From: Vladimir Oltean <olteanv@gmail.com> To: broonie@kernel.org Cc: linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org, shawnguo@kernel.org, robh+dt@kernel.org, mark.rutland@arm.com, devicetree@vger.kernel.org, eha@deif.com, angelo@sysam.it, andrew.smirnov@gmail.com, gustavo@embeddedor.com, weic@nvidia.com, mhosny@nvidia.com, michael@walle.cc, peng.ma@nxp.com Subject: [PATCH v5 09/12] spi: spi-fsl-dspi: Move invariant configs out of dspi_transfer_one_message Date: Wed, 18 Mar 2020 02:16:00 +0200 [thread overview] Message-ID: <20200318001603.9650-10-olteanv@gmail.com> (raw) In-Reply-To: <20200318001603.9650-1-olteanv@gmail.com> From: Vladimir Oltean <vladimir.oltean@nxp.com> The operating mode (DMA, XSPI, EOQ) is not going to change across the lifetime of the device. So it makes no sense to keep writing to SPI_RSER on each message. Move this configuration to dspi_init instead. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> --- Changes in v5: None. Changes in v4: Patch is new. drivers/spi/spi-fsl-dspi.c | 55 ++++++++++++++++++++------------------ 1 file changed, 29 insertions(+), 26 deletions(-) diff --git a/drivers/spi/spi-fsl-dspi.c b/drivers/spi/spi-fsl-dspi.c index fcc6f20b6631..5873752a091e 100644 --- a/drivers/spi/spi-fsl-dspi.c +++ b/drivers/spi/spi-fsl-dspi.c @@ -900,7 +900,6 @@ static int dspi_transfer_one_message(struct spi_controller *ctlr, { struct fsl_dspi *dspi = spi_controller_get_devdata(ctlr); struct spi_device *spi = message->spi; - enum dspi_trans_mode trans_mode; struct spi_transfer *transfer; int status = 0; @@ -942,30 +941,11 @@ static int dspi_transfer_one_message(struct spi_controller *ctlr, spi_take_timestamp_pre(dspi->ctlr, dspi->cur_transfer, dspi->progress, !dspi->irq); - trans_mode = dspi->devtype_data->trans_mode; - switch (trans_mode) { - case DSPI_EOQ_MODE: - regmap_write(dspi->regmap, SPI_RSER, SPI_RSER_EOQFE); - dspi_fifo_write(dspi); - break; - case DSPI_XSPI_MODE: - regmap_write(dspi->regmap, SPI_RSER, SPI_RSER_CMDTCFE); - dspi_fifo_write(dspi); - break; - case DSPI_DMA_MODE: - regmap_write(dspi->regmap, SPI_RSER, - SPI_RSER_TFFFE | SPI_RSER_TFFFD | - SPI_RSER_RFDFE | SPI_RSER_RFDFD); + if (dspi->devtype_data->trans_mode == DSPI_DMA_MODE) { status = dspi_dma_xfer(dspi); - break; - default: - dev_err(&dspi->pdev->dev, "unsupported trans_mode %u\n", - trans_mode); - status = -EINVAL; - goto out; - } + } else { + dspi_fifo_write(dspi); - if (trans_mode != DSPI_DMA_MODE) { if (dspi->irq) { wait_for_completion(&dspi->xfer_done); reinit_completion(&dspi->xfer_done); @@ -975,11 +955,12 @@ static int dspi_transfer_one_message(struct spi_controller *ctlr, } while (status == -EINPROGRESS); } } + if (status) + break; spi_transfer_delay_exec(transfer); } -out: message->status = status; spi_finalize_current_message(ctlr); @@ -1170,7 +1151,7 @@ static const struct regmap_config dspi_xspi_regmap_config[] = { }, }; -static void dspi_init(struct fsl_dspi *dspi) +static int dspi_init(struct fsl_dspi *dspi) { unsigned int mcr; @@ -1184,6 +1165,26 @@ static void dspi_init(struct fsl_dspi *dspi) regmap_write(dspi->regmap, SPI_MCR, mcr); regmap_write(dspi->regmap, SPI_SR, SPI_SR_CLEAR); + + switch (dspi->devtype_data->trans_mode) { + case DSPI_EOQ_MODE: + regmap_write(dspi->regmap, SPI_RSER, SPI_RSER_EOQFE); + break; + case DSPI_XSPI_MODE: + regmap_write(dspi->regmap, SPI_RSER, SPI_RSER_CMDTCFE); + break; + case DSPI_DMA_MODE: + regmap_write(dspi->regmap, SPI_RSER, + SPI_RSER_TFFFE | SPI_RSER_TFFFD | + SPI_RSER_RFDFE | SPI_RSER_RFDFD); + break; + default: + dev_err(&dspi->pdev->dev, "unsupported trans_mode %u\n", + dspi->devtype_data->trans_mode); + return -EINVAL; + } + + return 0; } static int dspi_slave_abort(struct spi_master *master) @@ -1339,7 +1340,9 @@ static int dspi_probe(struct platform_device *pdev) if (ret) goto out_ctlr_put; - dspi_init(dspi); + ret = dspi_init(dspi); + if (ret) + goto out_clk_put; dspi->irq = platform_get_irq(pdev, 0); if (dspi->irq <= 0) { -- 2.17.1
WARNING: multiple messages have this Message-ID (diff)
From: Vladimir Oltean <olteanv-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> To: broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org Cc: linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, shawnguo-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, mark.rutland-5wv7dgnIgG8@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, eha-/iRVSOupHO4@public.gmane.org, angelo-BIYBQhTR83Y@public.gmane.org, andrew.smirnov-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, gustavo-L1vi/lXTdts+Va1GwOuvDg@public.gmane.org, weic-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org, mhosny-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org, michael-QKn5cuLxLXY@public.gmane.org, peng.ma-3arQi8VN3Tc@public.gmane.org Subject: [PATCH v5 09/12] spi: spi-fsl-dspi: Move invariant configs out of dspi_transfer_one_message Date: Wed, 18 Mar 2020 02:16:00 +0200 [thread overview] Message-ID: <20200318001603.9650-10-olteanv@gmail.com> (raw) In-Reply-To: <20200318001603.9650-1-olteanv-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> From: Vladimir Oltean <vladimir.oltean-3arQi8VN3Tc@public.gmane.org> The operating mode (DMA, XSPI, EOQ) is not going to change across the lifetime of the device. So it makes no sense to keep writing to SPI_RSER on each message. Move this configuration to dspi_init instead. Signed-off-by: Vladimir Oltean <vladimir.oltean-3arQi8VN3Tc@public.gmane.org> --- Changes in v5: None. Changes in v4: Patch is new. drivers/spi/spi-fsl-dspi.c | 55 ++++++++++++++++++++------------------ 1 file changed, 29 insertions(+), 26 deletions(-) diff --git a/drivers/spi/spi-fsl-dspi.c b/drivers/spi/spi-fsl-dspi.c index fcc6f20b6631..5873752a091e 100644 --- a/drivers/spi/spi-fsl-dspi.c +++ b/drivers/spi/spi-fsl-dspi.c @@ -900,7 +900,6 @@ static int dspi_transfer_one_message(struct spi_controller *ctlr, { struct fsl_dspi *dspi = spi_controller_get_devdata(ctlr); struct spi_device *spi = message->spi; - enum dspi_trans_mode trans_mode; struct spi_transfer *transfer; int status = 0; @@ -942,30 +941,11 @@ static int dspi_transfer_one_message(struct spi_controller *ctlr, spi_take_timestamp_pre(dspi->ctlr, dspi->cur_transfer, dspi->progress, !dspi->irq); - trans_mode = dspi->devtype_data->trans_mode; - switch (trans_mode) { - case DSPI_EOQ_MODE: - regmap_write(dspi->regmap, SPI_RSER, SPI_RSER_EOQFE); - dspi_fifo_write(dspi); - break; - case DSPI_XSPI_MODE: - regmap_write(dspi->regmap, SPI_RSER, SPI_RSER_CMDTCFE); - dspi_fifo_write(dspi); - break; - case DSPI_DMA_MODE: - regmap_write(dspi->regmap, SPI_RSER, - SPI_RSER_TFFFE | SPI_RSER_TFFFD | - SPI_RSER_RFDFE | SPI_RSER_RFDFD); + if (dspi->devtype_data->trans_mode == DSPI_DMA_MODE) { status = dspi_dma_xfer(dspi); - break; - default: - dev_err(&dspi->pdev->dev, "unsupported trans_mode %u\n", - trans_mode); - status = -EINVAL; - goto out; - } + } else { + dspi_fifo_write(dspi); - if (trans_mode != DSPI_DMA_MODE) { if (dspi->irq) { wait_for_completion(&dspi->xfer_done); reinit_completion(&dspi->xfer_done); @@ -975,11 +955,12 @@ static int dspi_transfer_one_message(struct spi_controller *ctlr, } while (status == -EINPROGRESS); } } + if (status) + break; spi_transfer_delay_exec(transfer); } -out: message->status = status; spi_finalize_current_message(ctlr); @@ -1170,7 +1151,7 @@ static const struct regmap_config dspi_xspi_regmap_config[] = { }, }; -static void dspi_init(struct fsl_dspi *dspi) +static int dspi_init(struct fsl_dspi *dspi) { unsigned int mcr; @@ -1184,6 +1165,26 @@ static void dspi_init(struct fsl_dspi *dspi) regmap_write(dspi->regmap, SPI_MCR, mcr); regmap_write(dspi->regmap, SPI_SR, SPI_SR_CLEAR); + + switch (dspi->devtype_data->trans_mode) { + case DSPI_EOQ_MODE: + regmap_write(dspi->regmap, SPI_RSER, SPI_RSER_EOQFE); + break; + case DSPI_XSPI_MODE: + regmap_write(dspi->regmap, SPI_RSER, SPI_RSER_CMDTCFE); + break; + case DSPI_DMA_MODE: + regmap_write(dspi->regmap, SPI_RSER, + SPI_RSER_TFFFE | SPI_RSER_TFFFD | + SPI_RSER_RFDFE | SPI_RSER_RFDFD); + break; + default: + dev_err(&dspi->pdev->dev, "unsupported trans_mode %u\n", + dspi->devtype_data->trans_mode); + return -EINVAL; + } + + return 0; } static int dspi_slave_abort(struct spi_master *master) @@ -1339,7 +1340,9 @@ static int dspi_probe(struct platform_device *pdev) if (ret) goto out_ctlr_put; - dspi_init(dspi); + ret = dspi_init(dspi); + if (ret) + goto out_clk_put; dspi->irq = platform_get_irq(pdev, 0); if (dspi->irq <= 0) { -- 2.17.1
next prev parent reply other threads:[~2020-03-18 0:17 UTC|newest] Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-03-18 0:15 [PATCH v5 00/12] NXP DSPI bugfixes and support for LS1028A Vladimir Oltean 2020-03-18 0:15 ` Vladimir Oltean 2020-03-18 0:15 ` [PATCH v5 01/12] spi: spi-fsl-dspi: Don't access reserved fields in SPI_MCR Vladimir Oltean 2020-03-18 0:15 ` Vladimir Oltean 2020-03-18 0:15 ` [PATCH v5 02/12] spi: spi-fsl-dspi: Fix little endian access to PUSHR CMD and TXDATA Vladimir Oltean 2020-03-18 0:15 ` Vladimir Oltean 2020-03-18 0:15 ` [PATCH v5 03/12] spi: spi-fsl-dspi: Fix bits-per-word acceleration in DMA mode Vladimir Oltean 2020-03-18 0:15 ` Vladimir Oltean 2020-03-18 0:15 ` [PATCH v5 04/12] spi: spi-fsl-dspi: Avoid reading more data than written in EOQ mode Vladimir Oltean 2020-03-18 0:15 ` Vladimir Oltean 2020-03-18 0:15 ` [PATCH v5 05/12] spi: spi-fsl-dspi: Protect against races on dspi->words_in_flight Vladimir Oltean 2020-03-18 0:15 ` Vladimir Oltean 2020-03-18 22:45 ` Applied "spi: spi-fsl-dspi: Protect against races on dspi->words_in_flight" to the spi tree Mark Brown 2020-03-18 22:45 ` Mark Brown 2020-03-18 0:15 ` [PATCH v5 06/12] spi: spi-fsl-dspi: Replace interruptible wait queue with a simple completion Vladimir Oltean 2020-03-18 0:15 ` [PATCH v5 07/12] spi: spi-fsl-dspi: Avoid NULL pointer in dspi_slave_abort for non-DMA mode Vladimir Oltean 2020-03-18 0:15 ` Vladimir Oltean 2020-03-18 0:15 ` [PATCH v5 08/12] spi: spi-fsl-dspi: Fix interrupt-less DMA mode taking an XSPI code path Vladimir Oltean 2020-03-18 0:16 ` Vladimir Oltean [this message] 2020-03-18 0:16 ` [PATCH v5 09/12] spi: spi-fsl-dspi: Move invariant configs out of dspi_transfer_one_message Vladimir Oltean 2020-03-18 0:16 ` [PATCH v5 10/12] spi: spi-fsl-dspi: Add support for LS1028A Vladimir Oltean 2020-03-18 0:16 ` [PATCH v5 11/12] arm64: dts: ls1028a: Specify the DMA channels for the DSPI controllers Vladimir Oltean 2020-04-20 14:36 ` Shawn Guo 2020-03-18 0:16 ` [PATCH v5 12/12] arm64: dts: ls1028a-rdb: Add a spidev node for the mikroBUS Vladimir Oltean 2020-03-18 0:16 ` Vladimir Oltean 2020-04-20 14:38 ` Shawn Guo 2020-04-20 15:10 ` Vladimir Oltean 2020-04-21 3:00 ` Shawn Guo 2020-04-20 18:06 ` Geert Uytterhoeven 2020-04-20 18:10 ` Vladimir Oltean 2020-03-18 19:03 ` [PATCH v5 00/12] NXP DSPI bugfixes and support for LS1028A Michael Walle 2020-03-18 19:03 ` Michael Walle 2020-03-18 19:05 ` Vladimir Oltean 2020-03-18 19:05 ` Vladimir Oltean
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