From patchwork Mon Jul 24 07:47:15 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Varadarajan Narayanan X-Patchwork-Id: 9858975 X-Patchwork-Delegate: agross@codeaurora.org Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 3EEC9600F5 for ; Mon, 24 Jul 2017 07:52:08 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 30B4828558 for ; Mon, 24 Jul 2017 07:52:08 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 2590D2858A; Mon, 24 Jul 2017 07:52:08 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI,T_DKIM_INVALID autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C816228558 for ; Mon, 24 Jul 2017 07:52:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753065AbdGXHvj (ORCPT ); Mon, 24 Jul 2017 03:51:39 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:59146 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752437AbdGXHr5 (ORCPT ); Mon, 24 Jul 2017 03:47:57 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id C51A2609FD; Mon, 24 Jul 2017 07:47:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1500882476; bh=am32CTz2GZgEnv34Nv3TLdrnfFOascrmLHB3eHasbhM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OqLyO7rMqla/5q27x/ZSAuch1p7Qn4X1PtHNvjKIdC/dETspuci0xpPX5MTF66ZVj 0m50q72MRfC3N9HesPDHenZwrV7l1HX05lgJGIkQFcP9CmClnvoM5hjLPo/gHanUAQ R/C/0KQsmbnafn3M2nmh4US19xO2C0i5+suWF2Q0= Received: from varda-linux.qualcomm.com (blr-c-bdr-fw-01_globalnat_allzones-outside.qualcomm.com [103.229.19.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: varada@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id 5BD0560B62; Mon, 24 Jul 2017 07:47:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1500882476; bh=am32CTz2GZgEnv34Nv3TLdrnfFOascrmLHB3eHasbhM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OqLyO7rMqla/5q27x/ZSAuch1p7Qn4X1PtHNvjKIdC/dETspuci0xpPX5MTF66ZVj 0m50q72MRfC3N9HesPDHenZwrV7l1HX05lgJGIkQFcP9CmClnvoM5hjLPo/gHanUAQ R/C/0KQsmbnafn3M2nmh4US19xO2C0i5+suWF2Q0= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 5BD0560B62 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=varada@codeaurora.org From: Varadarajan Narayanan To: broonie@kernel.org, robh+dt@kernel.org, mark.rutland@arm.com, andy.gross@linaro.org, david.brown@linaro.org, linux-spi@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-soc@vger.kernel.org Cc: Varadarajan Narayanan Subject: [PATCH v5 04/14] spi: qup: Place the QUP in run mode before DMA Date: Mon, 24 Jul 2017 13:17:15 +0530 Message-Id: <1500882445-29008-5-git-send-email-varada@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1500882445-29008-1-git-send-email-varada@codeaurora.org> References: <1500882445-29008-1-git-send-email-varada@codeaurora.org> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Signed-off-by: Andy Gross Signed-off-by: Varadarajan Narayanan --- drivers/spi/spi-qup.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/spi/spi-qup.c b/drivers/spi/spi-qup.c index 92922b6..e6294f8 100644 --- a/drivers/spi/spi-qup.c +++ b/drivers/spi/spi-qup.c @@ -342,6 +342,14 @@ static int spi_qup_do_dma(struct spi_master *master, struct spi_transfer *xfer, else if (xfer->tx_buf) tx_done = spi_qup_dma_done; + /* before issuing the descriptors, set the QUP to run */ + ret = spi_qup_set_state(qup, QUP_STATE_RUN); + if (ret) { + dev_warn(qup->dev, "%s(%d): cannot set RUN state\n", + __func__, __LINE__); + return ret; + } + if (xfer->rx_buf) { ret = spi_qup_prep_sg(master, xfer, DMA_DEV_TO_MEM, rx_done); if (ret) @@ -387,6 +395,13 @@ static int spi_qup_do_pio(struct spi_master *master, struct spi_transfer *xfer, spi_qup_fifo_write(qup, xfer); + ret = spi_qup_set_state(qup, QUP_STATE_RUN); + if (ret) { + dev_warn(qup->dev, "%s(%d): cannot set RUN state\n", + __func__, __LINE__); + return ret; + } + if (!wait_for_completion_timeout(&qup->done, timeout)) return -ETIMEDOUT;