From: "Łukasz Stelmach" <l.stelmach@samsung.com> To: Kukjin Kim <kgene@kernel.org>, Krzysztof Kozlowski <krzk@kernel.org>, Tomasz Figa <tomasz.figa@gmail.com>, Andi Shyti <andi@etezian.org>, Mark Brown <broonie@kernel.org>, linux-spi@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: "Marek Szyprowski" <m.szyprowski@samsung.com>, "Bartłomiej Żołnierkiewicz" <b.zolnierkie@samsung.com>, "Łukasz Stelmach" <l.stelmach@samsung.com> Subject: [PATCH v3 1/9] spi: spi-s3c64xx: swap s3c64xx_spi_set_cs() and s3c64xx_enable_datapath() Date: Fri, 2 Oct 2020 14:22:35 +0200 [thread overview] Message-ID: <20201002122243.26849-2-l.stelmach@samsung.com> (raw) In-Reply-To: <20201002122243.26849-1-l.stelmach@samsung.com> Fix issues with DMA transfers bigger than 512 bytes on Exynos3250. Without the patches such transfers fail to complete. This solution to the problem is found in the vendor kernel for ARTIK5 boards based on Exynos3250. Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Łukasz Stelmach <l.stelmach@samsung.com> --- drivers/spi/spi-s3c64xx.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index 924b24441789..26c7cb79cd78 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -685,11 +685,11 @@ static int s3c64xx_spi_transfer_one(struct spi_master *master, sdd->state &= ~RXBUSY; sdd->state &= ~TXBUSY; - s3c64xx_enable_datapath(sdd, xfer, use_dma); - /* Start the signals */ s3c64xx_spi_set_cs(spi, true); + s3c64xx_enable_datapath(sdd, xfer, use_dma); + spin_unlock_irqrestore(&sdd->lock, flags); if (use_dma) -- 2.26.2
WARNING: multiple messages have this Message-ID (diff)
From: "Łukasz Stelmach" <l.stelmach@samsung.com> To: Kukjin Kim <kgene@kernel.org>, Krzysztof Kozlowski <krzk@kernel.org>, Tomasz Figa <tomasz.figa@gmail.com>, Andi Shyti <andi@etezian.org>, Mark Brown <broonie@kernel.org>, linux-spi@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: "Bartłomiej Żołnierkiewicz" <b.zolnierkie@samsung.com>, "Łukasz Stelmach" <l.stelmach@samsung.com>, "Marek Szyprowski" <m.szyprowski@samsung.com> Subject: [PATCH v3 1/9] spi: spi-s3c64xx: swap s3c64xx_spi_set_cs() and s3c64xx_enable_datapath() Date: Fri, 2 Oct 2020 14:22:35 +0200 [thread overview] Message-ID: <20201002122243.26849-2-l.stelmach@samsung.com> (raw) In-Reply-To: <20201002122243.26849-1-l.stelmach@samsung.com> Fix issues with DMA transfers bigger than 512 bytes on Exynos3250. Without the patches such transfers fail to complete. This solution to the problem is found in the vendor kernel for ARTIK5 boards based on Exynos3250. Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Łukasz Stelmach <l.stelmach@samsung.com> --- drivers/spi/spi-s3c64xx.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index 924b24441789..26c7cb79cd78 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -685,11 +685,11 @@ static int s3c64xx_spi_transfer_one(struct spi_master *master, sdd->state &= ~RXBUSY; sdd->state &= ~TXBUSY; - s3c64xx_enable_datapath(sdd, xfer, use_dma); - /* Start the signals */ s3c64xx_spi_set_cs(spi, true); + s3c64xx_enable_datapath(sdd, xfer, use_dma); + spin_unlock_irqrestore(&sdd->lock, flags); if (use_dma) -- 2.26.2 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2020-10-02 12:23 UTC|newest] Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top [not found] <CGME20201002122251eucas1p1a8977c163d7a291829e7cac212d26862@eucas1p1.samsung.com> 2020-10-02 12:22 ` [PATCH v3 0/9] Some fixes for spi-s3c64xx Łukasz Stelmach 2020-10-02 12:22 ` Łukasz Stelmach [not found] ` <CGME20201002122251eucas1p26b59b6a574f78200d0c696dd1aacc140@eucas1p2.samsung.com> 2020-10-02 12:22 ` Łukasz Stelmach [this message] 2020-10-02 12:22 ` [PATCH v3 1/9] spi: spi-s3c64xx: swap s3c64xx_spi_set_cs() and s3c64xx_enable_datapath() Łukasz Stelmach [not found] ` <CGME20201002122251eucas1p235d6797ae11f075a09841be64dc65236@eucas1p2.samsung.com> 2020-10-02 12:22 ` [PATCH v3 2/9] spi: spi-s3s64xx: Add S3C64XX_SPI_QUIRK_CS_AUTO for Exynos3250 Łukasz Stelmach 2020-10-02 12:22 ` Łukasz Stelmach [not found] ` <CGME20201002122252eucas1p1555a9b0df6f2318ab511117be3f65dee@eucas1p1.samsung.com> 2020-10-02 12:22 ` [PATCH v3 3/9] spi: spi-s3c64xx: Check return values Łukasz Stelmach 2020-10-02 12:22 ` Łukasz Stelmach [not found] ` <CGME20201002122252eucas1p1496d896453d21acda6ab83ef9b7f0b8a@eucas1p1.samsung.com> 2020-10-02 12:22 ` [PATCH v3 4/9] spi: spi-s3c64xx: Report more information when errors occur Łukasz Stelmach 2020-10-02 12:22 ` Łukasz Stelmach [not found] ` <CGME20201002122252eucas1p16b24cee16354763e4925f21cf52c6a4d@eucas1p1.samsung.com> 2020-10-02 12:22 ` [PATCH v3 5/9] spi: spi-s3c64xx: Rename S3C64XX_SPI_SLAVE_* to S3C64XX_SPI_CS_* Łukasz Stelmach 2020-10-02 12:22 ` Łukasz Stelmach [not found] ` <CGME20201002122255eucas1p2f361ef66b44801d69e0ee1425571f571@eucas1p2.samsung.com> 2020-10-02 12:22 ` [PATCH v3 6/9] spi: spi-s3c64xx: Fix doc comment for struct s3c64xx_spi_driver_data Łukasz Stelmach 2020-10-02 12:22 ` Łukasz Stelmach [not found] ` <CGME20201002122255eucas1p21976a8ba0566564b79a9dd6f62cd4caf@eucas1p2.samsung.com> 2020-10-02 12:22 ` [PATCH v3 7/9] spi: spi-s3c64xx: Ensure cur_speed holds actual clock value Łukasz Stelmach 2020-10-02 12:22 ` Łukasz Stelmach 2020-10-02 12:31 ` Krzysztof Kozlowski 2020-10-02 12:31 ` Krzysztof Kozlowski [not found] ` <CGME20201002122255eucas1p2cec6d9cdac111d6f2dc628c7865f7bd5@eucas1p2.samsung.com> 2020-10-02 12:22 ` [PATCH v3 8/9] spi: spi-s3c64xx: Increase transfer timeout Łukasz Stelmach 2020-10-02 12:22 ` Łukasz Stelmach [not found] ` <CGME20201002122256eucas1p10093b3619fbe5f96ae351920329d1626@eucas1p1.samsung.com> 2020-10-02 12:22 ` [PATCH v3 9/9] spi: spi-s3c64xx: Turn on interrupts upon resume Łukasz Stelmach 2020-10-02 12:22 ` Łukasz Stelmach 2020-10-05 17:54 ` [PATCH v3 0/9] Some fixes for spi-s3c64xx Mark Brown
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20201002122243.26849-2-l.stelmach@samsung.com \ --to=l.stelmach@samsung.com \ --cc=andi@etezian.org \ --cc=b.zolnierkie@samsung.com \ --cc=broonie@kernel.org \ --cc=kgene@kernel.org \ --cc=krzk@kernel.org \ --cc=linux-arm-kernel@lists.infradead.org \ --cc=linux-kernel@vger.kernel.org \ --cc=linux-samsung-soc@vger.kernel.org \ --cc=linux-spi@vger.kernel.org \ --cc=m.szyprowski@samsung.com \ --cc=tomasz.figa@gmail.com \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.