staging: pcc_acpi: delete obsolete driver

pcc_acpi is based on an old version
of drivers/misc/panasonic-laptop.c
Signed-off-by: Len Brown <len.brown@intel.com>

drivers/staging/Kconfig

@@ -43,8 +43,6 @@ source "drivers/staging/echo/Kconfig"
 
 source "drivers/staging/at76_usb/Kconfig"
 
-source "drivers/staging/pcc-acpi/Kconfig"
-
 source "drivers/staging/poch/Kconfig"
 
 endif # STAGING

drivers/staging/Makefile

@@ -13,5 +13,4 @@ obj-$(CONFIG_W35UND)		+= winbond/
 obj-$(CONFIG_PRISM2_USB)	+= wlan-ng/
 obj-$(CONFIG_ECHO)		+= echo/
 obj-$(CONFIG_USB_ATMEL)		+= at76_usb/
-obj-$(CONFIG_PCC_ACPI)		+= pcc-acpi/
 obj-$(CONFIG_POCH)		+= poch/

drivers/staging/pcc-acpi/Kconfig

-config PCC_ACPI
-	tristate "Panasonic ACPI Hotkey support"
-	depends on ACPI
-	default n
-	---help---
-	  This driver provides support for Panasonic hotkeys through the
-	  ACPI interface.  This works for the Panasonic R1 (N variant),
-	  R2, R3, T2, W2, and Y2 laptops.
-
-	  To compile this driver as a module, choose M here. The module
-	  will be called pcc-acpi.

drivers/staging/pcc-acpi/Makefile

-obj-$(CONFIG_PCC_ACPI)		+= pcc-acpi.o

drivers/staging/pcc-acpi/TODO

-TODO:
-	- Lindent fixes
-	- checkpatch.pl fixes
-	- verify that the acpi interface is correct
-	- remove /proc dependancy if needed (not sure yet.)
-
-Please send any patches for this driver to Greg Kroah-Hartman <greg@kroah.com>

drivers/staging/pcc-acpi/pcc-acpi.c

-/*
- *  Panasonic HotKey and lcd brightness control Extra driver
- *  (C) 2004 Hiroshi Miura <miura@da-cha.org>
- *  (C) 2004 NTT DATA Intellilink Co. http://www.intellilink.co.jp/
- *  (C) YOKOTA Hiroshi <yokota (at) netlab. is. tsukuba. ac. jp>
- *  (C) 2004 David Bronaugh <dbronaugh>
- *
- *  derived from toshiba_acpi.c, Copyright (C) 2002-2004 John Belmonte
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License version 2 as
- *  publicshed 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
- *
- *---------------------------------------------------------------------------
- *
- * ChangeLog:
- *
- * 	Nov.04, 2006	Hiroshi Miura <miura@da-cha.org>
- * 		-v0.9	remove warning about section reference.
- * 			remove acpi_os_free
- * 			add /proc/acpi/pcc/brightness interface to
- * 			allow HAL to access.
- * 			merge dbronaugh's enhancement
- * 			Aug.17, 2004 David Bronaugh (dbronaugh)
- *  				- Added screen brightness setting interface
- *				  Thanks to the FreeBSD crew
- *				  (acpi_panasonic.c authors)
- * 				  for the ideas I needed to accomplish it
- *
- *	May.29, 2006	Hiroshi Miura <miura@da-cha.org>
- *		-v0.8.4 follow to change keyinput structure
- *			thanks Fabian Yamaguchi <fabs@cs.tu-berlin.de>,
- *			Jacob Bower <jacob.bower@ic.ac.uk> and
- *			Hiroshi Yokota for providing solutions.
- *
- *	Oct.02, 2004	Hiroshi Miura <miura@da-cha.org>
- *		-v0.8.2	merge code of YOKOTA Hiroshi
- *			<yokota@netlab.is.tsukuba.ac.jp>.
- *			Add sticky key mode interface.
- *			Refactoring acpi_pcc_generete_keyinput().
- *
- *	Sep.15, 2004	Hiroshi Miura <miura@da-cha.org>
- *		-v0.8	Generate key input event on input subsystem.
- *			This is based on yet another driver
- *			written by Ryuta Nakanishi.
- *
- *	Sep.10, 2004	Hiroshi Miura <miura@da-cha.org>
- *		-v0.7	Change proc interface functions using seq_file
- *			facility as same as other ACPI drivers.
- *
- *	Aug.28, 2004	Hiroshi Miura <miura@da-cha.org>
- *		-v0.6.4 Fix a silly error with status checking
- *
- *	Aug.25, 2004	Hiroshi Miura <miura@da-cha.org>
- *		-v0.6.3 replace read_acpi_int by standard
- *			function acpi_evaluate_integer
- *			some clean up and make smart copyright notice.
- *			fix return value of pcc_acpi_get_key()
- *			fix checking return value of acpi_bus_register_driver()
- *
- *      Aug.22, 2004    David Bronaugh <dbronaugh@linuxboxen.org>
- *              -v0.6.2 Add check on ACPI data (num_sifr)
- *                      Coding style cleanups, better error messages/handling
- *			Fixed an off-by-one error in memory allocation
- *
- *      Aug.21, 2004    David Bronaugh <dbronaugh@linuxboxen.org>
- *              -v0.6.1 Fix a silly error with status checking
- *
- *      Aug.20, 2004    David Bronaugh <dbronaugh@linuxboxen.org>
- *              - v0.6  Correct brightness controls to reflect reality
- *                      based on information gleaned by Hiroshi Miura
- *                      and discussions with Hiroshi Miura
- *
- *	Aug.10, 2004	Hiroshi Miura <miura@da-cha.org>
- *		- v0.5  support LCD brightness control
- *			based on the disclosed information by MEI.
- *
- *	Jul.25, 2004	Hiroshi Miura <miura@da-cha.org>
- *		- v0.4  first post version
- *		        add function to retrive SIFR
- *
- *	Jul.24, 2004	Hiroshi Miura <miura@da-cha.org>
- *		- v0.3  get proper status of hotkey
- *
- *      Jul.22, 2004	Hiroshi Miura <miura@da-cha.org>
- *		- v0.2  add HotKey handler
- *
- *      Jul.17, 2004	Hiroshi Miura <miura@da-cha.org>
- *		- v0.1  start from toshiba_acpi driver written by John Belmonte
- *
- */
-
-#define ACPI_PCC_VERSION	"0.9+hy"
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/ctype.h>
-#include <linux/init.h>
-#include <linux/input.h>
-#include <linux/proc_fs.h>
-#include <linux/seq_file.h>
-#include <linux/slab.h>
-#include <linux/uaccess.h>
-#include <acpi/acpi_bus.h>
-#include <acpi/acpi_drivers.h>
-
-
-/*************************************************************************
- * "seq" file template definition.
- */
-/* "seq" initializer */
-#define SEQ_OPEN_FS(_open_func_name_, _show_func_name_) \
-static int _open_func_name_(struct inode *inode, struct file *file) \
-{								      \
-	return single_open(file, _show_func_name_, PDE(inode)->data);  \
-}
-
-/*-------------------------------------------------------------------------
- * "seq" fops template for read-only files.
- */
-#define SEQ_FILEOPS_R(_open_func_name_) \
-{ \
-	.open	 = _open_func_name_,		  \
-	.read	 = seq_read,			  \
-	.llseek	 = seq_lseek,			  \
-	.release = single_release,		  \
-}
-
-/*------------------------------------------------------------------------
- * "seq" fops template for read-write files.
- */
-#define SEQ_FILEOPS_RW(_open_func_name_, _write_func_name_) \
-{ \
-	.open	 = _open_func_name_ ,		  \
-	.read	 = seq_read,			  \
-	.write	 = _write_func_name_,		  \
-	.llseek	 = seq_lseek,			  \
-	.release = single_release,		  \
-}
-
-/*
- * "seq" file template definition ended.
- ***************************************************************************
- */
-#ifndef ACPI_HOTKEY_COMPONENT
-#define ACPI_HOTKEY_COMPONENT	0x10000000
-#endif
-
-#define _COMPONENT		ACPI_HOTKEY_COMPONENT
-ACPI_MODULE_NAME("pcc_acpi");
-
-MODULE_AUTHOR("Hiroshi Miura, Hiroshi Yokota");
-MODULE_DESCRIPTION("ACPI HotKey driver for Panasonic Let's Note laptops");
-MODULE_LICENSE("GPL");
-
-#define LOGPREFIX "pcc_acpi: "
-
-/****************************************************
- * Define ACPI PATHs
- ****************************************************/
-/* Lets note hotkeys */
-#define METHOD_HKEY_QUERY	"HINF"
-#define METHOD_HKEY_SQTY	"SQTY"
-#define METHOD_HKEY_SINF	"SINF"
-#define METHOD_HKEY_SSET	"SSET"
-#define HKEY_NOTIFY		 0x80
-
-/* for brightness control */
-#define LCD_MAX_BRIGHTNESS 255
-/* This may be magical -- beware */
-#define LCD_BRIGHTNESS_INCREMENT 17
-/* Registers of SINF */
-#define SINF_LCD_BRIGHTNESS 4
-
-/*******************************************************************
- *
- * definitions for /proc/ interface
- *
- *******************************************************************/
-#define ACPI_PCC_DRIVER_NAME	"pcc_acpi"
-#define ACPI_PCC_DEVICE_NAME	"PCCExtra"
-#define ACPI_PCC_CLASS		"pcc"
-#define PROC_PCC		ACPI_PCC_CLASS
-
-#define ACPI_PCC_INPUT_PHYS	"panasonic/hkey0"
-
-/* This is transitional definition */
-#ifndef KEY_BATT
-# define KEY_BATT 227
-#endif
-
-#define PROC_STR_MAX_LEN  8
-
-#define BUS_PCC_HOTKEY BUS_I8042 /*0x1a*/ /* FIXME: BUS_I8042? */
-
-/* Fn+F4/F5 confricts with Shift+F1/F2  */
-/* This hack avoids key number confrict */
-#define PCC_KEYINPUT_MODE (0)
-
-/* LCD_TYPEs: 0 = Normal, 1 = Semi-transparent
-   ENV_STATEs: Normal temp=0x01, High temp=0x81, N/A=0x00
-*/
-enum SINF_BITS { SINF_NUM_BATTERIES = 0,
-		 SINF_LCD_TYPE,
-		 SINF_AC_MAX_BRIGHT,
-		 SINF_AC_MIN_BRIGHT,
-		 SINF_AC_CUR_BRIGHT,
-			     /* 4 = R1 only handle SINF_AC_CUR_BRIGHT
-			      * as SINF_CUR_BRIGHT and don't know AC state */
-		 SINF_DC_MAX_BRIGHT,
-		 SINF_DC_MIN_BRIGHT,
-		 SINF_DC_CUR_BRIGHT,
-		 SINF_MUTE,
-		 SINF_RESERVED,
-		 SINF_ENV_STATE, /* 10 */
-		 SINF_STICKY_KEY = 0x80,
-};
-
-static struct acpi_device_id pcc_device_ids[] = {
-	{"MAT0012", 0},
-	{"MAT0013", 0},
-	{"MAT0018", 0},
-	{"MAT0019", 0},
-	{"",	    0},
-};
-MODULE_DEVICE_TABLE(acpi, pcc_device_ids);
-
-
-static int __devinit acpi_pcc_hotkey_add(struct acpi_device *device);
-static int __devexit acpi_pcc_hotkey_remove(struct acpi_device *device,
-					    int type);
-static int acpi_pcc_hotkey_resume(struct acpi_device *device);
-
-
-static struct acpi_driver acpi_pcc_driver = {
-	.name =		ACPI_PCC_DRIVER_NAME,
-	.class =	ACPI_PCC_CLASS,
-	.ids =		pcc_device_ids,
-	.ops =		{
-				.add = acpi_pcc_hotkey_add,
-				.remove = __devexit_p(acpi_pcc_hotkey_remove),
-#ifdef CONFIG_PM
-				/*.suspend = acpi_pcc_hotkey_suspend,*/
-				.resume = acpi_pcc_hotkey_resume,
-#endif
-			},
-};
-
-struct acpi_hotkey {
-	acpi_handle		handle;
-	struct acpi_device	*device;
-	struct proc_dir_entry   *proc_dir_entry;
-	unsigned long		num_sifr;
-	unsigned long		status;
-	struct input_dev	*input_dev;
-	int			sticky_mode;
-};
-
-struct pcc_keyinput {
-	struct acpi_hotkey      *hotkey;
-	int key_mode;
-};
-
-/* *************************************************************************
-   Hotkey driver core
-   ************************************************************************* */
-/* -------------------------------------------------------------------------
-   method access functions
-   ------------------------------------------------------------------------- */
-static int acpi_pcc_write_sset(struct acpi_hotkey *hotkey, int func, int val)
-{
-	union acpi_object in_objs[] = {
-		{ .integer.type  = ACPI_TYPE_INTEGER,
-		  .integer.value = func, },
-		{ .integer.type  = ACPI_TYPE_INTEGER,
-		  .integer.value = val, },
-	};
-	struct acpi_object_list params = {
-		.count   = ARRAY_SIZE(in_objs),
-		.pointer = in_objs,
-	};
-	acpi_status status;
-
-	ACPI_FUNCTION_TRACE("acpi_pcc_write_sset");
-
-	status = acpi_evaluate_object(hotkey->handle, METHOD_HKEY_SSET,
-								&params, NULL);
-
-	return_VALUE(status == AE_OK ? AE_OK : AE_ERROR);
-}
-
-static inline int acpi_pcc_get_sqty(struct acpi_device *device)
-{
-	unsigned long s;
-	acpi_status status;
-
-	ACPI_FUNCTION_TRACE("acpi_pcc_get_sqty");
-
-	status = acpi_evaluate_integer(device->handle, METHOD_HKEY_SQTY,
-								NULL, &s);
-	if (ACPI_SUCCESS(status)) {
-		return_VALUE(s);
-	} else {
-		ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
-				  "evaluation error HKEY.SQTY\n"));
-		return_VALUE(-EINVAL);
-	}
-}
-
-static int acpi_pcc_retrieve_biosdata(struct acpi_hotkey *hotkey, u32 *sinf)
-{
-	acpi_status status;
-	struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
-	union acpi_object *hkey = NULL;
-	int i;
-
-	ACPI_FUNCTION_TRACE("acpi_pcc_retrieve_biosdata");
-
-	status = acpi_evaluate_object(hotkey->handle, METHOD_HKEY_SINF, 0,
-				      &buffer);
-	if (ACPI_FAILURE(status)) {
-		ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
-				 "evaluation error HKEY.SINF\n"));
-		status = AE_ERROR;
-		return_VALUE(status);
-	}
-
-	hkey = buffer.pointer;
-	if (!hkey || (hkey->type != ACPI_TYPE_PACKAGE)) {
-		ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Invalid HKEY.SINF\n"));
-		goto free_buffer;
-	}
-
-	if (hotkey->num_sifr < hkey->package.count) {
-		ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
-				 "SQTY reports bad SINF length\n"));
-		status = AE_ERROR;
-		goto free_buffer;
-	}
-
-	for (i = 0; i < hkey->package.count; i++) {
-		union acpi_object *element = &(hkey->package.elements[i]);
-		if (likely(element->type == ACPI_TYPE_INTEGER)) {
-			sinf[i] = element->integer.value;
-		} else {
-			ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
-					 "Invalid HKEY.SINF data\n"));
-			status = AE_ERROR;
-			break;
-		}
-	}
-	sinf[hkey->package.count] = -1;
-
- free_buffer:
-	kfree(buffer.pointer);
-	return_VALUE(status == AE_OK ? AE_OK : AE_ERROR);
-}
-
-static int acpi_pcc_read_sinf_field(struct seq_file *seq, int field)
-{
-	struct acpi_hotkey *hotkey = (struct acpi_hotkey *) seq->private;
-	u32 sinf[hotkey->num_sifr + 1];
-
-	ACPI_FUNCTION_TRACE("acpi_pcc_read_sinf_field");
-
-	if (ACPI_SUCCESS(acpi_pcc_retrieve_biosdata(hotkey, sinf)))
-		seq_printf(seq, "%u\n",	sinf[field]);
-	else
-		ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
-				 "Couldn't retrieve BIOS data\n"));
-
-	return_VALUE(AE_OK);
-}
-
-/* -------------------------------------------------------------------------
-   user interface functions
-   ------------------------------------------------------------------------- */
-/* read methods */
-/* Sinf read methods */
-#define PCC_SINF_READ_F(_name_, FUNC) \
-static int _name_(struct seq_file *seq, void *offset) \
-{ \
-	return_VALUE(ACPI_SUCCESS(acpi_pcc_read_sinf_field(seq,	\
-							  (FUNC))) \
-							  ? 0 : -EINVAL); \
-}
-
-PCC_SINF_READ_F(acpi_pcc_numbatteries_show,	 SINF_NUM_BATTERIES);
-PCC_SINF_READ_F(acpi_pcc_lcdtype_show,		 SINF_LCD_TYPE);
-PCC_SINF_READ_F(acpi_pcc_ac_brightness_max_show, SINF_AC_MAX_BRIGHT);
-PCC_SINF_READ_F(acpi_pcc_ac_brightness_min_show, SINF_AC_MIN_BRIGHT);
-PCC_SINF_READ_F(acpi_pcc_ac_brightness_show,	 SINF_AC_CUR_BRIGHT);
-PCC_SINF_READ_F(acpi_pcc_dc_brightness_max_show, SINF_DC_MAX_BRIGHT);
-PCC_SINF_READ_F(acpi_pcc_dc_brightness_min_show, SINF_DC_MIN_BRIGHT);
-PCC_SINF_READ_F(acpi_pcc_dc_brightness_show,	 SINF_DC_CUR_BRIGHT);
-PCC_SINF_READ_F(acpi_pcc_brightness_show,	 SINF_AC_CUR_BRIGHT);
-PCC_SINF_READ_F(acpi_pcc_mute_show,		 SINF_MUTE);
-
-static int acpi_pcc_sticky_key_show(struct seq_file *seq, void *offset)
-{
-	struct acpi_hotkey *hotkey = seq->private;
-
-	ACPI_FUNCTION_TRACE("acpi_pcc_sticky_key_show");
-
-	if (!hotkey || !hotkey->device)
-		return_VALUE(-EINVAL);
-
-	seq_printf(seq, "%d\n", hotkey->sticky_mode);
-
-	return_VALUE(0);
-}
-
-static int acpi_pcc_keyinput_show(struct seq_file *seq, void *offset)
-{
-	struct acpi_hotkey 	*hotkey = seq->private;
-	struct input_dev 	*hotk_input_dev = hotkey->input_dev;
-	struct pcc_keyinput 	*keyinput = input_get_drvdata(hotk_input_dev);
-
-	ACPI_FUNCTION_TRACE("acpi_pcc_keyinput_show");
-
-	seq_printf(seq, "%d\n", keyinput->key_mode);
-
-	return_VALUE(0);
-}
-
-static int acpi_pcc_version_show(struct seq_file *seq, void *offset)
-{
-	struct acpi_hotkey *hotkey = seq->private;
-
-	ACPI_FUNCTION_TRACE("acpi_pcc_version_show");
-
-	if (!hotkey || !hotkey->device)
-		return_VALUE(-EINVAL);
-
-	seq_printf(seq, "%s version %s\n", ACPI_PCC_DRIVER_NAME,
-		   ACPI_PCC_VERSION);
-	seq_printf(seq, "%li functions\n", hotkey->num_sifr);
-
-	return_VALUE(0);
-}
-
-/* write methods */
-static ssize_t acpi_pcc_write_single_flag(struct file *file,
-					  const char __user *buffer,
-					  size_t count,
-					  int sinf_func)
-{
-	struct seq_file		*seq = file->private_data;
-	struct acpi_hotkey	*hotkey = seq->private;
-	char			write_string[PROC_STR_MAX_LEN];
-	u32			val;
-
-	ACPI_FUNCTION_TRACE("acpi_pcc_write_single_flag");
-
-	if (!hotkey || (count > sizeof(write_string) - 1))
-		return_VALUE(-EINVAL);
-
-	if (copy_from_user(write_string, buffer, count))
-		return_VALUE(-EFAULT);
-
-	write_string[count] = '\0';
-
-	if ((sscanf(write_string, "%3i", &val) == 1) &&
-	    (val == 0 || val == 1))
-		acpi_pcc_write_sset(hotkey, sinf_func, val);
-
-	return_VALUE(count);
-}
-
-static unsigned long acpi_pcc_write_brightness(struct file *file,
-					       const char __user *buffer,
-					       size_t count,
-					       int min_index, int max_index,
-					       int cur_index)
-{
-	struct seq_file		*seq = (struct seq_file *)file->private_data;
-	struct acpi_hotkey	*hotkey = (struct acpi_hotkey *)seq->private;
-	char			write_string[PROC_STR_MAX_LEN];
-	u32 bright;
-	u32 sinf[hotkey->num_sifr + 1];
-
-	ACPI_FUNCTION_TRACE("acpi_pcc_write_brightness");
-
-	if (!hotkey || (count > sizeof(write_string) - 1))
-		return_VALUE(-EINVAL);
-
-	if (copy_from_user(write_string, buffer, count))
-		return_VALUE(-EFAULT);
-
-	write_string[count] = '\0';
-
-	if (ACPI_FAILURE(acpi_pcc_retrieve_biosdata(hotkey, sinf))) {
-		ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
-				 "Couldn't retrieve BIOS data\n"));
-		goto end;
-	}
-
-	if ((sscanf(write_string, "%4i", &bright) == 1) &&
-	    (bright >= sinf[min_index]) &&
-	    (bright <= sinf[max_index]))
-		acpi_pcc_write_sset(hotkey, cur_index, bright);
-
-end:
-	return_VALUE(count);
-}
-
-static ssize_t acpi_pcc_write_ac_brightness(struct file *file,
-					    const char __user *buffer,
-					    size_t count, loff_t *ppos)
-{
-	return_VALUE(acpi_pcc_write_brightness(file, buffer, count,
-					       SINF_AC_MIN_BRIGHT,
-					       SINF_AC_MAX_BRIGHT,
-					       SINF_AC_CUR_BRIGHT));
-}
-
-static ssize_t acpi_pcc_write_dc_brightness(struct file *file,
-					    const char __user *buffer,
-					    size_t count, loff_t *ppos)
-{
-	return_VALUE(acpi_pcc_write_brightness(file, buffer, count,
-					       SINF_DC_MIN_BRIGHT,
-					       SINF_DC_MAX_BRIGHT,
-					       SINF_DC_CUR_BRIGHT));
-}
-
-static ssize_t acpi_pcc_write_no_brightness(struct file *file,
-					    const char __user *buffer,
-					    size_t count, loff_t *ppos)
-{
-	return acpi_pcc_write_brightness(file, buffer, count,
-					 SINF_AC_MIN_BRIGHT,
-					 SINF_AC_MAX_BRIGHT,
-					 SINF_AC_CUR_BRIGHT);
-}
-
-static ssize_t acpi_pcc_write_mute(struct file *file,
-				   const char __user *buffer,
-				   size_t count, loff_t *ppos)
-{
-	return_VALUE(acpi_pcc_write_single_flag(file, buffer, count,
-						SINF_MUTE));
-}
-
-static ssize_t acpi_pcc_write_sticky_key(struct file *file,
-					 const char __user *buffer,
-					 size_t count, loff_t *ppos)
-{
-	struct seq_file     *seq = (struct seq_file *)file->private_data;
-	struct acpi_hotkey  *hotkey = (struct acpi_hotkey *)seq->private;
-	char                 write_string[PROC_STR_MAX_LEN];
-	int                  mode;
-
-	ACPI_FUNCTION_TRACE("acpi_pcc_write_sticky_key");
-
-	if (!hotkey || (count > sizeof(write_string) - 1))
-		return_VALUE(-EINVAL);
-
-	if (copy_from_user(write_string, buffer, count))
-		return_VALUE(-EFAULT);
-
-	write_string[count] = '\0';
-
-	if ((sscanf(write_string, "%3i", &mode) == 1) &&
-	    (mode == 0 || mode == 1)) {
-		acpi_pcc_write_sset(hotkey, SINF_STICKY_KEY, mode);
-		hotkey->sticky_mode = mode;
-	}
-
-	return_VALUE(count);
-}
-
-static ssize_t acpi_pcc_write_keyinput(struct file *file,
-				       const char __user *buffer,
-				       size_t count, loff_t *ppos)
-{
-	struct seq_file		*seq = (struct seq_file *)file->private_data;
-	struct acpi_hotkey	*hotkey = (struct acpi_hotkey *)seq->private;
-	struct pcc_keyinput 	*keyinput;
-	char			write_string[PROC_STR_MAX_LEN];
-	int			key_mode;
-
-	ACPI_FUNCTION_TRACE("acpi_pcc_write_keyinput");
-
-	if (!hotkey || (count > (sizeof(write_string) - 1)))
-		return_VALUE(-EINVAL);
-
-	if (copy_from_user(write_string, buffer, count))
-		return_VALUE(-EFAULT);
-
-	write_string[count] = '\0';
-
-	if ((sscanf(write_string, "%4i", &key_mode) == 1) &&
-	    (key_mode == 0 || key_mode == 1)) {
-		keyinput = input_get_drvdata(hotkey->input_dev);
-		keyinput->key_mode = key_mode;
-	}
-
-	return_VALUE(count);
-}
-
-/* -------------------------------------------------------------------------
-   hotkey driver
-   ------------------------------------------------------------------------- */
-static void acpi_pcc_generete_keyinput(struct acpi_hotkey *hotkey)
-{
-	struct input_dev    *hotk_input_dev = hotkey->input_dev;
-	struct pcc_keyinput *keyinput = input_get_drvdata(hotk_input_dev);
-	int hinf = hotkey->status;
-	int key_code, hkey_num;
-	const int key_map[] = {
-		/*  0 */ -1,
-		/*  1 */ KEY_BRIGHTNESSDOWN,
-		/*  2 */ KEY_BRIGHTNESSUP,
-		/*  3 */ -1, /* vga/lcd switch event is not occur on
-				hotkey driver. */
-		/*  4 */ KEY_MUTE,
-		/*  5 */ KEY_VOLUMEDOWN,
-		/*  6 */ KEY_VOLUMEUP,
-		/*  7 */ KEY_SLEEP,
-		/*  8 */ -1, /* Change CPU boost: do nothing */
-		/*  9 */ KEY_BATT,
-		/* 10 */ KEY_SUSPEND,
-	};
-
-	ACPI_FUNCTION_TRACE("acpi_pcc_generete_keyinput");
-
-	if (keyinput->key_mode == 0)
-		return_VOID;
-
-	hkey_num = hinf & 0xf;
-
-	if ((0 > hkey_num) ||
-	    (hkey_num > ARRAY_SIZE(key_map))) {
-		ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
-				  "hotkey number out of range: %d\n",
-				  hkey_num));
-		return_VOID;
-	}
-
-	key_code = key_map[hkey_num];
-
-	if (key_code != -1) {
-		int pushed = (hinf & 0x80) ? TRUE : FALSE;
-
-		input_report_key(hotk_input_dev, key_code, pushed);
-		input_sync(hotk_input_dev);
-	}
-}
-
-static int acpi_pcc_hotkey_get_key(struct acpi_hotkey *hotkey)
-{
-	unsigned long result;
-	acpi_status status = AE_OK;
-
-	ACPI_FUNCTION_TRACE("acpi_pcc_hotkey_get_key");
-
-	status = acpi_evaluate_integer(hotkey->handle, METHOD_HKEY_QUERY,
-								NULL, &result);
-	if (likely(ACPI_SUCCESS(status)))
-		hotkey->status = result;
-	else
-		ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
-			"error getting hotkey status\n"));
-
-	return_VALUE(status == AE_OK);
-}
-
-void acpi_pcc_hotkey_notify(acpi_handle handle, u32 event, void *data)
-{
-	struct acpi_hotkey *hotkey = (struct acpi_hotkey *) data;
-
-	ACPI_FUNCTION_TRACE("acpi_pcc_hotkey_notify");
-
-	switch (event) {
-	case HKEY_NOTIFY:
-		if (acpi_pcc_hotkey_get_key(hotkey)) {
-			/* generate event like '"pcc HKEY 00000080 00000084"'
-			 * when Fn+F4 pressed */
-			acpi_bus_generate_proc_event(hotkey->device, event,
-								hotkey->status);
-		}
-		acpi_pcc_generete_keyinput(hotkey);
-		break;
-	default:
-		/* nothing to do */
-		break;
-	}
-	return_VOID;
-}
-
-/* *************************************************************************
-   FS Interface (/proc)
-   ************************************************************************* */
-/* oepn proc file fs*/
-SEQ_OPEN_FS(acpi_pcc_dc_brightness_open_fs, acpi_pcc_dc_brightness_show);
-SEQ_OPEN_FS(acpi_pcc_numbatteries_open_fs, acpi_pcc_numbatteries_show);
-SEQ_OPEN_FS(acpi_pcc_lcdtype_open_fs, acpi_pcc_lcdtype_show);
-SEQ_OPEN_FS(acpi_pcc_ac_brightness_max_open_fs,
-	    acpi_pcc_ac_brightness_max_show);
-SEQ_OPEN_FS(acpi_pcc_ac_brightness_min_open_fs,
-	    acpi_pcc_ac_brightness_min_show);
-SEQ_OPEN_FS(acpi_pcc_ac_brightness_open_fs, acpi_pcc_ac_brightness_show);
-SEQ_OPEN_FS(acpi_pcc_dc_brightness_max_open_fs,
-	    acpi_pcc_dc_brightness_max_show);
-SEQ_OPEN_FS(acpi_pcc_dc_brightness_min_open_fs,
-	    acpi_pcc_dc_brightness_min_show);
-SEQ_OPEN_FS(acpi_pcc_brightness_open_fs, acpi_pcc_brightness_show);
-SEQ_OPEN_FS(acpi_pcc_mute_open_fs, acpi_pcc_mute_show);
-SEQ_OPEN_FS(acpi_pcc_version_open_fs, acpi_pcc_version_show);
-SEQ_OPEN_FS(acpi_pcc_keyinput_open_fs, acpi_pcc_keyinput_show);
-SEQ_OPEN_FS(acpi_pcc_sticky_key_open_fs, acpi_pcc_sticky_key_show);
-
-static struct file_operations acpi_pcc_numbatteries_fops =
-	SEQ_FILEOPS_R(acpi_pcc_numbatteries_open_fs);
-static struct file_operations acpi_pcc_lcdtype_fops =
-	SEQ_FILEOPS_R(acpi_pcc_lcdtype_open_fs);
-static struct file_operations acpi_pcc_mute_fops =
-	SEQ_FILEOPS_RW(acpi_pcc_mute_open_fs, acpi_pcc_write_mute);
-static struct file_operations acpi_pcc_ac_brightness_fops =
-	SEQ_FILEOPS_RW(acpi_pcc_ac_brightness_open_fs,
-		       acpi_pcc_write_ac_brightness);
-static struct file_operations acpi_pcc_ac_brightness_max_fops =
-	SEQ_FILEOPS_R(acpi_pcc_ac_brightness_max_open_fs);
-static struct file_operations acpi_pcc_ac_brightness_min_fops =
-	SEQ_FILEOPS_R(acpi_pcc_ac_brightness_min_open_fs);
-static struct file_operations acpi_pcc_dc_brightness_fops =
-	SEQ_FILEOPS_RW(acpi_pcc_dc_brightness_open_fs,
-		       acpi_pcc_write_dc_brightness);
-static struct file_operations acpi_pcc_dc_brightness_max_fops =
-	SEQ_FILEOPS_R(acpi_pcc_dc_brightness_max_open_fs);
-static struct file_operations acpi_pcc_dc_brightness_min_fops =
-	SEQ_FILEOPS_R(acpi_pcc_dc_brightness_min_open_fs);
-static struct file_operations acpi_pcc_brightness_fops =
-	SEQ_FILEOPS_RW(acpi_pcc_brightness_open_fs,
-		       acpi_pcc_write_no_brightness);
-static struct file_operations acpi_pcc_sticky_key_fops =
-	SEQ_FILEOPS_RW(acpi_pcc_sticky_key_open_fs, acpi_pcc_write_sticky_key);
-static struct file_operations acpi_pcc_keyinput_fops =
-	SEQ_FILEOPS_RW(acpi_pcc_keyinput_open_fs, acpi_pcc_write_keyinput);
-static struct file_operations acpi_pcc_version_fops =
-	SEQ_FILEOPS_R(acpi_pcc_version_open_fs);
-
-struct proc_item {
-	const char *name;
-	struct file_operations *fops;
-	mode_t flag;
-};
-
-/* Note: These functions map *exactly* to the SINF/SSET functions */
-struct proc_item acpi_pcc_proc_items_sifr[] = {
-	{ "num_batteries", &acpi_pcc_numbatteries_fops, S_IRUGO },
-	{ "lcd_type", &acpi_pcc_lcdtype_fops, S_IRUGO },
-	{ "ac_brightness_max", &acpi_pcc_ac_brightness_max_fops, S_IRUGO },
-	{ "ac_brightness_min", &acpi_pcc_ac_brightness_min_fops, S_IRUGO },
-	{ "ac_brightness", &acpi_pcc_ac_brightness_fops,
-		S_IFREG | S_IRUGO | S_IWUSR },
-	{ "dc_brightness_max", &acpi_pcc_dc_brightness_max_fops, S_IRUGO },
-	{ "dc_brightness_min", &acpi_pcc_dc_brightness_min_fops, S_IRUGO },
-	{ "dc_brightness", &acpi_pcc_dc_brightness_fops,
-		S_IFREG | S_IRUGO | S_IWUSR },
-	{ "brightness", &acpi_pcc_brightness_fops, S_IFREG | S_IRUGO | S_IWUSR},
-	{ "mute", &acpi_pcc_mute_fops, S_IFREG | S_IRUGO | S_IWUSR },
-	{ NULL, NULL, 0 },
-};
-
-struct proc_item acpi_pcc_proc_items[] = {
-	{ "sticky_key", &acpi_pcc_sticky_key_fops, S_IFREG | S_IRUGO | S_IWUSR},
-	{ "keyinput", &acpi_pcc_keyinput_fops, S_IFREG | S_IRUGO | S_IWUSR },
-	{ "version", &acpi_pcc_version_fops, S_IRUGO },
-	{ NULL, NULL, 0 },
-};
-
-static int __devinit acpi_pcc_add_device(struct acpi_device *device,
-					 struct proc_item *proc_items,
-					 int num)
-{
-	struct acpi_hotkey *hotkey = acpi_driver_data(device);
-	struct proc_dir_entry *proc;
-	struct proc_item *item;
-	int i;
-
-	for (item = proc_items, i = 0; item->name && i < num; ++item, ++i) {
-		proc = create_proc_entry(item->name, item->flag,
-					 hotkey->proc_dir_entry);
-		if (likely(proc)) {
-			proc->proc_fops = item->fops;
-			proc->data = hotkey;
-			proc->owner = THIS_MODULE;
-		} else {
-			while (i-- > 0) {
-				item--;
-				remove_proc_entry(item->name,
-					hotkey->proc_dir_entry);
-			}
-			return_VALUE(-ENODEV);
-		}
-	}
-	return_VALUE(0);
-}
-
-static int __devinit acpi_pcc_proc_init(struct acpi_device *device)
-{
-	struct proc_dir_entry *acpi_pcc_dir;
-	struct acpi_hotkey    *hotkey = acpi_driver_data(device);
-	acpi_status status;
-
-	ACPI_FUNCTION_TRACE("acpi_pcc_proc_init");
-
-	acpi_pcc_dir = proc_mkdir(PROC_PCC, acpi_root_dir);
-
-	if (unlikely(!acpi_pcc_dir)) {
-		ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
-				 "Couldn't create dir in /proc\n"));
-		return_VALUE(-ENODEV);
-	}
-
-	acpi_pcc_dir->owner = THIS_MODULE;
-	hotkey->proc_dir_entry = acpi_pcc_dir;
-
-	status =  acpi_pcc_add_device(device, acpi_pcc_proc_items_sifr,
-				      hotkey->num_sifr);
-	status |= acpi_pcc_add_device(device, acpi_pcc_proc_items,
-				      ARRAY_SIZE(acpi_pcc_proc_items));
-	if (unlikely(status)) {
-		remove_proc_entry(PROC_PCC, acpi_root_dir);
-		hotkey->proc_dir_entry = NULL;
-		return_VALUE(-ENODEV);
-	}
-
-	return_VALUE(status);
-}
-
-static void __devexit acpi_pcc_remove_device(struct acpi_device *device,
-					     struct proc_item *proc_items,
-					     int num)
-{
-	struct acpi_hotkey *hotkey = acpi_driver_data(device);
-	struct proc_item *item;
-	int i;
-
-	for (item = proc_items, i = 0;
-	     item->name != NULL && i < num;
-	     ++item, ++i) {
-		remove_proc_entry(item->name, hotkey->proc_dir_entry);
-	}
-
-	return_VOID;
-}
-
-/* *************************************************************************
-   Power Management
-   ************************************************************************* */
-#ifdef CONFIG_PM
-static int acpi_pcc_hotkey_resume(struct acpi_device *device)
-{
-	struct acpi_hotkey *hotkey = acpi_driver_data(device);
-	acpi_status	    status = AE_OK;
-
-	ACPI_FUNCTION_TRACE("acpi_pcc_hotkey_resume");
-
-	if (device == NULL || hotkey == NULL)
-		return_VALUE(-EINVAL);
-
-	if (hotkey->num_sifr != 0) {
-		ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Sticky mode restore: %d\n",
-				 hotkey->sticky_mode));
-
-		status = acpi_pcc_write_sset(hotkey, SINF_STICKY_KEY,
-					     hotkey->sticky_mode);
-	}
-	if (status != AE_OK)
-		return_VALUE(-EINVAL);
-
-	return_VALUE(0);
-}
-#endif
-
-/* *************************************************************************
-   Module init/remove
-   ************************************************************************* */
-/* -------------------------------------------------------------------------
-   input
-   ------------------------------------------------------------------------- */
-static int __devinit acpi_pcc_init_input(struct acpi_hotkey *hotkey)
-{
-	struct input_dev    *hotk_input_dev;
-	struct pcc_keyinput *pcc_keyinput;
-	int error;
-
-	ACPI_FUNCTION_TRACE("acpi_pcc_init_input");
-
-	hotk_input_dev = input_allocate_device();
-	if (hotk_input_dev == NULL) {
-		ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
-				 "Couldn't allocate input device for hotkey"));
-		goto err_input;
-	}
-
-	pcc_keyinput = kcalloc(1, sizeof(struct pcc_keyinput), GFP_KERNEL);
-
-	if (pcc_keyinput == NULL) {
-		ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
-				 "Couldn't allocate mem for private data"));
-		goto err_pcc;
-	}
-
-	hotk_input_dev->evbit[0] = BIT(EV_KEY);
-
-	set_bit(KEY_BRIGHTNESSDOWN, hotk_input_dev->keybit);
-	set_bit(KEY_BRIGHTNESSUP,   hotk_input_dev->keybit);
-	set_bit(KEY_MUTE,	    hotk_input_dev->keybit);
-	set_bit(KEY_VOLUMEDOWN,	    hotk_input_dev->keybit);
-	set_bit(KEY_VOLUMEUP,	    hotk_input_dev->keybit);
-	set_bit(KEY_SLEEP,	    hotk_input_dev->keybit);
-	set_bit(KEY_BATT,	    hotk_input_dev->keybit);
-	set_bit(KEY_SUSPEND,	    hotk_input_dev->keybit);
-
-	hotk_input_dev->name       = ACPI_PCC_DRIVER_NAME;
-	hotk_input_dev->phys       = ACPI_PCC_INPUT_PHYS;
-	hotk_input_dev->id.bustype = BUS_PCC_HOTKEY;
-	hotk_input_dev->id.vendor  = 0x0001;
-	hotk_input_dev->id.product = 0x0001;
-	hotk_input_dev->id.version = 0x0100;
-
-	pcc_keyinput->key_mode = PCC_KEYINPUT_MODE;
-	pcc_keyinput->hotkey   = hotkey;
-
-	input_set_drvdata(hotk_input_dev, pcc_keyinput);
-
-	hotkey->input_dev = hotk_input_dev;
-
-	error = input_register_device(hotk_input_dev);
-
-	if (error)
-		goto err_pcc;
-
-	return_VALUE(0);
-
- err_pcc:
-	input_unregister_device(hotk_input_dev);
- err_input:
-	return_VALUE(-ENOMEM);
-}
-
-static void __devexit acpi_pcc_remove_input(struct acpi_hotkey *hotkey)
-{
-	struct input_dev    *hotk_input_dev;
-	struct pcc_keyinput *pcc_keyinput;
-
-	ACPI_FUNCTION_TRACE("acpi_pcc_remove_input");
-
-	if (hotkey == NULL) {
-		ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Can't free memory"));
-		return_VOID;
-	}
-
-	hotk_input_dev = hotkey->input_dev;
-	pcc_keyinput   = input_get_drvdata(hotk_input_dev);
-
-	input_unregister_device(hotk_input_dev);
-
-	kfree(pcc_keyinput);
-}
-
-/* -------------------------------------------------------------------------
-   ACPI
-   ------------------------------------------------------------------------- */
-static int __devinit acpi_pcc_hotkey_add(struct acpi_device *device)
-{
-	acpi_status		status = AE_OK;
-	struct acpi_hotkey	*hotkey = NULL;
-	int sifr_status, num_sifr, result;
-
-	ACPI_FUNCTION_TRACE("acpi_pcc_hotkey_add");
-
-	if (device == NULL)
-		return_VALUE(-EINVAL);
-
-	sifr_status = acpi_pcc_get_sqty(device);
-
-	if (sifr_status > 255) {
-		ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "num_sifr too large"));
-		return_VALUE(-ENODEV);
-	}
-
-	if (sifr_status < 0) {
-		ACPI_DEBUG_PRINT((ACPI_DB_INFO, "not support SQTY"));
-		num_sifr = 0;
-	} else {
-		num_sifr = sifr_status;
-	}
-
-	hotkey = kcalloc(1, sizeof(struct acpi_hotkey), GFP_KERNEL);
-	if (hotkey == NULL) {
-		ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
-				 "Couldn't allocate mem for hotkey"));
-		return_VALUE(-ENOMEM);
-	}
-
-	hotkey->device   = device;
-	hotkey->handle   = device->handle;
-	hotkey->num_sifr = num_sifr;
-	device->driver_data = hotkey;
-	strcpy(acpi_device_name(device),  ACPI_PCC_DEVICE_NAME);
-	strcpy(acpi_device_class(device), ACPI_PCC_CLASS);
-
-	status = acpi_install_notify_handler(hotkey->handle,
-					     ACPI_DEVICE_NOTIFY,
-					     acpi_pcc_hotkey_notify,
-					     hotkey);
-
-	if (ACPI_FAILURE(status)) {
-		ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
-				 "Error installing notify handler\n"));
-		kfree(hotkey);
-		return_VALUE(-ENODEV);
-	}
-
-	result = acpi_pcc_init_input(hotkey);
-	if (result != 0) {
-		ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
-				 "Error installing keyinput handler\n"));
-		kfree(hotkey);
-		return_VALUE(result);
-	}
-
-	return_VALUE(acpi_pcc_proc_init(device));
-}
-
-static int __devexit acpi_pcc_hotkey_remove(struct acpi_device *device,
-					    int type)
-{
-	acpi_status		status = AE_OK;
-	struct acpi_hotkey	*hotkey = acpi_driver_data(device);
-
-	ACPI_FUNCTION_TRACE("acpi_pcc_hotkey_remove");
-
-	if (!device || !hotkey)
-		return_VALUE(-EINVAL);
-
-	if (hotkey->proc_dir_entry) {
-		acpi_pcc_remove_device(device, acpi_pcc_proc_items_sifr,
-				       hotkey->num_sifr);
-		acpi_pcc_remove_device(device, acpi_pcc_proc_items,
-				       ARRAY_SIZE(acpi_pcc_proc_items));
-		remove_proc_entry(PROC_PCC, acpi_root_dir);
-	}
-
-	status = acpi_remove_notify_handler(hotkey->handle,
-		    ACPI_DEVICE_NOTIFY, acpi_pcc_hotkey_notify);
-
-	if (ACPI_FAILURE(status)) {
-		ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
-				 "Error removing notify handler\n"));
-	}
-
-	acpi_pcc_remove_input(hotkey);
-	kfree(hotkey);
-	return_VALUE(status == AE_OK);
-}
-
-/* *********************************************************************
-   Module entry point
-   ********************************************************************* */
-static int __init acpi_pcc_init(void)
-{
-	int result;
-
-	ACPI_FUNCTION_TRACE("acpi_pcc_init");
-
-	printk(KERN_INFO LOGPREFIX "loading...\n");
-
-	if (acpi_disabled) {
-		printk(KERN_INFO LOGPREFIX "ACPI disabled.\n");
-		return_VALUE(-ENODEV);
-	}
-
-	result = acpi_bus_register_driver(&acpi_pcc_driver);
-	if (result < 0) {
-		ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
-				 "Error registering hotkey driver\n"));
-		return_VALUE(-ENODEV);
-	}
-
-	return_VALUE(result);
-}
-
-static void __exit acpi_pcc_exit(void)
-{
-	ACPI_FUNCTION_TRACE("acpi_pcc_exit");
-
-	printk(KERN_INFO LOGPREFIX "unloading...\n");
-
-	acpi_bus_unregister_driver(&acpi_pcc_driver);
-
-	return_VOID;
-}
-
-module_init(acpi_pcc_init);
-module_exit(acpi_pcc_exit);