From: mpa@pengutronix.de (Markus Pargmann)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 0/4] dma: mxs-dma bugfixes and cleanup
Date: Fri, 4 Oct 2013 12:44:05 +0200 [thread overview]
Message-ID: <1380883449-8649-1-git-send-email-mpa@pengutronix.de> (raw)
in v3 I dropped patch 2 from v2 (dma: mxs-dma: Pause channel while prep_dma_cyclic).
It seems to be fixed by one of the other patches.
On i.MX28 a channel reset can cause a channel failure until DMA engine reset.
I added a patch to observe the DMA state machine and wait for a suitable state.
The other patch fixes the dma channel software state when a interrupt occures on
a DMA channel that is not active after a reset.
Regards,
Markus
Markus Pargmann (4):
dma: mxs-dma: Cleanup interrupt handler
dma: mxs-dma: Report correct residue for cyclic DMA
dma: mxs-dma: Fix channel reset hardware bug
dma: mxs-dma: Update state after channel reset
drivers/dma/mxs-dma.c | 145 ++++++++++++++++++++++++++++++++++++--------------
1 file changed, 106 insertions(+), 39 deletions(-)
next reply other threads:[~2013-10-04 10:44 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-04 10:44 Markus Pargmann [this message]
2013-10-04 10:44 ` [PATCH v3 1/4] dma: mxs-dma: Cleanup interrupt handler Markus Pargmann
2013-10-04 10:44 ` [PATCH v3 2/4] dma: mxs-dma: Report correct residue for cyclic DMA Markus Pargmann
2013-10-04 10:44 ` [PATCH v3 3/4] dma: mxs-dma: Fix channel reset hardware bug Markus Pargmann
2013-10-04 10:44 ` [PATCH v3 4/4] dma: mxs-dma: Update state after channel reset Markus Pargmann
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