patrick/zephyr
1
0
Fork 0
Code Issues Pull requests Actions 8 Packages Projects Releases Wiki Activity

drivers: dma: dma_nxp_edma: add function for channel filtering

Browse source 
The point of this commit is to allow users to request specific
channels. The following code snippet shows how this may now be
achieved:

	int requested_channel = 5;
	int ret = dma_request_channel(dev, &requested_channel);

Signed-off-by: Laurentiu Mihalcea <laurentiu.mihalcea@nxp.com>
This commit is contained in:
Laurentiu Mihalcea 2024-02-07 16:38:44 +02:00 committed by Fabio Baltieri
parent 4ff5e29cfe
commit 41289dac06
1 changed files with 18 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

18
drivers/dma/dma_nxp_edma.c
View file

@ -573,6 +573,23 @@ static int edma_get_attribute(const struct device *dev, uint32_t type, uint32_t
return 0;
}
static bool edma_channel_filter(const struct device *dev, int chan_id, void *param)
{
int *requested_channel;
if (!param) {
return false;
}
requested_channel = param;
if (*requested_channel == chan_id && lookup_channel(dev, chan_id)) {
return true;
}
return false;
}
static const struct dma_driver_api edma_api = {
.reload = edma_reload,
.config = edma_config,
@ -582,6 +599,7 @@ static const struct dma_driver_api edma_api = {
.resume = edma_start,
.get_status = edma_get_status,
.get_attribute = edma_get_attribute,
.chan_filter = edma_channel_filter,
};
static int edma_init(const struct device *dev)