Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 633e42b8 authored by Peter Ujfalusi's avatar Peter Ujfalusi Committed by Vinod Koul
Browse files

dmaengine: edma: Get qDMA channel information from HW also 



Query the number of qDMA channels from CCCFG register.

Signed-off-by: default avatarPeter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
parent f9425deb

drivers/dma/edma.c

+6 −0
Original line number Diff line number Diff line
@@ -107,6 +107,7 @@ 


/* CCCFG register */

#define GET_NUM_DMACH(x)	(x & 0x7) /* bits 0-2 */

#define GET_NUM_QDMACH(x)	(x & 0x70 >> 4) /* bits 4-6 */

#define GET_NUM_PAENTRY(x)	((x & 0x7000) >> 12) /* bits 12-14 */

#define GET_NUM_EVQUE(x)	((x & 0x70000) >> 16) /* bits 16-18 */

#define GET_NUM_REGN(x)		((x & 0x300000) >> 20) /* bits 20-21 */
@@ -220,6 +221,7 @@ struct edma_cc { 


	/* eDMA3 resource information */

	unsigned			num_channels;

	unsigned			num_qchannels;

	unsigned			num_region;

	unsigned			num_slots;

	unsigned			num_tc;
@@ -1819,6 +1821,9 @@ static int edma_setup_from_hw(struct device *dev, struct edma_soc_info *pdata, 
	value = GET_NUM_DMACH(cccfg);

	ecc->num_channels = BIT(value + 1);



	value = GET_NUM_QDMACH(cccfg);

	ecc->num_qchannels = value * 2;



	value = GET_NUM_PAENTRY(cccfg);

	ecc->num_slots = BIT(value + 4);
@@ -1830,6 +1835,7 @@ static int edma_setup_from_hw(struct device *dev, struct edma_soc_info *pdata, 
	dev_dbg(dev, "eDMA3 CC HW configuration (cccfg: 0x%08x):\n", cccfg);

	dev_dbg(dev, "num_region: %u\n", ecc->num_region);

	dev_dbg(dev, "num_channels: %u\n", ecc->num_channels);

	dev_dbg(dev, "num_qchannels: %u\n", ecc->num_qchannels);

	dev_dbg(dev, "num_slots: %u\n", ecc->num_slots);

	dev_dbg(dev, "num_tc: %u\n", ecc->num_tc);

	dev_dbg(dev, "chmap_exist: %s\n", ecc->chmap_exist ? "yes" : "no");