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1041 lines
26 KiB
1041 lines
26 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Panasonic HotKey and LCD brightness control driver |
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* (C) 2004 Hiroshi Miura <[email protected]> |
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* (C) 2004 NTT DATA Intellilink Co. http://www.intellilink.co.jp/ |
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* (C) YOKOTA Hiroshi <yokota (at) netlab. is. tsukuba. ac. jp> |
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* (C) 2004 David Bronaugh <dbronaugh> |
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* (C) 2006-2008 Harald Welte <[email protected]> |
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* |
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* derived from toshiba_acpi.c, Copyright (C) 2002-2004 John Belmonte |
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* |
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*--------------------------------------------------------------------------- |
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* |
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* ChangeLog: |
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* Aug.18, 2020 Kenneth Chan <[email protected]> |
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* -v0.98 add platform devices for firmware brightness registers |
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* add support for battery charging threshold (eco mode) |
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* resolve hotkey double trigger |
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* add write support to mute |
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* fix sticky_key init bug |
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* fix naming of platform files for consistency with other |
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* modules |
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* split MODULE_AUTHOR() by one author per macro call |
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* replace ACPI prints with pr_*() macros |
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* -v0.97 add support for cdpower hardware switch |
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* -v0.96 merge Lucina's enhancement |
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* Jan.13, 2009 Martin Lucina <[email protected]> |
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* - add support for optical driver power in |
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* Y and W series |
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* |
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* Sep.23, 2008 Harald Welte <[email protected]> |
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* -v0.95 rename driver from drivers/acpi/pcc_acpi.c to |
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* drivers/misc/panasonic-laptop.c |
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* |
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* Jul.04, 2008 Harald Welte <[email protected]> |
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* -v0.94 replace /proc interface with device attributes |
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* support {set,get}keycode on th input device |
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* |
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* Jun.27, 2008 Harald Welte <[email protected]> |
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* -v0.92 merge with 2.6.26-rc6 input API changes |
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* remove broken <= 2.6.15 kernel support |
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* resolve all compiler warnings |
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* various coding style fixes (checkpatch.pl) |
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* add support for backlight api |
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* major code restructuring |
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* |
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* Dac.28, 2007 Harald Welte <[email protected]> |
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* -v0.91 merge with 2.6.24-rc6 ACPI changes |
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* |
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* Nov.04, 2006 Hiroshi Miura <[email protected]> |
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* -v0.9 remove warning about section reference. |
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* remove acpi_os_free |
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* add /proc/acpi/pcc/brightness interface for HAL access |
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* merge dbronaugh's enhancement |
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* Aug.17, 2004 David Bronaugh (dbronaugh) |
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* - Added screen brightness setting interface |
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* Thanks to FreeBSD crew (acpi_panasonic.c) |
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* for the ideas I needed to accomplish it |
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* |
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* May.29, 2006 Hiroshi Miura <[email protected]> |
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* -v0.8.4 follow to change keyinput structure |
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* thanks Fabian Yamaguchi <[email protected]>, |
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* Jacob Bower <[email protected]> and |
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* Hiroshi Yokota for providing solutions. |
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* |
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* Oct.02, 2004 Hiroshi Miura <[email protected]> |
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* -v0.8.2 merge code of YOKOTA Hiroshi |
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* <[email protected]>. |
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* Add sticky key mode interface. |
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* Refactoring acpi_pcc_generate_keyinput(). |
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* |
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* Sep.15, 2004 Hiroshi Miura <[email protected]> |
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* -v0.8 Generate key input event on input subsystem. |
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* This is based on yet another driver written by |
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* Ryuta Nakanishi. |
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* |
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* Sep.10, 2004 Hiroshi Miura <[email protected]> |
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* -v0.7 Change proc interface functions using seq_file |
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* facility as same as other ACPI drivers. |
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* |
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* Aug.28, 2004 Hiroshi Miura <[email protected]> |
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* -v0.6.4 Fix a silly error with status checking |
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* |
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* Aug.25, 2004 Hiroshi Miura <[email protected]> |
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* -v0.6.3 replace read_acpi_int by standard function |
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* acpi_evaluate_integer |
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* some clean up and make smart copyright notice. |
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* fix return value of pcc_acpi_get_key() |
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* fix checking return value of acpi_bus_register_driver() |
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* |
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* Aug.22, 2004 David Bronaugh <[email protected]> |
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* -v0.6.2 Add check on ACPI data (num_sifr) |
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* Coding style cleanups, better error messages/handling |
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* Fixed an off-by-one error in memory allocation |
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* |
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* Aug.21, 2004 David Bronaugh <[email protected]> |
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* -v0.6.1 Fix a silly error with status checking |
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* |
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* Aug.20, 2004 David Bronaugh <[email protected]> |
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* - v0.6 Correct brightness controls to reflect reality |
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* based on information gleaned by Hiroshi Miura |
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* and discussions with Hiroshi Miura |
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* |
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* Aug.10, 2004 Hiroshi Miura <[email protected]> |
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* - v0.5 support LCD brightness control |
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* based on the disclosed information by MEI. |
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* |
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* Jul.25, 2004 Hiroshi Miura <[email protected]> |
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* - v0.4 first post version |
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* add function to retrive SIFR |
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* |
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* Jul.24, 2004 Hiroshi Miura <[email protected]> |
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* - v0.3 get proper status of hotkey |
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* |
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* Jul.22, 2004 Hiroshi Miura <[email protected]> |
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* - v0.2 add HotKey handler |
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* |
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* Jul.17, 2004 Hiroshi Miura <[email protected]> |
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* - v0.1 start from toshiba_acpi driver written by John Belmonte |
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*/ |
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|
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#include <linux/kernel.h> |
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#include <linux/module.h> |
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#include <linux/init.h> |
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#include <linux/types.h> |
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#include <linux/backlight.h> |
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#include <linux/ctype.h> |
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#include <linux/seq_file.h> |
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#include <linux/uaccess.h> |
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#include <linux/slab.h> |
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#include <linux/acpi.h> |
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#include <linux/input.h> |
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#include <linux/input/sparse-keymap.h> |
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#include <linux/platform_device.h> |
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|
|
|
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MODULE_AUTHOR("Hiroshi Miura <[email protected]>"); |
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MODULE_AUTHOR("David Bronaugh <[email protected]>"); |
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MODULE_AUTHOR("Harald Welte <[email protected]>"); |
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MODULE_AUTHOR("Martin Lucina <[email protected]>"); |
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MODULE_AUTHOR("Kenneth Chan <[email protected]>"); |
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MODULE_DESCRIPTION("ACPI HotKey driver for Panasonic Let's Note laptops"); |
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MODULE_LICENSE("GPL"); |
|
|
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#define LOGPREFIX "pcc_acpi: " |
|
|
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/* Define ACPI PATHs */ |
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/* Lets note hotkeys */ |
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#define METHOD_HKEY_QUERY "HINF" |
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#define METHOD_HKEY_SQTY "SQTY" |
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#define METHOD_HKEY_SINF "SINF" |
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#define METHOD_HKEY_SSET "SSET" |
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#define METHOD_ECWR "\\_SB.ECWR" |
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#define HKEY_NOTIFY 0x80 |
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#define ECO_MODE_OFF 0x00 |
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#define ECO_MODE_ON 0x80 |
|
|
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#define ACPI_PCC_DRIVER_NAME "Panasonic Laptop Support" |
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#define ACPI_PCC_DEVICE_NAME "Hotkey" |
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#define ACPI_PCC_CLASS "pcc" |
|
|
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#define ACPI_PCC_INPUT_PHYS "panasonic/hkey0" |
|
|
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/* LCD_TYPEs: 0 = Normal, 1 = Semi-transparent |
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ECO_MODEs: 0x03 = off, 0x83 = on |
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*/ |
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enum SINF_BITS { SINF_NUM_BATTERIES = 0, |
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SINF_LCD_TYPE, |
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SINF_AC_MAX_BRIGHT, |
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SINF_AC_MIN_BRIGHT, |
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SINF_AC_CUR_BRIGHT, |
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SINF_DC_MAX_BRIGHT, |
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SINF_DC_MIN_BRIGHT, |
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SINF_DC_CUR_BRIGHT, |
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SINF_MUTE, |
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SINF_RESERVED, |
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SINF_ECO_MODE = 0x0A, |
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SINF_CUR_BRIGHT = 0x0D, |
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SINF_STICKY_KEY = 0x80, |
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}; |
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/* R1 handles SINF_AC_CUR_BRIGHT as SINF_CUR_BRIGHT, doesn't know AC state */ |
|
|
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static int acpi_pcc_hotkey_add(struct acpi_device *device); |
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static int acpi_pcc_hotkey_remove(struct acpi_device *device); |
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static void acpi_pcc_hotkey_notify(struct acpi_device *device, u32 event); |
|
|
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static const struct acpi_device_id pcc_device_ids[] = { |
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{ "MAT0012", 0}, |
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{ "MAT0013", 0}, |
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{ "MAT0018", 0}, |
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{ "MAT0019", 0}, |
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{ "", 0}, |
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}; |
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MODULE_DEVICE_TABLE(acpi, pcc_device_ids); |
|
|
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#ifdef CONFIG_PM_SLEEP |
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static int acpi_pcc_hotkey_resume(struct device *dev); |
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#endif |
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static SIMPLE_DEV_PM_OPS(acpi_pcc_hotkey_pm, NULL, acpi_pcc_hotkey_resume); |
|
|
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static struct acpi_driver acpi_pcc_driver = { |
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.name = ACPI_PCC_DRIVER_NAME, |
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.class = ACPI_PCC_CLASS, |
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.ids = pcc_device_ids, |
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.ops = { |
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.add = acpi_pcc_hotkey_add, |
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.remove = acpi_pcc_hotkey_remove, |
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.notify = acpi_pcc_hotkey_notify, |
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}, |
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.drv.pm = &acpi_pcc_hotkey_pm, |
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}; |
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|
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static const struct key_entry panasonic_keymap[] = { |
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{ KE_KEY, 0, { KEY_RESERVED } }, |
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{ KE_KEY, 1, { KEY_BRIGHTNESSDOWN } }, |
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{ KE_KEY, 2, { KEY_BRIGHTNESSUP } }, |
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{ KE_KEY, 3, { KEY_DISPLAYTOGGLE } }, |
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{ KE_KEY, 4, { KEY_MUTE } }, |
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{ KE_KEY, 5, { KEY_VOLUMEDOWN } }, |
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{ KE_KEY, 6, { KEY_VOLUMEUP } }, |
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{ KE_KEY, 7, { KEY_SLEEP } }, |
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{ KE_KEY, 8, { KEY_PROG1 } }, /* Change CPU boost */ |
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{ KE_KEY, 9, { KEY_BATTERY } }, |
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{ KE_KEY, 10, { KEY_SUSPEND } }, |
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{ KE_END, 0 } |
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}; |
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|
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struct pcc_acpi { |
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acpi_handle handle; |
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unsigned long num_sifr; |
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int sticky_key; |
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int eco_mode; |
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int mute; |
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int ac_brightness; |
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int dc_brightness; |
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int current_brightness; |
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u32 *sinf; |
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struct acpi_device *device; |
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struct input_dev *input_dev; |
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struct backlight_device *backlight; |
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struct platform_device *platform; |
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}; |
|
|
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/* method access functions */ |
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static int acpi_pcc_write_sset(struct pcc_acpi *pcc, int func, int val) |
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{ |
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union acpi_object in_objs[] = { |
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{ .integer.type = ACPI_TYPE_INTEGER, |
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.integer.value = func, }, |
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{ .integer.type = ACPI_TYPE_INTEGER, |
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.integer.value = val, }, |
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}; |
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struct acpi_object_list params = { |
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.count = ARRAY_SIZE(in_objs), |
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.pointer = in_objs, |
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}; |
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acpi_status status = AE_OK; |
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|
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status = acpi_evaluate_object(pcc->handle, METHOD_HKEY_SSET, |
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¶ms, NULL); |
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|
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return (status == AE_OK) ? 0 : -EIO; |
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} |
|
|
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static inline int acpi_pcc_get_sqty(struct acpi_device *device) |
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{ |
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unsigned long long s; |
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acpi_status status; |
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|
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status = acpi_evaluate_integer(device->handle, METHOD_HKEY_SQTY, |
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NULL, &s); |
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if (ACPI_SUCCESS(status)) |
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return s; |
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else { |
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pr_err("evaluation error HKEY.SQTY\n"); |
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return -EINVAL; |
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} |
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} |
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|
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static int acpi_pcc_retrieve_biosdata(struct pcc_acpi *pcc) |
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{ |
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acpi_status status; |
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struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL}; |
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union acpi_object *hkey = NULL; |
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int i; |
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|
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status = acpi_evaluate_object(pcc->handle, METHOD_HKEY_SINF, NULL, |
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&buffer); |
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if (ACPI_FAILURE(status)) { |
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pr_err("evaluation error HKEY.SINF\n"); |
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return 0; |
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} |
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|
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hkey = buffer.pointer; |
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if (!hkey || (hkey->type != ACPI_TYPE_PACKAGE)) { |
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pr_err("Invalid HKEY.SINF\n"); |
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status = AE_ERROR; |
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goto end; |
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} |
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|
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if (pcc->num_sifr < hkey->package.count) { |
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pr_err("SQTY reports bad SINF length\n"); |
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status = AE_ERROR; |
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goto end; |
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} |
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|
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for (i = 0; i < hkey->package.count; i++) { |
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union acpi_object *element = &(hkey->package.elements[i]); |
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if (likely(element->type == ACPI_TYPE_INTEGER)) { |
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pcc->sinf[i] = element->integer.value; |
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} else |
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pr_err("Invalid HKEY.SINF data\n"); |
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} |
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pcc->sinf[hkey->package.count] = -1; |
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|
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end: |
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kfree(buffer.pointer); |
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return status == AE_OK; |
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} |
|
|
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/* backlight API interface functions */ |
|
|
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/* This driver currently treats AC and DC brightness identical, |
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* since we don't need to invent an interface to the core ACPI |
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* logic to receive events in case a power supply is plugged in |
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* or removed */ |
|
|
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static int bl_get(struct backlight_device *bd) |
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{ |
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struct pcc_acpi *pcc = bl_get_data(bd); |
|
|
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if (!acpi_pcc_retrieve_biosdata(pcc)) |
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return -EIO; |
|
|
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return pcc->sinf[SINF_AC_CUR_BRIGHT]; |
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} |
|
|
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static int bl_set_status(struct backlight_device *bd) |
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{ |
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struct pcc_acpi *pcc = bl_get_data(bd); |
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int bright = bd->props.brightness; |
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int rc; |
|
|
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if (!acpi_pcc_retrieve_biosdata(pcc)) |
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return -EIO; |
|
|
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if (bright < pcc->sinf[SINF_AC_MIN_BRIGHT]) |
|
bright = pcc->sinf[SINF_AC_MIN_BRIGHT]; |
|
|
|
if (bright < pcc->sinf[SINF_DC_MIN_BRIGHT]) |
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bright = pcc->sinf[SINF_DC_MIN_BRIGHT]; |
|
|
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if (bright < pcc->sinf[SINF_AC_MIN_BRIGHT] || |
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bright > pcc->sinf[SINF_AC_MAX_BRIGHT]) |
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return -EINVAL; |
|
|
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rc = acpi_pcc_write_sset(pcc, SINF_AC_CUR_BRIGHT, bright); |
|
if (rc < 0) |
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return rc; |
|
|
|
return acpi_pcc_write_sset(pcc, SINF_DC_CUR_BRIGHT, bright); |
|
} |
|
|
|
static const struct backlight_ops pcc_backlight_ops = { |
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.get_brightness = bl_get, |
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.update_status = bl_set_status, |
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}; |
|
|
|
|
|
/* returns ACPI_SUCCESS if methods to control optical drive are present */ |
|
|
|
static acpi_status check_optd_present(void) |
|
{ |
|
acpi_status status = AE_OK; |
|
acpi_handle handle; |
|
|
|
status = acpi_get_handle(NULL, "\\_SB.STAT", &handle); |
|
if (ACPI_FAILURE(status)) |
|
goto out; |
|
status = acpi_get_handle(NULL, "\\_SB.FBAY", &handle); |
|
if (ACPI_FAILURE(status)) |
|
goto out; |
|
status = acpi_get_handle(NULL, "\\_SB.CDDI", &handle); |
|
if (ACPI_FAILURE(status)) |
|
goto out; |
|
|
|
out: |
|
return status; |
|
} |
|
|
|
/* get optical driver power state */ |
|
|
|
static int get_optd_power_state(void) |
|
{ |
|
acpi_status status; |
|
unsigned long long state; |
|
int result; |
|
|
|
status = acpi_evaluate_integer(NULL, "\\_SB.STAT", NULL, &state); |
|
if (ACPI_FAILURE(status)) { |
|
pr_err("evaluation error _SB.STAT\n"); |
|
result = -EIO; |
|
goto out; |
|
} |
|
switch (state) { |
|
case 0: /* power off */ |
|
result = 0; |
|
break; |
|
case 0x0f: /* power on */ |
|
result = 1; |
|
break; |
|
default: |
|
result = -EIO; |
|
break; |
|
} |
|
|
|
out: |
|
return result; |
|
} |
|
|
|
/* set optical drive power state */ |
|
|
|
static int set_optd_power_state(int new_state) |
|
{ |
|
int result; |
|
acpi_status status; |
|
|
|
result = get_optd_power_state(); |
|
if (result < 0) |
|
goto out; |
|
if (new_state == result) |
|
goto out; |
|
|
|
switch (new_state) { |
|
case 0: /* power off */ |
|
/* Call CDDR instead, since they both call the same method |
|
* while CDDI takes 1 arg and we are not quite sure what it is. |
|
*/ |
|
status = acpi_evaluate_object(NULL, "\\_SB.CDDR", NULL, NULL); |
|
if (ACPI_FAILURE(status)) { |
|
pr_err("evaluation error _SB.CDDR\n"); |
|
result = -EIO; |
|
} |
|
break; |
|
case 1: /* power on */ |
|
status = acpi_evaluate_object(NULL, "\\_SB.FBAY", NULL, NULL); |
|
if (ACPI_FAILURE(status)) { |
|
pr_err("evaluation error _SB.FBAY\n"); |
|
result = -EIO; |
|
} |
|
break; |
|
default: |
|
result = -EINVAL; |
|
break; |
|
} |
|
|
|
out: |
|
return result; |
|
} |
|
|
|
|
|
/* sysfs user interface functions */ |
|
|
|
static ssize_t numbatt_show(struct device *dev, struct device_attribute *attr, |
|
char *buf) |
|
{ |
|
struct acpi_device *acpi = to_acpi_device(dev); |
|
struct pcc_acpi *pcc = acpi_driver_data(acpi); |
|
|
|
if (!acpi_pcc_retrieve_biosdata(pcc)) |
|
return -EIO; |
|
|
|
return snprintf(buf, PAGE_SIZE, "%u\n", pcc->sinf[SINF_NUM_BATTERIES]); |
|
} |
|
|
|
static ssize_t lcdtype_show(struct device *dev, struct device_attribute *attr, |
|
char *buf) |
|
{ |
|
struct acpi_device *acpi = to_acpi_device(dev); |
|
struct pcc_acpi *pcc = acpi_driver_data(acpi); |
|
|
|
if (!acpi_pcc_retrieve_biosdata(pcc)) |
|
return -EIO; |
|
|
|
return snprintf(buf, PAGE_SIZE, "%u\n", pcc->sinf[SINF_LCD_TYPE]); |
|
} |
|
|
|
static ssize_t mute_show(struct device *dev, struct device_attribute *attr, |
|
char *buf) |
|
{ |
|
struct acpi_device *acpi = to_acpi_device(dev); |
|
struct pcc_acpi *pcc = acpi_driver_data(acpi); |
|
|
|
if (!acpi_pcc_retrieve_biosdata(pcc)) |
|
return -EIO; |
|
|
|
return snprintf(buf, PAGE_SIZE, "%u\n", pcc->sinf[SINF_MUTE]); |
|
} |
|
|
|
static ssize_t mute_store(struct device *dev, struct device_attribute *attr, |
|
const char *buf, size_t count) |
|
{ |
|
struct acpi_device *acpi = to_acpi_device(dev); |
|
struct pcc_acpi *pcc = acpi_driver_data(acpi); |
|
int err, val; |
|
|
|
err = kstrtoint(buf, 0, &val); |
|
if (err) |
|
return err; |
|
if (val == 0 || val == 1) { |
|
acpi_pcc_write_sset(pcc, SINF_MUTE, val); |
|
pcc->mute = val; |
|
} |
|
|
|
return count; |
|
} |
|
|
|
static ssize_t sticky_key_show(struct device *dev, struct device_attribute *attr, |
|
char *buf) |
|
{ |
|
struct acpi_device *acpi = to_acpi_device(dev); |
|
struct pcc_acpi *pcc = acpi_driver_data(acpi); |
|
|
|
if (!acpi_pcc_retrieve_biosdata(pcc)) |
|
return -EIO; |
|
|
|
return snprintf(buf, PAGE_SIZE, "%u\n", pcc->sticky_key); |
|
} |
|
|
|
static ssize_t sticky_key_store(struct device *dev, struct device_attribute *attr, |
|
const char *buf, size_t count) |
|
{ |
|
struct acpi_device *acpi = to_acpi_device(dev); |
|
struct pcc_acpi *pcc = acpi_driver_data(acpi); |
|
int err, val; |
|
|
|
err = kstrtoint(buf, 0, &val); |
|
if (err) |
|
return err; |
|
if (val == 0 || val == 1) { |
|
acpi_pcc_write_sset(pcc, SINF_STICKY_KEY, val); |
|
pcc->sticky_key = val; |
|
} |
|
|
|
return count; |
|
} |
|
|
|
static ssize_t eco_mode_show(struct device *dev, struct device_attribute *attr, |
|
char *buf) |
|
{ |
|
struct acpi_device *acpi = to_acpi_device(dev); |
|
struct pcc_acpi *pcc = acpi_driver_data(acpi); |
|
int result; |
|
|
|
if (!acpi_pcc_retrieve_biosdata(pcc)) |
|
return -EIO; |
|
|
|
switch (pcc->sinf[SINF_ECO_MODE]) { |
|
case (ECO_MODE_OFF + 3): |
|
result = 0; |
|
break; |
|
case (ECO_MODE_ON + 3): |
|
result = 1; |
|
break; |
|
default: |
|
result = -EIO; |
|
break; |
|
} |
|
return snprintf(buf, PAGE_SIZE, "%u\n", result); |
|
} |
|
|
|
static ssize_t eco_mode_store(struct device *dev, struct device_attribute *attr, |
|
const char *buf, size_t count) |
|
{ |
|
struct acpi_device *acpi = to_acpi_device(dev); |
|
struct pcc_acpi *pcc = acpi_driver_data(acpi); |
|
int err, state; |
|
|
|
union acpi_object param[2]; |
|
struct acpi_object_list input; |
|
acpi_status status; |
|
|
|
param[0].type = ACPI_TYPE_INTEGER; |
|
param[0].integer.value = 0x15; |
|
param[1].type = ACPI_TYPE_INTEGER; |
|
input.count = 2; |
|
input.pointer = param; |
|
|
|
err = kstrtoint(buf, 0, &state); |
|
if (err) |
|
return err; |
|
|
|
switch (state) { |
|
case 0: |
|
param[1].integer.value = ECO_MODE_OFF; |
|
pcc->sinf[SINF_ECO_MODE] = 0; |
|
pcc->eco_mode = 0; |
|
break; |
|
case 1: |
|
param[1].integer.value = ECO_MODE_ON; |
|
pcc->sinf[SINF_ECO_MODE] = 1; |
|
pcc->eco_mode = 1; |
|
break; |
|
default: |
|
/* nothing to do */ |
|
return count; |
|
} |
|
|
|
status = acpi_evaluate_object(NULL, METHOD_ECWR, |
|
&input, NULL); |
|
if (ACPI_FAILURE(status)) { |
|
pr_err("%s evaluation failed\n", METHOD_ECWR); |
|
return -EINVAL; |
|
} |
|
|
|
return count; |
|
} |
|
|
|
static ssize_t ac_brightness_show(struct device *dev, struct device_attribute *attr, |
|
char *buf) |
|
{ |
|
struct acpi_device *acpi = to_acpi_device(dev); |
|
struct pcc_acpi *pcc = acpi_driver_data(acpi); |
|
|
|
if (!acpi_pcc_retrieve_biosdata(pcc)) |
|
return -EIO; |
|
|
|
return snprintf(buf, PAGE_SIZE, "%u\n", pcc->sinf[SINF_AC_CUR_BRIGHT]); |
|
} |
|
|
|
static ssize_t ac_brightness_store(struct device *dev, struct device_attribute *attr, |
|
const char *buf, size_t count) |
|
{ |
|
struct acpi_device *acpi = to_acpi_device(dev); |
|
struct pcc_acpi *pcc = acpi_driver_data(acpi); |
|
int err, val; |
|
|
|
err = kstrtoint(buf, 0, &val); |
|
if (err) |
|
return err; |
|
if (val >= 0 && val <= 255) { |
|
acpi_pcc_write_sset(pcc, SINF_AC_CUR_BRIGHT, val); |
|
pcc->ac_brightness = val; |
|
} |
|
|
|
return count; |
|
} |
|
|
|
static ssize_t dc_brightness_show(struct device *dev, struct device_attribute *attr, |
|
char *buf) |
|
{ |
|
struct acpi_device *acpi = to_acpi_device(dev); |
|
struct pcc_acpi *pcc = acpi_driver_data(acpi); |
|
|
|
if (!acpi_pcc_retrieve_biosdata(pcc)) |
|
return -EIO; |
|
|
|
return snprintf(buf, PAGE_SIZE, "%u\n", pcc->sinf[SINF_DC_CUR_BRIGHT]); |
|
} |
|
|
|
static ssize_t dc_brightness_store(struct device *dev, struct device_attribute *attr, |
|
const char *buf, size_t count) |
|
{ |
|
struct acpi_device *acpi = to_acpi_device(dev); |
|
struct pcc_acpi *pcc = acpi_driver_data(acpi); |
|
int err, val; |
|
|
|
err = kstrtoint(buf, 0, &val); |
|
if (err) |
|
return err; |
|
if (val >= 0 && val <= 255) { |
|
acpi_pcc_write_sset(pcc, SINF_DC_CUR_BRIGHT, val); |
|
pcc->dc_brightness = val; |
|
} |
|
|
|
return count; |
|
} |
|
|
|
static ssize_t current_brightness_show(struct device *dev, struct device_attribute *attr, |
|
char *buf) |
|
{ |
|
struct acpi_device *acpi = to_acpi_device(dev); |
|
struct pcc_acpi *pcc = acpi_driver_data(acpi); |
|
|
|
if (!acpi_pcc_retrieve_biosdata(pcc)) |
|
return -EIO; |
|
|
|
return snprintf(buf, PAGE_SIZE, "%u\n", pcc->sinf[SINF_CUR_BRIGHT]); |
|
} |
|
|
|
static ssize_t current_brightness_store(struct device *dev, struct device_attribute *attr, |
|
const char *buf, size_t count) |
|
{ |
|
struct acpi_device *acpi = to_acpi_device(dev); |
|
struct pcc_acpi *pcc = acpi_driver_data(acpi); |
|
int err, val; |
|
|
|
err = kstrtoint(buf, 0, &val); |
|
if (err) |
|
return err; |
|
|
|
if (val >= 0 && val <= 255) { |
|
err = acpi_pcc_write_sset(pcc, SINF_CUR_BRIGHT, val); |
|
pcc->current_brightness = val; |
|
} |
|
|
|
return count; |
|
} |
|
|
|
static ssize_t cdpower_show(struct device *dev, struct device_attribute *attr, |
|
char *buf) |
|
{ |
|
return snprintf(buf, PAGE_SIZE, "%d\n", get_optd_power_state()); |
|
} |
|
|
|
static ssize_t cdpower_store(struct device *dev, struct device_attribute *attr, |
|
const char *buf, size_t count) |
|
{ |
|
int err, val; |
|
|
|
err = kstrtoint(buf, 10, &val); |
|
if (err) |
|
return err; |
|
set_optd_power_state(val); |
|
return count; |
|
} |
|
|
|
static DEVICE_ATTR_RO(numbatt); |
|
static DEVICE_ATTR_RO(lcdtype); |
|
static DEVICE_ATTR_RW(mute); |
|
static DEVICE_ATTR_RW(sticky_key); |
|
static DEVICE_ATTR_RW(eco_mode); |
|
static DEVICE_ATTR_RW(ac_brightness); |
|
static DEVICE_ATTR_RW(dc_brightness); |
|
static DEVICE_ATTR_RW(current_brightness); |
|
static DEVICE_ATTR_RW(cdpower); |
|
|
|
static struct attribute *pcc_sysfs_entries[] = { |
|
&dev_attr_numbatt.attr, |
|
&dev_attr_lcdtype.attr, |
|
&dev_attr_mute.attr, |
|
&dev_attr_sticky_key.attr, |
|
&dev_attr_eco_mode.attr, |
|
&dev_attr_ac_brightness.attr, |
|
&dev_attr_dc_brightness.attr, |
|
&dev_attr_current_brightness.attr, |
|
&dev_attr_cdpower.attr, |
|
NULL, |
|
}; |
|
|
|
static const struct attribute_group pcc_attr_group = { |
|
.name = NULL, /* put in device directory */ |
|
.attrs = pcc_sysfs_entries, |
|
}; |
|
|
|
|
|
/* hotkey input device driver */ |
|
|
|
static int sleep_keydown_seen; |
|
static void acpi_pcc_generate_keyinput(struct pcc_acpi *pcc) |
|
{ |
|
struct input_dev *hotk_input_dev = pcc->input_dev; |
|
int rc; |
|
unsigned long long result; |
|
|
|
rc = acpi_evaluate_integer(pcc->handle, METHOD_HKEY_QUERY, |
|
NULL, &result); |
|
if (ACPI_FAILURE(rc)) { |
|
pr_err("error getting hotkey status\n"); |
|
return; |
|
} |
|
|
|
/* hack: some firmware sends no key down for sleep / hibernate */ |
|
if ((result & 0xf) == 0x7 || (result & 0xf) == 0xa) { |
|
if (result & 0x80) |
|
sleep_keydown_seen = 1; |
|
if (!sleep_keydown_seen) |
|
sparse_keymap_report_event(hotk_input_dev, |
|
result & 0xf, 0x80, false); |
|
} |
|
|
|
if ((result & 0xf) == 0x7 || (result & 0xf) == 0x9 || (result & 0xf) == 0xa) { |
|
if (!sparse_keymap_report_event(hotk_input_dev, |
|
result & 0xf, result & 0x80, false)) |
|
pr_err("Unknown hotkey event: 0x%04llx\n", result); |
|
} |
|
} |
|
|
|
static void acpi_pcc_hotkey_notify(struct acpi_device *device, u32 event) |
|
{ |
|
struct pcc_acpi *pcc = acpi_driver_data(device); |
|
|
|
switch (event) { |
|
case HKEY_NOTIFY: |
|
acpi_pcc_generate_keyinput(pcc); |
|
break; |
|
default: |
|
/* nothing to do */ |
|
break; |
|
} |
|
} |
|
|
|
static void pcc_optd_notify(acpi_handle handle, u32 event, void *data) |
|
{ |
|
if (event != ACPI_NOTIFY_EJECT_REQUEST) |
|
return; |
|
|
|
set_optd_power_state(0); |
|
} |
|
|
|
static int pcc_register_optd_notifier(struct pcc_acpi *pcc, char *node) |
|
{ |
|
acpi_status status; |
|
acpi_handle handle; |
|
|
|
status = acpi_get_handle(NULL, node, &handle); |
|
|
|
if (ACPI_SUCCESS(status)) { |
|
status = acpi_install_notify_handler(handle, |
|
ACPI_SYSTEM_NOTIFY, |
|
pcc_optd_notify, pcc); |
|
if (ACPI_FAILURE(status)) |
|
pr_err("Failed to register notify on %s\n", node); |
|
} else |
|
return -ENODEV; |
|
|
|
return 0; |
|
} |
|
|
|
static void pcc_unregister_optd_notifier(struct pcc_acpi *pcc, char *node) |
|
{ |
|
acpi_status status = AE_OK; |
|
acpi_handle handle; |
|
|
|
status = acpi_get_handle(NULL, node, &handle); |
|
|
|
if (ACPI_SUCCESS(status)) { |
|
status = acpi_remove_notify_handler(handle, |
|
ACPI_SYSTEM_NOTIFY, |
|
pcc_optd_notify); |
|
if (ACPI_FAILURE(status)) |
|
pr_err("Error removing optd notify handler %s\n", |
|
node); |
|
} |
|
} |
|
|
|
static int acpi_pcc_init_input(struct pcc_acpi *pcc) |
|
{ |
|
struct input_dev *input_dev; |
|
int error; |
|
|
|
input_dev = input_allocate_device(); |
|
if (!input_dev) |
|
return -ENOMEM; |
|
|
|
input_dev->name = ACPI_PCC_DRIVER_NAME; |
|
input_dev->phys = ACPI_PCC_INPUT_PHYS; |
|
input_dev->id.bustype = BUS_HOST; |
|
input_dev->id.vendor = 0x0001; |
|
input_dev->id.product = 0x0001; |
|
input_dev->id.version = 0x0100; |
|
|
|
error = sparse_keymap_setup(input_dev, panasonic_keymap, NULL); |
|
if (error) { |
|
pr_err("Unable to setup input device keymap\n"); |
|
goto err_free_dev; |
|
} |
|
|
|
error = input_register_device(input_dev); |
|
if (error) { |
|
pr_err("Unable to register input device\n"); |
|
goto err_free_dev; |
|
} |
|
|
|
pcc->input_dev = input_dev; |
|
return 0; |
|
|
|
err_free_dev: |
|
input_free_device(input_dev); |
|
return error; |
|
} |
|
|
|
/* kernel module interface */ |
|
|
|
#ifdef CONFIG_PM_SLEEP |
|
static int acpi_pcc_hotkey_resume(struct device *dev) |
|
{ |
|
struct pcc_acpi *pcc; |
|
|
|
if (!dev) |
|
return -EINVAL; |
|
|
|
pcc = acpi_driver_data(to_acpi_device(dev)); |
|
if (!pcc) |
|
return -EINVAL; |
|
|
|
acpi_pcc_write_sset(pcc, SINF_MUTE, pcc->mute); |
|
acpi_pcc_write_sset(pcc, SINF_ECO_MODE, pcc->eco_mode); |
|
acpi_pcc_write_sset(pcc, SINF_STICKY_KEY, pcc->sticky_key); |
|
acpi_pcc_write_sset(pcc, SINF_AC_CUR_BRIGHT, pcc->ac_brightness); |
|
acpi_pcc_write_sset(pcc, SINF_DC_CUR_BRIGHT, pcc->dc_brightness); |
|
acpi_pcc_write_sset(pcc, SINF_CUR_BRIGHT, pcc->current_brightness); |
|
|
|
return 0; |
|
} |
|
#endif |
|
|
|
static int acpi_pcc_hotkey_add(struct acpi_device *device) |
|
{ |
|
struct backlight_properties props; |
|
struct pcc_acpi *pcc; |
|
int num_sifr, result; |
|
|
|
if (!device) |
|
return -EINVAL; |
|
|
|
num_sifr = acpi_pcc_get_sqty(device); |
|
|
|
if (num_sifr < 0 || num_sifr > 255) { |
|
pr_err("num_sifr out of range"); |
|
return -ENODEV; |
|
} |
|
|
|
pcc = kzalloc(sizeof(struct pcc_acpi), GFP_KERNEL); |
|
if (!pcc) { |
|
pr_err("Couldn't allocate mem for pcc"); |
|
return -ENOMEM; |
|
} |
|
|
|
pcc->sinf = kcalloc(num_sifr + 1, sizeof(u32), GFP_KERNEL); |
|
if (!pcc->sinf) { |
|
result = -ENOMEM; |
|
goto out_hotkey; |
|
} |
|
|
|
pcc->device = device; |
|
pcc->handle = device->handle; |
|
pcc->num_sifr = num_sifr; |
|
device->driver_data = pcc; |
|
strcpy(acpi_device_name(device), ACPI_PCC_DEVICE_NAME); |
|
strcpy(acpi_device_class(device), ACPI_PCC_CLASS); |
|
|
|
result = acpi_pcc_init_input(pcc); |
|
if (result) { |
|
pr_err("Error installing keyinput handler\n"); |
|
goto out_sinf; |
|
} |
|
|
|
if (!acpi_pcc_retrieve_biosdata(pcc)) { |
|
result = -EIO; |
|
pr_err("Couldn't retrieve BIOS data\n"); |
|
goto out_input; |
|
} |
|
/* initialize backlight */ |
|
memset(&props, 0, sizeof(struct backlight_properties)); |
|
props.type = BACKLIGHT_PLATFORM; |
|
props.max_brightness = pcc->sinf[SINF_AC_MAX_BRIGHT]; |
|
pcc->backlight = backlight_device_register("panasonic", NULL, pcc, |
|
&pcc_backlight_ops, &props); |
|
if (IS_ERR(pcc->backlight)) { |
|
result = PTR_ERR(pcc->backlight); |
|
goto out_input; |
|
} |
|
|
|
/* read the initial brightness setting from the hardware */ |
|
pcc->backlight->props.brightness = pcc->sinf[SINF_AC_CUR_BRIGHT]; |
|
|
|
/* Reset initial sticky key mode since the hardware register state is not consistent */ |
|
acpi_pcc_write_sset(pcc, SINF_STICKY_KEY, 0); |
|
pcc->sticky_key = 0; |
|
|
|
pcc->eco_mode = pcc->sinf[SINF_ECO_MODE]; |
|
pcc->mute = pcc->sinf[SINF_MUTE]; |
|
pcc->ac_brightness = pcc->sinf[SINF_AC_CUR_BRIGHT]; |
|
pcc->dc_brightness = pcc->sinf[SINF_DC_CUR_BRIGHT]; |
|
pcc->current_brightness = pcc->sinf[SINF_CUR_BRIGHT]; |
|
|
|
/* add sysfs attributes */ |
|
result = sysfs_create_group(&device->dev.kobj, &pcc_attr_group); |
|
if (result) |
|
goto out_backlight; |
|
|
|
/* optical drive initialization */ |
|
if (ACPI_SUCCESS(check_optd_present())) { |
|
pcc->platform = platform_device_register_simple("panasonic", |
|
-1, NULL, 0); |
|
if (IS_ERR(pcc->platform)) { |
|
result = PTR_ERR(pcc->platform); |
|
goto out_backlight; |
|
} |
|
result = device_create_file(&pcc->platform->dev, |
|
&dev_attr_cdpower); |
|
pcc_register_optd_notifier(pcc, "\\_SB.PCI0.EHCI.ERHB.OPTD"); |
|
if (result) |
|
goto out_platform; |
|
} else { |
|
pcc->platform = NULL; |
|
} |
|
|
|
return 0; |
|
|
|
out_platform: |
|
platform_device_unregister(pcc->platform); |
|
out_backlight: |
|
backlight_device_unregister(pcc->backlight); |
|
out_input: |
|
input_unregister_device(pcc->input_dev); |
|
out_sinf: |
|
kfree(pcc->sinf); |
|
out_hotkey: |
|
kfree(pcc); |
|
|
|
return result; |
|
} |
|
|
|
static int acpi_pcc_hotkey_remove(struct acpi_device *device) |
|
{ |
|
struct pcc_acpi *pcc = acpi_driver_data(device); |
|
|
|
if (!device || !pcc) |
|
return -EINVAL; |
|
|
|
if (pcc->platform) { |
|
device_remove_file(&pcc->platform->dev, &dev_attr_cdpower); |
|
platform_device_unregister(pcc->platform); |
|
} |
|
pcc_unregister_optd_notifier(pcc, "\\_SB.PCI0.EHCI.ERHB.OPTD"); |
|
|
|
sysfs_remove_group(&device->dev.kobj, &pcc_attr_group); |
|
|
|
backlight_device_unregister(pcc->backlight); |
|
|
|
input_unregister_device(pcc->input_dev); |
|
|
|
kfree(pcc->sinf); |
|
kfree(pcc); |
|
|
|
return 0; |
|
} |
|
|
|
module_acpi_driver(acpi_pcc_driver);
|
|
|