kevin/linux
1
Fork 0
Code

ASoC: audio-graph-card2: Introduce playback-only/capture-only DAI link flags

Browse Source 
We need this to support MICFIL PDM found on i.MX8MP where the DAI link
supports only capture direction.

Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
Link: https://msgid.link/r/20231128081119.106360-2-daniel.baluta@oss.nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Daniel Baluta 2023-11-28 10:11:18 +02:00 committed by Mark Brown
parent 6475b8e182
commit d29351e8c2
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
3 changed files with 28 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
include/sound/simple_card_utils.h
View File

@ -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);
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,

6
sound/soc/generic/audio-graph-card2.c
View File

@ -760,6 +760,7 @@ static void graph_link_init(struct simple_util_priv *priv,
struct device_node *ep;
struct device_node *ports;
unsigned int daifmt = 0, daiclk = 0;
bool playback_only = 0, capture_only = 0;
unsigned int bit_frame = 0;
if (graph_lnk_is_multi(port)) {
@ -798,6 +799,11 @@ static void graph_link_init(struct simple_util_priv *priv,
if (is_cpu_node)
daiclk = snd_soc_daifmt_clock_provider_flipped(daiclk);
graph_util_parse_link_direction(port, &playback_only, &capture_only);
dai_link->playback_only = playback_only;
dai_link->capture_only = capture_only;
dai_link->dai_fmt = daifmt | daiclk;
dai_link->init = simple_util_dai_init;
dai_link->ops = &graph_ops;

19
sound/soc/generic/simple-card-utils.c
View File

@ -1129,6 +1129,25 @@ parse_dai_end:
}
EXPORT_SYMBOL_GPL(graph_util_parse_dai);
int graph_util_parse_link_direction(struct device_node *np,
bool *playback_only, bool *capture_only)
{
bool is_playback_only = false;
bool is_capture_only = false;
is_playback_only = of_property_read_bool(np, "playback-only");
is_capture_only = of_property_read_bool(np, "capture-only");
if (is_playback_only && is_capture_only)
return -EINVAL;
*playback_only = is_playback_only;
*capture_only = is_capture_only;
return 0;
}
EXPORT_SYMBOL_GPL(graph_util_parse_link_direction);
/* Module information */
MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>");
MODULE_DESCRIPTION("ALSA SoC Simple Card Utils");