This is a note to let you know that I've just added the patch titled
ASoC: kirkwood: Fix reference to PCM buffer address
to the 5.13-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
asoc-kirkwood-fix-reference-to-pcm-buffer-address.patch
and it can be found in the queue-5.13 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From bb6a40fc5a830cae45ddd5cd6cfa151b008522ed Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@xxxxxxx>
Date: Wed, 28 Jul 2021 13:23:53 +0200
Subject: ASoC: kirkwood: Fix reference to PCM buffer address
From: Takashi Iwai <tiwai@xxxxxxx>
commit bb6a40fc5a830cae45ddd5cd6cfa151b008522ed upstream.
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: b3c0ae75f5d3 ("ASoC: kirkwood: Use managed DMA buffer allocation")
Cc: Lars-Peter Clausen <lars@xxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Link: https://lore.kernel.org/r/20210728112353.6675-6-tiwai@xxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
sound/soc/kirkwood/kirkwood-dma.c | 26 ++++++++++++++++++--------
1 file changed, 18 insertions(+), 8 deletions(-)
--- a/sound/soc/kirkwood/kirkwood-dma.c
+++ b/sound/soc/kirkwood/kirkwood-dma.c
@@ -104,8 +104,6 @@ static int kirkwood_dma_open(struct snd_
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_
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
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 ki
.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,
Patches currently in stable-queue which might be from tiwai@xxxxxxx are
queue-5.13/asoc-amd-fix-reference-to-pcm-buffer-address.patch
queue-5.13/asoc-kirkwood-fix-reference-to-pcm-buffer-address.patch
queue-5.13/asoc-xilinx-fix-reference-to-pcm-buffer-address.patch
queue-5.13/asoc-uniphier-fix-reference-to-pcm-buffer-address.patch
queue-5.13/asoc-intel-atom-fix-reference-to-pcm-buffer-address.patch
