ASoC: sst_platform: remove hardcoding for voice dai checks

This patch removes hard coded value for checking the
voice dai.  It uses run time data to differentiate the voice dai.

Change-Id: I3064f8e3039014764a23ba4c65e76a40d7f6b10c
Signed-off-by: Ramesh Babu K V <ramesh.babu@intel.com>

diff --git a/sound/soc/mid-x86/sst_platform.c b/sound/soc/mid-x86/sst_platform.c
index f8404fe..2a89b8a 100644 (file)
--- a/sound/soc/mid-x86/sst_platform.c
+++ b/sound/soc/mid-x86/sst_platform.c
@@ -35,7 +35,7 @@
 #include "../../../drivers/staging/intel_sst/intel_sst.h"
 #include "sst_platform.h"
 
-#define VOICE_DAI 4
+#define SST_VOICE_DAI "Voice-cpu-dai"
 
 static struct snd_pcm_hardware sst_platform_pcm_hw = {
        .info = (SNDRV_PCM_INFO_INTERLEAVED |
@@ -248,11 +248,13 @@ static int sst_platform_open(struct snd_pcm_substream *substream)
        struct snd_pcm_runtime *runtime;
        struct sst_runtime_stream *stream;
        int ret_val = 0;
+       struct snd_soc_pcm_runtime *rtd = substream->private_data;
+       struct snd_soc_dai_link *dai_link = rtd->dai_link;
 
        pr_debug("sst_platform_open called\n");
        runtime = substream->runtime;
        runtime->hw = sst_platform_pcm_hw;
-       if (substream->pcm->device == VOICE_DAI) {
+       if (!strcmp(dai_link->cpu_dai_name, SST_VOICE_DAI)) {
                pr_debug("pcm_open for Voice, returning.\n");
                return snd_pcm_hw_constraint_integer(runtime,
                         SNDRV_PCM_HW_PARAM_PERIODS);
@@ -290,9 +292,11 @@ static int sst_platform_close(struct snd_pcm_substream *substream)
 {
        struct sst_runtime_stream *stream;
        int ret_val = 0, str_id;
+       struct snd_soc_pcm_runtime *rtd = substream->private_data;
+       struct snd_soc_dai_link *dai_link = rtd->dai_link;
 
        pr_debug("sst_platform_close called\n");
-       if (substream->pcm->device == VOICE_DAI) {
+       if (!strcmp(dai_link->cpu_dai_name, SST_VOICE_DAI)) {
                pr_debug("pcm_close for Voice, returning.\n");
                return ret_val;
        }
@@ -318,9 +322,12 @@ static int sst_platform_pcm_prepare(struct snd_pcm_substream *substream)
 {
        struct sst_runtime_stream *stream;
        int ret_val = 0, str_id;
+       struct snd_soc_pcm_runtime *rtd = substream->private_data;
+       struct snd_soc_dai_link *dai_link = rtd->dai_link;
 
        pr_debug("sst_platform_pcm_prepare called\n");
-       if (substream->pcm->device == VOICE_DAI) {
+
+       if (!strcmp(dai_link->cpu_dai_name, SST_VOICE_DAI)) {
                pr_debug("pcm_preare for Voice, returning.\n");
                return ret_val;
        }