ASoC: qcom: pass direction to dma allocation

This patch updates the internal dma allocation callbacks to take the
stream direction so that it can allocate channels suitable for that
stream direction. Before the capture support this was not necessary.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Acked-by: Kenneth Westfield <kwestfie@codeaurora.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/qcom/lpass-apq8016.c

@@ -133,7 +133,8 @@ static struct snd_soc_dai_driver apq8016_lpass_cpu_dai_driver[] = {
 	},
 };
 
-static int apq8016_lpass_alloc_dma_channel(struct lpass_data *drvdata)
+static int apq8016_lpass_alloc_dma_channel(struct lpass_data *drvdata,
+					   int direction)
 {
 	struct lpass_variant *v = drvdata->variant;
 	int chan = find_first_zero_bit(&drvdata->rdma_ch_bit_map,

sound/soc/qcom/lpass-ipq806x.c

@@ -63,7 +63,7 @@ static struct snd_soc_dai_driver ipq806x_lpass_cpu_dai_driver = {
 	.ops    = &asoc_qcom_lpass_cpu_dai_ops,
 };
 
-static int ipq806x_lpass_alloc_dma_channel(struct lpass_data *drvdata)
+static int ipq806x_lpass_alloc_dma_channel(struct lpass_data *drvdata, int dir)
 {
 	return IPQ806X_LPAIF_RDMA_CHAN_MI2S;
 }

sound/soc/qcom/lpass-platform.c

@@ -457,7 +457,8 @@ static int lpass_platform_pcm_new(struct snd_soc_pcm_runtime *soc_runtime)
 		return -ENOMEM;
 
 	if (v->alloc_dma_channel)
-		data->rdma_ch = v->alloc_dma_channel(drvdata);
+		data->rdma_ch = v->alloc_dma_channel(drvdata,
+						SNDRV_PCM_STREAM_PLAYBACK);
 
 	if (IS_ERR_VALUE(data->rdma_ch))
 		return data->rdma_ch;

sound/soc/qcom/lpass.h

@@ -84,7 +84,7 @@ struct lpass_variant {
 	/* SOC specific intialization like clocks */
 	int (*init)(struct platform_device *pdev);
 	int (*exit)(struct platform_device *pdev);
-	int (*alloc_dma_channel)(struct lpass_data *data);
+	int (*alloc_dma_channel)(struct lpass_data *data, int direction);
 	int (*free_dma_channel)(struct lpass_data *data, int ch);
 
 	/* SOC specific dais */