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drivers: sam dma xdmac: implemented dma device get_status()

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the sam xdmac driver does not yet implement the
get_status() function. with this commit the function
will be implemented. Fixes #62003

Signed-off-by: Sven Ginka <sven.ginka@gmail.com>
This commit is contained in:
Sven Ginka 2023-08-28 16:35:17 +02:00 • committed by Fabio Baltieri
commit bc695c6df5
1 changed files with 25 additions and 0 deletions
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25
drivers/dma/dma_sam_xdmac.c
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@ -375,11 +375,36 @@ static int sam_xdmac_initialize(const struct device *dev)
return 0;
}
static int sam_xdmac_get_status(const struct device *dev, uint32_t channel,
struct dma_status *status)
{
const struct sam_xdmac_dev_cfg *const dev_cfg = dev->config;
Xdmac * const xdmac = dev_cfg->regs;
uint32_t chan_cfg = xdmac->XDMAC_CHID[channel].XDMAC_CC;
uint32_t ublen = xdmac->XDMAC_CHID[channel].XDMAC_CUBC;
/* we need to check some of the XDMAC_CC registers to determine the DMA direction */
if ((chan_cfg & XDMAC_CC_TYPE_Msk) == 0) {
status->dir = MEMORY_TO_MEMORY;
} else if ((chan_cfg & XDMAC_CC_DSYNC_Msk) == XDMAC_CC_DSYNC_MEM2PER) {
status->dir = MEMORY_TO_PERIPHERAL;
} else {
status->dir = PERIPHERAL_TO_MEMORY;
}
status->busy = ((chan_cfg & XDMAC_CC_INITD_Msk) != 0) || (ublen > 0);
status->pending_length = ublen;
return 0;
}
static const struct dma_driver_api sam_xdmac_driver_api = {
.config = sam_xdmac_config,
.reload = sam_xdmac_transfer_reload,
.start = sam_xdmac_transfer_start,
.stop = sam_xdmac_transfer_stop,
.get_status = sam_xdmac_get_status,
};
/* DMA0 */