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ASoC: simple-card-utils: add link-trigger-order support

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Some Sound Card might need special trigger ordering which is based on
CPU/Codec connection. It is already supported on ASoC, but Simple Audio
Card / Audio Graph Card still not support it. Let's support it.

Cc: Maxim Kochetkov <fido_max@inbox.ru>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Link: https://patch.msgid.link/87r0d2zojq.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Kuninori Morimoto 2024-06-12 06:02:33 +00:00 committed by Mark Brown
parent fafc20ded3
commit 5d9cacdccf
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2 changed files with 75 additions and 0 deletions
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4
include/sound/simple_card_utils.h
View File

@ -199,6 +199,10 @@ int graph_util_parse_dai(struct device *dev, struct device_node *ep,
void graph_util_parse_link_direction(struct device_node *np,
bool *is_playback_only, bool *is_capture_only);
void graph_util_parse_trigger_order(struct simple_util_priv *priv,
struct device_node *np,
enum snd_soc_trigger_order *trigger_start,
enum snd_soc_trigger_order *trigger_stop);
#ifdef DEBUG
static inline void simple_util_debug_dai(struct simple_util_priv *priv,

71
sound/soc/generic/simple-card-utils.c
View File

@ -4,6 +4,7 @@
//
// Copyright (c) 2016 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
#include <dt-bindings/sound/audio-graph.h>
#include <linux/clk.h>
#include <linux/gpio/consumer.h>
#include <linux/module.h>
@ -1156,6 +1157,76 @@ void graph_util_parse_link_direction(struct device_node *np,
}
EXPORT_SYMBOL_GPL(graph_util_parse_link_direction);
static enum snd_soc_trigger_order
__graph_util_parse_trigger_order(struct simple_util_priv *priv,
struct device_node *np,
const char *prop)
{
u32 val[SND_SOC_TRIGGER_SIZE];
int ret;
ret = of_property_read_u32_array(np, prop, val, SND_SOC_TRIGGER_SIZE);
if (ret == 0) {
struct device *dev = simple_priv_to_dev(priv);
u32 order = (val[0] << 8) +
(val[1] << 4) +
(val[2]);
switch (order) {
case (SND_SOC_TRIGGER_LINK << 8) +
(SND_SOC_TRIGGER_COMPONENT << 4) +
(SND_SOC_TRIGGER_DAI):
return SND_SOC_TRIGGER_ORDER_DEFAULT;
case (SND_SOC_TRIGGER_LINK << 8) +
(SND_SOC_TRIGGER_DAI << 4) +
(SND_SOC_TRIGGER_COMPONENT):
return SND_SOC_TRIGGER_ORDER_LDC;
default:
dev_err(dev, "unsupported trigger order [0x%x]\n", order);
}
}
/* SND_SOC_TRIGGER_ORDER_MAX means error */
return SND_SOC_TRIGGER_ORDER_MAX;
}
void graph_util_parse_trigger_order(struct simple_util_priv *priv,
struct device_node *np,
enum snd_soc_trigger_order *trigger_start,
enum snd_soc_trigger_order *trigger_stop)
{
static enum snd_soc_trigger_order order;
/*
* We can use it like below
*
* #include <dt-bindings/sound/audio-graph.h>
*
* link-trigger-order = <SND_SOC_TRIGGER_LINK
* SND_SOC_TRIGGER_COMPONENT
* SND_SOC_TRIGGER_DAI>;
*/
order = __graph_util_parse_trigger_order(priv, np, "link-trigger-order");
if (order < SND_SOC_TRIGGER_ORDER_MAX) {
*trigger_start = order;
*trigger_stop = order;
}
order = __graph_util_parse_trigger_order(priv, np, "link-trigger-order-start");
if (order < SND_SOC_TRIGGER_ORDER_MAX)
*trigger_start = order;
order = __graph_util_parse_trigger_order(priv, np, "link-trigger-order-stop");
if (order < SND_SOC_TRIGGER_ORDER_MAX)
*trigger_stop = order;
return;
}
EXPORT_SYMBOL_GPL(graph_util_parse_trigger_order);
/* Module information */
MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
MODULE_DESCRIPTION("ALSA SoC Simple Card Utils");