From patchwork Mon Aug 1 09:37:18 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Viresh KUMAR X-Patchwork-Id: 1025622 Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by demeter1.kernel.org (8.14.4/8.14.4) with ESMTP id p719oJZL005162 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Mon, 1 Aug 2011 09:50:40 GMT Received: from canuck.infradead.org ([2001:4978:20e::1]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1Qnp7p-0006af-Fr; Mon, 01 Aug 2011 09:49:34 +0000 Received: from localhost ([127.0.0.1] helo=canuck.infradead.org) by canuck.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1Qnp0N-0005uh-18; Mon, 01 Aug 2011 09:41:47 +0000 Received: from eu1sys200aog112.obsmtp.com ([207.126.144.133]) by canuck.infradead.org with smtps (Exim 4.76 #1 (Red Hat Linux)) id 1Qnoy3-0005BK-VP for linux-arm-kernel@lists.infradead.org; Mon, 01 Aug 2011 09:39:28 +0000 Received: from beta.dmz-ap.st.com ([138.198.100.35]) (using TLSv1) by eu1sys200aob112.postini.com ([207.126.147.11]) with SMTP ID DSNKTjZ0QfysQu/amA6dgUEftLY34rZBLYKP@postini.com; Mon, 01 Aug 2011 09:39:23 UTC Received: from zeta.dmz-ap.st.com (ns6.st.com [138.198.234.13]) by beta.dmz-ap.st.com (STMicroelectronics) with ESMTP id 90246106; Mon, 1 Aug 2011 09:39:10 +0000 (GMT) Received: from Webmail-ap.st.com (eapex1hubcas1.st.com [10.80.176.8]) by zeta.dmz-ap.st.com (STMicroelectronics) with ESMTP id 77F9962D; Mon, 1 Aug 2011 09:39:10 +0000 (GMT) Received: from localhost (10.199.88.156) by Webmail-ap.st.com (10.80.176.7) with Microsoft SMTP Server (TLS) id 8.2.234.1; Mon, 1 Aug 2011 17:39:09 +0800 From: Viresh Kumar To: Subject: [PATCH V2 08/20] dmaengine/amba-pl08x: support runtime PM Date: Mon, 1 Aug 2011 15:07:18 +0530 Message-ID: X-Mailer: git-send-email 1.7.2.2 In-Reply-To: References: MIME-Version: 1.0 X-CRM114-Version: 20090807-BlameThorstenAndJenny ( TRE 0.7.6 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20110801_053924_383090_4202B209 X-CRM114-Status: GOOD ( 17.17 ) X-Spam-Score: -2.3 (--) X-Spam-Report: SpamAssassin version 3.3.1 on canuck.infradead.org summary: Content analysis details: (-2.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at http://www.dnswl.org/, medium trust [207.126.144.133 listed in list.dnswl.org] Cc: pratyush.anand@st.com, rajeev-dlh.kumar@st.com, linux@arm.linux.org.uk, bhupesh.sharma@st.com, shiraz.hashim@st.com, vinod.koul@intel.com, linux-kernel@vger.kernel.org, vipin.kumar@st.com, armando.visconti@st.com, amit.virdi@st.com, vipulkumar.samar@st.com, viresh.linux@gmail.com, deepak.sikri@st.com, dan.j.williams@intel.com, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.12 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 X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.6 (demeter1.kernel.org [140.211.167.41]); Mon, 01 Aug 2011 09:50:40 +0000 (UTC) Insert notifiers for the runtime PM API. With this the runtime PM layer kicks in to action where used. This will also handle enabling/disabling of interface clock (Code will be added in amba/bus.c by Russell King). Signed-off-by: Viresh Kumar --- drivers/dma/amba-pl08x.c | 11 +++++++++++ 1 files changed, 11 insertions(+), 0 deletions(-) diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c index 3fbaf0e..428a67b 100644 --- a/drivers/dma/amba-pl08x.c +++ b/drivers/dma/amba-pl08x.c @@ -84,6 +84,7 @@ #include #include #include +#include #include #include #include @@ -879,11 +880,19 @@ static void pl08x_free_txd_list(struct pl08x_driver_data *pl08x, */ static int pl08x_alloc_chan_resources(struct dma_chan *chan) { + struct pl08x_dma_chan *plchan = to_pl08x_chan(chan); + struct pl08x_driver_data *pl08x = plchan->host; + + pm_runtime_resume(&pl08x->adev->dev); return 0; } static void pl08x_free_chan_resources(struct dma_chan *chan) { + struct pl08x_dma_chan *plchan = to_pl08x_chan(chan); + struct pl08x_driver_data *pl08x = plchan->host; + + pm_runtime_suspend(&pl08x->adev->dev); } /* @@ -1993,6 +2002,8 @@ static int pl08x_probe(struct amba_device *adev, const struct amba_id *id) dev_info(&pl08x->adev->dev, "DMA: PL%03x rev%u at 0x%08llx irq %d\n", amba_part(adev), amba_rev(adev), (unsigned long long)adev->res.start, adev->irq[0]); + + pm_runtime_suspend(&adev->dev); return 0; out_no_slave_reg: