- 01 Feb, 2021 23 commits
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Sia Jee Heng authored
AxiDMA driver exposed the dma_set_max_seg_size() to the DMAENGINE. It shall helps the DMA clients to create size-optimized linked-list for the controller. However, there are certain situations where DMA client might not be abled to benefit from the dma_get_max_seg_size() if the segment size can't meet the nature of the DMA client's operation. In the case of ALSA operation, ALSA application and driver expecting to run in a period of larger than 10ms regardless of the bit depth. With this large period, there is a strong request to split the linked-list in the AxiDMA driver. Signed-off-by:
Sia Jee Heng <jee.heng.sia@intel.com> Tested-by:
Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com> Reviewed-by:
Vinod Koul <vkoul@kernel.org>
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Sia Jee Heng authored
Add support for DMA Scatter-Gather (SG) constraint so that DMA clients can handle the AxiDMA limitation. Without supporting DMA constraint the default Max segment size reported by dmaengine is 64KB, which is not supported by Intel KeemBay AxiDMA. Signed-off-by:
Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by:
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Sia Jee Heng authored
Add support for Intel KeemBay AxiDMA BYTE and HALFWORD registers programming. Intel KeemBay AxiDMA supports data transfer between device to memory and memory to device operations. This code is needed by I2C, I3C, I2S, SPI and UART which uses FIFO size of 8bits and 16bits to perform memory to device data transfer operation. 0-padding functionality is provided to avoid pre-processing of data on CPU. Signed-off-by:
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Sia Jee Heng authored
Add support for Intel KeemBay AxiDMA device handshake programming. Device handshake number passed in to the AxiDMA shall be written to the Intel KeemBay AxiDMA hardware handshake registers before DMA operations are started. Signed-off-by:
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Sia Jee Heng authored
Add support for Intel KeemBay AxiDMA to the .compatible field. The AxiDMA Apb region will be accessible if the compatible string matches the "intel,kmb-axi-dma". Signed-off-by:
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Sia Jee Heng authored
If HAS_IOMEM is not defined and DW_AXI_DMAC is enabled under COMPILE_TEST, the build fails with the following error: dw-axi-dmac-platform.c:(.text+0xc4): undefined reference to `devm_ioremap_resource' Link: https://www.spinics.net/lists/dmaengine/msg25188.htmlReported-by:
kernel test robot <lkp@intel.com> Signed-off-by:
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Sia Jee Heng authored
Add support for Intel KeemBay DMA registers. These registers are required to run data transfer between device to memory and memory to device on Intel KeemBay SoC. Signed-off-by:
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Sia Jee Heng authored
Add support for Intel KeemBay AxiDMA to the dw-axi-dmac Schemas DT binding. Signed-off-by:
Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20210125013255.25799-11-jee.heng.sia@intel.comSigned-off-by:
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Sia Jee Heng authored
Add support for DMA_RESIDUE_GRANULARITY_BURST so that AxiDMA can report DMA residue. Existing AxiDMA driver only support data transfer between memory to memory operation, therefore reporting DMA residue to the DMA clients is not supported. Reporting DMA residue to the DMA clients is important as DMA clients shall invoke dmaengine_tx_status() to understand the number of bytes been transferred so that the buffer pointer can be updated accordingly. Signed-off-by:
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Sia Jee Heng authored
Add support for of_dma_controller_register() so that DMA clients can pass in device handshake number to the AxiDMA driver. DMA clients shall code the device handshake number in the Device tree. When DMA activities are needed, DMA clients shall invoke OF helper function to pass in the device handshake number to the AxiDMA. Without register to the of_dma_controller_register(), data transfer between memory to device and device to memory operations would failed. Signed-off-by:
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Sia Jee Heng authored
Add support for device_prep_dma_cyclic() callback function to benefit DMA cyclic client, for example ALSA. Existing AxiDMA driver only support data transfer between memory to memory. Data transfer between device to memory and memory to device in cyclic mode would failed if this interface is not supported by the AxiDMA driver. Signed-off-by:
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Sia Jee Heng authored
Add device_prep_slave_sg() callback function so that DMA_MEM_TO_DEV and DMA_DEV_TO_MEM operations in single mode can be supported. Existing AxiDMA driver only support data transfer between memory to memory. Data transfer between device to memory and memory to device in single mode would failed if this interface is not supported by the AxiDMA driver. Signed-off-by:
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Sia Jee Heng authored
Add device_config() callback function so that the device address can be passed to the dma driver. DMA clients use this interface to pass in the device address to the AxiDMA. Without this interface, data transfer between device to memory and memory to device would failed. Signed-off-by:
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Sia Jee Heng authored
Add support for device_synchronize() callback function to sync with dmaengine_terminate_sync(). Signed-off-by:
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Sia Jee Heng authored
The DMA memory block is created at driver load time and exist for device lifetime. Move the dma_pool_create() to the ->chan_resource() callback function allowing the DMA memory blocks to be created as needed and destroyed when the channel is freed. Signed-off-by:
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Sia Jee Heng authored
Simplify and refactor the descriptor management by removing the redundant Linked List Item (LLI) queue control logic from the AxiDMA driver. The descriptor is split into virtual descriptor and hardware LLI so that only hardware LLI memories are allocated from the DMA memory pool. Up to 64 descriptors can be allocated within a PAGE_SIZE compare to 16 descriptors in previous version. This solves the problem where an ALSA driver expects more than 16 DMA descriptors to run. Signed-off-by:
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Sia Jee Heng authored
YAML schemas Device Tree (DT) binding is the new format for DT to replace the old format. Introduce YAML schemas DT binding for dw-axi-dmac and remove the old version. Signed-off-by:
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Grygorii Strashko authored
Optimize struct psil_endpoint_config for size by - reordering fields - grouping bitfields - change mapped_channel_id type to s16 (32K channel is enough) - default_flow_id type to s16 as it's assigned to -1 before: text data bss dec hex filename 12654100 5211472 666904 18532476 11ac87c vmlinux after: 12654100 5208528 666904 18529532 11abcfc vmlinux diff: 2944 bytes Signed-off-by:
Grygorii Strashko <grygorii.strashko@ti.com> Link: https://lore.kernel.org/r/20210129193117.28833-1-grygorii.strashko@ti.comSigned-off-by:
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Geert Uytterhoeven authored
The Intel Lightning Mountain (LGM) DMA controller is only present on Intel Lightning Mountain SoCs. Hence add a dependency on X86, to prevent asking the user about this driver when configuring a kernel without Intel Lightning Mountain platform support. While at it, fix a misspelling of "Intel". Fixes: 32d31c79 ("dmaengine: Add Intel LGM SoC DMA support.") Signed-off-by:
Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20210129131702.2656060-1-geert+renesas@glider.beSigned-off-by:
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Geert Uytterhoeven authored
The DMACs (both SYS-DMAC and RT-DMAC) on R-Car V3U differ slightly from the DMACs on R-Car Gen2 and other R-Car Gen3 SoCs: 1. The per-channel registers are located in a second register block. Add support for mapping the second block, using the appropriate offsets and stride. 2. The common Channel Clear Register (DMACHCLR) was replaced by a per-channel register. Update rcar_dmac_chan_clear{,_all}() to handle this. As rcar_dmac_init() needs to clear the status before the individual channels are probed, channel index and base address initialization are moved forward. Inspired by a patch in the BSP by Phong Hoang <phong.hoang.wz@renesas.com>. Signed-off-by:Wolfram Sang <wsa+renesas@sang-engineering.com> Tested-by:
Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Reviewed-by:
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Geert Uytterhoeven authored
Extract the code to clear the status of one or all channels into their own helpers, to prepare for the different handling of the R-Car V3U SoC. Signed-off-by:
Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by:
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Geert Uytterhoeven authored
Add a helper macro for iterating over all DMAC channels, taking into account the channel mask. Use it where appropriate, to simplify code. Restore "reverse Christmas tree" order of local variables while adding a new variable. Signed-off-by:
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Geert Uytterhoeven authored
Document the compatible value for the Direct Memory Access Controller blocks in the Renesas R-Car V3U (R8A779A0) SoC. The most visible difference with DMAC blocks on other R-Car SoCs is the move of the per-channel registers to a separate register block. Signed-off-by:
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- 27 Jan, 2021 2 commits
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Bjorn Helgaas authored
Fix misspelling of "physical". Signed-off-by:
Bjorn Helgaas <bhelgaas@google.com> Link: https://lore.kernel.org/r/20210126205906.2918099-1-helgaas@kernel.orgSigned-off-by:
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Thara Gopinath authored
When bam dma is "controlled remotely", thus far clocks were not controlled from the Linux. In this scenario, Linux was disabling runtime pm in bam dma driver and not doing any clock management in suspend/resume hooks. With introduction of crypto engine bam dma, the clock is a rpmh resource that can be controlled from both Linux and TZ/remote side. Now bam dma clock is getting enabled during probe even though the bam dma can be "controlled remotely". But due to clocks not being handled properly, bam_suspend generates a unbalanced clk_unprepare warning during system suspend. To fix the above issue and to enable proper clock-management, this patch enables runtim-pm and handles bam dma clocks in suspend/resume hooks if the clock node is present irrespective of controlled_remotely property. Signed-off-by:
Thara Gopinath <thara.gopinath@linaro.org> Reviewed-by:
Bjorn Andersson <bjorn.andersson@linaro.org> Tested-by:
John Stultz <john.stultz@linaro.org> Reviewed-by:
Shawn Guo <shawn.guo@linaro.org> Link: https://lore.kernel.org/r/20210126211859.790892-1-thara.gopinath@linaro.orgSigned-off-by:
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- 26 Jan, 2021 14 commits
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Dave Jiang authored
Add a module parameter that overrides the SVA feature enabling. This keeps the driver in legacy mode even when intel_iommu=sm_on is set. In this mode, the descriptor fields must be programmed with dma_addr_t from the Linux DMA API for source, destination, and completion descriptors. Signed-off-by:
Dave Jiang <dave.jiang@intel.com> Link: https://lore.kernel.org/r/161134110457.4005461.13171197785259115852.stgit@djiang5-desk3.ch.intel.comSigned-off-by:
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Lubomir Rintel authored
There is no reason the Marvell MMP two-channel audio DMA driver would have to be built-in. Signed-off-by:
Lubomir Rintel <lkundrak@v3.sk> Link: https://lore.kernel.org/r/20210121110356.1768635-4-lkundrak@v3.skSigned-off-by:
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Lubomir Rintel authored
There is no reason the Marvell MMP peripheral DMA driver would have to be built-in. Signed-off-by:
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Lubomir Rintel authored
It's not used anywhere -- drop it. Signed-off-by:
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Arnd Bergmann authored
The ST-Ericsson U300 platform is getting removed, so this driver is no longer needed. Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Reviewed-by:
Linus Walleij <linus.walleij@linaro.org> Cc: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20210120131859.2056308-4-arnd@kernel.orgSigned-off-by:
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Arnd Bergmann authored
The zte zx platform is getting removed, so this driver is no longer needed. Signed-off-by:
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Arnd Bergmann authored
The CSR SiRF prima2/atlas platforms are getting removed, so this driver is no longer needed. Signed-off-by:
Barry Song <baohua@kernel.org> Cc: Barry Song <baohua@kernel.org> Link: https://lore.kernel.org/r/20210120131859.2056308-2-arnd@kernel.orgSigned-off-by:
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Bjorn Andersson authored
The $ref for "intel,dma-poll-cnt" is missing an '/', causing dt_binding_check to fail. Fix this. Fixes: afd4df85 ("dt-bindings: dma: Add bindings for Intel LGM SoC") Signed-off-by:
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Vinod Koul authored
[1] mentions the IOAT entry contains dmaengine subsystem file. So update the entry and remove the dmaengine files 1: https://lwn.net/Articles/842415/ Link: https://lore.kernel.org/r/20210117070229.2537866-1-vkoul@kernel.orgSigned-off-by:
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Vinod Koul authored
Somehow dmaengine header files are missed in the entry so update it Link: https://lore.kernel.org/r/20210117070804.2539698-1-vkoul@kernel.orgSigned-off-by:
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Paul Cercueil authored
Add support for the JZ4760 and JZ4760B SoCs. Both SoCs have only 5 DMA channels per chip. The JZ4760B introduced the DCKES/DCKEC registers. Signed-off-by:
Paul Cercueil <paul@crapouillou.net> Link: https://lore.kernel.org/r/20210120105322.16116-2-paul@crapouillou.netSigned-off-by:
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Paul Cercueil authored
Add ingenic,jz4760-dma and ingenic,jz4760b-dma compatible strings to support the DMA engines present in the JZ4760 and JZ4760B SoCs. Signed-off-by:
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Fabio Estevam authored
Use of_device_get_match_data() to make the code simpler. Signed-off-by:
Fabio Estevam <festevam@gmail.com> Link: https://lore.kernel.org/r/20210118121549.1625217-2-festevam@gmail.comSigned-off-by:
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Fabio Estevam authored
Since 5.10-rc1, i.MX has been converted to a devicetree-only platform. The platform data support in this driver was only used for non-DT platforms. Remove the platform data support as it has no more users. Signed-off-by:
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- 17 Jan, 2021 1 commit
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Dave Jiang authored
Add DMA_PRIVATE attribute flag to idxd DMA channels. The dedicated WQs are expected to be used by a single client and not shared. While doing NTB testing this mistake was discovered, which prevented ntb_transport from requesting DSA wqs as DMA channels via dma_request_channel(). Reported-by:
Srinijia Kambham <srinija.kambham@intel.com> Signed-off-by:
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