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[media] blackfin: add error frame support

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Mark current frame as error frame when ppi error interrupt
report fifo error. Member next_frm in struct bcap_device can
be optimized out.

Signed-off-by: Scott Jiang <scott.jiang.linux@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Scott Jiang
2013-01-18 17:09:48 -03:00
committed by Mauro Carvalho Chehab
parent 1e2043779d
commit d78a488221
3 changed files with 33 additions and 18 deletions
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11
drivers/media/platform/blackfin/ppi.c
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@@ -59,19 +59,30 @@ static irqreturn_t ppi_irq_err(int irq, void *dev_id)
* others are W1C
*/
status = bfin_read16(&reg->status);
if (status & 0x3000)
ppi->err = true;
bfin_write16(&reg->status, 0xff00);
break;
}
case PPI_TYPE_EPPI:
{
struct bfin_eppi_regs *reg = info->base;
unsigned short status;
status = bfin_read16(&reg->status);
if (status & 0x2)
ppi->err = true;
bfin_write16(&reg->status, 0xffff);
break;
}
case PPI_TYPE_EPPI3:
{
struct bfin_eppi3_regs *reg = info->base;
unsigned long stat;
stat = bfin_read32(&reg->stat);
if (stat & 0x2)
ppi->err = true;
bfin_write32(&reg->stat, 0xc0ff);
break;
}