From: Vinod Koul Date: Mon, 9 Nov 2020 08:54:49 +0000 (+0530) Subject: dmaengine: add peripheral configuration X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=e7bbb7acabf4;p=linux.git 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 --- diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h index dd357a747780f..493a047ed0a24 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; }; /**