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From: Corentin Chary <corentincj@iksaif.net>
To: platform-driver-x86@vger.kernel.org
Cc: "Zhang Rui" <rui.zhang@intel.com>,
	linux-kernel@vger.kernel.org,
	"Andrzej Prochyra" <andrzej@prochyra.name>,
	"Matthew Garrett" <mjg59@srcf.ucam.org>,
	"David Herrmann" <dh.herrmann@googlemail.com>,
	"Richard Schütz" <r.schtz@t-online.de>,
	"Seth Forshee" <seth.forshee@canonical.com>,
	"Len Brown" <lenb@kernel.org>,
	linux-acpi@vger.kernel.org,
	"Corentin Chary" <corentincj@iksaif.net>
Subject: [PATCH] ACPI / Video: blacklist some samsung laptops
Date: Tue, 17 Jan 2012 08:08:18 +0100	[thread overview]
Message-ID: <1326784098-3244-1-git-send-email-corentincj@iksaif.net> (raw)

On these laptops, the ACPI video is not functional, and very unlikely
to be fixed by the vendor. Note that intel_backlight works for some
of these laptops, and the backlight from samsung-laptop always work.

The good news is that newer laptops have functional ACPI video device
and won't end up growing this list.

Signed-off-by: Corentin Chary <corentincj@iksaif.net>
---
 drivers/acpi/video_detect.c |   49 +++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 49 insertions(+), 0 deletions(-)

diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index 45d8097..66be45e 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -132,6 +132,53 @@ find_video(acpi_handle handle, u32 lvl, void *context, void **rv)
 	return AE_OK;
 }
 
+/* Force to use vendor driver when the ACPI device is known to be
+ * buggy */
+static int video_detect_force_vendor(const struct dmi_system_id *d)
+{
+	acpi_video_support |= ACPI_VIDEO_BACKLIGHT_DMI_VENDOR;
+	return 0;
+}
+
+static struct dmi_system_id video_detect_dmi_table[] = {
+	{
+	 .callback = video_detect_force_vendor,
+	 .ident = "N150P",
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
+		DMI_MATCH(DMI_PRODUCT_NAME, "N150P"),
+		DMI_MATCH(DMI_BOARD_NAME, "N150P"),
+		},
+	},
+	{
+	 .callback = video_detect_force_vendor,
+	 .ident = "N145P/N250P/N260P",
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
+		DMI_MATCH(DMI_PRODUCT_NAME, "N145P/N250P/N260P"),
+		DMI_MATCH(DMI_BOARD_NAME, "N145P/N250P/N260P"),
+		},
+	},
+	{
+	 .callback = video_detect_force_vendor,
+	 .ident = "N150/N210/N220",
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
+		DMI_MATCH(DMI_PRODUCT_NAME, "N150/N210/N220"),
+		DMI_MATCH(DMI_BOARD_NAME, "N150/N210/N220"),
+		},
+	},
+	{
+	 .callback = video_detect_force_vendor,
+	 .ident = "NF110/NF210/NF310",
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
+		DMI_MATCH(DMI_PRODUCT_NAME, "NF110/NF210/NF310"),
+		DMI_MATCH(DMI_BOARD_NAME, "NF110/NF210/NF310"),
+		},
+	},
+};
+
 /*
  * Returns the video capabilities of a specific ACPI graphics device
  *
@@ -164,6 +211,8 @@ long acpi_video_get_capabilities(acpi_handle graphics_handle)
 		 *		ACPI_VIDEO_BACKLIGHT_DMI_VENDOR;
 		 *}
 		 */
+
+		dmi_check_system(video_detect_dmi_table);
 	} else {
 		status = acpi_bus_get_device(graphics_handle, &tmp_dev);
 		if (ACPI_FAILURE(status)) {
-- 
1.7.5.4


             reply	other threads:[~2012-01-17  7:08 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-01-17  7:08 Corentin Chary [this message]
2012-01-17 20:19 ` [PATCH] ACPI / Video: blacklist some samsung laptops Seth Forshee
2012-01-30  8:26 ` Corentin Chary
2012-02-19 19:56   ` Corentin Chary
2012-02-20 11:06     ` David Herrmann
2012-02-20 14:27       ` Corentin Chary
  -- strict thread matches above, loose matches on Subject: below --
2012-03-05  9:01 Corentin Chary
2012-01-05 15:08 [PATCH] Platform: samsung-laptop: add DMI information for Samsung N150 Plus Seth Forshee
2012-01-07 14:12 ` [PATCH] ACPI / Video: blacklist some samsung laptops Corentin Chary
2012-01-08 10:46   ` Seth Forshee
2012-01-08 12:36     ` Corentin Chary
2012-01-08 13:40       ` Seth Forshee
2012-01-09 16:39   ` David Herrmann
2012-01-09 22:34     ` Andrzej Prochyra

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