diff options
Diffstat (limited to 'drivers/dma/xilinx/xilinx_dpdma.c')
| -rw-r--r-- | drivers/dma/xilinx/xilinx_dpdma.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/drivers/dma/xilinx/xilinx_dpdma.c b/drivers/dma/xilinx/xilinx_dpdma.c index ce5c66e6897d..b0f4948b00a5 100644 --- a/drivers/dma/xilinx/xilinx_dpdma.c +++ b/drivers/dma/xilinx/xilinx_dpdma.c @@ -12,6 +12,7 @@ #include <linux/clk.h> #include <linux/debugfs.h> #include <linux/delay.h> +#include <linux/dma/xilinx_dpdma.h> #include <linux/dmaengine.h> #include <linux/dmapool.h> #include <linux/interrupt.h> @@ -1273,6 +1274,7 @@ static int xilinx_dpdma_config(struct dma_chan *dchan, struct dma_slave_config *config) { struct xilinx_dpdma_chan *chan = to_xilinx_chan(dchan); + struct xilinx_dpdma_peripheral_config *pconfig; unsigned long flags; /* @@ -1282,15 +1284,18 @@ static int xilinx_dpdma_config(struct dma_chan *dchan, * fixed both on the DPDMA side and on the DP controller side. */ - spin_lock_irqsave(&chan->lock, flags); - /* - * Abuse the slave_id to indicate that the channel is part of a video - * group. + * Use the peripheral_config to indicate that the channel is part + * of a video group. This requires matching use of the custom + * structure in each driver. */ - if (chan->id <= ZYNQMP_DPDMA_VIDEO2) - chan->video_group = config->slave_id != 0; + pconfig = config->peripheral_config; + if (WARN_ON(pconfig && config->peripheral_size != sizeof(*pconfig))) + return -EINVAL; + spin_lock_irqsave(&chan->lock, flags); + if (chan->id <= ZYNQMP_DPDMA_VIDEO2 && pconfig) + chan->video_group = pconfig->video_group; spin_unlock_irqrestore(&chan->lock, flags); return 0; |