From patchwork Fri Mar 7 12:16:08 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: R Sricharan X-Patchwork-Id: 3790271 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 1E632BF540 for ; Fri, 7 Mar 2014 12:18:12 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 529D420274 for ; Fri, 7 Mar 2014 12:18:11 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 54F582024C for ; Fri, 7 Mar 2014 12:18:10 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WLtii-0004IW-49; Fri, 07 Mar 2014 12:17:44 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1WLtid-00071h-Pm; Fri, 07 Mar 2014 12:17:39 +0000 Received: from bombadil.infradead.org ([2001:1868:205::9]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WLtiT-000709-Fk for linux-arm-kernel@merlin.infradead.org; Fri, 07 Mar 2014 12:17:29 +0000 Received: from bear.ext.ti.com ([192.94.94.41]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WLtiR-0004NF-Gz for linux-arm-kernel@lists.infradead.org; Fri, 07 Mar 2014 12:17:28 +0000 Received: from dflxv15.itg.ti.com ([128.247.5.124]) by bear.ext.ti.com (8.13.7/8.13.7) with ESMTP id s27CGrIf002985; Fri, 7 Mar 2014 06:16:53 -0600 Received: from DLEE70.ent.ti.com (dlee70.ent.ti.com [157.170.170.113]) by dflxv15.itg.ti.com (8.14.3/8.13.8) with ESMTP id s27CGrKQ001004; Fri, 7 Mar 2014 06:16:53 -0600 Received: from dflp32.itg.ti.com (10.64.6.15) by DLEE70.ent.ti.com (157.170.170.113) with Microsoft SMTP Server id 14.3.174.1; Fri, 7 Mar 2014 06:16:52 -0600 Received: from localhost.localdomain (ileax41-snat.itg.ti.com [10.172.224.153]) by dflp32.itg.ti.com (8.14.3/8.13.8) with ESMTP id s27CGhvw003967; Fri, 7 Mar 2014 06:16:48 -0600 From: Sricharan R To: , , , , , Subject: [RFC PATCH 1/9] drivers: dma: omap-dma: Avoid hard-coding of the dma-request channels Date: Fri, 7 Mar 2014 17:46:08 +0530 Message-ID: <1394194576-23741-2-git-send-email-r.sricharan@ti.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1394194576-23741-1-git-send-email-r.sricharan@ti.com> References: <1394194576-23741-1-git-send-email-r.sricharan@ti.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140307_041727_654768_FD29C87C X-CRM114-Status: UNSURE ( 8.52 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -5.0 (-----) Cc: nm@ti.com, linux@arm.linux.org.uk, tony@atomide.com, rnayak@ti.com, nsekhar@ti.com, vinod.koul@intel.com, santosh.shilimkar@ti.com, dan.j.williams@intel.com X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The total number of dma-request channels is hard-coded. Instead read the data from DT. Signed-off-by: Sricharan R --- drivers/dma/omap-dma.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/dma/omap-dma.c b/drivers/dma/omap-dma.c index 64ceca2..a0d6639 100644 --- a/drivers/dma/omap-dma.c +++ b/drivers/dma/omap-dma.c @@ -1093,6 +1093,7 @@ static int omap_dma_probe(struct platform_device *pdev) struct omap_dmadev *od; struct resource *res; int rc, i, irq; + u32 reqs; od = devm_kzalloc(&pdev->dev, sizeof(*od), GFP_KERNEL); if (!od) @@ -1126,7 +1127,9 @@ static int omap_dma_probe(struct platform_device *pdev) tasklet_init(&od->task, omap_dma_sched, (unsigned long)od); - for (i = 0; i < 127; i++) { + of_property_read_u32(pdev->dev.of_node, "#dma-requests", &reqs); + + for (i = 0; i < reqs; i++) { rc = omap_dma_chan_init(od, i); if (rc) { omap_dma_free(od);