diff options
Diffstat (limited to 'drivers/platform/x86/compal-laptop.c')
| -rw-r--r-- | drivers/platform/x86/compal-laptop.c | 1113 |
1 files changed, 1113 insertions, 0 deletions
diff --git a/drivers/platform/x86/compal-laptop.c b/drivers/platform/x86/compal-laptop.c new file mode 100644 index 0000000000..61c745490d --- /dev/null +++ b/drivers/platform/x86/compal-laptop.c @@ -0,0 +1,1113 @@ +// 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) 0pointer (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%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 = 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 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_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_new = 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"); |