From patchwork Thu Oct 4 01:16:02 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Turquette X-Patchwork-Id: 1544191 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by patchwork2.kernel.org (Postfix) with ESMTP id 702E4DFF71 for ; Thu, 4 Oct 2012 01:19:03 +0000 (UTC) Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1TJa3g-0003bZ-Tm; Thu, 04 Oct 2012 01:17:01 +0000 Received: from bear.ext.ti.com ([192.94.94.41]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1TJa3V-0003Zv-AK for linux-arm-kernel@lists.infradead.org; Thu, 04 Oct 2012 01:16:50 +0000 Received: from dlelxv30.itg.ti.com ([172.17.2.17]) by bear.ext.ti.com (8.13.7/8.13.7) with ESMTP id q941Gk0u015182; Wed, 3 Oct 2012 20:16:46 -0500 Received: from DFLE73.ent.ti.com (dfle73.ent.ti.com [128.247.5.110]) by dlelxv30.itg.ti.com (8.13.8/8.13.8) with ESMTP id q941Gkoa015807; Wed, 3 Oct 2012 20:16:46 -0500 Received: from dlelxv22.itg.ti.com (172.17.1.197) by dfle73.ent.ti.com (128.247.5.110) with Microsoft SMTP Server id 14.1.323.3; Wed, 3 Oct 2012 20:16:46 -0500 Received: from nucleus.nsc.com (nucleus.nsc.com [10.188.36.112]) by dlelxv22.itg.ti.com (8.13.8/8.13.8) with ESMTP id q941Gir3013802; Wed, 3 Oct 2012 20:16:46 -0500 From: Mike Turquette To: , Subject: [PATCH 2/5] ARM: omap: introduce .get_voltage callback Date: Wed, 3 Oct 2012 18:16:02 -0700 Message-ID: <1349313365-5262-3-git-send-email-mturquette@ti.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1349313365-5262-1-git-send-email-mturquette@ti.com> References: <1349313365-5262-1-git-send-email-mturquette@ti.com> MIME-Version: 1.0 X-Spam-Note: CRM114 invocation failed X-Spam-Score: -9.0 (---------) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-9.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at http://www.dnswl.org/, high trust [192.94.94.41 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -2.1 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: linux-omap@vger.kernel.org, Mike Turquette , linux-arm-kernel@lists.infradead.org, Mike Turquette X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-arm-kernel-bounces@lists.infradead.org Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org From: Mike Turquette Introduces a new callback to struct voltagedomain for retrieving the voltage of the voltage domain from the hardware. This will be used to populate voltdm->nominal_volt during initialization of the voltage code instead of waiting for the first call to voltdm_scale. In the event of an error or the inability to determine voltage the callback must return zero. It is the callers responsibility to gracefully degrade when presented with a voltage of zero. Signed-off-by: Mike Turquette Signed-off-by: Mike Turquette --- arch/arm/mach-omap2/voltage.h | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/mach-omap2/voltage.h b/arch/arm/mach-omap2/voltage.h index 0ac2caf..0ded54f 100644 --- a/arch/arm/mach-omap2/voltage.h +++ b/arch/arm/mach-omap2/voltage.h @@ -85,6 +85,7 @@ struct voltagedomain { u32 rate; } sys_clk; + unsigned long (*get_voltage) (struct voltagedomain *voltdm); int (*scale) (struct voltagedomain *voltdm, unsigned long target_volt);