Merge these two structures together; nothing other than the I2S and DMA driver makes use of struct kirkwood_dma_data, and it's not like struct kirkwood_dma_data is really just used to convey DMA specific data to the backend; it's more a general shared structure between the two halves.
This will later allow kirkwood-dma.c and kirkwood-i2s.c to be merged together.
Signed-off-by: Russell King rmk+kernel@arm.linux.org.uk --- sound/soc/kirkwood/kirkwood-dma.c | 76 +++++++++++-------------------------- sound/soc/kirkwood/kirkwood.h | 2 + 2 files changed, 24 insertions(+), 54 deletions(-)
diff --git a/sound/soc/kirkwood/kirkwood-dma.c b/sound/soc/kirkwood/kirkwood-dma.c index d3d4bdc..112c262 100644 --- a/sound/soc/kirkwood/kirkwood-dma.c +++ b/sound/soc/kirkwood/kirkwood-dma.c @@ -33,11 +33,11 @@ SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE | \ SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE)
-struct kirkwood_dma_priv { - struct snd_pcm_substream *play_stream; - struct snd_pcm_substream *rec_stream; - struct kirkwood_dma_data *data; -}; +static struct kirkwood_dma_data *kirkwood_priv(struct snd_pcm_substream *subs) +{ + struct snd_soc_pcm_runtime *soc_runtime = subs->private_data; + return snd_soc_dai_get_drvdata(soc_runtime->cpu_dai); +}
static struct snd_pcm_hardware kirkwood_dma_snd_hw = { .info = (SNDRV_PCM_INFO_INTERLEAVED | @@ -63,8 +63,7 @@ static u64 kirkwood_dma_dmamask = DMA_BIT_MASK(32);
static irqreturn_t kirkwood_dma_irq(int irq, void *dev_id) { - struct kirkwood_dma_priv *prdata = dev_id; - struct kirkwood_dma_data *priv = prdata->data; + struct kirkwood_dma_data *priv = dev_id; unsigned long mask, status, cause;
mask = readl(priv->io + KIRKWOOD_INT_MASK); @@ -89,10 +88,10 @@ static irqreturn_t kirkwood_dma_irq(int irq, void *dev_id) writel(status, priv->io + KIRKWOOD_INT_CAUSE);
if (status & KIRKWOOD_INT_CAUSE_PLAY_BYTES) - snd_pcm_period_elapsed(prdata->play_stream); + snd_pcm_period_elapsed(priv->substream_play);
if (status & KIRKWOOD_INT_CAUSE_REC_BYTES) - snd_pcm_period_elapsed(prdata->rec_stream); + snd_pcm_period_elapsed(priv->substream_rec);
return IRQ_HANDLED; } @@ -126,15 +125,10 @@ static int kirkwood_dma_open(struct snd_pcm_substream *substream) { int err; struct snd_pcm_runtime *runtime = substream->runtime; - struct snd_soc_pcm_runtime *soc_runtime = substream->private_data; - struct snd_soc_platform *platform = soc_runtime->platform; - struct snd_soc_dai *cpu_dai = soc_runtime->cpu_dai; - struct kirkwood_dma_data *priv; - struct kirkwood_dma_priv *prdata = snd_soc_platform_get_drvdata(platform); + struct kirkwood_dma_data *priv = kirkwood_priv(substream); const struct mbus_dram_target_info *dram; unsigned long addr;
- priv = snd_soc_dai_get_dma_data(cpu_dai, substream); snd_soc_set_runtime_hwparams(substream, &kirkwood_dma_snd_hw);
/* Ensure that all constraints linked to dma burst are fulfilled */ @@ -157,21 +151,11 @@ static int kirkwood_dma_open(struct snd_pcm_substream *substream) if (err < 0) return err;
- if (prdata == NULL) { - prdata = kzalloc(sizeof(struct kirkwood_dma_priv), GFP_KERNEL); - if (prdata == NULL) - return -ENOMEM; - - prdata->data = priv; - + if (!priv->substream_play && !priv->substream_rec) { err = request_irq(priv->irq, kirkwood_dma_irq, IRQF_SHARED, - "kirkwood-i2s", prdata); - if (err) { - kfree(prdata); + "kirkwood-i2s", priv); + if (err) return -EBUSY; - } - - snd_soc_platform_set_drvdata(platform, prdata);
/* * Enable Error interrupts. We're only ack'ing them but @@ -183,11 +167,11 @@ static int kirkwood_dma_open(struct snd_pcm_substream *substream) dram = mv_mbus_dram_info(); addr = substream->dma_buffer.addr; if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { - prdata->play_stream = substream; + priv->substream_play = substream; kirkwood_dma_conf_mbus_windows(priv->io, KIRKWOOD_PLAYBACK_WIN, addr, dram); } else { - prdata->rec_stream = substream; + priv->substream_rec = substream; kirkwood_dma_conf_mbus_windows(priv->io, KIRKWOOD_RECORD_WIN, addr, dram); } @@ -197,27 +181,19 @@ static int kirkwood_dma_open(struct snd_pcm_substream *substream)
static int kirkwood_dma_close(struct snd_pcm_substream *substream) { - struct snd_soc_pcm_runtime *soc_runtime = substream->private_data; - struct snd_soc_dai *cpu_dai = soc_runtime->cpu_dai; - struct snd_soc_platform *platform = soc_runtime->platform; - struct kirkwood_dma_priv *prdata = snd_soc_platform_get_drvdata(platform); - struct kirkwood_dma_data *priv; - - priv = snd_soc_dai_get_dma_data(cpu_dai, substream); + struct kirkwood_dma_data *priv = kirkwood_priv(substream);
- if (!prdata || !priv) + if (!priv) return 0;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) - prdata->play_stream = NULL; + priv->substream_play = NULL; else - prdata->rec_stream = NULL; + priv->substream_rec = NULL;
- if (!prdata->play_stream && !prdata->rec_stream) { + if (!priv->substream_play && !priv->substream_rec) { writel(0, priv->io + KIRKWOOD_ERR_MASK); - free_irq(priv->irq, prdata); - kfree(prdata); - snd_soc_platform_set_drvdata(platform, NULL); + free_irq(priv->irq, priv); }
return 0; @@ -243,13 +219,9 @@ static int kirkwood_dma_hw_free(struct snd_pcm_substream *substream) static int kirkwood_dma_prepare(struct snd_pcm_substream *substream) { struct snd_pcm_runtime *runtime = substream->runtime; - struct snd_soc_pcm_runtime *soc_runtime = substream->private_data; - struct snd_soc_dai *cpu_dai = soc_runtime->cpu_dai; - struct kirkwood_dma_data *priv; + struct kirkwood_dma_data *priv = kirkwood_priv(substream); unsigned long size, count;
- priv = snd_soc_dai_get_dma_data(cpu_dai, substream); - /* compute buffer size in term of "words" as requested in specs */ size = frames_to_bytes(runtime, runtime->buffer_size); size = (size>>2)-1; @@ -272,13 +244,9 @@ static int kirkwood_dma_prepare(struct snd_pcm_substream *substream) static snd_pcm_uframes_t kirkwood_dma_pointer(struct snd_pcm_substream *substream) { - struct snd_soc_pcm_runtime *soc_runtime = substream->private_data; - struct snd_soc_dai *cpu_dai = soc_runtime->cpu_dai; - struct kirkwood_dma_data *priv; + struct kirkwood_dma_data *priv = kirkwood_priv(substream); snd_pcm_uframes_t count;
- priv = snd_soc_dai_get_dma_data(cpu_dai, substream); - if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) count = bytes_to_frames(substream->runtime, readl(priv->io + KIRKWOOD_PLAY_BYTE_COUNT)); diff --git a/sound/soc/kirkwood/kirkwood.h b/sound/soc/kirkwood/kirkwood.h index 4d92637..10a3aaa 100644 --- a/sound/soc/kirkwood/kirkwood.h +++ b/sound/soc/kirkwood/kirkwood.h @@ -129,6 +129,8 @@ struct kirkwood_dma_data { struct clk *extclk; uint32_t ctl_play; uint32_t ctl_rec; + struct snd_pcm_substream *substream_play; + struct snd_pcm_substream *substream_rec; int irq; int burst; };