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Commit 392cacf2 authored by Nikita Kravets's avatar Nikita Kravets Committed by Hans de Goede
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platform/x86: Add new msi-ec driver 

Add a new driver to allow various MSI laptops' functionalities to be
controlled from userspace. This includes such features as power
profiles (aka shift modes), fan speed, charge thresholds, LEDs, etc.

This driver contains EC memory configurations for different firmware
versions and exports battery charge thresholds to userspace (note,
that start and end thresholds control the same EC parameter
and are always 10% apart).

Link: https://github.com/BeardOverflow/msi-ec/
Link: https://github.com/BeardOverflow/msi-ec/pull/13
Cc: Aakash Singh <mail@singhaakash.dev>
Cc: Jose Angel Pastrana <japp0005@red.ujaen.es>
Signed-off-by: default avatarNikita Kravets <teackot@gmail.com>
Link: https://lore.kernel.org/r/20230320225509.3559-1-teackot@gmail.comReviewed-by: default avatarHans de Goede <hdegoede@redhat.com>
Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
parent fd5aadaa
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MAINTAINERS
View file @ 392cacf2
......@@ -14138,6 +14138,13 @@ S: Odd Fixes
F: Documentation/devicetree/bindings/net/ieee802154/mrf24j40.txt
F: drivers/net/ieee802154/mrf24j40.c
MSI EC DRIVER
M: Nikita Kravets <teackot@gmail.com>
L: platform-driver-x86@vger.kernel.org
S: Maintained
W: https://github.com/BeardOverflow/msi-ec
F: drivers/platform/x86/msi-ec.*
MSI LAPTOP SUPPORT
M: "Lee, Chun-Yi" <jlee@suse.com>
L: platform-driver-x86@vger.kernel.org
......
drivers/platform/x86/Kconfig
View file @ 392cacf2
......@@ -635,6 +635,14 @@ config THINKPAD_LMI
source "drivers/platform/x86/intel/Kconfig"
config MSI_EC
tristate "MSI EC Extras"
depends on ACPI
depends on ACPI_BATTERY
help
This driver allows various MSI laptops' functionalities to be
controlled from userspace, including battery charge threshold.
config MSI_LAPTOP
tristate "MSI Laptop Extras"
depends on ACPI
......
drivers/platform/x86/Makefile
View file @ 392cacf2
......@@ -70,6 +70,7 @@ obj-$(CONFIG_THINKPAD_LMI) += think-lmi.o
obj-y += intel/
# MSI
obj-$(CONFIG_MSI_EC) += msi-ec.o
obj-$(CONFIG_MSI_LAPTOP) += msi-laptop.o
obj-$(CONFIG_MSI_WMI) += msi-wmi.o
......
drivers/platform/x86/msi-ec.c 0 → 100644
View file @ 392cacf2
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* msi-ec: MSI laptops' embedded controller driver.
*
* This driver allows various MSI laptops' functionalities to be
* controlled from userspace.
*
* It contains EC memory configurations for different firmware versions
* and exports battery charge thresholds to userspace.
*
* Copyright (C) 2023 Jose Angel Pastrana <japp0005@red.ujaen.es>
* Copyright (C) 2023 Aakash Singh <mail@singhaakash.dev>
* Copyright (C) 2023 Nikita Kravets <teackot@gmail.com>
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include "msi-ec.h"
#include <acpi/battery.h>
#include <linux/acpi.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/seq_file.h>
#include <linux/string.h>
static const char *const SM_ECO_NAME = "eco";
static const char *const SM_COMFORT_NAME = "comfort";
static const char *const SM_SPORT_NAME = "sport";
static const char *const SM_TURBO_NAME = "turbo";
static const char *const FM_AUTO_NAME = "auto";
static const char *const FM_SILENT_NAME = "silent";
static const char *const FM_BASIC_NAME = "basic";
static const char *const FM_ADVANCED_NAME = "advanced";
static const char * const ALLOWED_FW_0[] __initconst = {
"14C1EMS1.012",
"14C1EMS1.101",
"14C1EMS1.102",
NULL
};
static struct msi_ec_conf CONF0 __initdata = {
.allowed_fw = ALLOWED_FW_0,
.charge_control = {
.address = 0xef,
.offset_start = 0x8a,
.offset_end = 0x80,
.range_min = 0x8a,
.range_max = 0xe4,
},
.webcam = {
.address = 0x2e,
.block_address = 0x2f,
.bit = 1,
},
.fn_super_swap = {
.address = 0xbf,
.bit = 4,
},
.cooler_boost = {
.address = 0x98,
.bit = 7,
},
.shift_mode = {
.address = 0xf2,
.modes = {
{ SM_ECO_NAME, 0xc2 },
{ SM_COMFORT_NAME, 0xc1 },
{ SM_SPORT_NAME, 0xc0 },
MSI_EC_MODE_NULL
},
},
.super_battery = {
.address = MSI_EC_ADDR_UNKNOWN, // 0xd5 needs testing
},
.fan_mode = {
.address = 0xf4,
.modes = {
{ FM_AUTO_NAME, 0x0d },
{ FM_SILENT_NAME, 0x1d },
{ FM_BASIC_NAME, 0x4d },
{ FM_ADVANCED_NAME, 0x8d },
MSI_EC_MODE_NULL
},
},
.cpu = {
.rt_temp_address = 0x68,
.rt_fan_speed_address = 0x71,
.rt_fan_speed_base_min = 0x19,
.rt_fan_speed_base_max = 0x37,
.bs_fan_speed_address = 0x89,
.bs_fan_speed_base_min = 0x00,
.bs_fan_speed_base_max = 0x0f,
},
.gpu = {
.rt_temp_address = 0x80,
.rt_fan_speed_address = 0x89,
},
.leds = {
.micmute_led_address = 0x2b,
.mute_led_address = 0x2c,
.bit = 2,
},
.kbd_bl = {
.bl_mode_address = 0x2c, // ?
.bl_modes = { 0x00, 0x08 }, // ?
.max_mode = 1, // ?
.bl_state_address = 0xf3,
.state_base_value = 0x80,
.max_state = 3,
},
};
static const char * const ALLOWED_FW_1[] __initconst = {
"17F2EMS1.103",
"17F2EMS1.104",
"17F2EMS1.106",
"17F2EMS1.107",
NULL
};
static struct msi_ec_conf CONF1 __initdata = {
.allowed_fw = ALLOWED_FW_1,
.charge_control = {
.address = 0xef,
.offset_start = 0x8a,
.offset_end = 0x80,
.range_min = 0x8a,
.range_max = 0xe4,
},
.webcam = {
.address = 0x2e,
.block_address = 0x2f,
.bit = 1,
},
.fn_super_swap = {
.address = 0xbf,
.bit = 4,
},
.cooler_boost = {
.address = 0x98,
.bit = 7,
},
.shift_mode = {
.address = 0xf2,
.modes = {
{ SM_ECO_NAME, 0xc2 },
{ SM_COMFORT_NAME, 0xc1 },
{ SM_SPORT_NAME, 0xc0 },
{ SM_TURBO_NAME, 0xc4 },
MSI_EC_MODE_NULL
},
},
.super_battery = {
.address = MSI_EC_ADDR_UNKNOWN,
},
.fan_mode = {
.address = 0xf4,
.modes = {
{ FM_AUTO_NAME, 0x0d },
{ FM_BASIC_NAME, 0x4d },
{ FM_ADVANCED_NAME, 0x8d },
MSI_EC_MODE_NULL
},
},
.cpu = {
.rt_temp_address = 0x68,
.rt_fan_speed_address = 0x71,
.rt_fan_speed_base_min = 0x19,
.rt_fan_speed_base_max = 0x37,
.bs_fan_speed_address = 0x89,
.bs_fan_speed_base_min = 0x00,
.bs_fan_speed_base_max = 0x0f,
},
.gpu = {
.rt_temp_address = 0x80,
.rt_fan_speed_address = 0x89,
},
.leds = {
.micmute_led_address = 0x2b,
.mute_led_address = 0x2c,
.bit = 2,
},
.kbd_bl = {
.bl_mode_address = 0x2c, // ?
.bl_modes = { 0x00, 0x08 }, // ?
.max_mode = 1, // ?
.bl_state_address = 0xf3,
.state_base_value = 0x80,
.max_state = 3,
},
};
static const char * const ALLOWED_FW_2[] __initconst = {
"1552EMS1.118",
NULL
};
static struct msi_ec_conf CONF2 __initdata = {
.allowed_fw = ALLOWED_FW_2,
.charge_control = {
.address = 0xd7,
.offset_start = 0x8a,
.offset_end = 0x80,
.range_min = 0x8a,
.range_max = 0xe4,
},
.webcam = {
.address = 0x2e,
.block_address = 0x2f,
.bit = 1,
},
.fn_super_swap = {
.address = 0xe8,
.bit = 4,
},
.cooler_boost = {
.address = 0x98,
.bit = 7,
},
.shift_mode = {
.address = 0xf2,
.modes = {
{ SM_ECO_NAME, 0xc2 },
{ SM_COMFORT_NAME, 0xc1 },
{ SM_SPORT_NAME, 0xc0 },
MSI_EC_MODE_NULL
},
},
.super_battery = {
.address = 0xeb,
.mask = 0x0f,
},
.fan_mode = {
.address = 0xd4,
.modes = {
{ FM_AUTO_NAME, 0x0d },
{ FM_SILENT_NAME, 0x1d },
{ FM_BASIC_NAME, 0x4d },
{ FM_ADVANCED_NAME, 0x8d },
MSI_EC_MODE_NULL
},
},
.cpu = {
.rt_temp_address = 0x68,
.rt_fan_speed_address = 0x71,
.rt_fan_speed_base_min = 0x19,
.rt_fan_speed_base_max = 0x37,
.bs_fan_speed_address = 0x89,
.bs_fan_speed_base_min = 0x00,
.bs_fan_speed_base_max = 0x0f,
},
.gpu = {
.rt_temp_address = 0x80,
.rt_fan_speed_address = 0x89,
},
.leds = {
.micmute_led_address = 0x2c,
.mute_led_address = 0x2d,
.bit = 1,
},
.kbd_bl = {
.bl_mode_address = 0x2c, // ?
.bl_modes = { 0x00, 0x08 }, // ?
.max_mode = 1, // ?
.bl_state_address = 0xd3,
.state_base_value = 0x80,
.max_state = 3,
},
};
static const char * const ALLOWED_FW_3[] __initconst = {
"1592EMS1.111",
"E1592IMS.10C",
NULL
};
static struct msi_ec_conf CONF3 __initdata = {
.allowed_fw = ALLOWED_FW_3,
.charge_control = {
.address = 0xef,
.offset_start = 0x8a,
.offset_end = 0x80,
.range_min = 0x8a,
.range_max = 0xe4,
},
.webcam = {
.address = 0x2e,
.block_address = 0x2f,
.bit = 1,
},
.fn_super_swap = {
.address = 0xe8,
.bit = 4,
},
.cooler_boost = {
.address = 0x98,
.bit = 7,
},
.shift_mode = {
.address = 0xd2,
.modes = {
{ SM_ECO_NAME, 0xc2 },
{ SM_COMFORT_NAME, 0xc1 },
{ SM_SPORT_NAME, 0xc0 },
MSI_EC_MODE_NULL
},
},
.super_battery = {
.address = 0xeb,
.mask = 0x0f,
},
.fan_mode = {
.address = 0xd4,
.modes = {
{ FM_AUTO_NAME, 0x0d },
{ FM_SILENT_NAME, 0x1d },
{ FM_BASIC_NAME, 0x4d },
{ FM_ADVANCED_NAME, 0x8d },
MSI_EC_MODE_NULL
},
},
.cpu = {
.rt_temp_address = 0x68,
.rt_fan_speed_address = 0xc9,
.rt_fan_speed_base_min = 0x19,
.rt_fan_speed_base_max = 0x37,
.bs_fan_speed_address = 0x89, // ?
.bs_fan_speed_base_min = 0x00,
.bs_fan_speed_base_max = 0x0f,
},
.gpu = {
.rt_temp_address = 0x80,
.rt_fan_speed_address = 0x89,
},
.leds = {
.micmute_led_address = 0x2b,
.mute_led_address = 0x2c,
.bit = 1,
},
.kbd_bl = {
.bl_mode_address = 0x2c, // ?
.bl_modes = { 0x00, 0x08 }, // ?
.max_mode = 1, // ?
.bl_state_address = 0xd3,
.state_base_value = 0x80,
.max_state = 3,
},
};
static const char * const ALLOWED_FW_4[] __initconst = {
"16V4EMS1.114",
NULL
};
static struct msi_ec_conf CONF4 __initdata = {
.allowed_fw = ALLOWED_FW_4,
.charge_control = {
.address = 0xd7,
.offset_start = 0x8a,
.offset_end = 0x80,
.range_min = 0x8a,
.range_max = 0xe4,
},
.webcam = {
.address = 0x2e,
.block_address = 0x2f,
.bit = 1,
},
.fn_super_swap = {
.address = MSI_EC_ADDR_UNKNOWN, // supported, but unknown
.bit = 4,
},
.cooler_boost = {
.address = 0x98,
.bit = 7,
},
.shift_mode = {
.address = 0xd2,
.modes = {
{ SM_ECO_NAME, 0xc2 },
{ SM_COMFORT_NAME, 0xc1 },
{ SM_SPORT_NAME, 0xc0 },
MSI_EC_MODE_NULL
},
},
.super_battery = { // may be supported, but address is unknown
.address = MSI_EC_ADDR_UNKNOWN,
.mask = 0x0f,
},
.fan_mode = {
.address = 0xd4,
.modes = {
{ FM_AUTO_NAME, 0x0d },
{ FM_SILENT_NAME, 0x1d },
{ FM_ADVANCED_NAME, 0x8d },
MSI_EC_MODE_NULL
},
},
.cpu = {
.rt_temp_address = 0x68, // needs testing
.rt_fan_speed_address = 0x71, // needs testing
.rt_fan_speed_base_min = 0x19,
.rt_fan_speed_base_max = 0x37,
.bs_fan_speed_address = MSI_EC_ADDR_UNKNOWN,
.bs_fan_speed_base_min = 0x00,
.bs_fan_speed_base_max = 0x0f,
},
.gpu = {
.rt_temp_address = 0x80,
.rt_fan_speed_address = MSI_EC_ADDR_UNKNOWN,
},
.leds = {
.micmute_led_address = MSI_EC_ADDR_UNKNOWN,
.mute_led_address = MSI_EC_ADDR_UNKNOWN,
.bit = 1,
},
.kbd_bl = {
.bl_mode_address = MSI_EC_ADDR_UNKNOWN, // ?
.bl_modes = { 0x00, 0x08 }, // ?
.max_mode = 1, // ?
.bl_state_address = MSI_EC_ADDR_UNSUPP, // 0xd3, not functional
.state_base_value = 0x80,
.max_state = 3,
},
};
static const char * const ALLOWED_FW_5[] __initconst = {
"158LEMS1.103",
"158LEMS1.105",
"158LEMS1.106",
NULL
};
static struct msi_ec_conf CONF5 __initdata = {
.allowed_fw = ALLOWED_FW_5,
.charge_control = {
.address = 0xef,
.offset_start = 0x8a,
.offset_end = 0x80,
.range_min = 0x8a,
.range_max = 0xe4,
},
.webcam = {
.address = 0x2e,
.block_address = 0x2f,
.bit = 1,
},
.fn_super_swap = { // todo: reverse
.address = 0xbf,
.bit = 4,
},
.cooler_boost = {
.address = 0x98,
.bit = 7,
},
.shift_mode = {
.address = 0xf2,
.modes = {
{ SM_ECO_NAME, 0xc2 },
{ SM_COMFORT_NAME, 0xc1 },
{ SM_TURBO_NAME, 0xc4 },
MSI_EC_MODE_NULL
},
},
.super_battery = { // unsupported?
.address = MSI_EC_ADDR_UNKNOWN,
.mask = 0x0f,
},
.fan_mode = {
.address = 0xf4,
.modes = {
{ FM_AUTO_NAME, 0x0d },
{ FM_SILENT_NAME, 0x1d },
{ FM_ADVANCED_NAME, 0x8d },
MSI_EC_MODE_NULL
},
},
.cpu = {
.rt_temp_address = 0x68, // needs testing
.rt_fan_speed_address = 0x71, // needs testing
.rt_fan_speed_base_min = 0x19,
.rt_fan_speed_base_max = 0x37,
.bs_fan_speed_address = MSI_EC_ADDR_UNSUPP,
.bs_fan_speed_base_min = 0x00,
.bs_fan_speed_base_max = 0x0f,
},
.gpu = {
.rt_temp_address = MSI_EC_ADDR_UNKNOWN,
.rt_fan_speed_address = MSI_EC_ADDR_UNKNOWN,
},
.leds = {
.micmute_led_address = 0x2b,
.mute_led_address = 0x2c,
.bit = 2,
},
.kbd_bl = {
.bl_mode_address = MSI_EC_ADDR_UNKNOWN, // ?
.bl_modes = { 0x00, 0x08 }, // ?
.max_mode = 1, // ?
.bl_state_address = MSI_EC_ADDR_UNSUPP, // 0xf3, not functional
.state_base_value = 0x80,
.max_state = 3,
},
};
static const char * const ALLOWED_FW_6[] __initconst = {
"1542EMS1.102",
"1542EMS1.104",
NULL
};
static struct msi_ec_conf CONF6 __initdata = {
.allowed_fw = ALLOWED_FW_6,
.charge_control = {
.address = 0xef,
.offset_start = 0x8a,
.offset_end = 0x80,
.range_min = 0x8a,
.range_max = 0xe4,
},
.webcam = {
.address = 0x2e,
.block_address = MSI_EC_ADDR_UNSUPP,
.bit = 1,
},
.fn_super_swap = {
.address = 0xbf, // todo: reverse
.bit = 4,
},
.cooler_boost = {
.address = 0x98,
.bit = 7,
},
.shift_mode = {
.address = 0xf2,
.modes = {
{ SM_ECO_NAME, 0xc2 },
{ SM_COMFORT_NAME, 0xc1 },
{ SM_SPORT_NAME, 0xc0 },
{ SM_TURBO_NAME, 0xc4 },
MSI_EC_MODE_NULL
},
},
.super_battery = {
.address = 0xd5,
.mask = 0x0f,
},
.fan_mode = {
.address = 0xf4,
.modes = {
{ FM_AUTO_NAME, 0x0d },
{ FM_SILENT_NAME, 0x1d },
{ FM_ADVANCED_NAME, 0x8d },
MSI_EC_MODE_NULL
},
},
.cpu = {
.rt_temp_address = 0x68,
.rt_fan_speed_address = 0xc9,
.rt_fan_speed_base_min = 0x19,
.rt_fan_speed_base_max = 0x37,
.bs_fan_speed_address = MSI_EC_ADDR_UNSUPP,
.bs_fan_speed_base_min = 0x00,
.bs_fan_speed_base_max = 0x0f,
},
.gpu = {
.rt_temp_address = 0x80,
.rt_fan_speed_address = MSI_EC_ADDR_UNKNOWN,
},
.leds = {
.micmute_led_address = MSI_EC_ADDR_UNSUPP,
.mute_led_address = MSI_EC_ADDR_UNSUPP,
.bit = 2,
},
.kbd_bl = {
.bl_mode_address = MSI_EC_ADDR_UNKNOWN, // ?
.bl_modes = { 0x00, 0x08 }, // ?
.max_mode = 1, // ?
.bl_state_address = MSI_EC_ADDR_UNSUPP, // 0xf3, not functional
.state_base_value = 0x80,
.max_state = 3,
},
};
static const char * const ALLOWED_FW_7[] __initconst = {
"17FKEMS1.108",
"17FKEMS1.109",
"17FKEMS1.10A",
NULL
};
static struct msi_ec_conf CONF7 __initdata = {
.allowed_fw = ALLOWED_FW_7,
.charge_control = {
.address = 0xef,
.offset_start = 0x8a,
.offset_end = 0x80,
.range_min = 0x8a,
.range_max = 0xe4,
},
.webcam = {
.address = 0x2e,
.block_address = MSI_EC_ADDR_UNSUPP,
.bit = 1,
},
.fn_super_swap = {
.address = 0xbf, // needs testing
.bit = 4,
},
.cooler_boost = {
.address = 0x98,
.bit = 7,
},
.shift_mode = {
.address = 0xf2,
.modes = {
{ SM_ECO_NAME, 0xc2 },
{ SM_COMFORT_NAME, 0xc1 },
{ SM_SPORT_NAME, 0xc0 },
{ SM_TURBO_NAME, 0xc4 },
MSI_EC_MODE_NULL
},
},
.super_battery = {
.address = MSI_EC_ADDR_UNKNOWN, // 0xd5 but has its own wet of modes
.mask = 0x0f,
},
.fan_mode = {
.address = 0xf4,
.modes = {
{ FM_AUTO_NAME, 0x0d }, // d may not be relevant
{ FM_SILENT_NAME, 0x1d },
{ FM_ADVANCED_NAME, 0x8d },
MSI_EC_MODE_NULL
},
},
.cpu = {
.rt_temp_address = 0x68,
.rt_fan_speed_address = 0xc9, // needs testing
.rt_fan_speed_base_min = 0x19,
.rt_fan_speed_base_max = 0x37,
.bs_fan_speed_address = MSI_EC_ADDR_UNSUPP,
.bs_fan_speed_base_min = 0x00,
.bs_fan_speed_base_max = 0x0f,
},
.gpu = {
.rt_temp_address = MSI_EC_ADDR_UNKNOWN,
.rt_fan_speed_address = MSI_EC_ADDR_UNKNOWN,
},
.leds = {
.micmute_led_address = MSI_EC_ADDR_UNSUPP,
.mute_led_address = 0x2c,
.bit = 2,
},
.kbd_bl = {
.bl_mode_address = MSI_EC_ADDR_UNKNOWN, // ?
.bl_modes = { 0x00, 0x08 }, // ?
.max_mode = 1, // ?
.bl_state_address = 0xf3,
.state_base_value = 0x80,
.max_state = 3,
},
};
static struct msi_ec_conf *CONFIGS[] __initdata = {
&CONF0,
&CONF1,
&CONF2,
&CONF3,
&CONF4,
&CONF5,
&CONF6,
&CONF7,
NULL
};
static struct msi_ec_conf conf; // current configuration
/*
* Helper functions
*/
static int ec_read_seq(u8 addr, u8 *buf, u8 len)
{
int result;
for (u8 i = 0; i < len; i++) {
result = ec_read(addr + i, buf + i);
if (result < 0)
return result;
}
return 0;
}
static int ec_get_firmware_version(u8 buf[MSI_EC_FW_VERSION_LENGTH + 1])
{
int result;
memset(buf, 0, MSI_EC_FW_VERSION_LENGTH + 1);
result = ec_read_seq(MSI_EC_FW_VERSION_ADDRESS,
buf,
MSI_EC_FW_VERSION_LENGTH);
if (result < 0)
return result;
return MSI_EC_FW_VERSION_LENGTH + 1;
}
/*
* Sysfs power_supply subsystem
*/
static ssize_t charge_control_threshold_show(u8 offset,
struct device *device,
struct device_attribute *attr,
char *buf)
{
u8 rdata;
int result;
result = ec_read(conf.charge_control.address, &rdata);
if (result < 0)
return result;
return sysfs_emit(buf, "%i\n", rdata - offset);
}
static ssize_t charge_control_threshold_store(u8 offset,
struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
u8 wdata;
int result;
result = kstrtou8(buf, 10, &wdata);
if (result < 0)
return result;
wdata += offset;
if (wdata < conf.charge_control.range_min ||
wdata > conf.charge_control.range_max)
return -EINVAL;
result = ec_write(conf.charge_control.address, wdata);
if (result < 0)
return result;
return count;
}
static ssize_t charge_control_start_threshold_show(struct device *device,
struct device_attribute *attr,
char *buf)
{
return charge_control_threshold_show(conf.charge_control.offset_start,
device, attr, buf);
}
static ssize_t charge_control_start_threshold_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
return charge_control_threshold_store(conf.charge_control.offset_start,
dev, attr, buf, count);
}
static ssize_t charge_control_end_threshold_show(struct device *device,
struct device_attribute *attr,
char *buf)
{
return charge_control_threshold_show(conf.charge_control.offset_end,
device, attr, buf);
}
static ssize_t charge_control_end_threshold_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
return charge_control_threshold_store(conf.charge_control.offset_end,
dev, attr, buf, count);
}
static DEVICE_ATTR_RW(charge_control_start_threshold);
static DEVICE_ATTR_RW(charge_control_end_threshold);
static struct attribute *msi_battery_attrs[] = {
&dev_attr_charge_control_start_threshold.attr,
&dev_attr_charge_control_end_threshold.attr,
NULL
};
ATTRIBUTE_GROUPS(msi_battery);
static int msi_battery_add(struct power_supply *battery,
struct acpi_battery_hook *hook)
{
return device_add_groups(&battery->dev, msi_battery_groups);
}
static int msi_battery_remove(struct power_supply *battery,
struct acpi_battery_hook *hook)
{
device_remove_groups(&battery->dev, msi_battery_groups);
return 0;
}
static struct acpi_battery_hook battery_hook = {
.add_battery = msi_battery_add,
.remove_battery = msi_battery_remove,
.name = MSI_EC_DRIVER_NAME,
};
/*
* Module load/unload
*/
static const struct dmi_system_id msi_dmi_table[] __initconst __maybe_unused = {
{
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "MICRO-STAR INT"),
},
},
{
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International"),
},
},
{}
};
MODULE_DEVICE_TABLE(dmi, msi_dmi_table);
static int __init load_configuration(void)
{
int result;
u8 fw_version[MSI_EC_FW_VERSION_LENGTH + 1];
/* get firmware version */
result = ec_get_firmware_version(fw_version);
if (result < 0)
return result;
/* load the suitable configuration, if exists */
for (int i = 0; CONFIGS[i]; i++) {
if (match_string(CONFIGS[i]->allowed_fw, -1, fw_version) != -EINVAL) {
conf = *CONFIGS[i];
conf.allowed_fw = NULL;
return 0;
}
}
/* config not found */
for (int i = 0; i < MSI_EC_FW_VERSION_LENGTH; i++) {
if (!isgraph(fw_version[i])) {
pr_warn("Unable to find a valid firmware version!\n");
return -EOPNOTSUPP;
}
}
pr_warn("Firmware version is not supported: '%s'\n", fw_version);
return -EOPNOTSUPP;
}
static int __init msi_ec_init(void)
{
int result;
result = load_configuration();
if (result < 0)
return result;
battery_hook_register(&battery_hook);
return 0;
}
static void __exit msi_ec_exit(void)
{
battery_hook_unregister(&battery_hook);
}
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Jose Angel Pastrana <japp0005@red.ujaen.es>");
MODULE_AUTHOR("Aakash Singh <mail@singhaakash.dev>");
MODULE_AUTHOR("Nikita Kravets <teackot@gmail.com>");
MODULE_DESCRIPTION("MSI Embedded Controller");
module_init(msi_ec_init);
module_exit(msi_ec_exit);
drivers/platform/x86/msi-ec.h 0 → 100644
View file @ 392cacf2
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* msi-ec: MSI laptops' embedded controller driver.
*
* Copyright (C) 2023 Jose Angel Pastrana <japp0005@red.ujaen.es>
* Copyright (C) 2023 Aakash Singh <mail@singhaakash.dev>
* Copyright (C) 2023 Nikita Kravets <teackot@gmail.com>
*/
#ifndef _MSI_EC_H_
#define _MSI_EC_H_
#include <linux/types.h>
#define MSI_EC_DRIVER_NAME "msi-ec"
#define MSI_EC_ADDR_UNKNOWN 0xff01 // unknown address
#define MSI_EC_ADDR_UNSUPP 0xff01 // unsupported parameter
// Firmware info addresses are universal
#define MSI_EC_FW_VERSION_ADDRESS 0xa0
#define MSI_EC_FW_DATE_ADDRESS 0xac
#define MSI_EC_FW_TIME_ADDRESS 0xb4
#define MSI_EC_FW_VERSION_LENGTH 12
#define MSI_EC_FW_DATE_LENGTH 8
#define MSI_EC_FW_TIME_LENGTH 8
struct msi_ec_charge_control_conf {
int address;
int offset_start;
int offset_end;
int range_min;
int range_max;
};
struct msi_ec_webcam_conf {
int address;
int block_address;
int bit;
};
struct msi_ec_fn_super_swap_conf {
int address;
int bit;
};
struct msi_ec_cooler_boost_conf {
int address;
int bit;
};
#define MSI_EC_MODE_NULL { NULL, 0 }
struct msi_ec_mode {
const char *name;
int value;
};
struct msi_ec_shift_mode_conf {
int address;
struct msi_ec_mode modes[5]; // fixed size for easier hard coding
};
struct msi_ec_super_battery_conf {
int address;
int mask;
};
struct msi_ec_fan_mode_conf {
int address;
struct msi_ec_mode modes[5]; // fixed size for easier hard coding
};
struct msi_ec_cpu_conf {
int rt_temp_address;
int rt_fan_speed_address; // realtime
int rt_fan_speed_base_min;
int rt_fan_speed_base_max;
int bs_fan_speed_address; // basic
int bs_fan_speed_base_min;
int bs_fan_speed_base_max;
};
struct msi_ec_gpu_conf {
int rt_temp_address;
int rt_fan_speed_address; // realtime
};
struct msi_ec_led_conf {
int micmute_led_address;
int mute_led_address;
int bit;
};
#define MSI_EC_KBD_BL_STATE_MASK 0x3
struct msi_ec_kbd_bl_conf {
int bl_mode_address;
int bl_modes[2];
int max_mode;
int bl_state_address;
int state_base_value;
int max_state;
};
struct msi_ec_conf {
const char * const *allowed_fw;
struct msi_ec_charge_control_conf charge_control;
struct msi_ec_webcam_conf webcam;
struct msi_ec_fn_super_swap_conf fn_super_swap;
struct msi_ec_cooler_boost_conf cooler_boost;
struct msi_ec_shift_mode_conf shift_mode;
struct msi_ec_super_battery_conf super_battery;
struct msi_ec_fan_mode_conf fan_mode;
struct msi_ec_cpu_conf cpu;
struct msi_ec_gpu_conf gpu;
struct msi_ec_led_conf leds;
struct msi_ec_kbd_bl_conf kbd_bl;
};
#endif // _MSI_EC_H_
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