// 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 * ([email protected]): * 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) … #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 … #define DRIVER_VERSION … #define BACKLIGHT_LEVEL_ADDR … #define BACKLIGHT_LEVEL_MAX … #define BACKLIGHT_STATE_ADDR … #define BACKLIGHT_STATE_ON_DATA … #define BACKLIGHT_STATE_OFF_DATA … #define WAKE_UP_ADDR … #define WAKE_UP_PME … #define WAKE_UP_MODEM … #define WAKE_UP_LAN … #define WAKE_UP_WLAN … #define WAKE_UP_KEY … #define WAKE_UP_MOUSE … #define WIRELESS_ADDR … #define WIRELESS_WLAN … #define WIRELESS_BT … #define WIRELESS_WLAN_EXISTS … #define WIRELESS_BT_EXISTS … #define WIRELESS_KILLSWITCH … #define PWM_ADDRESS … #define PWM_DISABLE_ADDR … #define PWM_DISABLE_DATA … #define PWM_ENABLE_ADDR … #define PWM_ENABLE_DATA … #define FAN_ADDRESS … #define FAN_DATA … #define FAN_FULL_ON_CMD … #define FAN_FULL_ON_ENABLE … #define FAN_FULL_ON_DISABLE … #define TEMP_CPU … #define TEMP_CPU_LOCAL … #define TEMP_CPU_DTS … #define TEMP_NORTHBRIDGE … #define TEMP_VGA … #define TEMP_SKIN … #define BAT_MANUFACTURER_NAME_ADDR … #define BAT_MANUFACTURER_NAME_LEN … #define BAT_MODEL_NAME_ADDR … #define BAT_MODEL_NAME_LEN … #define BAT_SERIAL_NUMBER_ADDR … #define BAT_SERIAL_NUMBER_LEN … #define BAT_CHARGE_NOW … #define BAT_CHARGE_DESIGN … #define BAT_VOLTAGE_NOW … #define BAT_VOLTAGE_DESIGN … #define BAT_CURRENT_NOW … #define BAT_CURRENT_AVG … #define BAT_POWER … #define BAT_CAPACITY … #define BAT_TEMP … #define BAT_TEMP_AVG … #define BAT_STATUS0 … #define BAT_STATUS1 … #define BAT_STATUS2 … #define BAT_STOP_CHARGE1 … #define BAT_STOP_CHARGE2 … #define BAT_CHARGE_LIMIT … #define BAT_CHARGE_LIMIT_MAX … #define BAT_S0_DISCHARGE … #define BAT_S0_DISCHRG_CRITICAL … #define BAT_S0_LOW … #define BAT_S0_CHARGING … #define BAT_S0_AC … #define BAT_S1_EXISTS … #define BAT_S1_FULL … #define BAT_S1_EMPTY … #define BAT_S1_LiION_OR_NiMH … #define BAT_S2_LOW_LOW … #define BAT_STOP_CHRG1_BAD_CELL … #define BAT_STOP_CHRG1_COMM_FAIL … #define BAT_STOP_CHRG1_OVERVOLTAGE … #define BAT_STOP_CHRG1_OVERTEMPERATURE … /* ======= */ /* Structs */ /* ======= */ struct compal_data{ … }; /* =============== */ /* General globals */ /* =============== */ static bool force; module_param(force, bool, 0); MODULE_PARM_DESC(…) …; /* 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] = …; /* ========================= */ /* Hardware access functions */ /* ========================= */ /* General access */ static u8 ec_read_u8(u8 addr) { … } static s8 ec_read_s8(u8 addr) { … } static u16 ec_read_u16(u8 addr) { … } static s16 ec_read_s16(u8 addr) { … } static void ec_read_sequence(u8 addr, u8 *buf, int len) { … } /* Backlight access */ static int set_backlight_level(int level) { … } static int get_backlight_level(void) { … } static void set_backlight_state(bool on) { … } /* Fan control access */ static void pwm_enable_control(void) { … } static void pwm_disable_control(void) { … } static void set_pwm(int pwm) { … } static int get_fan_rpm(void) { … } /* =================== */ /* Interface functions */ /* =================== */ /* Backlight interface */ static int bl_get_brightness(struct backlight_device *b) { … } static int bl_update_status(struct backlight_device *b) { … } static const struct backlight_ops compalbl_ops = …; /* Wireless interface */ static int compal_rfkill_set(void *data, bool blocked) { … } static void compal_rfkill_poll(struct rfkill *rfkill, void *data) { … } static const struct rfkill_ops compal_rfkill_ops = …; /* Wake_up interface */ #define SIMPLE_MASKED_STORE_SHOW(NAME, ADDR, MASK) … 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) { … } static ssize_t pwm_enable_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static ssize_t pwm_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t pwm_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static ssize_t fan_show(struct device *dev, struct device_attribute *attr, char *buf) { … } /* Temperature interface */ #define TEMPERATURE_SHOW_TEMP_AND_LABEL(POSTFIX, ADDRESS, 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) { … } static int bat_health(void) { … } static int bat_is_present(void) { … } static int bat_technology(void) { … } static int bat_capacity_level(void) { … } static int bat_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { … } static int bat_set_property(struct power_supply *psy, enum power_supply_property psp, const union power_supply_propval *val) { … } static int bat_writeable_property(struct power_supply *psy, enum power_supply_property psp) { … } /* ============== */ /* 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[] = …; static const struct attribute_group compal_platform_attr_group = …; static struct attribute *compal_hwmon_attrs[] = …; ATTRIBUTE_GROUPS(…); static enum power_supply_property compal_bat_properties[] = …; 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) { … } static int dmi_check_cb_extra(const struct dmi_system_id *id) { … } static const struct dmi_system_id compal_dmi_table[] __initconst = …; MODULE_DEVICE_TABLE(dmi, compal_dmi_table); static const struct power_supply_desc psy_bat_desc = …; static void initialize_power_supply_data(struct compal_data *data) { … } static void initialize_fan_control_data(struct compal_data *data) { … } static int setup_rfkill(void) { … } static int compal_probe(struct platform_device *pdev) { … } static void compal_remove(struct platform_device *pdev) { … } static struct platform_driver compal_driver = …; static int __init compal_init(void) { … } static void __exit compal_cleanup(void) { … } module_init(…) …; module_exit(compal_cleanup); MODULE_AUTHOR(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_VERSION(…); MODULE_LICENSE(…) …;
Codebase Browser
linux