ARM: edma: Fix configuration parsing for SoCs with multiple eDMA3 CC
The edma_setup_from_hw() should know about the CC number when parsing the CCCFG register - when it reads the register to be precise. The base addresses for CCs stored in an array and we need to provide the correct id to edma_read() in order to read the correct register. Cc: <stable@vger.kernel.org> # 3.16 Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Sekhar Nori <nsekhar@ti.com>
This commit is contained in:
parent
7d1311b93e
commit
929a015b18
|
@ -1443,14 +1443,14 @@ void edma_assign_channel_eventq(unsigned channel, enum dma_event_q eventq_no)
|
|||
EXPORT_SYMBOL(edma_assign_channel_eventq);
|
||||
|
||||
static int edma_setup_from_hw(struct device *dev, struct edma_soc_info *pdata,
|
||||
struct edma *edma_cc)
|
||||
struct edma *edma_cc, int cc_id)
|
||||
{
|
||||
int i;
|
||||
u32 value, cccfg;
|
||||
s8 (*queue_priority_map)[2];
|
||||
|
||||
/* Decode the eDMA3 configuration from CCCFG register */
|
||||
cccfg = edma_read(0, EDMA_CCCFG);
|
||||
cccfg = edma_read(cc_id, EDMA_CCCFG);
|
||||
|
||||
value = GET_NUM_REGN(cccfg);
|
||||
edma_cc->num_region = BIT(value);
|
||||
|
@ -1464,7 +1464,8 @@ static int edma_setup_from_hw(struct device *dev, struct edma_soc_info *pdata,
|
|||
value = GET_NUM_EVQUE(cccfg);
|
||||
edma_cc->num_tc = value + 1;
|
||||
|
||||
dev_dbg(dev, "eDMA3 HW configuration (cccfg: 0x%08x):\n", cccfg);
|
||||
dev_dbg(dev, "eDMA3 CC%d HW configuration (cccfg: 0x%08x):\n", cc_id,
|
||||
cccfg);
|
||||
dev_dbg(dev, "num_region: %u\n", edma_cc->num_region);
|
||||
dev_dbg(dev, "num_channel: %u\n", edma_cc->num_channels);
|
||||
dev_dbg(dev, "num_slot: %u\n", edma_cc->num_slots);
|
||||
|
@ -1684,7 +1685,7 @@ static int edma_probe(struct platform_device *pdev)
|
|||
return -ENOMEM;
|
||||
|
||||
/* Get eDMA3 configuration from IP */
|
||||
ret = edma_setup_from_hw(dev, info[j], edma_cc[j]);
|
||||
ret = edma_setup_from_hw(dev, info[j], edma_cc[j], j);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
|
|
Loading…
Reference in a new issue