From: Kuninori Morimoto kuninori.morimoto.gx@renesas.com
snd_soc_of_parse_daifmt() parses daifmt, but bitclock/frame provider parsing part is one of headacke, because we are assuming below both cases.
A) node { bitclock-master; frame-master; ... };
B) link { bitclock-master = <&xxx>; frame-master = <&xxx>; ... };
The original was style A), and style B) was added later by commit b3ca11ff59bc ("ASoC: simple-card: Move dai-link level properties away from dai subnodes").
snd_soc_of_parse_daifmt() parses it as style A), and user need to update it to style B) if needed.
To handle it more flexibile, this patch adds new functions which separates snd_soc_of_parse_daifmt() helper function.
snd_soc_daifmt_parse_format() : for DAI format snd_soc_daifmt_parse_clock_provider_as_flag() : for style A) snd_soc_daifmt_parse_clock_provider_as_phandl() : for style B) snd_soc_daifmt_parse_clock_provider_as_bitmap() : use with _from_bitmap
Signed-off-by: Kuninori Morimoto kuninori.morimoto.gx@renesas.com --- include/sound/soc.h | 14 ++++++ sound/soc/soc-core.c | 114 +++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 128 insertions(+)
diff --git a/include/sound/soc.h b/include/sound/soc.h index 45f3da277c5d..63194a8773cd 100644 --- a/include/sound/soc.h +++ b/include/sound/soc.h @@ -1235,6 +1235,20 @@ int snd_soc_of_parse_aux_devs(struct snd_soc_card *card, const char *propname);
unsigned int snd_soc_daifmt_clock_provider_fliped(unsigned int dai_fmt); unsigned int snd_soc_daifmt_clock_provider_from_bitmap(unsigned int bit_frame); + +unsigned int snd_soc_daifmt_parse_format(struct device_node *np, const char *prefix); +unsigned int snd_soc_daifmt_parse_clock_provider_raw(struct device_node *np, + const char *prefix, + struct device_node **bitclkmaster, + struct device_node **framemaster); +#define snd_soc_daifmt_parse_clock_provider_as_bitmap(np, prefix) \ + snd_soc_daifmt_parse_clock_provider_raw(np, prefix, NULL, NULL) +#define snd_soc_daifmt_parse_clock_provider_as_phandle \ + snd_soc_daifmt_parse_clock_provider_raw +#define snd_soc_daifmt_parse_clock_provider_as_flag(np, prefix) \ + snd_soc_daifmt_clock_provider_from_bitmap( \ + snd_soc_daifmt_parse_clock_provider_as_bitmap(np, prefix)) + unsigned int snd_soc_of_parse_daifmt(struct device_node *np, const char *prefix, struct device_node **bitclkmaster, diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c index 0a8143e3fcdb..b6790d2a0447 100644 --- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -3045,6 +3045,120 @@ unsigned int snd_soc_daifmt_clock_provider_from_bitmap(unsigned int bit_frame) } EXPORT_SYMBOL_GPL(snd_soc_daifmt_clock_provider_from_bitmap);
+unsigned int snd_soc_daifmt_parse_format(struct device_node *np, + const char *prefix) +{ + int ret, i; + char prop[128]; + unsigned int format = 0; + int bit, frame; + const char *str; + struct { + char *name; + unsigned int val; + } of_fmt_table[] = { + { "i2s", SND_SOC_DAIFMT_I2S }, + { "right_j", SND_SOC_DAIFMT_RIGHT_J }, + { "left_j", SND_SOC_DAIFMT_LEFT_J }, + { "dsp_a", SND_SOC_DAIFMT_DSP_A }, + { "dsp_b", SND_SOC_DAIFMT_DSP_B }, + { "ac97", SND_SOC_DAIFMT_AC97 }, + { "pdm", SND_SOC_DAIFMT_PDM}, + { "msb", SND_SOC_DAIFMT_MSB }, + { "lsb", SND_SOC_DAIFMT_LSB }, + }; + + if (!prefix) + prefix = ""; + + /* + * check "dai-format = xxx" + * or "[prefix]format = xxx" + * SND_SOC_DAIFMT_FORMAT_MASK area + */ + ret = of_property_read_string(np, "dai-format", &str); + if (ret < 0) { + snprintf(prop, sizeof(prop), "%sformat", prefix); + ret = of_property_read_string(np, prop, &str); + } + if (ret == 0) { + for (i = 0; i < ARRAY_SIZE(of_fmt_table); i++) { + if (strcmp(str, of_fmt_table[i].name) == 0) { + format |= of_fmt_table[i].val; + break; + } + } + } + + /* + * check "[prefix]continuous-clock" + * SND_SOC_DAIFMT_CLOCK_MASK area + */ + snprintf(prop, sizeof(prop), "%scontinuous-clock", prefix); + if (of_property_read_bool(np, prop)) + format |= SND_SOC_DAIFMT_CONT; + else + format |= SND_SOC_DAIFMT_GATED; + + /* + * check "[prefix]bitclock-inversion" + * check "[prefix]frame-inversion" + * SND_SOC_DAIFMT_INV_MASK area + */ + snprintf(prop, sizeof(prop), "%sbitclock-inversion", prefix); + bit = !!of_get_property(np, prop, NULL); + + snprintf(prop, sizeof(prop), "%sframe-inversion", prefix); + frame = !!of_get_property(np, prop, NULL); + + switch ((bit << 4) + frame) { + case 0x11: + format |= SND_SOC_DAIFMT_IB_IF; + break; + case 0x10: + format |= SND_SOC_DAIFMT_IB_NF; + break; + case 0x01: + format |= SND_SOC_DAIFMT_NB_IF; + break; + default: + /* SND_SOC_DAIFMT_NB_NF is default */ + break; + } + + return format; +} +EXPORT_SYMBOL_GPL(snd_soc_daifmt_parse_format); + +unsigned int snd_soc_daifmt_parse_clock_provider_raw(struct device_node *np, + const char *prefix, + struct device_node **bitclkmaster, + struct device_node **framemaster) +{ + char prop[128]; + unsigned int bit, frame; + + if (!prefix) + prefix = ""; + + /* + * check "[prefix]bitclock-master" + * check "[prefix]frame-master" + */ + snprintf(prop, sizeof(prop), "%sbitclock-master", prefix); + bit = !!of_get_property(np, prop, NULL); + if (bit && bitclkmaster) + *bitclkmaster = of_parse_phandle(np, prop, 0); + + snprintf(prop, sizeof(prop), "%sframe-master", prefix); + frame = !!of_get_property(np, prop, NULL); + if (frame && framemaster) + *framemaster = of_parse_phandle(np, prop, 0); + + return (bit << 4) + frame; +} +EXPORT_SYMBOL_GPL(snd_soc_daifmt_parse_clock_provider_raw); + unsigned int snd_soc_of_parse_daifmt(struct device_node *np, const char *prefix, struct device_node **bitclkmaster,