Re: [PATCH v1 05/10] platform/x86: msi-wmi-platform: Add platform profile through shift mode
From: Armin Wolf
Date: Sun May 18 2025 - 21:58:55 EST
Am 11.05.25 um 22:44 schrieb Antheas Kapenekakis:
MSI's version of platform profile in Windows is called shift mode.
Introduce it here, and add a profile handler to it.
It has 5 modes: sport, comfort, green, eco, and user.
Confusingly, for the Claw, MSI only uses sport, green, and eco,
where they correspond to performance, balanced, and low-power.
Therefore, comfort is mapped to balanced-performance, and user to
custom.
Signed-off-by: Antheas Kapenekakis <lkml@xxxxxxxxxxx>
---
drivers/platform/x86/Kconfig | 1 +
drivers/platform/x86/msi-wmi-platform.c | 117 ++++++++++++++++++++++++
2 files changed, 118 insertions(+)
diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index bee98251b8f0b..57a48910c8fd4 100644
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -746,6 +746,7 @@ config MSI_WMI_PLATFORM
tristate "MSI WMI Platform features"
depends on ACPI_WMI
depends on HWMON
+ select ACPI_PLATFORM_PROFILE
help
Say Y here if you want to have support for WMI-based platform features
like fan sensor access on MSI machines.
diff --git a/drivers/platform/x86/msi-wmi-platform.c b/drivers/platform/x86/msi-wmi-platform.c
index 9ac3c6f1b3f1d..c0b577c95c079 100644
--- a/drivers/platform/x86/msi-wmi-platform.c
+++ b/drivers/platform/x86/msi-wmi-platform.c
@@ -17,6 +17,7 @@
#include <linux/dmi.h>
#include <linux/errno.h>
#include <linux/fixp-arith.h>
+#include <linux/platform_profile.h>
#include <linux/hwmon.h>
#include <linux/hwmon-sysfs.h>
#include <linux/kernel.h>
@@ -63,6 +64,16 @@
#define MSI_PLATFORM_AP_FAN_FLAGS_OFFSET 1
#define MSI_PLATFORM_AP_ENABLE_FAN_TABLES BIT(7)
+/* Get_Data() and Set_Data() Shift Mode Register */
+#define MSI_PLATFORM_SHIFT_ADDR 0xd2
+#define MSI_PLATFORM_SHIFT_DISABLE BIT(7)
+#define MSI_PLATFORM_SHIFT_ENABLE (BIT(7) | BIT(6))
+#define MSI_PLATFORM_SHIFT_SPORT (MSI_PLATFORM_SHIFT_ENABLE + 4)
+#define MSI_PLATFORM_SHIFT_COMFORT (MSI_PLATFORM_SHIFT_ENABLE + 0)
+#define MSI_PLATFORM_SHIFT_GREEN (MSI_PLATFORM_SHIFT_ENABLE + 1)
+#define MSI_PLATFORM_SHIFT_ECO (MSI_PLATFORM_SHIFT_ENABLE + 2)
+#define MSI_PLATFORM_SHIFT_USER (MSI_PLATFORM_SHIFT_ENABLE + 3)
+
Please use a enum for the shift modes and built the final value later using FIELD_PREP().
Also please update the documentation to include the new WMI methods.
static bool force;
module_param_unsafe(force, bool, 0);
MODULE_PARM_DESC(force, "Force loading without checking for supported WMI interface versions");
@@ -100,12 +111,14 @@ enum msi_wmi_platform_method {
};
struct msi_wmi_platform_quirk {
+ bool shift_mode; /* Shift mode is supported */
};
struct msi_wmi_platform_data {
struct wmi_device *wdev;
struct msi_wmi_platform_quirk *quirks;
struct mutex wmi_lock; /* Necessary when calling WMI methods */
+ struct device *ppdev;
};
struct msi_wmi_platform_debugfs_data {
@@ -150,8 +163,10 @@ static const char * const msi_wmi_platform_debugfs_names[] = {
static struct msi_wmi_platform_quirk quirk_default = {};
static struct msi_wmi_platform_quirk quirk_gen1 = {
+ .shift_mode = true
};
static struct msi_wmi_platform_quirk quirk_gen2 = {
+ .shift_mode = true
};
static const struct dmi_system_id msi_quirks[] = {
@@ -561,6 +576,90 @@ static const struct hwmon_chip_info msi_wmi_platform_chip_info = {
.info = msi_wmi_platform_info,
};
+static int msi_wmi_platform_profile_probe(void *drvdata, unsigned long *choices)
+{
+ set_bit(PLATFORM_PROFILE_LOW_POWER, choices);
+ set_bit(PLATFORM_PROFILE_BALANCED, choices);
+ set_bit(PLATFORM_PROFILE_BALANCED_PERFORMANCE, choices);
+ set_bit(PLATFORM_PROFILE_PERFORMANCE, choices);
+ return 0;
+}
+
+static int msi_wmi_platform_profile_get(struct device *dev,
+ enum platform_profile_option *profile)
+{
+ struct msi_wmi_platform_data *data = dev_get_drvdata(dev);
+ int ret;
+
+ u8 buffer[32] = { };
+
+ buffer[0] = MSI_PLATFORM_SHIFT_ADDR;
+
+ ret = msi_wmi_platform_query(data, MSI_PLATFORM_GET_DATA, buffer, sizeof(buffer));
+ if (ret < 0)
+ return ret;
+
+ if (buffer[0] != 1)
+ return -EINVAL;
Please omit this check, msi_wmi_platform_parse_buffer() already takes care of that.
Also could it be that the OEM application uses the Get_AP() WMI method for getting
this value? If yes when please follow this behavior to maximize compatibility.
+
+ switch (buffer[1]) {
+ case MSI_PLATFORM_SHIFT_SPORT:
+ *profile = PLATFORM_PROFILE_PERFORMANCE;
+ return 0;
+ case MSI_PLATFORM_SHIFT_COMFORT:
+ *profile = PLATFORM_PROFILE_BALANCED_PERFORMANCE;
+ return 0;
+ case MSI_PLATFORM_SHIFT_GREEN:
+ *profile = PLATFORM_PROFILE_BALANCED;
+ return 0;
+ case MSI_PLATFORM_SHIFT_ECO:
+ *profile = PLATFORM_PROFILE_LOW_POWER;
+ return 0;
+ case MSI_PLATFORM_SHIFT_USER:
+ *profile = PLATFORM_PROFILE_CUSTOM;
+ return 0;
+ default:
+ return -EINVAL;
+ }
+}
+
+static int msi_wmi_platform_profile_set(struct device *dev,
+ enum platform_profile_option profile)
+{
+ struct msi_wmi_platform_data *data = dev_get_drvdata(dev);
+ u8 buffer[32] = { };
+
+ buffer[0] = MSI_PLATFORM_SHIFT_ADDR;
+
+ switch (profile) {
+ case PLATFORM_PROFILE_PERFORMANCE:
+ buffer[1] = MSI_PLATFORM_SHIFT_SPORT;
+ break;
+ case PLATFORM_PROFILE_BALANCED_PERFORMANCE:
+ buffer[1] = MSI_PLATFORM_SHIFT_COMFORT;
+ break;
+ case PLATFORM_PROFILE_BALANCED:
+ buffer[1] = MSI_PLATFORM_SHIFT_GREEN;
+ break;
+ case PLATFORM_PROFILE_LOW_POWER:
+ buffer[1] = MSI_PLATFORM_SHIFT_ECO;
+ break;
+ case PLATFORM_PROFILE_CUSTOM:
+ buffer[1] = MSI_PLATFORM_SHIFT_USER;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return msi_wmi_platform_query(data, MSI_PLATFORM_SET_DATA, buffer, sizeof(buffer));
+}
+
+static const struct platform_profile_ops msi_wmi_platform_profile_ops = {
+ .probe = msi_wmi_platform_profile_probe,
+ .profile_get = msi_wmi_platform_profile_get,
+ .profile_set = msi_wmi_platform_profile_set,
+};
+
static ssize_t msi_wmi_platform_debugfs_write(struct file *fp, const char __user *input,
size_t length, loff_t *offset)
{
@@ -742,6 +841,22 @@ static int msi_wmi_platform_init(struct msi_wmi_platform_data *data)
return 0;
}
+static int msi_wmi_platform_profile_setup(struct msi_wmi_platform_data *data)
Please rename this function to msi_wmi_platform_profile_init().
+{
+ int err;
+
+ if (!data->quirks->shift_mode)
+ return 0;
+
+ data->ppdev = devm_platform_profile_register(
+ &data->wdev->dev, "msi-wmi-platform", data,
+ &msi_wmi_platform_profile_ops);
Please turn ppdev into a local variable. Also please remove the err variable.
Thanks,
Armin Wolf
+ if (err)
+ return err;
+
+ return PTR_ERR_OR_ZERO(data->ppdev);
+}
+
static int msi_wmi_platform_probe(struct wmi_device *wdev, const void *context)
{
struct msi_wmi_platform_data *data;
@@ -775,6 +890,8 @@ static int msi_wmi_platform_probe(struct wmi_device *wdev, const void *context)
msi_wmi_platform_debugfs_init(data);
+ msi_wmi_platform_profile_setup(data);
+
return msi_wmi_platform_hwmon_init(data);
}