linux.git/sound/core/memalloc.c, branch v3.13

sound/core/memalloc.c: use gen_pool_dma_alloc() to allocate iram buffer

2013-11-15T00:32:23+00:00

Since gen_pool_dma_alloc() is introduced, we implement it to simplify code.

Signed-off-by: Nicolin Chen 
Acked-by: Takashi Iwai 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

ALSA: memalloc: NULL-initialize in snd_malloc_dev_iram()

2013-10-29T10:59:31+00:00

dmab->area and addr fields should be cleared at the head of
snd_malloc_dev_iram() as especially dmab->area is used to indicate the
allocation failure / fallback.

Signed-off-by: Takashi Iwai

ALSA: memalloc: Make snd_{malloc|free}_dev_iram() static

2013-10-29T10:56:21+00:00

These are used only locally.

Signed-off-by: Takashi Iwai

ALSA: memalloc: Yet another ifdef CONFIG_GENERIC_ALLOCATOR protection

2013-10-28T15:08:27+00:00

I obviously forgot to merge the right version...

Reported-by: Stephen Rothwell 
Signed-off-by: Takashi Iwai

ALSA: Add ifdef CONFIG_GENERIC_ALLOCATOR for SNDRV_DMA_TYPE_IRAM code

2013-10-24T12:36:40+00:00

It turned out that we can't use gen_pool_*() functions on archs
without CONFIG_GENERIC_ALLOCATOR (resulting in missing symbols), since
linux/genalloc.h doesn't provide dummy functions for all.  We'd be
able to fix linux/genalloc.h size, but I take an easier path for
now...

Reported-by: Fengguang Wu 
Signed-off-by: Takashi Iwai

ALSA: Add SoC on-chip internal ram support for DMA buffer allocation

2013-10-24T07:20:47+00:00

Now it's quite common that an SoC contains its on-chip internal RAM.
By using this RAM space for DMA buffer during audio playback/record,
we can shutdown the voltage for external RAM to save power.

So add new DEV type with iram malloc()/free() and accordingly modify
current default mmap() for the iram circumstance.

Signed-off-by: Nicolin Chen 
Reviewed-by: Lars-Peter Clausen 
Signed-off-by: Takashi Iwai

ALSA: add/change some comments describing function return values

2013-03-12T07:32:53+00:00

script/kernel-doc reports the following type of warnings (when run in verbose
mode):

Warning(sound/core/init.c:152): No description found for return value of
'snd_card_create'

To fix that:
- add missing descriptions of function return values
- use "Return:" sections to describe those return values

Along the way:
- complete some descriptions
- fix some typos

Signed-off-by: Yacine Belkadi 
Signed-off-by: Takashi Iwai

treewide: Correct spelling of successfully in comments

2011-09-27T16:08:04+00:00

Signed-off-by: Joe Perches 
Signed-off-by: Jiri Kosina

ALSA: core: sparse cleanups

2011-02-14T16:10:11+00:00

Change the core code where sparse complains.  In most cases, this means
just adding annotations to confirm that we indeed want to do the dirty
things we're doing.

Signed-off-by: Clemens Ladisch 
Signed-off-by: Takashi Iwai

ALSA: Fix SG-buffer DMA with non-coherent architectures

2009-07-08T12:20:20+00:00

Using SG-buffers with dma_alloc_coherent() is often very inefficient
on non-coherent architectures because a tracking record could be
allocated in addition for each dma_alloc_coherent() call.
Instead, simply disable SG-buffers but just allocate normal continuous
buffers on non-supported (currently all but x86) architectures.

Signed-off-by: Takashi Iwai