| Message ID | 20180524070703.11901-11-robert.jarzmik@free.fr |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | ARM: pxa: switch to DMA slave maps | expand |
On 24-05-18, 09:07, Robert Jarzmik wrote: > Add some documentation for the pxad_param structure, and describe the > contract behind the minimal required priority of a DMA channel. Acked-by: Vinod Koul <vkoul@kernel.org>
diff --git a/include/linux/dma/pxa-dma.h b/include/linux/dma/pxa-dma.h index e56ec7af4fd7..9fc594f69eff 100644 --- a/include/linux/dma/pxa-dma.h +++ b/include/linux/dma/pxa-dma.h @@ -9,6 +9,15 @@ enum pxad_chan_prio { PXAD_PRIO_LOWEST, }; +/** + * struct pxad_param - dma channel request parameters + * @drcmr: requestor line number + * @prio: minimal mandatory priority of the channel + * + * If a requested channel is granted, its priority will be at least @prio, + * ie. if PXAD_PRIO_LOW is required, the requested channel will be either + * PXAD_PRIO_LOW, PXAD_PRIO_NORMAL or PXAD_PRIO_HIGHEST. + */ struct pxad_param { unsigned int drcmr; enum pxad_chan_prio prio;
Add some documentation for the pxad_param structure, and describe the contract behind the minimal required priority of a DMA channel. Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> --- include/linux/dma/pxa-dma.h | 9 +++++++++ 1 file changed, 9 insertions(+)