From: jayakumar.acpi@gmail.com An ACPI driver for Atlas boards, including input support. Signed-off-by: Jaya Kumar Cc: "Brown, Len" Cc: Dmitry Torokhov Cc: "Yu, Luming" Signed-off-by: Andrew Morton --- drivers/acpi/Kconfig | 13 ++ drivers/acpi/Makefile | 1 drivers/acpi/atlas_acpi.c | 191 ++++++++++++++++++++++++++++++++++++ 3 files changed, 204 insertions(+), 1 deletion(-) diff -puN /dev/null drivers/acpi/atlas_acpi.c --- /dev/null +++ a/drivers/acpi/atlas_acpi.c @@ -0,0 +1,191 @@ +/* + * atlas_acpi.c - Atlas Wallmount Touchscreen ACPI Extras + * + * Copyright (C) 2006 Jaya Kumar + * Based on Toshiba ACPI by John Belmonte and ASUS ACPI + * This work was sponsored by CIS(M) Sdn Bhd. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * 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 +#include +#include +#include +#include +#include +#include +#include + +#define ACPI_ATLAS_NAME "Atlas ACPI" +#define ACPI_ATLAS_CLASS "Atlas" +#define ACPI_ATLAS_BUTTON_HID "ASIM0000" + +#ifdef CONFIG_INPUT +static struct input_dev *input_dev; + +static void atlas_input_report(u8 address) +{ + int keycode; + + keycode = KEY_F1 + (address & 0x0F); + + if (address & 0x10) + input_report_key(input_dev, keycode, 0); + else + input_report_key(input_dev, keycode, 1); + input_sync(input_dev); +} + +static int atlas_setup_input(void) +{ + int err; + + input_dev = input_allocate_device(); + if (!input_dev) { + printk(KERN_ERR "atlas: insufficient mem to allocate input " + "device\n"); + return -ENOMEM; + } + + input_dev->name = "Atlas ACPI button driver"; + input_dev->phys = "acpi/input0"; + input_dev->id.bustype = BUS_HOST; + input_dev->evbit[LONG(EV_KEY)] = BIT(EV_KEY); + set_bit(KEY_F1, input_dev->keybit); + set_bit(KEY_F2, input_dev->keybit); + set_bit(KEY_F3, input_dev->keybit); + set_bit(KEY_F4, input_dev->keybit); + set_bit(KEY_F5, input_dev->keybit); + set_bit(KEY_F6, input_dev->keybit); + set_bit(KEY_F7, input_dev->keybit); + set_bit(KEY_F8, input_dev->keybit); + set_bit(KEY_F9, input_dev->keybit); + + err = input_register_device(input_dev); + if (err) { + printk(KERN_ERR "atlas: couldn't register input device\n"); + input_free_device(input_dev); + return err; + } + + return 0; +} + +static void atlas_free_input(void) +{ + if (input_dev) + input_unregister_device(input_dev); + +} +#else +#define atlas_free_input(...) +#define atlas_setup_input(...) 0 +#define atlas_input_report(...) +#endif + +/* button handling code */ +static acpi_status acpi_atlas_button_setup(acpi_handle region_handle, + u32 function, void *handler_context, void **return_context) +{ + *return_context = + (function != ACPI_REGION_DEACTIVATE) ? handler_context : NULL; + + return AE_OK; +} + +static acpi_status acpi_atlas_button_handler(u32 function, + acpi_physical_address address, + u32 bit_width, acpi_integer *value, + void *handler_context, void *region_context) +{ + acpi_status status; + struct acpi_device *dev = handler_context; + + if (function == ACPI_WRITE) { + status = acpi_bus_generate_event(dev, 0x80, address); + atlas_input_report((u8) address); + } else { + printk(KERN_WARNING "atlas: shrugged on unexpected function" + ":function=%x,address=%lx,value=%x\n", + function, (unsigned long)address, (u32)*value); + status = -EINVAL; + } + + return status; +} + +static int atlas_acpi_button_add(struct acpi_device *device) +{ + int err; + + err = atlas_setup_input(); + if (err) + return err; + + /* hookup button handler */ + return acpi_install_address_space_handler(device->handle, + 0x81, &acpi_atlas_button_handler, + &acpi_atlas_button_setup, device); +} + +static int atlas_acpi_button_remove(struct acpi_device *device, int type) +{ + acpi_status status; + + status = acpi_remove_address_space_handler(device->handle, + 0x81, &acpi_atlas_button_handler); + if (ACPI_FAILURE(status)) + printk(KERN_ERR "Atlas: Error removing addr spc handler\n"); + atlas_free_input(); + return status; +} + +static struct acpi_driver atlas_acpi_driver = { + .name = ACPI_ATLAS_NAME, + .class = ACPI_ATLAS_CLASS, + .ids = ACPI_ATLAS_BUTTON_HID, + .ops = { + .add = atlas_acpi_button_add, + .remove = atlas_acpi_button_remove, + }, +}; + +static int atlas_acpi_init(void) +{ + int result; + + result = acpi_bus_register_driver(&atlas_acpi_driver); + if (result < 0) { + printk(KERN_ERR "Atlas ACPI: Unable to register driver\n"); + return -ENODEV; + } + + return 0; +} + +static void atlas_acpi_exit(void) +{ + acpi_bus_unregister_driver(&atlas_acpi_driver); +} + +module_init(atlas_acpi_init); +module_exit(atlas_acpi_exit); + +MODULE_AUTHOR("Jaya Kumar"); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("Atlas ACPI"); + diff -puN drivers/acpi/Kconfig~acpi-atlas-acpi-driver drivers/acpi/Kconfig --- a/drivers/acpi/Kconfig~acpi-atlas-acpi-driver +++ a/drivers/acpi/Kconfig @@ -198,7 +198,18 @@ config ACPI_ASUS driver is still under development, so if your laptop is unsupported or something works not quite as expected, please use the mailing list available on the above page (acpi4asus-user@lists.sourceforge.net) - + +config ACPI_ATLAS + tristate "Atlas Wallmount Touchscreen Extras" + depends on X86 + default n + ---help--- + This driver is intended for Atlas wallmounted touchscreens. + The button events will show up in /proc/acpi/events and also + as scancodes F1 through F9, and in X if you use evdev. + + If you have an Atlas wallmounted touchscreen, say Y or M here. + config ACPI_IBM tristate "IBM ThinkPad Laptop Extras" depends on X86 diff -puN drivers/acpi/Makefile~acpi-atlas-acpi-driver drivers/acpi/Makefile --- a/drivers/acpi/Makefile~acpi-atlas-acpi-driver +++ a/drivers/acpi/Makefile @@ -54,6 +54,7 @@ obj-$(CONFIG_ACPI_SYSTEM) += system.o ev obj-$(CONFIG_ACPI_DEBUG) += debug.o obj-$(CONFIG_ACPI_NUMA) += numa.o obj-$(CONFIG_ACPI_ASUS) += asus_acpi.o +obj-$(CONFIG_ACPI_ATLAS) += atlas_acpi.o obj-$(CONFIG_ACPI_IBM) += ibm_acpi.o obj-$(CONFIG_ACPI_TOSHIBA) += toshiba_acpi.o obj-y += scan.o motherboard.o _