From patchwork Fri May 31 09:19:13 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Linus Walleij X-Patchwork-Id: 2642151 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) by patchwork1.kernel.org (Postfix) with ESMTP id A71D53FD4E for ; Fri, 31 May 2013 10:35:52 +0000 (UTC) Received: from merlin.infradead.org ([205.233.59.134]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UiLjm-0000Kz-Fb; Fri, 31 May 2013 09:35:11 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1UiLbv-0004G3-7a; Fri, 31 May 2013 09:26:59 +0000 Received: from eu1sys200aog119.obsmtp.com ([207.126.144.147]) by merlin.infradead.org with smtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UiLWn-0003qt-BS for linux-arm-kernel@lists.infradead.org; Fri, 31 May 2013 09:21:43 +0000 Received: from beta.dmz-us.st.com ([167.4.1.35]) (using TLSv1) by eu1sys200aob119.postini.com ([207.126.147.11]) with SMTP ID DSNKUahrjS6TqzaFilARpznT1EVZLMEsGKMy@postini.com; Fri, 31 May 2013 09:21:41 UTC Received: from zeta.dmz-us.st.com (ns4.st.com [167.4.16.71]) by beta.dmz-us.st.com (STMicroelectronics) with ESMTP id 1489F55; Fri, 31 May 2013 09:20:16 +0000 (GMT) Received: from relay1.stm.gmessaging.net (unknown [10.230.100.17]) by zeta.dmz-us.st.com (STMicroelectronics) with ESMTP id 4C3EF57; Fri, 31 May 2013 09:21:16 +0000 (GMT) Received: from exdcvycastm003.EQ1STM.local (alteon-source-exch [10.230.100.61]) (using TLSv1 with cipher RC4-MD5 (128/128 bits)) (Client CN "exdcvycastm003", Issuer "exdcvycastm003" (not verified)) by relay1.stm.gmessaging.net (Postfix) with ESMTPS id B7DE024C07C; Fri, 31 May 2013 11:21:10 +0200 (CEST) Received: from steludxu4075.lud.stericsson.com (10.230.100.153) by smtp.stericsson.com (10.230.100.1) with Microsoft SMTP Server (TLS) id 8.3.279.5; Fri, 31 May 2013 11:21:15 +0200 From: Linus Walleij To: Subject: [PATCH 38/39] spi: pl022: use DMA by default when probing from DT Date: Fri, 31 May 2013 11:19:13 +0200 Message-ID: <1369991954-17406-39-git-send-email-linus.walleij@stericsson.com> X-Mailer: git-send-email 1.7.11.3 In-Reply-To: <1369991954-17406-1-git-send-email-linus.walleij@stericsson.com> References: <1369991954-17406-1-git-send-email-linus.walleij@stericsson.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130531_052141_674401_B95A9C49 X-CRM114-Status: GOOD ( 12.13 ) X-Spam-Score: -4.2 (----) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-4.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at http://www.dnswl.org/, medium trust [207.126.144.147 listed in list.dnswl.org] -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: Linus Walleij , Arnd Bergmann 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 From: Linus Walleij In the past we controlled the selection of DMA for a certain host by a boolean switch in the platform data. Currently there is no way to enable DMA on a PL022 probed from the device tree. Let's default to trying to obtain DMA channels in the DT case, and then we can always fail (and thus fall back to PIO mode). Signed-off-by: Linus Walleij --- drivers/spi/spi-pl022.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/spi/spi-pl022.c b/drivers/spi/spi-pl022.c index 371cc66f..3b24654 100644 --- a/drivers/spi/spi-pl022.c +++ b/drivers/spi/spi-pl022.c @@ -2083,6 +2083,7 @@ pl022_platform_data_dt_get(struct device *dev) } pd->bus_id = -1; + pd->enable_dma = 1; of_property_read_u32(np, "num-cs", &tmp); pd->num_chipselect = tmp; of_property_read_u32(np, "pl022,autosuspend-delay",