The values of bclk and fsync are inverted WRT the codec. But the existing solution already works for Broadwell, see the alsa-lib config:
`alsa-lib/src/conf/topology/broadwell/broadwell.conf`
This commit provides the backwards-compatible solution to fix this misuse. This commit goes in pair with the corresponding patch for linux.
Signed-off-by: Kirill Marinushkin k.marinushkin@gmail.com Cc: Mark Brown broonie@kernel.org Cc: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Cc: Pan Xiuli xiuli.pan@linux.intel.com Cc: Liam Girdwood liam.r.girdwood@linux.intel.com Cc: alsa-devel@alsa-project.org --- include/sound/asoc.h | 16 ++++++++++++++-- src/conf/topology/broadwell/broadwell.conf | 4 ++-- src/topology/pcm.c | 20 ++++++++++++++++---- 3 files changed, 32 insertions(+), 8 deletions(-)
diff --git a/include/sound/asoc.h b/include/sound/asoc.h index 0f5d9f9a..89b00703 100644 --- a/include/sound/asoc.h +++ b/include/sound/asoc.h @@ -156,6 +156,18 @@ #define SND_SOC_TPLG_LNK_FLGBIT_SYMMETRIC_SAMPLEBITS (1 << 2) #define SND_SOC_TPLG_LNK_FLGBIT_VOICE_WAKEUP (1 << 3)
+/* DAI topology BCLK parameter + * For the backwards capability, by default codec is bclk master + */ +#define SND_SOC_TPLG_BCLK_CM 0 /* codec is bclk master */ +#define SND_SOC_TPLG_BCLK_CS 1 /* codec is bclk slave */ + +/* DAI topology FSYNC parameter + * For the backwards capability, by default codec is fsync master + */ +#define SND_SOC_TPLG_FSYNC_CM 0 /* codec is fsync master */ +#define SND_SOC_TPLG_FSYNC_CS 1 /* codec is fsync slave */ + /* * Block Header. * This header precedes all object and object arrays below. @@ -311,8 +323,8 @@ struct snd_soc_tplg_hw_config { __u8 clock_gated; /* 1 if clock can be gated to save power */ __u8 invert_bclk; /* 1 for inverted BCLK, 0 for normal */ __u8 invert_fsync; /* 1 for inverted frame clock, 0 for normal */ - __u8 bclk_master; /* 1 for master of BCLK, 0 for slave */ - __u8 fsync_master; /* 1 for master of FSYNC, 0 for slave */ + __u8 bclk_master; /* SND_SOC_TPLG_BCLK_ value */ + __u8 fsync_master; /* SND_SOC_TPLG_FSYNC_ value */ __u8 mclk_direction; /* 0 for input, 1 for output */ __le16 reserved; /* for 32bit alignment */ __le32 mclk_rate; /* MCLK or SYSCLK freqency in Hz */ diff --git a/src/conf/topology/broadwell/broadwell.conf b/src/conf/topology/broadwell/broadwell.conf index b8405d93..09fc4daa 100644 --- a/src/conf/topology/broadwell/broadwell.conf +++ b/src/conf/topology/broadwell/broadwell.conf @@ -393,8 +393,8 @@ SectionGraph."dsp" { SectionHWConfig."CodecHWConfig" { id "1" format "I2S" # physical audio format. - bclk "master" # Platform is master of bit clock - fsync "master" # platform is master of fsync + bclk "codec_slave" # platform is master of bit clock (codec is slave) + fsync "codec_slave" # platform is master of fsync (codec is slave) }
SectionLink."Codec" { diff --git a/src/topology/pcm.c b/src/topology/pcm.c index 58cee31d..d5d5e5b3 100644 --- a/src/topology/pcm.c +++ b/src/topology/pcm.c @@ -1137,8 +1137,14 @@ int tplg_parse_hw_config(snd_tplg_t *tplg, snd_config_t *cfg, if (snd_config_get_string(n, &val) < 0) return -EINVAL;
- if (!strcmp(val, "master")) - hw_cfg->bclk_master = true; + /* For backwards capability, + * "master" == "codec is slave" + */ + if (!strcmp(val, "master") || + !strcmp(val, "codec_slave")) + hw_cfg->bclk_master = SND_SOC_TPLG_BCLK_CS; + else if (!strcmp(val, "codec_master")) + hw_cfg->bclk_master = SND_SOC_TPLG_BCLK_CM; continue; }
@@ -1163,8 +1169,14 @@ int tplg_parse_hw_config(snd_tplg_t *tplg, snd_config_t *cfg, if (snd_config_get_string(n, &val) < 0) return -EINVAL;
- if (!strcmp(val, "master")) - hw_cfg->fsync_master = true; + /* For backwards capability, + * "master" == "codec is slave" + */ + if (!strcmp(val, "master") || + !strcmp(val, "codec_slave")) + hw_cfg->fsync_master = SND_SOC_TPLG_FSYNC_CS; + else if (!strcmp(val, "codec_master")) + hw_cfg->fsync_master = SND_SOC_TPLG_FSYNC_CM; continue; }