[PATCH 1/2] ASoC: SOF: Add support for pause supported tokens from topology

[Peter Ujfalusi <peter.ujfalusi@xxxxxxxxxxxxxxx>]

New tokens are added to topology:
1202: SOF_TKN_STREAM_PLAYBACK_PAUSE_SUPPORTED
1203: SOF_TKN_STREAM_CAPTURE_PAUSE_SUPPORTED

The new tokens are used to advertise support for PAUSE/RESUME operation on
a PCM device depending on firmware product, use case, pipeline topology.

The snd_sof_pcm_stream.pause_supported is updated to reflect the advertised
value for the PCM device.

If the token does not exist then the pause_supported is set to false.

Note: it is up to the platform code to use this flag to decide to advertise
the PAUSE support for user space or not.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@xxxxxxxxxxxxxxx>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@xxxxxxxxxxxxxxx>
Reviewed-by: Bard Liao <yung-chuan.liao@xxxxxxxxxxxxxxx>
Reviewed-by: Kai Vehmanen <kai.vehmanen@xxxxxxxxxxxxxxx>
Reviewed-by: Liam Girdwood <liam.r.girdwood@xxxxxxxxx>
---
 include/uapi/sound/sof/tokens.h | 2 ++
 sound/soc/sof/sof-audio.h       | 1 +
 sound/soc/sof/topology.c        | 4 ++++
 3 files changed, 7 insertions(+)

diff --git a/include/uapi/sound/sof/tokens.h b/include/uapi/sound/sof/tokens.h
index 0a246bc218d3..c28c766270de 100644
--- a/include/uapi/sound/sof/tokens.h
+++ b/include/uapi/sound/sof/tokens.h
@@ -153,6 +153,8 @@
 /* Stream */
 #define SOF_TKN_STREAM_PLAYBACK_COMPATIBLE_D0I3	1200
 #define SOF_TKN_STREAM_CAPTURE_COMPATIBLE_D0I3	1201
+#define SOF_TKN_STREAM_PLAYBACK_PAUSE_SUPPORTED	1202
+#define SOF_TKN_STREAM_CAPTURE_PAUSE_SUPPORTED	1203
 
 /* Led control for mute switches */
 #define SOF_TKN_MUTE_LED_USE			1300
diff --git a/sound/soc/sof/sof-audio.h b/sound/soc/sof/sof-audio.h
index 01b819dd8498..62f3c11a9216 100644
--- a/sound/soc/sof/sof-audio.h
+++ b/sound/soc/sof/sof-audio.h
@@ -332,6 +332,7 @@ struct snd_sof_pcm_stream {
 	struct work_struct period_elapsed_work;
 	struct snd_soc_dapm_widget_list *list; /* list of connected DAPM widgets */
 	bool d0i3_compatible; /* DSP can be in D0I3 when this pcm is opened */
+	bool pause_supported; /* PCM device supports PAUSE operation */
 	unsigned int dsp_max_burst_size_in_ms; /* The maximum size of the host DMA burst in ms */
 	/*
 	 * flag to indicate that the DSP pipelines should be kept
diff --git a/sound/soc/sof/topology.c b/sound/soc/sof/topology.c
index b3fca5fd87d6..688cc7ac1714 100644
--- a/sound/soc/sof/topology.c
+++ b/sound/soc/sof/topology.c
@@ -407,6 +407,10 @@ static const struct sof_topology_token stream_tokens[] = {
 		offsetof(struct snd_sof_pcm, stream[0].d0i3_compatible)},
 	{SOF_TKN_STREAM_CAPTURE_COMPATIBLE_D0I3, SND_SOC_TPLG_TUPLE_TYPE_BOOL, get_token_u16,
 		offsetof(struct snd_sof_pcm, stream[1].d0i3_compatible)},
+	{SOF_TKN_STREAM_PLAYBACK_PAUSE_SUPPORTED, SND_SOC_TPLG_TUPLE_TYPE_BOOL, get_token_u16,
+		offsetof(struct snd_sof_pcm, stream[0].pause_supported)},
+	{SOF_TKN_STREAM_CAPTURE_PAUSE_SUPPORTED, SND_SOC_TPLG_TUPLE_TYPE_BOOL, get_token_u16,
+		offsetof(struct snd_sof_pcm, stream[1].pause_supported)},
 };
 
 /* Leds */
-- 
2.47.1