iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
414,265 Commits 104 Branches 1,843 Tags 5.7 GiB
f17e9fa568
Commit Graph

4 Commits

Author SHA1 Message Date
Mark Brown
7e016d146f Merge remote-tracking branch 'spi/topic/pxa' into spi-next 2013-06-26 16:21:03 +01:00
Mika Westerberg
5548f98c46 spi/pxa2xx: use GFP_ATOMIC in sg table allocation 
pxa2xx_spi_map_dma_buffer() gets called in tasklet context so we can't
sleep when we allocate a new sg table. Use GFP_ATOMIC here instead.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Cc: stable@vger.kernel.org
 2013-06-18 19:11:04 +01:00
Mika Westerberg
cddb339bad spi/pxa2xx: convert to dma_request_slave_channel_compat() 
Now that we have these nice DMA API helper functions we can take advantage
of those instead of open-coding the channel/request line extraction from
ACPI. Use the _compat version which still allows passing the
channel/request line from platform data.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
 2013-05-13 17:59:00 +04:00
Mika Westerberg
5928808ef6 spi/pxa2xx: add support for DMA engine 
To be able to use DMA with this driver on non-PXA platforms we implement
support for the generic DMA engine API. This lets user to use different DMA
engines with little or no modification to the driver.

Request lines and channel numbers can be passed to the driver from the
platform specific data.

The DMA engine implementation will be selected by default even on PXA
platform. User can select the legacy DMA API by enabling Kconfig option
CONFIG_SPI_PXA2XX_PXADMA.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Lu Cao <lucao@marvell.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
 2013-02-08 12:15:28 +00:00