Commit Graph

8 Commits

Author SHA1 Message Date
Sascha Hauer
6584cb8825 ARM i.MX dma: Fix burstsize settings
dmaengine expects the maxburst parameter in words, not bytes.
The imxdma driver and its users do this wrong. Fix this.

As a side note the imx-pcm-dma-mx2 driver was 'fixed' to work
with imx-dma. This broke the driver with imx-sdma support which
correctly takes the maxburst parameter in words. This patch
puts the sdma based sound back to work.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2011-07-07 09:55:50 +02:00
Sascha Hauer
f8a356ff96 dmaengine i.MX dma: initialize dma capabilities outside channel loop
The capabilities are device specific fields, not channel specific fields.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2011-01-31 12:36:23 +01:00
Sascha Hauer
97a43dfe84 dmaengine i.MX DMA: do not initialize chan_id field
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2011-01-31 12:36:10 +01:00
Sascha Hauer
d07102a1bb dmaengine i.MX dma: check sg entries for valid addresses and lengths
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2011-01-31 12:36:02 +01:00
Sascha Hauer
1e070a6099 dmaengine i.MX dma: set maximum segment size for our device
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2011-01-31 12:35:52 +01:00
Axel Lin
cbeae41888 dma: imx-dma: fix imxdma_probe error path
otherwise, i will be -1 inside the latest iteration of the while loop.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2010-12-03 01:39:03 -08:00
Sascha Hauer
8267f16e8b dma: imx-dma: fix signedness bug
mxdmac->channel was unsigned, so check (imxdmac->channel < 0) for
failed imx_dma_request_by_prio() made no sence.  Explicitly check
signed values.
Also, fix uninitialzed use of ret.

Signed-off-by: Vasiliy Kulikov <segooon@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2010-10-22 11:08:27 -07:00
Sascha Hauer
1f1846c6ce dmaengine: Add Freescale i.MX1/21/27 DMA driver
This driver is currently implemented as a user to the old i.MX
DMA API. This allows us to convert each user of the old API to
the dmaengine API one by one. Once this is done the old DMA
driver can be merged into the i.MX dmaengine driver.

V2: remove some debug leftovers and unused variables

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2010-10-07 15:18:03 -07:00