From patchwork Tue Aug 16 13:43:16 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jean Pihet X-Patchwork-Id: 1071652 Received: from smtp1.linux-foundation.org (smtp1.linux-foundation.org [140.211.169.13]) by demeter1.kernel.org (8.14.4/8.14.4) with ESMTP id p7GE3Dhv012895 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=FAIL) for ; Tue, 16 Aug 2011 14:03:34 GMT Received: from daredevil.linux-foundation.org (localhost [127.0.0.1]) by smtp1.linux-foundation.org (8.14.2/8.13.5/Debian-3ubuntu1.1) with ESMTP id p7GE0dgf031608; Tue, 16 Aug 2011 07:01:05 -0700 Received: from mail-wy0-f175.google.com (mail-wy0-f175.google.com [74.125.82.175]) by smtp1.linux-foundation.org (8.14.2/8.13.5/Debian-3ubuntu1.1) with ESMTP id p7GDhiCg027698 (version=TLSv1/SSLv3 cipher=RC4-SHA bits=128 verify=FAIL) for ; Tue, 16 Aug 2011 06:44:11 -0700 Received: by mail-wy0-f175.google.com with SMTP id 19so95702wyf.6 for ; Tue, 16 Aug 2011 06:44:11 -0700 (PDT) Received: by 10.227.203.2 with SMTP id fg2mr4493848wbb.65.1313502250966; Tue, 16 Aug 2011 06:44:10 -0700 (PDT) Received: from localhost.localdomain (189.232-245-81.adsl-dyn.isp.belgacom.be [81.245.232.189]) by mx.google.com with ESMTPS id ek1sm48288wbb.11.2011.08.16.06.44.08 (version=TLSv1/SSLv3 cipher=OTHER); Tue, 16 Aug 2011 06:44:10 -0700 (PDT) From: jean.pihet@newoldbits.com To: Mark Brown , Kevin Hilman , markgross@thegnar.org, Linux PM mailing list , linux-omap@vger.kernel.org, "Rafael J. Wysocki" , Paul Walmsley , Magnus Damm , Todd Poynor Date: Tue, 16 Aug 2011 15:43:16 +0200 Message-Id: <1313502198-9298-14-git-send-email-j-pihet@ti.com> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: <1313502198-9298-1-git-send-email-j-pihet@ti.com> References: <1313502198-9298-1-git-send-email-j-pihet@ti.com> Received-SPF: pass (localhost is always allowed.) X-Spam-Status: No, hits=-3.976 required=5 tests=AWL, BAYES_00, OSDL_HEADER_SUBJECT_BRACKETED X-Spam-Checker-Version: SpamAssassin 3.2.4-osdl_revision__1.47__ X-MIMEDefang-Filter: lf$Revision: 1.188 $ X-Scanned-By: MIMEDefang 2.63 on 140.211.169.21 Cc: Jean Pihet Subject: [linux-pm] [PATCH 13/15] OMAP2+: omap_hwmod: manage the wake-up latency constraints X-BeenThere: linux-pm@lists.linux-foundation.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: Linux power management List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: linux-pm-bounces@lists.linux-foundation.org Errors-To: linux-pm-bounces@lists.linux-foundation.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, 16 Aug 2011 14:03:34 +0000 (UTC) From: Jean Pihet Hwmod is queried from the OMAP_PM layer to manage the power domains wake-up latency constraints. Hwmod retrieves the correct power domain and if it exists it calls the corresponding power domain function. Tested on OMAP3 Beagleboard and OMAP4 Pandaboard in RET/OFF using wake-up latency constraints on MPU, CORE and PER. Signed-off-by: Jean Pihet --- arch/arm/mach-omap2/omap_hwmod.c | 26 +++++++++++++++++++++++++- arch/arm/plat-omap/include/plat/omap_hwmod.h | 2 ++ 2 files changed, 27 insertions(+), 1 deletions(-) diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c index 84cc0bd..c6b1cc9 100644 --- a/arch/arm/mach-omap2/omap_hwmod.c +++ b/arch/arm/mach-omap2/omap_hwmod.c @@ -143,6 +143,7 @@ #include "powerdomain.h" #include #include +#include #include #include "cm2xxx_3xxx.h" @@ -2618,11 +2619,34 @@ ohsps_unlock: return ret; } +/* + * omap_hwmod_set_wkup_constraint- set/release a wake-up latency constraint + * + * @oh: struct omap_hwmod* to which the target device belongs to. + * @cookie: identifier of the constraints list for @oh. + * @min_latency: the minimum allowed wake-up latency for @oh. + * + * Returns 0 upon success. + */ +int omap_hwmod_set_wkup_lat_constraint(struct omap_hwmod *oh, + void *cookie, long min_latency) +{ + struct powerdomain *pwrdm = omap_hwmod_get_pwrdm(oh); + + if (!pwrdm) { + pr_err("%s: Error: could not find powerdomain " + "for %s\n", __func__, oh->name); + return -EINVAL; + } + + return pwrdm_set_wkup_lat_constraint(pwrdm, cookie, min_latency); +} + /** * omap_hwmod_get_context_loss_count - get lost context count * @oh: struct omap_hwmod * * - * Query the powerdomain of of @oh to get the context loss + * Query the powerdomain of @oh to get the context loss * count for this device. * * Returns the context loss count of the powerdomain assocated with @oh diff --git a/arch/arm/plat-omap/include/plat/omap_hwmod.h b/arch/arm/plat-omap/include/plat/omap_hwmod.h index 0e329ca..75e0e7a 100644 --- a/arch/arm/plat-omap/include/plat/omap_hwmod.h +++ b/arch/arm/plat-omap/include/plat/omap_hwmod.h @@ -603,6 +603,8 @@ int omap_hwmod_for_each_by_class(const char *classname, void *user); int omap_hwmod_set_postsetup_state(struct omap_hwmod *oh, u8 state); +int omap_hwmod_set_wkup_lat_constraint(struct omap_hwmod *oh, void *cookie, + long min_latency); u32 omap_hwmod_get_context_loss_count(struct omap_hwmod *oh); int omap_hwmod_no_setup_reset(struct omap_hwmod *oh);