[PATCH] media: pci: intel: ipu-bridge: Add rotation quirk for Dell XPS 14 DA14260

[syphyr <syphyr@gmail.com>]

[-- Attachment #1: Type: text/plain, Size: 1319 bytes --]

Hello,

I have isolated and resolved a hardware regression affecting the 
OmniVision camera module on the newer Intel-based Dell XPS 14 
configurations running under clean mainline kernels.

While testing against the upstream 7.2 release stack, applications 
interacting directly with raw libcamera pipelines (such as qcam) 
initialized successfully but rendered frames completely inverted. 
Furthermore, the mismatch between physical mounting and the factory ACPI 
SSDB buffer (which maps a hardcoded sensor rotation value of 0) 
triggered an internal driver stack trace during the subsystem boot phase.

This patch introduces an explicit DMI motherboard vendor and board ID 
matching rule ("0H2HX9") inside ipu_bridge_parse_ssdb() to override the 
faulty ACPI metadata, setting the property value to 180 degrees natively 
during initialization.

Testing confirms this entirely resolves the boot-time stack trace and 
successfully stabilizes the webcam feed inside qcam at full native 
frequency. Note that containerized/sandboxed GTK4 consumers under 
Wayland (such as gnome-snapshot) still encounter separate userspace 
format-negotiation deadlocks, but this patch successfully stabilizes the 
underlying kernel-side topology baseline.

Please review for inclusion into the staging media-tree.

Best regards,
syphyr

[-- Attachment #2: 0001-media-pci-intel-ipu-bridge-Add-rotation-quirk-for-De.patch --]
[-- Type: text/x-patch, Size: 1654 bytes --]

From df0213da05f67567587841d5fe31691146ef486e Mon Sep 17 00:00:00 2001
From: syphyr <syphyr@gmail.com>
Date: Thu, 29 Oct 2026 02:40:42 +0100
Subject: [PATCH] media: pci: intel: ipu-bridge: Add rotation quirk for Dell
 XPS 14 DA14260

The OmniVision OV08X40 camera sensor on the Dell XPS 14 DA14260 laptop
(motherboard board ID 0H2HX9) is physically mounted upside-down inside
the display bezel. However, the system's ACPI SSDB buffer hardcodes a
rotation value of 0, causing the open-source libcamera stack to render
the video stream inverted.

Introduce a targeted DMI matching quirk within ipu_bridge_parse_ssdb()
to intercept this specific motherboard signature. When matched, force
the sensor rotation property value to 180 degrees before initializing
the system topology nodes.

This corrects the inversion bug inside qcam at native link frequencies
and resolves an internal driver stack trace encountered during bootup when
parsing unaligned ACPI properties.

Signed-off-by: syphyr <syphyr@gmail.com>
---
 drivers/media/pci/intel/ipu-bridge.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/media/pci/intel/ipu-bridge.c b/drivers/media/pci/intel/ipu-bridge.c
index 510c0eca4484..5bb9f6449fe7 100644
--- a/drivers/media/pci/intel/ipu-bridge.c
+++ b/drivers/media/pci/intel/ipu-bridge.c
@@ -134,6 +134,13 @@ static const struct dmi_system_id upside_down_sensor_dmi_ids[] = {
 		},
 		.driver_data = "OVTI02C1",
 	},
+	{
+		.matches = {
+			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "XPS 14 DA14260"),
+		},
+		.driver_data = "OVTI08F4",
+	},
 	{} /* Terminating entry */
 };
 
-- 
2.53.0