ASoC: Blackfin: push down SPORT settings from global variables

Now that we have multi-component support, take the time to unify the
SPORT implementations a bit and make the setup dynamic.  This kills
off the global sport_handle which was shared across all the Blackfin
machine drivers.  The pin management aspect is off loaded to platform
resources, and now multiple SPORTs can be instantiated simultaneously.

Signed-off-by: Barry Song <barry.song@analog.com>
Signed-off-by: Scott Jiang <scott.jiang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 12 insertions, 9 deletions

diff --git a/sound/soc/blackfin/bf5xx-i2s-pcm.c b/sound/soc/blackfin/bf5xx-i2s-pcm.c
index 50b1df8..b5101ef 100644
--- a/sound/soc/blackfin/bf5xx-i2s-pcm.c
+++ b/sound/soc/blackfin/bf5xx-i2s-pcm.c
@@ -148,10 +148,15 @@ static snd_pcm_uframes_t bf5xx_pcm_pointer(struct snd_pcm_substream *substream)
 
 static int bf5xx_pcm_open(struct snd_pcm_substream *substream)
 {
+	struct snd_soc_pcm_runtime *rtd = substream->private_data;
+	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
+	struct sport_device *sport_handle = snd_soc_dai_get_drvdata(cpu_dai);
 	struct snd_pcm_runtime *runtime = substream->runtime;
+	struct snd_dma_buffer *buf = &substream->dma_buffer;
 	int ret;
 
 	pr_debug("%s enter\n", __func__);
+
 	snd_soc_set_runtime_hwparams(substream, &bf5xx_pcm_hardware);
 
 	ret = snd_pcm_hw_constraint_integer(runtime, \
@@ -159,9 +164,14 @@ static int bf5xx_pcm_open(struct snd_pcm_substream *substream)
 	if (ret < 0)
 		goto out;
 
-	if (sport_handle != NULL)
+	if (sport_handle != NULL) {
+		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+			sport_handle->tx_buf = buf->area;
+		else
+			sport_handle->rx_buf = buf->area;
+
 		runtime->private_data = sport_handle;
-	else {
+	} else {
 		pr_err("sport_handle is NULL\n");
 		return -1;
 	}
@@ -214,11 +224,6 @@ static int bf5xx_pcm_preallocate_dma_buffer(struct snd_pcm *pcm, int stream)
 	pr_debug("%s, area:%p, size:0x%08lx\n", __func__,
 		buf->area, buf->bytes);
 
-	if (stream == SNDRV_PCM_STREAM_PLAYBACK)
-		sport_handle->tx_buf = buf->area;
-	else
-		sport_handle->rx_buf = buf->area;
-
 	return 0;
 }
 
@@ -239,8 +244,6 @@ static void bf5xx_pcm_free_dma_buffers(struct snd_pcm *pcm)
 		dma_free_coherent(NULL, buf->bytes, buf->area, 0);
 		buf->area = NULL;
 	}
-	if (sport_handle)
-		sport_done(sport_handle);
 }
 
 static u64 bf5xx_pcm_dmamask = DMA_BIT_MASK(32);