From: Cao Minh Hiep <cm-hiep@jinso.co.jp> To: broonie@kernel.org, geert+renesas@glider.be, linux-spi@vger.kernel.org Cc: kuninori.morimoto.gx@renesas.com, yoshihiro.shimoda.uh@renesas.com, ryusuke.sakato.bx@renesas.com, linux-renesas-soc@vger.kernel.org, nv-dung@jinso.co.jp, h-inayoshi@jinso.co.jp Subject: [PATCH 1/1] ARM: spi supports 32bytes buffer for DUAL and QUAD Date: Fri, 4 Nov 2016 17:38:54 +0900 [thread overview] Message-ID: <1478248734-32044-2-git-send-email-cm-hiep@jinso.co.jp> (raw) In-Reply-To: <1478248734-32044-1-git-send-email-cm-hiep@jinso.co.jp> From: Hiep Cao Minh <cm-hiep@jinso.co.jp> This patch supports 32bytes of buffer for DUAL and QUAD in QSPI by Using Transmit/Receive Buffer Data Triggering Number. In order to improve the DUAL and QUAD's performance of SPI while transferring data in PIO mode, it sends/receives each 32bytes data instead of each byte data as current situation. Signed-off-by: Hiep Cao Minh <cm-hiep@jinso.co.jp> --- drivers/spi/spi-rspi.c | 52 +++++++++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 49 insertions(+), 3 deletions(-) diff --git a/drivers/spi/spi-rspi.c b/drivers/spi/spi-rspi.c index a816f07..fb12bc5 100644 --- a/drivers/spi/spi-rspi.c +++ b/drivers/spi/spi-rspi.c @@ -413,7 +413,7 @@ static unsigned int qspi_set_send_trigger(struct rspi_data *rspi, return n; } -static void qspi_set_receive_trigger(struct rspi_data *rspi, unsigned int len) +static int qspi_set_receive_trigger(struct rspi_data *rspi, unsigned int len) { unsigned int n; @@ -428,6 +428,7 @@ static void qspi_set_receive_trigger(struct rspi_data *rspi, unsigned int len) qspi_update(rspi, SPBFCR_RXTRG_MASK, SPBFCR_RXTRG_1B, QSPI_SPBFCR); } + return n; } #define set_config_register(spi, n) spi->ops->set_config_register(spi, n) @@ -514,6 +515,51 @@ static int rspi_pio_transfer(struct rspi_data *rspi, const u8 *tx, u8 *rx, return 0; } +static int rspi_pio_transfer_in_or_our(struct rspi_data *rspi, const u8 *tx, + u8 *rx, unsigned int n) +{ + unsigned int i, len; + int ret; + + while (n > 0) { + if (tx) { + len = qspi_set_send_trigger(rspi, n); + if (len == QSPI_BUFFER_SIZE) { + ret = rspi_wait_for_tx_empty(rspi); + if (ret < 0) { + dev_err(&rspi->master->dev, "transmit timeout\n"); + return ret; + } + for (i = 0; i < len; i++) + rspi_write_data(rspi, *tx++); + } else { + ret = rspi_pio_transfer(rspi, tx, NULL, n); + if (ret < 0) + return ret; + } + } + if (rx) { + len = qspi_set_receive_trigger(rspi, n); + if (len == QSPI_BUFFER_SIZE) { + ret = rspi_wait_for_rx_full(rspi); + if (ret < 0) { + dev_err(&rspi->master->dev, "receive timeout\n"); + return ret; + } + for (i = 0; i < len; i++) + *rx++ = rspi_read_data(rspi); + } else { + ret = rspi_pio_transfer(rspi, NULL, rx, n); + if (ret < 0) + return ret; + *rx++ = ret; + } + } + n -= len; + } + return 0; +} + static void rspi_dma_complete(void *arg) { struct rspi_data *rspi = arg; @@ -793,7 +839,7 @@ static int qspi_transfer_out(struct rspi_data *rspi, struct spi_transfer *xfer) return ret; } - ret = rspi_pio_transfer(rspi, xfer->tx_buf, NULL, xfer->len); + ret = rspi_pio_transfer_in_or_our(rspi, xfer->tx_buf, NULL, xfer->len); if (ret < 0) return ret; @@ -811,7 +857,7 @@ static int qspi_transfer_in(struct rspi_data *rspi, struct spi_transfer *xfer) return ret; } - return rspi_pio_transfer(rspi, NULL, xfer->rx_buf, xfer->len); + return rspi_pio_transfer_in_or_our(rspi, NULL, xfer->rx_buf, xfer->len); } static int qspi_transfer_one(struct spi_master *master, struct spi_device *spi, -- 1.9.1
WARNING: multiple messages have this Message-ID (diff)
From: Cao Minh Hiep <cm-hiep-HEF513clHfp3+QwDJ9on6Q@public.gmane.org> To: broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, geert+renesas-gXvu3+zWzMSzQB+pC5nmwQ@public.gmane.org, linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Cc: kuninori.morimoto.gx-zM6kxYcvzFBBDgjK7y7TUQ@public.gmane.org, yoshihiro.shimoda.uh-zM6kxYcvzFBBDgjK7y7TUQ@public.gmane.org, ryusuke.sakato.bx-zM6kxYcvzFBBDgjK7y7TUQ@public.gmane.org, linux-renesas-soc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, nv-dung-HEF513clHfp3+QwDJ9on6Q@public.gmane.org, h-inayoshi-HEF513clHfp3+QwDJ9on6Q@public.gmane.org Subject: [PATCH 1/1] ARM: spi supports 32bytes buffer for DUAL and QUAD Date: Fri, 4 Nov 2016 17:38:54 +0900 [thread overview] Message-ID: <1478248734-32044-2-git-send-email-cm-hiep@jinso.co.jp> (raw) In-Reply-To: <1478248734-32044-1-git-send-email-cm-hiep-HEF513clHfp3+QwDJ9on6Q@public.gmane.org> From: Hiep Cao Minh <cm-hiep-HEF513clHfp3+QwDJ9on6Q@public.gmane.org> This patch supports 32bytes of buffer for DUAL and QUAD in QSPI by Using Transmit/Receive Buffer Data Triggering Number. In order to improve the DUAL and QUAD's performance of SPI while transferring data in PIO mode, it sends/receives each 32bytes data instead of each byte data as current situation. Signed-off-by: Hiep Cao Minh <cm-hiep-HEF513clHfp3+QwDJ9on6Q@public.gmane.org> --- drivers/spi/spi-rspi.c | 52 +++++++++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 49 insertions(+), 3 deletions(-) diff --git a/drivers/spi/spi-rspi.c b/drivers/spi/spi-rspi.c index a816f07..fb12bc5 100644 --- a/drivers/spi/spi-rspi.c +++ b/drivers/spi/spi-rspi.c @@ -413,7 +413,7 @@ static unsigned int qspi_set_send_trigger(struct rspi_data *rspi, return n; } -static void qspi_set_receive_trigger(struct rspi_data *rspi, unsigned int len) +static int qspi_set_receive_trigger(struct rspi_data *rspi, unsigned int len) { unsigned int n; @@ -428,6 +428,7 @@ static void qspi_set_receive_trigger(struct rspi_data *rspi, unsigned int len) qspi_update(rspi, SPBFCR_RXTRG_MASK, SPBFCR_RXTRG_1B, QSPI_SPBFCR); } + return n; } #define set_config_register(spi, n) spi->ops->set_config_register(spi, n) @@ -514,6 +515,51 @@ static int rspi_pio_transfer(struct rspi_data *rspi, const u8 *tx, u8 *rx, return 0; } +static int rspi_pio_transfer_in_or_our(struct rspi_data *rspi, const u8 *tx, + u8 *rx, unsigned int n) +{ + unsigned int i, len; + int ret; + + while (n > 0) { + if (tx) { + len = qspi_set_send_trigger(rspi, n); + if (len == QSPI_BUFFER_SIZE) { + ret = rspi_wait_for_tx_empty(rspi); + if (ret < 0) { + dev_err(&rspi->master->dev, "transmit timeout\n"); + return ret; + } + for (i = 0; i < len; i++) + rspi_write_data(rspi, *tx++); + } else { + ret = rspi_pio_transfer(rspi, tx, NULL, n); + if (ret < 0) + return ret; + } + } + if (rx) { + len = qspi_set_receive_trigger(rspi, n); + if (len == QSPI_BUFFER_SIZE) { + ret = rspi_wait_for_rx_full(rspi); + if (ret < 0) { + dev_err(&rspi->master->dev, "receive timeout\n"); + return ret; + } + for (i = 0; i < len; i++) + *rx++ = rspi_read_data(rspi); + } else { + ret = rspi_pio_transfer(rspi, NULL, rx, n); + if (ret < 0) + return ret; + *rx++ = ret; + } + } + n -= len; + } + return 0; +} + static void rspi_dma_complete(void *arg) { struct rspi_data *rspi = arg; @@ -793,7 +839,7 @@ static int qspi_transfer_out(struct rspi_data *rspi, struct spi_transfer *xfer) return ret; } - ret = rspi_pio_transfer(rspi, xfer->tx_buf, NULL, xfer->len); + ret = rspi_pio_transfer_in_or_our(rspi, xfer->tx_buf, NULL, xfer->len); if (ret < 0) return ret; @@ -811,7 +857,7 @@ static int qspi_transfer_in(struct rspi_data *rspi, struct spi_transfer *xfer) return ret; } - return rspi_pio_transfer(rspi, NULL, xfer->rx_buf, xfer->len); + return rspi_pio_transfer_in_or_our(rspi, NULL, xfer->rx_buf, xfer->len); } static int qspi_transfer_one(struct spi_master *master, struct spi_device *spi, -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-spi" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html
next prev parent reply other threads:[~2016-11-04 9:34 UTC|newest] Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top 2016-11-04 8:38 [PATCH 0/1] ARM: spi supports 32bytes buffer for DUAL and QUAD Cao Minh Hiep 2016-11-04 8:38 ` Cao Minh Hiep [this message] 2016-11-04 8:38 ` [PATCH 1/1] " Cao Minh Hiep 2016-11-04 17:06 ` Mark Brown 2016-11-04 17:23 ` Applied "spi: rspi: supports 32bytes buffer for DUAL and QUAD" to the spi tree Mark Brown 2016-11-07 0:20 ` Hiep Cao Minh 2016-11-07 0:20 ` Hiep Cao Minh 2016-11-05 7:32 ` [PATCH 1/1] ARM: spi supports 32bytes buffer for DUAL and QUAD Niklas Söderlund 2016-11-05 7:32 ` Niklas Söderlund 2016-11-07 0:27 ` Hiep Cao Minh 2016-11-07 0:27 ` Hiep Cao Minh 2016-11-04 15:49 ` [PATCH 0/1] " Mark Brown 2016-11-04 15:49 ` Mark Brown 2016-11-07 0:17 ` Hiep Cao Minh
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