This is a patch which adds support for the tablet buttons and automatic screen rotation for many Fujitsu tablet PCs.
Signed-off-by: Robert Gerlach <[email protected]> --- Note: This is the third attempt to have this patch accepted, and should settle all known style issues. http://patchwork.kernel.org/patch/57747/ http://patchwork.kernel.org/patch/195352/ MAINTAINERS | 6 drivers/platform/x86/Kconfig | 12 drivers/platform/x86/Makefile | 1 drivers/platform/x86/fujitsu-tablet.c | 480 ++++++++++++++++++++++++++++++++++ 4 files changed, 499 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS --- a/MAINTAINERS +++ b/MAINTAINERS @@ -2523,6 +2523,12 @@ L: [email protected] S: Maintained F: drivers/platform/x86/fujitsu-laptop.c +FUJITSU TABLET EXTRAS +M: Robert Gerlach <[email protected]> +L: [email protected] +S: Maintained +F: drivers/platform/x86/fujitsu-tablet.c + FUSE: FILESYSTEM IN USERSPACE M: Miklos Szeredi <[email protected]> L: [email protected] diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig --- a/drivers/platform/x86/Kconfig +++ b/drivers/platform/x86/Kconfig @@ -125,6 +125,18 @@ config FUJITSU_LAPTOP_DEBUG If you are not sure, say N here. +config FUJITSU_TABLET + tristate "Fujitsu Tablet PC Extras" + depends on X86 + depends on INPUT + default n + ---help--- + Say Y here for support of the tablet buttons and the display + orientation switch, used on many Fujitsu tablet PCs (like + Stylistic ST5xxx, Lifebook P1xxx and Lifebook T-Series). + + If you have a Fujitsu tablet pc, say Y or M here. + config TC1100_WMI tristate "HP Compaq TC1100 Tablet WMI Extras (EXPERIMENTAL)" depends on !X86_64 diff --git a/drivers/platform/x86/Makefile b/drivers/platform/x86/Makefile --- a/drivers/platform/x86/Makefile +++ b/drivers/platform/x86/Makefile @@ -18,6 +18,7 @@ obj-$(CONFIG_SONY_LAPTOP) += sony-laptop.o obj-$(CONFIG_IDEAPAD_ACPI) += ideapad_acpi.o obj-$(CONFIG_THINKPAD_ACPI) += thinkpad_acpi.o obj-$(CONFIG_FUJITSU_LAPTOP) += fujitsu-laptop.o +obj-$(CONFIG_FUJITSU_TABLET) += fujitsu-tablet.o obj-$(CONFIG_PANASONIC_LAPTOP) += panasonic-laptop.o obj-$(CONFIG_INTEL_MENLOW) += intel_menlow.o obj-$(CONFIG_ACPI_WMI) += wmi.o diff --git a/drivers/platform/x86/fujitsu-tablet.c b/drivers/platform/x86/fujitsu-tablet.c new file mode 100644 --- /dev/null +++ b/drivers/platform/x86/fujitsu-tablet.c @@ -0,0 +1,480 @@ +/* Kernel driver for FSC Tablet PC buttons + * + * Copyright (C) 2006-2010 Robert Gerlach <[email protected]> + * Copyright (C) 2005-2006 Jan Rychter <[email protected]> + * + * 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. + */ + +#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/device.h> +#include <linux/platform_device.h> +#include <linux/interrupt.h> +#include <linux/input.h> +#include <linux/delay.h> +#include <linux/dmi.h> + +#define MODULENAME "fujitsu-tablet" + +#define INTERRUPT 5 +#define IO_BASE 0xfd70 + +static const struct acpi_device_id fujitsu_ids[] = { + { .id = "FUJ02BD" }, + { .id = "FUJ02BF" }, + { .id = "" } +}; + +struct fujitsu_config { + int invert_orientation_bit; + unsigned short keymap[16]; +}; + +static struct fujitsu_config config_Lifebook_Tseries __initconst = { + .invert_orientation_bit = 1, + .keymap = { + KEY_RESERVED, + KEY_RESERVED, + KEY_RESERVED, + KEY_RESERVED, + KEY_SCROLLDOWN, + KEY_SCROLLUP, + KEY_DIRECTION, + KEY_LEFTCTRL, + KEY_BRIGHTNESSUP, + KEY_BRIGHTNESSDOWN, + KEY_BRIGHTNESS_ZERO, + KEY_RESERVED, + KEY_RESERVED, + KEY_RESERVED, + KEY_RESERVED, + KEY_LEFTALT + } +}; + +static struct fujitsu_config config_Lifebook_U810 __initconst = { + .invert_orientation_bit = 1, + .keymap = { + KEY_RESERVED, + KEY_RESERVED, + KEY_RESERVED, + KEY_RESERVED, + KEY_PROG1, + KEY_PROG2, + KEY_DIRECTION, + KEY_RESERVED, + KEY_RESERVED, + KEY_RESERVED, + KEY_UP, + KEY_DOWN, + KEY_RESERVED, + KEY_RESERVED, + KEY_FN, + KEY_SLEEP + } +}; + +static struct fujitsu_config config_Stylistic_Tseries __initconst = { + .invert_orientation_bit = 0, + .keymap = { + 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_FN + } +}; + +static struct fujitsu_config config_Stylistic_ST5xxx __initconst = { + .invert_orientation_bit = 0, + .keymap = { + KEY_RESERVED, + KEY_RESERVED, + KEY_RESERVED, + KEY_RESERVED, + KEY_MAIL, + KEY_DIRECTION, + KEY_ESC, + KEY_ENTER, + KEY_BRIGHTNESSUP, + KEY_BRIGHTNESSDOWN, + KEY_DOWN, + KEY_UP, + KEY_SCROLLUP, + KEY_SCROLLDOWN, + KEY_FN, + KEY_LEFTALT + } +}; + +static struct { /* fujitsu_t */ + struct platform_device *pdev; + struct input_dev *idev; + struct fujitsu_config config; + int orientation; + unsigned long prev_keymask; +} fujitsu; + +/*** HELPER *******************************************************************/ + +static inline u8 fujitsu_ack(void) +{ + return inb(IO_BASE+2); +} + +static inline u8 fujitsu_status(void) +{ + return inb(IO_BASE+6); +} + +static inline u8 fujitsu_read_register(const u8 addr) +{ + outb(addr, IO_BASE); + return inb(IO_BASE+4); +} + + +/*** INPUT ********************************************************************/ + +static int __devinit input_fujitsu_setup(struct device *dev) +{ + struct input_dev *idev; + int error; + int x; + + idev = input_allocate_device(); + if (!idev) + return -ENOMEM; + + idev->dev.parent = dev; + idev->phys = KBUILD_MODNAME "/input0"; + idev->name = "Fujitsu tablet buttons"; + 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); + __set_bit(EV_KEY, idev->evbit); + + for (x = 0; x < ARRAY_SIZE(fujitsu.config.keymap); x++) + if (fujitsu.config.keymap[x]) + __set_bit(fujitsu.config.keymap[x], idev->keybit); + + __set_bit(EV_MSC, idev->evbit); + __set_bit(MSC_SCAN, idev->mscbit); + + __set_bit(EV_SW, idev->evbit); + __set_bit(SW_TABLET_MODE, idev->swbit); + + error = input_register_device(idev); + if (error) { + input_free_device(idev); + return error; + } + + fujitsu.idev = idev; + return 0; +} + +static void input_fujitsu_remove(void) +{ + if (fujitsu.idev) + input_unregister_device(fujitsu.idev); +} + +static void fujitsu_report_orientation(void) +{ + struct input_dev *idev = fujitsu.idev; + int orientation = fujitsu_read_register(0xdd); + + if (orientation & 0x02) { + orientation ^= fujitsu.config.invert_orientation_bit; + orientation &= 0x01; + + if (orientation != fujitsu.orientation) { + input_report_switch(idev, SW_TABLET_MODE, + fujitsu.orientation = orientation); + input_sync(idev); + } + } +} + +static void fujitsu_report_key(void) +{ + unsigned long keymask; + unsigned long changed; + + keymask = fujitsu_read_register(0xde); + keymask |= fujitsu_read_register(0xdf) << 8; + keymask ^= 0xffff; + + changed = keymask ^ fujitsu.prev_keymask; + + if (changed) { + int keycode, pressed; + int x = 0; + + /* save current state and filter not changed bits */ + fujitsu.prev_keymask = keymask; + + /* looking for the location of the first bit which is set */ + while (!test_bit(x, &changed)) + x++; + + keycode = fujitsu.config.keymap[x]; + pressed = !!(keymask & changed); + + if (pressed) + input_event(fujitsu.idev, EV_MSC, MSC_SCAN, x); + + input_report_key(fujitsu.idev, keycode, pressed); + input_sync(fujitsu.idev); + } +} + + +/*** INTERRUPT ****************************************************************/ + +static irqreturn_t fujitsu_isr(int irq, void *dev_id) +{ + if (!(fujitsu_status() & 0x01)) + return IRQ_NONE; + + fujitsu_report_orientation(); + fujitsu_report_key(); + fujitsu_ack(); + + return IRQ_HANDLED; +} + + +/*** DEVICE *******************************************************************/ + +static int fujitsu_busywait(void) +{ + int timeout_counter = 50; + + while (fujitsu_status() & 0x02 && --timeout_counter) + msleep(20); + + return !timeout_counter; +} + +static void fujitsu_reset(void) +{ + fujitsu_ack(); + if (fujitsu_busywait()) + printk(KERN_WARNING MODULENAME ": timeout, real reset needed!\n"); +} + +static int __devinit fujitsu_probe(struct platform_device *pdev) +{ + int error; + + error = input_fujitsu_setup(&pdev->dev); + if (error) + goto err_input; + + if (!request_region(IO_BASE, 8, MODULENAME)) { + dev_err(&pdev->dev, "region 0x%04x busy\n", IO_BASE); + error = -EBUSY; + goto err_input; + } + + fujitsu_reset(); + + fujitsu_report_orientation(); + input_sync(fujitsu.idev); + + error = request_irq(INTERRUPT, fujitsu_isr, + IRQF_SHARED, MODULENAME, fujitsu_isr); + if (error) { + dev_err(&pdev->dev, "unable to get irq %d\n", INTERRUPT); + goto err_io; + } + + return 0; + +err_io: + release_region(IO_BASE, 8); +err_input: + input_fujitsu_remove(); + return error; +} + +static int __devexit fujitsu_remove(struct platform_device *pdev) +{ + free_irq(INTERRUPT, fujitsu_isr); + release_region(IO_BASE, 8); + input_fujitsu_remove(); + return 0; +} + +#ifdef CONFIG_PM +static int fujitsu_resume(struct platform_device *pdev) +{ + fujitsu_reset(); + fujitsu_report_orientation(); + return 0; +} +#else +#define fujitsu_resume NULL +#endif + +static struct platform_driver fujitsu_platform_driver = { + .driver = { + .name = MODULENAME, + .owner = THIS_MODULE, + }, + .probe = fujitsu_probe, + .remove = __devexit_p(fujitsu_remove), + .resume = fujitsu_resume, +}; + + +/*** DMI **********************************************************************/ + +static int __init fujitsu_dmi_matched(const struct dmi_system_id *dmi) +{ + printk(KERN_INFO MODULENAME ": %s detected\n", dmi->ident); + memcpy(&fujitsu.config, dmi->driver_data, + sizeof(struct fujitsu_config)); + return 1; +} + +static struct dmi_system_id dmi_ids[] __initdata = { + { + .callback = fujitsu_dmi_matched, + .ident = "Fujitsu Siemens P/T Series", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), + DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK") + }, + .driver_data = &config_Lifebook_Tseries + }, + { + .callback = fujitsu_dmi_matched, + .ident = "Fujitsu Lifebook T Series", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), + DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook T") + }, + .driver_data = &config_Lifebook_Tseries + }, + { + .callback = fujitsu_dmi_matched, + .ident = "Fujitsu Siemens Stylistic T Series", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), + DMI_MATCH(DMI_PRODUCT_NAME, "Stylistic T") + }, + .driver_data = &config_Stylistic_Tseries + }, + { + .callback = fujitsu_dmi_matched, + .ident = "Fujitsu LifeBook U810", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), + DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook U810") + }, + .driver_data = &config_Lifebook_U810 + }, + { + .callback = fujitsu_dmi_matched, + .ident = "Fujitsu Siemens Stylistic ST5xxx Series", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), + DMI_MATCH(DMI_PRODUCT_NAME, "STYLISTIC ST5") + }, + .driver_data = &config_Stylistic_ST5xxx + }, + { + .callback = fujitsu_dmi_matched, + .ident = "Fujitsu Siemens Stylistic ST5xxx Series", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"), + DMI_MATCH(DMI_PRODUCT_NAME, "Stylistic ST5") + }, + .driver_data = &config_Stylistic_ST5xxx + }, + { + .callback = fujitsu_dmi_matched, + .ident = "Unknown (using defaults)", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, ""), + DMI_MATCH(DMI_PRODUCT_NAME, "") + }, + .driver_data = &config_Lifebook_Tseries + }, + { NULL } +}; + + +/*** MODULE *******************************************************************/ + +static int __init fujitsu_module_init(void) +{ + int error; + + dmi_check_system(dmi_ids); + + error = platform_driver_register(&fujitsu_platform_driver); + if (error) + return error; + + fujitsu.pdev = platform_device_register_simple(MODULENAME, -1, NULL, 0); + if (IS_ERR(fujitsu.pdev)) { + error = PTR_ERR(fujitsu.pdev); + platform_driver_unregister(&fujitsu_platform_driver); + return error; + } + + return 0; +} + +static void __exit fujitsu_module_exit(void) +{ + platform_device_unregister(fujitsu.pdev); + platform_driver_unregister(&fujitsu_platform_driver); +} + +module_init(fujitsu_module_init); +module_exit(fujitsu_module_exit); + +MODULE_AUTHOR("Robert Gerlach <[email protected]>"); +MODULE_DESCRIPTION("Fujitsu Siemens tablet button driver"); +MODULE_LICENSE("GPL"); +MODULE_VERSION("git"); + +MODULE_DEVICE_TABLE(acpi, fujitsu_ids); -- To unsubscribe from this list: send the line "unsubscribe platform-driver-x86" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
