rc;
-
- return (regs.eax & 0xff) == I8K_POWER_AC ? I8K_AC : I8K_BATTERY;
-}
-
-/*
- * Read the fan status.
- */
-static int i8k_get_fan_status(int fan)
-{
- struct smm_regs regs = { .eax = I8K_SMM_GET_FAN, };
-
- regs.ebx = fan & 0xff;
- return i8k_smm(&regs) ? : regs.eax & 0xff;
-}
-
-/*
- * Read the fan speed in RPM.
- */
-static int i8k_get_fan_speed(int fan)
-{
- struct smm_regs regs = { .eax = I8K_SMM_GET_SPEED, };
-
- regs.ebx = fan & 0xff;
- return i8k_smm(&regs) ? : (regs.eax & 0xffff) * i8k_fan_mult;
-}
-
-/*
- * Read the fan type.
- */
-static int i8k_get_fan_type(int fan)
-{
- struct smm_regs regs = { .eax = I8K_SMM_GET_FAN_TYPE, };
-
- regs.ebx = fan & 0xff;
- return i8k_smm(&regs) ? : regs.eax & 0xff;
-}
-
-/*
- * Read the fan nominal rpm for specific fan speed.
- */
-static int i8k_get_fan_nominal_speed(int fan, int speed)
-{
- struct smm_regs regs = { .eax = I8K_SMM_GET_NOM_SPEED, };
-
- regs.ebx = (fan & 0xff) | (speed << 8);
- return i8k_smm(&regs) ? : (regs.eax & 0xffff) * i8k_fan_mult;
-}
-
-/*
- * Set the fan speed (off, low, high). Returns the new fan status.
- */
-static int i8k_set_fan(int fan, int speed)
-{
- struct smm_regs regs = { .eax = I8K_SMM_SET_FAN, };
-
- speed = (speed < 0) ? 0 : ((speed > i8k_fan_max) ? i8k_fan_max : speed);
- regs.ebx = (fan & 0xff) | (speed << 8);
-
- return i8k_smm(&regs) ? : i8k_get_fan_status(fan);
-}
-
-static int i8k_get_temp_type(int sensor)
-{
- struct smm_regs regs = { .eax = I8K_SMM_GET_TEMP_TYPE, };
-
- regs.ebx = sensor & 0xff;
- return i8k_smm(&regs) ? : regs.eax & 0xff;
-}
-
-/*
- * Read the cpu temperature.
- */
-static int _i8k_get_temp(int sensor)
-{
- struct smm_regs regs = {
- .eax = I8K_SMM_GET_TEMP,
- .ebx = sensor & 0xff,
- };
-
- return i8k_smm(&regs) ? : regs.eax & 0xff;
-}
-
-static int i8k_get_temp(int sensor)
-{
- int temp = _i8k_get_temp(sensor);
-
- /*
- * Sometimes the temperature sensor returns 0x99, which is out of range.
- * In this case we retry (once) before returning an error.
- # 1003655137 00000058 00005a4b
- # 1003655138 00000099 00003a80 <--- 0x99 = 153 degrees
- # 1003655139 00000054 00005c52
- */
- if (temp == 0x99) {
- msleep(100);
- temp = _i8k_get_temp(sensor);
- }
- /*
- * Return -ENODATA for all invalid temperatures.
- *
- * Known instances are the 0x99 value as seen above as well as
- * 0xc1 (193), which may be returned when trying to read the GPU
- * temperature if the system supports a GPU and it is currently
- * turned off.
- */
- if (temp > I8K_MAX_TEMP)
- return -ENODATA;
-
- return temp;
-}
-
-static int i8k_get_dell_signature(int req_fn)
-{
- struct smm_regs regs = { .eax = req_fn, };
- int rc;
-
- rc = i8k_smm(&regs);
- if (rc < 0)
- return rc;
-
- return regs.eax == 1145651527 && regs.edx == 1145392204 ? 0 : -1;
-}
-
-static int
-i8k_ioctl_unlocked(struct file *fp, unsigned int cmd, unsigned long arg)
-{
- int val = 0;
- int speed;
- unsigned char buff[16];
- int __user *argp = (int __user *)arg;
-
- if (!argp)
- return -EINVAL;
-
- switch (cmd) {
- case I8K_BIOS_VERSION:
- val = (bios_version[0] << 16) |
- (bios_version[1] << 8) | bios_version[2];
- break;
-
- case I8K_MACHINE_ID:
- memset(buff, 0, 16);
- strlcpy(buff, i8k_get_dmi_data(DMI_PRODUCT_SERIAL),
- sizeof(buff));
- break;
-
- case I8K_FN_STATUS:
- val = i8k_get_fn_status();
- break;
-
- case I8K_POWER_STATUS:
- val = i8k_get_power_status();
- break;
-
- case I8K_GET_TEMP:
- val = i8k_get_temp(0);
- break;
-
- case I8K_GET_SPEED:
- if (copy_from_user(&val, argp, sizeof(int)))
- return -EFAULT;
-
- val = i8k_get_fan_speed(val);
- break;
-
- case I8K_GET_FAN:
- if (copy_from_user(&val, argp, sizeof(int)))
- return -EFAULT;
-
- val = i8k_get_fan_status(val);
- break;
-
- case I8K_SET_FAN:
- if (restricted && !capable(CAP_SYS_ADMIN))
- return -EPERM;
-
- if (copy_from_user(&val, argp, sizeof(int)))
- return -EFAULT;
-
- if (copy_from_user(&speed, argp + 1, sizeof(int)))
- return -EFAULT;
-
- val = i8k_set_fan(val, speed);
- break;
-
- default:
- return -EINVAL;
- }
-
- if (val < 0)
- return val;
-
- switch (cmd) {
- case I8K_BIOS_VERSION:
- if (copy_to_user(argp, &val, 4))
- return -EFAULT;
-
- break;
- case I8K_MACHINE_ID:
- if (copy_to_user(argp, buff, 16))
- return -EFAULT;
-
- break;
- default:
- if (copy_to_user(argp, &val, sizeof(int)))
- return -EFAULT;
-
- break;
- }
-
- return 0;
-}
-
-static long i8k_ioctl(struct file *fp, unsigned int cmd, unsigned long arg)
-{
- long ret;
-
- mutex_lock(&i8k_mutex);
- ret = i8k_ioctl_unlocked(fp, cmd, arg);
- mutex_unlock(&i8k_mutex);
-
- return ret;
-}
-
-/*
- * Print the information for /proc/i8k.
- */
-static int i8k_proc_show(struct seq_file *seq, void *offset)
-{
- int fn_key, cpu_temp, ac_power;
- int left_fan, right_fan, left_speed, right_speed;
-
- cpu_temp = i8k_get_temp(0); /* 11100 µs */
- left_fan = i8k_get_fan_status(I8K_FAN_LEFT); /* 580 µs */
- right_fan = i8k_get_fan_status(I8K_FAN_RIGHT); /* 580 µs */
- left_speed = i8k_get_fan_speed(I8K_FAN_LEFT); /* 580 µs */
- right_speed = i8k_get_fan_speed(I8K_FAN_RIGHT); /* 580 µs */
- fn_key = i8k_get_fn_status(); /* 750 µs */
- if (power_status)
- ac_power = i8k_get_power_status(); /* 14700 µs */
- else
- ac_power = -1;
-
- /*
- * Info:
- *
- * 1) Format version (this will change if format changes)
- * 2) BIOS version
- * 3) BIOS machine ID
- * 4) Cpu temperature
- * 5) Left fan status
- * 6) Right fan status
- * 7) Left fan speed
- * 8) Right fan speed
- * 9) AC power
- * 10) Fn Key status
- */
- seq_printf(seq, "%s %s %s %d %d %d %d %d %d %d\n",
- I8K_PROC_FMT,
- bios_version,
- i8k_get_dmi_data(DMI_PRODUCT_SERIAL),
- cpu_temp,
- left_fan, right_fan, left_speed, right_speed,
- ac_power, fn_key);
-
- return 0;
-}
-
-static int i8k_open_fs(struct inode *inode, struct file *file)
-{
- return single_open(file, i8k_proc_show, NULL);
-}
-
-
-/*
- * Hwmon interface
- */
-
-static ssize_t i8k_hwmon_show_temp_label(struct device *dev,
- struct device_attribute *devattr,
- char *buf)
-{
- static const char * const labels[] = {
- "CPU",
- "GPU",
- "SODIMM",
- "Other",
- "Ambient",
- "Other",
- };
- int index = to_sensor_dev_attr(devattr)->index;
- int type;
-
- type = i8k_get_temp_type(index);
- if (type < 0)
- return type;
- if (type >= ARRAY_SIZE(labels))
- type = ARRAY_SIZE(labels) - 1;
- return sprintf(buf, "%s\n", labels[type]);
-}
-
-static ssize_t i8k_hwmon_show_temp(struct device *dev,
- struct device_attribute *devattr,
- char *buf)
-{
- int index = to_sensor_dev_attr(devattr)->index;
- int temp;
-
- temp = i8k_get_temp(index);
- if (temp < 0)
- return temp;
- return sprintf(buf, "%d\n", temp * 1000);
-}
-
-static ssize_t i8k_hwmon_show_fan_label(struct device *dev,
- struct device_attribute *devattr,
- char *buf)
-{
- static const char * const labels[] = {
- "Processor Fan",
- "Motherboard Fan",
- "Video Fan",
- "Power Supply Fan",
- "Chipset Fan",
- "Other Fan",
- };
- int index = to_sensor_dev_attr(devattr)->index;
- bool dock = false;
- int type;
-
- type = i8k_get_fan_type(index);
- if (type < 0)
- return type;
-
- if (type & 0x10) {
- dock = true;
- type &= 0x0F;
- }
-
- if (type >= ARRAY_SIZE(labels))
- type = (ARRAY_SIZE(labels) - 1);
-
- return sprintf(buf, "%s%s\n", (dock ? "Docking " : ""), labels[type]);
-}
-
-static ssize_t i8k_hwmon_show_fan(struct device *dev,
- struct device_attribute *devattr,
- char *buf)
-{
- int index = to_sensor_dev_attr(devattr)->index;
- int fan_speed;
-
- fan_speed = i8k_get_fan_speed(index);
- if (fan_speed < 0)
- return fan_speed;
- return sprintf(buf, "%d\n", fan_speed);
-}
-
-static ssize_t i8k_hwmon_show_pwm(struct device *dev,
- struct device_attribute *devattr,
- char *buf)
-{
- int index = to_sensor_dev_attr(devattr)->index;
- int status;
-
- status = i8k_get_fan_status(index);
- if (status < 0)
- return -EIO;
- return sprintf(buf, "%d\n", clamp_val(status * i8k_pwm_mult, 0, 255));
-}
-
-static ssize_t i8k_hwmon_set_pwm(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- int index = to_sensor_dev_attr(attr)->index;
- unsigned long val;
- int err;
-
- err = kstrtoul(buf, 10, &val);
- if (err)
- return err;
- val = clamp_val(DIV_ROUND_CLOSEST(val, i8k_pwm_mult), 0, i8k_fan_max);
-
- mutex_lock(&i8k_mutex);
- err = i8k_set_fan(index, val);
- mutex_unlock(&i8k_mutex);
-
- return err < 0 ? -EIO : count;
-}
-
-static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, i8k_hwmon_show_temp, NULL, 0);
-static SENSOR_DEVICE_ATTR(temp1_label, S_IRUGO, i8k_hwmon_show_temp_label, NULL,
- 0);
-static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, i8k_hwmon_show_temp, NULL, 1);
-static SENSOR_DEVICE_ATTR(temp2_label, S_IRUGO, i8k_hwmon_show_temp_label, NULL,
- 1);
-static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO, i8k_hwmon_show_temp, NULL, 2);
-static SENSOR_DEVICE_ATTR(temp3_label, S_IRUGO, i8k_hwmon_show_temp_label, NULL,
- 2);
-static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO, i8k_hwmon_show_temp, NULL, 3);
-static SENSOR_DEVICE_ATTR(temp4_label, S_IRUGO, i8k_hwmon_show_temp_label, NULL,
- 3);
-static SENSOR_DEVICE_ATTR(fan1_input, S_IRUGO, i8k_hwmon_show_fan, NULL, 0);
-static SENSOR_DEVICE_ATTR(fan1_label, S_IRUGO, i8k_hwmon_show_fan_label, NULL,
- 0);
-static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, i8k_hwmon_show_pwm,
- i8k_hwmon_set_pwm, 0);
-static SENSOR_DEVICE_ATTR(fan2_input, S_IRUGO, i8k_hwmon_show_fan, NULL,
- 1);
-static SENSOR_DEVICE_ATTR(fan2_label, S_IRUGO, i8k_hwmon_show_fan_label, NULL,
- 1);
-static SENSOR_DEVICE_ATTR(pwm2, S_IRUGO | S_IWUSR, i8k_hwmon_show_pwm,
- i8k_hwmon_set_pwm, 1);
-
-static struct attribute *i8k_attrs[] = {
- &sensor_dev_attr_temp1_input.dev_attr.attr, /* 0 */
- &sensor_dev_attr_temp1_label.dev_attr.attr, /* 1 */
- &sensor_dev_attr_temp2_input.dev_attr.attr, /* 2 */
- &sensor_dev_attr_temp2_label.dev_attr.attr, /* 3 */
- &sensor_dev_attr_temp3_input.dev_attr.attr, /* 4 */
- &sensor_dev_attr_temp3_label.dev_attr.attr, /* 5 */
- &sensor_dev_attr_temp4_input.dev_attr.attr, /* 6 */
- &sensor_dev_attr_temp4_label.dev_attr.attr, /* 7 */
- &sensor_dev_attr_fan1_input.dev_attr.attr, /* 8 */
- &sensor_dev_attr_fan1_label.dev_attr.attr, /* 9 */
- &sensor_dev_attr_pwm1.dev_attr.attr, /* 10 */
- &sensor_dev_attr_fan2_input.dev_attr.attr, /* 11 */
- &sensor_dev_attr_fan2_label.dev_attr.attr, /* 12 */
- &sensor_dev_attr_pwm2.dev_attr.attr, /* 13 */
- NULL
-};
-
-static umode_t i8k_is_visible(struct kobject *kobj, struct attribute *attr,
- int index)
-{
- if (index >= 0 && index <= 1 &&
- !(i8k_hwmon_flags & I8K_HWMON_HAVE_TEMP1))
- return 0;
- if (index >= 2 && index <= 3 &&
- !(i8k_hwmon_flags & I8K_HWMON_HAVE_TEMP2))
- return 0;
- if (index >= 4 && index <= 5 &&
- !(i8k_hwmon_flags & I8K_HWMON_HAVE_TEMP3))
- return 0;
- if (index >= 6 && index <= 7 &&
- !(i8k_hwmon_flags & I8K_HWMON_HAVE_TEMP4))
- return 0;
- if (index >= 8 && index <= 10 &&
- !(i8k_hwmon_flags & I8K_HWMON_HAVE_FAN1))
- return 0;
- if (index >= 11 && index <= 13 &&
- !(i8k_hwmon_flags & I8K_HWMON_HAVE_FAN2))
- return 0;
-
- return attr->mode;
-}
-
-static const struct attribute_group i8k_group = {
- .attrs = i8k_attrs,
- .is_visible = i8k_is_visible,
-};
-__ATTRIBUTE_GROUPS(i8k);
-
-static int __init i8k_init_hwmon(void)
-{
- int err;
-
- i8k_hwmon_flags = 0;
-
- /* CPU temperature attributes, if temperature type is OK */
- err = i8k_get_temp_type(0);
- if (err >= 0)
- i8k_hwmon_flags |= I8K_HWMON_HAVE_TEMP1;
- /* check for additional temperature sensors */
- err = i8k_get_temp_type(1);
- if (err >= 0)
- i8k_hwmon_flags |= I8K_HWMON_HAVE_TEMP2;
- err = i8k_get_temp_type(2);
- if (err >= 0)
- i8k_hwmon_flags |= I8K_HWMON_HAVE_TEMP3;
- err = i8k_get_temp_type(3);
- if (err >= 0)
- i8k_hwmon_flags |= I8K_HWMON_HAVE_TEMP4;
-
- /* First fan attributes, if fan type is OK */
- err = i8k_get_fan_type(0);
- if (err >= 0)
- i8k_hwmon_flags |= I8K_HWMON_HAVE_FAN1;
-
- /* Second fan attributes, if fan type is OK */
- err = i8k_get_fan_type(1);
- if (err >= 0)
- i8k_hwmon_flags |= I8K_HWMON_HAVE_FAN2;
-
- i8k_hwmon_dev = hwmon_device_register_with_groups(NULL, "i8k", NULL,
- i8k_groups);
- if (IS_ERR(i8k_hwmon_dev)) {
- err = PTR_ERR(i8k_hwmon_dev);
- i8k_hwmon_dev = NULL;
- pr_err("hwmon registration failed (%d)\n", err);
- return err;
- }
- return 0;
-}
-
-struct i8k_config_data {
- uint fan_mult;
- uint fan_max;
-};
-
-enum i8k_configs {
- DELL_LATITUDE_D520,
- DELL_PRECISION_490,
- DELL_STUDIO,
- DELL_XPS,
-};
-
-static const struct i8k_config_data i8k_config_data[] = {
- [DELL_LATITUDE_D520] = {
- .fan_mult = 1,
- .fan_max = I8K_FAN_TURBO,
- },
- [DELL_PRECISION_490] = {
- .fan_mult = 1,
- .fan_max = I8K_FAN_TURBO,
- },
- [DELL_STUDIO] = {
- .fan_mult = 1,
- .fan_max = I8K_FAN_HIGH,
- },
- [DELL_XPS] = {
- .fan_mult = 1,
- .fan_max = I8K_FAN_HIGH,
- },
-};
-
-static struct dmi_system_id i8k_dmi_table[] __initdata = {
- {
- .ident = "Dell Inspiron",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Dell Computer"),
- DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron"),
- },
- },
- {
- .ident = "Dell Latitude",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Dell Computer"),
- DMI_MATCH(DMI_PRODUCT_NAME, "Latitude"),
- },
- },
- {
- .ident = "Dell Inspiron 2",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron"),
- },
- },
- {
- .ident = "Dell Latitude D520",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "Latitude D520"),
- },
- .driver_data = (void *)&i8k_config_data[DELL_LATITUDE_D520],
- },
- {
- .ident = "Dell Latitude 2",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "Latitude"),
- },
- },
- { /* UK Inspiron 6400 */
- .ident = "Dell Inspiron 3",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "MM061"),
- },
- },
- {
- .ident = "Dell Inspiron 3",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "MP061"),
- },
- },
- {
- .ident = "Dell Precision 490",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME,
- "Precision WorkStation 490"),
- },
- .driver_data = (void *)&i8k_config_data[DELL_PRECISION_490],
- },
- {
- .ident = "Dell Precision",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "Precision"),
- },
- },
- {
- .ident = "Dell Vostro",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "Vostro"),
- },
- },
- {
- .ident = "Dell XPS421",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "XPS L421X"),
- },
- },
- {
- .ident = "Dell Studio",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "Studio"),
- },
- .driver_data = (void *)&i8k_config_data[DELL_STUDIO],
- },
- {
- .ident = "Dell XPS 13",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "XPS13"),
- },
- .driver_data = (void *)&i8k_config_data[DELL_XPS],
- },
- {
- .ident = "Dell XPS M140",
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
- DMI_MATCH(DMI_PRODUCT_NAME, "MXC051"),
- },
- .driver_data = (void *)&i8k_config_data[DELL_XPS],
- },
- { }
-};
-
-MODULE_DEVICE_TABLE(dmi, i8k_dmi_table);
-
-static struct dmi_system_id i8k_blacklist_dmi_table[] __initdata = {
- {
- /*
- * CPU fan speed going up and down on Dell Studio XPS 8100
- * for unknown reasons.
- */
- .ident = "Dell Studio XPS 8100",
- .matches = {
- DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
- DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Studio XPS 8100"),
- },
- },
- { }
-};
-
-/*
- * Probe for the presence of a supported laptop.
- */
-static int __init i8k_probe(void)
-{
- const struct dmi_system_id *id;
- int fan, ret;
-
- /*
- * Get DMI information
- */
- if (!dmi_check_system(i8k_dmi_table) ||
- dmi_check_system(i8k_blacklist_dmi_table)) {
- if (!ignore_dmi && !force)
- return -ENODEV;
-
- pr_info("not running on a supported Dell system.\n");
- pr_info("vendor=%s, model=%s, version=%s\n",
- i8k_get_dmi_data(DMI_SYS_VENDOR),
- i8k_get_dmi_data(DMI_PRODUCT_NAME),
- i8k_get_dmi_data(DMI_BIOS_VERSION));
- }
-
- strlcpy(bios_version, i8k_get_dmi_data(DMI_BIOS_VERSION),
- sizeof(bios_version));
-
- /*
- * Get SMM Dell signature
- */
- if (i8k_get_dell_signature(I8K_SMM_GET_DELL_SIG1) &&
- i8k_get_dell_signature(I8K_SMM_GET_DELL_SIG2)) {
- pr_err("unable to get SMM Dell signature\n");
- if (!force)
- return -ENODEV;
- }
-
- /*
- * Set fan multiplier and maximal fan speed from dmi config
- * Values specified in module parameters override values from dmi
- */
- id = dmi_first_match(i8k_dmi_table);
- if (id && id->driver_data) {
- const struct i8k_config_data *conf = id->driver_data;
- if (!fan_mult && conf->fan_mult)
- fan_mult = conf->fan_mult;
- if (!fan_max && conf->fan_max)
- fan_max = conf->fan_max;
- }
-
- i8k_fan_max = fan_max ? : I8K_FAN_HIGH; /* Must not be 0 */
- i8k_pwm_mult = DIV_ROUND_UP(255, i8k_fan_max);
-
- if (!fan_mult) {
- /*
- * Autodetect fan multiplier based on nominal rpm
- * If fan reports rpm value too high then set multiplier to 1
- */
- for (fan = 0; fan < 2; ++fan) {
- ret = i8k_get_fan_nominal_speed(fan, i8k_fan_max);
- if (ret < 0)
- continue;
- if (ret > I8K_FAN_MAX_RPM)
- i8k_fan_mult = 1;
- break;
- }
- } else {
- /* Fan multiplier was specified in module param or in dmi */
- i8k_fan_mult = fan_mult;
- }
-
- return 0;
-}
-
-static int __init i8k_init(void)
-{
- struct proc_dir_entry *proc_i8k;
- int err;
-
- /* Are we running on an supported laptop? */
- if (i8k_probe())
- return -ENODEV;
-
- /* Register the proc entry */
- proc_i8k = proc_create("i8k", 0, NULL, &i8k_fops);
- if (!proc_i8k)
- return -ENOENT;
-
- err = i8k_init_hwmon();
- if (err)
- goto exit_remove_proc;
-
- return 0;
-
- exit_remove_proc:
- remove_proc_entry("i8k", NULL);
- return err;
-}
-
-static void __exit i8k_exit(void)
-{
- hwmon_device_unregister(i8k_hwmon_dev);
- remove_proc_entry("i8k", NULL);
-}
-
-module_init(i8k_init);
-module_exit(i8k_exit);