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charset="utf-8" From: Daniel Baluta We need this to signal that DAI link supports only one direction that can only be either playback or capture. --- include/sound/simple_card_utils.h | 3 +++ sound/soc/generic/audio-graph-card2.c | 6 ++++++ sound/soc/generic/simple-card-utils.c | 19 +++++++++++++++++++ 3 files changed, 28 insertions(+) diff --git a/include/sound/simple_card_utils.h b/include/sound/simple_card_= utils.h index e5da10b4c43b..ad67957b7b48 100644 --- a/include/sound/simple_card_utils.h +++ b/include/sound/simple_card_utils.h @@ -195,6 +195,9 @@ int graph_util_is_ports0(struct device_node *port); int graph_util_parse_dai(struct device *dev, struct device_node *ep, struct snd_soc_dai_link_component *dlc, int *is_single_link); =20 +int graph_util_parse_link_direction(struct device_node *np, + bool *is_playback_only, bool *is_capture_only); + #ifdef DEBUG static inline void simple_util_debug_dai(struct simple_util_priv *priv, char *name, diff --git a/sound/soc/generic/audio-graph-card2.c b/sound/soc/generic/audi= o-graph-card2.c index 7146611df730..04c2eac881c2 100644 --- a/sound/soc/generic/audio-graph-card2.c +++ b/sound/soc/generic/audio-graph-card2.c @@ -597,6 +597,7 @@ static void graph_link_init(struct simple_util_priv *pr= iv, struct device_node *ep; struct device_node *ports; unsigned int daifmt =3D 0, daiclk =3D 0; + bool playback_only =3D 0, capture_only =3D 0; unsigned int bit_frame =3D 0; =20 if (graph_lnk_is_multi(port)) { @@ -635,6 +636,11 @@ static void graph_link_init(struct simple_util_priv *p= riv, if (is_cpu_node) daiclk =3D snd_soc_daifmt_clock_provider_flipped(daiclk); =20 + graph_util_parse_link_direction(port, &playback_only, &capture_only); + + dai_link->playback_only =3D playback_only; + dai_link->capture_only =3D capture_only; + dai_link->dai_fmt =3D daifmt | daiclk; dai_link->init =3D simple_util_dai_init; dai_link->ops =3D &graph_ops; diff --git a/sound/soc/generic/simple-card-utils.c b/sound/soc/generic/simp= le-card-utils.c index cfa70a56ff0f..9006ef5e95f5 100644 --- a/sound/soc/generic/simple-card-utils.c +++ b/sound/soc/generic/simple-card-utils.c @@ -1129,6 +1129,25 @@ int graph_util_parse_dai(struct device *dev, struct = device_node *ep, } EXPORT_SYMBOL_GPL(graph_util_parse_dai); =20 +int graph_util_parse_link_direction(struct device_node *np, + bool *playback_only, bool *capture_only) +{ + bool is_playback_only =3D false; + bool is_capture_only =3D false; + + is_playback_only =3D of_property_read_bool(np, "playback-only"); + is_capture_only =3D of_property_read_bool(np, "capture-only"); + + if (is_playback_only && is_capture_only) + return -EINVAL; + + *playback_only =3D is_playback_only; + *capture_only =3D is_capture_only; + + return 0; +} +EXPORT_SYMBOL_GPL(graph_util_parse_link_direction); + /* Module information */ MODULE_AUTHOR("Kuninori Morimoto "); MODULE_DESCRIPTION("ALSA SoC Simple Card Utils"); --=20 2.25.1