MSI uses the WMI interface as a passthrough for writes to the EC
and uses a board name match and a quirk table from userspace on
Windows. Therefore, there is no auto-detection functionality and
we have to fallback to a quirk table.
Introduce it here, prior to starting to add features to it.
Signed-off-by: Antheas Kapenekakis <lkml@xxxxxxxxxxx>
---
drivers/platform/x86/msi-wmi-platform.c | 45 +++++++++++++++++++++++++
1 file changed, 45 insertions(+)
diff --git a/drivers/platform/x86/msi-wmi-platform.c b/drivers/platform/x86/msi-wmi-platform.c
index f0d1b8e1a2fec..408d42ab19e20 100644
--- a/drivers/platform/x86/msi-wmi-platform.c
+++ b/drivers/platform/x86/msi-wmi-platform.c
@@ -14,6 +14,7 @@
#include <linux/debugfs.h>
#include <linux/device.h>
#include <linux/device/driver.h>
+#include <linux/dmi.h>
#include <linux/errno.h>
#include <linux/hwmon.h>
#include <linux/kernel.h>
@@ -79,8 +80,12 @@ enum msi_wmi_platform_method {
MSI_PLATFORM_GET_WMI = 0x1d,
};
+struct msi_wmi_platform_quirk {
+};
+
struct msi_wmi_platform_data {
struct wmi_device *wdev;
+ struct msi_wmi_platform_quirk *quirks;
struct mutex wmi_lock; /* Necessary when calling WMI methods */
};
@@ -124,6 +129,39 @@ static const char * const msi_wmi_platform_debugfs_names[] = {
"get_wmi"
};
+static struct msi_wmi_platform_quirk quirk_default = {};
+static struct msi_wmi_platform_quirk quirk_gen1 = {
+};
+static struct msi_wmi_platform_quirk quirk_gen2 = {
+};
+
+static const struct dmi_system_id msi_quirks[] = {
+ {
+ .ident = "MSI Claw (gen 1)",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International Co., Ltd."),
+ DMI_MATCH(DMI_BOARD_NAME, "MS-1T41"),
+ },
+ .driver_data = &quirk_gen1,
+ },
+ {
+ .ident = "MSI Claw AI+ 7",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International Co., Ltd."),
+ DMI_MATCH(DMI_BOARD_NAME, "MS-1T42"),
+ },
+ .driver_data = &quirk_gen2,
+ },
+ {
+ .ident = "MSI Claw AI+ 8",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Micro-Star International Co., Ltd."),
+ DMI_MATCH(DMI_BOARD_NAME, "MS-1T52"),
+ },
+ .driver_data = &quirk_gen2,
+ },
+};
+
static int msi_wmi_platform_parse_buffer(union acpi_object *obj, u8 *output, size_t length)
{
if (obj->type != ACPI_TYPE_BUFFER)
@@ -413,6 +451,7 @@ static int msi_wmi_platform_init(struct msi_wmi_platform_data *data)
static int msi_wmi_platform_probe(struct wmi_device *wdev, const void *context)
{
struct msi_wmi_platform_data *data;
+ const struct dmi_system_id *dmi_id;
int ret;
data = devm_kzalloc(&wdev->dev, sizeof(*data), GFP_KERNEL);
@@ -422,6 +461,12 @@ static int msi_wmi_platform_probe(struct wmi_device *wdev, const void *context)
data->wdev = wdev;
dev_set_drvdata(&wdev->dev, data);
+ dmi_id = dmi_first_match(msi_quirks);
+ if (dmi_id)
+ data->quirks = dmi_id->driver_data;
+ else
+ data->quirks = &quirk_default;
+
ret = devm_mutex_init(&wdev->dev, &data->wmi_lock);
if (ret < 0)
return ret;
--
2.49.0
