From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dmitry Tunin Subject: [PATCH] acpi: Add "acpi_osi=" for ASUS X200MA to enable brightness Date: Sun, 07 Dec 2014 16:09:20 +0300 Message-ID: <54845180.4060206@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mail-lb0-f170.google.com ([209.85.217.170]:41790 "EHLO mail-lb0-f170.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752490AbaLGNJX (ORCPT ); Sun, 7 Dec 2014 08:09:23 -0500 Sender: platform-driver-x86-owner@vger.kernel.org List-ID: To: platform-driver-x86@vger.kernel.org Cc: linux-kernel , stable@vger.kernel.org Add "acpi_osi=" quirk for ASUS X200MA More information can be found in UX302LA bugreport https://bugzilla.kernel.org/show_bug.cgi?id=70241 I reported it to launchpad too https://bugs.launchpad.net/ubuntu/bug/1400068 Cc:stable@vger.kernel.org Signed-off-by: Dmitry Tunin --- drivers/acpi/blacklist.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/drivers/acpi/blacklist.c b/drivers/acpi/blacklist.c index 7556e7c..f78ed08 100644 --- a/drivers/acpi/blacklist.c +++ b/drivers/acpi/blacklist.c @@ -162,6 +162,17 @@ static int __init dmi_disable_osi_win8(const struct dmi_system_id *d) acpi_osi_setup("!Windows 2012"); return 0; } +/* + * Some ASUS models firmware declares 16 devices instead of 8 + * 'acpi_osi=' kernel parameter fixes it + * Without this parameters brightness keys Fn+F5 and F6 do not work + */ +static int __init dmi_disable_osi_all(const struct dmi_system_id *d) +{ + printk(KERN_NOTICE PREFIX "DMI detected: %s\n", d->ident); + acpi_osi_setup(""); + return 0; +} static struct dmi_system_id acpi_osi_dmi_table[] __initdata = { { @@ -371,6 +382,15 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = { DMI_MATCH(DMI_PRODUCT_NAME, "1015PX"), }, }, + /* Without this brightness keys do not work */ + { + .callback = dmi_disable_osi_all, + .ident = "ASUSTeK COMPUTER INC. X200MA", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), + DMI_MATCH(DMI_PRODUCT_NAME, "X200MA"), + }, + }, {} }; -- 1.9.1