| Message ID | 20230713193905.347588-1-fido_max@inbox.ru (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | ASoC: simple-card: add trigger-stop entry parser | expand |
Hi Maxim Thank you for your patch > It may be useful to specify trigger-stop for some DMA-based simple > audio card. So add this "trigger-stop" device tree entry parser. > > Signed-off-by: Maxim Kochetkov <fido_max@inbox.ru> > --- (snip) > + const char *str; > + struct { > + char *name; > + unsigned int val; > + } of_trigger_table[] = { > + { "default", SND_SOC_TRIGGER_ORDER_DEFAULT }, > + { "ldc", SND_SOC_TRIGGER_ORDER_LDC }, > + }; (snip) > + ret = of_property_read_string(np, "trigger-stop", &str); The name of "LDC" is from initials of "Link -> DAI -> Component". Thus, people want to know what does it mean. You need to update DT doc/yaml too :) Or maybe like this ? // 0 : Link // 1 : DAI // 2 : Component trigger-stop = <0, 1, 2>; // default trigger-stop = <0, 2, 1>; // LDC And please add paired "trigger-start" or add comment like /* ADD .trigger-start here */ or something. Unbalanced implementation is very confusable. Thank you for your help !! Best regards --- Kuninori Morimoto
diff --git a/sound/soc/generic/simple-card.c b/sound/soc/generic/simple-card.c index a78babf44f38..86df7d326068 100644 --- a/sound/soc/generic/simple-card.c +++ b/sound/soc/generic/simple-card.c @@ -145,8 +145,27 @@ static int simple_parse_node(struct asoc_simple_priv *priv, struct snd_soc_dai_link_component *dlc; struct asoc_simple_dai *dai; int ret; + const char *str; + struct { + char *name; + unsigned int val; + } of_trigger_table[] = { + { "default", SND_SOC_TRIGGER_ORDER_DEFAULT }, + { "ldc", SND_SOC_TRIGGER_ORDER_LDC }, + }; + if (cpu) { + ret = of_property_read_string(np, "trigger-stop", &str); + if (ret == 0) { + for (int i = 0; i < ARRAY_SIZE(of_trigger_table); i++) { + if (strcmp(str, of_trigger_table[i].name) == 0) { + dai_link->trigger_stop = of_trigger_table[i].val; + break; + } + } + } + dlc = asoc_link_to_cpu(dai_link, 0); dai = simple_props_to_dai_cpu(dai_props, 0); } else {
It may be useful to specify trigger-stop for some DMA-based simple audio card. So add this "trigger-stop" device tree entry parser. Signed-off-by: Maxim Kochetkov <fido_max@inbox.ru> --- sound/soc/generic/simple-card.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+)