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linux/drivers/platform/x86/compal-laptop.c
Roald Frederickx d9a427ec81 compal-laptop: Add charge control limit 
Add charge control limit to the power supply subsystem of the Compal
platform driver.

This apparently was present in the original driver by Cezary Jackiewicz
at http://eko.one.pl/index.php?page=compal-laptop but it seems to have been
overlooked.

The Kconfig description is updated to reflect this addition. It now also
mentions the hwmon interface that was already present.

Signed-off-by: Roald Frederickx <roald.frederickx@gmail.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
2015-10-03 08:44:57 -07:00

1140 lines
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/*-*-linux-c-*-*/
/*
Copyright (C) 2008 Cezary Jackiewicz <cezary.jackiewicz (at) gmail.com>
based on MSI driver
Copyright (C) 2006 Lennart Poettering <mzxreary (at) 0pointer (dot) de>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA.
*/
/*
* 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%20service%20manual-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/fb.h>
#include <acpi/video.h>
/* ======= */
/* Defines */
/* ======= */
#define DRIVER_NAME "compal-laptop"
#define DRIVER_VERSION "0.2.7"
#define BACKLIGHT_LEVEL_ADDR 0xB9
#define BACKLIGHT_LEVEL_MAX 7
#define BACKLIGHT_STATE_ADDR 0x59
#define BACKLIGHT_STATE_ON_DATA 0xE1
#define BACKLIGHT_STATE_OFF_DATA 0xE2
#define WAKE_UP_ADDR 0xA4
#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 0xBB
#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 0x46
#define PWM_DISABLE_ADDR 0x59
#define PWM_DISABLE_DATA 0xA5
#define PWM_ENABLE_ADDR 0x59
#define PWM_ENABLE_DATA 0xA8
#define FAN_ADDRESS 0x46
#define FAN_DATA 0x81
#define FAN_FULL_ON_CMD 0x59 /* Doesn't seem to work. Just */
#define FAN_FULL_ON_ENABLE 0x76 /* force the pwm signal to its */
#define FAN_FULL_ON_DISABLE 0x77 /* maximum value instead */
#define TEMP_CPU 0xB0
#define TEMP_CPU_LOCAL 0xB1
#define TEMP_CPU_DTS 0xB5
#define TEMP_NORTHBRIDGE 0xB6
#define TEMP_VGA 0xB4
#define TEMP_SKIN 0xB2
#define BAT_MANUFACTURER_NAME_ADDR 0x10
#define BAT_MANUFACTURER_NAME_LEN 9
#define BAT_MODEL_NAME_ADDR 0x19
#define BAT_MODEL_NAME_LEN 6
#define BAT_SERIAL_NUMBER_ADDR 0xC4
#define BAT_SERIAL_NUMBER_LEN 5
#define BAT_CHARGE_NOW 0xC2
#define BAT_CHARGE_DESIGN 0xCA
#define BAT_VOLTAGE_NOW 0xC6
#define BAT_VOLTAGE_DESIGN 0xC8
#define BAT_CURRENT_NOW 0xD0
#define BAT_CURRENT_AVG 0xD2
#define BAT_POWER 0xD4
#define BAT_CAPACITY 0xCE
#define BAT_TEMP 0xD6
#define BAT_TEMP_AVG 0xD7
#define BAT_STATUS0 0xC1
#define BAT_STATUS1 0xF0
#define BAT_STATUS2 0xF1
#define BAT_STOP_CHARGE1 0xF2
#define BAT_STOP_CHARGE2 0xF3
#define BAT_CHARGE_LIMIT 0x03
#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 0x4F (do an ec_transaction writing 0x33
* into 0x4F and read a few bytes from the output, like so:
* u8 writeData = 0x33;
* ec_transaction(0x4F, &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;
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((b->props.power == FB_BLANK_UNBLANK)
&& !(b->props.state & BL_CORE_SUSPENDED)
&& !(b->props.state & BL_CORE_FBBLANK));
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 sprintf(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 sprintf(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 sprintf(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 sprintf(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 sprintf(buf, "%d\n", 1000 * (int)ec_read_s8(ADDRESS)); \
} \
static ssize_t label_##POSTFIX(struct device *dev, \
struct device_attribute *attr, char *buf) \
{ \
return sprintf(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(wake_up_pme,
0644, wake_up_pme_show, wake_up_pme_store);
static DEVICE_ATTR(wake_up_modem,
0644, wake_up_modem_show, wake_up_modem_store);
static DEVICE_ATTR(wake_up_lan,
0644, wake_up_lan_show, wake_up_lan_store);
static DEVICE_ATTR(wake_up_wlan,
0644, wake_up_wlan_show, wake_up_wlan_store);
static DEVICE_ATTR(wake_up_key,
0644, wake_up_key_show, wake_up_key_store);
static DEVICE_ATTR(wake_up_mouse,
0644, wake_up_mouse_show, wake_up_mouse_store);
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 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 int compal_probe(struct platform_device *);
static int compal_remove(struct platform_device *);
static struct platform_driver compal_driver = {
.driver = {
.name = DRIVER_NAME,
},
.probe = compal_probe,
.remove = compal_remove,
};
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 struct dmi_system_id __initdata compal_dmi_table[] = {
{
.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 __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, -1);
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 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 __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");
}
static int compal_remove(struct platform_device *pdev)
{
struct compal_data *data;
if (!extra_features)
return 0;
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);
return 0;
}
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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