linux-kernel - [PATCH RFC 2/2] platform/x86: alienware-wmi-wmax: Check for AWCC support using

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Message-Id: <20250308-awcc-uid-v1-2-6360892d8b95@gmail.com>
Date: Sat, 08 Mar 2025 17:05:29 -0500
From: Kurt Borja <kuurtb@...il.com>
To: Armin Wolf <W_Armin@....de>, Hans de Goede <hdegoede@...hat.com>, 
 Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
Cc: platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Dell.Client.Kernel@...l.com, Kurt Borja <kuurtb@...il.com>
Subject: [PATCH RFC 2/2] platform/x86: alienware-wmi-wmax: Check for AWCC
 support using _UID

The WMAX _UID of all devices that support the AWCC is "AWCC". This
includes the following devices which were manually by reading their ACPI
tables:

  - Dell G16 7630
  - Dell G5 5505 SE
  - Alienware m16 R1
  - Alienware m17 R5 AMD
  - Alienware x15 R2
  - Alienware 17 R5
  - Alienware Aurora R12
  - Alienware Aurora Ryzen Edition

And possibly many more, if not all devices with this interface.

Add a check for "AWCC" _UID in wmax_wmi_probe() as a last resort test
for support.

Signed-off-by: Kurt Borja <kuurtb@...il.com>
---
 drivers/platform/x86/dell/alienware-wmi-wmax.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/platform/x86/dell/alienware-wmi-wmax.c b/drivers/platform/x86/dell/alienware-wmi-wmax.c
index 46d11b200820cdbaa841fc97e33b339fca42104e..529041f419165aa896a5ce49f889e29901d5b80e 100644
--- a/drivers/platform/x86/dell/alienware-wmi-wmax.c
+++ b/drivers/platform/x86/dell/alienware-wmi-wmax.c
@@ -1422,6 +1422,9 @@ static int wmax_wmi_probe(struct wmi_device *wdev, const void *context)
 	};
 	int ret;
 
+	if (!awcc && !strncmp(wmidev_get_acpi_device_uid(wdev), "AWCC", 4))
+		awcc = &generic_quirks;
+
 	if (awcc)
 		ret = alienware_awcc_setup(wdev);
 	else

-- 
2.48.1