From: Tudor Ambarus <tudor.ambarus@linaro.org> To: broonie@kernel.org, robh@kernel.org, andi.shyti@kernel.org, krzysztof.kozlowski@linaro.org, semen.protsenko@linaro.org, conor+dt@kernel.org Cc: alim.akhtar@samsung.com, linux-spi@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, andre.draszik@linaro.org, peter.griffin@linaro.org, kernel-team@android.com, willmcvicker@google.com, devicetree@vger.kernel.org, Tudor Ambarus <tudor.ambarus@linaro.org> Subject: [PATCH v3 04/12] spi: s3c64xx: determine the fifo depth only once Date: Fri, 16 Feb 2024 07:05:47 +0000 [thread overview] Message-ID: <20240216070555.2483977-5-tudor.ambarus@linaro.org> (raw) In-Reply-To: <20240216070555.2483977-1-tudor.ambarus@linaro.org> Determine the FIFO depth only once, at probe time. ``sdd->fifo_depth`` can be set later on with the FIFO depth specified in the device tree. Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org> --- drivers/spi/spi-s3c64xx.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index 338ca3f03ea5..72572e23cde5 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -191,6 +191,7 @@ struct s3c64xx_spi_port_config { * @tx_dma: Local transmit DMA data (e.g. chan and direction) * @port_conf: Local SPI port configuration data * @port_id: Port identification number + * @fifo_depth: depth of the FIFO. * @rx_fifomask: SPI_STATUS.RX_FIFO_LVL mask. Shifted mask defining the field's * length and position. * @tx_fifomask: SPI_STATUS.TX_FIFO_LVL mask. Shifted mask defining the field's @@ -214,6 +215,7 @@ struct s3c64xx_spi_driver_data { struct s3c64xx_spi_dma_data tx_dma; const struct s3c64xx_spi_port_config *port_conf; unsigned int port_id; + unsigned int fifo_depth; u32 rx_fifomask; u32 tx_fifomask; }; @@ -424,7 +426,7 @@ static bool s3c64xx_spi_can_dma(struct spi_controller *host, struct s3c64xx_spi_driver_data *sdd = spi_controller_get_devdata(host); if (sdd->rx_dma.ch && sdd->tx_dma.ch) - return xfer->len > FIFO_DEPTH(sdd); + return xfer->len > sdd->fifo_depth; return false; } @@ -548,7 +550,7 @@ static u32 s3c64xx_spi_wait_for_timeout(struct s3c64xx_spi_driver_data *sdd, void __iomem *regs = sdd->regs; unsigned long val = 1; u32 status; - u32 max_fifo = FIFO_DEPTH(sdd); + u32 max_fifo = sdd->fifo_depth; if (timeout_ms) val = msecs_to_loops(timeout_ms); @@ -655,7 +657,7 @@ static int s3c64xx_wait_for_pio(struct s3c64xx_spi_driver_data *sdd, * For any size less than the fifo size the below code is * executed atleast once. */ - loops = xfer->len / FIFO_DEPTH(sdd); + loops = xfer->len / sdd->fifo_depth; buf = xfer->rx_buf; do { /* wait for data to be received in the fifo */ @@ -792,7 +794,7 @@ static int s3c64xx_spi_transfer_one(struct spi_controller *host, struct spi_transfer *xfer) { struct s3c64xx_spi_driver_data *sdd = spi_controller_get_devdata(host); - const unsigned int fifo_len = FIFO_DEPTH(sdd); + const unsigned int fifo_len = sdd->fifo_depth; const void *tx_buf = NULL; void *rx_buf = NULL; int target_len = 0, origin_len = 0; @@ -1261,6 +1263,8 @@ static int s3c64xx_spi_probe(struct platform_device *pdev) sdd->port_id = pdev->id; } + sdd->fifo_depth = FIFO_DEPTH(sdd); + s3c64xx_spi_set_fifomask(sdd); sdd->cur_bpw = 8; @@ -1352,7 +1356,7 @@ static int s3c64xx_spi_probe(struct platform_device *pdev) dev_dbg(&pdev->dev, "Samsung SoC SPI Driver loaded for Bus SPI-%d with %d Targets attached\n", sdd->port_id, host->num_chipselect); dev_dbg(&pdev->dev, "\tIOmem=[%pR]\tFIFO %dbytes\n", - mem_res, FIFO_DEPTH(sdd)); + mem_res, sdd->fifo_depth); pm_runtime_mark_last_busy(&pdev->dev); pm_runtime_put_autosuspend(&pdev->dev); -- 2.44.0.rc0.258.g7320e95886-goog _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
WARNING: multiple messages have this Message-ID (diff)
From: Tudor Ambarus <tudor.ambarus@linaro.org> To: broonie@kernel.org, robh@kernel.org, andi.shyti@kernel.org, krzysztof.kozlowski@linaro.org, semen.protsenko@linaro.org, conor+dt@kernel.org Cc: alim.akhtar@samsung.com, linux-spi@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, andre.draszik@linaro.org, peter.griffin@linaro.org, kernel-team@android.com, willmcvicker@google.com, devicetree@vger.kernel.org, Tudor Ambarus <tudor.ambarus@linaro.org> Subject: [PATCH v3 04/12] spi: s3c64xx: determine the fifo depth only once Date: Fri, 16 Feb 2024 07:05:47 +0000 [thread overview] Message-ID: <20240216070555.2483977-5-tudor.ambarus@linaro.org> (raw) In-Reply-To: <20240216070555.2483977-1-tudor.ambarus@linaro.org> Determine the FIFO depth only once, at probe time. ``sdd->fifo_depth`` can be set later on with the FIFO depth specified in the device tree. Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org> --- drivers/spi/spi-s3c64xx.c | 14 +++++++++----- 1 file changed, 9 insertions(+), 5 deletions(-) diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index 338ca3f03ea5..72572e23cde5 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -191,6 +191,7 @@ struct s3c64xx_spi_port_config { * @tx_dma: Local transmit DMA data (e.g. chan and direction) * @port_conf: Local SPI port configuration data * @port_id: Port identification number + * @fifo_depth: depth of the FIFO. * @rx_fifomask: SPI_STATUS.RX_FIFO_LVL mask. Shifted mask defining the field's * length and position. * @tx_fifomask: SPI_STATUS.TX_FIFO_LVL mask. Shifted mask defining the field's @@ -214,6 +215,7 @@ struct s3c64xx_spi_driver_data { struct s3c64xx_spi_dma_data tx_dma; const struct s3c64xx_spi_port_config *port_conf; unsigned int port_id; + unsigned int fifo_depth; u32 rx_fifomask; u32 tx_fifomask; }; @@ -424,7 +426,7 @@ static bool s3c64xx_spi_can_dma(struct spi_controller *host, struct s3c64xx_spi_driver_data *sdd = spi_controller_get_devdata(host); if (sdd->rx_dma.ch && sdd->tx_dma.ch) - return xfer->len > FIFO_DEPTH(sdd); + return xfer->len > sdd->fifo_depth; return false; } @@ -548,7 +550,7 @@ static u32 s3c64xx_spi_wait_for_timeout(struct s3c64xx_spi_driver_data *sdd, void __iomem *regs = sdd->regs; unsigned long val = 1; u32 status; - u32 max_fifo = FIFO_DEPTH(sdd); + u32 max_fifo = sdd->fifo_depth; if (timeout_ms) val = msecs_to_loops(timeout_ms); @@ -655,7 +657,7 @@ static int s3c64xx_wait_for_pio(struct s3c64xx_spi_driver_data *sdd, * For any size less than the fifo size the below code is * executed atleast once. */ - loops = xfer->len / FIFO_DEPTH(sdd); + loops = xfer->len / sdd->fifo_depth; buf = xfer->rx_buf; do { /* wait for data to be received in the fifo */ @@ -792,7 +794,7 @@ static int s3c64xx_spi_transfer_one(struct spi_controller *host, struct spi_transfer *xfer) { struct s3c64xx_spi_driver_data *sdd = spi_controller_get_devdata(host); - const unsigned int fifo_len = FIFO_DEPTH(sdd); + const unsigned int fifo_len = sdd->fifo_depth; const void *tx_buf = NULL; void *rx_buf = NULL; int target_len = 0, origin_len = 0; @@ -1261,6 +1263,8 @@ static int s3c64xx_spi_probe(struct platform_device *pdev) sdd->port_id = pdev->id; } + sdd->fifo_depth = FIFO_DEPTH(sdd); + s3c64xx_spi_set_fifomask(sdd); sdd->cur_bpw = 8; @@ -1352,7 +1356,7 @@ static int s3c64xx_spi_probe(struct platform_device *pdev) dev_dbg(&pdev->dev, "Samsung SoC SPI Driver loaded for Bus SPI-%d with %d Targets attached\n", sdd->port_id, host->num_chipselect); dev_dbg(&pdev->dev, "\tIOmem=[%pR]\tFIFO %dbytes\n", - mem_res, FIFO_DEPTH(sdd)); + mem_res, sdd->fifo_depth); pm_runtime_mark_last_busy(&pdev->dev); pm_runtime_put_autosuspend(&pdev->dev); -- 2.44.0.rc0.258.g7320e95886-goog
next prev parent reply other threads:[~2024-02-16 7:06 UTC|newest] Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top 2024-02-16 7:05 [PATCH v3 00/12] spi: s3c64xx: remove OF alias ID dependency Tudor Ambarus 2024-02-16 7:05 ` Tudor Ambarus 2024-02-16 7:05 ` [PATCH v3 01/12] spi: dt-bindings: introduce FIFO depth properties Tudor Ambarus 2024-02-16 7:05 ` Tudor Ambarus 2024-02-16 19:45 ` Conor Dooley 2024-02-16 19:45 ` Conor Dooley 2024-02-16 7:05 ` [PATCH v3 02/12] spi: s3c64xx: define a magic value Tudor Ambarus 2024-02-16 7:05 ` Tudor Ambarus 2024-02-16 7:05 ` [PATCH v3 03/12] spi: s3c64xx: allow full FIFO masks Tudor Ambarus 2024-02-16 7:05 ` Tudor Ambarus 2024-02-16 7:05 ` Tudor Ambarus [this message] 2024-02-16 7:05 ` [PATCH v3 04/12] spi: s3c64xx: determine the fifo depth only once Tudor Ambarus 2024-02-16 7:05 ` [PATCH v3 05/12] spi: s3c64xx: retrieve the FIFO depth from the device tree Tudor Ambarus 2024-02-16 7:05 ` Tudor Ambarus 2024-02-16 7:05 ` [PATCH v3 06/12] spi: s3c64xx: allow FIFO depth to be determined from the compatible Tudor Ambarus 2024-02-16 7:05 ` Tudor Ambarus 2024-02-16 7:05 ` [PATCH v3 07/12] spi: s3c64xx: let the SPI core determine the bus number Tudor Ambarus 2024-02-16 7:05 ` Tudor Ambarus 2024-02-16 7:05 ` [PATCH v3 08/12] spi: s3c64xx: introduce s3c64xx_spi_set_port_id() Tudor Ambarus 2024-02-16 7:05 ` Tudor Ambarus 2024-02-16 7:05 ` [PATCH v3 09/12] spi: s3c64xx: get rid of the OF alias ID dependency Tudor Ambarus 2024-02-16 7:05 ` Tudor Ambarus 2024-02-16 7:05 ` [PATCH v3 10/12] spi: s3c64xx: deprecate fifo_lvl_mask, rx_lvl_offset and port_id Tudor Ambarus 2024-02-16 7:05 ` Tudor Ambarus 2024-02-16 7:05 ` [PATCH v3 11/12] spi: s3c64xx: switch gs101 to new port config data Tudor Ambarus 2024-02-16 7:05 ` Tudor Ambarus 2024-02-16 7:05 ` [PATCH v3 12/12] spi: s3c64xx: switch exynos850 " Tudor Ambarus 2024-02-16 7:05 ` Tudor Ambarus 2024-02-21 17:56 ` Tudor Ambarus 2024-02-21 17:56 ` Tudor Ambarus 2024-02-24 23:59 ` Sam Protsenko 2024-02-24 23:59 ` Sam Protsenko 2024-03-06 14:08 ` [PATCH v3 00/12] spi: s3c64xx: remove OF alias ID dependency Mark Brown 2024-03-06 14:08 ` Mark Brown
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