korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-24 04:34:08 +08:00
Code Issues Packages Projects Releases Wiki Activity

ASoC: kirkwood: Fix reference to PCM buffer address

Browse Source 
The transition to the managed PCM buffers allowed the dynamically
buffer allocation, while the driver code still assumes the fixed
preallocation buffer and sets up the DMA stuff at the open call.
This needs to be moved to hw_params after the buffer allocation and
setup.  Also, the reference to the buffer address has to be corrected
to runtime->dma_addr.

Fixes: b3c0ae75f5 ("ASoC: kirkwood: Use managed DMA buffer allocation")
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20210728112353.6675-6-tiwai@suse.de
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Takashi Iwai 2021-07-28 13:23:53 +02:00 committed by Mark Brown
parent 827f3164aa
commit bb6a40fc5a
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 18 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
sound/soc/kirkwood/kirkwood-dma.c
View File

@ -104,8 +104,6 @@ static int kirkwood_dma_open(struct snd_soc_component *component,
int err;
struct snd_pcm_runtime *runtime = substream->runtime;
struct kirkwood_dma_data *priv = kirkwood_priv(substream);
const struct mbus_dram_target_info *dram;
unsigned long addr;
snd_soc_set_runtime_hwparams(substream, &kirkwood_dma_snd_hw);
@ -142,20 +140,14 @@ static int kirkwood_dma_open(struct snd_soc_component *component,
writel((unsigned int)-1, priv->io + KIRKWOOD_ERR_MASK);
}
dram = mv_mbus_dram_info();
addr = substream->dma_buffer.addr;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
if (priv->substream_play)
return -EBUSY;
priv->substream_play = substream;
kirkwood_dma_conf_mbus_windows(priv->io,
KIRKWOOD_PLAYBACK_WIN, addr, dram);
} else {
if (priv->substream_rec)
return -EBUSY;
priv->substream_rec = substream;
kirkwood_dma_conf_mbus_windows(priv->io,
KIRKWOOD_RECORD_WIN, addr, dram);
}
return 0;
@ -182,6 +174,23 @@ static int kirkwood_dma_close(struct snd_soc_component *component,
return 0;
}
static int kirkwood_dma_hw_params(struct snd_soc_component *component,
struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct kirkwood_dma_data *priv = kirkwood_priv(substream);
const struct mbus_dram_target_info *dram = mv_mbus_dram_info();
unsigned long addr = substream->runtime->dma_addr;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
kirkwood_dma_conf_mbus_windows(priv->io,
KIRKWOOD_PLAYBACK_WIN, addr, dram);
else
kirkwood_dma_conf_mbus_windows(priv->io,
KIRKWOOD_RECORD_WIN, addr, dram);
return 0;
}
static int kirkwood_dma_prepare(struct snd_soc_component *component,
struct snd_pcm_substream *substream)
{
@ -246,6 +255,7 @@ const struct snd_soc_component_driver kirkwood_soc_component = {
.name = DRV_NAME,
.open = kirkwood_dma_open,
.close = kirkwood_dma_close,
.hw_params = kirkwood_dma_hw_params,
.prepare = kirkwood_dma_prepare,
.pointer = kirkwood_dma_pointer,
.pcm_construct = kirkwood_dma_new,