linux-kernel - [PATCH] ACPI: video: force native for Apple MacbookPro11,2 and Air7,2

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Message-ID: <20241112222516.1.I7fa78e6acbbed56ed5677f5e2dacc098a269d955@changeid>
Date: Tue, 12 Nov 2024 22:25:17 +0000
From: Jonathan Denose <jdenose@...gle.com>
To: LKML <linux-kernel@...r.kernel.org>
Cc: linux-acpi@...r.kernel.org, Jonathan Denose <jdenose@...gle.com>, 
	Len Brown <lenb@...nel.org>, "Rafael J. Wysocki" <rafael@...nel.org>
Subject: [PATCH] ACPI: video: force native for Apple MacbookPro11,2 and Air7,2

There is a bug in the Macbook Pro 11,2 and Air 7,2 firmware similar to
what is described in:

commit 7dc918daaf29 ("ACPI: video: force native for Apple
MacbookPro9,2")

This bug causes their backlights not to come back after resume.

This commit adds DMI quirks to select the working native intel firmware
interface such that the backlght comes back on after resume.

Signed-off-by: Jonathan Denose <jdenose@...gle.com>
---

 drivers/acpi/video_detect.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index 015bd8e66c1cf..d507d5e084354 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -549,6 +549,14 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
 		DMI_MATCH(DMI_PRODUCT_NAME, "iMac12,2"),
 		},
 	},
+	{
+	 .callback = video_detect_force_native,
+	 /* Apple MacBook Air 7,2 */
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
+		DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir7,2"),
+		},
+	},
 	{
 	 .callback = video_detect_force_native,
 	 /* Apple MacBook Air 9,1 */
@@ -565,6 +573,14 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
 		DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro9,2"),
 		},
 	},
+	{
+	 .callback = video_detect_force_native,
+	 /* Apple MacBook Pro 11,2 */
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
+		DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro11,2"),
+		},
+	},
 	{
 	 /* https://bugzilla.redhat.com/show_bug.cgi?id=1217249 */
 	 .callback = video_detect_force_native,
-- 
2.47.0.277.g8800431eea-goog