{"id":809423,"url":"http://patchwork.ozlabs.org/api/1.0/patches/809423/?format=json","project":{"id":19,"url":"http://patchwork.ozlabs.org/api/1.0/projects/19/?format=json","name":"Linux IMX development","link_name":"linux-imx","list_id":"linux-imx-kernel.lists.patchwork.ozlabs.org","list_email":"linux-imx-kernel@lists.patchwork.ozlabs.org","web_url":null,"scm_url":null,"webscm_url":null},"msgid":"<20170903224100.17893-5-stefan.bruens@rwth-aachen.de>","date":"2017-09-03T22:40:55","name":"[04/10] dmaengine: sun6i: Enable additional burst lengths/widths on H3","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"c3db52c531b50fee0d8f8516c15f3932fd2648c1","submitter":{"id":67055,"url":"http://patchwork.ozlabs.org/api/1.0/people/67055/?format=json","name":"Stefan Brüns","email":"stefan.bruens@rwth-aachen.de"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linux-imx/patch/20170903224100.17893-5-stefan.bruens@rwth-aachen.de/mbox/","series":[{"id":1284,"url":"http://patchwork.ozlabs.org/api/1.0/series/1284/?format=json","date":"2017-09-03T22:40:55","name":"dmaengine: sun6i: Fixes for H3/A83T, enable A64","version":1,"mbox":"http://patchwork.ozlabs.org/series/1284/mbox/"}],"check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/809423/checks/","tags":{},"headers":{"Return-Path":"","X-Original-To":"incoming-imx@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming-imx@bilbo.ozlabs.org","Authentication-Results":["ozlabs.org;\n\tspf=none (mailfrom) smtp.mailfrom=lists.infradead.org\n\t(client-ip=65.50.211.133; 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d=\"scan'208\";a=\"11607788\"","From":"=?utf-8?q?Stefan_Br=C3=BCns?= ","To":"","Subject":"[PATCH 04/10] dmaengine: sun6i: Enable additional burst\n\tlengths/widths on H3","Date":"Mon, 4 Sep 2017 00:40:55 +0200","Message-ID":"<20170903224100.17893-5-stefan.bruens@rwth-aachen.de>","X-Mailer":"git-send-email 2.14.1","In-Reply-To":"<20170903224100.17893-1-stefan.bruens@rwth-aachen.de>","References":"<20170903224100.17893-1-stefan.bruens@rwth-aachen.de>","MIME-Version":"1.0","X-Originating-IP":"[92.225.242.208]","X-ClientProxiedBy":"rwthex-w1-b.rwth-ad.de (2002:8682:1a9d::8682:1a9d) To\n\trwthex-w2-b.rwth-ad.de (2002:8682:1a9f::8682:1a9f)","X-CRM114-Version":"20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 ","X-CRM114-CacheID":"sfid-20170903_154139_897574_D201F23B ","X-CRM114-Status":"UNSURE ( 9.46 )","X-CRM114-Notice":"Please train this message.","X-Spam-Score":"-4.2 (----)","X-Spam-Report":"SpamAssassin version 3.4.1 on bombadil.infradead.org summary:\n\tContent analysis details: (-4.2 points)\n\tpts rule name description\n\t---- ----------------------\n\t--------------------------------------------------\n\t-2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at http://www.dnswl.org/,\n\tmedium trust [134.130.5.47 listed in list.dnswl.org]\n\t-0.0 RP_MATCHES_RCVD Envelope sender domain matches handover relay\n\tdomain\n\t-1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1%\n\t[score: 0.0000]","X-BeenThere":"linux-arm-kernel@lists.infradead.org","X-Mailman-Version":"2.1.21","Precedence":"list","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","Cc":"devicetree@vger.kernel.org, Vinod Koul ,\n\tAndre Przywara , linux-kernel@vger.kernel.org,\n\tCode Kipper , Chen-Yu Tsai ,\n\tRob Herring , dmaengine@vger.kernel.org,\n\tMaxime Ripard ,\n\tlinux-arm-kernel@lists.infradead.org","Content-Type":"text/plain; charset=\"utf-8\"","Content-Transfer-Encoding":"base64","Sender":"\"linux-arm-kernel\" ","Errors-To":"linux-arm-kernel-bounces+incoming-imx=patchwork.ozlabs.org@lists.infradead.org","List-Id":"linux-imx-kernel.lists.patchwork.ozlabs.org"},"content":"The H3 supports bursts lengths of 1, 4, 8 and 16 transfers, each with\na width of 1, 2, 4 or 8 bytes.\n\nThe register value for the the width is log2-encoded, change the\nconversion function to provide the correct value for width == 8.\n\nSigned-off-by: Stefan Brüns \n---\n drivers/dma/sun6i-dma.c | 12 +++++++++++-\n 1 file changed, 11 insertions(+), 1 deletion(-)","diff":"diff --git a/drivers/dma/sun6i-dma.c b/drivers/dma/sun6i-dma.c\nindex c5644bd0f91a..335a8ec88b0b 100644\n--- a/drivers/dma/sun6i-dma.c\n+++ b/drivers/dma/sun6i-dma.c\n@@ -263,8 +263,12 @@ static inline s8 convert_burst(u32 maxburst)\n \tswitch (maxburst) {\n \tcase 1:\n \t\treturn 0;\n+\tcase 4:\n+\t\treturn 1;\n \tcase 8:\n \t\treturn 2;\n+\tcase 16:\n+\t\treturn 3;\n \tdefault:\n \t\treturn -EINVAL;\n \t}\n@@ -272,7 +276,7 @@ static inline s8 convert_burst(u32 maxburst)\n \n static inline s8 convert_buswidth(enum dma_slave_buswidth addr_width)\n {\n-\treturn addr_width >> 1;\n+\treturn ilog2(addr_width);\n }\n \n static size_t sun6i_get_chan_size(struct sun6i_pchan *pchan)\n@@ -1152,6 +1156,12 @@ static int sun6i_dma_probe(struct platform_device *pdev)\n \t\t\t\t\t\t BIT(DMA_SLAVE_BUSWIDTH_4_BYTES);\n \tsdc->src_burst_lengths\t\t\t= BIT(1) | BIT(8);\n \tsdc->dst_burst_lengths\t\t\t= BIT(1) | BIT(8);\n+\tif (sdc->cfg->dmac_variant == DMAC_VARIANT_H3) {\n+\t\tsdc->slave.src_addr_widths |= BIT(DMA_SLAVE_BUSWIDTH_8_BYTES);\n+\t\tsdc->slave.dst_addr_widths |= BIT(DMA_SLAVE_BUSWIDTH_8_BYTES);\n+\t\tsdc->src_burst_lengths |= BIT(4) | BIT(16);\n+\t\tsdc->dst_burst_lengths |= BIT(4) | BIT(16);\n+\t}\n \tsdc->slave.directions\t\t\t= BIT(DMA_DEV_TO_MEM) |\n \t\t\t\t\t\t BIT(DMA_MEM_TO_DEV);\n \tsdc->slave.residue_granularity\t\t= DMA_RESIDUE_GRANULARITY_BURST;\n","prefixes":["04/10"]}