From: Vinod Koul <vinod.koul@intel.com>
Date: Fri, 19 Sep 2014 11:16:03 +0000 (+0530)
Subject: ASoC: Intel: mfld-pcm: add control for powering up/down dsp
X-Git-Tag: firefly_0821_release~176^2~2610^2~90^2~5^5~9
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=0121327c1a68bc8c80f240c2794e682722b69051;p=firefly-linux-kernel-4.4.55.git

ASoC: Intel: mfld-pcm: add control for powering up/down dsp

When we have PCM (FE/BE) opened or DAPM widgets triggered we need power
up/down DSP accordingly. The DSP will do ref count of these requests
i.e. link these runtime_get/put calls of DSP

Also fix some preexisting spacing error.

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---

diff --git a/sound/soc/intel/sst-mfld-platform-pcm.c b/sound/soc/intel/sst-mfld-platform-pcm.c
index 8e1b2c14291c..aa9b600dfc9b 100644
--- a/sound/soc/intel/sst-mfld-platform-pcm.c
+++ b/sound/soc/intel/sst-mfld-platform-pcm.c
@@ -322,6 +322,16 @@ static int sst_platform_init_stream(struct snd_pcm_substream *substream)
 
 }
 
+static int power_up_sst(struct sst_runtime_stream *stream)
+{
+	return stream->ops->power(sst->dev, true);
+}
+
+static void power_down_sst(struct sst_runtime_stream *stream)
+{
+	stream->ops->power(sst->dev, false);
+}
+
 static int sst_media_open(struct snd_pcm_substream *substream,
 		struct snd_soc_dai *dai)
 {
@@ -351,6 +361,10 @@ static int sst_media_open(struct snd_pcm_substream *substream,
 	/* allocate memory for SST API set */
 	runtime->private_data = stream;
 
+	ret_val = power_up_sst(stream);
+	if (ret_val < 0)
+		return ret_val;
+
 	/* Make sure, that the period size is always even */
 	snd_pcm_hw_constraint_step(substream->runtime, 0,
 			   SNDRV_PCM_HW_PARAM_PERIODS, 2);
@@ -370,6 +384,8 @@ static void sst_media_close(struct snd_pcm_substream *substream,
 	int ret_val = 0, str_id;
 
 	stream = substream->runtime->private_data;
+	power_down_sst(stream);
+
 	str_id = stream->stream_info.str_id;
 	if (str_id)
 		ret_val = stream->ops->close(sst->dev, str_id);
diff --git a/sound/soc/intel/sst-mfld-platform.h b/sound/soc/intel/sst-mfld-platform.h
index 7092ee3e96a3..19f83ec51613 100644
--- a/sound/soc/intel/sst-mfld-platform.h
+++ b/sound/soc/intel/sst-mfld-platform.h
@@ -120,15 +120,16 @@ struct compress_sst_ops {
 };
 
 struct sst_ops {
-	int (*open) (struct device *dev, struct snd_sst_params *str_param);
-	int (*stream_init) (struct device *dev, struct pcm_stream_info *str_info);
-	int (*stream_start) (struct device *dev, int str_id);
-	int (*stream_drop) (struct device *dev, int str_id);
-	int (*stream_pause) (struct device *dev, int str_id);
-	int (*stream_pause_release) (struct device *dev, int str_id);
-	int (*stream_read_tstamp) (struct device *dev, struct pcm_stream_info *str_info);
+	int (*open)(struct device *dev, struct snd_sst_params *str_param);
+	int (*stream_init)(struct device *dev, struct pcm_stream_info *str_info);
+	int (*stream_start)(struct device *dev, int str_id);
+	int (*stream_drop)(struct device *dev, int str_id);
+	int (*stream_pause)(struct device *dev, int str_id);
+	int (*stream_pause_release)(struct device *dev, int str_id);
+	int (*stream_read_tstamp)(struct device *dev, struct pcm_stream_info *str_info);
 	int (*send_byte_stream)(struct device *dev, struct snd_sst_bytes_v2 *bytes);
-	int (*close) (struct device *dev, unsigned int str_id);
+	int (*close)(struct device *dev, unsigned int str_id);
+	int (*power)(struct device *dev, bool state);
 };
 
 struct sst_runtime_stream {