// SPDX-License-Identifier: GPL-2.0-or-later
/*-*-linux-c-*-*/
/*
Copyright ( C ) 2008 Cezary Jackiewicz < cezary . jackiewicz ( at ) gmail . com >
based on MSI driver
Copyright ( C ) 2006 Lennart Poettering < mzxreary ( at ) 0 pointer ( dot ) de >
*/
/*
* compal - laptop . c - Compal laptop support .
*
* This driver exports a few files in / sys / devices / platform / compal - laptop / :
* wake_up_XXX Whether or not we listen to such wake up events ( rw )
*
* In addition to these platform device attributes the driver
* registers itself in the Linux backlight control , power_supply , rfkill
* and hwmon subsystem and is available to userspace under :
*
* / sys / class / backlight / compal - laptop /
* / sys / class / power_supply / compal - laptop /
* / sys / class / rfkill / rfkillX /
* / sys / class / hwmon / hwmonX /
*
* Notes on the power_supply battery interface :
* - the " minimum " design voltage is * the * design voltage
* - the ambient temperature is the average battery temperature
* and the value is an educated guess ( see commented code below )
*
*
* This driver might work on other laptops produced by Compal . If you
* want to try it you can pass force = 1 as argument to the module which
* will force it to load even when the DMI data doesn ' t identify the
* laptop as compatible .
*
* Lots of data available at :
* http : //service1.marasst.com/Compal/JHL90_91/Service%20Manual/
* JHL90 % 20 service % 20 manual - Final - 0725 . pdf
*
*
*
* Support for the Compal JHL90 added by Roald Frederickx
* ( roald . frederickx @ gmail . com ) :
* Driver got large revision . Added functionalities : backlight
* power , wake_on_XXX , a hwmon and power_supply interface .
*
* In case this gets merged into the kernel source : I want to dedicate this
* to Kasper Meerts , the awesome guy who showed me Linux and C !
*/
/* NOTE: currently the wake_on_XXX, hwmon and power_supply interfaces are
* only enabled on a JHL90 board until it is verified that they work on the
* other boards too. See the extra_features variable. */
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/acpi.h>
#include <linux/dmi.h>
#include <linux/backlight.h>
#include <linux/platform_device.h>
#include <linux/rfkill.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
#include <linux/power_supply.h>
#include <linux/sysfs.h>
#include <acpi/video.h>
/* ======= */
/* Defines */
/* ======= */
#define DRIVER_NAME "compal-laptop"
#define DRIVER_VERSION "0.2.7"
#define BACKLIGHT_LEVEL_ADDR 0 xB9
#define BACKLIGHT_LEVEL_MAX 7
#define BACKLIGHT_STATE_ADDR 0 x59
#define BACKLIGHT_STATE_ON_DATA 0 xE1
#define BACKLIGHT_STATE_OFF_DATA 0 xE2
#define WAKE_UP_ADDR 0 xA4
#define WAKE_UP_PME (1 << 0 )
#define WAKE_UP_MODEM (1 << 1 )
#define WAKE_UP_LAN (1 << 2 )
#define WAKE_UP_WLAN (1 << 4 )
#define WAKE_UP_KEY (1 << 6 )
#define WAKE_UP_MOUSE (1 << 7 )
#define WIRELESS_ADDR 0 xBB
#define WIRELESS_WLAN (1 << 0 )
#define WIRELESS_BT (1 << 1 )
#define WIRELESS_WLAN_EXISTS (1 << 2 )
#define WIRELESS_BT_EXISTS (1 << 3 )
#define WIRELESS_KILLSWITCH (1 << 4 )
#define PWM_ADDRESS 0 x46
#define PWM_DISABLE_ADDR 0 x59
#define PWM_DISABLE_DATA 0 xA5
#define PWM_ENABLE_ADDR 0 x59
#define PWM_ENABLE_DATA 0 xA8
#define FAN_ADDRESS 0 x46
#define FAN_DATA 0 x81
#define FAN_FULL_ON_CMD 0 x59 /* Doesn't seem to work. Just */
#define FAN_FULL_ON_ENABLE 0 x76 /* force the pwm signal to its */
#define FAN_FULL_ON_DISABLE 0 x77 /* maximum value instead */
#define TEMP_CPU 0 xB0
#define TEMP_CPU_LOCAL 0 xB1
#define TEMP_CPU_DTS 0 xB5
#define TEMP_NORTHBRIDGE 0 xB6
#define TEMP_VGA 0 xB4
#define TEMP_SKIN 0 xB2
#define BAT_MANUFACTURER_NAME_ADDR 0 x10
#define BAT_MANUFACTURER_NAME_LEN 9
#define BAT_MODEL_NAME_ADDR 0 x19
#define BAT_MODEL_NAME_LEN 6
#define BAT_SERIAL_NUMBER_ADDR 0 xC4
#define BAT_SERIAL_NUMBER_LEN 5
#define BAT_CHARGE_NOW 0 xC2
#define BAT_CHARGE_DESIGN 0 xCA
#define BAT_VOLTAGE_NOW 0 xC6
#define BAT_VOLTAGE_DESIGN 0 xC8
#define BAT_CURRENT_NOW 0 xD0
#define BAT_CURRENT_AVG 0 xD2
#define BAT_POWER 0 xD4
#define BAT_CAPACITY 0 xCE
#define BAT_TEMP 0 xD6
#define BAT_TEMP_AVG 0 xD7
#define BAT_STATUS0 0 xC1
#define BAT_STATUS1 0 xF0
#define BAT_STATUS2 0 xF1
#define BAT_STOP_CHARGE1 0 xF2
#define BAT_STOP_CHARGE2 0 xF3
#define BAT_CHARGE_LIMIT 0 x03
#define BAT_CHARGE_LIMIT_MAX 100
#define BAT_S0_DISCHARGE (1 << 0 )
#define BAT_S0_DISCHRG_CRITICAL (1 << 2 )
#define BAT_S0_LOW (1 << 3 )
#define BAT_S0_CHARGING (1 << 1 )
#define BAT_S0_AC (1 << 7 )
#define BAT_S1_EXISTS (1 << 0 )
#define BAT_S1_FULL (1 << 1 )
#define BAT_S1_EMPTY (1 << 2 )
#define BAT_S1_LiION_OR_NiMH (1 << 7 )
#define BAT_S2_LOW_LOW (1 << 0 )
#define BAT_STOP_CHRG1_BAD_CELL (1 << 1 )
#define BAT_STOP_CHRG1_COMM_FAIL (1 << 2 )
#define BAT_STOP_CHRG1_OVERVOLTAGE (1 << 6 )
#define BAT_STOP_CHRG1_OVERTEMPERATURE (1 << 7 )
/* ======= */
/* Structs */
/* ======= */
struct compal_data{
/* Fan control */
int pwm_enable; /* 0:full on, 1:set by pwm1, 2:control by motherboard */
unsigned char curr_pwm;
/* Power supply */
struct power_supply *psy;
struct power_supply_info psy_info;
char bat_model_name[BAT_MODEL_NAME_LEN + 1 ];
char bat_manufacturer_name[BAT_MANUFACTURER_NAME_LEN + 1 ];
char bat_serial_number[BAT_SERIAL_NUMBER_LEN + 1 ];
};
/* =============== */
/* General globals */
/* =============== */
static bool force;
module_param(force, bool , 0 );
MODULE_PARM_DESC(force, "Force driver load, ignore DMI data" );
/* Support for the wake_on_XXX, hwmon and power_supply interface. Currently
* only gets enabled on a JHL90 board. Might work with the others too */
static bool extra_features;
/* Nasty stuff. For some reason the fan control is very un-linear. I've
* come up with these values by looping through the possible inputs and
* watching the output of address 0 x4F ( do an ec_transaction writing 0 x33
* into 0 x4F and read a few bytes from the output , like so :
* u8 writeData = 0 x33 ;
* ec_transaction ( 0 x4F , & writeData , 1 , buffer , 32 ) ;
* That address is labeled " fan1 table information " in the service manual .
* It should be clear which value in ' buffer ' changes ) . This seems to be
* related to fan speed . It isn ' t a proper ' realtime ' fan speed value
* though , because physically stopping or speeding up the fan doesn ' t
* change it . It might be the average voltage or current of the pwm output .
* Nevertheless, it is more fine-grained than the actual RPM reading */
static const unsigned char pwm_lookup_table[256 ] = {
0 , 0 , 0 , 1 , 1 , 1 , 2 , 253 , 254 , 3 , 3 , 3 , 4 , 4 , 4 , 5 , 5 , 5 , 6 , 6 , 6 ,
7 , 7 , 7 , 8 , 86 , 86 , 9 , 9 , 9 , 10 , 10 , 10 , 11 , 92 , 92 , 12 , 12 , 95 ,
13 , 66 , 66 , 14 , 14 , 98 , 15 , 15 , 15 , 16 , 16 , 67 , 17 , 17 , 72 , 18 , 70 ,
75 , 19 , 90 , 90 , 73 , 73 , 73 , 21 , 21 , 91 , 91 , 91 , 96 , 23 , 94 , 94 , 94 ,
94 , 94 , 94 , 94 , 94 , 94 , 94 , 141 , 141 , 238 , 223 , 192 , 139 , 139 , 139 ,
139 , 139 , 142 , 142 , 142 , 142 , 142 , 78 , 78 , 78 , 78 , 78 , 76 , 76 , 76 ,
76 , 76 , 79 , 79 , 79 , 79 , 79 , 79 , 79 , 20 , 20 , 20 , 20 , 20 , 22 , 22 , 22 ,
22 , 22 , 24 , 24 , 24 , 24 , 24 , 24 , 219 , 219 , 219 , 219 , 219 , 219 , 219 ,
219 , 27 , 27 , 188 , 188 , 28 , 28 , 28 , 29 , 186 , 186 , 186 , 186 , 186 ,
186 , 186 , 186 , 186 , 186 , 31 , 31 , 31 , 31 , 31 , 32 , 32 , 32 , 41 , 33 ,
33 , 33 , 33 , 33 , 252 , 252 , 34 , 34 , 34 , 43 , 35 , 35 , 35 , 36 , 36 , 38 ,
206 , 206 , 206 , 206 , 206 , 206 , 206 , 206 , 206 , 37 , 37 , 37 , 46 , 46 ,
47 , 47 , 232 , 232 , 232 , 232 , 232 , 232 , 232 , 232 , 232 , 232 , 48 , 48 ,
48 , 48 , 48 , 40 , 40 , 40 , 49 , 42 , 42 , 42 , 42 , 42 , 42 , 42 , 42 , 44 ,
189 , 189 , 189 , 189 , 54 , 54 , 45 , 45 , 45 , 45 , 45 , 45 , 45 , 45 , 251 ,
191 , 199 , 199 , 199 , 199 , 199 , 215 , 215 , 215 , 215 , 187 , 187 , 187 ,
187 , 187 , 193 , 50
};
/* ========================= */
/* Hardware access functions */
/* ========================= */
/* General access */
static u8 ec_read_u8(u8 addr)
{
u8 value = 0 ;
ec_read(addr, &value);
return value;
}
static s8 ec_read_s8(u8 addr)
{
return (s8)ec_read_u8(addr);
}
static u16 ec_read_u16(u8 addr)
{
int hi, lo;
lo = ec_read_u8(addr);
hi = ec_read_u8(addr + 1 );
return (hi << 8 ) + lo;
}
static s16 ec_read_s16(u8 addr)
{
return (s16) ec_read_u16(addr);
}
static void ec_read_sequence(u8 addr, u8 *buf, int len)
{
int i;
for (i = 0 ; i < len; i++)
ec_read(addr + i, buf + i);
}
/* Backlight access */
static int set_backlight_level(int level)
{
if (level < 0 || level > BACKLIGHT_LEVEL_MAX)
return -EINVAL;
ec_write(BACKLIGHT_LEVEL_ADDR, level);
return 0 ;
}
static int get_backlight_level(void )
{
return (int ) ec_read_u8(BACKLIGHT_LEVEL_ADDR);
}
static void set_backlight_state(bool on)
{
u8 data = on ? BACKLIGHT_STATE_ON_DATA : BACKLIGHT_STATE_OFF_DATA;
ec_transaction(BACKLIGHT_STATE_ADDR, &data, 1 , NULL, 0 );
}
/* Fan control access */
static void pwm_enable_control(void )
{
unsigned char writeData = PWM_ENABLE_DATA;
ec_transaction(PWM_ENABLE_ADDR, &writeData, 1 , NULL, 0 );
}
static void pwm_disable_control(void )
{
unsigned char writeData = PWM_DISABLE_DATA;
ec_transaction(PWM_DISABLE_ADDR, &writeData, 1 , NULL, 0 );
}
static void set_pwm(int pwm)
{
ec_transaction(PWM_ADDRESS, &pwm_lookup_table[pwm], 1 , NULL, 0 );
}
static int get_fan_rpm(void )
{
u8 value, data = FAN_DATA;
ec_transaction(FAN_ADDRESS, &data, 1 , &value, 1 );
return 100 * (int )value;
}
/* =================== */
/* Interface functions */
/* =================== */
/* Backlight interface */
static int bl_get_brightness(struct backlight_device *b)
{
return get_backlight_level();
}
static int bl_update_status(struct backlight_device *b)
{
int ret = set_backlight_level(b->props.brightness);
if (ret)
return ret;
set_backlight_state(!backlight_is_blank(b));
return 0 ;
}
static const struct backlight_ops compalbl_ops = {
.get_brightness = bl_get_brightness,
.update_status = bl_update_status,
};
/* Wireless interface */
static int compal_rfkill_set(void *data, bool blocked)
{
unsigned long radio = (unsigned long ) data;
u8 result = ec_read_u8(WIRELESS_ADDR);
u8 value;
if (!blocked)
value = (u8) (result | radio);
else
value = (u8) (result & ~radio);
ec_write(WIRELESS_ADDR, value);
return 0 ;
}
static void compal_rfkill_poll(struct rfkill *rfkill, void *data)
{
u8 result = ec_read_u8(WIRELESS_ADDR);
bool hw_blocked = !(result & WIRELESS_KILLSWITCH);
rfkill_set_hw_state(rfkill, hw_blocked);
}
static const struct rfkill_ops compal_rfkill_ops = {
.poll = compal_rfkill_poll,
.set_block = compal_rfkill_set,
};
/* Wake_up interface */
#define SIMPLE_MASKED_STORE_SHOW(NAME, ADDR, MASK) \
static ssize_t NAME## _show(struct device *dev, \
struct device_attribute *attr, char *buf) \
{ \
return sysfs_emit(buf, "%d\n" , ((ec_read_u8(ADDR) & MASK) != 0 )); \
} \
static ssize_t NAME## _store(struct device *dev, \
struct device_attribute *attr, const char *buf, size_t count) \
{ \
int state; \
u8 old_val = ec_read_u8(ADDR); \
if (sscanf(buf, "%d" , &state) != 1 || (state < 0 || state > 1 )) \
return -EINVAL; \
ec_write(ADDR, state ? (old_val | MASK) : (old_val & ~MASK)); \
return count; \
}
SIMPLE_MASKED_STORE_SHOW(wake_up_pme, WAKE_UP_ADDR, WAKE_UP_PME)
SIMPLE_MASKED_STORE_SHOW(wake_up_modem, WAKE_UP_ADDR, WAKE_UP_MODEM)
SIMPLE_MASKED_STORE_SHOW(wake_up_lan, WAKE_UP_ADDR, WAKE_UP_LAN)
SIMPLE_MASKED_STORE_SHOW(wake_up_wlan, WAKE_UP_ADDR, WAKE_UP_WLAN)
SIMPLE_MASKED_STORE_SHOW(wake_up_key, WAKE_UP_ADDR, WAKE_UP_KEY)
SIMPLE_MASKED_STORE_SHOW(wake_up_mouse, WAKE_UP_ADDR, WAKE_UP_MOUSE)
/* Fan control interface */
static ssize_t pwm_enable_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct compal_data *data = dev_get_drvdata(dev);
return sysfs_emit(buf, "%d\n" , data->pwm_enable);
}
static ssize_t pwm_enable_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct compal_data *data = dev_get_drvdata(dev);
long val;
int err;
err = kstrtol(buf, 10 , &val);
if (err)
return err;
if (val < 0 )
return -EINVAL;
data->pwm_enable = val;
switch (val) {
case 0 : /* Full speed */
pwm_enable_control();
set_pwm(255 );
break ;
case 1 : /* As set by pwm1 */
pwm_enable_control();
set_pwm(data->curr_pwm);
break ;
default : /* Control by motherboard */
pwm_disable_control();
break ;
}
return count;
}
static ssize_t pwm_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct compal_data *data = dev_get_drvdata(dev);
return sysfs_emit(buf, "%hhu\n" , data->curr_pwm);
}
static ssize_t pwm_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct compal_data *data = dev_get_drvdata(dev);
long val;
int err;
err = kstrtol(buf, 10 , &val);
if (err)
return err;
if (val < 0 || val > 255 )
return -EINVAL;
data->curr_pwm = val;
if (data->pwm_enable != 1 )
return count;
set_pwm(val);
return count;
}
static ssize_t fan_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
return sysfs_emit(buf, "%d\n" , get_fan_rpm());
}
/* Temperature interface */
#define TEMPERATURE_SHOW_TEMP_AND_LABEL(POSTFIX, ADDRESS, LABEL) \
static ssize_t temp_## POSTFIX(struct device *dev, \
struct device_attribute *attr, char *buf) \
{ \
return sysfs_emit(buf, "%d\n" , 1000 * (int )ec_read_s8(ADDRESS)); \
} \
static ssize_t label_## POSTFIX(struct device *dev, \
struct device_attribute *attr, char *buf) \
{ \
return sysfs_emit(buf, "%s\n" , LABEL); \
}
/* Labels as in service guide */
TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu, TEMP_CPU, "CPU_TEMP" );
TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_local, TEMP_CPU_LOCAL, "CPU_TEMP_LOCAL" );
TEMPERATURE_SHOW_TEMP_AND_LABEL(cpu_DTS, TEMP_CPU_DTS, "CPU_DTS" );
TEMPERATURE_SHOW_TEMP_AND_LABEL(northbridge,TEMP_NORTHBRIDGE,"NorthBridge" );
TEMPERATURE_SHOW_TEMP_AND_LABEL(vga, TEMP_VGA, "VGA_TEMP" );
TEMPERATURE_SHOW_TEMP_AND_LABEL(SKIN, TEMP_SKIN, "SKIN_TEMP90" );
/* Power supply interface */
static int bat_status(void )
{
u8 status0 = ec_read_u8(BAT_STATUS0);
u8 status1 = ec_read_u8(BAT_STATUS1);
if (status0 & BAT_S0_CHARGING)
return POWER_SUPPLY_STATUS_CHARGING;
if (status0 & BAT_S0_DISCHARGE)
return POWER_SUPPLY_STATUS_DISCHARGING;
if (status1 & BAT_S1_FULL)
return POWER_SUPPLY_STATUS_FULL;
return POWER_SUPPLY_STATUS_NOT_CHARGING;
}
static int bat_health(void )
{
u8 status = ec_read_u8(BAT_STOP_CHARGE1);
if (status & BAT_STOP_CHRG1_OVERTEMPERATURE)
return POWER_SUPPLY_HEALTH_OVERHEAT;
if (status & BAT_STOP_CHRG1_OVERVOLTAGE)
return POWER_SUPPLY_HEALTH_OVERVOLTAGE;
if (status & BAT_STOP_CHRG1_BAD_CELL)
return POWER_SUPPLY_HEALTH_DEAD;
if (status & BAT_STOP_CHRG1_COMM_FAIL)
return POWER_SUPPLY_HEALTH_UNKNOWN;
return POWER_SUPPLY_HEALTH_GOOD;
}
static int bat_is_present(void )
{
u8 status = ec_read_u8(BAT_STATUS2);
return ((status & BAT_S1_EXISTS) != 0 );
}
static int bat_technology(void )
{
u8 status = ec_read_u8(BAT_STATUS1);
if (status & BAT_S1_LiION_OR_NiMH)
return POWER_SUPPLY_TECHNOLOGY_LION;
return POWER_SUPPLY_TECHNOLOGY_NiMH;
}
static int bat_capacity_level(void )
{
u8 status0 = ec_read_u8(BAT_STATUS0);
u8 status1 = ec_read_u8(BAT_STATUS1);
u8 status2 = ec_read_u8(BAT_STATUS2);
if (status0 & BAT_S0_DISCHRG_CRITICAL
|| status1 & BAT_S1_EMPTY
|| status2 & BAT_S2_LOW_LOW)
return POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL;
if (status0 & BAT_S0_LOW)
return POWER_SUPPLY_CAPACITY_LEVEL_LOW;
if (status1 & BAT_S1_FULL)
return POWER_SUPPLY_CAPACITY_LEVEL_FULL;
return POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
}
static int bat_get_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
struct compal_data *data = power_supply_get_drvdata(psy);
switch (psp) {
case POWER_SUPPLY_PROP_STATUS:
val->intval = bat_status();
break ;
case POWER_SUPPLY_PROP_HEALTH:
val->intval = bat_health();
break ;
case POWER_SUPPLY_PROP_PRESENT:
val->intval = bat_is_present();
break ;
case POWER_SUPPLY_PROP_TECHNOLOGY:
val->intval = bat_technology();
break ;
case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN: /* THE design voltage... */
val->intval = ec_read_u16(BAT_VOLTAGE_DESIGN) * 1000 ;
break ;
case POWER_SUPPLY_PROP_VOLTAGE_NOW:
val->intval = ec_read_u16(BAT_VOLTAGE_NOW) * 1000 ;
break ;
case POWER_SUPPLY_PROP_CURRENT_NOW:
val->intval = ec_read_s16(BAT_CURRENT_NOW) * 1000 ;
break ;
case POWER_SUPPLY_PROP_CURRENT_AVG:
val->intval = ec_read_s16(BAT_CURRENT_AVG) * 1000 ;
break ;
case POWER_SUPPLY_PROP_POWER_NOW:
val->intval = ec_read_u8(BAT_POWER) * 1000000 ;
break ;
case POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN:
val->intval = ec_read_u16(BAT_CHARGE_DESIGN) * 1000 ;
break ;
case POWER_SUPPLY_PROP_CHARGE_NOW:
val->intval = ec_read_u16(BAT_CHARGE_NOW) * 1000 ;
break ;
case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT:
val->intval = ec_read_u8(BAT_CHARGE_LIMIT);
break ;
case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX:
val->intval = BAT_CHARGE_LIMIT_MAX;
break ;
case POWER_SUPPLY_PROP_CAPACITY:
val->intval = ec_read_u8(BAT_CAPACITY);
break ;
case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
val->intval = bat_capacity_level();
break ;
/* It smees that BAT_TEMP_AVG is a (2's complement?) value showing
* the number of degrees , whereas BAT_TEMP is somewhat more
* complicated . It looks like this is a negative nember with a
* 100 / 256 divider and an offset of 222 . Both were determined
* experimentally by comparing BAT_TEMP and BAT_TEMP_AVG. */
case POWER_SUPPLY_PROP_TEMP:
val->intval = ((222 - (int )ec_read_u8(BAT_TEMP)) * 1000 ) >> 8 ;
break ;
case POWER_SUPPLY_PROP_TEMP_AMBIENT: /* Ambient, Avg, ... same thing */
val->intval = ec_read_s8(BAT_TEMP_AVG) * 10 ;
break ;
/* Neither the model name nor manufacturer name work for me. */
case POWER_SUPPLY_PROP_MODEL_NAME:
val->strval = data->bat_model_name;
break ;
case POWER_SUPPLY_PROP_MANUFACTURER:
val->strval = data->bat_manufacturer_name;
break ;
case POWER_SUPPLY_PROP_SERIAL_NUMBER:
val->strval = data->bat_serial_number;
break ;
default :
break ;
}
return 0 ;
}
static int bat_set_property(struct power_supply *psy,
enum power_supply_property psp,
const union power_supply_propval *val)
{
int level;
switch (psp) {
case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT:
level = val->intval;
if (level < 0 || level > BAT_CHARGE_LIMIT_MAX)
return -EINVAL;
if (ec_write(BAT_CHARGE_LIMIT, level) < 0 )
return -EIO;
break ;
default :
break ;
}
return 0 ;
}
static int bat_writeable_property(struct power_supply *psy,
enum power_supply_property psp)
{
switch (psp) {
case POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT:
return 1 ;
default :
return 0 ;
}
}
/* ============== */
/* Driver Globals */
/* ============== */
static DEVICE_ATTR_RW(wake_up_pme);
static DEVICE_ATTR_RW(wake_up_modem);
static DEVICE_ATTR_RW(wake_up_lan);
static DEVICE_ATTR_RW(wake_up_wlan);
static DEVICE_ATTR_RW(wake_up_key);
static DEVICE_ATTR_RW(wake_up_mouse);
static DEVICE_ATTR(fan1_input, S_IRUGO, fan_show, NULL);
static DEVICE_ATTR(temp1_input, S_IRUGO, temp_cpu, NULL);
static DEVICE_ATTR(temp2_input, S_IRUGO, temp_cpu_local, NULL);
static DEVICE_ATTR(temp3_input, S_IRUGO, temp_cpu_DTS, NULL);
static DEVICE_ATTR(temp4_input, S_IRUGO, temp_northbridge, NULL);
static DEVICE_ATTR(temp5_input, S_IRUGO, temp_vga, NULL);
static DEVICE_ATTR(temp6_input, S_IRUGO, temp_SKIN, NULL);
static DEVICE_ATTR(temp1_label, S_IRUGO, label_cpu, NULL);
static DEVICE_ATTR(temp2_label, S_IRUGO, label_cpu_local, NULL);
static DEVICE_ATTR(temp3_label, S_IRUGO, label_cpu_DTS, NULL);
static DEVICE_ATTR(temp4_label, S_IRUGO, label_northbridge, NULL);
static DEVICE_ATTR(temp5_label, S_IRUGO, label_vga, NULL);
static DEVICE_ATTR(temp6_label, S_IRUGO, label_SKIN, NULL);
static DEVICE_ATTR(pwm1, S_IRUGO | S_IWUSR, pwm_show, pwm_store);
static DEVICE_ATTR(pwm1_enable,
S_IRUGO | S_IWUSR, pwm_enable_show, pwm_enable_store);
static struct attribute *compal_platform_attrs[] = {
&dev_attr_wake_up_pme.attr,
&dev_attr_wake_up_modem.attr,
&dev_attr_wake_up_lan.attr,
&dev_attr_wake_up_wlan.attr,
&dev_attr_wake_up_key.attr,
&dev_attr_wake_up_mouse.attr,
NULL
};
static const struct attribute_group compal_platform_attr_group = {
.attrs = compal_platform_attrs
};
static struct attribute *compal_hwmon_attrs[] = {
&dev_attr_pwm1_enable.attr,
&dev_attr_pwm1.attr,
&dev_attr_fan1_input.attr,
&dev_attr_temp1_input.attr,
&dev_attr_temp2_input.attr,
&dev_attr_temp3_input.attr,
&dev_attr_temp4_input.attr,
&dev_attr_temp5_input.attr,
&dev_attr_temp6_input.attr,
&dev_attr_temp1_label.attr,
&dev_attr_temp2_label.attr,
&dev_attr_temp3_label.attr,
&dev_attr_temp4_label.attr,
&dev_attr_temp5_label.attr,
&dev_attr_temp6_label.attr,
NULL
};
ATTRIBUTE_GROUPS(compal_hwmon);
static enum power_supply_property compal_bat_properties[] = {
POWER_SUPPLY_PROP_STATUS,
POWER_SUPPLY_PROP_HEALTH,
POWER_SUPPLY_PROP_PRESENT,
POWER_SUPPLY_PROP_TECHNOLOGY,
POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
POWER_SUPPLY_PROP_VOLTAGE_NOW,
POWER_SUPPLY_PROP_CURRENT_NOW,
POWER_SUPPLY_PROP_CURRENT_AVG,
POWER_SUPPLY_PROP_POWER_NOW,
POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
POWER_SUPPLY_PROP_CHARGE_NOW,
POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT,
POWER_SUPPLY_PROP_CHARGE_CONTROL_LIMIT_MAX,
POWER_SUPPLY_PROP_CAPACITY,
POWER_SUPPLY_PROP_CAPACITY_LEVEL,
POWER_SUPPLY_PROP_TEMP,
POWER_SUPPLY_PROP_TEMP_AMBIENT,
POWER_SUPPLY_PROP_MODEL_NAME,
POWER_SUPPLY_PROP_MANUFACTURER,
POWER_SUPPLY_PROP_SERIAL_NUMBER,
};
static struct backlight_device *compalbl_device;
static struct platform_device *compal_device;
static struct rfkill *wifi_rfkill;
static struct rfkill *bt_rfkill;
/* =================================== */
/* Initialization & clean-up functions */
/* =================================== */
static int dmi_check_cb(const struct dmi_system_id *id)
{
pr_info("Identified laptop model '%s'\n" , id->ident);
extra_features = false ;
return 1 ;
}
static int dmi_check_cb_extra(const struct dmi_system_id *id)
{
pr_info("Identified laptop model '%s', enabling extra features\n" ,
id->ident);
extra_features = true ;
return 1 ;
}
static const struct dmi_system_id compal_dmi_table[] __initconst = {
{
.ident = "FL90/IFL90" ,
.matches = {
DMI_MATCH(DMI_BOARD_NAME, "IFL90" ),
DMI_MATCH(DMI_BOARD_VERSION, "IFT00" ),
},
.callback = dmi_check_cb
},
{
.ident = "FL90/IFL90" ,
.matches = {
DMI_MATCH(DMI_BOARD_NAME, "IFL90" ),
DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE" ),
},
.callback = dmi_check_cb
},
{
.ident = "FL91/IFL91" ,
.matches = {
DMI_MATCH(DMI_BOARD_NAME, "IFL91" ),
DMI_MATCH(DMI_BOARD_VERSION, "IFT00" ),
},
.callback = dmi_check_cb
},
{
.ident = "FL92/JFL92" ,
.matches = {
DMI_MATCH(DMI_BOARD_NAME, "JFL92" ),
DMI_MATCH(DMI_BOARD_VERSION, "IFT00" ),
},
.callback = dmi_check_cb
},
{
.ident = "FT00/IFT00" ,
.matches = {
DMI_MATCH(DMI_BOARD_NAME, "IFT00" ),
DMI_MATCH(DMI_BOARD_VERSION, "IFT00" ),
},
.callback = dmi_check_cb
},
{
.ident = "Dell Mini 9" ,
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc." ),
DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 910" ),
},
.callback = dmi_check_cb
},
{
.ident = "Dell Mini 10" ,
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc." ),
DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1010" ),
},
.callback = dmi_check_cb
},
{
.ident = "Dell Mini 10v" ,
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc." ),
DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1011" ),
},
.callback = dmi_check_cb
},
{
.ident = "Dell Mini 1012" ,
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc." ),
DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1012" ),
},
.callback = dmi_check_cb
},
{
.ident = "Dell Inspiron 11z" ,
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc." ),
DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1110" ),
},
.callback = dmi_check_cb
},
{
.ident = "Dell Mini 12" ,
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc." ),
DMI_MATCH(DMI_PRODUCT_NAME, "Inspiron 1210" ),
},
.callback = dmi_check_cb
},
{
.ident = "JHL90" ,
.matches = {
DMI_MATCH(DMI_BOARD_NAME, "JHL90" ),
DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE" ),
},
.callback = dmi_check_cb_extra
},
{
.ident = "KHLB2" ,
.matches = {
DMI_MATCH(DMI_BOARD_NAME, "KHLB2" ),
DMI_MATCH(DMI_BOARD_VERSION, "REFERENCE" ),
},
.callback = dmi_check_cb_extra
},
{ }
};
MODULE_DEVICE_TABLE(dmi, compal_dmi_table);
static const struct power_supply_desc psy_bat_desc = {
.name = DRIVER_NAME,
.type = POWER_SUPPLY_TYPE_BATTERY,
.properties = compal_bat_properties,
.num_properties = ARRAY_SIZE(compal_bat_properties),
.get_property = bat_get_property,
.set_property = bat_set_property,
.property_is_writeable = bat_writeable_property,
};
static void initialize_power_supply_data(struct compal_data *data)
{
ec_read_sequence(BAT_MANUFACTURER_NAME_ADDR,
data->bat_manufacturer_name,
BAT_MANUFACTURER_NAME_LEN);
data->bat_manufacturer_name[BAT_MANUFACTURER_NAME_LEN] = 0 ;
ec_read_sequence(BAT_MODEL_NAME_ADDR,
data->bat_model_name,
BAT_MODEL_NAME_LEN);
data->bat_model_name[BAT_MODEL_NAME_LEN] = 0 ;
scnprintf(data->bat_serial_number, BAT_SERIAL_NUMBER_LEN + 1 , "%d" ,
ec_read_u16(BAT_SERIAL_NUMBER_ADDR));
}
static void initialize_fan_control_data(struct compal_data *data)
{
data->pwm_enable = 2 ; /* Keep motherboard in control for now */
data->curr_pwm = 255 ; /* Try not to cause a CPU_on_fire exception
if we take over... */
}
static int setup_rfkill(void )
{
int ret;
wifi_rfkill = rfkill_alloc("compal-wifi" , &compal_device->dev,
RFKILL_TYPE_WLAN, &compal_rfkill_ops,
(void *) WIRELESS_WLAN);
if (!wifi_rfkill)
return -ENOMEM;
ret = rfkill_register(wifi_rfkill);
if (ret)
goto err_wifi;
bt_rfkill = rfkill_alloc("compal-bluetooth" , &compal_device->dev,
RFKILL_TYPE_BLUETOOTH, &compal_rfkill_ops,
(void *) WIRELESS_BT);
if (!bt_rfkill) {
ret = -ENOMEM;
goto err_allocate_bt;
}
ret = rfkill_register(bt_rfkill);
if (ret)
goto err_register_bt;
return 0 ;
err_register_bt:
rfkill_destroy(bt_rfkill);
err_allocate_bt:
rfkill_unregister(wifi_rfkill);
err_wifi:
rfkill_destroy(wifi_rfkill);
return ret;
}
static int compal_probe(struct platform_device *pdev)
{
int err;
struct compal_data *data;
struct device *hwmon_dev;
struct power_supply_config psy_cfg = {};
if (!extra_features)
return 0 ;
/* Fan control */
data = devm_kzalloc(&pdev->dev, sizeof (struct compal_data), GFP_KERNEL);
if (!data)
return -ENOMEM;
initialize_fan_control_data(data);
err = sysfs_create_group(&pdev->dev.kobj, &compal_platform_attr_group);
if (err)
return err;
hwmon_dev = devm_hwmon_device_register_with_groups(&pdev->dev,
"compal" , data,
compal_hwmon_groups);
if (IS_ERR(hwmon_dev)) {
err = PTR_ERR(hwmon_dev);
goto remove;
}
/* Power supply */
initialize_power_supply_data(data);
psy_cfg.drv_data = data;
data->psy = power_supply_register(&compal_device->dev, &psy_bat_desc,
&psy_cfg);
if (IS_ERR(data->psy)) {
err = PTR_ERR(data->psy);
goto remove;
}
platform_set_drvdata(pdev, data);
return 0 ;
remove:
sysfs_remove_group(&pdev->dev.kobj, &compal_platform_attr_group);
return err;
}
static void compal_remove(struct platform_device *pdev)
{
struct compal_data *data;
if (!extra_features)
return ;
pr_info("Unloading: resetting fan control to motherboard\n" );
pwm_disable_control();
data = platform_get_drvdata(pdev);
power_supply_unregister(data->psy);
sysfs_remove_group(&pdev->dev.kobj, &compal_platform_attr_group);
}
static struct platform_driver compal_driver = {
.driver = {
.name = DRIVER_NAME,
},
.probe = compal_probe,
.remove = compal_remove,
};
static int __init compal_init(void )
{
int ret;
if (acpi_disabled) {
pr_err("ACPI needs to be enabled for this driver to work!\n" );
return -ENODEV;
}
if (!force && !dmi_check_system(compal_dmi_table)) {
pr_err("Motherboard not recognized (You could try the module's force-parameter)\n" );
return -ENODEV;
}
if (acpi_video_get_backlight_type() == acpi_backlight_vendor) {
struct backlight_properties props;
memset(&props, 0 , sizeof (struct backlight_properties));
props.type = BACKLIGHT_PLATFORM;
props.max_brightness = BACKLIGHT_LEVEL_MAX;
compalbl_device = backlight_device_register(DRIVER_NAME,
NULL, NULL,
&compalbl_ops,
&props);
if (IS_ERR(compalbl_device))
return PTR_ERR(compalbl_device);
}
ret = platform_driver_register(&compal_driver);
if (ret)
goto err_backlight;
compal_device = platform_device_alloc(DRIVER_NAME, PLATFORM_DEVID_NONE);
if (!compal_device) {
ret = -ENOMEM;
goto err_platform_driver;
}
ret = platform_device_add(compal_device); /* This calls compal_probe */
if (ret)
goto err_platform_device;
ret = setup_rfkill();
if (ret)
goto err_rfkill;
pr_info("Driver " DRIVER_VERSION " successfully loaded\n" );
return 0 ;
err_rfkill:
platform_device_del(compal_device);
err_platform_device:
platform_device_put(compal_device);
err_platform_driver:
platform_driver_unregister(&compal_driver);
err_backlight:
backlight_device_unregister(compalbl_device);
return ret;
}
static void __exit compal_cleanup(void )
{
platform_device_unregister(compal_device);
platform_driver_unregister(&compal_driver);
backlight_device_unregister(compalbl_device);
rfkill_unregister(wifi_rfkill);
rfkill_unregister(bt_rfkill);
rfkill_destroy(wifi_rfkill);
rfkill_destroy(bt_rfkill);
pr_info("Driver unloaded\n" );
}
module_init(compal_init);
module_exit(compal_cleanup);
MODULE_AUTHOR("Cezary Jackiewicz" );
MODULE_AUTHOR("Roald Frederickx <roald.frederickx@gmail.com>" );
MODULE_DESCRIPTION("Compal Laptop Support" );
MODULE_VERSION(DRIVER_VERSION);
MODULE_LICENSE("GPL" );
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(vorverarbeitet am 2026-09-28)
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