From patchwork Fri Jun 29 06:40:08 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Manoharan, Rajkumar" X-Patchwork-Id: 1130741 Return-Path: X-Original-To: patchwork-linux-wireless@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork2.kernel.org (Postfix) with ESMTP id 0E868DFF34 for ; Fri, 29 Jun 2012 06:39:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751576Ab2F2GjX (ORCPT ); Fri, 29 Jun 2012 02:39:23 -0400 Received: from wolverine01.qualcomm.com ([199.106.114.254]:29285 "EHLO wolverine01.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751319Ab2F2GjW (ORCPT ); Fri, 29 Jun 2012 02:39:22 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=qca.qualcomm.com; i=@qca.qualcomm.com; q=dns/txt; s=qcdkim; t=1340951962; x=1372487962; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version; bh=vwy5KQYkXRPI46GG/BzWULNu0x1guQz3sRWDMssReaQ=; b=KVonjtEKNveOe9bBqMLiLRUCHSfCt/g01YOJqOpL6Cuw13BYkp78h5nJ ozd3yl9qmFhgCMh3+MGFoiUHaCO/iA5gPNaOrb4PKxZTz+W700bL2TiXg 20AVKCrzdbQ/TRAMp1e6x0x2TJWiYBaq27kEvyHuqaOotFojOkAjuO/bZ 0=; X-IronPort-AV: E=McAfee;i="5400,1158,6756"; a="205857525" Received: from ironmsg02-l.qualcomm.com ([172.30.48.16]) by wolverine01.qualcomm.com with ESMTP; 28 Jun 2012 23:39:22 -0700 X-IronPort-AV: E=Sophos;i="4.77,496,1336374000"; d="scan'208";a="121550550" Received: from nasanexhc04.na.qualcomm.com ([172.30.48.17]) by ironmsg02-L.qualcomm.com with ESMTP/TLS/RC4-SHA; 28 Jun 2012 23:39:22 -0700 Received: from qcmail1.qualcomm.com (172.30.48.1) by qcmail1.qualcomm.com (172.30.48.17) with Microsoft SMTP Server (TLS) id 14.2.283.3; Thu, 28 Jun 2012 23:39:20 -0700 Received: by qcmail1.qualcomm.com (sSMTP sendmail emulation); Fri, 29 Jun 2012 12:10:42 +0530 From: Rajkumar Manoharan To: CC: , Rajkumar Manoharan Subject: [PATCH 4/5] ath9k: fix power consumption on network sleep when BTCOEX is enabled Date: Fri, 29 Jun 2012 12:10:08 +0530 Message-ID: <1340952009-12223-4-git-send-email-rmanohar@qca.qualcomm.com> X-Mailer: git-send-email 1.7.11.1 In-Reply-To: <1340952009-12223-1-git-send-email-rmanohar@qca.qualcomm.com> References: <1340952009-12223-1-git-send-email-rmanohar@qca.qualcomm.com> MIME-Version: 1.0 X-Originating-IP: [172.30.48.1] Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org The chip is waken up for every 45ms in btcoex timer cycle to for sharing the radio between BT and WLAN. Whenever the wlan interface is in network sleep mode, do not schedule hw timers. This could reduce power consumption on idle associated state. Signed-off-by: Rajkumar Manoharan --- drivers/net/wireless/ath/ath9k/gpio.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/net/wireless/ath/ath9k/gpio.c b/drivers/net/wireless/ath/ath9k/gpio.c index 9ae6a4d..c17168e 100644 --- a/drivers/net/wireless/ath/ath9k/gpio.c +++ b/drivers/net/wireless/ath/ath9k/gpio.c @@ -194,6 +194,16 @@ static void ath_btcoex_period_timer(unsigned long data) struct ath_mci_profile *mci = &btcoex->mci; u32 timer_period; bool is_btscan; + unsigned long flags; + + spin_lock_irqsave(&sc->sc_pm_lock, flags); + if (sc->sc_ah->power_mode == ATH9K_PM_NETWORK_SLEEP) { + spin_unlock_irqrestore(&sc->sc_pm_lock, flags); + if (btcoex->hw_timer_enabled) + ath9k_gen_timer_stop(ah, btcoex->no_stomp_timer); + goto skip_hw_wakeup; + } + spin_unlock_irqrestore(&sc->sc_pm_lock, flags); ath9k_ps_wakeup(sc); if (!(ah->caps.hw_caps & ATH9K_HW_CAP_MCI)) @@ -232,6 +242,7 @@ static void ath_btcoex_period_timer(unsigned long data) } ath9k_ps_restore(sc); +skip_hw_wakeup: timer_period = btcoex->btcoex_period; mod_timer(&btcoex->period_timer, jiffies + msecs_to_jiffies(timer_period)); }