From: Guneshwor Singh guneshwor.o.singh@intel.com

rate_min and rate_max are parsed currently, some drivers may also use rates to specify PCM stream capability. So add support to parse it.

Signed-off-by: Guneshwor Singh guneshwor.o.singh@intel.com --- include/topology.h | 1 + src/topology/pcm.c | 71 +++++++++++++++++++++++++++++++++++++++++++++++ src/topology/tplg_local.h | 20 +++++++++++++ 3 files changed, 92 insertions(+)

diff --git a/include/topology.h b/include/topology.h index ccb3a004..42d23762 100644 --- a/include/topology.h +++ b/include/topology.h @@ -534,6 +534,7 @@ extern "C" { * SectionPCMCapabilities."name" { * * formats "S24_LE,S16_LE" # Supported formats + * rates "48000" # Supported rates * rate_min "48000" # Max supported sample rate * rate_max "48000" # Min supported sample rate * channels_min "2" # Min number of channels diff --git a/src/topology/pcm.c b/src/topology/pcm.c index daef20e4..9a27a13a 100644 --- a/src/topology/pcm.c +++ b/src/topology/pcm.c @@ -20,6 +20,26 @@ #include "list.h" #include "tplg_local.h"

+#define RATE(v) [SND_PCM_RATE_##v] = #v + +static const char *const snd_pcm_rate_names[] = { + RATE(5512), + RATE(8000), + RATE(11025), + RATE(16000), + RATE(22050), + RATE(32000), + RATE(44100), + RATE(48000), + RATE(64000), + RATE(88200), + RATE(96000), + RATE(176400), + RATE(192000), + RATE(CONTINUOUS), + RATE(KNOT), +}; + struct tplg_elem *lookup_pcm_dai_stream(struct list_head *base, const char* id) { struct list_head *pos; @@ -309,6 +329,42 @@ static int split_format(struct snd_soc_tplg_stream_caps *caps, char *str) return 0; }

+static int get_rate_value(const char* name) +{ + int rate; + for (rate = 0; rate <= SND_PCM_RATE_LAST; rate++) { + if (snd_pcm_rate_names[rate] && + strcasecmp(name, snd_pcm_rate_names[rate]) == 0) { + return rate; + } + } + + return SND_PCM_RATE_UNKNOWN; +} + +static int split_rate(struct snd_soc_tplg_stream_caps *caps, char *str) +{ + char *s = NULL; + snd_pcm_rates_t rate; + int i = 0; + + s = strtok(str, ","); + while (s) { + rate = get_rate_value(s); + + if (rate == SND_PCM_RATE_UNKNOWN) { + SNDERR("error: unsupported stream rate %s\n", s); + return -EINVAL; + } + + caps->rates |= 1 << rate; + s = strtok(NULL, ", "); + i++; + } + + return 0; +} + /* Parse pcm stream capabilities */ int tplg_parse_stream_caps(snd_tplg_t *tplg, snd_config_t *cfg, void *private ATTRIBUTE_UNUSED) @@ -360,6 +416,21 @@ int tplg_parse_stream_caps(snd_tplg_t *tplg, continue; }

+ if (strcmp(id, "rates") == 0) { + s = strdup(val); + if (!s) + return -ENOMEM; + + err = split_rate(sc, s); + free(s); + + if (err < 0) + return err; + + tplg_dbg("\t\t%s: %s\n", id, val); + continue; + } + if (strcmp(id, "rate_min") == 0) { sc->rate_min = atoi(val); tplg_dbg("\t\t%s: %d\n", id, sc->rate_min); diff --git a/src/topology/tplg_local.h b/src/topology/tplg_local.h index 42e3201d..127842f4 100644 --- a/src/topology/tplg_local.h +++ b/src/topology/tplg_local.h @@ -38,6 +38,26 @@ struct tplg_ref; struct tplg_elem;

+typedef enum _snd_pcm_rates { + SND_PCM_RATE_UNKNOWN = -1, + SND_PCM_RATE_5512 = 0, + SND_PCM_RATE_8000, + SND_PCM_RATE_11025, + SND_PCM_RATE_16000, + SND_PCM_RATE_22050, + SND_PCM_RATE_32000, + SND_PCM_RATE_44100, + SND_PCM_RATE_48000, + SND_PCM_RATE_64000, + SND_PCM_RATE_88200, + SND_PCM_RATE_96000, + SND_PCM_RATE_176400, + SND_PCM_RATE_192000, + SND_PCM_RATE_CONTINUOUS = 30, + SND_PCM_RATE_KNOT = 31, + SND_PCM_RATE_LAST = SND_PCM_RATE_KNOT, +} snd_pcm_rates_t; + struct snd_tplg {

/* opaque vendor data */