Commit db1ed25f authored by Sven Ginka's avatar Sven Ginka Committed by Chris Friedt
Browse files

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

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: default avatarSven Ginka <sven.ginka@gmail.com>
(cherry picked from commit bc695c6d)
parent e6f70e97

drivers/dma/dma_sam_xdmac.c

+25 −0
Changes for drivers/dma/dma_sam_xdmac.c: 25 added lines, 0 removed lines.
Original line number Diff line number Diff line
@@ -354,11 +354,36 @@ 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 */

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