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-rw-r--r--drivers/platform/x86/fujitsu-laptop.c1033
1 files changed, 1033 insertions, 0 deletions
diff --git a/drivers/platform/x86/fujitsu-laptop.c b/drivers/platform/x86/fujitsu-laptop.c
new file mode 100644
index 000000000..b543d117b
--- /dev/null
+++ b/drivers/platform/x86/fujitsu-laptop.c
@@ -0,0 +1,1033 @@
+// 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 int 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);
+
+ return 0;
+}
+
+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");