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| author | Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | 2021-10-12 13:54:46 +0900 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2021-10-15 16:10:38 +0100 |
| commit | 6e5f68fe3f2d35046856572fa037a5149d55a070 (patch) | |
| tree | dba200a727fe35395b91b807a9710d5d2b389d44 /include/sound | |
| parent | 52a18c291470e66a27f415b8c99136f25f55092e (diff) | |
| download | linux-6e5f68fe3f2d35046856572fa037a5149d55a070.tar.bz2 | |
ASoC: add Audio Graph Card2 driver
We already have audio-graph-card which is Of-graph base of general
sound card driver.
It is supporting DPCM connection, but was forcibly expanded.
Thus, it is very difficult to add new features on it, for example
Multi CPU/Codec support, Codec2Codec support, etc.
This patch adds more flexible new Audio Graph Card2 driver for it.
audio-graph-card and audio-graph-card2 are similar, but don't have
full compatibility.
Audio Graph Card2 supports very generic connection, but some users
want to have its own settings, for example PLL settings, etc.
For such case, it has customizing support.
In users own driver, it can use Audio Graph Card2 parsing by using
audio_graph2_parse_of(), and doing its own customizing.
Because Audio Graph Card2 is still under experimental stage,
it will indicate such warning when probing, and the DT syntax
might be changed.
Link: https://lore.kernel.org/r/87k0xszlep.wl-kuninori.morimoto.gx@renesas.com
Link: https://lore.kernel.org/r/871r8u4s6q.wl-kuninori.morimoto.gx@renesas.com
Link: https://lore.kernel.org/r/87a6mhwyqn.wl-kuninori.morimoto.gx@renesas.com
Link: https://lore.kernel.org/r/87tuitusy4.wl-kuninori.morimoto.gx@renesas.com
Link: https://lore.kernel.org/r/87a6jn56x0.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://lore.kernel.org/r/8735p6n8q1.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/sound')
| -rw-r--r-- | include/sound/graph_card.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/sound/graph_card.h b/include/sound/graph_card.h index 6f10bfb0d5ee..497d59585b2d 100644 --- a/include/sound/graph_card.h +++ b/include/sound/graph_card.h @@ -9,6 +9,21 @@ #include <sound/simple_card_utils.h> +typedef int (*GRAPH2_CUSTOM)(struct asoc_simple_priv *priv, + struct device_node *lnk, + struct link_info *li); + +struct graph2_custom_hooks { + int (*hook_pre)(struct asoc_simple_priv *priv); + int (*hook_post)(struct asoc_simple_priv *priv); + GRAPH2_CUSTOM custom_normal; +}; + int audio_graph_parse_of(struct asoc_simple_priv *priv, struct device *dev); +int audio_graph2_parse_of(struct asoc_simple_priv *priv, struct device *dev, + struct graph2_custom_hooks *hooks); + +int audio_graph2_link_normal(struct asoc_simple_priv *priv, + struct device_node *lnk, struct link_info *li); #endif /* __GRAPH_CARD_H */ |