From patchwork Tue Apr 5 12:44:54 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rajendra Nayak X-Patchwork-Id: 686511 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id p35CjHgg016381 for ; Tue, 5 Apr 2011 12:45:20 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753599Ab1DEMpQ (ORCPT ); Tue, 5 Apr 2011 08:45:16 -0400 Received: from bear.ext.ti.com ([192.94.94.41]:48309 "EHLO bear.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753394Ab1DEMpP (ORCPT ); Tue, 5 Apr 2011 08:45:15 -0400 Received: from dbdp31.itg.ti.com ([172.24.170.98]) by bear.ext.ti.com (8.13.7/8.13.7) with ESMTP id p35Cj5IY017588 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Tue, 5 Apr 2011 07:45:07 -0500 Received: from linfarm476.india.ti.com (localhost [127.0.0.1]) by dbdp31.itg.ti.com (8.13.8/8.13.8) with ESMTP id p35Ciw4x013340; Tue, 5 Apr 2011 18:14:59 +0530 (IST) Received: from linfarm476.india.ti.com (localhost [127.0.0.1]) by linfarm476.india.ti.com (8.12.11/8.12.11) with ESMTP id p35Ciwgx010587; Tue, 5 Apr 2011 18:14:58 +0530 Received: (from a0131687@localhost) by linfarm476.india.ti.com (8.12.11/8.12.11/Submit) id p35Ciw4D010585; Tue, 5 Apr 2011 18:14:58 +0530 From: Rajendra Nayak To: linux-omap@vger.kernel.org Cc: paul@pwsan.com, khilman@ti.com, b-cousson@ti.com, santosh.shilimkar@ti.com, linux-arm-kernel@lists.infradead.org, Rajendra Nayak Subject: [PATCH 1/4] OMAP2+: clockdomain: Add an api to read idle mode Date: Tue, 5 Apr 2011 18:14:54 +0530 Message-Id: <1302007497-10525-2-git-send-email-rnayak@ti.com> X-Mailer: git-send-email 1.5.6.6 In-Reply-To: <1302007497-10525-1-git-send-email-rnayak@ti.com> References: <1302007497-10525-1-git-send-email-rnayak@ti.com> Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.6 (demeter1.kernel.org [140.211.167.41]); Tue, 05 Apr 2011 12:45:25 +0000 (UTC) Add a clockdomain api to check if hardware supervised idle transitions are enabled on a clockdomain. Signed-off-by: Rajendra Nayak --- arch/arm/mach-omap2/clockdomain.c | 21 +++++++++++++++++++++ arch/arm/mach-omap2/clockdomain.h | 3 +++ 2 files changed, 24 insertions(+), 0 deletions(-) diff --git a/arch/arm/mach-omap2/clockdomain.c b/arch/arm/mach-omap2/clockdomain.c index ab87854..1de6def 100644 --- a/arch/arm/mach-omap2/clockdomain.c +++ b/arch/arm/mach-omap2/clockdomain.c @@ -795,6 +795,27 @@ void clkdm_deny_idle(struct clockdomain *clkdm) arch_clkdm->clkdm_deny_idle(clkdm); } +/** + * clkdm_is_idle - Check if the clkdm hwsup/autoidle is enabled + * @clkdm: struct clockdomain * + * + * Returns true if the clockdomain is in hardware-supervised + * idle mode, or 0 otherwise. + * + */ +int clkdm_is_idle(struct clockdomain *clkdm) +{ + if (!clkdm) + return -EINVAL; + + if (!arch_clkdm || !arch_clkdm->clkdm_is_idle) + return -EINVAL; + + pr_debug("clockdomain: reading idle state for %s\n", clkdm->name); + + return arch_clkdm->clkdm_is_idle(clkdm); +} + /* Clockdomain-to-clock framework interface code */ diff --git a/arch/arm/mach-omap2/clockdomain.h b/arch/arm/mach-omap2/clockdomain.h index 85b3dce..2fe3412 100644 --- a/arch/arm/mach-omap2/clockdomain.h +++ b/arch/arm/mach-omap2/clockdomain.h @@ -138,6 +138,7 @@ struct clockdomain { * @clkdm_wakeup: Force a clockdomain to wakeup * @clkdm_allow_idle: Enable hw supervised idle transitions for clock domain * @clkdm_deny_idle: Disable hw supervised idle transitions for clock domain + * @clkdm_is_idle: Check if hw supervised idle transitions are enabled * @clkdm_clk_enable: Put the clkdm in right state for a clock enable * @clkdm_clk_disable: Put the clkdm in right state for a clock disable */ @@ -154,6 +155,7 @@ struct clkdm_ops { int (*clkdm_wakeup)(struct clockdomain *clkdm); void (*clkdm_allow_idle)(struct clockdomain *clkdm); void (*clkdm_deny_idle)(struct clockdomain *clkdm); + int (*clkdm_is_idle)(struct clockdomain *clkdm); int (*clkdm_clk_enable)(struct clockdomain *clkdm); int (*clkdm_clk_disable)(struct clockdomain *clkdm); }; @@ -177,6 +179,7 @@ int clkdm_clear_all_sleepdeps(struct clockdomain *clkdm); void clkdm_allow_idle(struct clockdomain *clkdm); void clkdm_deny_idle(struct clockdomain *clkdm); +int clkdm_is_idle(struct clockdomain *clkdm); int clkdm_wakeup(struct clockdomain *clkdm); int clkdm_sleep(struct clockdomain *clkdm);