From: "Łukasz Stelmach" <l.stelmach@samsung.com> To: Kukjin Kim <kgene@kernel.org>, Krzysztof Kozlowski <krzk@kernel.org>, 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: m.szyprowski@samsung.com, b.zolnierkie@samsung.com, "Łukasz Stelmach" <l.stelmach@samsung.com> Subject: [PATCH v2 1/9] spi: spi-s3c64xx: swap s3c64xx_spi_set_cs() and s3c64xx_enable_datapath() Date: Fri, 21 Aug 2020 18:13:53 +0200 [thread overview] Message-ID: <20200821161401.11307-2-l.stelmach@samsung.com> (raw) In-Reply-To: <20200821161401.11307-1-l.stelmach@samsung.com> This and the next patch 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. 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>, 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: b.zolnierkie@samsung.com, "Łukasz Stelmach" <l.stelmach@samsung.com>, m.szyprowski@samsung.com Subject: [PATCH v2 1/9] spi: spi-s3c64xx: swap s3c64xx_spi_set_cs() and s3c64xx_enable_datapath() Date: Fri, 21 Aug 2020 18:13:53 +0200 [thread overview] Message-ID: <20200821161401.11307-2-l.stelmach@samsung.com> (raw) In-Reply-To: <20200821161401.11307-1-l.stelmach@samsung.com> This and the next patch 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. 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:[~2020-08-21 16:14 UTC|newest] Thread overview: 100+ messages / expand[flat|nested] mbox.gz Atom feed top [not found] <CGME20200821161404eucas1p20577160d1bff2e8f5cae7403e93716ab@eucas1p2.samsung.com> 2020-08-21 16:13 ` [PATCH v2 0/9] Some fixes for spi-s3c64xx Łukasz Stelmach 2020-08-21 16:13 ` Łukasz Stelmach [not found] ` <CGME20200821161405eucas1p1d43a5970c6a26389cd506aab5f986bc8@eucas1p1.samsung.com> 2020-08-21 16:13 ` Łukasz Stelmach [this message] 2020-08-21 16:13 ` [PATCH v2 1/9] spi: spi-s3c64xx: swap s3c64xx_spi_set_cs() and s3c64xx_enable_datapath() Łukasz Stelmach 2020-08-22 12:01 ` Krzysztof Kozlowski 2020-08-22 12:01 ` Krzysztof Kozlowski [not found] ` <CGME20200821161405eucas1p20aad659cd41bc4f56d5123d3c63394f0@eucas1p2.samsung.com> 2020-08-21 16:13 ` [PATCH v2 2/9] spi: spi-s3s64xx: Add S3C64XX_SPI_QUIRK_CS_AUTO for Exynos3250 Łukasz Stelmach 2020-08-21 16:13 ` Łukasz Stelmach 2020-08-22 12:02 ` Krzysztof Kozlowski 2020-08-22 12:02 ` Krzysztof Kozlowski [not found] ` <CGME20200821161405eucas1p19280babcd73926b5c22a48830f5fecd7@eucas1p1.samsung.com> 2020-08-21 16:13 ` [PATCH v2 3/9] spi: spi-s3c64xx: Report more information when errors occur Łukasz Stelmach 2020-08-21 16:13 ` Łukasz Stelmach 2020-08-22 12:03 ` Krzysztof Kozlowski 2020-08-22 12:03 ` Krzysztof Kozlowski [not found] ` <CGME20200821161406eucas1p2be3221183a855afd0213f8ce58bd8942@eucas1p2.samsung.com> 2020-08-21 16:13 ` [PATCH v2 4/9] spi: spi-s3c64xx: Rename S3C64XX_SPI_SLAVE_* to S3C64XX_SPI_CS_* Łukasz Stelmach 2020-08-21 16:13 ` Łukasz Stelmach [not found] ` <CGME20200821161406eucas1p121553719d4e9cc020d2c557a69000f0c@eucas1p1.samsung.com> 2020-08-21 16:13 ` [PATCH v2 5/9] spi: spi-s3c64xx: Fix doc comment for struct s3c64xx_spi_driver_data Łukasz Stelmach 2020-08-21 16:13 ` Łukasz Stelmach 2020-08-22 12:26 ` Krzysztof Kozlowski 2020-08-22 12:26 ` Krzysztof Kozlowski [not found] ` <CGME20200821161407eucas1p116af63a668bdbb75fa974589e5f6139f@eucas1p1.samsung.com> 2020-08-21 16:13 ` [PATCH v2 6/9] spi: spi-s3c64xx: Check return values Łukasz Stelmach 2020-08-21 16:13 ` Łukasz Stelmach 2020-08-22 12:37 ` Krzysztof Kozlowski 2020-08-22 12:37 ` Krzysztof Kozlowski 2020-08-25 19:06 ` Sylwester Nawrocki 2020-08-25 19:06 ` Sylwester Nawrocki [not found] ` <CGME20200901152113eucas1p2977046b7a5b4c5a519f88870d658698a@eucas1p2.samsung.com> 2020-09-01 15:21 ` Lukasz Stelmach 2020-09-01 15:21 ` Lukasz Stelmach 2020-09-02 8:14 ` Sylwester Nawrocki 2020-09-02 8:14 ` Sylwester Nawrocki [not found] ` <CGME20200903084555eucas1p2f40375edb325107b68966fd52198b220@eucas1p2.samsung.com> 2020-09-03 8:45 ` Lukasz Stelmach 2020-09-03 8:45 ` Lukasz Stelmach 2020-09-03 11:18 ` Sylwester Nawrocki 2020-09-03 11:18 ` Sylwester Nawrocki [not found] ` <CGME20200821161407eucas1p249e4833b8839f717cc2a496ab43bb8a2@eucas1p2.samsung.com> 2020-08-21 16:13 ` [PATCH v2 7/9] spi: spi-s3c64xx: Ensure cur_speed holds actual clock value Łukasz Stelmach 2020-08-21 16:13 ` Łukasz Stelmach 2020-08-22 12:43 ` Krzysztof Kozlowski 2020-08-22 12:43 ` Krzysztof Kozlowski 2020-08-22 14:52 ` Tomasz Figa 2020-08-22 14:52 ` Tomasz Figa 2020-08-22 15:18 ` Krzysztof Kozlowski 2020-08-22 15:18 ` Krzysztof Kozlowski 2020-08-22 15:20 ` Tomasz Figa 2020-08-22 15:20 ` Tomasz Figa [not found] ` <CGME20200824131716eucas1p16a3fde52aa765e7cd6584d4733762047@eucas1p1.samsung.com> 2020-08-24 13:17 ` Lukasz Stelmach 2020-08-24 13:17 ` Lukasz Stelmach 2020-08-24 13:21 ` Tomasz Figa 2020-08-24 13:21 ` Tomasz Figa [not found] ` <CGME20200825090211eucas1p1b63191fa778a775e33169ba2c1d3b74b@eucas1p1.samsung.com> 2020-08-25 9:01 ` Lukasz Stelmach 2020-08-25 9:01 ` Lukasz Stelmach 2020-08-25 15:11 ` Tomasz Figa 2020-08-25 15:11 ` Tomasz Figa [not found] ` <CGME20200825154611eucas1p284be8779ab484e675af071afef28376b@eucas1p2.samsung.com> 2020-08-25 15:45 ` Lukasz Stelmach 2020-08-25 15:45 ` Lukasz Stelmach 2020-08-22 14:54 ` Tomasz Figa 2020-08-22 14:54 ` Tomasz Figa [not found] ` <CGME20200821161407eucas1p23a283ac117d4381e087e9bacec537665@eucas1p2.samsung.com> 2020-08-21 16:14 ` [PATCH v2 8/9] spi: spi-s3c64xx: Increase transfer timeout Łukasz Stelmach 2020-08-21 16:14 ` Łukasz Stelmach 2020-08-22 12:43 ` Krzysztof Kozlowski 2020-08-22 12:43 ` Krzysztof Kozlowski [not found] ` <CGME20200821161408eucas1p196aa4b954b3d19ad1b89a48dbbe41fbc@eucas1p1.samsung.com> 2020-08-21 16:14 ` [PATCH v2 9/9] spi: spi-s3c64xx: Turn on interrupts upon resume Łukasz Stelmach 2020-08-21 16:14 ` Łukasz Stelmach 2020-08-22 12:44 ` Krzysztof Kozlowski 2020-08-22 12:44 ` Krzysztof Kozlowski [not found] ` <CGME20201001152246eucas1p1ee289b8a85b707f7496355c081623796@eucas1p1.samsung.com> 2020-10-01 15:21 ` [PATCH v2 RESEND 0/9] Some fixes for spi-s3c64xx Łukasz Stelmach 2020-10-01 15:21 ` Łukasz Stelmach [not found] ` <CGME20201001152246eucas1p1b4155ab4f06a39cc88f205b4a7cd47f9@eucas1p1.samsung.com> 2020-10-01 15:21 ` [PATCH v2 RESEND 1/9] spi: spi-s3c64xx: swap s3c64xx_spi_set_cs() and s3c64xx_enable_datapath() Łukasz Stelmach 2020-10-01 15:21 ` Łukasz Stelmach [not found] ` <CGME20201001152246eucas1p2fb22ab55c276d76c4508142842c90ab8@eucas1p2.samsung.com> 2020-10-01 15:21 ` [PATCH v2 RESEND 2/9] spi: spi-s3s64xx: Add S3C64XX_SPI_QUIRK_CS_AUTO for Exynos3250 Łukasz Stelmach 2020-10-01 15:21 ` Łukasz Stelmach 2020-10-01 19:04 ` Krzysztof Kozlowski 2020-10-01 19:04 ` Krzysztof Kozlowski [not found] ` <CGME20201002101408eucas1p121c21cde5e644992078978d9bf1c5194@eucas1p1.samsung.com> 2020-10-02 10:13 ` Lukasz Stelmach 2020-10-02 10:13 ` Lukasz Stelmach [not found] ` <CGME20201001152247eucas1p2b6b1cc61b9b175b0a621609cd58effbd@eucas1p2.samsung.com> 2020-10-01 15:21 ` [PATCH v2 RESEND 3/9] spi: spi-s3c64xx: Check return values Łukasz Stelmach 2020-10-01 15:21 ` Łukasz Stelmach [not found] ` <CGME20201001152247eucas1p2afff5b5b73f78d7c5111ac1c800e718a@eucas1p2.samsung.com> 2020-10-01 15:21 ` [PATCH v2 RESEND 4/9] spi: spi-s3c64xx: Report more information when errors occur Łukasz Stelmach 2020-10-01 15:21 ` Łukasz Stelmach [not found] ` <CGME20201001152248eucas1p10219600aaa0df6e030d2493b2aefbe92@eucas1p1.samsung.com> 2020-10-01 15:21 ` [PATCH v2 RESEND 5/9] spi: spi-s3c64xx: Rename S3C64XX_SPI_SLAVE_* to S3C64XX_SPI_CS_* Łukasz Stelmach 2020-10-01 15:21 ` Łukasz Stelmach [not found] ` <CGME20201001152248eucas1p12f71c21a5873b6360e4b38efebb50271@eucas1p1.samsung.com> 2020-10-01 15:21 ` [PATCH v2 RESEND 6/9] spi: spi-s3c64xx: Fix doc comment for struct s3c64xx_spi_driver_data Łukasz Stelmach 2020-10-01 15:21 ` Łukasz Stelmach [not found] ` <CGME20201001152248eucas1p132a63f588f62d902879322ebadd67173@eucas1p1.samsung.com> 2020-10-01 15:21 ` [PATCH v2 RESEND 7/9] spi: spi-s3c64xx: Ensure cur_speed holds actual clock value Łukasz Stelmach 2020-10-01 15:21 ` Łukasz Stelmach 2020-10-01 19:12 ` Krzysztof Kozlowski 2020-10-01 19:12 ` Krzysztof Kozlowski [not found] ` <CGME20201001152249eucas1p1c3bbe7b2a677affe4e1a1e4d469f94c8@eucas1p1.samsung.com> 2020-10-01 15:21 ` [PATCH v2 RESEND 8/9] spi: spi-s3c64xx: Increase transfer timeout Łukasz Stelmach 2020-10-01 15:21 ` Łukasz Stelmach [not found] ` <CGME20201001152249eucas1p165b78adf542a48b38b49cb5e00500e26@eucas1p1.samsung.com> 2020-10-01 15:21 ` [PATCH v2 RESEND 9/9] spi: spi-s3c64xx: Turn on interrupts upon resume Łukasz Stelmach 2020-10-01 15:21 ` Łukasz Stelmach 2020-10-01 16:13 ` [PATCH v2 RESEND 0/9] Some fixes for spi-s3c64xx Mark Brown 2020-10-01 16:13 ` Mark Brown [not found] ` <CGME20201001182315eucas1p1b1fc9d5d0ea91db6e56e92d5cf2583e5@eucas1p1.samsung.com> 2020-10-01 18:23 ` Lukasz Stelmach 2020-10-01 18:23 ` Lukasz Stelmach 2020-10-01 19:02 ` Krzysztof Kozlowski 2020-10-01 19:02 ` Krzysztof Kozlowski 2020-10-01 19:43 ` Mark Brown 2020-10-01 19:43 ` Mark Brown 2020-10-02 6:18 ` Krzysztof Kozlowski 2020-10-02 6:18 ` Krzysztof Kozlowski
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