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![Dawei Li](/assets/img/avatar_default.png)
For bus-based driver, device removal is implemented as:
1 device_remove()->
2 bus->remove()->
3 driver->remove()
Driver core needs no inform from callee(bus driver) about the
result of remove callback. In that case, commit fc7a6209d5
("bus: Make remove callback return void") forces bus_type::remove
be void-returned.
Now we have the situation that both 1 & 2 of calling chain are
void-returned, so it does not make much sense for 3(driver->remove)
to return non-void to its caller.
So the basic idea behind this change is making remove() callback of
any bus-based driver to be void-returned.
This change, for itself, is for device drivers based on acpi-bus.
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Lee Jones <lee@kernel.org>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dawei Li <set_pte_at@outlook.com>
Reviewed-by: Maximilian Luz <luzmaximilian@gmail.com> # for drivers/platform/surface/*
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
1031 lines
28 KiB
C
1031 lines
28 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*-*-linux-c-*-*/
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/*
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Copyright (C) 2007,2008 Jonathan Woithe <jwoithe@just42.net>
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Copyright (C) 2008 Peter Gruber <nokos@gmx.net>
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Copyright (C) 2008 Tony Vroon <tony@linx.net>
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Based on earlier work:
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Copyright (C) 2003 Shane Spencer <shane@bogomip.com>
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Adrian Yee <brewt-fujitsu@brewt.org>
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Templated from msi-laptop.c and thinkpad_acpi.c which is copyright
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by its respective authors.
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*/
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/*
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* fujitsu-laptop.c - Fujitsu laptop support, providing access to additional
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* features made available on a range of Fujitsu laptops including the
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* P2xxx/P5xxx/S6xxx/S7xxx series.
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*
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* This driver implements a vendor-specific backlight control interface for
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* Fujitsu laptops and provides support for hotkeys present on certain Fujitsu
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* laptops.
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*
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* This driver has been tested on a Fujitsu Lifebook S6410, S7020 and
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* P8010. It should work on most P-series and S-series Lifebooks, but
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* YMMV.
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*
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* The module parameter use_alt_lcd_levels switches between different ACPI
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* brightness controls which are used by different Fujitsu laptops. In most
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* cases the correct method is automatically detected. "use_alt_lcd_levels=1"
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* is applicable for a Fujitsu Lifebook S6410 if autodetection fails.
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*
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/acpi.h>
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#include <linux/bitops.h>
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#include <linux/dmi.h>
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#include <linux/backlight.h>
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#include <linux/fb.h>
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#include <linux/input.h>
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#include <linux/input/sparse-keymap.h>
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#include <linux/kfifo.h>
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#include <linux/leds.h>
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#include <linux/platform_device.h>
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#include <acpi/video.h>
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#define FUJITSU_DRIVER_VERSION "0.6.0"
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#define FUJITSU_LCD_N_LEVELS 8
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#define ACPI_FUJITSU_CLASS "fujitsu"
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#define ACPI_FUJITSU_BL_HID "FUJ02B1"
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#define ACPI_FUJITSU_BL_DRIVER_NAME "Fujitsu laptop FUJ02B1 ACPI brightness driver"
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#define ACPI_FUJITSU_BL_DEVICE_NAME "Fujitsu FUJ02B1"
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#define ACPI_FUJITSU_LAPTOP_HID "FUJ02E3"
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#define ACPI_FUJITSU_LAPTOP_DRIVER_NAME "Fujitsu laptop FUJ02E3 ACPI hotkeys driver"
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#define ACPI_FUJITSU_LAPTOP_DEVICE_NAME "Fujitsu FUJ02E3"
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#define ACPI_FUJITSU_NOTIFY_CODE 0x80
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/* FUNC interface - command values */
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#define FUNC_FLAGS BIT(12)
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#define FUNC_LEDS (BIT(12) | BIT(0))
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#define FUNC_BUTTONS (BIT(12) | BIT(1))
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#define FUNC_BACKLIGHT (BIT(12) | BIT(2))
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/* FUNC interface - responses */
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#define UNSUPPORTED_CMD 0x80000000
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/* FUNC interface - status flags */
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#define FLAG_RFKILL BIT(5)
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#define FLAG_LID BIT(8)
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#define FLAG_DOCK BIT(9)
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#define FLAG_TOUCHPAD_TOGGLE BIT(26)
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#define FLAG_MICMUTE BIT(29)
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#define FLAG_SOFTKEYS (FLAG_RFKILL | FLAG_TOUCHPAD_TOGGLE | FLAG_MICMUTE)
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/* FUNC interface - LED control */
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#define FUNC_LED_OFF BIT(0)
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#define FUNC_LED_ON (BIT(0) | BIT(16) | BIT(17))
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#define LOGOLAMP_POWERON BIT(13)
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#define LOGOLAMP_ALWAYS BIT(14)
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#define KEYBOARD_LAMPS BIT(8)
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#define RADIO_LED_ON BIT(5)
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#define ECO_LED BIT(16)
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#define ECO_LED_ON BIT(19)
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/* FUNC interface - backlight power control */
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#define BACKLIGHT_PARAM_POWER BIT(2)
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#define BACKLIGHT_OFF (BIT(0) | BIT(1))
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#define BACKLIGHT_ON 0
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/* Scancodes read from the GIRB register */
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#define KEY1_CODE 0x410
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#define KEY2_CODE 0x411
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#define KEY3_CODE 0x412
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#define KEY4_CODE 0x413
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#define KEY5_CODE 0x420
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/* Hotkey ringbuffer limits */
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#define MAX_HOTKEY_RINGBUFFER_SIZE 100
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#define RINGBUFFERSIZE 40
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/* Module parameters */
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static int use_alt_lcd_levels = -1;
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static bool disable_brightness_adjust;
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/* Device controlling the backlight and associated keys */
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struct fujitsu_bl {
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struct input_dev *input;
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char phys[32];
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struct backlight_device *bl_device;
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unsigned int max_brightness;
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unsigned int brightness_level;
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};
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static struct fujitsu_bl *fujitsu_bl;
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/* Device used to access hotkeys and other features on the laptop */
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struct fujitsu_laptop {
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struct input_dev *input;
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char phys[32];
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struct platform_device *pf_device;
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struct kfifo fifo;
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spinlock_t fifo_lock;
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int flags_supported;
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int flags_state;
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};
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static struct acpi_device *fext;
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/* Fujitsu ACPI interface function */
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static int call_fext_func(struct acpi_device *device,
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int func, int op, int feature, int state)
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{
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union acpi_object params[4] = {
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{ .integer.type = ACPI_TYPE_INTEGER, .integer.value = func },
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{ .integer.type = ACPI_TYPE_INTEGER, .integer.value = op },
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{ .integer.type = ACPI_TYPE_INTEGER, .integer.value = feature },
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{ .integer.type = ACPI_TYPE_INTEGER, .integer.value = state }
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};
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struct acpi_object_list arg_list = { 4, params };
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unsigned long long value;
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acpi_status status;
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status = acpi_evaluate_integer(device->handle, "FUNC", &arg_list,
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&value);
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if (ACPI_FAILURE(status)) {
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acpi_handle_err(device->handle, "Failed to evaluate FUNC\n");
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return -ENODEV;
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}
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acpi_handle_debug(device->handle,
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"FUNC 0x%x (args 0x%x, 0x%x, 0x%x) returned 0x%x\n",
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func, op, feature, state, (int)value);
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return value;
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}
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/* Hardware access for LCD brightness control */
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static int set_lcd_level(struct acpi_device *device, int level)
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{
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struct fujitsu_bl *priv = acpi_driver_data(device);
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acpi_status status;
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char *method;
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switch (use_alt_lcd_levels) {
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case -1:
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if (acpi_has_method(device->handle, "SBL2"))
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method = "SBL2";
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else
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method = "SBLL";
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break;
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case 1:
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method = "SBL2";
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break;
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default:
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method = "SBLL";
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break;
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}
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acpi_handle_debug(device->handle, "set lcd level via %s [%d]\n", method,
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level);
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if (level < 0 || level >= priv->max_brightness)
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return -EINVAL;
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status = acpi_execute_simple_method(device->handle, method, level);
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if (ACPI_FAILURE(status)) {
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acpi_handle_err(device->handle, "Failed to evaluate %s\n",
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method);
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return -ENODEV;
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}
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priv->brightness_level = level;
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return 0;
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}
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static int get_lcd_level(struct acpi_device *device)
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{
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struct fujitsu_bl *priv = acpi_driver_data(device);
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unsigned long long state = 0;
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acpi_status status = AE_OK;
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acpi_handle_debug(device->handle, "get lcd level via GBLL\n");
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status = acpi_evaluate_integer(device->handle, "GBLL", NULL, &state);
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if (ACPI_FAILURE(status))
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return 0;
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priv->brightness_level = state & 0x0fffffff;
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return priv->brightness_level;
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}
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static int get_max_brightness(struct acpi_device *device)
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{
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struct fujitsu_bl *priv = acpi_driver_data(device);
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unsigned long long state = 0;
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acpi_status status = AE_OK;
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acpi_handle_debug(device->handle, "get max lcd level via RBLL\n");
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status = acpi_evaluate_integer(device->handle, "RBLL", NULL, &state);
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if (ACPI_FAILURE(status))
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return -1;
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priv->max_brightness = state;
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return priv->max_brightness;
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}
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/* Backlight device stuff */
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static int bl_get_brightness(struct backlight_device *b)
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{
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struct acpi_device *device = bl_get_data(b);
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return b->props.power == FB_BLANK_POWERDOWN ? 0 : get_lcd_level(device);
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}
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static int bl_update_status(struct backlight_device *b)
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{
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struct acpi_device *device = bl_get_data(b);
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if (fext) {
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if (b->props.power == FB_BLANK_POWERDOWN)
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call_fext_func(fext, FUNC_BACKLIGHT, 0x1,
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BACKLIGHT_PARAM_POWER, BACKLIGHT_OFF);
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else
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call_fext_func(fext, FUNC_BACKLIGHT, 0x1,
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BACKLIGHT_PARAM_POWER, BACKLIGHT_ON);
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}
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return set_lcd_level(device, b->props.brightness);
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}
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static const struct backlight_ops fujitsu_bl_ops = {
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.get_brightness = bl_get_brightness,
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.update_status = bl_update_status,
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};
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static ssize_t lid_show(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct fujitsu_laptop *priv = dev_get_drvdata(dev);
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if (!(priv->flags_supported & FLAG_LID))
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return sprintf(buf, "unknown\n");
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if (priv->flags_state & FLAG_LID)
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return sprintf(buf, "open\n");
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else
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return sprintf(buf, "closed\n");
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}
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static ssize_t dock_show(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct fujitsu_laptop *priv = dev_get_drvdata(dev);
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if (!(priv->flags_supported & FLAG_DOCK))
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return sprintf(buf, "unknown\n");
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if (priv->flags_state & FLAG_DOCK)
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return sprintf(buf, "docked\n");
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else
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return sprintf(buf, "undocked\n");
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}
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static ssize_t radios_show(struct device *dev, struct device_attribute *attr,
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char *buf)
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{
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struct fujitsu_laptop *priv = dev_get_drvdata(dev);
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if (!(priv->flags_supported & FLAG_RFKILL))
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return sprintf(buf, "unknown\n");
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if (priv->flags_state & FLAG_RFKILL)
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return sprintf(buf, "on\n");
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else
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return sprintf(buf, "killed\n");
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}
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static DEVICE_ATTR_RO(lid);
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static DEVICE_ATTR_RO(dock);
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static DEVICE_ATTR_RO(radios);
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static struct attribute *fujitsu_pf_attributes[] = {
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&dev_attr_lid.attr,
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&dev_attr_dock.attr,
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&dev_attr_radios.attr,
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NULL
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};
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static const struct attribute_group fujitsu_pf_attribute_group = {
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.attrs = fujitsu_pf_attributes
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};
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static struct platform_driver fujitsu_pf_driver = {
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.driver = {
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.name = "fujitsu-laptop",
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}
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};
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/* ACPI device for LCD brightness control */
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static const struct key_entry keymap_backlight[] = {
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{ KE_KEY, true, { KEY_BRIGHTNESSUP } },
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{ KE_KEY, false, { KEY_BRIGHTNESSDOWN } },
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{ KE_END, 0 }
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};
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static int acpi_fujitsu_bl_input_setup(struct acpi_device *device)
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{
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struct fujitsu_bl *priv = acpi_driver_data(device);
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int ret;
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priv->input = devm_input_allocate_device(&device->dev);
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if (!priv->input)
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return -ENOMEM;
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snprintf(priv->phys, sizeof(priv->phys), "%s/video/input0",
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acpi_device_hid(device));
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priv->input->name = acpi_device_name(device);
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priv->input->phys = priv->phys;
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priv->input->id.bustype = BUS_HOST;
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priv->input->id.product = 0x06;
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ret = sparse_keymap_setup(priv->input, keymap_backlight, NULL);
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if (ret)
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return ret;
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return input_register_device(priv->input);
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}
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static int fujitsu_backlight_register(struct acpi_device *device)
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{
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struct fujitsu_bl *priv = acpi_driver_data(device);
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const struct backlight_properties props = {
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.brightness = priv->brightness_level,
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.max_brightness = priv->max_brightness - 1,
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.type = BACKLIGHT_PLATFORM
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};
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struct backlight_device *bd;
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bd = devm_backlight_device_register(&device->dev, "fujitsu-laptop",
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&device->dev, device,
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&fujitsu_bl_ops, &props);
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if (IS_ERR(bd))
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return PTR_ERR(bd);
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priv->bl_device = bd;
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return 0;
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}
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static int acpi_fujitsu_bl_add(struct acpi_device *device)
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{
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struct fujitsu_bl *priv;
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int ret;
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if (acpi_video_get_backlight_type() != acpi_backlight_vendor)
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return -ENODEV;
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priv = devm_kzalloc(&device->dev, sizeof(*priv), GFP_KERNEL);
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if (!priv)
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return -ENOMEM;
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fujitsu_bl = priv;
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strcpy(acpi_device_name(device), ACPI_FUJITSU_BL_DEVICE_NAME);
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strcpy(acpi_device_class(device), ACPI_FUJITSU_CLASS);
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device->driver_data = priv;
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pr_info("ACPI: %s [%s]\n",
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acpi_device_name(device), acpi_device_bid(device));
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if (get_max_brightness(device) <= 0)
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priv->max_brightness = FUJITSU_LCD_N_LEVELS;
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get_lcd_level(device);
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ret = acpi_fujitsu_bl_input_setup(device);
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if (ret)
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return ret;
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return fujitsu_backlight_register(device);
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}
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/* Brightness notify */
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static void acpi_fujitsu_bl_notify(struct acpi_device *device, u32 event)
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{
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struct fujitsu_bl *priv = acpi_driver_data(device);
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int oldb, newb;
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if (event != ACPI_FUJITSU_NOTIFY_CODE) {
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acpi_handle_info(device->handle, "unsupported event [0x%x]\n",
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event);
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sparse_keymap_report_event(priv->input, -1, 1, true);
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return;
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}
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oldb = priv->brightness_level;
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get_lcd_level(device);
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newb = priv->brightness_level;
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acpi_handle_debug(device->handle,
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"brightness button event [%i -> %i]\n", oldb, newb);
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if (oldb == newb)
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return;
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if (!disable_brightness_adjust)
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set_lcd_level(device, newb);
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sparse_keymap_report_event(priv->input, oldb < newb, 1, true);
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}
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/* ACPI device for hotkey handling */
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static const struct key_entry keymap_default[] = {
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{ KE_KEY, KEY1_CODE, { KEY_PROG1 } },
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{ KE_KEY, KEY2_CODE, { KEY_PROG2 } },
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{ KE_KEY, KEY3_CODE, { KEY_PROG3 } },
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{ KE_KEY, KEY4_CODE, { KEY_PROG4 } },
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{ KE_KEY, KEY5_CODE, { KEY_RFKILL } },
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/* Soft keys read from status flags */
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{ KE_KEY, FLAG_RFKILL, { KEY_RFKILL } },
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{ KE_KEY, FLAG_TOUCHPAD_TOGGLE, { KEY_TOUCHPAD_TOGGLE } },
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{ KE_KEY, FLAG_MICMUTE, { KEY_MICMUTE } },
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{ KE_END, 0 }
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};
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static const struct key_entry keymap_s64x0[] = {
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{ KE_KEY, KEY1_CODE, { KEY_SCREENLOCK } }, /* "Lock" */
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{ KE_KEY, KEY2_CODE, { KEY_HELP } }, /* "Mobility Center */
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{ KE_KEY, KEY3_CODE, { KEY_PROG3 } },
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{ KE_KEY, KEY4_CODE, { KEY_PROG4 } },
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{ KE_END, 0 }
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};
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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");
|