pm24.git/drivers/dma/dw, branch rust-6.8

dmaengine: dw: platform: Convert to platform remove callback returning void

2023-09-28T07:40:47Z

The .remove() callback for a platform driver returns an int which makes many driver authors wrongly assume it's possible to do error handling by returning an error code. However the value returned is ignored (apart from emitting a warning) and this typically results in resource leaks. To improve here there is a quest to make the remove callback return void. In the first step of this quest all drivers are converted to .remove_new() which already returns void. Eventually after all drivers are converted, .remove_new() is renamed to .remove(). Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König Acked-by: Viresh Kumar Link: https://lore.kernel.org/r/20230919133207.1400430-12-u.kleine-koenig@pengutronix.de Signed-off-by: Vinod Koul

dmaengine: Explicitly include correct DT includes

2023-08-01T18:21:27Z

The DT of_device.h and of_platform.h date back to the separate of_platform_bus_type before it as merged into the regular platform bus. As part of that merge prepping Arm DT support 13 years ago, they "temporarily" include each other. They also include platform_device.h and of.h. As a result, there's a pretty much random mix of those include files used throughout the tree. In order to detangle these headers and replace the implicit includes with struct declarations, users need to explicitly include the correct includes. Signed-off-by: Rob Herring Link: https://lore.kernel.org/r/20230718143138.1066177-1-robh@kernel.org Signed-off-by: Vinod Koul

dmaengine: dw: Move check for paused channel to dwc_get_residue()

2023-02-16T13:15:48Z

Move check for paused channel to dwc_get_residue() and rename the latter to dwc_get_residue_and_status(). This improves data integrity as residue and DMA channel status are set in the same function under the same conditions. Signed-off-by: Andy Shevchenko Link: https://lore.kernel.org/r/20230130151747.20704-1-andriy.shevchenko@linux.intel.com Signed-off-by: Vinod Koul

Merge tag 'dmaengine-6.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine

2022-08-05T01:44:38Z

Pull dmaengine updates from Vinod Koul: "New support / Core: - Remove DMA_MEMCPY_SG for lack of users - Tegra 234 dmaengine support - Mediatek MT8365 dma support - Apple ADMAC driver Updates: - Yaml conversion for ST-Ericsson DMA40 binding and Freescale edma - rz-dmac updates and device_synchronize support - Bunch of typo in comments fixes in drivers - multithread support in sf-pdma driver" * tag 'dmaengine-6.0-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine: (50 commits) dmaengine: mediatek: mtk-hsdma: Fix typo 'the the' in comment dmaengine: axi-dmac: check cache coherency register dmaengine: sh: rz-dmac: Add device_synchronize callback dmaengine: sprd: Cleanup in .remove() after pm_runtime_get_sync() failed dmaengine: tegra: Add terminate() for Tegra234 dt-bindings: dmaengine: Add compatible for Tegra234 dmaengine: xilinx: use strscpy to replace strlcpy dmaengine: imx-sdma: Add FIFO stride support for multi FIFO script dmaengine: idxd: Correct IAX operation code names dmaengine: imx-dma: Cast of_device_get_match_data() with (uintptr_t) dmaengine: dw-axi-dmac: ignore interrupt if no descriptor dmaengine: dw-axi-dmac: do not print NULL LLI during error dmaengine: altera-msgdma: Fixed some inconsistent function name descriptions dmaengine: imx-sdma: Add missing struct documentation dmaengine: sf-pdma: Add multithread support for a DMA channel dt-bindings: dma: dw-axi-dmac: extend the number of interrupts dmaengine: dmatest: use strscpy to replace strlcpy dmaengine: ste_dma40: fix typo in comment dmaengine: jz4780: fix typo in comment dmaengine: s3c24xx: fix typo in comment ...

dma:dw: remove reference to AVR32 architecture in core.c

2022-08-03T09:03:02Z

The AVR32 architecture does no longer exist in the Linux kernel, hence remove a reference to it in comments to avoid confusion. Signed-off-by: Hans-Christian Noren Egtvedt

dmaengine: dw: dmamux: Fix build without CONFIG_OF

2022-06-10T12:21:21Z

When built without OF support, of_match_node() expands to NULL, which produces the following output: >> drivers/dma/dw/rzn1-dmamux.c:105:34: warning: unused variable 'rzn1_dmac_match' [-Wunused-const-variable] static const struct of_device_id rzn1_dmac_match[] = { One way to silence the warning is to enclose the structure definition with an #ifdef CONFIG_OF/#endif block. Fixes: 134d9c52fca2 ("dmaengine: dw: dmamux: Introduce RZN1 DMA router support") Reported-by: kernel test robot Signed-off-by: Miquel Raynal Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220609141455.300879-2-miquel.raynal@bootlin.com Signed-off-by: Vinod Koul

dmaengine: dw: dmamux: Export the module device table

2022-06-10T12:21:21Z

This is a tristate driver that can be built as a module, as a result, the OF match table should be exported with MODULE_DEVICE_TABLE(). Fixes: 134d9c52fca2 ("dmaengine: dw: dmamux: Introduce RZN1 DMA router support") Signed-off-by: Miquel Raynal Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220609141455.300879-1-miquel.raynal@bootlin.com Signed-off-by: Vinod Koul

dmaengine: dw: Add RZN1 compatible

2022-05-19T17:04:51Z

The Renesas RZN1 DMA IP is very close to the original DW DMA IP, a DMA router has been introduced to handle the wiring options that have been added. Signed-off-by: Miquel Raynal Reviewed-by: Geert Uytterhoeven Acked-by: Andy Shevchenko Acked-By: Vinod Koul Link: https://lore.kernel.org/r/20220427095653.91804-8-miquel.raynal@bootlin.com Signed-off-by: Vinod Koul

dmaengine: dw: dmamux: Introduce RZN1 DMA router support

2022-05-19T17:04:51Z

The Renesas RZN1 DMA IP is based on a DW core, with eg. an additional dmamux register located in the system control area which can take up to 32 requests (16 per DMA controller). Each DMA channel can be wired to two different peripherals. We need two additional information from the 'dmas' property: the channel (bit in the dmamux register) that must be accessed and the value of the mux for this channel. Signed-off-by: Miquel Raynal Reviewed-by: Andy Shevchenko Reviewed-by: Ilpo Järvinen Link: https://lore.kernel.org/r/20220427095653.91804-6-miquel.raynal@bootlin.com Signed-off-by: Vinod Koul

dmaengine: dw: switch from 'pci_' to 'dma_' API

2021-10-26T05:24:32Z

The wrappers in include/linux/pci-dma-compat.h should go away. pci_set_dma_mask()/pci_set_consistent_dma_mask() should be replaced with dma_set_mask()/dma_set_coherent_mask(), and use dma_set_mask_and_coherent() for both. Signed-off-by: Qing Wang Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/1633663733-47199-6-git-send-email-wangqing@vivo.com Signed-off-by: Vinod Koul