From mboxrd@z Thu Jan 1 00:00:00 1970 From: Darren Hart Subject: Re: [PATCH] toshiba_acpi: Add /dev/toshiba_acpi device Date: Mon, 20 Jul 2015 14:36:31 -0700 Message-ID: <20150720213631.GA34611@vmdeb7> References: <1437089564-4242-1-git-send-email-coproscefalo@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1437089564-4242-1-git-send-email-coproscefalo@gmail.com> Sender: linux-doc-owner@vger.kernel.org To: Azael Avalos Cc: Jonathan Corbet , Jonathan Buzzard , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-api@vger.kernel.org List-Id: linux-api@vger.kernel.org On Thu, Jul 16, 2015 at 05:32:44PM -0600, Azael Avalos wrote: > There were previous attempts to "merge" the toshiba SMM module to the > toshiba_acpi one, they were trying to imitate what the old toshiba > module does, however, some models (TOS1900 devices) come with a > "crippled" implementation and do not provide all the "features" a > "genuine" Toshiba BIOS does. > > This patch adds a new device called toshiba_acpi, which aim is to > enable userspace to access the SMM on Toshiba laptops via ACPI calls. > > Creating a new convenience _IOWR command to access the SCI functions > by opening/closing the SCI internally to avoid buggy BIOS, while at > the same time providing backwards compatibility. > > Older programs who wish to access the SMM on newer models can do it > without much code change, as the toshiba.h header was modified to > reflect these changes as well as adds all the toshiba_acpi paths > and commands. To clarify, the newer models didn't work at all previously, so this is not changing the user:kernel interface, but rather enabling it on newer machines, and programs wishing to take advantage of that can do so with minimal change. Correct? -- Darren Hart Intel Open Source Technology Center