Il 17/05/23 13:15, Trevor Wu ha scritto:
There are two changes included in the patch.
First, add set_dailink_daifmt() function, so dai_fmt can be updated by
the configuration in dai-link sub node.
Second, remove codec phandle from required property in dai-link sub node.
For example, user possibly needs to update dai-format for all etdm
co-clock dai-links, but codec doesn't need to be specified in capture
dai-link for a speaker amp.
Signed-off-by: Trevor Wu <trevor.wu@xxxxxxxxxxxx>
---
.../mediatek/common/mtk-soundcard-driver.c | 49 ++++++++++++++++++-
1 file changed, 48 insertions(+), 1 deletion(-)
diff --git a/sound/soc/mediatek/common/mtk-soundcard-driver.c b/sound/soc/mediatek/common/mtk-soundcard-driver.c
index 738093451ccb..5e291092046b 100644
--- a/sound/soc/mediatek/common/mtk-soundcard-driver.c
+++ b/sound/soc/mediatek/common/mtk-soundcard-driver.c
@@ -22,7 +22,7 @@ static int set_card_codec_info(struct snd_soc_card *card,
codec_node = of_get_child_by_name(sub_node, "codec");
if (!codec_node)
- return -EINVAL;
+ return 0;
/* set card codec info */
ret = snd_soc_of_get_dai_link_codecs(dev, codec_node, dai_link);
@@ -36,6 +36,47 @@ static int set_card_codec_info(struct snd_soc_card *card,
return 0;
}
+static int set_dailink_daifmt(struct snd_soc_card *card,
+ struct device_node *sub_node,
+ struct snd_soc_dai_link *dai_link)
+{
+ unsigned int daifmt;
+ const char *str;
+ int ret;
+ struct {
+ char *name;
+ unsigned int val;
+ } of_clk_table[] = {
+ { "cpu", SND_SOC_DAIFMT_CBC_CFC },
+ { "codec", SND_SOC_DAIFMT_CBP_CFP },
+ };
+
This is an optional property and this function should not do anything if that
property is not found, so....
/*
* Check "mediatek,clk-provider" to select the clock provider
* in SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK area, if specified.
*/
if (!of_property_read_string(sub_node, "mediatek,clk-provider", &str))
return 0;
...this allows you to reduce indentation as well.
+ daifmt = snd_soc_daifmt_parse_format(sub_node, NULL);
+ if (daifmt) {
+ dai_link->dai_fmt &= SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK;
+ dai_link->dai_fmt |= daifmt;
+ }
+
+ /*
+ * check "mediatek,clk-provider = xxx"
+ * SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK area
+ */
+ ret = of_property_read_string(sub_node, "mediatek,clk-provider", &str);
+ if (ret == 0) {
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(of_clk_table); i++) {
+ if (strcmp(str, of_clk_table[i].name) == 0) {
+ dai_link->dai_fmt &= ~SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK;
+ dai_link->dai_fmt |= of_clk_table[i].val;
+ break;
+ }
+ }
+ }
+
+ return 0;
+}
+
int parse_dai_link_info(struct snd_soc_card *card)
{
struct device *dev = card->dev;
@@ -67,6 +108,12 @@ int parse_dai_link_info(struct snd_soc_card *card)
of_node_put(sub_node);
return ret;
}
+
+ ret = set_dailink_daifmt(card, sub_node, dai_link);
+ if (ret < 0) {
if (ret) {
...
}
+ of_node_put(sub_node);
+ return ret;
+ }
Regards,
Angelo
