dma: Update dma_dw from sof #43883
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dma: Update dma_dw from sof #43883
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@teburd can you please rebase? |
Adds a bit flag config option for cyclic transfer lists, where the transfer list tail may link to its head creating a never ending loop of transfer descriptors. DesignWare DMA supports such cyclic transfers. Signed-off-by: Adrian Bonislawski <adrian.bonislawski@intel.com>
Adds to the dma_status struct the number of free bytes available in the current transfer buffer. Signed-off-by: Adrian Bonislawski <adrian.bonislawski@intel.com>
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Tested in SOF by @abonislawski and with the new DAI drivers by @juimonen |
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nashif
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Mar 28, 2022
dcpleung
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Mar 28, 2022
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dcpleung
previously approved these changes
Mar 28, 2022
nashif
previously approved these changes
Mar 28, 2022
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Ports the SOF DesignWare DMA code to Zephyr. Effectively replaces much of what was the designware driver as this driver enables scatter gather which the older driver did not. * Enables cyclic transfer description lists when the cyclic config param is given. * Enables linear link position usage with cAVS GPDMA. * Passes suspend/resume, scatter/gather tests. * Provides status updates of the transfer through dma_get_status() * Enables reloading a cyclic transfer with dma_reload() * Enables dma handshakes using the dma_slot config param. * cAVS specifics remain in the dma_cavs_gpdma driver. Co-authored-by: Adrian Bonislawski <adrian.bonislawski@intel.com> Co-authored-by: Tom Burdick <thomas.burdick@intel.com> Signed-off-by: Tom Burdick <thomas.burdick@intel.com>
nashif
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Mar 29, 2022
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dcpleung
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Mar 29, 2022
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Ports the existing SOF DesignWare DMA code to Zephyr styling, calls, Kconfig setup and such.
Effectively replaces much of what was the designware driver as this
driver enables scatter gather which the older driver did not.
Passes newly updated suspend/resume and created scatter gather test cases. Works in SoF thanks to the great work from @abonislawski
Marked DNM until dependent PRs make their way in
I realize the commit sequence is maybe a little messy for some, but this was a collaborative effort and I don't wish to squash it all immediatelySigned-off-by: Tom Burdick thomas.burdick@intel.com