Merge series "ASoC: qdsp6: add gapless compressed audio support" from Srinivas...

Merge series "ASoC: qdsp6: add gapless compressed audio support" from Srinivas Kandagatla <srinivas.kandagatla@linaro.org>:

This patchset adds gapless compressed audio support on q6asm.
Gapless on q6asm is implemented using 2 streams in a single q6asm session.

First few patches such as stream id per each command, gapless flags
and silence meta data are for preparedness for adding gapless support.
Last patch implements copy callback to allow finer control over buffer offsets,
specially in partial drain cases.

This patchset is tested on RB3 aka DB845c platform.

This patchset as it is will support gapless however QDSP can also
support switching decoders on a single stream. Patches to support such feature
are send in different patchset which involves adding generic interfaces.

Thanks,
srini

Changes since v2:(mostly suggested by Pierre)
- removed unnessary kernel style comments,
- moved TIMESTAMP flag to respective patch.
- move preparatory code from gapless support patch to new one.
- fix subject prefix of one patch.
- add comments to clarify valid stream_ids

Srinivas Kandagatla (10):
  ASoC: q6asm: rename misleading session id variable
  ASoC: q6asm: make commands specific to streams
  ASoC: q6asm: use flags directly from q6asm-dai
  ASoC: q6asm: add length to write command token
  ASoC: q6asm: add support to remove intial and trailing silence
  ASoC: q6asm: add support to gapless flag in q6asm open
  ASoC: q6asm-dai: add next track metadata support
  ASoC: q6asm-dai: prepare set params to accept profile change
  ASoC: q6asm-dai: add gapless support
  ASoC: q6asm-dai: add support to copy callback

 sound/soc/qcom/qdsp6/q6asm-dai.c | 414 +++++++++++++++++++++++--------
 sound/soc/qcom/qdsp6/q6asm.c     | 169 +++++++++----
 sound/soc/qcom/qdsp6/q6asm.h     |  49 ++--
 3 files changed, 469 insertions(+), 163 deletions(-)

--
2.21.0

sound/soc/qcom/qdsp6/q6asm.h

@@ -20,6 +20,9 @@
 #define ASM_CLIENT_EVENT_CMD_RUN_DONE		0x1008
 #define ASM_CLIENT_EVENT_DATA_WRITE_DONE	0x1009
 #define ASM_CLIENT_EVENT_DATA_READ_DONE		0x100a
+#define ASM_WRITE_TOKEN_MASK			GENMASK(15, 0)
+#define ASM_WRITE_TOKEN_LEN_MASK		GENMASK(31, 16)
+#define ASM_WRITE_TOKEN_LEN_SHIFT		16
 
 enum {
 	LEGACY_PCM_MODE = 0,
@@ -29,8 +32,8 @@ enum {
 };
 
 #define MAX_SESSIONS	8
-#define NO_TIMESTAMP    0xFF00
 #define FORMAT_LINEAR_PCM   0x0000
+#define ASM_LAST_BUFFER_FLAG           BIT(30)
 
 struct q6asm_flac_cfg {
         u32 sample_rate;
@@ -93,37 +96,53 @@ struct audio_client *q6asm_audio_client_alloc(struct device *dev,
 					      q6asm_cb cb, void *priv,
 					      int session_id, int perf_mode);
 void q6asm_audio_client_free(struct audio_client *ac);
-int q6asm_write_async(struct audio_client *ac, uint32_t len, uint32_t msw_ts,
-		       uint32_t lsw_ts, uint32_t flags);
-int q6asm_open_write(struct audio_client *ac, uint32_t format,
-		     u32 codec_profile, uint16_t bits_per_sample);
+int q6asm_write_async(struct audio_client *ac, uint32_t stream_id, uint32_t len,
+		      uint32_t msw_ts, uint32_t lsw_ts, uint32_t flags);
+int q6asm_open_write(struct audio_client *ac, uint32_t stream_id,
+		     uint32_t format, u32 codec_profile,
+		     uint16_t bits_per_sample, bool is_gapless);
 
-int q6asm_open_read(struct audio_client *ac, uint32_t format,
-		     uint16_t bits_per_sample);
+int q6asm_open_read(struct audio_client *ac, uint32_t stream_id,
+		    uint32_t format, uint16_t bits_per_sample);
 int q6asm_enc_cfg_blk_pcm_format_support(struct audio_client *ac,
-		uint32_t rate, uint32_t channels, uint16_t bits_per_sample);
-int q6asm_read(struct audio_client *ac);
+					 uint32_t stream_id, uint32_t rate,
+					 uint32_t channels,
+					 uint16_t bits_per_sample);
+
+int q6asm_read(struct audio_client *ac, uint32_t stream_id);
 
 int q6asm_media_format_block_multi_ch_pcm(struct audio_client *ac,
+					  uint32_t stream_id,
 					  uint32_t rate, uint32_t channels,
 					  u8 channel_map[PCM_MAX_NUM_CHANNEL],
 					  uint16_t bits_per_sample);
 int q6asm_stream_media_format_block_flac(struct audio_client *ac,
+					 uint32_t stream_id,
 					 struct q6asm_flac_cfg *cfg);
 int q6asm_stream_media_format_block_wma_v9(struct audio_client *ac,
+					   uint32_t stream_id,
 					   struct q6asm_wma_cfg *cfg);
 int q6asm_stream_media_format_block_wma_v10(struct audio_client *ac,
+					    uint32_t stream_id,
 					    struct q6asm_wma_cfg *cfg);
 int q6asm_stream_media_format_block_alac(struct audio_client *ac,
+					 uint32_t stream_id,
 					 struct q6asm_alac_cfg *cfg);
 int q6asm_stream_media_format_block_ape(struct audio_client *ac,
+					uint32_t stream_id,
 					struct q6asm_ape_cfg *cfg);
-int q6asm_run(struct audio_client *ac, uint32_t flags, uint32_t msw_ts,
-	      uint32_t lsw_ts);
-int q6asm_run_nowait(struct audio_client *ac, uint32_t flags, uint32_t msw_ts,
-		     uint32_t lsw_ts);
-int q6asm_cmd(struct audio_client *ac, int cmd);
-int q6asm_cmd_nowait(struct audio_client *ac, int cmd);
+int q6asm_run(struct audio_client *ac, uint32_t stream_id, uint32_t flags,
+	      uint32_t msw_ts, uint32_t lsw_ts);
+int q6asm_run_nowait(struct audio_client *ac, uint32_t stream_id,
+		     uint32_t flags, uint32_t msw_ts, uint32_t lsw_ts);
+int q6asm_stream_remove_initial_silence(struct audio_client *ac,
+					uint32_t stream_id,
+					uint32_t initial_samples);
+int q6asm_stream_remove_trailing_silence(struct audio_client *ac,
+					 uint32_t stream_id,
+					 uint32_t trailing_samples);
+int q6asm_cmd(struct audio_client *ac, uint32_t stream_id,  int cmd);
+int q6asm_cmd_nowait(struct audio_client *ac, uint32_t stream_id,  int cmd);
 int q6asm_get_session_id(struct audio_client *ac);
 int q6asm_map_memory_regions(unsigned int dir,
 			     struct audio_client *ac,