linux-toradex.git/drivers/dma/imx-sdma.c, branch v3.10.11

dma: Remove erroneous exit and exit_p() references

2013-04-15T04:21:16+00:00

Removing the annotation with __exit and referencing with __exit_p()
present in dma driver module remove hooks.

Part of the __devexit and __devexit_p() purge.

Signed-off-by: Maxin B. John 
Acked-by: Linus Walleij 
Signed-off-by: Vinod Koul

dma: imx-sdma: remove unneeded mach/hardware.h inclusion

2012-10-15T02:03:13+00:00

The inclusion of mach/hardware.h is not used in imx-sdma driver at all.
Remove it.

Signed-off-by: Shawn Guo 
Acked-by: Sascha Hauer 
Acked-by: Arnd Bergmann 
Cc: Vinod Koul

Merge tag 'sound-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

2012-10-08T22:07:14+00:00

Pull sound updates from Takashi Iwai:
"This contains pretty many small commits covering fairly large range of
files in sound/ directory. Partly because of additional API support
and partly because of constantly developed ASoC and ARM stuff.

Some highlights:

- Introduced the helper function and documentation for exposing the
channel map via control API, as discussed in Plumbers; most of PCI
drivers are covered, will follow more drivers later

- Most of drivers have been replaced with the new PM callbacks (if
the bus is supported)

- HD-audio controller got the support of runtime PM and the support
of D3 clock-stop. Also changing the power_save option in sysfs
kicks off immediately to enable / disable the power-save mode.

- Another significant code change in HD-audio is the rewrite of
firmware loading code. Other than that, most of changes in
HD-audio are continued cleanups and standardization for the generic
auto parser and bug fixes (HBR, device-specific fixups), in
addition to the support of channel-map API.

- Addition of ASoC bindings for the compressed API, used by the
mid-x86 drivers.

- Lots of cleanups and API refreshes for ASoC codec drivers and
DaVinci.

- Conversion of OMAP to dmaengine.

- New machine driver for Wolfson Microelectronics Bells.

- New CODEC driver for Wolfson Microelectronics WM0010.

- Enhancements to the ux500 and wm2000 drivers

- A new driver for DA9055 and the support for regulator bypass mode."

Fix up various arm soc header file reorg conflicts.

* tag 'sound-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (339 commits)
ALSA: hda - Add new codec ALC283 ALC290 support
ALSA: hda - avoid unneccesary indices on "Headphone Jack" controls
ALSA: hda - fix indices on boost volume on Conexant
ALSA: aloop - add locking to timer access
ALSA: hda - Fix hang caused by race during suspend.
sound: Remove unnecessary semicolon
ALSA: hda/realtek - Fix detection of ALC271X codec
ALSA: hda - Add inverted internal mic quirk for Lenovo IdeaPad U310
ALSA: hda - make Realtek/Sigmatel/Conexant use the generic unsol event
ALSA: hda - make a generic unsol event handler
ASoC: codecs: Add DA9055 codec driver
ASoC: eukrea-tlv320: Convert it to platform driver
ALSA: ASoC: add DT bindings for CS4271
ASoC: wm_hubs: Ensure volume updates are handled during class W startup
ASoC: wm5110: Adding missing volume update bits
ASoC: wm5110: Add OUT3R support
ASoC: wm5110: Add AEC loopback support
ASoC: wm5110: Rename EPOUT to HPOUT3
ASoC: arizona: Add more clock rates
ASoC: arizona: Add more DSP options for mixer input muxes
...

dmaengine: Pass flags via device_prep_dma_cyclic() callback

2012-09-22T15:12:45+00:00

Change the parameter list of device_prep_dma_cyclic() so the DMA drivers
can receive the flags coming from clients.
This feature can be used during audio operation to disable all audio
related interrupts when the DMA_PREP_INTERRUPT is cleared from the flags.

Signed-off-by: Peter Ujfalusi 
Acked-by: Nicolas Ferre 
Acked-by: Shawn Guo 
Acked-by: Vinod Koul 
Signed-off-by: Mark Brown

ARM: imx: move platform_data definitions

2012-09-14T09:17:21+00:00

Platform data for device drivers should be defined in
include/linux/platform_data/*.h, not in the architecture
and platform specific directories.

This moves such data out of the imx include directories

Signed-off-by: Arnd Bergmann 
Acked-by: Mark Brown 
Acked-by: Greg Kroah-Hartman 
Acked-by: Nicolas Pitre 
Acked-by: Mauro Carvalho Chehab 
Acked-by: Sascha Hauer 
Acked-by: Vinod Koul 
Cc: Russell King 
Cc: Dan Williams 
Cc: "Ben Dooks (embedded platforms)" 
Cc: "Wolfram Sang (embedded platforms)" 
Cc: Chris Ball 
Cc: David Woodhouse 
Cc: Grant Likely 
Cc: Alan Cox 
Cc: Felipe Balbi 
Cc: Alan Stern 
Cc: Florian Tobias Schandinat 
Cc: Liam Girdwood 
Cc: Javier Martin 
Cc: Shawn Guo 
Cc: Guennadi Liakhovetski

dma: imx-sdma: buf_tail should be initialize in prepare function

2012-06-07T08:18:42+00:00

This fix audio underrun issue. When SNDRV_PCM_TRIGGER_STOP
and SNDRV_PCM_TRIGGER_START, it calls prepare again. buf_tail
should be reset to zero.
So move buf_tail initialization into prepare function.

Signed-off-by: Richard Zhao 
Acked-by: Shawn Guo 
Signed-off-by: Vinod Koul

Merge tag 'clock' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

2012-05-26T19:42:29+00:00

Pull arm-soc clock driver changes from Olof Johansson:
 "The new clock subsystem was merged in linux-3.4 without any users,
  this now moves the first three platforms over to it: imx, mxs and
  spear.

  The series also contains the changes for the clock subsystem itself,
  since Mike preferred to have it together with the platforms that
  require these changes, in order to avoid interdependencies and
  conflicts."

Fix up trivial conflicts in arch/arm/mach-kirkwood/common.c (code
removed in one branch, added OF support in another) and
drivers/dma/imx-sdma.c (independent changes next to each other).

* tag 'clock' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (97 commits)
  clk: Fix CLK_SET_RATE_GATE flag validation in clk_set_rate().
  clk: Provide dummy clk_unregister()
  SPEAr: Update defconfigs
  SPEAr: Add SMI NOR partition info in dts files
  SPEAr: Switch to common clock framework
  SPEAr: Call clk_prepare() before calling clk_enable
  SPEAr: clk: Add General Purpose Timer Synthesizer clock
  SPEAr: clk: Add Fractional Synthesizer clock
  SPEAr: clk: Add Auxiliary Synthesizer clock
  SPEAr: clk: Add VCO-PLL Synthesizer clock
  SPEAr: Add DT bindings for SPEAr's timer
  ARM i.MX: remove now unused clock files
  ARM: i.MX6: implement clocks using common clock framework
  ARM i.MX35: implement clocks using common clock framework
  ARM i.MX5: implement clocks using common clock framework
  ARM: Kirkwood: Replace clock gating
  ARM: Orion: Audio: Add clk/clkdev support
  ARM: Orion: PCIE: Add support for clk
  ARM: Orion: XOR: Add support for clk
  ARM: Orion: CESA: Add support for clk
  ...

dma: imx-sdma: make channel0 operations atomic

2012-05-11T08:30:38+00:00

device_prep_dma_cyclic may be call in audio trigger function which is
atomic context, so we make it atomic too.

 - change channel0 lock to spinlock.
 - Use polling to wait for channel0 finish running.

Signed-off-by: Richard Zhao 
Acked-by: Shawn Guo 
Signed-off-by: Vinod Koul

dmaengine: Use dma_sg_len(sg) instead of sg->length

2012-05-11T06:34:38+00:00

sg->length may or may not contain the length of the dma region to transfer,
depending on the architecture - dma_sg_len(sg) always will though. For the
architectures which use the drivers modified by this patch it probably is the
case that sg->length contains the dma transfer length. But to be consistent and
future proof change them to use dma_sg_len.

To quote Russel King:
	sg->length is meaningless to something performing DMA.

	In cases where sg_dma_len(sg) and sg->length are the same storage, then
	there's no problem. But scatterlists _can_ (and one some architectures) do
	split them - especially when you have an IOMMU which can allow you to
	combine a scatterlist into fewer entries.

	So, anything using sg->length for the size of a scatterlist's DMA transfer
	_after_ a call to dma_map_sg() is almost certainly buggy.

The patch has been generated using the following coccinelle patch:

@@
struct scatterlist *sg;
expression X;
@@
-sg[X].length
+sg_dma_len(&sg[X])
@@
struct scatterlist *sg;
@@
-sg->length
+sg_dma_len(sg)


Signed-off-by: Lars-Peter Clausen 
Acked-by: Linus Walleij 
Signed-off-by: Vinod Koul

dma: imx-sdma: keep the callbacks invoked in the tasklet

2012-05-11T05:38:10+00:00

The current code keeps the callbacks invoked from interrupt context, this
does not conform to the Documentation/dmaengine.txt.

So add tasklet support to fix this issue.

Signed-off-by: Huang Shijie 
Signed-off-by: Vinod Koul