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: 1071432 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter1.kernel.org (8.14.4/8.14.4) with ESMTP id p7GDiErF010208 for ; Tue, 16 Aug 2011 13:44:14 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752656Ab1HPNoN (ORCPT ); Tue, 16 Aug 2011 09:44:13 -0400 Received: from mail-wy0-f174.google.com ([74.125.82.174]:44958 "EHLO mail-wy0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752719Ab1HPNoM (ORCPT ); Tue, 16 Aug 2011 09:44:12 -0400 Received: by mail-wy0-f174.google.com with SMTP id 24so81627wyg.19 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 Cc: Jean Pihet Subject: [PATCH 13/15] OMAP2+: omap_hwmod: manage the wake-up latency constraints 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> 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, 16 Aug 2011 13:44:19 +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);