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Thu, 16 Oct 2025 08:46:30 -0700 (PDT) Received: from NB-6746.corp.yadro.com ([188.243.183.84]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-63c12279a54sm1237989a12.11.2025.10.16.08.46.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 16 Oct 2025 08:46:30 -0700 (PDT) From: Artem Shimko To: Vinod Koul , Philipp Zabel Cc: Eugeniy.Paltsev@synopsys.com, Artem Shimko , linux-kernel@vger.kernel.org, dmaengine@vger.kernel.org Subject: [PATCH v3 0/2] dmaengine: dw-axi-dmac: PM cleanup and reset control support Date: Thu, 16 Oct 2025 18:46:24 +0300 Message-ID: <20251016154627.175796-1-a.shimko.dev@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Hello maintainers and reviewers, This patch series improves the dw-axi-dmac driver in two areas: Patch 1 simplifies the power management code by using modern kernel macros and removing redundant wrapper functions, making the code more maintainable and aligned with current kernel practices. Patch 2 adds proper reset control support to ensure reliable initialization and power management, handling resets during probe, remove, and suspend/resume operations. For debugging, I used dev_info from the suspend/resume functions. Before pushing, I removed dev_info from the driver. Suspend: echo 0 > /sys/module/printk/parameters/console_suspend echo mem > /sys/power/state ... [ 195.339311] dw_axi_dmac_platform 100NDA00.NDA-axi-dma: drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c axi_dma_suspend [ 195.350274] dw_axi_dmac_platform 100NDA00.NDA-axi-dma: drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c axi_dma_suspend [ 195.361223] dw_axi_dmac_platform 100NDA00.NDA-axi-dma: drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c axi_dma_suspend ... Resume: ... [ 200.669945] dw_axi_dmac_platform 100NDA00.NDA-axi-dma: drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c axi_dma_resume [ 200.680975] dw_axi_dmac_platform 100NDA00.NDA-axi-dma: drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c axi_dma_resume [ 200.692108] dw_axi_dmac_platform 100NDA00.NDA-axi-dma: drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c axi_dma_resume ... Best regards, Artem Shimko ChangeLog: v1: * https://lore.kernel.org/all/20251012100002.2959213-1-a.shimko.dev@gmail.com/T/#t v2: * https://lore.kernel.org/all/20251013150234.3200627-1-a.shimko.dev@gmail.com/T/#u v3: * add reset_control_deassert() to dw_remove() to have access to registers in case if reset has been asserted via suspend Artem Shimko (2): dmaengine: dw-axi-dmac: simplify PM functions and use modern macros dmaengine: dw-axi-dmac: add reset control support .../dma/dw-axi-dmac/dw-axi-dmac-platform.c | 73 +++++++++---------- drivers/dma/dw-axi-dmac/dw-axi-dmac.h | 1 + 2 files changed, 36 insertions(+), 38 deletions(-) -- 2.43.0