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bh=475zu7r4GSDH4bCdvfnE1q0yMJCUwMj3yvNxH13Y90Y=; b=dk5f5QaSUD/JBpqWuY4d9wxJvxaOglRK6bxgoMRhk9MG1RF8SoIThYg7b0IrkIKBjw oQ4HOFqNYE3MphPWvQAFCgdzkP4Bhm3nVFpkogiW+4iZveCwkoBzI8HNih/7wnjttRoL Xc420BOpACNVAqe97NbVEWjgcOAg93ItNIA+B+vwuyU/889c9dHytVO3/06uuxfygfI+ Ebo/3hIyt9YrE1t9GIMy+8ijfrgfLpPdlC1BtOBpyDKohcFeermFclaxiC2DZe33x+re R706yLhJVQxUvSoCV9pGmNEhcRjdPFZ+wfbRapfyZYpv0CY2fp6dGuTmuINczQecjYgA ALWA== X-Gm-Message-State: AAQBX9chhelZutx/e9gM8bXEVIqW7bLplHeUrNVZYUILL17c49SWjdzO NQGsGeHSSWhMQy79xusGycduJjRhFtLCGw== X-Received: from joychakr.c.googlers.com ([fda3:e722:ac3:cc00:4f:4b78:c0a8:6ea]) (user=joychakr job=sendgmr) by 2002:a25:748b:0:b0:b8f:567f:4352 with SMTP id p133-20020a25748b000000b00b8f567f4352mr10863386ybc.3.1681795748077; Mon, 17 Apr 2023 22:29:08 -0700 (PDT) Date: Tue, 18 Apr 2023 05:28:57 +0000 Mime-Version: 1.0 X-Mailer: git-send-email 2.40.0.634.g4ca3ef3211-goog Message-ID: <20230418052902.1336866-1-joychakr@google.com> Subject: [PATCH v7 0/5] spi: dw: DW SPI DMA Driver updates From: Joy Chakraborty To: Serge Semin , Mark Brown , Andy Shevchenko Cc: linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org, manugautam@google.com, rohitner@google.com, Joy Chakraborty X-Spam-Status: No, score=-9.6 required=5.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE,USER_IN_DEF_DKIM_WL autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1763491545641648756?= X-GMAIL-MSGID: =?utf-8?q?1763491545641648756?= This Patch series adds support for 32 bits per word trasfers using DMA and some defensive checks around dma controller capabilities. --- V1 Changes : Add support for AxSize=4 bytes to support 32bits/word. --- V1->V2 Changes : Add dma capability check to make sure address widths are supported. --- V2->V3 Changes : Split changes , add DMA direction check and other cosmetic chnages. --- V3->V4 Changes : Fix Sparce Warning | Reported-by: kernel test robot | Link: https://lore.kernel.org/oe-kbuild-all/202303270715.w9sMJhIh-lkp@intel.com/ --- V4->V5 Changes : Preserve reverse xmas Tree order, move direction check before initalisation of further capabilities, remove zero initialisations, remove error OR'ing. --- V5->V6 Changes : -Remove case of n_bytes=3 using 4_bytes buswidth -Avoid forward decaration -Break capability check patch into 2 -round n_bytes to power of 2 ( Bug Fix) -Add more explanation in commit text. --- V6->V7 Changes : Remove extra spaces, refer to functions in commit as func() --- Joy Chakraborty (5): spi: dw: Add 32 bpw support to SPI DW DMA driver spi: dw: Move dw_spi_can_dma() spi: dw: Add DMA directional capability check spi: dw: Add DMA address widths capability check spi: dw: Round of n_bytes to power of 2 drivers/spi/spi-dw-core.c | 2 +- drivers/spi/spi-dw-dma.c | 75 +++++++++++++++++++++++++++++---------- drivers/spi/spi-dw.h | 1 + 3 files changed, 59 insertions(+), 19 deletions(-)