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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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88700d1396
Replace autoloading data based on the ACPI EC device with the DMI
records for motherboards models. The ACPI method created a bug that when
this driver returns error from the probe function because of the
unsupported motherboard model, the ACPI subsystem concludes
that the EC device does not work properly.
Fixes: 5cd2901202
("hwmon: (asus-ec-sensors) introduce ec_board_info struct for board data")
Bug: https://bugzilla.kernel.org/show_bug.cgi?id=216412
Bug: https://bugzilla.redhat.com/show_bug.cgi?id=2121844
Signed-off-by: Eugene Shalygin <eugene.shalygin@gmail.com>
Link: https://lore.kernel.org/r/20220909155654.123398-2-eugene.shalygin@gmail.com
Cc: stable@vger.kernel.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
1040 lines
30 KiB
C
1040 lines
30 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* HWMON driver for ASUS motherboards that publish some sensor values
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* via the embedded controller registers.
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*
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* Copyright (C) 2021 Eugene Shalygin <eugene.shalygin@gmail.com>
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* EC provides:
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* - Chipset temperature
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* - CPU temperature
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* - Motherboard temperature
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* - T_Sensor temperature
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* - VRM temperature
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* - Water In temperature
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* - Water Out temperature
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* - CPU Optional fan RPM
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* - Chipset fan RPM
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* - VRM Heat Sink fan RPM
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* - Water Flow fan RPM
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* - CPU current
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* - CPU core voltage
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*/
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#include <linux/acpi.h>
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#include <linux/bitops.h>
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#include <linux/dev_printk.h>
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#include <linux/dmi.h>
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#include <linux/hwmon.h>
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#include <linux/init.h>
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#include <linux/jiffies.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/sort.h>
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#include <linux/units.h>
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#include <asm/unaligned.h>
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static char *mutex_path_override;
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/* Writing to this EC register switches EC bank */
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#define ASUS_EC_BANK_REGISTER 0xff
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#define SENSOR_LABEL_LEN 16
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/*
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* Arbitrary set max. allowed bank number. Required for sorting banks and
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* currently is overkill with just 2 banks used at max, but for the sake
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* of alignment let's set it to a higher value.
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*/
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#define ASUS_EC_MAX_BANK 3
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#define ACPI_LOCK_DELAY_MS 500
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/* ACPI mutex for locking access to the EC for the firmware */
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#define ASUS_HW_ACCESS_MUTEX_ASMX "\\AMW0.ASMX"
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#define ASUS_HW_ACCESS_MUTEX_RMTW_ASMX "\\RMTW.ASMX"
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#define ASUS_HW_ACCESS_MUTEX_SB_PCI0_SBRG_SIO1_MUT0 "\\_SB_.PCI0.SBRG.SIO1.MUT0"
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#define MAX_IDENTICAL_BOARD_VARIATIONS 3
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/* Moniker for the ACPI global lock (':' is not allowed in ASL identifiers) */
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#define ACPI_GLOBAL_LOCK_PSEUDO_PATH ":GLOBAL_LOCK"
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typedef union {
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u32 value;
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struct {
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u8 index;
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u8 bank;
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u8 size;
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u8 dummy;
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} components;
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} sensor_address;
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#define MAKE_SENSOR_ADDRESS(size, bank, index) { \
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.value = (size << 16) + (bank << 8) + index \
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}
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static u32 hwmon_attributes[hwmon_max] = {
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[hwmon_chip] = HWMON_C_REGISTER_TZ,
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[hwmon_temp] = HWMON_T_INPUT | HWMON_T_LABEL,
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[hwmon_in] = HWMON_I_INPUT | HWMON_I_LABEL,
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[hwmon_curr] = HWMON_C_INPUT | HWMON_C_LABEL,
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[hwmon_fan] = HWMON_F_INPUT | HWMON_F_LABEL,
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};
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struct ec_sensor_info {
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char label[SENSOR_LABEL_LEN];
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enum hwmon_sensor_types type;
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sensor_address addr;
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};
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#define EC_SENSOR(sensor_label, sensor_type, size, bank, index) { \
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.label = sensor_label, .type = sensor_type, \
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.addr = MAKE_SENSOR_ADDRESS(size, bank, index), \
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}
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enum ec_sensors {
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/* chipset temperature [℃] */
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ec_sensor_temp_chipset,
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/* CPU temperature [℃] */
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ec_sensor_temp_cpu,
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/* motherboard temperature [℃] */
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ec_sensor_temp_mb,
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/* "T_Sensor" temperature sensor reading [℃] */
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ec_sensor_temp_t_sensor,
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/* VRM temperature [℃] */
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ec_sensor_temp_vrm,
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/* CPU Core voltage [mV] */
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ec_sensor_in_cpu_core,
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/* CPU_Opt fan [RPM] */
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ec_sensor_fan_cpu_opt,
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/* VRM heat sink fan [RPM] */
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ec_sensor_fan_vrm_hs,
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/* Chipset fan [RPM] */
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ec_sensor_fan_chipset,
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/* Water flow sensor reading [RPM] */
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ec_sensor_fan_water_flow,
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/* CPU current [A] */
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ec_sensor_curr_cpu,
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/* "Water_In" temperature sensor reading [℃] */
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ec_sensor_temp_water_in,
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/* "Water_Out" temperature sensor reading [℃] */
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ec_sensor_temp_water_out,
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/* "Water_Block_In" temperature sensor reading [℃] */
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ec_sensor_temp_water_block_in,
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/* "Water_Block_Out" temperature sensor reading [℃] */
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ec_sensor_temp_water_block_out,
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/* "T_sensor_2" temperature sensor reading [℃] */
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ec_sensor_temp_t_sensor_2,
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/* "Extra_1" temperature sensor reading [℃] */
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ec_sensor_temp_sensor_extra_1,
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/* "Extra_2" temperature sensor reading [℃] */
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ec_sensor_temp_sensor_extra_2,
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/* "Extra_3" temperature sensor reading [℃] */
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ec_sensor_temp_sensor_extra_3,
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};
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#define SENSOR_TEMP_CHIPSET BIT(ec_sensor_temp_chipset)
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#define SENSOR_TEMP_CPU BIT(ec_sensor_temp_cpu)
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#define SENSOR_TEMP_MB BIT(ec_sensor_temp_mb)
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#define SENSOR_TEMP_T_SENSOR BIT(ec_sensor_temp_t_sensor)
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#define SENSOR_TEMP_VRM BIT(ec_sensor_temp_vrm)
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#define SENSOR_IN_CPU_CORE BIT(ec_sensor_in_cpu_core)
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#define SENSOR_FAN_CPU_OPT BIT(ec_sensor_fan_cpu_opt)
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#define SENSOR_FAN_VRM_HS BIT(ec_sensor_fan_vrm_hs)
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#define SENSOR_FAN_CHIPSET BIT(ec_sensor_fan_chipset)
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#define SENSOR_FAN_WATER_FLOW BIT(ec_sensor_fan_water_flow)
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#define SENSOR_CURR_CPU BIT(ec_sensor_curr_cpu)
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#define SENSOR_TEMP_WATER_IN BIT(ec_sensor_temp_water_in)
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#define SENSOR_TEMP_WATER_OUT BIT(ec_sensor_temp_water_out)
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#define SENSOR_TEMP_WATER_BLOCK_IN BIT(ec_sensor_temp_water_block_in)
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#define SENSOR_TEMP_WATER_BLOCK_OUT BIT(ec_sensor_temp_water_block_out)
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#define SENSOR_TEMP_T_SENSOR_2 BIT(ec_sensor_temp_t_sensor_2)
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#define SENSOR_TEMP_SENSOR_EXTRA_1 BIT(ec_sensor_temp_sensor_extra_1)
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#define SENSOR_TEMP_SENSOR_EXTRA_2 BIT(ec_sensor_temp_sensor_extra_2)
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#define SENSOR_TEMP_SENSOR_EXTRA_3 BIT(ec_sensor_temp_sensor_extra_3)
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enum board_family {
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family_unknown,
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family_amd_400_series,
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family_amd_500_series,
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family_intel_300_series,
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family_intel_600_series
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};
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/* All the known sensors for ASUS EC controllers */
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static const struct ec_sensor_info sensors_family_amd_400[] = {
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[ec_sensor_temp_chipset] =
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EC_SENSOR("Chipset", hwmon_temp, 1, 0x00, 0x3a),
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[ec_sensor_temp_cpu] =
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EC_SENSOR("CPU", hwmon_temp, 1, 0x00, 0x3b),
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[ec_sensor_temp_mb] =
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EC_SENSOR("Motherboard", hwmon_temp, 1, 0x00, 0x3c),
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[ec_sensor_temp_t_sensor] =
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EC_SENSOR("T_Sensor", hwmon_temp, 1, 0x00, 0x3d),
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[ec_sensor_temp_vrm] =
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EC_SENSOR("VRM", hwmon_temp, 1, 0x00, 0x3e),
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[ec_sensor_in_cpu_core] =
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EC_SENSOR("CPU Core", hwmon_in, 2, 0x00, 0xa2),
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[ec_sensor_fan_cpu_opt] =
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EC_SENSOR("CPU_Opt", hwmon_fan, 2, 0x00, 0xbc),
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[ec_sensor_fan_vrm_hs] =
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EC_SENSOR("VRM HS", hwmon_fan, 2, 0x00, 0xb2),
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[ec_sensor_fan_chipset] =
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/* no chipset fans in this generation */
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EC_SENSOR("Chipset", hwmon_fan, 0, 0x00, 0x00),
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[ec_sensor_fan_water_flow] =
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EC_SENSOR("Water_Flow", hwmon_fan, 2, 0x00, 0xb4),
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[ec_sensor_curr_cpu] =
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EC_SENSOR("CPU", hwmon_curr, 1, 0x00, 0xf4),
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[ec_sensor_temp_water_in] =
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EC_SENSOR("Water_In", hwmon_temp, 1, 0x01, 0x0d),
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[ec_sensor_temp_water_out] =
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EC_SENSOR("Water_Out", hwmon_temp, 1, 0x01, 0x0b),
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};
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static const struct ec_sensor_info sensors_family_amd_500[] = {
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[ec_sensor_temp_chipset] =
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EC_SENSOR("Chipset", hwmon_temp, 1, 0x00, 0x3a),
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[ec_sensor_temp_cpu] = EC_SENSOR("CPU", hwmon_temp, 1, 0x00, 0x3b),
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[ec_sensor_temp_mb] =
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EC_SENSOR("Motherboard", hwmon_temp, 1, 0x00, 0x3c),
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[ec_sensor_temp_t_sensor] =
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EC_SENSOR("T_Sensor", hwmon_temp, 1, 0x00, 0x3d),
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[ec_sensor_temp_vrm] = EC_SENSOR("VRM", hwmon_temp, 1, 0x00, 0x3e),
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[ec_sensor_in_cpu_core] =
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EC_SENSOR("CPU Core", hwmon_in, 2, 0x00, 0xa2),
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[ec_sensor_fan_cpu_opt] =
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EC_SENSOR("CPU_Opt", hwmon_fan, 2, 0x00, 0xb0),
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[ec_sensor_fan_vrm_hs] = EC_SENSOR("VRM HS", hwmon_fan, 2, 0x00, 0xb2),
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[ec_sensor_fan_chipset] =
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EC_SENSOR("Chipset", hwmon_fan, 2, 0x00, 0xb4),
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[ec_sensor_fan_water_flow] =
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EC_SENSOR("Water_Flow", hwmon_fan, 2, 0x00, 0xbc),
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[ec_sensor_curr_cpu] = EC_SENSOR("CPU", hwmon_curr, 1, 0x00, 0xf4),
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[ec_sensor_temp_water_in] =
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EC_SENSOR("Water_In", hwmon_temp, 1, 0x01, 0x00),
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[ec_sensor_temp_water_out] =
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EC_SENSOR("Water_Out", hwmon_temp, 1, 0x01, 0x01),
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[ec_sensor_temp_water_block_in] =
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EC_SENSOR("Water_Block_In", hwmon_temp, 1, 0x01, 0x02),
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[ec_sensor_temp_water_block_out] =
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EC_SENSOR("Water_Block_Out", hwmon_temp, 1, 0x01, 0x03),
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[ec_sensor_temp_sensor_extra_1] =
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EC_SENSOR("Extra_1", hwmon_temp, 1, 0x01, 0x09),
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[ec_sensor_temp_t_sensor_2] =
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EC_SENSOR("T_sensor_2", hwmon_temp, 1, 0x01, 0x0a),
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[ec_sensor_temp_sensor_extra_2] =
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EC_SENSOR("Extra_2", hwmon_temp, 1, 0x01, 0x0b),
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[ec_sensor_temp_sensor_extra_3] =
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EC_SENSOR("Extra_3", hwmon_temp, 1, 0x01, 0x0c),
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};
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static const struct ec_sensor_info sensors_family_intel_300[] = {
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[ec_sensor_temp_chipset] =
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EC_SENSOR("Chipset", hwmon_temp, 1, 0x00, 0x3a),
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[ec_sensor_temp_cpu] = EC_SENSOR("CPU", hwmon_temp, 1, 0x00, 0x3b),
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[ec_sensor_temp_mb] =
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EC_SENSOR("Motherboard", hwmon_temp, 1, 0x00, 0x3c),
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[ec_sensor_temp_t_sensor] =
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EC_SENSOR("T_Sensor", hwmon_temp, 1, 0x00, 0x3d),
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[ec_sensor_temp_vrm] = EC_SENSOR("VRM", hwmon_temp, 1, 0x00, 0x3e),
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[ec_sensor_fan_cpu_opt] =
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EC_SENSOR("CPU_Opt", hwmon_fan, 2, 0x00, 0xb0),
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[ec_sensor_fan_vrm_hs] = EC_SENSOR("VRM HS", hwmon_fan, 2, 0x00, 0xb2),
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[ec_sensor_fan_water_flow] =
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EC_SENSOR("Water_Flow", hwmon_fan, 2, 0x00, 0xbc),
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[ec_sensor_temp_water_in] =
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EC_SENSOR("Water_In", hwmon_temp, 1, 0x01, 0x00),
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[ec_sensor_temp_water_out] =
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EC_SENSOR("Water_Out", hwmon_temp, 1, 0x01, 0x01),
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};
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static const struct ec_sensor_info sensors_family_intel_600[] = {
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[ec_sensor_temp_t_sensor] =
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EC_SENSOR("T_Sensor", hwmon_temp, 1, 0x00, 0x3d),
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[ec_sensor_temp_vrm] = EC_SENSOR("VRM", hwmon_temp, 1, 0x00, 0x3e),
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};
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/* Shortcuts for common combinations */
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#define SENSOR_SET_TEMP_CHIPSET_CPU_MB \
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(SENSOR_TEMP_CHIPSET | SENSOR_TEMP_CPU | SENSOR_TEMP_MB)
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#define SENSOR_SET_TEMP_WATER (SENSOR_TEMP_WATER_IN | SENSOR_TEMP_WATER_OUT)
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#define SENSOR_SET_WATER_BLOCK \
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(SENSOR_TEMP_WATER_BLOCK_IN | SENSOR_TEMP_WATER_BLOCK_OUT)
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struct ec_board_info {
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unsigned long sensors;
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/*
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* Defines which mutex to use for guarding access to the state and the
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* hardware. Can be either a full path to an AML mutex or the
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* pseudo-path ACPI_GLOBAL_LOCK_PSEUDO_PATH to use the global ACPI lock,
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* or left empty to use a regular mutex object, in which case access to
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* the hardware is not guarded.
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*/
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const char *mutex_path;
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enum board_family family;
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};
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static const struct ec_board_info board_info_prime_x470_pro = {
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.sensors = SENSOR_SET_TEMP_CHIPSET_CPU_MB |
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SENSOR_TEMP_T_SENSOR | SENSOR_TEMP_VRM |
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SENSOR_FAN_CPU_OPT |
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SENSOR_CURR_CPU | SENSOR_IN_CPU_CORE,
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.mutex_path = ACPI_GLOBAL_LOCK_PSEUDO_PATH,
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.family = family_amd_400_series,
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};
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static const struct ec_board_info board_info_prime_x570_pro = {
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.sensors = SENSOR_SET_TEMP_CHIPSET_CPU_MB | SENSOR_TEMP_VRM |
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SENSOR_TEMP_T_SENSOR | SENSOR_FAN_CHIPSET,
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.mutex_path = ASUS_HW_ACCESS_MUTEX_ASMX,
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.family = family_amd_500_series,
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};
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static const struct ec_board_info board_info_pro_art_x570_creator_wifi = {
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.sensors = SENSOR_SET_TEMP_CHIPSET_CPU_MB | SENSOR_TEMP_VRM |
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SENSOR_TEMP_T_SENSOR | SENSOR_FAN_CPU_OPT |
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SENSOR_CURR_CPU | SENSOR_IN_CPU_CORE,
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.family = family_amd_500_series,
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};
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static const struct ec_board_info board_info_pro_ws_x570_ace = {
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.sensors = SENSOR_SET_TEMP_CHIPSET_CPU_MB | SENSOR_TEMP_VRM |
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SENSOR_TEMP_T_SENSOR | SENSOR_FAN_CHIPSET |
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SENSOR_CURR_CPU | SENSOR_IN_CPU_CORE,
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.mutex_path = ASUS_HW_ACCESS_MUTEX_ASMX,
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.family = family_amd_500_series,
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};
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static const struct ec_board_info board_info_crosshair_viii_dark_hero = {
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.sensors = SENSOR_SET_TEMP_CHIPSET_CPU_MB |
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SENSOR_TEMP_T_SENSOR |
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SENSOR_TEMP_VRM | SENSOR_SET_TEMP_WATER |
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SENSOR_FAN_CPU_OPT | SENSOR_FAN_WATER_FLOW |
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SENSOR_CURR_CPU | SENSOR_IN_CPU_CORE,
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.mutex_path = ASUS_HW_ACCESS_MUTEX_ASMX,
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.family = family_amd_500_series,
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};
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static const struct ec_board_info board_info_crosshair_viii_hero = {
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.sensors = SENSOR_SET_TEMP_CHIPSET_CPU_MB |
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SENSOR_TEMP_T_SENSOR |
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SENSOR_TEMP_VRM | SENSOR_SET_TEMP_WATER |
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SENSOR_FAN_CPU_OPT | SENSOR_FAN_CHIPSET |
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SENSOR_FAN_WATER_FLOW | SENSOR_CURR_CPU |
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SENSOR_IN_CPU_CORE,
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.mutex_path = ASUS_HW_ACCESS_MUTEX_ASMX,
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.family = family_amd_500_series,
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};
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static const struct ec_board_info board_info_maximus_xi_hero = {
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.sensors = SENSOR_SET_TEMP_CHIPSET_CPU_MB |
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SENSOR_TEMP_T_SENSOR |
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SENSOR_TEMP_VRM | SENSOR_SET_TEMP_WATER |
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SENSOR_FAN_CPU_OPT | SENSOR_FAN_WATER_FLOW,
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.mutex_path = ASUS_HW_ACCESS_MUTEX_ASMX,
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.family = family_intel_300_series,
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};
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static const struct ec_board_info board_info_crosshair_viii_impact = {
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.sensors = SENSOR_SET_TEMP_CHIPSET_CPU_MB |
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SENSOR_TEMP_T_SENSOR | SENSOR_TEMP_VRM |
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SENSOR_FAN_CHIPSET | SENSOR_CURR_CPU |
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SENSOR_IN_CPU_CORE,
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.mutex_path = ASUS_HW_ACCESS_MUTEX_ASMX,
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.family = family_amd_500_series,
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};
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static const struct ec_board_info board_info_strix_b550_e_gaming = {
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.sensors = SENSOR_SET_TEMP_CHIPSET_CPU_MB |
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SENSOR_TEMP_T_SENSOR | SENSOR_TEMP_VRM |
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SENSOR_FAN_CPU_OPT,
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.mutex_path = ASUS_HW_ACCESS_MUTEX_ASMX,
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.family = family_amd_500_series,
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};
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static const struct ec_board_info board_info_strix_b550_i_gaming = {
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.sensors = SENSOR_SET_TEMP_CHIPSET_CPU_MB |
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SENSOR_TEMP_T_SENSOR | SENSOR_TEMP_VRM |
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SENSOR_FAN_VRM_HS | SENSOR_CURR_CPU |
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SENSOR_IN_CPU_CORE,
|
|
.mutex_path = ASUS_HW_ACCESS_MUTEX_ASMX,
|
|
.family = family_amd_500_series,
|
|
};
|
|
|
|
static const struct ec_board_info board_info_strix_x570_e_gaming = {
|
|
.sensors = SENSOR_SET_TEMP_CHIPSET_CPU_MB |
|
|
SENSOR_TEMP_T_SENSOR | SENSOR_TEMP_VRM |
|
|
SENSOR_FAN_CHIPSET | SENSOR_CURR_CPU |
|
|
SENSOR_IN_CPU_CORE,
|
|
.mutex_path = ASUS_HW_ACCESS_MUTEX_ASMX,
|
|
.family = family_amd_500_series,
|
|
};
|
|
|
|
static const struct ec_board_info board_info_strix_x570_e_gaming_wifi_ii = {
|
|
.sensors = SENSOR_SET_TEMP_CHIPSET_CPU_MB |
|
|
SENSOR_TEMP_T_SENSOR | SENSOR_CURR_CPU |
|
|
SENSOR_IN_CPU_CORE,
|
|
.mutex_path = ASUS_HW_ACCESS_MUTEX_ASMX,
|
|
.family = family_amd_500_series,
|
|
};
|
|
|
|
static const struct ec_board_info board_info_strix_x570_f_gaming = {
|
|
.sensors = SENSOR_SET_TEMP_CHIPSET_CPU_MB |
|
|
SENSOR_TEMP_T_SENSOR | SENSOR_FAN_CHIPSET,
|
|
.mutex_path = ASUS_HW_ACCESS_MUTEX_ASMX,
|
|
.family = family_amd_500_series,
|
|
};
|
|
|
|
static const struct ec_board_info board_info_strix_x570_i_gaming = {
|
|
.sensors = SENSOR_TEMP_CHIPSET | SENSOR_TEMP_VRM |
|
|
SENSOR_TEMP_T_SENSOR |
|
|
SENSOR_FAN_VRM_HS | SENSOR_FAN_CHIPSET |
|
|
SENSOR_CURR_CPU | SENSOR_IN_CPU_CORE,
|
|
.mutex_path = ASUS_HW_ACCESS_MUTEX_ASMX,
|
|
.family = family_amd_500_series,
|
|
};
|
|
|
|
static const struct ec_board_info board_info_strix_z690_a_gaming_wifi_d4 = {
|
|
.sensors = SENSOR_TEMP_T_SENSOR | SENSOR_TEMP_VRM,
|
|
.mutex_path = ASUS_HW_ACCESS_MUTEX_RMTW_ASMX,
|
|
.family = family_intel_600_series,
|
|
};
|
|
|
|
static const struct ec_board_info board_info_zenith_ii_extreme = {
|
|
.sensors = SENSOR_SET_TEMP_CHIPSET_CPU_MB | SENSOR_TEMP_T_SENSOR |
|
|
SENSOR_TEMP_VRM | SENSOR_SET_TEMP_WATER |
|
|
SENSOR_FAN_CPU_OPT | SENSOR_FAN_CHIPSET | SENSOR_FAN_VRM_HS |
|
|
SENSOR_FAN_WATER_FLOW | SENSOR_CURR_CPU | SENSOR_IN_CPU_CORE |
|
|
SENSOR_SET_WATER_BLOCK |
|
|
SENSOR_TEMP_T_SENSOR_2 | SENSOR_TEMP_SENSOR_EXTRA_1 |
|
|
SENSOR_TEMP_SENSOR_EXTRA_2 | SENSOR_TEMP_SENSOR_EXTRA_3,
|
|
.mutex_path = ASUS_HW_ACCESS_MUTEX_SB_PCI0_SBRG_SIO1_MUT0,
|
|
.family = family_amd_500_series,
|
|
};
|
|
|
|
#define DMI_EXACT_MATCH_ASUS_BOARD_NAME(name, board_info) \
|
|
{ \
|
|
.matches = { \
|
|
DMI_EXACT_MATCH(DMI_BOARD_VENDOR, \
|
|
"ASUSTeK COMPUTER INC."), \
|
|
DMI_EXACT_MATCH(DMI_BOARD_NAME, name), \
|
|
}, \
|
|
.driver_data = (void *)board_info, \
|
|
}
|
|
|
|
static const struct dmi_system_id dmi_table[] = {
|
|
DMI_EXACT_MATCH_ASUS_BOARD_NAME("PRIME X470-PRO",
|
|
&board_info_prime_x470_pro),
|
|
DMI_EXACT_MATCH_ASUS_BOARD_NAME("PRIME X570-PRO",
|
|
&board_info_prime_x570_pro),
|
|
DMI_EXACT_MATCH_ASUS_BOARD_NAME("ProArt X570-CREATOR WIFI",
|
|
&board_info_pro_art_x570_creator_wifi),
|
|
DMI_EXACT_MATCH_ASUS_BOARD_NAME("Pro WS X570-ACE",
|
|
&board_info_pro_ws_x570_ace),
|
|
DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG CROSSHAIR VIII DARK HERO",
|
|
&board_info_crosshair_viii_dark_hero),
|
|
DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG CROSSHAIR VIII FORMULA",
|
|
&board_info_crosshair_viii_hero),
|
|
DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG CROSSHAIR VIII HERO",
|
|
&board_info_crosshair_viii_hero),
|
|
DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG CROSSHAIR VIII HERO (WI-FI)",
|
|
&board_info_crosshair_viii_hero),
|
|
DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG MAXIMUS XI HERO",
|
|
&board_info_maximus_xi_hero),
|
|
DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG MAXIMUS XI HERO (WI-FI)",
|
|
&board_info_maximus_xi_hero),
|
|
DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG CROSSHAIR VIII IMPACT",
|
|
&board_info_crosshair_viii_impact),
|
|
DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG STRIX B550-E GAMING",
|
|
&board_info_strix_b550_e_gaming),
|
|
DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG STRIX B550-I GAMING",
|
|
&board_info_strix_b550_i_gaming),
|
|
DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG STRIX X570-E GAMING",
|
|
&board_info_strix_x570_e_gaming),
|
|
DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG STRIX X570-E GAMING WIFI II",
|
|
&board_info_strix_x570_e_gaming_wifi_ii),
|
|
DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG STRIX X570-F GAMING",
|
|
&board_info_strix_x570_f_gaming),
|
|
DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG STRIX X570-I GAMING",
|
|
&board_info_strix_x570_i_gaming),
|
|
DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG STRIX Z690-A GAMING WIFI D4",
|
|
&board_info_strix_z690_a_gaming_wifi_d4),
|
|
DMI_EXACT_MATCH_ASUS_BOARD_NAME("ROG ZENITH II EXTREME",
|
|
&board_info_zenith_ii_extreme),
|
|
{},
|
|
};
|
|
|
|
struct ec_sensor {
|
|
unsigned int info_index;
|
|
s32 cached_value;
|
|
};
|
|
|
|
struct lock_data {
|
|
union {
|
|
acpi_handle aml;
|
|
/* global lock handle */
|
|
u32 glk;
|
|
} mutex;
|
|
bool (*lock)(struct lock_data *data);
|
|
bool (*unlock)(struct lock_data *data);
|
|
};
|
|
|
|
/*
|
|
* The next function pairs implement options for locking access to the
|
|
* state and the EC
|
|
*/
|
|
static bool lock_via_acpi_mutex(struct lock_data *data)
|
|
{
|
|
/*
|
|
* ASUS DSDT does not specify that access to the EC has to be guarded,
|
|
* but firmware does access it via ACPI
|
|
*/
|
|
return ACPI_SUCCESS(acpi_acquire_mutex(data->mutex.aml,
|
|
NULL, ACPI_LOCK_DELAY_MS));
|
|
}
|
|
|
|
static bool unlock_acpi_mutex(struct lock_data *data)
|
|
{
|
|
return ACPI_SUCCESS(acpi_release_mutex(data->mutex.aml, NULL));
|
|
}
|
|
|
|
static bool lock_via_global_acpi_lock(struct lock_data *data)
|
|
{
|
|
return ACPI_SUCCESS(acpi_acquire_global_lock(ACPI_LOCK_DELAY_MS,
|
|
&data->mutex.glk));
|
|
}
|
|
|
|
static bool unlock_global_acpi_lock(struct lock_data *data)
|
|
{
|
|
return ACPI_SUCCESS(acpi_release_global_lock(data->mutex.glk));
|
|
}
|
|
|
|
struct ec_sensors_data {
|
|
const struct ec_board_info *board_info;
|
|
const struct ec_sensor_info *sensors_info;
|
|
struct ec_sensor *sensors;
|
|
/* EC registers to read from */
|
|
u16 *registers;
|
|
u8 *read_buffer;
|
|
/* sorted list of unique register banks */
|
|
u8 banks[ASUS_EC_MAX_BANK + 1];
|
|
/* in jiffies */
|
|
unsigned long last_updated;
|
|
struct lock_data lock_data;
|
|
/* number of board EC sensors */
|
|
u8 nr_sensors;
|
|
/*
|
|
* number of EC registers to read
|
|
* (sensor might span more than 1 register)
|
|
*/
|
|
u8 nr_registers;
|
|
/* number of unique register banks */
|
|
u8 nr_banks;
|
|
};
|
|
|
|
static u8 register_bank(u16 reg)
|
|
{
|
|
return reg >> 8;
|
|
}
|
|
|
|
static u8 register_index(u16 reg)
|
|
{
|
|
return reg & 0x00ff;
|
|
}
|
|
|
|
static bool is_sensor_data_signed(const struct ec_sensor_info *si)
|
|
{
|
|
/*
|
|
* guessed from WMI functions in DSDT code for boards
|
|
* of the X470 generation
|
|
*/
|
|
return si->type == hwmon_temp;
|
|
}
|
|
|
|
static const struct ec_sensor_info *
|
|
get_sensor_info(const struct ec_sensors_data *state, int index)
|
|
{
|
|
return state->sensors_info + state->sensors[index].info_index;
|
|
}
|
|
|
|
static int find_ec_sensor_index(const struct ec_sensors_data *ec,
|
|
enum hwmon_sensor_types type, int channel)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < ec->nr_sensors; i++) {
|
|
if (get_sensor_info(ec, i)->type == type) {
|
|
if (channel == 0)
|
|
return i;
|
|
channel--;
|
|
}
|
|
}
|
|
return -ENOENT;
|
|
}
|
|
|
|
static int bank_compare(const void *a, const void *b)
|
|
{
|
|
return *((const s8 *)a) - *((const s8 *)b);
|
|
}
|
|
|
|
static void setup_sensor_data(struct ec_sensors_data *ec)
|
|
{
|
|
struct ec_sensor *s = ec->sensors;
|
|
bool bank_found;
|
|
int i, j;
|
|
u8 bank;
|
|
|
|
ec->nr_banks = 0;
|
|
ec->nr_registers = 0;
|
|
|
|
for_each_set_bit(i, &ec->board_info->sensors,
|
|
BITS_PER_TYPE(ec->board_info->sensors)) {
|
|
s->info_index = i;
|
|
s->cached_value = 0;
|
|
ec->nr_registers +=
|
|
ec->sensors_info[s->info_index].addr.components.size;
|
|
bank_found = false;
|
|
bank = ec->sensors_info[s->info_index].addr.components.bank;
|
|
for (j = 0; j < ec->nr_banks; j++) {
|
|
if (ec->banks[j] == bank) {
|
|
bank_found = true;
|
|
break;
|
|
}
|
|
}
|
|
if (!bank_found) {
|
|
ec->banks[ec->nr_banks++] = bank;
|
|
}
|
|
s++;
|
|
}
|
|
sort(ec->banks, ec->nr_banks, 1, bank_compare, NULL);
|
|
}
|
|
|
|
static void fill_ec_registers(struct ec_sensors_data *ec)
|
|
{
|
|
const struct ec_sensor_info *si;
|
|
unsigned int i, j, register_idx = 0;
|
|
|
|
for (i = 0; i < ec->nr_sensors; ++i) {
|
|
si = get_sensor_info(ec, i);
|
|
for (j = 0; j < si->addr.components.size; ++j, ++register_idx) {
|
|
ec->registers[register_idx] =
|
|
(si->addr.components.bank << 8) +
|
|
si->addr.components.index + j;
|
|
}
|
|
}
|
|
}
|
|
|
|
static int setup_lock_data(struct device *dev)
|
|
{
|
|
const char *mutex_path;
|
|
int status;
|
|
struct ec_sensors_data *state = dev_get_drvdata(dev);
|
|
|
|
mutex_path = mutex_path_override ?
|
|
mutex_path_override : state->board_info->mutex_path;
|
|
|
|
if (!mutex_path || !strlen(mutex_path)) {
|
|
dev_err(dev, "Hardware access guard mutex name is empty");
|
|
return -EINVAL;
|
|
}
|
|
if (!strcmp(mutex_path, ACPI_GLOBAL_LOCK_PSEUDO_PATH)) {
|
|
state->lock_data.mutex.glk = 0;
|
|
state->lock_data.lock = lock_via_global_acpi_lock;
|
|
state->lock_data.unlock = unlock_global_acpi_lock;
|
|
} else {
|
|
status = acpi_get_handle(NULL, (acpi_string)mutex_path,
|
|
&state->lock_data.mutex.aml);
|
|
if (ACPI_FAILURE(status)) {
|
|
dev_err(dev,
|
|
"Failed to get hardware access guard AML mutex '%s': error %d",
|
|
mutex_path, status);
|
|
return -ENOENT;
|
|
}
|
|
state->lock_data.lock = lock_via_acpi_mutex;
|
|
state->lock_data.unlock = unlock_acpi_mutex;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int asus_ec_bank_switch(u8 bank, u8 *old)
|
|
{
|
|
int status = 0;
|
|
|
|
if (old) {
|
|
status = ec_read(ASUS_EC_BANK_REGISTER, old);
|
|
}
|
|
if (status || (old && (*old == bank)))
|
|
return status;
|
|
return ec_write(ASUS_EC_BANK_REGISTER, bank);
|
|
}
|
|
|
|
static int asus_ec_block_read(const struct device *dev,
|
|
struct ec_sensors_data *ec)
|
|
{
|
|
int ireg, ibank, status;
|
|
u8 bank, reg_bank, prev_bank;
|
|
|
|
bank = 0;
|
|
status = asus_ec_bank_switch(bank, &prev_bank);
|
|
if (status) {
|
|
dev_warn(dev, "EC bank switch failed");
|
|
return status;
|
|
}
|
|
|
|
if (prev_bank) {
|
|
/* oops... somebody else is working with the EC too */
|
|
dev_warn(dev,
|
|
"Concurrent access to the ACPI EC detected.\nRace condition possible.");
|
|
}
|
|
|
|
/* read registers minimizing bank switches. */
|
|
for (ibank = 0; ibank < ec->nr_banks; ibank++) {
|
|
if (bank != ec->banks[ibank]) {
|
|
bank = ec->banks[ibank];
|
|
if (asus_ec_bank_switch(bank, NULL)) {
|
|
dev_warn(dev, "EC bank switch to %d failed",
|
|
bank);
|
|
break;
|
|
}
|
|
}
|
|
for (ireg = 0; ireg < ec->nr_registers; ireg++) {
|
|
reg_bank = register_bank(ec->registers[ireg]);
|
|
if (reg_bank < bank) {
|
|
continue;
|
|
}
|
|
ec_read(register_index(ec->registers[ireg]),
|
|
ec->read_buffer + ireg);
|
|
}
|
|
}
|
|
|
|
status = asus_ec_bank_switch(prev_bank, NULL);
|
|
return status;
|
|
}
|
|
|
|
static inline s32 get_sensor_value(const struct ec_sensor_info *si, u8 *data)
|
|
{
|
|
if (is_sensor_data_signed(si)) {
|
|
switch (si->addr.components.size) {
|
|
case 1:
|
|
return (s8)*data;
|
|
case 2:
|
|
return (s16)get_unaligned_be16(data);
|
|
case 4:
|
|
return (s32)get_unaligned_be32(data);
|
|
default:
|
|
return 0;
|
|
}
|
|
} else {
|
|
switch (si->addr.components.size) {
|
|
case 1:
|
|
return *data;
|
|
case 2:
|
|
return get_unaligned_be16(data);
|
|
case 4:
|
|
return get_unaligned_be32(data);
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void update_sensor_values(struct ec_sensors_data *ec, u8 *data)
|
|
{
|
|
const struct ec_sensor_info *si;
|
|
struct ec_sensor *s, *sensor_end;
|
|
|
|
sensor_end = ec->sensors + ec->nr_sensors;
|
|
for (s = ec->sensors; s != sensor_end; s++) {
|
|
si = ec->sensors_info + s->info_index;
|
|
s->cached_value = get_sensor_value(si, data);
|
|
data += si->addr.components.size;
|
|
}
|
|
}
|
|
|
|
static int update_ec_sensors(const struct device *dev,
|
|
struct ec_sensors_data *ec)
|
|
{
|
|
int status;
|
|
|
|
if (!ec->lock_data.lock(&ec->lock_data)) {
|
|
dev_warn(dev, "Failed to acquire mutex");
|
|
return -EBUSY;
|
|
}
|
|
|
|
status = asus_ec_block_read(dev, ec);
|
|
|
|
if (!status) {
|
|
update_sensor_values(ec, ec->read_buffer);
|
|
}
|
|
|
|
if (!ec->lock_data.unlock(&ec->lock_data))
|
|
dev_err(dev, "Failed to release mutex");
|
|
|
|
return status;
|
|
}
|
|
|
|
static long scale_sensor_value(s32 value, int data_type)
|
|
{
|
|
switch (data_type) {
|
|
case hwmon_curr:
|
|
case hwmon_temp:
|
|
return value * MILLI;
|
|
default:
|
|
return value;
|
|
}
|
|
}
|
|
|
|
static int get_cached_value_or_update(const struct device *dev,
|
|
int sensor_index,
|
|
struct ec_sensors_data *state, s32 *value)
|
|
{
|
|
if (time_after(jiffies, state->last_updated + HZ)) {
|
|
if (update_ec_sensors(dev, state)) {
|
|
dev_err(dev, "update_ec_sensors() failure\n");
|
|
return -EIO;
|
|
}
|
|
|
|
state->last_updated = jiffies;
|
|
}
|
|
|
|
*value = state->sensors[sensor_index].cached_value;
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Now follow the functions that implement the hwmon interface
|
|
*/
|
|
|
|
static int asus_ec_hwmon_read(struct device *dev, enum hwmon_sensor_types type,
|
|
u32 attr, int channel, long *val)
|
|
{
|
|
int ret;
|
|
s32 value = 0;
|
|
|
|
struct ec_sensors_data *state = dev_get_drvdata(dev);
|
|
int sidx = find_ec_sensor_index(state, type, channel);
|
|
|
|
if (sidx < 0) {
|
|
return sidx;
|
|
}
|
|
|
|
ret = get_cached_value_or_update(dev, sidx, state, &value);
|
|
if (!ret) {
|
|
*val = scale_sensor_value(value,
|
|
get_sensor_info(state, sidx)->type);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int asus_ec_hwmon_read_string(struct device *dev,
|
|
enum hwmon_sensor_types type, u32 attr,
|
|
int channel, const char **str)
|
|
{
|
|
struct ec_sensors_data *state = dev_get_drvdata(dev);
|
|
int sensor_index = find_ec_sensor_index(state, type, channel);
|
|
*str = get_sensor_info(state, sensor_index)->label;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static umode_t asus_ec_hwmon_is_visible(const void *drvdata,
|
|
enum hwmon_sensor_types type, u32 attr,
|
|
int channel)
|
|
{
|
|
const struct ec_sensors_data *state = drvdata;
|
|
|
|
return find_ec_sensor_index(state, type, channel) >= 0 ? S_IRUGO : 0;
|
|
}
|
|
|
|
static int
|
|
asus_ec_hwmon_add_chan_info(struct hwmon_channel_info *asus_ec_hwmon_chan,
|
|
struct device *dev, int num,
|
|
enum hwmon_sensor_types type, u32 config)
|
|
{
|
|
int i;
|
|
u32 *cfg = devm_kcalloc(dev, num + 1, sizeof(*cfg), GFP_KERNEL);
|
|
|
|
if (!cfg)
|
|
return -ENOMEM;
|
|
|
|
asus_ec_hwmon_chan->type = type;
|
|
asus_ec_hwmon_chan->config = cfg;
|
|
for (i = 0; i < num; i++, cfg++)
|
|
*cfg = config;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct hwmon_ops asus_ec_hwmon_ops = {
|
|
.is_visible = asus_ec_hwmon_is_visible,
|
|
.read = asus_ec_hwmon_read,
|
|
.read_string = asus_ec_hwmon_read_string,
|
|
};
|
|
|
|
static struct hwmon_chip_info asus_ec_chip_info = {
|
|
.ops = &asus_ec_hwmon_ops,
|
|
};
|
|
|
|
static const struct ec_board_info *get_board_info(void)
|
|
{
|
|
const struct dmi_system_id *dmi_entry;
|
|
|
|
dmi_entry = dmi_first_match(dmi_table);
|
|
return dmi_entry ? dmi_entry->driver_data : NULL;
|
|
}
|
|
|
|
static int asus_ec_probe(struct platform_device *pdev)
|
|
{
|
|
const struct hwmon_channel_info **ptr_asus_ec_ci;
|
|
int nr_count[hwmon_max] = { 0 }, nr_types = 0;
|
|
struct hwmon_channel_info *asus_ec_hwmon_chan;
|
|
const struct ec_board_info *pboard_info;
|
|
const struct hwmon_chip_info *chip_info;
|
|
struct device *dev = &pdev->dev;
|
|
struct ec_sensors_data *ec_data;
|
|
const struct ec_sensor_info *si;
|
|
enum hwmon_sensor_types type;
|
|
struct device *hwdev;
|
|
unsigned int i;
|
|
int status;
|
|
|
|
pboard_info = get_board_info();
|
|
if (!pboard_info)
|
|
return -ENODEV;
|
|
|
|
ec_data = devm_kzalloc(dev, sizeof(struct ec_sensors_data),
|
|
GFP_KERNEL);
|
|
if (!ec_data)
|
|
return -ENOMEM;
|
|
|
|
dev_set_drvdata(dev, ec_data);
|
|
ec_data->board_info = pboard_info;
|
|
|
|
switch (ec_data->board_info->family) {
|
|
case family_amd_400_series:
|
|
ec_data->sensors_info = sensors_family_amd_400;
|
|
break;
|
|
case family_amd_500_series:
|
|
ec_data->sensors_info = sensors_family_amd_500;
|
|
break;
|
|
case family_intel_300_series:
|
|
ec_data->sensors_info = sensors_family_intel_300;
|
|
break;
|
|
case family_intel_600_series:
|
|
ec_data->sensors_info = sensors_family_intel_600;
|
|
break;
|
|
default:
|
|
dev_err(dev, "Unknown board family: %d",
|
|
ec_data->board_info->family);
|
|
return -EINVAL;
|
|
}
|
|
|
|
ec_data->nr_sensors = hweight_long(ec_data->board_info->sensors);
|
|
ec_data->sensors = devm_kcalloc(dev, ec_data->nr_sensors,
|
|
sizeof(struct ec_sensor), GFP_KERNEL);
|
|
|
|
status = setup_lock_data(dev);
|
|
if (status) {
|
|
dev_err(dev, "Failed to setup state/EC locking: %d", status);
|
|
return status;
|
|
}
|
|
|
|
setup_sensor_data(ec_data);
|
|
ec_data->registers = devm_kcalloc(dev, ec_data->nr_registers,
|
|
sizeof(u16), GFP_KERNEL);
|
|
ec_data->read_buffer = devm_kcalloc(dev, ec_data->nr_registers,
|
|
sizeof(u8), GFP_KERNEL);
|
|
|
|
if (!ec_data->registers || !ec_data->read_buffer)
|
|
return -ENOMEM;
|
|
|
|
fill_ec_registers(ec_data);
|
|
|
|
for (i = 0; i < ec_data->nr_sensors; ++i) {
|
|
si = get_sensor_info(ec_data, i);
|
|
if (!nr_count[si->type])
|
|
++nr_types;
|
|
++nr_count[si->type];
|
|
}
|
|
|
|
if (nr_count[hwmon_temp])
|
|
nr_count[hwmon_chip]++, nr_types++;
|
|
|
|
asus_ec_hwmon_chan = devm_kcalloc(
|
|
dev, nr_types, sizeof(*asus_ec_hwmon_chan), GFP_KERNEL);
|
|
if (!asus_ec_hwmon_chan)
|
|
return -ENOMEM;
|
|
|
|
ptr_asus_ec_ci = devm_kcalloc(dev, nr_types + 1,
|
|
sizeof(*ptr_asus_ec_ci), GFP_KERNEL);
|
|
if (!ptr_asus_ec_ci)
|
|
return -ENOMEM;
|
|
|
|
asus_ec_chip_info.info = ptr_asus_ec_ci;
|
|
chip_info = &asus_ec_chip_info;
|
|
|
|
for (type = 0; type < hwmon_max; ++type) {
|
|
if (!nr_count[type])
|
|
continue;
|
|
|
|
asus_ec_hwmon_add_chan_info(asus_ec_hwmon_chan, dev,
|
|
nr_count[type], type,
|
|
hwmon_attributes[type]);
|
|
*ptr_asus_ec_ci++ = asus_ec_hwmon_chan++;
|
|
}
|
|
|
|
dev_info(dev, "board has %d EC sensors that span %d registers",
|
|
ec_data->nr_sensors, ec_data->nr_registers);
|
|
|
|
hwdev = devm_hwmon_device_register_with_info(dev, "asusec",
|
|
ec_data, chip_info, NULL);
|
|
|
|
return PTR_ERR_OR_ZERO(hwdev);
|
|
}
|
|
|
|
MODULE_DEVICE_TABLE(dmi, dmi_table);
|
|
|
|
static struct platform_driver asus_ec_sensors_platform_driver = {
|
|
.driver = {
|
|
.name = "asus-ec-sensors",
|
|
},
|
|
.probe = asus_ec_probe,
|
|
};
|
|
|
|
static struct platform_device *asus_ec_sensors_platform_device;
|
|
|
|
static int __init asus_ec_init(void)
|
|
{
|
|
asus_ec_sensors_platform_device =
|
|
platform_create_bundle(&asus_ec_sensors_platform_driver,
|
|
asus_ec_probe, NULL, 0, NULL, 0);
|
|
|
|
if (IS_ERR(asus_ec_sensors_platform_device))
|
|
return PTR_ERR(asus_ec_sensors_platform_device);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void __exit asus_ec_exit(void)
|
|
{
|
|
platform_device_unregister(asus_ec_sensors_platform_device);
|
|
platform_driver_unregister(&asus_ec_sensors_platform_driver);
|
|
}
|
|
|
|
module_init(asus_ec_init);
|
|
module_exit(asus_ec_exit);
|
|
|
|
module_param_named(mutex_path, mutex_path_override, charp, 0);
|
|
MODULE_PARM_DESC(mutex_path,
|
|
"Override ACPI mutex path used to guard access to hardware");
|
|
|
|
MODULE_AUTHOR("Eugene Shalygin <eugene.shalygin@gmail.com>");
|
|
MODULE_DESCRIPTION(
|
|
"HWMON driver for sensors accessible via ACPI EC in ASUS motherboards");
|
|
MODULE_LICENSE("GPL");
|