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Tue, 09 May 2023 01:22:50 -0700 (PDT) Date: Tue, 9 May 2023 08:22:39 +0000 Mime-Version: 1.0 X-Mailer: git-send-email 2.40.1.521.gf1e218fcd8-goog Message-ID: <20230509082244.1069623-1-joychakr@google.com> Subject: [PATCH v10 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 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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=3D4 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@int= el.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=3D3 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() --- V7->V8 Changes : Minor commment updates in patch 4/5 --- V8->V9 Changes : Minor formatting changes in patch 5/5 --- V9->V10 Changes : Moving "return 0" at the end of dw_spi_dma_caps_init() fr= om patch [4/5] to patch [3/5] to solve : spi-dw-dma.c: In function =E2=80=98dw_spi_dma_caps_init=E2=80=99: spi-dw-dma.c:100:1: control reaches end of non-void function [-Werror=3Dret= urn-type] --- 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 | 5 ++- drivers/spi/spi-dw-dma.c | 76 +++++++++++++++++++++++++++++---------- drivers/spi/spi-dw.h | 1 + 3 files changed, 63 insertions(+), 19 deletions(-) --=20 2.40.1.521.gf1e218fcd8-goog