diff options
Diffstat (limited to 'drivers/platform/x86/fujitsu-laptop.c')
| -rw-r--r-- | drivers/platform/x86/fujitsu-laptop.c | 1031 |
1 files changed, 1031 insertions, 0 deletions
diff --git a/drivers/platform/x86/fujitsu-laptop.c b/drivers/platform/x86/fujitsu-laptop.c new file mode 100644 index 0000000000..085e044e88 --- /dev/null +++ b/drivers/platform/x86/fujitsu-laptop.c @@ -0,0 +1,1031 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/*-*-linux-c-*-*/ + +/* + Copyright (C) 2007,2008 Jonathan Woithe <jwoithe@just42.net> + Copyright (C) 2008 Peter Gruber <nokos@gmx.net> + Copyright (C) 2008 Tony Vroon <tony@linx.net> + Based on earlier work: + Copyright (C) 2003 Shane Spencer <shane@bogomip.com> + Adrian Yee <brewt-fujitsu@brewt.org> + + Templated from msi-laptop.c and thinkpad_acpi.c which is copyright + by its respective authors. + + */ + +/* + * fujitsu-laptop.c - Fujitsu laptop support, providing access to additional + * features made available on a range of Fujitsu laptops including the + * P2xxx/P5xxx/S6xxx/S7xxx series. + * + * This driver implements a vendor-specific backlight control interface for + * Fujitsu laptops and provides support for hotkeys present on certain Fujitsu + * laptops. + * + * This driver has been tested on a Fujitsu Lifebook S6410, S7020 and + * P8010. It should work on most P-series and S-series Lifebooks, but + * YMMV. + * + * The module parameter use_alt_lcd_levels switches between different ACPI + * brightness controls which are used by different Fujitsu laptops. In most + * cases the correct method is automatically detected. "use_alt_lcd_levels=1" + * is applicable for a Fujitsu Lifebook S6410 if autodetection fails. + * + */ + +#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/bitops.h> +#include <linux/dmi.h> +#include <linux/backlight.h> +#include <linux/fb.h> +#include <linux/input.h> +#include <linux/input/sparse-keymap.h> +#include <linux/kfifo.h> +#include <linux/leds.h> +#include <linux/platform_device.h> +#include <acpi/video.h> + +#define FUJITSU_DRIVER_VERSION "0.6.0" + +#define FUJITSU_LCD_N_LEVELS 8 + +#define ACPI_FUJITSU_CLASS "fujitsu" +#define ACPI_FUJITSU_BL_HID "FUJ02B1" +#define ACPI_FUJITSU_BL_DRIVER_NAME "Fujitsu laptop FUJ02B1 ACPI brightness driver" +#define ACPI_FUJITSU_BL_DEVICE_NAME "Fujitsu FUJ02B1" +#define ACPI_FUJITSU_LAPTOP_HID "FUJ02E3" +#define ACPI_FUJITSU_LAPTOP_DRIVER_NAME "Fujitsu laptop FUJ02E3 ACPI hotkeys driver" +#define ACPI_FUJITSU_LAPTOP_DEVICE_NAME "Fujitsu FUJ02E3" + +#define ACPI_FUJITSU_NOTIFY_CODE 0x80 + +/* FUNC interface - command values */ +#define FUNC_FLAGS BIT(12) +#define FUNC_LEDS (BIT(12) | BIT(0)) +#define FUNC_BUTTONS (BIT(12) | BIT(1)) +#define FUNC_BACKLIGHT (BIT(12) | BIT(2)) + +/* FUNC interface - responses */ +#define UNSUPPORTED_CMD 0x80000000 + +/* FUNC interface - status flags */ +#define FLAG_RFKILL BIT(5) +#define FLAG_LID BIT(8) +#define FLAG_DOCK BIT(9) +#define FLAG_TOUCHPAD_TOGGLE BIT(26) +#define FLAG_MICMUTE BIT(29) +#define FLAG_SOFTKEYS (FLAG_RFKILL | FLAG_TOUCHPAD_TOGGLE | FLAG_MICMUTE) + +/* FUNC interface - LED control */ +#define FUNC_LED_OFF BIT(0) +#define FUNC_LED_ON (BIT(0) | BIT(16) | BIT(17)) +#define LOGOLAMP_POWERON BIT(13) +#define LOGOLAMP_ALWAYS BIT(14) +#define KEYBOARD_LAMPS BIT(8) +#define RADIO_LED_ON BIT(5) +#define ECO_LED BIT(16) +#define ECO_LED_ON BIT(19) + +/* FUNC interface - backlight power control */ +#define BACKLIGHT_PARAM_POWER BIT(2) +#define BACKLIGHT_OFF (BIT(0) | BIT(1)) +#define BACKLIGHT_ON 0 + +/* Scancodes read from the GIRB register */ +#define KEY1_CODE 0x410 +#define KEY2_CODE 0x411 +#define KEY3_CODE 0x412 +#define KEY4_CODE 0x413 +#define KEY5_CODE 0x420 + +/* Hotkey ringbuffer limits */ +#define MAX_HOTKEY_RINGBUFFER_SIZE 100 +#define RINGBUFFERSIZE 40 + +/* Module parameters */ +static int use_alt_lcd_levels = -1; +static bool disable_brightness_adjust; + +/* Device controlling the backlight and associated keys */ +struct fujitsu_bl { + struct input_dev *input; + char phys[32]; + struct backlight_device *bl_device; + unsigned int max_brightness; + unsigned int brightness_level; +}; + +static struct fujitsu_bl *fujitsu_bl; + +/* Device used to access hotkeys and other features on the laptop */ +struct fujitsu_laptop { + struct input_dev *input; + char phys[32]; + struct platform_device *pf_device; + struct kfifo fifo; + spinlock_t fifo_lock; + int flags_supported; + int flags_state; +}; + +static struct acpi_device *fext; + +/* Fujitsu ACPI interface function */ + +static int call_fext_func(struct acpi_device *device, + int func, int op, int feature, int state) +{ + union acpi_object params[4] = { + { .integer.type = ACPI_TYPE_INTEGER, .integer.value = func }, + { .integer.type = ACPI_TYPE_INTEGER, .integer.value = op }, + { .integer.type = ACPI_TYPE_INTEGER, .integer.value = feature }, + { .integer.type = ACPI_TYPE_INTEGER, .integer.value = state } + }; + struct acpi_object_list arg_list = { 4, params }; + unsigned long long value; + acpi_status status; + + status = acpi_evaluate_integer(device->handle, "FUNC", &arg_list, + &value); + if (ACPI_FAILURE(status)) { + acpi_handle_err(device->handle, "Failed to evaluate FUNC\n"); + return -ENODEV; + } + + acpi_handle_debug(device->handle, + "FUNC 0x%x (args 0x%x, 0x%x, 0x%x) returned 0x%x\n", + func, op, feature, state, (int)value); + return value; +} + +/* Hardware access for LCD brightness control */ + +static int set_lcd_level(struct acpi_device *device, int level) +{ + struct fujitsu_bl *priv = acpi_driver_data(device); + acpi_status status; + char *method; + + switch (use_alt_lcd_levels) { + case -1: + if (acpi_has_method(device->handle, "SBL2")) + method = "SBL2"; + else + method = "SBLL"; + break; + case 1: + method = "SBL2"; + break; + default: + method = "SBLL"; + break; + } + + acpi_handle_debug(device->handle, "set lcd level via %s [%d]\n", method, + level); + + if (level < 0 || level >= priv->max_brightness) + return -EINVAL; + + status = acpi_execute_simple_method(device->handle, method, level); + if (ACPI_FAILURE(status)) { + acpi_handle_err(device->handle, "Failed to evaluate %s\n", + method); + return -ENODEV; + } + + priv->brightness_level = level; + + return 0; +} + +static int get_lcd_level(struct acpi_device *device) +{ + struct fujitsu_bl *priv = acpi_driver_data(device); + unsigned long long state = 0; + acpi_status status = AE_OK; + + acpi_handle_debug(device->handle, "get lcd level via GBLL\n"); + + status = acpi_evaluate_integer(device->handle, "GBLL", NULL, &state); + if (ACPI_FAILURE(status)) + return 0; + + priv->brightness_level = state & 0x0fffffff; + + return priv->brightness_level; +} + +static int get_max_brightness(struct acpi_device *device) +{ + struct fujitsu_bl *priv = acpi_driver_data(device); + unsigned long long state = 0; + acpi_status status = AE_OK; + + acpi_handle_debug(device->handle, "get max lcd level via RBLL\n"); + + status = acpi_evaluate_integer(device->handle, "RBLL", NULL, &state); + if (ACPI_FAILURE(status)) + return -1; + + priv->max_brightness = state; + + return priv->max_brightness; +} + +/* Backlight device stuff */ + +static int bl_get_brightness(struct backlight_device *b) +{ + struct acpi_device *device = bl_get_data(b); + + return b->props.power == FB_BLANK_POWERDOWN ? 0 : get_lcd_level(device); +} + +static int bl_update_status(struct backlight_device *b) +{ + struct acpi_device *device = bl_get_data(b); + + if (fext) { + if (b->props.power == FB_BLANK_POWERDOWN) + call_fext_func(fext, FUNC_BACKLIGHT, 0x1, + BACKLIGHT_PARAM_POWER, BACKLIGHT_OFF); + else + call_fext_func(fext, FUNC_BACKLIGHT, 0x1, + BACKLIGHT_PARAM_POWER, BACKLIGHT_ON); + } + + return set_lcd_level(device, b->props.brightness); +} + +static const struct backlight_ops fujitsu_bl_ops = { + .get_brightness = bl_get_brightness, + .update_status = bl_update_status, +}; + +static ssize_t lid_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct fujitsu_laptop *priv = dev_get_drvdata(dev); + + if (!(priv->flags_supported & FLAG_LID)) + return sprintf(buf, "unknown\n"); + if (priv->flags_state & FLAG_LID) + return sprintf(buf, "open\n"); + else + return sprintf(buf, "closed\n"); +} + +static ssize_t dock_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct fujitsu_laptop *priv = dev_get_drvdata(dev); + + if (!(priv->flags_supported & FLAG_DOCK)) + return sprintf(buf, "unknown\n"); + if (priv->flags_state & FLAG_DOCK) + return sprintf(buf, "docked\n"); + else + return sprintf(buf, "undocked\n"); +} + +static ssize_t radios_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct fujitsu_laptop *priv = dev_get_drvdata(dev); + + if (!(priv->flags_supported & FLAG_RFKILL)) + return sprintf(buf, "unknown\n"); + if (priv->flags_state & FLAG_RFKILL) + return sprintf(buf, "on\n"); + else + return sprintf(buf, "killed\n"); +} + +static DEVICE_ATTR_RO(lid); +static DEVICE_ATTR_RO(dock); +static DEVICE_ATTR_RO(radios); + +static struct attribute *fujitsu_pf_attributes[] = { + &dev_attr_lid.attr, + &dev_attr_dock.attr, + &dev_attr_radios.attr, + NULL +}; + +static const struct attribute_group fujitsu_pf_attribute_group = { + .attrs = fujitsu_pf_attributes +}; + +static struct platform_driver fujitsu_pf_driver = { + .driver = { + .name = "fujitsu-laptop", + } +}; + +/* ACPI device for LCD brightness control */ + +static const struct key_entry keymap_backlight[] = { + { KE_KEY, true, { KEY_BRIGHTNESSUP } }, + { KE_KEY, false, { KEY_BRIGHTNESSDOWN } }, + { KE_END, 0 } +}; + +static int acpi_fujitsu_bl_input_setup(struct acpi_device *device) +{ + struct fujitsu_bl *priv = acpi_driver_data(device); + int ret; + + priv->input = devm_input_allocate_device(&device->dev); + if (!priv->input) + return -ENOMEM; + + snprintf(priv->phys, sizeof(priv->phys), "%s/video/input0", + acpi_device_hid(device)); + + priv->input->name = acpi_device_name(device); + priv->input->phys = priv->phys; + priv->input->id.bustype = BUS_HOST; + priv->input->id.product = 0x06; + + ret = sparse_keymap_setup(priv->input, keymap_backlight, NULL); + if (ret) + return ret; + + return input_register_device(priv->input); +} + +static int fujitsu_backlight_register(struct acpi_device *device) +{ + struct fujitsu_bl *priv = acpi_driver_data(device); + const struct backlight_properties props = { + .brightness = priv->brightness_level, + .max_brightness = priv->max_brightness - 1, + .type = BACKLIGHT_PLATFORM + }; + struct backlight_device *bd; + + bd = devm_backlight_device_register(&device->dev, "fujitsu-laptop", + &device->dev, device, + &fujitsu_bl_ops, &props); + if (IS_ERR(bd)) + return PTR_ERR(bd); + + priv->bl_device = bd; + + return 0; +} + +static int acpi_fujitsu_bl_add(struct acpi_device *device) +{ + struct fujitsu_bl *priv; + int ret; + + if (acpi_video_get_backlight_type() != acpi_backlight_vendor) + return -ENODEV; + + priv = devm_kzalloc(&device->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + fujitsu_bl = priv; + strcpy(acpi_device_name(device), ACPI_FUJITSU_BL_DEVICE_NAME); + strcpy(acpi_device_class(device), ACPI_FUJITSU_CLASS); + device->driver_data = priv; + + pr_info("ACPI: %s [%s]\n", + acpi_device_name(device), acpi_device_bid(device)); + + if (get_max_brightness(device) <= 0) + priv->max_brightness = FUJITSU_LCD_N_LEVELS; + get_lcd_level(device); + + ret = acpi_fujitsu_bl_input_setup(device); + if (ret) + return ret; + + return fujitsu_backlight_register(device); +} + +/* Brightness notify */ + +static void acpi_fujitsu_bl_notify(struct acpi_device *device, u32 event) +{ + struct fujitsu_bl *priv = acpi_driver_data(device); + int oldb, newb; + + if (event != ACPI_FUJITSU_NOTIFY_CODE) { + acpi_handle_info(device->handle, "unsupported event [0x%x]\n", + event); + sparse_keymap_report_event(priv->input, -1, 1, true); + return; + } + + oldb = priv->brightness_level; + get_lcd_level(device); + newb = priv->brightness_level; + + acpi_handle_debug(device->handle, + "brightness button event [%i -> %i]\n", oldb, newb); + + if (oldb == newb) + return; + + if (!disable_brightness_adjust) + set_lcd_level(device, newb); + + sparse_keymap_report_event(priv->input, oldb < newb, 1, true); +} + +/* ACPI device for hotkey handling */ + +static const struct key_entry keymap_default[] = { + { KE_KEY, KEY1_CODE, { KEY_PROG1 } }, + { KE_KEY, KEY2_CODE, { KEY_PROG2 } }, + { KE_KEY, KEY3_CODE, { KEY_PROG3 } }, + { KE_KEY, KEY4_CODE, { KEY_PROG4 } }, + { KE_KEY, KEY5_CODE, { KEY_RFKILL } }, + /* Soft keys read from status flags */ + { KE_KEY, FLAG_RFKILL, { KEY_RFKILL } }, + { KE_KEY, FLAG_TOUCHPAD_TOGGLE, { KEY_TOUCHPAD_TOGGLE } }, + { KE_KEY, FLAG_MICMUTE, { KEY_MICMUTE } }, + { KE_END, 0 } +}; + +static const struct key_entry keymap_s64x0[] = { + { KE_KEY, KEY1_CODE, { KEY_SCREENLOCK } }, /* "Lock" */ + { KE_KEY, KEY2_CODE, { KEY_HELP } }, /* "Mobility Center */ + { KE_KEY, KEY3_CODE, { KEY_PROG3 } }, + { KE_KEY, KEY4_CODE, { KEY_PROG4 } }, + { KE_END, 0 } +}; + +static const struct key_entry keymap_p8010[] = { + { KE_KEY, KEY1_CODE, { KEY_HELP } }, /* "Support" */ + { KE_KEY, KEY2_CODE, { KEY_PROG2 } }, + { KE_KEY, KEY3_CODE, { KEY_SWITCHVIDEOMODE } }, /* "Presentation" */ + { KE_KEY, KEY4_CODE, { KEY_WWW } }, /* "WWW" */ + { KE_END, 0 } +}; + +static const struct key_entry *keymap = keymap_default; + +static int fujitsu_laptop_dmi_keymap_override(const struct dmi_system_id *id) +{ + pr_info("Identified laptop model '%s'\n", id->ident); + keymap = id->driver_data; + return 1; +} + +static const struct dmi_system_id fujitsu_laptop_dmi_table[] = { + { + .callback = fujitsu_laptop_dmi_keymap_override, + .ident = "Fujitsu Siemens S6410", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), + DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6410"), + }, + .driver_data = (void *)keymap_s64x0 + }, + { + .callback = fujitsu_laptop_dmi_keymap_override, + .ident = "Fujitsu Siemens S6420", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), + DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK S6420"), + }, + .driver_data = (void *)keymap_s64x0 + }, + { + .callback = fujitsu_laptop_dmi_keymap_override, + .ident = "Fujitsu LifeBook P8010", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), + DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook P8010"), + }, + .driver_data = (void *)keymap_p8010 + }, + {} +}; + +static int acpi_fujitsu_laptop_input_setup(struct acpi_device *device) +{ + struct fujitsu_laptop *priv = acpi_driver_data(device); + int ret; + + priv->input = devm_input_allocate_device(&device->dev); + if (!priv->input) + return -ENOMEM; + + snprintf(priv->phys, sizeof(priv->phys), "%s/input0", + acpi_device_hid(device)); + + priv->input->name = acpi_device_name(device); + priv->input->phys = priv->phys; + priv->input->id.bustype = BUS_HOST; + + dmi_check_system(fujitsu_laptop_dmi_table); + ret = sparse_keymap_setup(priv->input, keymap, NULL); + if (ret) + return ret; + + return input_register_device(priv->input); +} + +static int fujitsu_laptop_platform_add(struct acpi_device *device) +{ + struct fujitsu_laptop *priv = acpi_driver_data(device); + int ret; + + priv->pf_device = platform_device_alloc("fujitsu-laptop", PLATFORM_DEVID_NONE); + if (!priv->pf_device) + return -ENOMEM; + + platform_set_drvdata(priv->pf_device, priv); + + ret = platform_device_add(priv->pf_device); + if (ret) + goto err_put_platform_device; + + ret = sysfs_create_group(&priv->pf_device->dev.kobj, + &fujitsu_pf_attribute_group); + if (ret) + goto err_del_platform_device; + + return 0; + +err_del_platform_device: + platform_device_del(priv->pf_device); +err_put_platform_device: + platform_device_put(priv->pf_device); + + return ret; +} + +static void fujitsu_laptop_platform_remove(struct acpi_device *device) +{ + struct fujitsu_laptop *priv = acpi_driver_data(device); + + sysfs_remove_group(&priv->pf_device->dev.kobj, + &fujitsu_pf_attribute_group); + platform_device_unregister(priv->pf_device); +} + +static int logolamp_set(struct led_classdev *cdev, + enum led_brightness brightness) +{ + struct acpi_device *device = to_acpi_device(cdev->dev->parent); + int poweron = FUNC_LED_ON, always = FUNC_LED_ON; + int ret; + + if (brightness < LED_HALF) + poweron = FUNC_LED_OFF; + + if (brightness < LED_FULL) + always = FUNC_LED_OFF; + + ret = call_fext_func(device, FUNC_LEDS, 0x1, LOGOLAMP_POWERON, poweron); + if (ret < 0) + return ret; + + return call_fext_func(device, FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, always); +} + +static enum led_brightness logolamp_get(struct led_classdev *cdev) +{ + struct acpi_device *device = to_acpi_device(cdev->dev->parent); + int ret; + + ret = call_fext_func(device, FUNC_LEDS, 0x2, LOGOLAMP_ALWAYS, 0x0); + if (ret == FUNC_LED_ON) + return LED_FULL; + + ret = call_fext_func(device, FUNC_LEDS, 0x2, LOGOLAMP_POWERON, 0x0); + if (ret == FUNC_LED_ON) + return LED_HALF; + + return LED_OFF; +} + +static int kblamps_set(struct led_classdev *cdev, + enum led_brightness brightness) +{ + struct acpi_device *device = to_acpi_device(cdev->dev->parent); + + if (brightness >= LED_FULL) + return call_fext_func(device, FUNC_LEDS, 0x1, KEYBOARD_LAMPS, + FUNC_LED_ON); + else + return call_fext_func(device, FUNC_LEDS, 0x1, KEYBOARD_LAMPS, + FUNC_LED_OFF); +} + +static enum led_brightness kblamps_get(struct led_classdev *cdev) +{ + struct acpi_device *device = to_acpi_device(cdev->dev->parent); + enum led_brightness brightness = LED_OFF; + + if (call_fext_func(device, + FUNC_LEDS, 0x2, KEYBOARD_LAMPS, 0x0) == FUNC_LED_ON) + brightness = LED_FULL; + + return brightness; +} + +static int radio_led_set(struct led_classdev *cdev, + enum led_brightness brightness) +{ + struct acpi_device *device = to_acpi_device(cdev->dev->parent); + + if (brightness >= LED_FULL) + return call_fext_func(device, FUNC_FLAGS, 0x5, RADIO_LED_ON, + RADIO_LED_ON); + else + return call_fext_func(device, FUNC_FLAGS, 0x5, RADIO_LED_ON, + 0x0); +} + +static enum led_brightness radio_led_get(struct led_classdev *cdev) +{ + struct acpi_device *device = to_acpi_device(cdev->dev->parent); + enum led_brightness brightness = LED_OFF; + + if (call_fext_func(device, FUNC_FLAGS, 0x4, 0x0, 0x0) & RADIO_LED_ON) + brightness = LED_FULL; + + return brightness; +} + +static int eco_led_set(struct led_classdev *cdev, + enum led_brightness brightness) +{ + struct acpi_device *device = to_acpi_device(cdev->dev->parent); + int curr; + + curr = call_fext_func(device, FUNC_LEDS, 0x2, ECO_LED, 0x0); + if (brightness >= LED_FULL) + return call_fext_func(device, FUNC_LEDS, 0x1, ECO_LED, + curr | ECO_LED_ON); + else + return call_fext_func(device, FUNC_LEDS, 0x1, ECO_LED, + curr & ~ECO_LED_ON); +} + +static enum led_brightness eco_led_get(struct led_classdev *cdev) +{ + struct acpi_device *device = to_acpi_device(cdev->dev->parent); + enum led_brightness brightness = LED_OFF; + + if (call_fext_func(device, FUNC_LEDS, 0x2, ECO_LED, 0x0) & ECO_LED_ON) + brightness = LED_FULL; + + return brightness; +} + +static int acpi_fujitsu_laptop_leds_register(struct acpi_device *device) +{ + struct fujitsu_laptop *priv = acpi_driver_data(device); + struct led_classdev *led; + int ret; + + if (call_fext_func(device, + FUNC_LEDS, 0x0, 0x0, 0x0) & LOGOLAMP_POWERON) { + led = devm_kzalloc(&device->dev, sizeof(*led), GFP_KERNEL); + if (!led) + return -ENOMEM; + + led->name = "fujitsu::logolamp"; + led->brightness_set_blocking = logolamp_set; + led->brightness_get = logolamp_get; + ret = devm_led_classdev_register(&device->dev, led); + if (ret) + return ret; + } + + if ((call_fext_func(device, + FUNC_LEDS, 0x0, 0x0, 0x0) & KEYBOARD_LAMPS) && + (call_fext_func(device, FUNC_BUTTONS, 0x0, 0x0, 0x0) == 0x0)) { + led = devm_kzalloc(&device->dev, sizeof(*led), GFP_KERNEL); + if (!led) + return -ENOMEM; + + led->name = "fujitsu::kblamps"; + led->brightness_set_blocking = kblamps_set; + led->brightness_get = kblamps_get; + ret = devm_led_classdev_register(&device->dev, led); + if (ret) + return ret; + } + + /* + * Some Fujitsu laptops have a radio toggle button in place of a slide + * switch and all such machines appear to also have an RF LED. Based on + * comparing DSDT tables of four Fujitsu Lifebook models (E744, E751, + * S7110, S8420; the first one has a radio toggle button, the other + * three have slide switches), bit 17 of flags_supported (the value + * returned by method S000 of ACPI device FUJ02E3) seems to indicate + * whether given model has a radio toggle button. + */ + if (priv->flags_supported & BIT(17)) { + led = devm_kzalloc(&device->dev, sizeof(*led), GFP_KERNEL); + if (!led) + return -ENOMEM; + + led->name = "fujitsu::radio_led"; + led->brightness_set_blocking = radio_led_set; + led->brightness_get = radio_led_get; + led->default_trigger = "rfkill-any"; + ret = devm_led_classdev_register(&device->dev, led); + if (ret) + return ret; + } + + /* Support for eco led is not always signaled in bit corresponding + * to the bit used to control the led. According to the DSDT table, + * bit 14 seems to indicate presence of said led as well. + * Confirm by testing the status. + */ + if ((call_fext_func(device, FUNC_LEDS, 0x0, 0x0, 0x0) & BIT(14)) && + (call_fext_func(device, + FUNC_LEDS, 0x2, ECO_LED, 0x0) != UNSUPPORTED_CMD)) { + led = devm_kzalloc(&device->dev, sizeof(*led), GFP_KERNEL); + if (!led) + return -ENOMEM; + + led->name = "fujitsu::eco_led"; + led->brightness_set_blocking = eco_led_set; + led->brightness_get = eco_led_get; + ret = devm_led_classdev_register(&device->dev, led); + if (ret) + return ret; + } + + return 0; +} + +static int acpi_fujitsu_laptop_add(struct acpi_device *device) +{ + struct fujitsu_laptop *priv; + int ret, i = 0; + + priv = devm_kzalloc(&device->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + WARN_ONCE(fext, "More than one FUJ02E3 ACPI device was found. Driver may not work as intended."); + fext = device; + + strcpy(acpi_device_name(device), ACPI_FUJITSU_LAPTOP_DEVICE_NAME); + strcpy(acpi_device_class(device), ACPI_FUJITSU_CLASS); + device->driver_data = priv; + + /* kfifo */ + spin_lock_init(&priv->fifo_lock); + ret = kfifo_alloc(&priv->fifo, RINGBUFFERSIZE * sizeof(int), + GFP_KERNEL); + if (ret) + return ret; + + pr_info("ACPI: %s [%s]\n", + acpi_device_name(device), acpi_device_bid(device)); + + while (call_fext_func(device, FUNC_BUTTONS, 0x1, 0x0, 0x0) != 0 && + i++ < MAX_HOTKEY_RINGBUFFER_SIZE) + ; /* No action, result is discarded */ + acpi_handle_debug(device->handle, "Discarded %i ringbuffer entries\n", + i); + + priv->flags_supported = call_fext_func(device, FUNC_FLAGS, 0x0, 0x0, + 0x0); + + /* Make sure our bitmask of supported functions is cleared if the + RFKILL function block is not implemented, like on the S7020. */ + if (priv->flags_supported == UNSUPPORTED_CMD) + priv->flags_supported = 0; + + if (priv->flags_supported) + priv->flags_state = call_fext_func(device, FUNC_FLAGS, 0x4, 0x0, + 0x0); + + /* Suspect this is a keymap of the application panel, print it */ + acpi_handle_info(device->handle, "BTNI: [0x%x]\n", + call_fext_func(device, FUNC_BUTTONS, 0x0, 0x0, 0x0)); + + /* Sync backlight power status */ + if (fujitsu_bl && fujitsu_bl->bl_device && + acpi_video_get_backlight_type() == acpi_backlight_vendor) { + if (call_fext_func(fext, FUNC_BACKLIGHT, 0x2, + BACKLIGHT_PARAM_POWER, 0x0) == BACKLIGHT_OFF) + fujitsu_bl->bl_device->props.power = FB_BLANK_POWERDOWN; + else + fujitsu_bl->bl_device->props.power = FB_BLANK_UNBLANK; + } + + ret = acpi_fujitsu_laptop_input_setup(device); + if (ret) + goto err_free_fifo; + + ret = acpi_fujitsu_laptop_leds_register(device); + if (ret) + goto err_free_fifo; + + ret = fujitsu_laptop_platform_add(device); + if (ret) + goto err_free_fifo; + + return 0; + +err_free_fifo: + kfifo_free(&priv->fifo); + + return ret; +} + +static void acpi_fujitsu_laptop_remove(struct acpi_device *device) +{ + struct fujitsu_laptop *priv = acpi_driver_data(device); + + fujitsu_laptop_platform_remove(device); + + kfifo_free(&priv->fifo); +} + +static void acpi_fujitsu_laptop_press(struct acpi_device *device, int scancode) +{ + struct fujitsu_laptop *priv = acpi_driver_data(device); + int ret; + + ret = kfifo_in_locked(&priv->fifo, (unsigned char *)&scancode, + sizeof(scancode), &priv->fifo_lock); + if (ret != sizeof(scancode)) { + dev_info(&priv->input->dev, "Could not push scancode [0x%x]\n", + scancode); + return; + } + sparse_keymap_report_event(priv->input, scancode, 1, false); + dev_dbg(&priv->input->dev, "Push scancode into ringbuffer [0x%x]\n", + scancode); +} + +static void acpi_fujitsu_laptop_release(struct acpi_device *device) +{ + struct fujitsu_laptop *priv = acpi_driver_data(device); + int scancode, ret; + + while (true) { + ret = kfifo_out_locked(&priv->fifo, (unsigned char *)&scancode, + sizeof(scancode), &priv->fifo_lock); + if (ret != sizeof(scancode)) + return; + sparse_keymap_report_event(priv->input, scancode, 0, false); + dev_dbg(&priv->input->dev, + "Pop scancode from ringbuffer [0x%x]\n", scancode); + } +} + +static void acpi_fujitsu_laptop_notify(struct acpi_device *device, u32 event) +{ + struct fujitsu_laptop *priv = acpi_driver_data(device); + unsigned long flags; + int scancode, i = 0; + unsigned int irb; + + if (event != ACPI_FUJITSU_NOTIFY_CODE) { + acpi_handle_info(device->handle, "Unsupported event [0x%x]\n", + event); + sparse_keymap_report_event(priv->input, -1, 1, true); + return; + } + + if (priv->flags_supported) + priv->flags_state = call_fext_func(device, FUNC_FLAGS, 0x4, 0x0, + 0x0); + + while ((irb = call_fext_func(device, + FUNC_BUTTONS, 0x1, 0x0, 0x0)) != 0 && + i++ < MAX_HOTKEY_RINGBUFFER_SIZE) { + scancode = irb & 0x4ff; + if (sparse_keymap_entry_from_scancode(priv->input, scancode)) + acpi_fujitsu_laptop_press(device, scancode); + else if (scancode == 0) + acpi_fujitsu_laptop_release(device); + else + acpi_handle_info(device->handle, + "Unknown GIRB result [%x]\n", irb); + } + + /* + * First seen on the Skylake-based Lifebook E736/E746/E756), the + * touchpad toggle hotkey (Fn+F4) is handled in software. Other models + * have since added additional "soft keys". These are reported in the + * status flags queried using FUNC_FLAGS. + */ + if (priv->flags_supported & (FLAG_SOFTKEYS)) { + flags = call_fext_func(device, FUNC_FLAGS, 0x1, 0x0, 0x0); + flags &= (FLAG_SOFTKEYS); + for_each_set_bit(i, &flags, BITS_PER_LONG) + sparse_keymap_report_event(priv->input, BIT(i), 1, true); + } +} + +/* Initialization */ + +static const struct acpi_device_id fujitsu_bl_device_ids[] = { + {ACPI_FUJITSU_BL_HID, 0}, + {"", 0}, +}; + +static struct acpi_driver acpi_fujitsu_bl_driver = { + .name = ACPI_FUJITSU_BL_DRIVER_NAME, + .class = ACPI_FUJITSU_CLASS, + .ids = fujitsu_bl_device_ids, + .ops = { + .add = acpi_fujitsu_bl_add, + .notify = acpi_fujitsu_bl_notify, + }, +}; + +static const struct acpi_device_id fujitsu_laptop_device_ids[] = { + {ACPI_FUJITSU_LAPTOP_HID, 0}, + {"", 0}, +}; + +static struct acpi_driver acpi_fujitsu_laptop_driver = { + .name = ACPI_FUJITSU_LAPTOP_DRIVER_NAME, + .class = ACPI_FUJITSU_CLASS, + .ids = fujitsu_laptop_device_ids, + .ops = { + .add = acpi_fujitsu_laptop_add, + .remove = acpi_fujitsu_laptop_remove, + .notify = acpi_fujitsu_laptop_notify, + }, +}; + +static const struct acpi_device_id fujitsu_ids[] __used = { + {ACPI_FUJITSU_BL_HID, 0}, + {ACPI_FUJITSU_LAPTOP_HID, 0}, + {"", 0} +}; +MODULE_DEVICE_TABLE(acpi, fujitsu_ids); + +static int __init fujitsu_init(void) +{ + int ret; + + ret = acpi_bus_register_driver(&acpi_fujitsu_bl_driver); + if (ret) + return ret; + + /* Register platform stuff */ + + ret = platform_driver_register(&fujitsu_pf_driver); + if (ret) + goto err_unregister_acpi; + + /* Register laptop driver */ + + ret = acpi_bus_register_driver(&acpi_fujitsu_laptop_driver); + if (ret) + goto err_unregister_platform_driver; + + pr_info("driver " FUJITSU_DRIVER_VERSION " successfully loaded\n"); + + return 0; + +err_unregister_platform_driver: + platform_driver_unregister(&fujitsu_pf_driver); +err_unregister_acpi: + acpi_bus_unregister_driver(&acpi_fujitsu_bl_driver); + + return ret; +} + +static void __exit fujitsu_cleanup(void) +{ + acpi_bus_unregister_driver(&acpi_fujitsu_laptop_driver); + + platform_driver_unregister(&fujitsu_pf_driver); + + acpi_bus_unregister_driver(&acpi_fujitsu_bl_driver); + + pr_info("driver unloaded\n"); +} + +module_init(fujitsu_init); +module_exit(fujitsu_cleanup); + +module_param(use_alt_lcd_levels, int, 0644); +MODULE_PARM_DESC(use_alt_lcd_levels, "Interface used for setting LCD brightness level (-1 = auto, 0 = force SBLL, 1 = force SBL2)"); +module_param(disable_brightness_adjust, bool, 0644); +MODULE_PARM_DESC(disable_brightness_adjust, "Disable LCD brightness adjustment"); + +MODULE_AUTHOR("Jonathan Woithe, Peter Gruber, Tony Vroon"); +MODULE_DESCRIPTION("Fujitsu laptop extras support"); +MODULE_VERSION(FUJITSU_DRIVER_VERSION); +MODULE_LICENSE("GPL"); |