From c888d0bd055b57688534a884f8f210a91d15e00f Mon Sep 17 00:00:00 2001 From: Ionut Nechita Date: Wed, 7 Jan 2026 17:42:22 +0200 Subject: [PATCH] HID: asus: Add WMI communication infrastructure Add infrastructure for the HID driver to communicate with the asus-wmi driver for handling special keys that require WMI communication. This includes: - Define ASUS_WMI_METHODID_NOTIF method ID in asus-wmi.h - Implement asus_wmi_send_event() function to send events to asus-wmi Reviewed-by: Denis Benato Reviewed-by: Mario Limonciello (AMD) Signed-off-by: Ionut Nechita Signed-off-by: Jiri Kosina --- drivers/hid/hid-asus.c | 24 ++++++++++++++++++++++ include/linux/platform_data/x86/asus-wmi.h | 1 + 2 files changed, 25 insertions(+) diff --git a/drivers/hid/hid-asus.c b/drivers/hid/hid-asus.c index 49ffed0f6e9ea..f778387c3c557 100644 --- a/drivers/hid/hid-asus.c +++ b/drivers/hid/hid-asus.c @@ -23,6 +23,7 @@ /* */ +#include #include #include #include @@ -320,6 +321,29 @@ static int asus_e1239t_event(struct asus_drvdata *drvdat, u8 *data, int size) return 0; } +/* + * Send events to asus-wmi driver for handling special keys + */ +static int asus_wmi_send_event(struct asus_drvdata *drvdata, u8 code) +{ + int err; + u32 retval; + + err = asus_wmi_evaluate_method(ASUS_WMI_METHODID_DEVS, + ASUS_WMI_METHODID_NOTIF, code, &retval); + if (err) { + pr_warn("Failed to notify asus-wmi: %d\n", err); + return err; + } + + if (retval != 0) { + pr_warn("Failed to notify asus-wmi (retval): 0x%x\n", retval); + return -EIO; + } + + return 0; +} + static int asus_event(struct hid_device *hdev, struct hid_field *field, struct hid_usage *usage, __s32 value) { diff --git a/include/linux/platform_data/x86/asus-wmi.h b/include/linux/platform_data/x86/asus-wmi.h index 8a515179113da..e23b481ab1183 100644 --- a/include/linux/platform_data/x86/asus-wmi.h +++ b/include/linux/platform_data/x86/asus-wmi.h @@ -27,6 +27,7 @@ #define ASUS_WMI_METHODID_KBFT 0x5446424B /* KeyBoard FilTer */ #define ASUS_WMI_METHODID_INIT 0x54494E49 /* INITialize */ #define ASUS_WMI_METHODID_HKEY 0x59454B48 /* Hot KEY ?? */ +#define ASUS_WMI_METHODID_NOTIF 0x00100021 /* Notify method */ #define ASUS_WMI_UNSUPPORTED_METHOD 0xFFFFFFFE -- 2.47.3