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Thu, 1 Oct 2020 15:22:46 +0000 (GMT) From: =?utf-8?q?=C5=81ukasz_Stelmach?= To: Kukjin Kim , Krzysztof Kozlowski , Tomasz Figa , Andi Shyti , Mark Brown , 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, =?utf-8?q?=C5=81ukas?= =?utf-8?q?z_Stelmach?= Subject: [PATCH v2 RESEND 1/9] spi: spi-s3c64xx: swap s3c64xx_spi_set_cs() and s3c64xx_enable_datapath() Date: Thu, 1 Oct 2020 17:21:40 +0200 Message-Id: <20201001152148.29747-2-l.stelmach@samsung.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20201001152148.29747-1-l.stelmach@samsung.com> MIME-Version: 1.0 Organization: Samsung R&D Institute Poland X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrNKsWRmVeSWpSXmKPExsWy7djP87puX0rjDX7+MrdY/OM5k8XGGetZ LaY+fMJm0f/4NbPF+fMb2C1uHlrBaLHp8TVWi8u75rBZzDi/j8mi8eNNdou1R+6yW6za9YfR gcfj+pJPzB47Z91l99i0qpPNY/OSeo++LasYPT5vkgtgi+KySUnNySxLLdK3S+DKeHI2p+Ap e0XLm2usDYx72boYOTkkBEwkXk/bB2RzcQgJrGCUmPvqKguE84VR4tS3KcwQzmdGiZ8/prPC tHw71QKVWM4oMW3SdXYI5zmjxLfGuYwgVWwCjhL9S0+wgiREBLYzSUz8fJ4FJMEsUCrRs/MQ 2HZhgSyJey9fg9ksAqoS83uWMIHYvALWEk2nbjFDrJOXaF++HayGU8BG4tzEw2wQNYISJ2c+ AZvJL6AlsabpOtR8eYnmrbPBzpMQuMcucWjFByaIQS4SN452QQ0Vlnh1fAs7hC0jcXpyD1Az B5BdLzF5khlEbw+jxLY5P1ggaqwl7pz7xQZSwyygKbF+lz5E2FHiw/15zBCtfBI33gpCnMAn MWnbdKgwr0RHmxBEtYrEuv49UAOlJHpfrWCcwKg0C8kzs5A8MAth1wJG5lWM4qmlxbnpqcWG eanlesWJucWleel6yfm5mxiBSer0v+OfdjB+vZR0iFGAg1GJhzfjUGm8EGtiWXFl7iFGCQ5m JRFep7On44R4UxIrq1KL8uOLSnNSiw8xSnOwKInzGi96GSskkJ5YkpqdmlqQWgSTZeLglGpg FKyt2/6758HttN8bT662r40penN4Tanl8pjWJ3Xftpp/rsk8rKK//K9f/lkX7ZWZ5TvZj9xQ TnU+cGriW2En5eX/ZIq/bAgRnLCi815DSYtma678N0nPfME1M3br8DIxVakrb1d3XbXgqr35 vvLsP+6i9yRPvL1h1irKPWXH6ZRMEze7SapKSizFGYmGWsxFxYkAmrCkhU4DAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrNIsWRmVeSWpSXmKPExsVy+t/xe7puX0rjDRY1qFgs/vGcyWLjjPWs FlMfPmGz6H/8mtni/PkN7BY3D61gtNj0+BqrxeVdc9gsZpzfx2TR+PEmu8XaI3fZLVbt+sPo wONxfcknZo+ds+6ye2xa1cnmsXlJvUffllWMHp83yQWwRenZFOWXlqQqZOQXl9gqRRtaGOkZ WlroGZlY6hkam8daGZkq6dvZpKTmZJalFunbJehlPDmbU/CUvaLlzTXWBsa9bF2MnBwSAiYS 3061MHcxcnEICSxllLjx9gVrFyMHUEJKYuXcdIgaYYk/17rYIGqeMkps2jqHFSTBJuAo0b/0 BCtIQkRgP5PEpQv3WUASzALlEpdmPWcHsYUFMiS+NUwGi7MIqErM71nCBGLzClhLNJ26xQyx QV6iffl2sIs4BWwkzk08DGYLCeRK7N59lA2iXlDi5MwnLCDHMQuoS6yfJwQS5hfQkljTdB1q rbxE89bZzBMYhWYh6ZiF0DELSdUCRuZVjCKppcW56bnFRnrFibnFpXnpesn5uZsYgRG57djP LTsYu94FH2IU4GBU4uEVOFAaL8SaWFZcmXuIUYKDWUmE1+ns6Tgh3pTEyqrUovz4otKc1OJD jKZAb05klhJNzgcmi7ySeENTQ3MLS0NzY3NjMwslcd4OgYMxQgLpiSWp2ampBalFMH1MHJxS DYxr5+xZlKy4N+71D3GDJefDkvN4/0js27TlanJp3bY3NcaLb3NO1ZJW9j/bbdxeuuTYiqea WQuD8nYd6z7UzD9nrhr3rJB/y7SW7dizqKajz/Vo9XfVvYwvjgg8TfHjiRN9X+/9h22GT1Py o42rrki02qu5fzH0XVJ7/sGh+Yu3bHD04fxwu3aHEktxRqKhFnNRcSIALolJXd4CAAA= X-CMS-MailID: 20201001152246eucas1p1b4155ab4f06a39cc88f205b4a7cd47f9 X-Msg-Generator: CA X-RootMTR: 20201001152246eucas1p1b4155ab4f06a39cc88f205b4a7cd47f9 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20201001152246eucas1p1b4155ab4f06a39cc88f205b4a7cd47f9 References: <20200821161401.11307-1-l.stelmach@samsung.com> <20201001152148.29747-1-l.stelmach@samsung.com> Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org 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 Signed-off-by: Łukasz Stelmach --- 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) From patchwork Thu Oct 1 15:21:41 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?=C5=81ukasz_Stelmach?= X-Patchwork-Id: 11811679 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 5795A13B2 for ; 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Thu, 1 Oct 2020 15:22:46 +0000 (GMT) X-AuditID: cbfec7f5-38bff700000018ae-9a-5f75f447e2a4 Received: from eusmtip2.samsung.com ( [203.254.199.222]) by eusmgms1.samsung.com (EUCPMTA) with SMTP id 60.A5.06314.644F57F5; Thu, 1 Oct 2020 16:22:46 +0100 (BST) Received: from localhost (unknown [106.120.51.46]) by eusmtip2.samsung.com (KnoxPortal) with ESMTPA id 20201001152246eusmtip27567bf4ee78a026fc47809313be6e230~555RXVCPs0082600826eusmtip28; Thu, 1 Oct 2020 15:22:46 +0000 (GMT) From: =?utf-8?q?=C5=81ukasz_Stelmach?= To: Kukjin Kim , Krzysztof Kozlowski , Tomasz Figa , Andi Shyti , Mark Brown , 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, =?utf-8?q?=C5=81ukas?= =?utf-8?q?z_Stelmach?= Subject: [PATCH v2 RESEND 2/9] spi: spi-s3s64xx: Add S3C64XX_SPI_QUIRK_CS_AUTO for Exynos3250 Date: Thu, 1 Oct 2020 17:21:41 +0200 Message-Id: <20201001152148.29747-3-l.stelmach@samsung.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20201001152148.29747-1-l.stelmach@samsung.com> MIME-Version: 1.0 Organization: Samsung R&D Institute Poland X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrFKsWRmVeSWpSXmKPExsWy7djPc7ruX0rjDb4sFLRY/OM5k8XGGetZ LaY+fMJm0f/4NbPF+fMb2C1uHlrBaLHp8TVWi8u75rBZzDi/j8mi8eNNdou1R+6yW6za9YfR gcfj+pJPzB47Z91l99i0qpPNY/OSeo++LasYPT5vkgtgi+KySUnNySxLLdK3S+DK2PLtPXvB DraKgz+fszYwbmLtYuTkkBAwkTh9ZAuQzcUhJLCCUeJc9wwo5wujxPKO6ywQzmdGid1PNjDD tCyYMIUdIrGcUeLvt0VsEM5zRonW/beZQKrYBBwl+peeAJslIrCdSWLi5/MsIAlmgVKJnp2H 2EBsYYF4ic29m4HiHBwsAqoSz9+bgYR5Bawl+o5sgdomL9G+fDtYOaeAjcS5iYfZIGoEJU7O fAI2kl9AS2JN03Wo8fISzVtnM4PslRC4xy7x+Mt0dohBLhIX7hxngrCFJV4d3wIVl5H4v3M+ E8gNEgL1EpMnmUH09jBKbJvzgwWixlrizrlfbCA1zAKaEut36UOUO0q0XIIy+SRuvBWEuIBP YtK26cwQYV6JjjYhiBkqEuv690DNk5LofbWCcQKj0iwkv8xCcv8shFULGJlXMYqnlhbnpqcW G+ellusVJ+YWl+al6yXn525iBKao0/+Of93BuO9P0iFGAQ5GJR7ejEOl8UKsiWXFlbmHGCU4 mJVEeJ3Ono4T4k1JrKxKLcqPLyrNSS0+xCjNwaIkzmu86GWskEB6YklqdmpqQWoRTJaJg1Oq gVGzTSa039RAQIzrplb9sV2rJqsvUdJdsugkd3Kf6cMpk6LLD3w+b7xMa4H6VUbfhpPTZyk9 +3JmoW7KlYkKB5eZPlknP02usc2esWaf74ImuV1lLXUrw1hXJy96u1LenInhnl56vxx/9zzF ZIYNtyLFV+VUHC7r8o64y9u26NbsBVp2lV/1w5VYijMSDbWYi4oTAQYRY11NAwAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrNIsWRmVeSWpSXmKPExsVy+t/xe7puX0rjDZavt7RY/OM5k8XGGetZ LaY+fMJm0f/4NbPF+fMb2C1uHlrBaLHp8TVWi8u75rBZzDi/j8mi8eNNdou1R+6yW6za9YfR gcfj+pJPzB47Z91l99i0qpPNY/OSeo++LasYPT5vkgtgi9KzKcovLUlVyMgvLrFVija0MNIz tLTQMzKx1DM0No+1MjJV0rezSUnNySxLLdK3S9DL2PLtPXvBDraKgz+fszYwbmLtYuTkkBAw kVgwYQp7FyMXh5DAUkaJv2efATkcQAkpiZVz0yFqhCX+XOtig6h5yijRNnktO0iCTcBRon/p CVaQhIjAfiaJSxfus4AkmAXKJS7Neg5WJCwQK/H43U1GkKEsAqoSz9+bgYR5Bawl+o5sYYZY IC/Rvnw7G4jNKWAjcW7iYTBbSCBXYvfuo2wQ9YISJ2c+YQEZwyygLrF+nhBImF9AS2JN03Wo rfISzVtnM09gFJqFpGMWQscsJFULGJlXMYqklhbnpucWG+oVJ+YWl+al6yXn525iBEbktmM/ N+9gvLQx+BCjAAejEg+vwIHSeCHWxLLiytxDjBIczEoivE5nT8cJ8aYkVlalFuXHF5XmpBYf YjQF+nIis5Rocj4wWeSVxBuaGppbWBqaG5sbm1koifN2CByMERJITyxJzU5NLUgtgulj4uCU amAsXeFgOTcrUOmsYHXaovd6MmI5qtOfxdrzpLFvenm/PJvXaNERLkfHia3Kf14e3BCVpfCs 0zHultVP790JJROnmM+9/XFlcDNvVfuueYuMla5Hux9XcXsxeblQUmNN+VLp5HcPSmcpRd1V cd94wzr/ZjOPhv8cjZ1q0z0U7rv2JtnlLp4lEqTEUpyRaKjFXFScCAAx+xko3gIAAA== X-CMS-MailID: 20201001152246eucas1p2fb22ab55c276d76c4508142842c90ab8 X-Msg-Generator: CA X-RootMTR: 20201001152246eucas1p2fb22ab55c276d76c4508142842c90ab8 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20201001152246eucas1p2fb22ab55c276d76c4508142842c90ab8 References: <20200821161401.11307-1-l.stelmach@samsung.com> <20201001152148.29747-1-l.stelmach@samsung.com> Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org Fix issues with DMA transfers bigger than 512 bytes on Exynos3250. Without the patches such transfers fail. The vendor kernel for ARTIK5 handles CS in a simmilar way. Signed-off-by: Łukasz Stelmach Reviewed-by: Krzysztof Kozlowski --- drivers/spi/spi-s3c64xx.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index 26c7cb79cd78..22bf8c75580a 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -1379,6 +1379,7 @@ static struct s3c64xx_spi_port_config exynos4_spi_port_config = { .tx_st_done = 25, .high_speed = true, .clk_from_cmu = true, + .quirks = S3C64XX_SPI_QUIRK_CS_AUTO, }; static struct s3c64xx_spi_port_config exynos7_spi_port_config = { From patchwork Thu Oct 1 15:21:42 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?=C5=81ukasz_Stelmach?= X-Patchwork-Id: 11811663 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 454E56CA for ; Thu, 1 Oct 2020 15:22:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1C4FA22207 for ; 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Thu, 1 Oct 2020 15:22:47 +0000 (GMT) X-AuditID: cbfec7f4-677ff7000000176d-52-5f75f44706c4 Received: from eusmtip2.samsung.com ( [203.254.199.222]) by eusmgms1.samsung.com (EUCPMTA) with SMTP id 61.A5.06314.744F57F5; Thu, 1 Oct 2020 16:22:47 +0100 (BST) Received: from localhost (unknown [106.120.51.46]) by eusmtip2.samsung.com (KnoxPortal) with ESMTPA id 20201001152247eusmtip213a4aa992176591bd792eeffd552a52f~555RsLrr-0513205132eusmtip2T; Thu, 1 Oct 2020 15:22:47 +0000 (GMT) From: =?utf-8?q?=C5=81ukasz_Stelmach?= To: Kukjin Kim , Krzysztof Kozlowski , Tomasz Figa , Andi Shyti , Mark Brown , 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, =?utf-8?q?=C5=81ukas?= =?utf-8?q?z_Stelmach?= Subject: [PATCH v2 RESEND 3/9] spi: spi-s3c64xx: Check return values Date: Thu, 1 Oct 2020 17:21:42 +0200 Message-Id: <20201001152148.29747-4-l.stelmach@samsung.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20201001152148.29747-1-l.stelmach@samsung.com> MIME-Version: 1.0 Organization: Samsung R&D Institute Poland X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrDKsWRmVeSWpSXmKPExsWy7djPc7ruX0rjDbav1bJY/OM5k8XGGetZ LaY+fMJm0f/4NbPF+fMb2C1uHlrBaLHp8TVWi8u75rBZzDi/j8mi8eNNdou1R+6yW6za9YfR gcfj+pJPzB47Z91l99i0qpPNY/OSeo++LasYPT5vkgtgi+KySUnNySxLLdK3S+DKmLh0GVvB b42KpQsvMDUwrlXsYuTkkBAwkbi06Bx7FyMXh5DACkaJNS+3sUI4XxgljsyYDuV8ZpSY0zOb Ba7lezsLRGI5o8T5lkVQ/c8ZJTZNb2AGqWITcJToX3oCrF1EYDuTxMTP58HamQVKJXp2HmID sYUFXCSWPLsDFmcRUJU4/WwdE4jNK2AtcftVIxvEOnmJ9uXbwWxOARuJcxMPs0HUCEqcnPkE rJdfQEtiTdN1qPnyEs1bZzODLJYQuMUusfLNMSaIQS4SN9uOQA0Vlnh1fAs7hC0jcXpyD1Az B5BdLzF5khlEbw+jxLY5P6B+tpa4c+4XG0gNs4CmxPpd+hBhR4kzhw6yQrTySdx4KwhxAp/E pG3TmSHCvBIdbUIQ1SoS6/r3QA2Ukuh9tYJxAqPSLCTPzELywCyEXQsYmVcxiqeWFuempxYb 5aWW6xUn5haX5qXrJefnbmIEpqnT/45/2cG460/SIUYBDkYlHl6BA6XxQqyJZcWVuYcYJTiY lUR4nc6ejhPiTUmsrEotyo8vKs1JLT7EKM3BoiTOa7zoZayQQHpiSWp2ampBahFMlomDU6qB cZnH32CZZWa57/vnK0R8q3rjuHgdx3GGB9ZLL7B/lZhUeVP/0ut9BqufT9A/dURqZaf9k7z8 LEYJdoXPUsK9+0/PMl62d97EjP+sb3tZuYT3RQpICnnt21x75F5eBYNxuPBjn4ip4V8LI6d9 uqDkpl8fLnYy8/vrlwejt2za5H9lbcjHItWTS5RYijMSDbWYi4oTAbnBs0VPAwAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrDIsWRmVeSWpSXmKPExsVy+t/xe7ruX0rjDb69EbRY/OM5k8XGGetZ LaY+fMJm0f/4NbPF+fMb2C1uHlrBaLHp8TVWi8u75rBZzDi/j8mi8eNNdou1R+6yW6za9YfR gcfj+pJPzB47Z91l99i0qpPNY/OSeo++LasYPT5vkgtgi9KzKcovLUlVyMgvLrFVija0MNIz tLTQMzKx1DM0No+1MjJV0rezSUnNySxLLdK3S9DLmLh0GVvBb42KpQsvMDUwrlXsYuTkkBAw kbj0vZ2li5GLQ0hgKaPE7y+ngBwOoISUxMq56RA1whJ/rnWxQdQ8ZZRYe+onC0iCTcBRon/p CVaQhIjAfiaJSxfugyWYBcolLs16zg5iCwu4SCx5dgcsziKgKnH62TomEJtXwFri9qtGNogN 8hLty7eD2ZwCNhLnJh4Gs4UEciV27z7KBlEvKHFy5hOw45gF1CXWzxMCCfMLaEmsaboOtVZe onnrbOYJjEKzkHTMQuiYhaRqASPzKkaR1NLi3PTcYkO94sTc4tK8dL3k/NxNjMCY3Hbs5+Yd jJc2Bh9iFOBgVOLhFThQGi/EmlhWXJl7iFGCg1lJhNfp7Ok4Id6UxMqq1KL8+KLSnNTiQ4ym QG9OZJYSTc4Hpou8knhDU0NzC0tDc2NzYzMLJXHeDoGDMUIC6YklqdmpqQWpRTB9TBycUg2M Jqwd/cs2iD51KHq3yOLei9Dqmbf0dhzRuHMgWsa3PWVqRIrROv27Hqt1/gape7Ddnu3445mt V0bB5+mK+f2+e3Kv/liutCVqwk5F1/UZDEXZKh/LdN6fSl185MXTj7fP1Fs9+f9HZlGSx8+9 +h6djU+2/X7i3J3mEMxumff5AxO7qs3CMuYJSizFGYmGWsxFxYkAr+VeSt8CAAA= X-CMS-MailID: 20201001152247eucas1p2b6b1cc61b9b175b0a621609cd58effbd X-Msg-Generator: CA X-RootMTR: 20201001152247eucas1p2b6b1cc61b9b175b0a621609cd58effbd X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20201001152247eucas1p2b6b1cc61b9b175b0a621609cd58effbd References: <20200821161401.11307-1-l.stelmach@samsung.com> <20201001152148.29747-1-l.stelmach@samsung.com> Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org Check return values in prepare_dma() and s3c64xx_spi_config() and propagate errors upwards. Fixes: 788437273fa8 ("spi: s3c64xx: move to generic dmaengine API") Reviewed-by: Krzysztof Kozlowski Signed-off-by: Łukasz Stelmach --- drivers/spi/spi-s3c64xx.c | 50 ++++++++++++++++++++++++++++++++------- 1 file changed, 41 insertions(+), 9 deletions(-) diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index 22bf8c75580a..f7482f2f1e13 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -122,6 +122,7 @@ struct s3c64xx_spi_dma_data { struct dma_chan *ch; + dma_cookie_t cookie; enum dma_transfer_direction direction; }; @@ -271,12 +272,13 @@ static void s3c64xx_spi_dmacb(void *data) spin_unlock_irqrestore(&sdd->lock, flags); } -static void prepare_dma(struct s3c64xx_spi_dma_data *dma, +static int prepare_dma(struct s3c64xx_spi_dma_data *dma, struct sg_table *sgt) { struct s3c64xx_spi_driver_data *sdd; struct dma_slave_config config; struct dma_async_tx_descriptor *desc; + int ret; memset(&config, 0, sizeof(config)); @@ -300,12 +302,24 @@ static void prepare_dma(struct s3c64xx_spi_dma_data *dma, desc = dmaengine_prep_slave_sg(dma->ch, sgt->sgl, sgt->nents, dma->direction, DMA_PREP_INTERRUPT); + if (!desc) { + dev_err(&sdd->pdev->dev, "unable to prepare %s scatterlist", + dma->direction == DMA_DEV_TO_MEM ? "rx" : "tx"); + return -ENOMEM; + } desc->callback = s3c64xx_spi_dmacb; desc->callback_param = dma; - dmaengine_submit(desc); + dma->cookie = dmaengine_submit(desc); + ret = dma_submit_error(dma->cookie); + if (ret) { + dev_err(&sdd->pdev->dev, "DMA submission failed"); + return -EIO; + } + dma_async_issue_pending(dma->ch); + return 0; } static void s3c64xx_spi_set_cs(struct spi_device *spi, bool enable) @@ -355,11 +369,12 @@ static bool s3c64xx_spi_can_dma(struct spi_master *master, return xfer->len > (FIFO_LVL_MASK(sdd) >> 1) + 1; } -static void s3c64xx_enable_datapath(struct s3c64xx_spi_driver_data *sdd, +static int s3c64xx_enable_datapath(struct s3c64xx_spi_driver_data *sdd, struct spi_transfer *xfer, int dma_mode) { void __iomem *regs = sdd->regs; u32 modecfg, chcfg; + int ret = 0; modecfg = readl(regs + S3C64XX_SPI_MODE_CFG); modecfg &= ~(S3C64XX_SPI_MODE_TXDMA_ON | S3C64XX_SPI_MODE_RXDMA_ON); @@ -385,7 +400,7 @@ static void s3c64xx_enable_datapath(struct s3c64xx_spi_driver_data *sdd, chcfg |= S3C64XX_SPI_CH_TXCH_ON; if (dma_mode) { modecfg |= S3C64XX_SPI_MODE_TXDMA_ON; - prepare_dma(&sdd->tx_dma, &xfer->tx_sg); + ret = prepare_dma(&sdd->tx_dma, &xfer->tx_sg); } else { switch (sdd->cur_bpw) { case 32: @@ -417,12 +432,17 @@ static void s3c64xx_enable_datapath(struct s3c64xx_spi_driver_data *sdd, writel(((xfer->len * 8 / sdd->cur_bpw) & 0xffff) | S3C64XX_SPI_PACKET_CNT_EN, regs + S3C64XX_SPI_PACKET_CNT); - prepare_dma(&sdd->rx_dma, &xfer->rx_sg); + ret = prepare_dma(&sdd->rx_dma, &xfer->rx_sg); } } + if (ret) + return ret; + writel(modecfg, regs + S3C64XX_SPI_MODE_CFG); writel(chcfg, regs + S3C64XX_SPI_CH_CFG); + + return 0; } static u32 s3c64xx_spi_wait_for_timeout(struct s3c64xx_spi_driver_data *sdd, @@ -555,9 +575,10 @@ static int s3c64xx_wait_for_pio(struct s3c64xx_spi_driver_data *sdd, return 0; } -static void s3c64xx_spi_config(struct s3c64xx_spi_driver_data *sdd) +static int s3c64xx_spi_config(struct s3c64xx_spi_driver_data *sdd) { void __iomem *regs = sdd->regs; + int ret; u32 val; /* Disable Clock */ @@ -605,7 +626,9 @@ static void s3c64xx_spi_config(struct s3c64xx_spi_driver_data *sdd) if (sdd->port_conf->clk_from_cmu) { /* The src_clk clock is divided internally by 2 */ - clk_set_rate(sdd->src_clk, sdd->cur_speed * 2); + ret = clk_set_rate(sdd->src_clk, sdd->cur_speed * 2); + if (ret) + return ret; } else { /* Configure Clock */ val = readl(regs + S3C64XX_SPI_CLK_CFG); @@ -619,6 +642,8 @@ static void s3c64xx_spi_config(struct s3c64xx_spi_driver_data *sdd) val |= S3C64XX_SPI_ENCLK_ENABLE; writel(val, regs + S3C64XX_SPI_CLK_CFG); } + + return 0; } #define XFER_DMAADDR_INVALID DMA_BIT_MASK(32) @@ -661,7 +686,9 @@ static int s3c64xx_spi_transfer_one(struct spi_master *master, sdd->cur_bpw = bpw; sdd->cur_speed = speed; sdd->cur_mode = spi->mode; - s3c64xx_spi_config(sdd); + status = s3c64xx_spi_config(sdd); + if (status) + return status; } if (!is_polling(sdd) && (xfer->len > fifo_len) && @@ -688,10 +715,15 @@ static int s3c64xx_spi_transfer_one(struct spi_master *master, /* Start the signals */ s3c64xx_spi_set_cs(spi, true); - s3c64xx_enable_datapath(sdd, xfer, use_dma); + status = s3c64xx_enable_datapath(sdd, xfer, use_dma); spin_unlock_irqrestore(&sdd->lock, flags); + if (status) { + dev_err(&spi->dev, "failed to enable data path for transfer: %d\n", status); + break; + } + if (use_dma) status = s3c64xx_wait_for_dma(sdd, xfer); else From patchwork Thu Oct 1 15:21:43 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?=C5=81ukasz_Stelmach?= X-Patchwork-Id: 11811691 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 06CAA6CB for ; Thu, 1 Oct 2020 15:23:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E11CD207F7 for ; Thu, 1 Oct 2020 15:23:14 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=samsung.com header.i=@samsung.com header.b="f+OjS8rM" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732684AbgJAPWu (ORCPT ); Thu, 1 Oct 2020 11:22:50 -0400 Received: from mailout2.w1.samsung.com ([210.118.77.12]:41177 "EHLO mailout2.w1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732555AbgJAPWt (ORCPT ); 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Thu, 1 Oct 2020 15:22:47 +0000 (GMT) From: =?utf-8?q?=C5=81ukasz_Stelmach?= To: Kukjin Kim , Krzysztof Kozlowski , Tomasz Figa , Andi Shyti , Mark Brown , 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, =?utf-8?q?=C5=81ukas?= =?utf-8?q?z_Stelmach?= Subject: [PATCH v2 RESEND 4/9] spi: spi-s3c64xx: Report more information when errors occur Date: Thu, 1 Oct 2020 17:21:43 +0200 Message-Id: <20201001152148.29747-5-l.stelmach@samsung.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20201001152148.29747-1-l.stelmach@samsung.com> MIME-Version: 1.0 Organization: Samsung R&D Institute Poland X-Brightmail-Tracker: H4sIAAAAAAAAA01SfUgTYRjv3W1353D2tgQf7EMYFWRljfVxkX0YQROC6t+o1qrDWW7ari2N IE3ItJVNkWwOLK1co+Uy29Qi8YqsJBcp6UwlsVqWC0ojC8223SL/+73P7+t54KUJeYskkc40 HGeNBm2WgpSKPU9/da5Qj5s0qz68oJnaiYCIuVtZL2Eqht6TTOnwF4Lx+dwU4+cdiGkYfiNh ulrsJFPpeyRiCr75Kcb1ZIBinC2TaEusuuf6d0LdbBug1A3OYlJ97/pp9cVGJ1KPNSzcRe6R ph5mszLNrHHlpgNS3dcXQ6IcvyyXH+6m8lFQWoJiaMCrwVt9gwhjOXYgKO47VoKkITyOgLd2 iQRiDMFTe/I/gzt/SiyI6hAEe5yU8AggmK71RKJInAalN55JwkQ89orAOuYThwkCm8DSzJNh PBfvhba2e5EKMV4Mr9+NRrAMb4Amy6BYqEuCojpvRB+DU6HT+pgUNHPg+ZX3Ec1snAy3z/RE 85Og8H4VES4G3EdBQadHJARtg6nznygBz4XP7Y1RPB86yi0hMx3Cp6G8bK3gtSDw2CeiS2yA /s7fZFhD4KVQ37JSGKfBYMUQJVjjoDc4R1ghDso8lwlhLINzZ+WCehHcKX0YDUyEC58d6BJS 2GYcY5txgO1/11VEOFECa+L0GSynNLAnUjitnjMZMlIOZesbUOhHdfxp/96Efrw+yCNMI0Ws TMebNHKJ1szl6XkENKGIl2192bFfLjuszTvJGrM1RlMWy/FoHi1WJMhUNSP75DhDe5w9yrI5 rPEfK6JjEvMRVNLr1pvG41npaLXbqpuIU7WXWxqXfNTXBty3cF3vAr46qUT5ZXuj60jCxret s9LSM6c1a2Ldk4XpFfZgrX/RKdeKzc/NKaruaodvp3nqVXor/fMuJ1qmHO/YMe3SjOo478t3 /dhblNJTtVc1a2vNtd4A/jDyoH7wpmr57lyFmNNplcmEkdP+Bb51X9tNAwAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrNIsWRmVeSWpSXmKPExsVy+t/xe7ruX0rjDbp36Vgs/vGcyWLjjPWs FlMfPmGz6H/8mtni/PkN7BY3D61gtNj0+BqrxeVdc9gsZpzfx2TR+PEmu8XaI3fZLVbt+sPo wONxfcknZo+ds+6ye2xa1cnmsXlJvUffllWMHp83yQWwRenZFOWXlqQqZOQXl9gqRRtaGOkZ WlroGZlY6hkam8daGZkq6dvZpKTmZJalFunbJehlvDv1kKngJm/FocdX2BsY33J1MXJySAiY SGxo+MvSxcjFISSwlFHidPcJIIcDKCElsXJuOkSNsMSfa11sEDVPGSUmL2tlAkmwCThK9C89 wQqSEBHYzyRx6cJ9FpAEs0C5xKVZz9lBBgkLREn8vugOEmYRUJW49OANWC+vgLXEjp57LBAL 5CXal29nA7E5BWwkzk08DGYLCeRK7N59lA2iXlDi5MwnYLcxC6hLrJ8nBBLmF9CSWNN0HWqr vETz1tnMExiFZiHpmIXQMQtJ1QJG5lWMIqmlxbnpucVGesWJucWleel6yfm5mxiBEbnt2M8t Oxi73gUfYhTgYFTi4RU4UBovxJpYVlyZe4hRgoNZSYTX6ezpOCHelMTKqtSi/Pii0pzU4kOM pkBvTmSWEk3OByaLvJJ4Q1NDcwtLQ3Njc2MzCyVx3g6BgzFCAumJJanZqakFqUUwfUwcnFIN jFVNv7w9PX6cfa3i8Cvgu6qUzlRLhSpll5/1qcz/d4ZX1VqWrMvWn2Z+2ENhes42rkt1ccpW y5ZYfp40I1o3RcMgz+biBnWJzTee/bu+TYIh9sESUcuvXgJ7nwnKVyUtU/u2mv2J7TSbPuuO fLcHq45kMzqohtyoFix9JXz+Ttus5WsiMu+wK7EUZyQaajEXFScCAIhNVlHeAgAA X-CMS-MailID: 20201001152247eucas1p2afff5b5b73f78d7c5111ac1c800e718a X-Msg-Generator: CA X-RootMTR: 20201001152247eucas1p2afff5b5b73f78d7c5111ac1c800e718a X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20201001152247eucas1p2afff5b5b73f78d7c5111ac1c800e718a References: <20200821161401.11307-1-l.stelmach@samsung.com> <20201001152148.29747-1-l.stelmach@samsung.com> Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org Report amount of pending data when a transfer stops due to errors. Report if DMA was used to transfer data and print the status code. Reviewed-by: Krzysztof Kozlowski Signed-off-by: Łukasz Stelmach --- drivers/spi/spi-s3c64xx.c | 19 +++++++++++++++---- 1 file changed, 15 insertions(+), 4 deletions(-) diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index f7482f2f1e13..5be6f2484e86 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -731,17 +731,28 @@ static int s3c64xx_spi_transfer_one(struct spi_master *master, if (status) { dev_err(&spi->dev, - "I/O Error: rx-%d tx-%d res:rx-%c tx-%c len-%d\n", + "I/O Error: rx-%d tx-%d rx-%c tx-%c len-%d dma-%d res-(%d)\n", xfer->rx_buf ? 1 : 0, xfer->tx_buf ? 1 : 0, (sdd->state & RXBUSY) ? 'f' : 'p', (sdd->state & TXBUSY) ? 'f' : 'p', - xfer->len); + xfer->len, use_dma ? 1 : 0, status); if (use_dma) { - if (xfer->tx_buf && (sdd->state & TXBUSY)) + struct dma_tx_state s; + + if (xfer->tx_buf && (sdd->state & TXBUSY)) { + dmaengine_pause(sdd->tx_dma.ch); + dmaengine_tx_status(sdd->tx_dma.ch, sdd->tx_dma.cookie, &s); dmaengine_terminate_all(sdd->tx_dma.ch); - if (xfer->rx_buf && (sdd->state & RXBUSY)) + dev_err(&spi->dev, "TX residue: %d\n", s.residue); + + } + if (xfer->rx_buf && (sdd->state & RXBUSY)) { + dmaengine_pause(sdd->rx_dma.ch); + dmaengine_tx_status(sdd->rx_dma.ch, sdd->rx_dma.cookie, &s); dmaengine_terminate_all(sdd->rx_dma.ch); + dev_err(&spi->dev, "RX residue: %d\n", s.residue); + } } } else { s3c64xx_flush_fifo(sdd); From patchwork Thu Oct 1 15:21:44 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?=C5=81ukasz_Stelmach?= X-Patchwork-Id: 11811673 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 96B0713B2 for ; 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a=rsa-sha256; c=relaxed/relaxed; d=samsung.com; s=mail20170921; t=1601565769; bh=F7lc4bNVQrq/uJ6QtYI8r7CnZWm8NNaS58UeBeaW5GA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TdEjeD3jrkSZkfjNzkdjaShGnyI65qnBJaZ0hWpwfeT8c3KaqxrD8XkTsE23waNKP GGZSRcYnT5SHDWwaMv1pLILCWBkLNtyAWSW/WC47a5U0cfYLLNAW9/uo/gMkEd22co D7RZCNFXWNzoVHG0pDPQVIDjSpMfyvdsYLysAi7w= Received: from eusmges3new.samsung.com (unknown [203.254.199.245]) by eucas1p2.samsung.com (KnoxPortal) with ESMTP id 20201001152248eucas1p26c9e10839bf9cae4f295f353ee4f7c6c~555TIEhlr1941319413eucas1p2E; Thu, 1 Oct 2020 15:22:48 +0000 (GMT) Received: from eucas1p1.samsung.com ( [182.198.249.206]) by eusmges3new.samsung.com (EUCPMTA) with SMTP id 5D.EC.06318.844F57F5; Thu, 1 Oct 2020 16:22:48 +0100 (BST) Received: from eusmtrp1.samsung.com (unknown [182.198.249.138]) by eucas1p1.samsung.com (KnoxPortal) with ESMTPA id 20201001152248eucas1p10219600aaa0df6e030d2493b2aefbe92~555SpEBmC1729617296eucas1p1i; Thu, 1 Oct 2020 15:22:48 +0000 (GMT) Received: from eusmgms2.samsung.com (unknown [182.198.249.180]) by eusmtrp1.samsung.com (KnoxPortal) with ESMTP id 20201001152248eusmtrp116d2e24d4c7abc58e47a58a225c1c159~555Sofy2m2671526715eusmtrp1l; Thu, 1 Oct 2020 15:22:48 +0000 (GMT) X-AuditID: cbfec7f5-371ff700000018ae-9f-5f75f448a878 Received: from eusmtip2.samsung.com ( [203.254.199.222]) by eusmgms2.samsung.com (EUCPMTA) with SMTP id F5.D5.06017.844F57F5; Thu, 1 Oct 2020 16:22:48 +0100 (BST) Received: from localhost (unknown [106.120.51.46]) by eusmtip2.samsung.com (KnoxPortal) with ESMTPA id 20201001152247eusmtip28e692c3e7a775c4fbd1a34263ac75ea4~555SbCl7k0513205132eusmtip2U; Thu, 1 Oct 2020 15:22:47 +0000 (GMT) From: =?utf-8?q?=C5=81ukasz_Stelmach?= To: Kukjin Kim , Krzysztof Kozlowski , Tomasz Figa , Andi Shyti , Mark Brown , 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, =?utf-8?q?=C5=81ukas?= =?utf-8?q?z_Stelmach?= Subject: [PATCH v2 RESEND 5/9] spi: spi-s3c64xx: Rename S3C64XX_SPI_SLAVE_* to S3C64XX_SPI_CS_* Date: Thu, 1 Oct 2020 17:21:44 +0200 Message-Id: <20201001152148.29747-6-l.stelmach@samsung.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20201001152148.29747-1-l.stelmach@samsung.com> MIME-Version: 1.0 Organization: Samsung R&D Institute Poland X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrBKsWRmVeSWpSXmKPExsWy7djPc7oeX0rjDY4vUbVY/OM5k8XGGetZ LaY+fMJm0f/4NbPF+fMb2C1uHlrBaLHp8TVWi8u75rBZzDi/j8mi8eNNdou1R+6yW6za9YfR gcfj+pJPzB47Z91l99i0qpPNY/OSeo++LasYPT5vkgtgi+KySUnNySxLLdK3S+DK+LxnE2PB etGK9ctvsDUwPhfsYuTkkBAwkVj68QlrFyMXh5DACkaJ8/dvskM4XxglJn58wAbhfGaU+PVq HTNMy7lF06ASyxklzm5fwwLhPGeUON18mh2kik3AUaJ/6QmwwSIC25kkJn4+zwKSYBYolejZ eQionYNDWCBR4ulVPxCTRUBVYs0eQ5AKXgFriQkfLrFBLJOXaF++HczmFLCRODfxMBtEjaDE yZlPwCbyC2hJrGm6DjVdXqJ562yoQ++xS/S3eICMlxBwkWj9VgMRFpZ4dXwLO4QtI3F6cg8L REm9xORJZiAHSwj0MEpsm/ODBaLGWuLOuV9gBzMLaEqs36UPEXaUeNu2hRWilU/ixltBiAP4 JCZtm84MEeaV6GgTgqhWkVjXvwdqoJRE76sVjBMYlWYheWUWkvNnIexawMi8ilE8tbQ4Nz21 2DgvtVyvODG3uDQvXS85P3cTIzA9nf53/OsOxn1/kg4xCnAwKvHwZhwqjRdiTSwrrsw9xCjB wawkwut09nScEG9KYmVValF+fFFpTmrxIUZpDhYlcV7jRS9jhQTSE0tSs1NTC1KLYLJMHJxS DYwzbcuurdeSDpDgjiqZzKJ6PUbNirv3nPSKTeXhX01WON8sqJ+RVtR/rUHqXkBu8/6/q/eF PXTdFxRWkL7swoNnk5reW3nMiWN5Zx+U0nZJ+U3uFY1d7+Pb31ZsmzvB7oTN2gWbHE+qzvfZ 4fTjOnetzaunAZ833D76PbzzjFmS7t4p9c3VDUFKLMUZiYZazEXFiQABsswWSwMAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrNIsWRmVeSWpSXmKPExsVy+t/xe7oeX0rjDS6cZrFY/OM5k8XGGetZ LaY+fMJm0f/4NbPF+fMb2C1uHlrBaLHp8TVWi8u75rBZzDi/j8mi8eNNdou1R+6yW6za9YfR gcfj+pJPzB47Z91l99i0qpPNY/OSeo++LasYPT5vkgtgi9KzKcovLUlVyMgvLrFVija0MNIz tLTQMzKx1DM0No+1MjJV0rezSUnNySxLLdK3S9DL+LxnE2PBetGK9ctvsDUwPhfsYuTkkBAw kTi3aBpbFyMXh5DAUkaJjasamLsYOYASUhIr56ZD1AhL/LnWBVXzlFFi+YR9jCAJNgFHif6l J1hBEiIC+5kkLl24zwKSYBYol7g06zk7iC0sEC/x8Pk3dpChLAKqEmv2GIKEeQWsJSZ8uMQG sUBeon35djCbU8BG4tzEw2C2kECuxO7dR9kg6gUlTs58wgIyhllAXWL9PCGQML+AlsSaputQ W+UlmrfOZp7AKDQLSccshI5ZSKoWMDKvYhRJLS3OTc8tNtIrTswtLs1L10vOz93ECIzIbcd+ btnB2PUu+BCjAAejEg+vwIHSeCHWxLLiytxDjBIczEoivE5nT8cJ8aYkVlalFuXHF5XmpBYf YjQF+nIis5Rocj4wWeSVxBuaGppbWBqaG5sbm1koifN2CByMERJITyxJzU5NLUgtgulj4uCU amCM7Vnazc629Tq/XO21R1vvWOX9v3xsq8pans0FWi1qK/s8qi7VLXMTDy/81PXcpNo+e8+G zEcPf2zd47w8pVT+6y+Wd/wLjf6/Tfj59sG25q1dZRt6WJp8nuhvEO3ODYkMXbZHMz/2njPL 5E2HeeLWy6b6TV+9qc9y/e6O2Sfrd+jKeM0RPH9IiaU4I9FQi7moOBEA9MK/p94CAAA= X-CMS-MailID: 20201001152248eucas1p10219600aaa0df6e030d2493b2aefbe92 X-Msg-Generator: CA X-RootMTR: 20201001152248eucas1p10219600aaa0df6e030d2493b2aefbe92 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20201001152248eucas1p10219600aaa0df6e030d2493b2aefbe92 References: <20200821161401.11307-1-l.stelmach@samsung.com> <20201001152148.29747-1-l.stelmach@samsung.com> Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org Rename S3C64XX_SPI_SLAVE_* to S3C64XX_SPI_CS_* to match documentation. Signed-off-by: Łukasz Stelmach Reviewed-by: Krzysztof Kozlowski --- drivers/spi/spi-s3c64xx.c | 26 +++++++++++++------------- 1 file changed, 13 insertions(+), 13 deletions(-) diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index 5be6f2484e86..adc5593ca2ca 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -29,7 +29,7 @@ #define S3C64XX_SPI_CH_CFG 0x00 #define S3C64XX_SPI_CLK_CFG 0x04 #define S3C64XX_SPI_MODE_CFG 0x08 -#define S3C64XX_SPI_SLAVE_SEL 0x0C +#define S3C64XX_SPI_CS_REG 0x0C #define S3C64XX_SPI_INT_EN 0x10 #define S3C64XX_SPI_STATUS 0x14 #define S3C64XX_SPI_TX_DATA 0x18 @@ -64,9 +64,9 @@ #define S3C64XX_SPI_MODE_TXDMA_ON (1<<1) #define S3C64XX_SPI_MODE_4BURST (1<<0) -#define S3C64XX_SPI_SLAVE_AUTO (1<<1) -#define S3C64XX_SPI_SLAVE_SIG_INACT (1<<0) -#define S3C64XX_SPI_SLAVE_NSC_CNT_2 (2<<4) +#define S3C64XX_SPI_CS_NSC_CNT_2 (2<<4) +#define S3C64XX_SPI_CS_AUTO (1<<1) +#define S3C64XX_SPI_CS_SIG_INACT (1<<0) #define S3C64XX_SPI_INT_TRAILING_EN (1<<6) #define S3C64XX_SPI_INT_RX_OVERRUN_EN (1<<5) @@ -332,18 +332,18 @@ static void s3c64xx_spi_set_cs(struct spi_device *spi, bool enable) if (enable) { if (!(sdd->port_conf->quirks & S3C64XX_SPI_QUIRK_CS_AUTO)) { - writel(0, sdd->regs + S3C64XX_SPI_SLAVE_SEL); + writel(0, sdd->regs + S3C64XX_SPI_CS_REG); } else { - u32 ssel = readl(sdd->regs + S3C64XX_SPI_SLAVE_SEL); + u32 ssel = readl(sdd->regs + S3C64XX_SPI_CS_REG); - ssel |= (S3C64XX_SPI_SLAVE_AUTO | - S3C64XX_SPI_SLAVE_NSC_CNT_2); - writel(ssel, sdd->regs + S3C64XX_SPI_SLAVE_SEL); + ssel |= (S3C64XX_SPI_CS_AUTO | + S3C64XX_SPI_CS_NSC_CNT_2); + writel(ssel, sdd->regs + S3C64XX_SPI_CS_REG); } } else { if (!(sdd->port_conf->quirks & S3C64XX_SPI_QUIRK_CS_AUTO)) - writel(S3C64XX_SPI_SLAVE_SIG_INACT, - sdd->regs + S3C64XX_SPI_SLAVE_SEL); + writel(S3C64XX_SPI_CS_SIG_INACT, + sdd->regs + S3C64XX_SPI_CS_REG); } } @@ -982,9 +982,9 @@ static void s3c64xx_spi_hwinit(struct s3c64xx_spi_driver_data *sdd) sdd->cur_speed = 0; if (sci->no_cs) - writel(0, sdd->regs + S3C64XX_SPI_SLAVE_SEL); + writel(0, sdd->regs + S3C64XX_SPI_CS_REG); else if (!(sdd->port_conf->quirks & S3C64XX_SPI_QUIRK_CS_AUTO)) - writel(S3C64XX_SPI_SLAVE_SIG_INACT, sdd->regs + S3C64XX_SPI_SLAVE_SEL); + writel(S3C64XX_SPI_CS_SIG_INACT, sdd->regs + S3C64XX_SPI_CS_REG); /* Disable Interrupts - we use Polling if not DMA mode */ writel(0, regs + S3C64XX_SPI_INT_EN); From patchwork Thu Oct 1 15:21:45 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?=C5=81ukasz_Stelmach?= X-Patchwork-Id: 11811693 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 9DC0413B2 for ; Thu, 1 Oct 2020 15:23:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 825E1207F7 for ; Thu, 1 Oct 2020 15:23:15 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=samsung.com header.i=@samsung.com header.b="RKBban36" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732535AbgJAPXO (ORCPT ); Thu, 1 Oct 2020 11:23:14 -0400 Received: from mailout2.w1.samsung.com ([210.118.77.12]:41194 "EHLO mailout2.w1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732665AbgJAPWu (ORCPT ); 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Thu, 1 Oct 2020 15:22:48 +0000 (GMT) From: =?utf-8?q?=C5=81ukasz_Stelmach?= To: Kukjin Kim , Krzysztof Kozlowski , Tomasz Figa , Andi Shyti , Mark Brown , 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, =?utf-8?q?=C5=81ukas?= =?utf-8?q?z_Stelmach?= Subject: [PATCH v2 RESEND 6/9] spi: spi-s3c64xx: Fix doc comment for struct s3c64xx_spi_driver_data Date: Thu, 1 Oct 2020 17:21:45 +0200 Message-Id: <20201001152148.29747-7-l.stelmach@samsung.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20201001152148.29747-1-l.stelmach@samsung.com> MIME-Version: 1.0 Organization: Samsung R&D Institute Poland X-Brightmail-Tracker: H4sIAAAAAAAAA01Se0hTcRjtt7vdezedXaflhz3EYUFCmiRxQw2NiP1RYCBIounKi0qbyuas FehUSJ3TpSK+0XygDdNc5vJBwhI1JB8ZPiqFUBFnkboJak+3a+R/5zvnfOc7P/iRmMjE8yST ktMYRbJUJsYF3O6hnbGzEpsq9px2LZBu3F7h0J0VHTy67MsSTusX1zB6fPw5Qc+ZWxFtXJzm 0VO9NThdMf6aQ2dtzBH0s8F5gjb0/kShzpKZpk1M0lM1T0iMhnxc8qIpU1LUZUASq/FkOB4l CI5nZEnpjML/UpwgcWS5gJe65HT/h43SID1fi/gkUIHwRP+BY8ciqhXBskWqRYI9bEOwU1CJ s4MVwdyiltAi0rHxafI0y7cgKNetYuywgmB3S+OIwqkw0DeP8OyCO2XiQLF1nGsXMEoFuh4z bsduFAODRbPInsqlTkH5vMJOC6kgaO8rRGw9L8htMTnsfCoYxorf4KzHFd5WLjkiD1O+0JY9 sx/vBTkvqx2FgFogoKf5K4dtfQWMOw/ZTDewDHcRLD4Oo6U6LmvJhNKSC+yqDkF3zTaX9QTB 57Fd3O7BqDPQ0evP0mGQU52NsasuMPvNlW3gAiXd5fu0EPIeiVi3D7Tr+/cDPaHQ0ooeI3HV gbdUHehf9f9WPcIMyINRKeUJjDIgmbnnp5TKlarkBL87KXIj2vtOo7+HN1+hrfe3zYgikdhZ mGhWxYp40nSlWm5GQGJid+Hld6O3RMJ4qfoBo0iJVahkjNKMjpFcsYfwfMNqjIhKkKYxdxkm lVH8Uzkk31ODQgaShiIzyi72rx+KXBhNiCGDV32utgomatf7NE5Hr+XFhao7Y6dTGsLrbH9C 22p1N7M6Jw0RJl5n/kap5braWxgc0bh6YjZvKmN+LEtGRLXX5DJHOio5TxvrBqwNZSb1WnnB r92YoBW0PMFEW3aJLZ/v1o/e68g5JLpeM3NDzFUmSgN8MYVS+heWnK4DSgMAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrJIsWRmVeSWpSXmKPExsVy+t/xu7oeX0rjDf6+lLRY/OM5k8XGGetZ LaY+fMJm0f/4NbPF+fMb2C1uHlrBaLHp8TVWi8u75rBZzDi/j8mi8eNNdou1R+6yW6za9YfR gcfj+pJPzB47Z91l99i0qpPNY/OSeo++LasYPT5vkgtgi9KzKcovLUlVyMgvLrFVija0MNIz tLTQMzKx1DM0No+1MjJV0rezSUnNySxLLdK3S9DLOPG0m7XgCXfF7y8CDYz9nF2MHBwSAiYS ty+qdTFycQgJLGWU2HTwOyNEXEpi5dz0LkZOIFNY4s+1LjaImqeMEmc62plAEmwCjhL9S0+w giREBPYzSVy6cJ8FJMEsUC5xadZzdhBbWCBZ4vGOH0wgQ1kEVCWm3y0CCfMKWEus293LCLFA XqJ9+XY2EJtTwEbi3MTDYLaQQK7E7t1H2SDqBSVOznzCAjKGWUBdYv08IZAwv4CWxJqm61Bb 5SWat85mnsAoNAtJxyyEjllIqhYwMq9iFEktLc5Nzy020itOzC0uzUvXS87P3cQIjMZtx35u 2cHY9S74EKMAB6MSD6/AgdJ4IdbEsuLK3EOMEhzMSiK8TmdPxwnxpiRWVqUW5ccXleakFh9i NAX6ciKzlGhyPjBR5JXEG5oamltYGpobmxubWSiJ83YIHIwREkhPLEnNTk0tSC2C6WPi4JRq YAzwmctlp7b04gRL9zeLU1PktxldWly97N/5N//Mr1mG3vQ6Ur/Sfp38fJa+ppOO+TNbth18 WPLbZNOElWw9/LvOb31RfzNg84Mv95S+i3+/0xqqzPA7eGtWt60nI3MRW5Axi6jJERXWAwy1 KaeuCuqdZNx++PqaDLfg53M1/gbJObIeNmNeH67EUpyRaKjFXFScCAATG8dW3AIAAA== X-CMS-MailID: 20201001152248eucas1p12f71c21a5873b6360e4b38efebb50271 X-Msg-Generator: CA X-RootMTR: 20201001152248eucas1p12f71c21a5873b6360e4b38efebb50271 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20201001152248eucas1p12f71c21a5873b6360e4b38efebb50271 References: <20200821161401.11307-1-l.stelmach@samsung.com> <20201001152148.29747-1-l.stelmach@samsung.com> Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org Remove descriptions for non-existent fields and fix indentation. Reviewed-by: Krzysztof Kozlowski Signed-off-by: Łukasz Stelmach --- drivers/spi/spi-s3c64xx.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index adc5593ca2ca..02de734b8ab1 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -162,11 +162,8 @@ struct s3c64xx_spi_port_config { * @cntrlr_info: Platform specific data for the controller this driver manages. * @lock: Controller specific lock. * @state: Set of FLAGS to indicate status. - * @rx_dmach: Controller's DMA channel for Rx. - * @tx_dmach: Controller's DMA channel for Tx. * @sfr_start: BUS address of SPI controller regs. * @regs: Pointer to ioremap'ed controller registers. - * @irq: interrupt * @xfer_completion: To indicate completion of xfer task. * @cur_mode: Stores the active configuration of the controller. * @cur_bpw: Stores the active bits per word settings. @@ -183,7 +180,7 @@ struct s3c64xx_spi_driver_data { struct clk *ioclk; struct platform_device *pdev; struct spi_master *master; - struct s3c64xx_spi_info *cntrlr_info; + struct s3c64xx_spi_info *cntrlr_info; spinlock_t lock; unsigned long sfr_start; struct completion xfer_completion; From patchwork Thu Oct 1 15:21:46 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?=C5=81ukasz_Stelmach?= X-Patchwork-Id: 11811685 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D9DD76CB for ; Thu, 1 Oct 2020 15:23:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B7977208B6 for ; Thu, 1 Oct 2020 15:23:13 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=samsung.com header.i=@samsung.com header.b="MMthWRY3" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732730AbgJAPXJ (ORCPT ); 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Thu, 1 Oct 2020 15:22:48 +0000 (GMT) From: =?utf-8?q?=C5=81ukasz_Stelmach?= To: Kukjin Kim , Krzysztof Kozlowski , Tomasz Figa , Andi Shyti , Mark Brown , 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, =?utf-8?q?=C5=81ukas?= =?utf-8?q?z_Stelmach?= Subject: [PATCH v2 RESEND 7/9] spi: spi-s3c64xx: Ensure cur_speed holds actual clock value Date: Thu, 1 Oct 2020 17:21:46 +0200 Message-Id: <20201001152148.29747-8-l.stelmach@samsung.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20201001152148.29747-1-l.stelmach@samsung.com> MIME-Version: 1.0 Organization: Samsung R&D Institute Poland X-Brightmail-Tracker: H4sIAAAAAAAAA02Se0hTYRjG+Xa2c47i9DgXvthFHAUpOBMrDqmRZjH/6kYYZdnMg5PclB1n aoFmqGWmqVi2pKQsRcrLvF8QndFK04FBaqk51LwheSUVyzweI/973u/9vc/7vPCRmKRG5ERG aGIYrUYZKcOthbXvV8zugYu6kAOPDAT9cnlcQFfml4voPMsoTmeNTGO02VxB0P3GEkQbRr6I 6M+NBTidb24R0Lfn+gn67btBgi5tXEPHbBS9RfOYokE/SCgMpfdwRVVRoiKzuhQpFgx7TuMX rX3CmMiIWEbrcfSqtcpkfo2i1/G4pcY0LAlNidIRQQJ1EFZ2pCMrUkKVIBjqck9H1ht6EUHm r2IRXywgmLVMCziK47M7LEK+UYygKm+V4ItxBM3LA4ijcMoPsl592ByXUnUCyF4wC7kGRukg o8GIpyOSdKCCYeJrHCeF1D6YWAngCDHlDWtLzwl+mTOkFdfhnLaifKA7ux3nGXv4+GR009GO coM3yb1b7s5wp+Ypxs8OEdDUFM7rACj7PoN47QBTpuot/13QmZsh5CIAlQi5OYe5xEBlIKgt WBbyjDcMdK9uJsYoVyhv9OBxP5g1+/LSFvpm7PkAtpBT+xjjn8VwN1XCe+yFsqzmLT8neDBV gh4imX7bKfpt8fX/VxUirBQ5MjpWHc6wnhrmhpxVqlmdJlx+LUptQBufqfOPab4eLfWEGhFF IpmNWGXUhUhEylg2Xm1EQGIyqdi/q/OKRBymjE9gtFEhWl0kwxrRTlIocxR7vZi8LKHClTHM dYaJZrT/ugLSyikJadpCbLx6mLDfXir5D4XUBSusN4amoAR3//vrFrvowSA3+Ug3Cp4Y6xo9 YXPmXIdD6thx/eScy5Fo07ihMnB//6eZ5OHqPt+zPysO+Reww+1BzxLOn6o0JY8SytVbQ99a UopbXOnW1uALc2fN0oXdResNze156ptyy8mZS1FtRTIhq1J6umFaVvkX8CCHJEgDAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrNIsWRmVeSWpSXmKPExsVy+t/xu7oeX0rjDf5161ss/vGcyWLjjPWs FlMfPmGz6H/8mtni/PkN7BY3D61gtNj0+BqrxeVdc9gsZpzfx2TR+PEmu8XaI3fZLVbt+sPo wONxfcknZo+ds+6ye2xa1cnmsXlJvUffllWMHp83yQWwRenZFOWXlqQqZOQXl9gqRRtaGOkZ WlroGZlY6hkam8daGZkq6dvZpKTmZJalFunbJehlHD+/jLHgP1vF113tzA2Mr1i7GDk5JARM JCaeesjSxcjFISSwlFFi96r7QA4HUEJKYuXcdIgaYYk/17rYIGqeMkrc7pzGDJJgE3CU6F96 ghUkISKwn0ni0gWQZk4OZoFyiUuznrOD2MICURKPV+xgBxnKIqAq8eKnC0iYV8Ba4s/X+ewQ C+Ql2pdvZwOxOQVsJM5NPAxmCwnkSuzefZQNol5Q4uTMJ2C3MQuoS6yfJwQS5hfQkljTdB1q q7xE89bZzBMYhWYh6ZiF0DELSdUCRuZVjCKppcW56bnFhnrFibnFpXnpesn5uZsYgRG57djP zTsYL20MPsQowMGoxMMrcKA0Xog1say4MvcQowQHs5IIr9PZ03FCvCmJlVWpRfnxRaU5qcWH GE2BvpzILCWanA9MFnkl8YamhuYWlobmxubGZhZK4rwdAgdjhATSE0tSs1NTC1KLYPqYODil GhgTtsZsE2/60f6nz/z6+mmBz2qvVWn/vvY1Szt3aYPI4vwgp5IlHM8TNi1dMe3oi6hc2zN7 JV+3Tv0vmBQ479LD+v/Fzm7hVUvWrmI9PG8xf7J3+zFZeUuNeTnLWVeovTrU6KARVsYpPP3H xj82v8/Me+r7K2H147lanNt2V2+c9z99RUwBN5evEktxRqKhFnNRcSIAweqE8t4CAAA= X-CMS-MailID: 20201001152248eucas1p132a63f588f62d902879322ebadd67173 X-Msg-Generator: CA X-RootMTR: 20201001152248eucas1p132a63f588f62d902879322ebadd67173 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20201001152248eucas1p132a63f588f62d902879322ebadd67173 References: <20200821161401.11307-1-l.stelmach@samsung.com> <20201001152148.29747-1-l.stelmach@samsung.com> Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org Make sure the cur_speed value used in s3c64xx_enable_datapath() to configure DMA channel and in s3c64xx_wait_for_*() to calculate the transfer timeout is set to the actual value of (half) the clock speed. Suggested-by: Tomasz Figa Signed-off-by: Łukasz Stelmach Reviewed-by: Krzysztof Kozlowski --- drivers/spi/spi-s3c64xx.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index 02de734b8ab1..89c162efe355 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -626,6 +626,7 @@ static int s3c64xx_spi_config(struct s3c64xx_spi_driver_data *sdd) ret = clk_set_rate(sdd->src_clk, sdd->cur_speed * 2); if (ret) return ret; + sdd->cur_speed = clk_get_rate(sdd->src_clk) / 2; } else { /* Configure Clock */ val = readl(regs + S3C64XX_SPI_CLK_CFG); From patchwork Thu Oct 1 15:21:47 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?=C5=81ukasz_Stelmach?= X-Patchwork-Id: 11811669 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 959AF6CA for ; 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Thu, 1 Oct 2020 15:22:49 +0000 (GMT) X-AuditID: cbfec7f5-38bff700000018ae-a2-5f75f4492abb Received: from eusmtip2.samsung.com ( [203.254.199.222]) by eusmgms1.samsung.com (EUCPMTA) with SMTP id D3.A5.06314.944F57F5; Thu, 1 Oct 2020 16:22:49 +0100 (BST) Received: from localhost (unknown [106.120.51.46]) by eusmtip2.samsung.com (KnoxPortal) with ESMTPA id 20201001152248eusmtip24cdda12d8517106e67e5454a644fa5c5~555TZRzJ_0513205132eusmtip2V; Thu, 1 Oct 2020 15:22:48 +0000 (GMT) From: =?utf-8?q?=C5=81ukasz_Stelmach?= To: Kukjin Kim , Krzysztof Kozlowski , Tomasz Figa , Andi Shyti , Mark Brown , 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, =?utf-8?q?=C5=81ukas?= =?utf-8?q?z_Stelmach?= Subject: [PATCH v2 RESEND 8/9] spi: spi-s3c64xx: Increase transfer timeout Date: Thu, 1 Oct 2020 17:21:47 +0200 Message-Id: <20201001152148.29747-9-l.stelmach@samsung.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20201001152148.29747-1-l.stelmach@samsung.com> MIME-Version: 1.0 Organization: Samsung R&D Institute Poland X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrFKsWRmVeSWpSXmKPExsWy7djP87qeX0rjDZ73S1os/vGcyWLjjPWs FlMfPmGz6H/8mtni/PkN7BY3D61gtNj0+BqrxeVdc9gsZpzfx2TR+PEmu8XaI3fZLVbt+sPo wONxfcknZo+ds+6ye2xa1cnmsXlJvUffllWMHp83yQWwRXHZpKTmZJalFunbJXBlLGtvYCz4 zFFx5cxMtgbGmexdjJwcEgImEs0dJ5i6GLk4hARWMEqsPbEGyvnCKPH1azMzhPOZUWLVq0Nw Lf9vtkMlljNKzD21khEkISTwnFFi+moeEJtNwFGif+kJVpAiEYHtTBITP59nAUkwC5RK9Ow8 xAZiCwt4SXyefB6smUVAVeLD4sVMIDavgLXExfvvmSG2yUu0L98OVs8pYCNxbuJhNogaQYmT M5+AzeQX0JJY03Qdar68RPPW2VC9j9glXs1ggrBdJA739LJA2MISr45vgfpGRuL05B6gOAeQ XS8xeZIZyM0SAj2MEtvm/ICqt5a4c+4XG0gNs4CmxPpd+hBhR4mrN18wQbTySdx4KwhxAZ/E pG3TmSHCvBIdbUIQ1SoS6/r3QA2Ukuh9tYJxAqPSLCS/zEJy/yyEXQsYmVcxiqeWFuempxYb 56WW6xUn5haX5qXrJefnbmIEpqjT/45/3cG470/SIUYBDkYlHt6MQ6XxQqyJZcWVuYcYJTiY lUR4nc6ejhPiTUmsrEotyo8vKs1JLT7EKM3BoiTOa7zoZayQQHpiSWp2ampBahFMlomDU6qB cY3uukVb++dVSISmO7x1rZo989jWP5PveHQwB31pbu1f8PJ6dqnlyt0vOyb7P7sWdfs7pzB/ 1Qylmp5taptblbffZb3zjSuneoMPXxVLY/Aduwf7LVl8eq5HfuU4UKb4Lyn7rAdv3ea3u948 t+nO9WO4Ljvl7fzi0oQsDyb7aemFQZvi3+6bpMRSnJFoqMVcVJwIAPV5V8ZNAwAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrDIsWRmVeSWpSXmKPExsVy+t/xe7qeX0rjDVqms1ss/vGcyWLjjPWs FlMfPmGz6H/8mtni/PkN7BY3D61gtNj0+BqrxeVdc9gsZpzfx2TR+PEmu8XaI3fZLVbt+sPo wONxfcknZo+ds+6ye2xa1cnmsXlJvUffllWMHp83yQWwRenZFOWXlqQqZOQXl9gqRRtaGOkZ WlroGZlY6hkam8daGZkq6dvZpKTmZJalFunbJehlLGtvYCz4zFFx5cxMtgbGmexdjJwcEgIm Ev9vtjN3MXJxCAksZZRY+eUwaxcjB1BCSmLl3HSIGmGJP9e62CBqnjJKTFywGqyZTcBRon/p CVaQhIjAfiaJSxfus4AkmAXKJS7Neg5WJCzgJfF58nlGEJtFQFXiw+LFTCA2r4C1xMX775kh NshLtC/fzgZicwrYSJybeBjMFhLIldi9+ygbRL2gxMmZT1hAjmMWUJdYP08IJMwvoCWxpuk6 1Fp5ieats5knMArNQtIxC6FjFpKqBYzMqxhFUkuLc9Nziw31ihNzi0vz0vWS83M3MQJjctux n5t3MF7aGHyIUYCDUYmHV+BAabwQa2JZcWXuIUYJDmYlEV6ns6fjhHhTEiurUovy44tKc1KL DzGaAr05kVlKNDkfmC7ySuINTQ3NLSwNzY3Njc0slMR5OwQOxggJpCeWpGanphakFsH0MXFw SjUwVt7ecPTlJ0mJ0hwPz5R19x43n12+7YTIf8mWE2pP/zcpxF/56LH0ibxxx+xLctL7T+/Q NDz/LG197PpZnq7m270cC5u2CUWFm7imtjnffrHo49KJtqeFuredF3oX/LI96JuM8IV9+bue hn1rM6ndOeVeuQXTrOSpLz49SZsxV2/hkoZnUdw7JymxFGckGmoxFxUnAgAd7q793wIAAA== X-CMS-MailID: 20201001152249eucas1p1c3bbe7b2a677affe4e1a1e4d469f94c8 X-Msg-Generator: CA X-RootMTR: 20201001152249eucas1p1c3bbe7b2a677affe4e1a1e4d469f94c8 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20201001152249eucas1p1c3bbe7b2a677affe4e1a1e4d469f94c8 References: <20200821161401.11307-1-l.stelmach@samsung.com> <20201001152148.29747-1-l.stelmach@samsung.com> Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org Increase timeout by 30 ms for some wiggle room and set the minimum value to 100 ms. This ensures a non-zero value for short transfers which may take less than 1 ms. The timeout value does not affect performance because it is used with a completion. Similar formula is used in other drivers e.g. sun4i, sun6i. Reviewed-by: Krzysztof Kozlowski Signed-off-by: Łukasz Stelmach --- drivers/spi/spi-s3c64xx.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index 89c162efe355..ea5a22dec53d 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -473,7 +473,8 @@ static int s3c64xx_wait_for_dma(struct s3c64xx_spi_driver_data *sdd, /* millisecs to xfer 'len' bytes @ 'cur_speed' */ ms = xfer->len * 8 * 1000 / sdd->cur_speed; - ms += 10; /* some tolerance */ + ms += 30; /* some tolerance */ + ms = max(ms, 100); /* minimum timeout */ val = msecs_to_jiffies(ms) + 10; val = wait_for_completion_timeout(&sdd->xfer_completion, val); From patchwork Thu Oct 1 15:21:48 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?=C5=81ukasz_Stelmach?= X-Patchwork-Id: 11811671 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6E8BE6CB for ; 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Thu, 1 Oct 2020 15:22:49 +0000 (GMT) X-AuditID: cbfec7f4-677ff7000000176d-58-5f75f4495ebf Received: from eusmtip2.samsung.com ( [203.254.199.222]) by eusmgms2.samsung.com (EUCPMTA) with SMTP id F7.D5.06017.944F57F5; Thu, 1 Oct 2020 16:22:49 +0100 (BST) Received: from localhost (unknown [106.120.51.46]) by eusmtip2.samsung.com (KnoxPortal) with ESMTPA id 20201001152249eusmtip2788ed82cb2e3736d5270d8767df6eeee~555TuJjq70082600826eusmtip2_; Thu, 1 Oct 2020 15:22:49 +0000 (GMT) From: =?utf-8?q?=C5=81ukasz_Stelmach?= To: Kukjin Kim , Krzysztof Kozlowski , Tomasz Figa , Andi Shyti , Mark Brown , 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, =?utf-8?q?=C5=81ukas?= =?utf-8?q?z_Stelmach?= Subject: [PATCH v2 RESEND 9/9] spi: spi-s3c64xx: Turn on interrupts upon resume Date: Thu, 1 Oct 2020 17:21:48 +0200 Message-Id: <20201001152148.29747-10-l.stelmach@samsung.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20201001152148.29747-1-l.stelmach@samsung.com> MIME-Version: 1.0 Organization: Samsung R&D Institute Poland X-Brightmail-Tracker: H4sIAAAAAAAAA01Sa0hTcRTnf+92dxWn1yl4ME0aFmSlWSJXE0kJWV96fQgKfEy9qORUNmcZ 5BMy36mUz/Ktw2zma04xk5WZaK5spmYLREU0InKj1ETbdpX89jvn/B7nwCFxwSDXmYxLSGak CeJ4IWHNUb3dnDx10SgPP63r86cbN1YwurOig0s/Wlgi6OLF7zit1b7g0XMaBaK7Fj9z6U8D NQRdoR3C6Mxfczz6+Rs9j24b2EbnbUQzTeu4qL9KzxN1teUSou6mdFFRTxsSGboOXyFuWgdE M/FxKYzUKzDCOnbhVTOWtEbc6X45jTLQCjcPWZFA+YChqdeErUkBpUDwczuXxxZGBPp5I84W BgR/n0ygfUn5lg5jB60I5vP3JSsIPuhVuJlFUEFQ3PzOYuxI9WFQYtByzAOckkNBv4YwYwfq KlQ3VPLMmEMdhd9LGRbMpwJgua+Wx8a5QU5rn4VvZepPlrwmWI49jFUuWTztKA9oz5rZ83eD 7N5qy95AfeFBZ1Hd3t4XoLh8E2OxA6yN9uwFuMB4WYFJTJpwOpSV+rLaAgSqmg0OyzkHXye3 CDMHp45Dx4AX2w4Cg1LDZaW2MPvDnl3BFkpV5Tjb5sOD+wKW7Q7K4sE9Q2coXFOgh0hYdeCY qgMHVP3PqkN4G3Ji5DJJDCM7k8Dc9pSJJTJ5QoxnVKKkC5l+anxn1KhGA9uRGkSRSGjDp4bl 4QKuOEWWKtEgIHGhIz/4/XiYgB8tTr3LSBPDpfJ4RqZBh0iO0Il/tmE1VEDFiJOZWwyTxEj3 pxhp5ZyBKo99e1qfdDmvcVZ3YuRIZGHajchpV4+Ua9tR8PiaMnTMbzdCvf6xoT0wcCQu44+C mbKbUrfX8rFufIbIr180XKKiMjtc8q4HSk/yJ3y9XXcdd5RZqZJsZ79nynv4jrHORx1i365r ycFWg/3D3NN8l4f6Q1oEMz4KnVY/HEQLObJYsbcHLpWJ/wGSRJquTwMAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrNIsWRmVeSWpSXmKPExsVy+t/xe7qeX0rjDa6ekLFY/OM5k8XGGetZ LaY+fMJm0f/4NbPF+fMb2C1uHlrBaLHp8TVWi8u75rBZzDi/j8mi8eNNdou1R+6yW6za9YfR gcfj+pJPzB47Z91l99i0qpPNY/OSeo++LasYPT5vkgtgi9KzKcovLUlVyMgvLrFVija0MNIz tLTQMzKx1DM0No+1MjJV0rezSUnNySxLLdK3S9DLeLh/KVPBK7aKzXuvMjYwPmftYuTkkBAw kZj+6woTiC0ksJRRYutVmy5GDqC4lMTKuekQJcISf651sXUxcgGVPGWUaF9znw0kwSbgKNG/ 9AQrSEJEYD+TxKUL91lAEswC5RKXZj1nB7GFBfwlPpy5DNbAIqAq8e1JA1icV8BG4un2+ewQ G+Ql2pdvB6vhBIqfm3iYDeKgXIndu4+yQdQLSpyc+YQF5DhmAXWJ9fOEQML8AloSa5quQ62V l2jeOpt5AqPQLCQdsxA6ZiGpWsDIvIpRJLW0ODc9t9hIrzgxt7g0L10vOT93EyMwIrcd+7ll B2PXu+BDjAIcjEo8vAIHSuOFWBPLiitzDzFKcDArifA6nT0dJ8SbklhZlVqUH19UmpNafIjR FOjNicxSosn5wGSRVxJvaGpobmFpaG5sbmxmoSTO2yFwMEZIID2xJDU7NbUgtQimj4mDU6qB 8YplQpxeTeBHttmTX7QeFfSfvy3pqYZc3qVJWT+WvD3C7aB963Gi4MrpQlXdaWGz7j2wNMni jp90d1OMbsHHM10P7zv/d/wY/u63h9JG/2Sx9k9Wzg83XTT7or717r9vTv2Snl0bXv/w7dOJ NGXvMPbw/5Ted+nruWOhDnaGXlo5WfGHFrJZKbEUZyQaajEXFScCAPKNMsPeAgAA X-CMS-MailID: 20201001152249eucas1p165b78adf542a48b38b49cb5e00500e26 X-Msg-Generator: CA X-RootMTR: 20201001152249eucas1p165b78adf542a48b38b49cb5e00500e26 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20201001152249eucas1p165b78adf542a48b38b49cb5e00500e26 References: <20200821161401.11307-1-l.stelmach@samsung.com> <20201001152148.29747-1-l.stelmach@samsung.com> Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org s3c64xx_spi_hwinit() disables interrupts. In s3c64xx_spi_probe() after calling s3c64xx_spi_hwinit() they are enabled with the following call. Reviewed-by: Krzysztof Kozlowski Signed-off-by: Łukasz Stelmach --- drivers/spi/spi-s3c64xx.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index ea5a22dec53d..53e3581bcd7b 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -1378,6 +1378,10 @@ static int s3c64xx_spi_runtime_resume(struct device *dev) s3c64xx_spi_hwinit(sdd); + writel(S3C64XX_SPI_INT_RX_OVERRUN_EN | S3C64XX_SPI_INT_RX_UNDERRUN_EN | + S3C64XX_SPI_INT_TX_OVERRUN_EN | S3C64XX_SPI_INT_TX_UNDERRUN_EN, + sdd->regs + S3C64XX_SPI_INT_EN); + return 0; err_disable_src_clk: