Re: [patch 02/14] ACPI: Atlas ACPI driver

[Len Brown <len.brown@intel.com>]

Andrew,
Please delete this patch from MM -- it is stale.
Jaya, please send Andrew the newer patch that replaces it -- the one
that doesn't touch drivers/acpi.

thanks,
-Len

On Tuesday 15 August 2006 01:37, akpm@osdl.org wrote:
> From: Jaya Kumar <jayakumar.acpi@gmail.com>
> 
> An ACPI driver for Atlas boards, including input support.
> 
> Signed-off-by: Jaya Kumar <jayakumar.acpi@gmail.com>
> Cc: "Brown, Len" <len.brown@intel.com>
> Cc: Dmitry Torokhov <dtor_core@ameritech.net>
> Cc: "Yu, Luming" <luming.yu@intel.com>
> Signed-off-by: Andrew Morton <akpm@osdl.org>
> ---
> 
>  drivers/acpi/Kconfig      |   13 ++
>  drivers/acpi/Makefile     |    1 
>  drivers/acpi/atlas_acpi.c |  181 ++++++++++++++++++++++++++++++++++++
>  3 files changed, 194 insertions(+), 1 deletion(-)
> 
> diff -puN drivers/acpi/Kconfig~acpi-atlas-acpi-driver drivers/acpi/Kconfig
> --- a/drivers/acpi/Kconfig~acpi-atlas-acpi-driver
> +++ a/drivers/acpi/Kconfig
> @@ -196,7 +196,18 @@ 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 && INPUT
> +	default n
> +         ---help---
> +          This driver is intended for Atlas wallmounted touchscreens.
> +          The button events will show up as scancodes F1 through F9 via
> +          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
> diff -puN /dev/null drivers/acpi/atlas_acpi.c
> --- /dev/null
> +++ a/drivers/acpi/atlas_acpi.c
> @@ -0,0 +1,181 @@
> +/*
> + *  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 <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"
> +
> +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 = "ASIM0000/atlas/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);
> +}
> +
> +/* 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;
> +
> +	if (function == ACPI_WRITE)
> +		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");
> +
> _
> -
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