kernel/git/stable/linux.git/drivers/dma/dw, branch linux-5.19.y

dmaengine: dw: dmamux: Fix build without CONFIG_OF

2022-08-17T13:15:05+00:00

[ Upstream commit 7811f2e7fd6a30d96eaa1fccf57b07694a8cad27 ] 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 Signed-off-by: Sasha Levin

dmaengine: dw: dmamux: Export the module device table

2022-08-17T13:15:05+00:00

[ Upstream commit 2717d33841957a0f5fb65fd8b37f9c2321593864 ] 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 Signed-off-by: Sasha Levin

dmaengine: dw: Add RZN1 compatible

2022-05-19T17:04:51+00:00

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

2022-05-19T17:04:51+00:00

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

2021-10-26T05:24:32+00:00

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

dmaengine: dw: Simplify DT property parser

2021-08-06T13:48:59+00:00

Since we converted internal data types to match DT, there is no need to have an intermediate conversion layer, hence drop a few conditionals and for loops for good. Signed-off-by: Andy Shevchenko Reviewed-by: Serge Semin Tested-by: Serge Semin Link: https://lore.kernel.org/r/20210802184355.49879-3-andriy.shevchenko@linux.intel.com Signed-off-by: Vinod Koul

dmaengine: dw: Remove error message from DT parsing code

2021-08-06T13:47:46+00:00

Users are a bit frightened of the harmless message that tells that DT is missed on ACPI-based platforms. Remove it for good, it will simplify the future conversion to fwnode and device property APIs. Fixes: a9ddb575d6d6 ("dmaengine: dw_dmac: Enhance device tree support") Depends-on: f5e84eae7956 ("dmaengine: dw: platform: Split OF helpers to separate module") BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=199379 Signed-off-by: Andy Shevchenko Reviewed-by: Serge Semin Tested-by: Serge Semin Link: https://lore.kernel.org/r/20210802184355.49879-1-andriy.shevchenko@linux.intel.com Signed-off-by: Vinod Koul

dmaengine: dw: Program xBAR hardware for Elkhart Lake

2021-07-14T04:46:30+00:00

Intel Elkhart Lake PSE DMA implementation is integrated with crossbar IP in order to serve more hardware than there are DMA request lines available. Due to this, program xBAR hardware to make flexible support of PSE peripheral. The Device-to-Device has not been tested and it's not supported by DMA Engine, but it's left in the code for the sake of documenting hardware features. Signed-off-by: Andy Shevchenko Link: https://lore.kernel.org/r/20210712113940.42753-1-andriy.shevchenko@linux.intel.com Signed-off-by: Vinod Koul

dmaengine: dw: Make it dependent to HAS_IOMEM

2021-04-12T09:24:45+00:00

Some architectures do not provide devm_*() APIs. Hence make the driver dependent on HAVE_IOMEM. Fixes: dbde5c2934d1 ("dw_dmac: use devm_* functions to simplify code") Reported-by: kernel test robot Signed-off-by: Andy Shevchenko Acked-by: Viresh Kumar Link: https://lore.kernel.org/r/20210324141757.24710-1-andriy.shevchenko@linux.intel.com Signed-off-by: Vinod Koul

dmaengine dw: Revert "dmaengine: dw: Enable runtime PM"

2021-02-08T12:06:12+00:00

This reverts commit 842067940a3e3fc008a60fee388e000219b32632. For some solutions e.g. sound/soc/intel/catpt, DW DMA is part of a compound device (in that very example, domains: ADSP, SSP0, SSP1, DMA0 and DMA1 are part of a single entity) rather than being a standalone one. Driver for said device may enlist DMA to transfer data during suspend or resume sequences. Manipulating RPM explicitly in dw's DMA request and release channel functions causes suspend() to also invoke resume() for the exact same device. Similar situation occurs for resume() sequence. Effectively renders device dysfunctional after first suspend() attempt. Revert the change to address the problem. Fixes: 842067940a3e ("dmaengine: dw: Enable runtime PM") Cc: Andy Shevchenko Signed-off-by: Cezary Rojewski Acked-by: Andy Shevchenko Link: https://lore.kernel.org/r/20210203191924.15706-1-cezary.rojewski@intel.com Signed-off-by: Vinod Koul