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misc: rp1-pio: two small fixes and support for cyclic output DMA - #7663

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hansverkuil wants to merge 7 commits into

raspberrypi:rpi-6.18.yfrom

hansverkuil:rp1-pio-tx

Commits on Oct 6, 2026

misc: rp1-pio: name the DMA direction with a tx bool
Hans Verkuil
committed
da7c63a
misc: rp1-pio: guard against unreasonable buffer allocations
Hans Verkuil
committed
b4ed90f
misc: rp1-pio: ensure >= 2 buffers are available for cyclic DMA
Hans Verkuil
committed
4a7532d
misc: rp1-pio: add RP1_PIO_CYCLIC_MIN_BUF_SIZE
Hans Verkuil
committed
38511d5
misc: rp1-pio: buf_size was overwritten, which was confusing
Hans Verkuil
committed
3e9c401
misc: rp1-pio: better handling of corner cases
Hans Verkuil
committed
5a9030c
misc: rp1-pio: add cyclic TX DMA support
Hans Verkuil
committed
75da9a3