Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752041AbdG1GzT (ORCPT ); Fri, 28 Jul 2017 02:55:19 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:35978 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751163AbdG1Gxu (ORCPT ); Fri, 28 Jul 2017 02:53:50 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 89F8A60A97 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 , Matthew McClintock Subject: [PATCH v6 09/14] spi: qup: call io_config in mode specific function Date: Fri, 28 Jul 2017 12:22:56 +0530 Message-Id: <1501224781-19519-10-git-send-email-varada@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1501224781-19519-1-git-send-email-varada@codeaurora.org> References: <1501224781-19519-1-git-send-email-varada@codeaurora.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3367 Lines: 96 DMA transactions should only only need to call io_config only once, but block mode might call it several times to setup several transactions so it can handle reads/writes larger than the max size per transaction, so we move the call to the do_ functions. This is just refactoring, there should be no functional change Signed-off-by: Matthew McClintock Signed-off-by: Varadarajan Narayanan --- drivers/spi/spi-qup.c | 26 +++++++++++++++++--------- 1 file changed, 17 insertions(+), 9 deletions(-) diff --git a/drivers/spi/spi-qup.c b/drivers/spi/spi-qup.c index ff5aa08..1aa6078 100644 --- a/drivers/spi/spi-qup.c +++ b/drivers/spi/spi-qup.c @@ -156,6 +156,8 @@ struct spi_qup { struct dma_slave_config tx_conf; }; +static int spi_qup_io_config(struct spi_device *spi, struct spi_transfer *xfer); + static inline bool spi_qup_is_flag_set(struct spi_qup *controller, u32 flag) { u32 opflag = readl_relaxed(controller->base + QUP_OPERATIONAL); @@ -417,11 +419,12 @@ static void spi_qup_dma_terminate(struct spi_master *master, dmaengine_terminate_all(master->dma_rx); } -static int spi_qup_do_dma(struct spi_master *master, struct spi_transfer *xfer, +static int spi_qup_do_dma(struct spi_device *spi, struct spi_transfer *xfer, unsigned long timeout) { - struct spi_qup *qup = spi_master_get_devdata(master); dma_async_tx_callback rx_done = NULL, tx_done = NULL; + struct spi_master *master = spi->master; + struct spi_qup *qup = spi_master_get_devdata(master); int ret; if (xfer->rx_buf) @@ -429,6 +432,10 @@ 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; + ret = spi_qup_io_config(spi, xfer); + if (ret) + return ret; + /* before issuing the descriptors, set the QUP to run */ ret = spi_qup_set_state(qup, QUP_STATE_RUN); if (ret) { @@ -459,12 +466,17 @@ static int spi_qup_do_dma(struct spi_master *master, struct spi_transfer *xfer, return 0; } -static int spi_qup_do_pio(struct spi_master *master, struct spi_transfer *xfer, +static int spi_qup_do_pio(struct spi_device *spi, struct spi_transfer *xfer, unsigned long timeout) { + struct spi_master *master = spi->master; struct spi_qup *qup = spi_master_get_devdata(master); int ret; + ret = spi_qup_io_config(spi, xfer); + if (ret) + return ret; + ret = spi_qup_set_state(qup, QUP_STATE_RUN); if (ret) { dev_warn(qup->dev, "cannot set RUN state\n"); @@ -742,10 +754,6 @@ static int spi_qup_transfer_one(struct spi_master *master, if (ret) return ret; - ret = spi_qup_io_config(spi, xfer); - if (ret) - return ret; - timeout = DIV_ROUND_UP(xfer->speed_hz, MSEC_PER_SEC); timeout = DIV_ROUND_UP(xfer->len * 8, timeout); timeout = 100 * msecs_to_jiffies(timeout); @@ -760,9 +768,9 @@ static int spi_qup_transfer_one(struct spi_master *master, spin_unlock_irqrestore(&controller->lock, flags); if (spi_qup_is_dma_xfer(controller->mode)) - ret = spi_qup_do_dma(master, xfer, timeout); + ret = spi_qup_do_dma(spi, xfer, timeout); else - ret = spi_qup_do_pio(master, xfer, timeout); + ret = spi_qup_do_pio(spi, xfer, timeout); if (ret) goto exit; -- QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation