mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
1237 lines
35 KiB
C
1237 lines
35 KiB
C
/*
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* asus_acpi.c - Asus Laptop ACPI Extras
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*
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*
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* Copyright (C) 2002, 2003, 2004 Julien Lerouge, Karol Kozimor
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*
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* The development page for this driver is located at
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* http://sourceforge.net/projects/acpi4asus/
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*
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* Credits:
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* Pontus Fuchs - Helper functions, cleanup
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* Johann Wiesner - Small compile fixes
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* John Belmonte - ACPI code for Toshiba laptop was a good starting point.
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*
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* TODO:
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* add Fn key status
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* Add mode selection on module loading (parameter) -> still necessary?
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* Complete display switching -- may require dirty hacks or calling _DOS?
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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/proc_fs.h>
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#include <acpi/acpi_drivers.h>
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#include <acpi/acpi_bus.h>
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#include <asm/uaccess.h>
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#define ASUS_ACPI_VERSION "0.29"
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#define PROC_ASUS "asus" //the directory
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#define PROC_MLED "mled"
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#define PROC_WLED "wled"
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#define PROC_TLED "tled"
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#define PROC_INFO "info"
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#define PROC_LCD "lcd"
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#define PROC_BRN "brn"
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#define PROC_DISP "disp"
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#define ACPI_HOTK_NAME "Asus Laptop ACPI Extras Driver"
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#define ACPI_HOTK_CLASS "hotkey"
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#define ACPI_HOTK_DEVICE_NAME "Hotkey"
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#define ACPI_HOTK_HID "ATK0100"
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/*
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* Some events we use, same for all Asus
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*/
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#define BR_UP 0x10
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#define BR_DOWN 0x20
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/*
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* Flags for hotk status
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*/
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#define MLED_ON 0x01 //is MLED ON ?
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#define WLED_ON 0x02
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#define TLED_ON 0x04
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MODULE_AUTHOR("Julien Lerouge, Karol Kozimor");
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MODULE_DESCRIPTION(ACPI_HOTK_NAME);
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MODULE_LICENSE("GPL");
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static uid_t asus_uid;
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static gid_t asus_gid;
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module_param(asus_uid, uint, 0);
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MODULE_PARM_DESC(uid, "UID for entries in /proc/acpi/asus.\n");
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module_param(asus_gid, uint, 0);
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MODULE_PARM_DESC(gid, "GID for entries in /proc/acpi/asus.\n");
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/* For each model, all features implemented,
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* those marked with R are relative to HOTK, A for absolute */
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struct model_data {
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char *name; //name of the laptop________________A
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char *mt_mled; //method to handle mled_____________R
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char *mled_status; //node to handle mled reading_______A
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char *mt_wled; //method to handle wled_____________R
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char *wled_status; //node to handle wled reading_______A
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char *mt_tled; //method to handle tled_____________R
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char *tled_status; //node to handle tled reading_______A
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char *mt_lcd_switch; //method to turn LCD ON/OFF_________A
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char *lcd_status; //node to read LCD panel state______A
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char *brightness_up; //method to set brightness up_______A
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char *brightness_down; //guess what ?______________________A
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char *brightness_set; //method to set absolute brightness_R
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char *brightness_get; //method to get absolute brightness_R
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char *brightness_status; //node to get brightness____________A
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char *display_set; //method to set video output________R
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char *display_get; //method to get video output________R
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};
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/*
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* This is the main structure, we can use it to store anything interesting
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* about the hotk device
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*/
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struct asus_hotk {
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struct acpi_device *device; //the device we are in
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acpi_handle handle; //the handle of the hotk device
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char status; //status of the hotk, for LEDs, ...
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struct model_data *methods; //methods available on the laptop
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u8 brightness; //brightness level
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enum {
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A1x = 0, //A1340D, A1300F
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A2x, //A2500H
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D1x, //D1
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L2D, //L2000D
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L3C, //L3800C
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L3D, //L3400D
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L3H, //L3H, but also L2000E
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L4R, //L4500R
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L5x, //L5800C
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L8L, //L8400L
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M1A, //M1300A
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M2E, //M2400E, L4400L
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M6N, //M6800N
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M6R, //M6700R
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P30, //Samsung P30
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S1x, //S1300A, but also L1400B and M2400A (L84F)
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S2x, //S200 (J1 reported), Victor MP-XP7210
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xxN, //M2400N, M3700N, M5200N, S1300N, S5200N, W1OOON
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//(Centrino)
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END_MODEL
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} model; //Models currently supported
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u16 event_count[128]; //count for each event TODO make this better
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};
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/* Here we go */
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#define A1x_PREFIX "\\_SB.PCI0.ISA.EC0."
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#define L3C_PREFIX "\\_SB.PCI0.PX40.ECD0."
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#define M1A_PREFIX "\\_SB.PCI0.PX40.EC0."
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#define P30_PREFIX "\\_SB.PCI0.LPCB.EC0."
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#define S1x_PREFIX "\\_SB.PCI0.PX40."
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#define S2x_PREFIX A1x_PREFIX
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#define xxN_PREFIX "\\_SB.PCI0.SBRG.EC0."
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static struct model_data model_conf[END_MODEL] = {
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/*
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* Those pathnames are relative to the HOTK / ATKD device :
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* - mt_mled
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* - mt_wled
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* - brightness_set
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* - brightness_get
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* - display_set
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* - display_get
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*
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* TODO I have seen a SWBX and AIBX method on some models, like L1400B,
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* it seems to be a kind of switch, but what for ?
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*
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*/
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{
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.name = "A1x",
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.mt_mled = "MLED",
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.mled_status = "\\MAIL",
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.mt_lcd_switch = A1x_PREFIX "_Q10",
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.lcd_status = "\\BKLI",
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.brightness_up = A1x_PREFIX "_Q0E",
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.brightness_down = A1x_PREFIX "_Q0F"
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},
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{
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.name = "A2x",
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.mt_mled = "MLED",
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.mt_wled = "WLED",
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.wled_status = "\\SG66",
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.mt_lcd_switch = "\\Q10",
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.lcd_status = "\\BAOF",
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.brightness_set = "SPLV",
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.brightness_get = "GPLV",
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.display_set = "SDSP",
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.display_get = "\\INFB"
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},
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{
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.name = "D1x",
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.mt_mled = "MLED",
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.mt_lcd_switch = "\\Q0D",
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.lcd_status = "\\GP11",
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.brightness_up = "\\Q0C",
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.brightness_down = "\\Q0B",
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.brightness_status = "\\BLVL",
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.display_set = "SDSP",
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.display_get = "\\INFB"
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},
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{
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.name = "L2D",
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.mt_mled = "MLED",
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.mled_status = "\\SGP6",
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.mt_wled = "WLED",
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.wled_status = "\\RCP3",
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.mt_lcd_switch = "\\Q10",
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.lcd_status = "\\SGP0",
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.brightness_up = "\\Q0E",
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.brightness_down = "\\Q0F",
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.display_set = "SDSP",
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.display_get = "\\INFB"
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},
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{
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.name = "L3C",
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.mt_mled = "MLED",
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.mt_wled = "WLED",
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.mt_lcd_switch = L3C_PREFIX "_Q10",
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.lcd_status = "\\GL32",
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.brightness_set = "SPLV",
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.brightness_get = "GPLV",
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.display_set = "SDSP",
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.display_get = "\\_SB.PCI0.PCI1.VGAC.NMAP"
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},
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{
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.name = "L3D",
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.mt_mled = "MLED",
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.mled_status = "\\MALD",
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.mt_wled = "WLED",
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.mt_lcd_switch = "\\Q10",
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.lcd_status = "\\BKLG",
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.brightness_set = "SPLV",
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.brightness_get = "GPLV",
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.display_set = "SDSP",
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.display_get = "\\INFB"
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},
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{
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.name = "L3H",
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.mt_mled = "MLED",
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.mt_wled = "WLED",
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.mt_lcd_switch = "EHK",
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.lcd_status = "\\_SB.PCI0.PM.PBC",
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.brightness_set = "SPLV",
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.brightness_get = "GPLV",
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.display_set = "SDSP",
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.display_get = "\\INFB"
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},
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{
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.name = "L4R",
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.mt_mled = "MLED",
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.mt_wled = "WLED",
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.wled_status = "\\_SB.PCI0.SBRG.SG13",
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.mt_lcd_switch = xxN_PREFIX "_Q10",
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.lcd_status = "\\_SB.PCI0.SBSM.SEO4",
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.brightness_set = "SPLV",
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.brightness_get = "GPLV",
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.display_set = "SDSP",
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.display_get = "\\_SB.PCI0.P0P1.VGA.GETD"
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},
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{
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.name = "L5x",
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.mt_mled = "MLED",
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/* WLED present, but not controlled by ACPI */
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.mt_tled = "TLED",
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.mt_lcd_switch = "\\Q0D",
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.lcd_status = "\\BAOF",
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.brightness_set = "SPLV",
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.brightness_get = "GPLV",
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.display_set = "SDSP",
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.display_get = "\\INFB"
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},
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{
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.name = "L8L"
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/* No features, but at least support the hotkeys */
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},
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{
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.name = "M1A",
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.mt_mled = "MLED",
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.mt_lcd_switch = M1A_PREFIX "Q10",
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.lcd_status = "\\PNOF",
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.brightness_up = M1A_PREFIX "Q0E",
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.brightness_down = M1A_PREFIX "Q0F",
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.brightness_status = "\\BRIT",
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.display_set = "SDSP",
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.display_get = "\\INFB"
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},
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{
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.name = "M2E",
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.mt_mled = "MLED",
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.mt_wled = "WLED",
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.mt_lcd_switch = "\\Q10",
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.lcd_status = "\\GP06",
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.brightness_set = "SPLV",
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.brightness_get = "GPLV",
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.display_set = "SDSP",
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.display_get = "\\INFB"
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},
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{
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.name = "M6N",
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.mt_mled = "MLED",
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.mt_wled = "WLED",
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.wled_status = "\\_SB.PCI0.SBRG.SG13",
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.mt_lcd_switch = xxN_PREFIX "_Q10",
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.lcd_status = "\\_SB.BKLT",
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.brightness_set = "SPLV",
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.brightness_get = "GPLV",
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.display_set = "SDSP",
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.display_get = "\\SSTE"
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},
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{
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.name = "M6R",
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.mt_mled = "MLED",
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.mt_wled = "WLED",
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.mt_lcd_switch = xxN_PREFIX "_Q10",
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.lcd_status = "\\_SB.PCI0.SBSM.SEO4",
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.brightness_set = "SPLV",
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.brightness_get = "GPLV",
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.display_set = "SDSP",
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.display_get = "\\SSTE"
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},
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{
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.name = "P30",
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.mt_wled = "WLED",
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.mt_lcd_switch = P30_PREFIX "_Q0E",
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.lcd_status = "\\BKLT",
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.brightness_up = P30_PREFIX "_Q68",
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.brightness_down = P30_PREFIX "_Q69",
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.brightness_get = "GPLV",
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.display_set = "SDSP",
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.display_get = "\\DNXT"
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},
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{
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.name = "S1x",
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.mt_mled = "MLED",
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.mled_status = "\\EMLE",
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.mt_wled = "WLED",
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.mt_lcd_switch = S1x_PREFIX "Q10" ,
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.lcd_status = "\\PNOF",
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.brightness_set = "SPLV",
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.brightness_get = "GPLV"
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},
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{
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.name = "S2x",
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.mt_mled = "MLED",
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.mled_status = "\\MAIL",
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.mt_lcd_switch = S2x_PREFIX "_Q10",
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.lcd_status = "\\BKLI",
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.brightness_up = S2x_PREFIX "_Q0B",
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.brightness_down = S2x_PREFIX "_Q0A"
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},
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{
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.name = "xxN",
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.mt_mled = "MLED",
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/* WLED present, but not controlled by ACPI */
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.mt_lcd_switch = xxN_PREFIX "_Q10",
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.lcd_status = "\\BKLT",
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.brightness_set = "SPLV",
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.brightness_get = "GPLV",
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.display_set = "SDSP",
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.display_get = "\\ADVG"
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}
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};
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/* procdir we use */
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static struct proc_dir_entry *asus_proc_dir;
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/*
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* This header is made available to allow proper configuration given model,
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* revision number , ... this info cannot go in struct asus_hotk because it is
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* available before the hotk
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*/
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static struct acpi_table_header *asus_info;
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/* The actual device the driver binds to */
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static struct asus_hotk *hotk;
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/*
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* The hotkey driver declaration
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*/
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static int asus_hotk_add(struct acpi_device *device);
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static int asus_hotk_remove(struct acpi_device *device, int type);
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static struct acpi_driver asus_hotk_driver = {
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.name = ACPI_HOTK_NAME,
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.class = ACPI_HOTK_CLASS,
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.ids = ACPI_HOTK_HID,
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.ops = {
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.add = asus_hotk_add,
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.remove = asus_hotk_remove,
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},
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};
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/*
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* This function evaluates an ACPI method, given an int as parameter, the
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* method is searched within the scope of the handle, can be NULL. The output
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* of the method is written is output, which can also be NULL
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*
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* returns 1 if write is successful, 0 else.
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*/
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static int write_acpi_int(acpi_handle handle, const char *method, int val,
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struct acpi_buffer *output)
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{
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struct acpi_object_list params; //list of input parameters (an int here)
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union acpi_object in_obj; //the only param we use
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acpi_status status;
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params.count = 1;
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params.pointer = &in_obj;
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in_obj.type = ACPI_TYPE_INTEGER;
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in_obj.integer.value = val;
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status = acpi_evaluate_object(handle, (char *) method, ¶ms, output);
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return (status == AE_OK);
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}
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static int read_acpi_int(acpi_handle handle, const char *method, int *val)
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{
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struct acpi_buffer output;
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union acpi_object out_obj;
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acpi_status status;
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output.length = sizeof(out_obj);
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output.pointer = &out_obj;
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status = acpi_evaluate_object(handle, (char *) method, NULL, &output);
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*val = out_obj.integer.value;
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return (status == AE_OK) && (out_obj.type == ACPI_TYPE_INTEGER);
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}
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/*
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* We write our info in page, we begin at offset off and cannot write more
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* than count bytes. We set eof to 1 if we handle those 2 values. We return the
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* number of bytes written in page
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*/
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static int
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proc_read_info(char *page, char **start, off_t off, int count, int *eof,
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void *data)
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{
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int len = 0;
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int temp;
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char buf[16]; //enough for all info
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/*
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* We use the easy way, we don't care of off and count, so we don't set eof
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* to 1
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*/
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len += sprintf(page, ACPI_HOTK_NAME " " ASUS_ACPI_VERSION "\n");
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len += sprintf(page + len, "Model reference : %s\n",
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hotk->methods->name);
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/*
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* The SFUN method probably allows the original driver to get the list
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* of features supported by a given model. For now, 0x0100 or 0x0800
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* bit signifies that the laptop is equipped with a Wi-Fi MiniPCI card.
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* The significance of others is yet to be found.
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*/
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if (read_acpi_int(hotk->handle, "SFUN", &temp))
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len += sprintf(page + len, "SFUN value : 0x%04x\n", temp);
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/*
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* Another value for userspace: the ASYM method returns 0x02 for
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* battery low and 0x04 for battery critical, its readings tend to be
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* more accurate than those provided by _BST.
|
|
* Note: since not all the laptops provide this method, errors are
|
|
* silently ignored.
|
|
*/
|
|
if (read_acpi_int(hotk->handle, "ASYM", &temp))
|
|
len += sprintf(page + len, "ASYM value : 0x%04x\n", temp);
|
|
if (asus_info) {
|
|
snprintf(buf, 16, "%d", asus_info->length);
|
|
len += sprintf(page + len, "DSDT length : %s\n", buf);
|
|
snprintf(buf, 16, "%d", asus_info->checksum);
|
|
len += sprintf(page + len, "DSDT checksum : %s\n", buf);
|
|
snprintf(buf, 16, "%d", asus_info->revision);
|
|
len += sprintf(page + len, "DSDT revision : %s\n", buf);
|
|
snprintf(buf, 7, "%s", asus_info->oem_id);
|
|
len += sprintf(page + len, "OEM id : %s\n", buf);
|
|
snprintf(buf, 9, "%s", asus_info->oem_table_id);
|
|
len += sprintf(page + len, "OEM table id : %s\n", buf);
|
|
snprintf(buf, 16, "%x", asus_info->oem_revision);
|
|
len += sprintf(page + len, "OEM revision : 0x%s\n", buf);
|
|
snprintf(buf, 5, "%s", asus_info->asl_compiler_id);
|
|
len += sprintf(page + len, "ASL comp vendor id : %s\n", buf);
|
|
snprintf(buf, 16, "%x", asus_info->asl_compiler_revision);
|
|
len += sprintf(page + len, "ASL comp revision : 0x%s\n", buf);
|
|
}
|
|
|
|
return len;
|
|
}
|
|
|
|
|
|
/*
|
|
* /proc handlers
|
|
* We write our info in page, we begin at offset off and cannot write more
|
|
* than count bytes. We set eof to 1 if we handle those 2 values. We return the
|
|
* number of bytes written in page
|
|
*/
|
|
|
|
/* Generic LED functions */
|
|
static int
|
|
read_led(const char *ledname, int ledmask)
|
|
{
|
|
if (ledname) {
|
|
int led_status;
|
|
|
|
if (read_acpi_int(NULL, ledname, &led_status))
|
|
return led_status;
|
|
else
|
|
printk(KERN_WARNING "Asus ACPI: Error reading LED "
|
|
"status\n");
|
|
}
|
|
return (hotk->status & ledmask) ? 1 : 0;
|
|
}
|
|
|
|
static int parse_arg(const char __user *buf, unsigned long count, int *val)
|
|
{
|
|
char s[32];
|
|
if (!count)
|
|
return 0;
|
|
if (count > 31)
|
|
return -EINVAL;
|
|
if (copy_from_user(s, buf, count))
|
|
return -EFAULT;
|
|
s[count] = 0;
|
|
if (sscanf(s, "%i", val) != 1)
|
|
return -EINVAL;
|
|
return count;
|
|
}
|
|
|
|
/* FIXME: kill extraneous args so it can be called independently */
|
|
static int
|
|
write_led(const char __user *buffer, unsigned long count,
|
|
char *ledname, int ledmask, int invert)
|
|
{
|
|
int value;
|
|
int led_out = 0;
|
|
|
|
count = parse_arg(buffer, count, &value);
|
|
if (count > 0)
|
|
led_out = value ? 1 : 0;
|
|
|
|
hotk->status =
|
|
(led_out) ? (hotk->status | ledmask) : (hotk->status & ~ledmask);
|
|
|
|
if (invert) /* invert target value */
|
|
led_out = !led_out & 0x1;
|
|
|
|
if (!write_acpi_int(hotk->handle, ledname, led_out, NULL))
|
|
printk(KERN_WARNING "Asus ACPI: LED (%s) write failed\n", ledname);
|
|
|
|
return count;
|
|
}
|
|
|
|
|
|
/*
|
|
* Proc handlers for MLED
|
|
*/
|
|
static int
|
|
proc_read_mled(char *page, char **start, off_t off, int count, int *eof,
|
|
void *data)
|
|
{
|
|
return sprintf(page, "%d\n", read_led(hotk->methods->mled_status, MLED_ON));
|
|
}
|
|
|
|
|
|
static int
|
|
proc_write_mled(struct file *file, const char __user *buffer,
|
|
unsigned long count, void *data)
|
|
{
|
|
return write_led(buffer, count, hotk->methods->mt_mled, MLED_ON, 1);
|
|
}
|
|
|
|
/*
|
|
* Proc handlers for WLED
|
|
*/
|
|
static int
|
|
proc_read_wled(char *page, char **start, off_t off, int count, int *eof,
|
|
void *data)
|
|
{
|
|
return sprintf(page, "%d\n", read_led(hotk->methods->wled_status, WLED_ON));
|
|
}
|
|
|
|
static int
|
|
proc_write_wled(struct file *file, const char __user *buffer,
|
|
unsigned long count, void *data)
|
|
{
|
|
return write_led(buffer, count, hotk->methods->mt_wled, WLED_ON, 0);
|
|
}
|
|
|
|
/*
|
|
* Proc handlers for TLED
|
|
*/
|
|
static int
|
|
proc_read_tled(char *page, char **start, off_t off, int count, int *eof,
|
|
void *data)
|
|
{
|
|
return sprintf(page, "%d\n", read_led(hotk->methods->tled_status, TLED_ON));
|
|
}
|
|
|
|
static int
|
|
proc_write_tled(struct file *file, const char __user *buffer,
|
|
unsigned long count, void *data)
|
|
{
|
|
return write_led(buffer, count, hotk->methods->mt_tled, TLED_ON, 0);
|
|
}
|
|
|
|
|
|
static int get_lcd_state(void)
|
|
{
|
|
int lcd = 0;
|
|
|
|
if (hotk->model != L3H) {
|
|
/* We don't have to check anything if we are here */
|
|
if (!read_acpi_int(NULL, hotk->methods->lcd_status, &lcd))
|
|
printk(KERN_WARNING "Asus ACPI: Error reading LCD status\n");
|
|
|
|
if (hotk->model == L2D)
|
|
lcd = ~lcd;
|
|
} else { /* L3H and the like have to be handled differently */
|
|
acpi_status status = 0;
|
|
struct acpi_object_list input;
|
|
union acpi_object mt_params[2];
|
|
struct acpi_buffer output;
|
|
union acpi_object out_obj;
|
|
|
|
input.count = 2;
|
|
input.pointer = mt_params;
|
|
/* Note: the following values are partly guessed up, but
|
|
otherwise they seem to work */
|
|
mt_params[0].type = ACPI_TYPE_INTEGER;
|
|
mt_params[0].integer.value = 0x02;
|
|
mt_params[1].type = ACPI_TYPE_INTEGER;
|
|
mt_params[1].integer.value = 0x02;
|
|
|
|
output.length = sizeof(out_obj);
|
|
output.pointer = &out_obj;
|
|
|
|
status = acpi_evaluate_object(NULL, hotk->methods->lcd_status, &input, &output);
|
|
if (status != AE_OK)
|
|
return -1;
|
|
if (out_obj.type == ACPI_TYPE_INTEGER)
|
|
/* That's what the AML code does */
|
|
lcd = out_obj.integer.value >> 8;
|
|
}
|
|
|
|
return (lcd & 1);
|
|
}
|
|
|
|
static int set_lcd_state(int value)
|
|
{
|
|
int lcd = 0;
|
|
acpi_status status = 0;
|
|
|
|
lcd = value ? 1 : 0;
|
|
if (lcd != get_lcd_state()) {
|
|
/* switch */
|
|
if (hotk->model != L3H) {
|
|
status =
|
|
acpi_evaluate_object(NULL, hotk->methods->mt_lcd_switch,
|
|
NULL, NULL);
|
|
} else { /* L3H and the like have to be handled differently */
|
|
if (!write_acpi_int(hotk->handle, hotk->methods->mt_lcd_switch, 0x07, NULL))
|
|
status = AE_ERROR;
|
|
/* L3H's AML executes EHK (0x07) upon Fn+F7 keypress,
|
|
the exact behaviour is simulated here */
|
|
}
|
|
if (ACPI_FAILURE(status))
|
|
printk(KERN_WARNING "Asus ACPI: Error switching LCD\n");
|
|
}
|
|
return 0;
|
|
|
|
}
|
|
|
|
static int
|
|
proc_read_lcd(char *page, char **start, off_t off, int count, int *eof,
|
|
void *data)
|
|
{
|
|
return sprintf(page, "%d\n", get_lcd_state());
|
|
}
|
|
|
|
|
|
static int
|
|
proc_write_lcd(struct file *file, const char __user *buffer,
|
|
unsigned long count, void *data)
|
|
{
|
|
int value;
|
|
|
|
count = parse_arg(buffer, count, &value);
|
|
if (count > 0)
|
|
set_lcd_state(value);
|
|
return count;
|
|
}
|
|
|
|
|
|
static int read_brightness(void)
|
|
{
|
|
int value;
|
|
|
|
if(hotk->methods->brightness_get) { /* SPLV/GPLV laptop */
|
|
if (!read_acpi_int(hotk->handle, hotk->methods->brightness_get,
|
|
&value))
|
|
printk(KERN_WARNING "Asus ACPI: Error reading brightness\n");
|
|
} else if (hotk->methods->brightness_status) { /* For D1 for example */
|
|
if (!read_acpi_int(NULL, hotk->methods->brightness_status,
|
|
&value))
|
|
printk(KERN_WARNING "Asus ACPI: Error reading brightness\n");
|
|
} else /* No GPLV method */
|
|
value = hotk->brightness;
|
|
return value;
|
|
}
|
|
|
|
/*
|
|
* Change the brightness level
|
|
*/
|
|
static void set_brightness(int value)
|
|
{
|
|
acpi_status status = 0;
|
|
|
|
/* SPLV laptop */
|
|
if(hotk->methods->brightness_set) {
|
|
if (!write_acpi_int(hotk->handle, hotk->methods->brightness_set,
|
|
value, NULL))
|
|
printk(KERN_WARNING "Asus ACPI: Error changing brightness\n");
|
|
return;
|
|
}
|
|
|
|
/* No SPLV method if we are here, act as appropriate */
|
|
value -= read_brightness();
|
|
while (value != 0) {
|
|
status = acpi_evaluate_object(NULL, (value > 0) ?
|
|
hotk->methods->brightness_up :
|
|
hotk->methods->brightness_down,
|
|
NULL, NULL);
|
|
(value > 0) ? value-- : value++;
|
|
if (ACPI_FAILURE(status))
|
|
printk(KERN_WARNING "Asus ACPI: Error changing brightness\n");
|
|
}
|
|
return;
|
|
}
|
|
|
|
static int
|
|
proc_read_brn(char *page, char **start, off_t off, int count, int *eof,
|
|
void *data)
|
|
{
|
|
return sprintf(page, "%d\n", read_brightness());
|
|
}
|
|
|
|
static int
|
|
proc_write_brn(struct file *file, const char __user *buffer,
|
|
unsigned long count, void *data)
|
|
{
|
|
int value;
|
|
|
|
count = parse_arg(buffer, count, &value);
|
|
if (count > 0) {
|
|
value = (0 < value) ? ((15 < value) ? 15 : value) : 0;
|
|
/* 0 <= value <= 15 */
|
|
set_brightness(value);
|
|
} else if (count < 0) {
|
|
printk(KERN_WARNING "Asus ACPI: Error reading user input\n");
|
|
}
|
|
|
|
return count;
|
|
}
|
|
|
|
static void set_display(int value)
|
|
{
|
|
/* no sanity check needed for now */
|
|
if (!write_acpi_int(hotk->handle, hotk->methods->display_set,
|
|
value, NULL))
|
|
printk(KERN_WARNING "Asus ACPI: Error setting display\n");
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Now, *this* one could be more user-friendly, but so far, no-one has
|
|
* complained. The significance of bits is the same as in proc_write_disp()
|
|
*/
|
|
static int
|
|
proc_read_disp(char *page, char **start, off_t off, int count, int *eof,
|
|
void *data)
|
|
{
|
|
int value = 0;
|
|
|
|
if (!read_acpi_int(hotk->handle, hotk->methods->display_get, &value))
|
|
printk(KERN_WARNING "Asus ACPI: Error reading display status\n");
|
|
value &= 0x07; /* needed for some models, shouldn't hurt others */
|
|
return sprintf(page, "%d\n", value);
|
|
}
|
|
|
|
/*
|
|
* Experimental support for display switching. As of now: 1 should activate
|
|
* the LCD output, 2 should do for CRT, and 4 for TV-Out. Any combination
|
|
* (bitwise) of these will suffice. I never actually tested 3 displays hooked up
|
|
* simultaneously, so be warned. See the acpi4asus README for more info.
|
|
*/
|
|
static int
|
|
proc_write_disp(struct file *file, const char __user *buffer,
|
|
unsigned long count, void *data)
|
|
{
|
|
int value;
|
|
|
|
count = parse_arg(buffer, count, &value);
|
|
if (count > 0)
|
|
set_display(value);
|
|
else if (count < 0)
|
|
printk(KERN_WARNING "Asus ACPI: Error reading user input\n");
|
|
|
|
return count;
|
|
}
|
|
|
|
|
|
typedef int (proc_readfunc)(char *page, char **start, off_t off, int count,
|
|
int *eof, void *data);
|
|
typedef int (proc_writefunc)(struct file *file, const char __user *buffer,
|
|
unsigned long count, void *data);
|
|
|
|
static int
|
|
__init asus_proc_add(char *name, proc_writefunc *writefunc,
|
|
proc_readfunc *readfunc, mode_t mode,
|
|
struct acpi_device *device)
|
|
{
|
|
struct proc_dir_entry *proc = create_proc_entry(name, mode, acpi_device_dir(device));
|
|
if(!proc) {
|
|
printk(KERN_WARNING " Unable to create %s fs entry\n", name);
|
|
return -1;
|
|
}
|
|
proc->write_proc = writefunc;
|
|
proc->read_proc = readfunc;
|
|
proc->data = acpi_driver_data(device);
|
|
proc->owner = THIS_MODULE;
|
|
proc->uid = asus_uid;
|
|
proc->gid = asus_gid;
|
|
return 0;
|
|
}
|
|
|
|
static int __init asus_hotk_add_fs(struct acpi_device *device)
|
|
{
|
|
struct proc_dir_entry *proc;
|
|
mode_t mode;
|
|
|
|
/*
|
|
* If parameter uid or gid is not changed, keep the default setting for
|
|
* our proc entries (-rw-rw-rw-) else, it means we care about security,
|
|
* and then set to -rw-rw----
|
|
*/
|
|
|
|
if ((asus_uid == 0) && (asus_gid == 0)){
|
|
mode = S_IFREG | S_IRUGO | S_IWUGO;
|
|
} else {
|
|
mode = S_IFREG | S_IRUSR | S_IRGRP | S_IWUSR | S_IWGRP;
|
|
}
|
|
|
|
acpi_device_dir(device) = asus_proc_dir;
|
|
if (!acpi_device_dir(device))
|
|
return -ENODEV;
|
|
|
|
proc = create_proc_entry(PROC_INFO, mode, acpi_device_dir(device));
|
|
if (proc) {
|
|
proc->read_proc = proc_read_info;
|
|
proc->data = acpi_driver_data(device);
|
|
proc->owner = THIS_MODULE;
|
|
proc->uid = asus_uid;
|
|
proc->gid = asus_gid;
|
|
} else {
|
|
printk(KERN_WARNING " Unable to create " PROC_INFO
|
|
" fs entry\n");
|
|
}
|
|
|
|
if (hotk->methods->mt_wled) {
|
|
asus_proc_add(PROC_WLED, &proc_write_wled, &proc_read_wled, mode, device);
|
|
}
|
|
|
|
if (hotk->methods->mt_mled) {
|
|
asus_proc_add(PROC_MLED, &proc_write_mled, &proc_read_mled, mode, device);
|
|
}
|
|
|
|
if (hotk->methods->mt_tled) {
|
|
asus_proc_add(PROC_TLED, &proc_write_tled, &proc_read_tled, mode, device);
|
|
}
|
|
|
|
/*
|
|
* We need both read node and write method as LCD switch is also accessible
|
|
* from keyboard
|
|
*/
|
|
if (hotk->methods->mt_lcd_switch && hotk->methods->lcd_status) {
|
|
asus_proc_add(PROC_LCD, &proc_write_lcd, &proc_read_lcd, mode, device);
|
|
}
|
|
|
|
if ((hotk->methods->brightness_up && hotk->methods->brightness_down) ||
|
|
(hotk->methods->brightness_get && hotk->methods->brightness_set)) {
|
|
asus_proc_add(PROC_BRN, &proc_write_brn, &proc_read_brn, mode, device);
|
|
}
|
|
|
|
if (hotk->methods->display_set) {
|
|
asus_proc_add(PROC_DISP, &proc_write_disp, &proc_read_disp, mode, device);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int asus_hotk_remove_fs(struct acpi_device* device)
|
|
{
|
|
if(acpi_device_dir(device)) {
|
|
remove_proc_entry(PROC_INFO,acpi_device_dir(device));
|
|
if (hotk->methods->mt_wled)
|
|
remove_proc_entry(PROC_WLED,acpi_device_dir(device));
|
|
if (hotk->methods->mt_mled)
|
|
remove_proc_entry(PROC_MLED,acpi_device_dir(device));
|
|
if (hotk->methods->mt_tled)
|
|
remove_proc_entry(PROC_TLED,acpi_device_dir(device));
|
|
if (hotk->methods->mt_lcd_switch && hotk->methods->lcd_status)
|
|
remove_proc_entry(PROC_LCD, acpi_device_dir(device));
|
|
if ((hotk->methods->brightness_up && hotk->methods->brightness_down) ||
|
|
(hotk->methods->brightness_get && hotk->methods->brightness_set))
|
|
remove_proc_entry(PROC_BRN, acpi_device_dir(device));
|
|
if (hotk->methods->display_set)
|
|
remove_proc_entry(PROC_DISP, acpi_device_dir(device));
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
static void asus_hotk_notify(acpi_handle handle, u32 event, void *data)
|
|
{
|
|
/* TODO Find a better way to handle events count.*/
|
|
if (!hotk)
|
|
return;
|
|
|
|
if ((event & ~((u32) BR_UP)) < 16) {
|
|
hotk->brightness = (event & ~((u32) BR_UP));
|
|
} else if ((event & ~((u32) BR_DOWN)) < 16 ) {
|
|
hotk->brightness = (event & ~((u32) BR_DOWN));
|
|
}
|
|
|
|
acpi_bus_generate_event(hotk->device, event,
|
|
hotk->event_count[event % 128]++);
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* This function is used to initialize the hotk with right values. In this
|
|
* method, we can make all the detection we want, and modify the hotk struct
|
|
*/
|
|
static int __init asus_hotk_get_info(void)
|
|
{
|
|
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
|
|
struct acpi_buffer dsdt = { ACPI_ALLOCATE_BUFFER, NULL };
|
|
union acpi_object *model = NULL;
|
|
int bsts_result;
|
|
acpi_status status;
|
|
|
|
/*
|
|
* Get DSDT headers early enough to allow for differentiating between
|
|
* models, but late enough to allow acpi_bus_register_driver() to fail
|
|
* before doing anything ACPI-specific. Should we encounter a machine,
|
|
* which needs special handling (i.e. its hotkey device has a different
|
|
* HID), this bit will be moved. A global variable asus_info contains
|
|
* the DSDT header.
|
|
*/
|
|
status = acpi_get_table(ACPI_TABLE_DSDT, 1, &dsdt);
|
|
if (ACPI_FAILURE(status))
|
|
printk(KERN_WARNING " Couldn't get the DSDT table header\n");
|
|
else
|
|
asus_info = (struct acpi_table_header *) dsdt.pointer;
|
|
|
|
/* We have to write 0 on init this far for all ASUS models */
|
|
if (!write_acpi_int(hotk->handle, "INIT", 0, &buffer)) {
|
|
printk(KERN_ERR " Hotkey initialization failed\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* This needs to be called for some laptops to init properly */
|
|
if (!read_acpi_int(hotk->handle, "BSTS", &bsts_result))
|
|
printk(KERN_WARNING " Error calling BSTS\n");
|
|
else if (bsts_result)
|
|
printk(KERN_NOTICE " BSTS called, 0x%02x returned\n", bsts_result);
|
|
|
|
/* Samsung P30 has a device with a valid _HID whose INIT does not
|
|
* return anything. Catch this one and any similar here */
|
|
if (buffer.pointer == NULL) {
|
|
if (asus_info && /* Samsung P30 */
|
|
strncmp(asus_info->oem_table_id, "ODEM", 4) == 0) {
|
|
hotk->model = P30;
|
|
printk(KERN_NOTICE " Samsung P30 detected, supported\n");
|
|
} else {
|
|
hotk->model = M2E;
|
|
printk(KERN_WARNING " no string returned by INIT\n");
|
|
printk(KERN_WARNING " trying default values, supply "
|
|
"the developers with your DSDT\n");
|
|
}
|
|
hotk->methods = &model_conf[hotk->model];
|
|
return AE_OK;
|
|
}
|
|
|
|
model = (union acpi_object *) buffer.pointer;
|
|
if (model->type == ACPI_TYPE_STRING) {
|
|
printk(KERN_NOTICE " %s model detected, ", model->string.pointer);
|
|
}
|
|
|
|
hotk->model = END_MODEL;
|
|
if (strncmp(model->string.pointer, "L3D", 3) == 0)
|
|
hotk->model = L3D;
|
|
else if (strncmp(model->string.pointer, "L3H", 3) == 0 ||
|
|
strncmp(model->string.pointer, "L2E", 3) == 0)
|
|
hotk->model = L3H;
|
|
else if (strncmp(model->string.pointer, "L3", 2) == 0 ||
|
|
strncmp(model->string.pointer, "L2B", 3) == 0)
|
|
hotk->model = L3C;
|
|
else if (strncmp(model->string.pointer, "L8L", 3) == 0)
|
|
hotk->model = L8L;
|
|
else if (strncmp(model->string.pointer, "L4R", 3) == 0)
|
|
hotk->model = L4R;
|
|
else if (strncmp(model->string.pointer, "M6N", 3) == 0)
|
|
hotk->model = M6N;
|
|
else if (strncmp(model->string.pointer, "M6R", 3) == 0)
|
|
hotk->model = M6R;
|
|
else if (strncmp(model->string.pointer, "M2N", 3) == 0 ||
|
|
strncmp(model->string.pointer, "M3N", 3) == 0 ||
|
|
strncmp(model->string.pointer, "M5N", 3) == 0 ||
|
|
strncmp(model->string.pointer, "M6N", 3) == 0 ||
|
|
strncmp(model->string.pointer, "S1N", 3) == 0 ||
|
|
strncmp(model->string.pointer, "S5N", 3) == 0 ||
|
|
strncmp(model->string.pointer, "W1N", 3) == 0)
|
|
hotk->model = xxN;
|
|
else if (strncmp(model->string.pointer, "M1", 2) == 0)
|
|
hotk->model = M1A;
|
|
else if (strncmp(model->string.pointer, "M2", 2) == 0 ||
|
|
strncmp(model->string.pointer, "L4E", 3) == 0)
|
|
hotk->model = M2E;
|
|
else if (strncmp(model->string.pointer, "L2", 2) == 0)
|
|
hotk->model = L2D;
|
|
else if (strncmp(model->string.pointer, "L8", 2) == 0)
|
|
hotk->model = S1x;
|
|
else if (strncmp(model->string.pointer, "D1", 2) == 0)
|
|
hotk->model = D1x;
|
|
else if (strncmp(model->string.pointer, "A1", 2) == 0)
|
|
hotk->model = A1x;
|
|
else if (strncmp(model->string.pointer, "A2", 2) == 0)
|
|
hotk->model = A2x;
|
|
else if (strncmp(model->string.pointer, "J1", 2) == 0)
|
|
hotk->model = S2x;
|
|
else if (strncmp(model->string.pointer, "L5", 2) == 0)
|
|
hotk->model = L5x;
|
|
|
|
if (hotk->model == END_MODEL) {
|
|
printk("unsupported, trying default values, supply the "
|
|
"developers with your DSDT\n");
|
|
hotk->model = M2E;
|
|
} else {
|
|
printk("supported\n");
|
|
}
|
|
|
|
hotk->methods = &model_conf[hotk->model];
|
|
|
|
/* Sort of per-model blacklist */
|
|
if (strncmp(model->string.pointer, "L2B", 3) == 0)
|
|
hotk->methods->lcd_status = NULL;
|
|
/* L2B is similar enough to L3C to use its settings, with this only
|
|
exception */
|
|
else if (strncmp(model->string.pointer, "S5N", 3) == 0 ||
|
|
strncmp(model->string.pointer, "M5N", 3) == 0)
|
|
hotk->methods->mt_mled = NULL;
|
|
/* S5N and M5N have no MLED */
|
|
else if (strncmp(model->string.pointer, "M2N", 3) == 0 ||
|
|
strncmp(model->string.pointer, "W1N", 3) == 0)
|
|
hotk->methods->mt_wled = "WLED";
|
|
/* M2N and W1N have a usable WLED */
|
|
else if (asus_info) {
|
|
if (strncmp(asus_info->oem_table_id, "L1", 2) == 0)
|
|
hotk->methods->mled_status = NULL;
|
|
/* S1300A reports L84F, but L1400B too, account for that */
|
|
}
|
|
|
|
acpi_os_free(model);
|
|
|
|
return AE_OK;
|
|
}
|
|
|
|
|
|
static int __init asus_hotk_check(void)
|
|
{
|
|
int result = 0;
|
|
|
|
result = acpi_bus_get_status(hotk->device);
|
|
if (result)
|
|
return result;
|
|
|
|
if (hotk->device->status.present) {
|
|
result = asus_hotk_get_info();
|
|
} else {
|
|
printk(KERN_ERR " Hotkey device not present, aborting\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
static int __init asus_hotk_add(struct acpi_device *device)
|
|
{
|
|
acpi_status status = AE_OK;
|
|
int result;
|
|
|
|
if (!device)
|
|
return -EINVAL;
|
|
|
|
printk(KERN_NOTICE "Asus Laptop ACPI Extras version %s\n",
|
|
ASUS_ACPI_VERSION);
|
|
|
|
hotk =
|
|
(struct asus_hotk *) kmalloc(sizeof(struct asus_hotk), GFP_KERNEL);
|
|
if (!hotk)
|
|
return -ENOMEM;
|
|
memset(hotk, 0, sizeof(struct asus_hotk));
|
|
|
|
hotk->handle = device->handle;
|
|
strcpy(acpi_device_name(device), ACPI_HOTK_DEVICE_NAME);
|
|
strcpy(acpi_device_class(device), ACPI_HOTK_CLASS);
|
|
acpi_driver_data(device) = hotk;
|
|
hotk->device = device;
|
|
|
|
|
|
result = asus_hotk_check();
|
|
if (result)
|
|
goto end;
|
|
|
|
result = asus_hotk_add_fs(device);
|
|
if (result)
|
|
goto end;
|
|
|
|
/*
|
|
* We install the handler, it will receive the hotk in parameter, so, we
|
|
* could add other data to the hotk struct
|
|
*/
|
|
status = acpi_install_notify_handler(hotk->handle, ACPI_SYSTEM_NOTIFY,
|
|
asus_hotk_notify, hotk);
|
|
if (ACPI_FAILURE(status))
|
|
printk(KERN_ERR " Error installing notify handler\n");
|
|
|
|
/* For laptops without GPLV: init the hotk->brightness value */
|
|
if ((!hotk->methods->brightness_get) && (!hotk->methods->brightness_status) &&
|
|
(hotk->methods->brightness_up && hotk->methods->brightness_down)) {
|
|
status = acpi_evaluate_object(NULL, hotk->methods->brightness_down,
|
|
NULL, NULL);
|
|
if (ACPI_FAILURE(status))
|
|
printk(KERN_WARNING " Error changing brightness\n");
|
|
else {
|
|
status = acpi_evaluate_object(NULL, hotk->methods->brightness_up,
|
|
NULL, NULL);
|
|
if (ACPI_FAILURE(status))
|
|
printk(KERN_WARNING " Strange, error changing"
|
|
" brightness\n");
|
|
}
|
|
}
|
|
|
|
end:
|
|
if (result) {
|
|
kfree(hotk);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
static int asus_hotk_remove(struct acpi_device *device, int type)
|
|
{
|
|
acpi_status status = 0;
|
|
|
|
if (!device || !acpi_driver_data(device))
|
|
return -EINVAL;
|
|
|
|
status = acpi_remove_notify_handler(hotk->handle, ACPI_SYSTEM_NOTIFY,
|
|
asus_hotk_notify);
|
|
if (ACPI_FAILURE(status))
|
|
printk(KERN_ERR "Asus ACPI: Error removing notify handler\n");
|
|
|
|
asus_hotk_remove_fs(device);
|
|
|
|
kfree(hotk);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int __init asus_acpi_init(void)
|
|
{
|
|
int result;
|
|
|
|
if (acpi_disabled)
|
|
return -ENODEV;
|
|
|
|
asus_proc_dir = proc_mkdir(PROC_ASUS, acpi_root_dir);
|
|
if (!asus_proc_dir) {
|
|
printk(KERN_ERR "Asus ACPI: Unable to create /proc entry\n");
|
|
return -ENODEV;
|
|
}
|
|
asus_proc_dir->owner = THIS_MODULE;
|
|
|
|
result = acpi_bus_register_driver(&asus_hotk_driver);
|
|
if (result < 1) {
|
|
acpi_bus_unregister_driver(&asus_hotk_driver);
|
|
remove_proc_entry(PROC_ASUS, acpi_root_dir);
|
|
return -ENODEV;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static void __exit asus_acpi_exit(void)
|
|
{
|
|
acpi_bus_unregister_driver(&asus_hotk_driver);
|
|
remove_proc_entry(PROC_ASUS, acpi_root_dir);
|
|
|
|
acpi_os_free(asus_info);
|
|
|
|
return;
|
|
}
|
|
|
|
module_init(asus_acpi_init);
|
|
module_exit(asus_acpi_exit);
|