From patchwork Fri Apr 21 17:29:01 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 9693287 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 340FE601D4 for ; Fri, 21 Apr 2017 17:58:59 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2A08128660 for ; Fri, 21 Apr 2017 17:58:59 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 1F16E2866A; Fri, 21 Apr 2017 17:58:59 +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=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI 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 847D028668 for ; Fri, 21 Apr 2017 17:58:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1423110AbdDUR64 (ORCPT ); Fri, 21 Apr 2017 13:58:56 -0400 Received: from mezzanine.sirena.org.uk ([106.187.55.193]:57656 "EHLO mezzanine.sirena.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1423103AbdDUR6y (ORCPT ); Fri, 21 Apr 2017 13:58:54 -0400 Received: from [2001:470:1f1d:6b5::3] (helo=debutante) by mezzanine.sirena.org.uk with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.84_2) (envelope-from ) id 1d1cMi-0003JU-Ob; Fri, 21 Apr 2017 17:29:07 +0000 Received: from broonie by debutante with local (Exim 4.89) (envelope-from ) id 1d1cMf-0002AE-TU; Fri, 21 Apr 2017 18:29:01 +0100 From: Mark Brown To: Vignesh R Cc: Mark Brown , Mark Brown , linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org, linux-spi@vger.kernel.org In-Reply-To: <20170331114950.21489-2-vigneshr@ti.com> Message-Id: Date: Fri, 21 Apr 2017 18:29:01 +0100 X-SA-Exim-Connect-IP: 2001:470:1f1d:6b5::3 X-SA-Exim-Mail-From: broonie@sirena.org.uk Subject: Applied "spi: Add can_dma like interface for spi_flash_read" to the spi tree X-SA-Exim-Version: 4.2.1 (built Mon, 26 Dec 2011 16:24:06 +0000) X-SA-Exim-Scanned: No (on mezzanine.sirena.org.uk); Unknown failure Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The patch spi: Add can_dma like interface for spi_flash_read has been applied to the spi tree at git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted. You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed. If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced. Please add any relevant lists and maintainers to the CCs when replying to this mail. Thanks, Mark From 2bca34455b257d75080d87e800ae14afe49001bf Mon Sep 17 00:00:00 2001 From: Vignesh R Date: Tue, 11 Apr 2017 17:22:24 +0530 Subject: [PATCH] spi: Add can_dma like interface for spi_flash_read Add an interface analogous to ->can_dma() for spi_flash_read() interface. This will enable SPI controller drivers to inform SPI core when not to do DMA mappings. Signed-off-by: Vignesh R Signed-off-by: Mark Brown --- drivers/spi/spi.c | 2 +- include/linux/spi/spi.h | 4 ++++ 2 files changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 656dd3e3220c..5e1bb43b8a8f 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -2811,7 +2811,7 @@ int spi_flash_read(struct spi_device *spi, mutex_lock(&master->bus_lock_mutex); mutex_lock(&master->io_mutex); - if (master->dma_rx) { + if (master->dma_rx && master->spi_flash_can_dma(spi, msg)) { rx_dev = master->dma_rx->device->dev; ret = spi_map_buf(master, rx_dev, &msg->rx_sg, msg->buf, msg->len, diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index 75c6bd0ac605..cd8ae65568e3 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -375,6 +375,8 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv) * @unprepare_message: undo any work done by prepare_message(). * @spi_flash_read: to support spi-controller hardwares that provide * accelerated interface to read from flash devices. + * @spi_flash_can_dma: analogous to can_dma() interface, but for + * controllers implementing spi_flash_read. * @flash_read_supported: spi device supports flash read * @cs_gpios: Array of GPIOs to use as chip select lines; one per CS * number. Any individual value may be -ENOENT for CS lines that @@ -538,6 +540,8 @@ struct spi_master { struct spi_message *message); int (*spi_flash_read)(struct spi_device *spi, struct spi_flash_read_message *msg); + bool (*spi_flash_can_dma)(struct spi_device *spi, + struct spi_flash_read_message *msg); bool (*flash_read_supported)(struct spi_device *spi); /*