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alistair23-linux/drivers/platform/x86/fujitsu-tablet.c
Thomas Gleixner b1fb60d7df treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 414 
Based on 1 normalized pattern(s):

  you can redistribute and or modify this program under the terms of
  the gnu general public license version 2 as published by the free
  software foundation this program is distributed in the hope that it
  will be useful but without any warranty without even the implied
  warranty of merchantability or fitness for a particular purpose see
  the gnu general public license for more details you should have
  received a copy of the gnu general public license along with this
  program if not write to the free software foundation inc 59 temple
  place suite 330 boston ma 02111 1307 usa

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 2 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Armijn Hemel <armijn@tjaldur.nl>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190531190113.054726165@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-05 17:37:14 +02:00

543 lines
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C
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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2006-2012 Robert Gerlach <khnz@gmx.de>
* Copyright (C) 2005-2006 Jan Rychter <jan@rychter.com>
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/bitops.h>
#include <linux/io.h>
#include <linux/ioport.h>
#include <linux/acpi.h>
#include <linux/device.h>
#include <linux/interrupt.h>
#include <linux/input.h>
#include <linux/delay.h>
#include <linux/dmi.h>
#define MODULENAME "fujitsu-tablet"
#define ACPI_FUJITSU_CLASS "fujitsu"
#define INVERT_TABLET_MODE_BIT 0x01
#define INVERT_DOCK_STATE_BIT 0x02
#define FORCE_TABLET_MODE_IF_UNDOCK 0x04
#define KEYMAP_LEN 16
static const struct acpi_device_id fujitsu_ids[] = {
{ .id = "FUJ02BD" },
{ .id = "FUJ02BF" },
{ .id = "" }
};
struct fujitsu_config {
unsigned short keymap[KEYMAP_LEN];
unsigned int quirks;
};
static unsigned short keymap_Lifebook_Tseries[KEYMAP_LEN] __initdata = {
KEY_RESERVED,
KEY_RESERVED,
KEY_RESERVED,
KEY_RESERVED,
KEY_SCROLLDOWN,
KEY_SCROLLUP,
KEY_ROTATE_DISPLAY,
KEY_LEFTCTRL,
KEY_BRIGHTNESSUP,
KEY_BRIGHTNESSDOWN,
KEY_BRIGHTNESS_ZERO,
KEY_RESERVED,
KEY_RESERVED,
KEY_RESERVED,
KEY_RESERVED,
KEY_LEFTALT
};
static unsigned short keymap_Lifebook_T901[KEYMAP_LEN] __initdata = {
KEY_RESERVED,
KEY_RESERVED,
KEY_RESERVED,
KEY_RESERVED,
KEY_SCROLLDOWN,
KEY_SCROLLUP,
KEY_CYCLEWINDOWS,
KEY_LEFTCTRL,
KEY_RESERVED,
KEY_RESERVED,
KEY_RESERVED,
KEY_RESERVED,
KEY_RESERVED,
KEY_RESERVED,
KEY_RESERVED,
KEY_LEFTMETA
};
static unsigned short keymap_Lifebook_T902[KEYMAP_LEN] __initdata = {
KEY_RESERVED,
KEY_VOLUMEDOWN,
KEY_VOLUMEUP,
KEY_CYCLEWINDOWS,
KEY_PROG1,
KEY_PROG2,
KEY_LEFTMETA,
KEY_RESERVED,
KEY_RESERVED,
KEY_RESERVED,
KEY_RESERVED,
KEY_RESERVED,
KEY_RESERVED,
KEY_RESERVED,
KEY_RESERVED,
KEY_RESERVED,
};
static unsigned short keymap_Lifebook_U810[KEYMAP_LEN] __initdata = {
KEY_RESERVED,
KEY_RESERVED,
KEY_RESERVED,
KEY_RESERVED,
KEY_PROG1,
KEY_PROG2,
KEY_ROTATE_DISPLAY,
KEY_RESERVED,
KEY_RESERVED,
KEY_RESERVED,
KEY_UP,
KEY_DOWN,
KEY_RESERVED,
KEY_RESERVED,
KEY_LEFTCTRL,
KEY_LEFTALT
};
static unsigned short keymap_Stylistic_Tseries[KEYMAP_LEN] __initdata = {
KEY_RESERVED,
KEY_RESERVED,
KEY_RESERVED,
KEY_RESERVED,
KEY_PRINT,
KEY_BACKSPACE,
KEY_SPACE,
KEY_ENTER,
KEY_BRIGHTNESSUP,
KEY_BRIGHTNESSDOWN,
KEY_DOWN,
KEY_UP,
KEY_SCROLLUP,
KEY_SCROLLDOWN,
KEY_LEFTCTRL,
KEY_LEFTALT
};
static unsigned short keymap_Stylistic_ST5xxx[KEYMAP_LEN] __initdata = {
KEY_RESERVED,
KEY_RESERVED,
KEY_RESERVED,
KEY_RESERVED,
KEY_MAIL,
KEY_ROTATE_DISPLAY,
KEY_ESC,
KEY_ENTER,
KEY_BRIGHTNESSUP,
KEY_BRIGHTNESSDOWN,
KEY_DOWN,
KEY_UP,
KEY_SCROLLUP,
KEY_SCROLLDOWN,
KEY_LEFTCTRL,
KEY_LEFTALT
};
static struct {
struct input_dev *idev;
struct fujitsu_config config;
unsigned long prev_keymask;
char phys[21];
int irq;
int io_base;
int io_length;
} fujitsu;
static u8 fujitsu_ack(void)
{
return inb(fujitsu.io_base + 2);
}
static u8 fujitsu_status(void)
{
return inb(fujitsu.io_base + 6);
}
static u8 fujitsu_read_register(const u8 addr)
{
outb(addr, fujitsu.io_base);
return inb(fujitsu.io_base + 4);
}
static void fujitsu_send_state(void)
{
int state;
int dock, tablet_mode;
state = fujitsu_read_register(0xdd);
dock = state & 0x02;
if (fujitsu.config.quirks & INVERT_DOCK_STATE_BIT)
dock = !dock;
if ((fujitsu.config.quirks & FORCE_TABLET_MODE_IF_UNDOCK) && (!dock)) {
tablet_mode = 1;
} else{
tablet_mode = state & 0x01;
if (fujitsu.config.quirks & INVERT_TABLET_MODE_BIT)
tablet_mode = !tablet_mode;
}
input_report_switch(fujitsu.idev, SW_DOCK, dock);
input_report_switch(fujitsu.idev, SW_TABLET_MODE, tablet_mode);
input_sync(fujitsu.idev);
}
static void fujitsu_reset(void)
{
int timeout = 50;
fujitsu_ack();
while ((fujitsu_status() & 0x02) && (--timeout))
msleep(20);
fujitsu_send_state();
}
static int input_fujitsu_setup(struct device *parent, const char *name,
const char *phys)
{
struct input_dev *idev;
int error;
int i;
idev = input_allocate_device();
if (!idev)
return -ENOMEM;
idev->dev.parent = parent;
idev->phys = phys;
idev->name = name;
idev->id.bustype = BUS_HOST;
idev->id.vendor = 0x1734; /* Fujitsu Siemens Computer GmbH */
idev->id.product = 0x0001;
idev->id.version = 0x0101;
idev->keycode = fujitsu.config.keymap;
idev->keycodesize = sizeof(fujitsu.config.keymap[0]);
idev->keycodemax = ARRAY_SIZE(fujitsu.config.keymap);
__set_bit(EV_REP, idev->evbit);
for (i = 0; i < ARRAY_SIZE(fujitsu.config.keymap); i++)
if (fujitsu.config.keymap[i])
input_set_capability(idev, EV_KEY, fujitsu.config.keymap[i]);
input_set_capability(idev, EV_MSC, MSC_SCAN);
input_set_capability(idev, EV_SW, SW_DOCK);
input_set_capability(idev, EV_SW, SW_TABLET_MODE);
error = input_register_device(idev);
if (error) {
input_free_device(idev);
return error;
}
fujitsu.idev = idev;
return 0;
}
static void input_fujitsu_remove(void)
{
input_unregister_device(fujitsu.idev);
}
static irqreturn_t fujitsu_interrupt(int irq, void *dev_id)
{
unsigned long keymask, changed;
unsigned int keycode;
int pressed;
int i;
if (unlikely(!(fujitsu_status() & 0x01)))
return IRQ_NONE;
fujitsu_send_state();
keymask = fujitsu_read_register(0xde);
keymask |= fujitsu_read_register(0xdf) << 8;
keymask ^= 0xffff;
changed = keymask ^ fujitsu.prev_keymask;
if (changed) {
fujitsu.prev_keymask = keymask;
for_each_set_bit(i, &changed, KEYMAP_LEN) {
keycode = fujitsu.config.keymap[i];
pressed = keymask & changed & BIT(i);
if (pressed)
input_event(fujitsu.idev, EV_MSC, MSC_SCAN, i);
input_report_key(fujitsu.idev, keycode, pressed);
input_sync(fujitsu.idev);
}
}
fujitsu_ack();
return IRQ_HANDLED;
}
static void __init fujitsu_dmi_common(const struct dmi_system_id *dmi)
{
pr_info("%s\n", dmi->ident);
memcpy(fujitsu.config.keymap, dmi->driver_data,
sizeof(fujitsu.config.keymap));
}
static int __init fujitsu_dmi_lifebook(const struct dmi_system_id *dmi)
{
fujitsu_dmi_common(dmi);
fujitsu.config.quirks |= INVERT_TABLET_MODE_BIT;
return 1;
}
static int __init fujitsu_dmi_stylistic(const struct dmi_system_id *dmi)
{
fujitsu_dmi_common(dmi);
fujitsu.config.quirks |= FORCE_TABLET_MODE_IF_UNDOCK;
fujitsu.config.quirks |= INVERT_DOCK_STATE_BIT;
return 1;
}
static const struct dmi_system_id dmi_ids[] __initconst = {
{
.callback = fujitsu_dmi_lifebook,
.ident = "Fujitsu Lifebook T901",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook T901")
},
.driver_data = keymap_Lifebook_T901
},
{
.callback = fujitsu_dmi_lifebook,
.ident = "Fujitsu Lifebook T901",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK T901")
},
.driver_data = keymap_Lifebook_T901
},
{
.callback = fujitsu_dmi_lifebook,
.ident = "Fujitsu Lifebook T902",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK T902")
},
.driver_data = keymap_Lifebook_T902
},
{
.callback = fujitsu_dmi_lifebook,
.ident = "Fujitsu Siemens P/T Series",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK")
},
.driver_data = keymap_Lifebook_Tseries
},
{
.callback = fujitsu_dmi_lifebook,
.ident = "Fujitsu Lifebook T Series",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook T")
},
.driver_data = keymap_Lifebook_Tseries
},
{
.callback = fujitsu_dmi_stylistic,
.ident = "Fujitsu Siemens Stylistic T Series",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
DMI_MATCH(DMI_PRODUCT_NAME, "Stylistic T")
},
.driver_data = keymap_Stylistic_Tseries
},
{
.callback = fujitsu_dmi_lifebook,
.ident = "Fujitsu LifeBook U810",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook U810")
},
.driver_data = keymap_Lifebook_U810
},
{
.callback = fujitsu_dmi_stylistic,
.ident = "Fujitsu Siemens Stylistic ST5xxx Series",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
DMI_MATCH(DMI_PRODUCT_NAME, "STYLISTIC ST5")
},
.driver_data = keymap_Stylistic_ST5xxx
},
{
.callback = fujitsu_dmi_stylistic,
.ident = "Fujitsu Siemens Stylistic ST5xxx Series",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
DMI_MATCH(DMI_PRODUCT_NAME, "Stylistic ST5")
},
.driver_data = keymap_Stylistic_ST5xxx
},
{
.callback = fujitsu_dmi_lifebook,
.ident = "Unknown (using defaults)",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, ""),
DMI_MATCH(DMI_PRODUCT_NAME, "")
},
.driver_data = keymap_Lifebook_Tseries
},
{ NULL }
};
static acpi_status fujitsu_walk_resources(struct acpi_resource *res, void *data)
{
switch (res->type) {
case ACPI_RESOURCE_TYPE_IRQ:
fujitsu.irq = res->data.irq.interrupts[0];
return AE_OK;
case ACPI_RESOURCE_TYPE_IO:
fujitsu.io_base = res->data.io.minimum;
fujitsu.io_length = res->data.io.address_length;
return AE_OK;
case ACPI_RESOURCE_TYPE_END_TAG:
if (fujitsu.irq && fujitsu.io_base)
return AE_OK;
else
return AE_NOT_FOUND;
default:
return AE_ERROR;
}
}
static int acpi_fujitsu_add(struct acpi_device *adev)
{
acpi_status status;
int error;
if (!adev)
return -EINVAL;
status = acpi_walk_resources(adev->handle, METHOD_NAME__CRS,
fujitsu_walk_resources, NULL);
if (ACPI_FAILURE(status) || !fujitsu.irq || !fujitsu.io_base)
return -ENODEV;
sprintf(acpi_device_name(adev), "Fujitsu %s", acpi_device_hid(adev));
sprintf(acpi_device_class(adev), "%s", ACPI_FUJITSU_CLASS);
snprintf(fujitsu.phys, sizeof(fujitsu.phys),
"%s/input0", acpi_device_hid(adev));
error = input_fujitsu_setup(&adev->dev,
acpi_device_name(adev), fujitsu.phys);
if (error)
return error;
if (!request_region(fujitsu.io_base, fujitsu.io_length, MODULENAME)) {
input_fujitsu_remove();
return -EBUSY;
}
fujitsu_reset();
error = request_irq(fujitsu.irq, fujitsu_interrupt,
IRQF_SHARED, MODULENAME, fujitsu_interrupt);
if (error) {
release_region(fujitsu.io_base, fujitsu.io_length);
input_fujitsu_remove();
return error;
}
return 0;
}
static int acpi_fujitsu_remove(struct acpi_device *adev)
{
free_irq(fujitsu.irq, fujitsu_interrupt);
release_region(fujitsu.io_base, fujitsu.io_length);
input_fujitsu_remove();
return 0;
}
#ifdef CONFIG_PM_SLEEP
static int acpi_fujitsu_resume(struct device *dev)
{
fujitsu_reset();
return 0;
}
#endif
static SIMPLE_DEV_PM_OPS(acpi_fujitsu_pm, NULL, acpi_fujitsu_resume);
static struct acpi_driver acpi_fujitsu_driver = {
.name = MODULENAME,
.class = "hotkey",
.ids = fujitsu_ids,
.ops = {
.add = acpi_fujitsu_add,
.remove = acpi_fujitsu_remove,
},
.drv.pm = &acpi_fujitsu_pm,
};
static int __init fujitsu_module_init(void)
{
int error;
dmi_check_system(dmi_ids);
error = acpi_bus_register_driver(&acpi_fujitsu_driver);
if (error)
return error;
return 0;
}
static void __exit fujitsu_module_exit(void)
{
acpi_bus_unregister_driver(&acpi_fujitsu_driver);
}
module_init(fujitsu_module_init);
module_exit(fujitsu_module_exit);
MODULE_AUTHOR("Robert Gerlach <khnz@gmx.de>");
MODULE_DESCRIPTION("Fujitsu tablet pc extras driver");
MODULE_LICENSE("GPL");
MODULE_VERSION("2.5");
MODULE_DEVICE_TABLE(acpi, fujitsu_ids);
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