From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752207Ab2AQHIf (ORCPT ); Tue, 17 Jan 2012 02:08:35 -0500 Received: from smtp5-g21.free.fr ([212.27.42.5]:52003 "EHLO smtp5-g21.free.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751348Ab2AQHId (ORCPT ); Tue, 17 Jan 2012 02:08:33 -0500 From: Corentin Chary To: platform-driver-x86@vger.kernel.org Cc: Zhang Rui , linux-kernel@vger.kernel.org, Andrzej Prochyra , Matthew Garrett , David Herrmann , =?UTF-8?q?Richard=20Sch=C3=BCtz?= , Seth Forshee , Len Brown , linux-acpi@vger.kernel.org, Corentin Chary Subject: [PATCH] ACPI / Video: blacklist some samsung laptops Date: Tue, 17 Jan 2012 08:08:18 +0100 Message-Id: <1326784098-3244-1-git-send-email-corentincj@iksaif.net> X-Mailer: git-send-email 1.7.5.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 --- 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