From: jayakumar.acpi@xxxxxxxxx
An ACPI driver for Atlas boards, including input support.
Signed-off-by: Jaya Kumar <jayakumar.acpi@xxxxxxxxx>
Cc: "Brown, Len" <len.brown@xxxxxxxxx>
Cc: Dmitry Torokhov <dtor_core@xxxxxxxxxxxxx>
Cc: "Yu, Luming" <luming.yu@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
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 <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/input.h>
+#include <linux/types.h>
+#include <linux/proc_fs.h>
+#include <asm/uaccess.h>
+#include <acpi/acpi_drivers.h>
+
+#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@xxxxxxxxxxxxxxxxxxxxx)
-
+
+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
_
-
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