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| author | Vinod Koul <vkoul@kernel.org> | 2020-11-09 14:24:49 +0530 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2020-11-24 21:42:04 +0530 |
| commit | e7bbb7acabf47d74672e0e314bed4d452d2097b4 (patch) | |
| tree | 0837f935cda2ac42a6bc6ac10cc53fbd9a3c6ef6 /include/linux/dmaengine.h | |
| parent | 678198f21135b0aaf9782049d0a6bbbeefff1804 (diff) | |
| download | lwn-e7bbb7acabf47d74672e0e314bed4d452d2097b4.tar.gz lwn-e7bbb7acabf47d74672e0e314bed4d452d2097b4.zip | |
dmaengine: add peripheral configuration
Some complex dmaengine controllers have capability to program the
peripheral device, so pass on the peripheral configuration as part of
dma_slave_config
Link: https://lore.kernel.org/r/20201109085450.24843-3-vkoul@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'include/linux/dmaengine.h')
| -rw-r--r-- | include/linux/dmaengine.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index dd357a747780..493a047ed0a2 100644 --- a/include/linux/dmaengine.h +++ b/include/linux/dmaengine.h @@ -418,6 +418,9 @@ enum dma_slave_buswidth { * @slave_id: Slave requester id. Only valid for slave channels. The dma * slave peripheral will have unique id as dma requester which need to be * pass as slave config. + * @peripheral_config: peripheral configuration for programming peripheral + * for dmaengine transfer + * @peripheral_size: peripheral configuration buffer size * * This struct is passed in as configuration data to a DMA engine * in order to set up a certain channel for DMA transport at runtime. @@ -443,6 +446,8 @@ struct dma_slave_config { u32 dst_port_window_size; bool device_fc; unsigned int slave_id; + void *peripheral_config; + size_t peripheral_size; }; /** |