+++ /dev/null
-/*
- * 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,
- ¶ms, 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);
projects / GitHub / moto-9609 / android_kernel_motorola_exynos9610.git / commitdiff