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nuc_led.h
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nuc_led.h
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/*
* Intel NUC NUC8i7HVK (Hades) LED Control WMI Driver
*
* Copyright (C) 2020 Benjamin Vialle <[email protected]>
*
* Forked from intel_nuc_led (https://github.com/nomego/intel_nuc_led)
* Copyright (C) 2018 Patrik Kullman
*
* Forked from intel_nuc_led (https://github.com/milesp20/intel_nuc_led)
* Copyright (C) 2017 Miles Peterson
*
* Portions based on asus-wmi.c:
* Copyright (C) 2010 Intel Corporation.
* Copyright (C) 2010-2011 Corentin Chary <[email protected]>
*
* Portions based on acpi_call.c:
* Copyright (C) 2010: Michal Kottman
*
* Based on WMI Interface for Intel® NUC Products - WMI Specification, August 2018 rev 0.64
* (specs/INTEL_WMI_LED_0.64.pdf)
*
* Based on Intel Article ID 000023426
* http://www.intel.com/content/www/us/en/support/boards-and-kits/intel-nuc-kits/000023426.html
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
static unsigned int nuc_led_perms __read_mostly = S_IRUGO | S_IWUSR | S_IWGRP;
static unsigned int nuc_led_uid __read_mostly;
static unsigned int nuc_led_gid __read_mostly;
module_param(nuc_led_perms, uint, S_IRUGO | S_IWUSR | S_IWGRP);
module_param(nuc_led_uid, uint, 0);
module_param(nuc_led_gid, uint, 0);
MODULE_PARM_DESC(nuc_led_perms, "permissions on /proc/acpi/nuc_led");
MODULE_PARM_DESC(nuc_led_uid, "default owner of /proc/acpi/nuc_led");
MODULE_PARM_DESC(nuc_led_gid, "default owning group of /proc/acpi/nuc_led");
/* Intel NUC WMI GUID */
#define NUCLED_WMI_MGMT_GUID "8C5DA44C-CDC3-46B3-8619-4E26D34390B7"
MODULE_ALIAS("wmi:" NUCLED_WMI_MGMT_GUID);
/* LED Control Method ID */
#define NUCLED_WMI_METHODID_GETSTATE 0x01
#define NUCLED_WMI_METHODID_SETSTATE 0x02
#define NUCLED_WMI_METHODID_QUERYLED 0x03
#define NUCLED_WMI_METHODID_NEWGETLEDSTATUS 0x04
#define NUCLED_WMI_METHODID_SETINDICATOROPTIONLEDTYPE 0x05
#define NUCLED_WMI_METHODID_SETVALUEINDICATOROPTIONLEDTYPE 0x06
#define NUCLED_WMI_METHODID_APPNOTIFY 0x07
#define NUCLED_WMI_METHODID_GETHDMIADDR4CEC 0x07
/* NUCLED_WMI_METHODID_QUERYLED arguments */
#define NUCLED_WMI_METHODARG_QUERYLEDCOLORTYPE 0x01
#define NUCLED_WMI_METHODARG_QUERYINDICATORSUPPORT 0x02
/* NUCLED_WMI_METHODID_NEWGETLEDSTATUS arguments */
#define NUCLED_WMI_METHODARG_GETCURRENTINDICATOR 0x00
#define NUCLED_WMI_METHODARG_GETINDICATOROPTIONVALUE 0x01
/* proc interaction */
#define NUCLED_PROC_SET_INDICATOR 0x01
#define NUCLED_PROC_SETINDICATOROPTIONVALUE 0x02
/* Indicator options / usage types */
#define NUCLED_USAGE_TYPE_POWER_STATE 0x00
#define NUCLED_USAGE_TYPE_HDD_ACTIVITY 0x01
#define NUCLED_USAGE_TYPE_ETHERNET 0x02
#define NUCLED_USAGE_TYPE_WIFI 0x03
#define NUCLED_USAGE_TYPE_SOFTWARE 0x04
#define NUCLED_USAGE_TYPE_POWER_LIMIT 0x05
#define NUCLED_USAGE_TYPE_DISABLE 0x06
/* Return codes */
#define NUCLED_WMI_RETURN_SUCCESS 0x00
#define NUCLED_WMI_RETURN_NOSUPPORT 0xE1
#define NUCLED_WMI_RETURN_UNDEFINED 0xE2
#define NUCLED_WMI_RETURN_NORESPONSE 0xE3
#define NUCLED_WMI_RETURN_BADPARAM 0xE4
#define NUCLED_WMI_RETURN_UNEXPECTED 0xEF
typedef union {
u8 flags;
struct {
u8 power : 1,
hdd : 1,
skull : 1,
eyes : 1,
front1 : 1,
front2 : 1,
front3 : 1,
unused0 : 1;
};
} LED_TYPES;
typedef union {
u8 flags;
struct {
u8 blue_amber : 1,
blue_white : 1,
rgb : 1,
unused5 : 1,
unused4 : 1,
unused3 : 1,
unused2 : 1,
unused1 : 1;
};
} LED_COLOR_TYPES;
typedef union {
u8 flags;
struct {
u8 power_state : 1,
hdd_activity : 1,
ethernet : 1,
wifi : 1,
software : 1,
power_limit : 1,
disable : 1,
unused1 : 1;
};
} INDICATOR_OPTIONS;
typedef struct {
u8 red;
u8 green;
u8 blue;
} LED_RGB;
typedef struct {
u8 brightness;
u8 blink_behavior;
u8 blink_freq;
LED_RGB color;
} BLINK_LED;
typedef struct {
u8 brightness;
LED_RGB color;
} FLASH_LED;
struct power_state_indicator {
BLINK_LED s0;
BLINK_LED s3;
BLINK_LED ready_mode;
BLINK_LED s5;
} __packed;
struct hdd_activity_indicator {
FLASH_LED led;
u8 behavior;
} __packed;
struct ethernet_indicator {
u8 type;
FLASH_LED led;
} __packed;
struct wifi_indicator {
FLASH_LED led;
} __packed;
struct software_indicator {
BLINK_LED led;
} __packed;
struct power_limit_indicator {
u8 indication_scheme;
FLASH_LED led;
} __packed;
extern struct proc_dir_entry *acpi_root_dir;
typedef struct {
const char *name;
u8 led_type;
LED_COLOR_TYPES led_color_type;
u8 usage_type;
u8 indicator_option;
u8 *indicator;
} LED_INFO;
struct acpi_args {
u8 arg1;
u8 arg2;
u8 arg3;
u8 arg4;
} __packed;
#define BUFFER_SIZE 4096
static char result_buffer[BUFFER_SIZE];
static char *get_buffer_end(void) {
return result_buffer + strlen(result_buffer);
}
static const char *const led_names[] = {
"Power",
"HDD",
"Skull",
"Eyes",
"Front 1",
"Front 2",
"Front 3",
};
static const char *const led_color_types[] = {"Blue/Amber", "Blue/White", "RGB"};
static const char *const led_usage_types[] = {"Power state", "HDD Activity", "Ethernet", "Wifi", "Software", "Power Limit", "Disable"};
static const char *const led_blink_behaviors[] = {"Solid", "Breathing", "Pulsing", "Strobing"};
static const char *const led_flash_behaviors[] = {"Normally off, ON when active", "Normally on, OFF when active"};
static const char *const led_ethernet_type[] = {"LAN1", "LAN2", "LAN1 + LAN2"};
static const char *const led_power_limit_indication_scheme[] = {"Green to Red", "Single Color"};
/* Convert blink/fade value to text */
static const char *const blink_fade_text[] = {"Off", "1Hz Blink", "0.25Hz Blink", "1Hz Fade", "Always On", "0.5Hz Blink", "0.25Hz Fade", "0.5Hz Fade"};
/* Convert color value to text */
static const char *const pwrcolor_text[] = {"Off", "Blue", "Amber"};
static const char *const ringcolor_text[] = {"Off", "Cyan", "Pink", "Yellow", "Blue", "Red", "Green", "White"};
unsigned int countSetBits(int n)
{
unsigned int count = 0;
while (n) {
n &= (n - 1);
count++;
}
return count;
}
unsigned int bitIndexToIndex(int bitIndex)
{
switch (bitIndex) {
case 1: return 0;
case 2: return 1;
case 4: return 2;
case 8: return 3;
case 16: return 4;
case 32: return 5;
case 64: return 6;
case 128: return 7;
}
return 0;
}