diff options
| author | Dariusz Figzał <dariuszfigzal@gmail.com> | 2026-06-10 18:49:42 +0200 |
|---|---|---|
| committer | Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> | 2026-06-11 14:51:52 +0300 |
| commit | 711104ab5ed500f155e4a53c56571b9b24a9a9b9 (patch) | |
| tree | b47e4053d0c860bc0e682f55dbbbe705ff133131 /include/linux/platform_data | |
| parent | 2565a28cdcdcb035e151d285efcba26bccb3726e (diff) | |
| download | linux-next-711104ab5ed500f155e4a53c56571b9b24a9a9b9.tar.gz linux-next-711104ab5ed500f155e4a53c56571b9b24a9a9b9.zip | |
platform/x86: asus-wmi: add keystone dongle support
The ASUS Keystone is a physical NFC-like dongle that slots into supported
ASUS laptops. The EC fires WMI notify code 0xB4 on insert/remove events.
Expose the current insert state via a sysfs attribute by querying WMI
device ID 0x00120091 (DSTS). This devid does not follow the standard DSTS
convention: PRESENCE_BIT (0x00010000) encodes the insert state rather than
feature presence, and STATUS_BIT is never set. Presence of a keystone slot
is detected by a successful DSTS call.
Reviewed-by: Denis Benato <denis.benato@linux.dev>
Signed-off-by: Dariusz Figzał <dariuszfigzal@gmail.com>
Link: https://patch.msgid.link/20260610164942.74956-1-dariuszfigzal@gmail.com
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Diffstat (limited to 'include/linux/platform_data')
| -rw-r--r-- | include/linux/platform_data/x86/asus-wmi.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/platform_data/x86/asus-wmi.h b/include/linux/platform_data/x86/asus-wmi.h index 554f41b827e1..c29962d5baac 100644 --- a/include/linux/platform_data/x86/asus-wmi.h +++ b/include/linux/platform_data/x86/asus-wmi.h @@ -147,6 +147,13 @@ #define ASUS_WMI_DEVID_GPU_MUX 0x00090016 #define ASUS_WMI_DEVID_GPU_MUX_VIVO 0x00090026 +/* Keystone dongle insert/remove state. + * PRESENCE_BIT (0x00010000) encodes insert state: + * 0x00010000 = inserted, 0x00000000 = absent. STATUS_BIT is never set. + * 0xFFFFFFFE means no keystone slot on this machine. + */ +#define ASUS_WMI_DEVID_KEYSTONE 0x00120091 + /* TUF laptop RGB modes/colours */ #define ASUS_WMI_DEVID_TUF_RGB_MODE 0x00100056 #define ASUS_WMI_DEVID_TUF_RGB_MODE2 0x0010005A |