int asoc_simple_card_parse_daifmt(struct device *dev,
struct device_node *node,
struct device_node *codec,
char *prefix,
unsigned int *retfmt)
{
struct device_node *bitclkmaster = NULL;
struct device_node *framemaster = NULL;
unsigned int daifmt;
daifmt = snd_soc_of_parse_daifmt(node, prefix,
&bitclkmaster, &framemaster);
daifmt &= ~SND_SOC_DAIFMT_MASTER_MASK;
if (!bitclkmaster && !framemaster) {
/*
* No dai-link level and master setting was not found from
* sound node level, revert back to legacy DT parsing and
* take the settings from codec node.
*/
dev_dbg(dev, "Revert to legacy daifmt parsing\n");
daifmt = snd_soc_of_parse_daifmt(codec, NULL, NULL, NULL) |
(daifmt & ~SND_SOC_DAIFMT_CLOCK_MASK);
} else {
if (codec == bitclkmaster)
daifmt |= (codec == framemaster) ?
SND_SOC_DAIFMT_CBM_CFM : SND_SOC_DAIFMT_CBM_CFS;
else
daifmt |= (codec == framemaster) ?
SND_SOC_DAIFMT_CBS_CFM : SND_SOC_DAIFMT_CBS_CFS;
}
of_node_put(bitclkmaster);
of_node_put(framemaster);
*retfmt = daifmt;
dev_dbg(dev, "format : %04x\n", daifmt);
return 0;
}
static int asoc_simple_card_parse_daifmt(struct device_node *node,
struct simple_card_data *priv,
struct device_node *codec,
char *prefix, int idx)
{
struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, idx);
struct device *dev = simple_priv_to_dev(priv);
struct device_node *bitclkmaster = NULL;
struct device_node *framemaster = NULL;
unsigned int daifmt;
daifmt = snd_soc_of_parse_daifmt(node, prefix,
&bitclkmaster, &framemaster);
daifmt &= ~SND_SOC_DAIFMT_MASTER_MASK;
if (strlen(prefix) && !bitclkmaster && !framemaster) {
/*
* No dai-link level and master setting was not found from
* sound node level, revert back to legacy DT parsing and
* take the settings from codec node.
*/
dev_dbg(dev, "Revert to legacy daifmt parsing\n");
daifmt = snd_soc_of_parse_daifmt(codec, NULL, NULL, NULL) |
(daifmt & ~SND_SOC_DAIFMT_CLOCK_MASK);
} else {
if (codec == bitclkmaster)
daifmt |= (codec == framemaster) ?
SND_SOC_DAIFMT_CBM_CFM : SND_SOC_DAIFMT_CBM_CFS;
else
daifmt |= (codec == framemaster) ?
SND_SOC_DAIFMT_CBS_CFM : SND_SOC_DAIFMT_CBS_CFS;
}
dai_link->dai_fmt = daifmt;
of_node_put(bitclkmaster);
of_node_put(framemaster);
return 0;
}
/*
Get sound card infos:
audio-codec
i2s-controller
format
continuous-clock
bitclock-inversion
frame-inversion
bitclock-master
frame-master
Get audio-codec and i2s-controller in this fun,
and get oher infos in fun snd_soc_of_parse_daifmt().
Set in dts:
dais {
dai0 {
audio-codec = <&codec_of_node>;
i2s-controller = <&cpu_of_node>;
format = "i2s";
//continuous-clock;
//bitclock-inversion;
//frame-inversion;
//bitclock-master;
//frame-master;
};
dai1 {
audio-codec = <&codec_of_node>;
i2s-controller = <&cpu_of_node>;
format = "dsp_a";
//continuous-clock;
bitclock-inversion;
//frame-inversion;
//bitclock-master;
//frame-master;
};
};
*/
int rockchip_of_get_sound_card_info_(struct snd_soc_card *card,
bool is_need_fmt)
{
struct device_node *dai_node, *child_dai_node;
int dai_num;
dai_node = of_get_child_by_name(card->dev->of_node, "dais");
if (!dai_node) {
dev_err(card->dev, "%s() Can not get child: dais\n",
__func__);
return -EINVAL;
}
dai_num = 0;
for_each_child_of_node(dai_node, child_dai_node) {
if (is_need_fmt) {
card->dai_link[dai_num].dai_fmt =
snd_soc_of_parse_daifmt(child_dai_node, NULL);
if ((card->dai_link[dai_num].dai_fmt &
SND_SOC_DAIFMT_MASTER_MASK) == 0) {
dev_err(card->dev,
"Property 'format' missing or invalid\n");
return -EINVAL;
}
}
card->dai_link[dai_num].codec_name = NULL;
card->dai_link[dai_num].cpu_dai_name = NULL;
card->dai_link[dai_num].platform_name = NULL;
card->dai_link[dai_num].codec_of_node = of_parse_phandle(
child_dai_node,
"audio-codec", 0);
if (!card->dai_link[dai_num].codec_of_node) {
dev_err(card->dev,
"Property 'audio-codec' missing or invalid\n");
return -EINVAL;
}
card->dai_link[dai_num].cpu_of_node = of_parse_phandle(
child_dai_node,
"i2s-controller", 0);
if (!card->dai_link[dai_num].cpu_of_node) {
dev_err(card->dev,
"Property 'i2s-controller' missing or invalid\n");
return -EINVAL;
}
card->dai_link[dai_num].platform_of_node =
card->dai_link[dai_num].cpu_of_node;
if (++dai_num >= card->num_links)
break;
}
if (dai_num < card->num_links) {
dev_err(card->dev, "%s() Can not get enough property for dais, dai: %d, max dai num: %d\n",
__func__, dai_num, card->num_links);
return -EINVAL;
}
return 0;
}
} else {
clk = of_clk_get(args.np, 0);
if (!IS_ERR(clk))
dai->sysclk = clk_get_rate(clk);
}
return 0;
}
static int asoc_s;
struct device *dev = simple_priv_to_dev(priv);
struct device_node *bitclkmaster = NULL;
struct device_node *framemaster = NULL;
unsigned int daifmt;
daifmt = snd_soc_of_parse_daifmt(node, prefix,
&bitclkmaster, &framemaster);
daifmt &= ~SND_SOC_DAIFMT_MASTER_MASK;
if (strlen(prefix) && !bitclkmaster && !framemaster) {
/*
* No dai-link level and master setting was not found from
* sound node level, revert back to legacy DT parsing and
* take the settings from codec node.
*/
dev_dbg(dev, "Revert to legacy daifmt parsing\n");
daifmt = snd_soc_of_parse_daifmt(codec, NULL, NULL, NULL) |
(daifmt & ~SND_SOC_DAIFMT_CLOCK_MASK);
} else {
if (codec == bitclkmaster)
daifmt |= (codec == framemaster) ?
static int asoc_simple_card_dai_link_of(struct device_node *node,
struct simple_card_data *priv,
int idx,
bool is_top_level_node)
{
struct device *dev = simple_priv_to_dev(priv);
struct snd_soc_dai_link *dai_link = simple_priv_to_link(priv, idx);
struct simple_dai_props *dai_props = simple_priv_to_props(priv, idx);
struct device_node *np = NULL;
struct device_node *bitclkmaster = NULL;
struct device_node *framemaster = NULL;
unsigned int daifmt;
char *name;
char prop[128];
char *prefix = "";
int ret, cpu_args;
/* For single DAI link & old style of DT node */
if (is_top_level_node)
prefix = "simple-audio-card,";
daifmt = snd_soc_of_parse_daifmt(node, prefix,
&bitclkmaster, &framemaster);
daifmt &= ~SND_SOC_DAIFMT_MASTER_MASK;
snprintf(prop, sizeof(prop), "%scpu", prefix);
np = of_get_child_by_name(node, prop);
if (!np) {
ret = -EINVAL;
dev_err(dev, "%s: Can't find %s DT node\n", __func__, prop);
goto dai_link_of_err;
}
ret = asoc_simple_card_sub_parse_of(np, &dai_props->cpu_dai,
&dai_link->cpu_of_node,
&dai_link->cpu_dai_name,
&cpu_args);
if (ret < 0)
goto dai_link_of_err;
dai_props->cpu_dai.fmt = daifmt;
switch (((np == bitclkmaster) << 4) | (np == framemaster)) {
case 0x11:
dai_props->cpu_dai.fmt |= SND_SOC_DAIFMT_CBS_CFS;
break;
case 0x10:
dai_props->cpu_dai.fmt |= SND_SOC_DAIFMT_CBS_CFM;
break;
case 0x01:
dai_props->cpu_dai.fmt |= SND_SOC_DAIFMT_CBM_CFS;
break;
default:
dai_props->cpu_dai.fmt |= SND_SOC_DAIFMT_CBM_CFM;
break;
}
of_node_put(np);
snprintf(prop, sizeof(prop), "%scodec", prefix);
np = of_get_child_by_name(node, prop);
if (!np) {
ret = -EINVAL;
dev_err(dev, "%s: Can't find %s DT node\n", __func__, prop);
goto dai_link_of_err;
}
ret = asoc_simple_card_sub_parse_of(np, &dai_props->codec_dai,
&dai_link->codec_of_node,
&dai_link->codec_dai_name, NULL);
if (ret < 0)
goto dai_link_of_err;
if (strlen(prefix) && !bitclkmaster && !framemaster) {
/*
* No DAI link level and master setting was found
* from sound node level, revert back to legacy DT
* parsing and take the settings from codec node.
*/
dev_dbg(dev, "%s: Revert to legacy daifmt parsing\n",
__func__);
dai_props->cpu_dai.fmt = dai_props->codec_dai.fmt =
snd_soc_of_parse_daifmt(np, NULL, NULL, NULL) |
(daifmt & ~SND_SOC_DAIFMT_CLOCK_MASK);
} else {
dai_props->codec_dai.fmt = daifmt;
switch (((np == bitclkmaster) << 4) | (np == framemaster)) {
case 0x11:
dai_props->codec_dai.fmt |= SND_SOC_DAIFMT_CBM_CFM;
break;
case 0x10:
dai_props->codec_dai.fmt |= SND_SOC_DAIFMT_CBM_CFS;
break;
case 0x01:
dai_props->codec_dai.fmt |= SND_SOC_DAIFMT_CBS_CFM;
break;
default:
dai_props->codec_dai.fmt |= SND_SOC_DAIFMT_CBS_CFS;
break;
}
}
if (!dai_link->cpu_dai_name || !dai_link->codec_dai_name) {
ret = -EINVAL;
goto dai_link_of_err;
}
/* Simple Card assumes platform == cpu */
dai_link->platform_of_node = dai_link->cpu_of_node;
/* DAI link name is created from CPU/CODEC dai name */
name = devm_kzalloc(dev,
strlen(dai_link->cpu_dai_name) +
strlen(dai_link->codec_dai_name) + 2,
GFP_KERNEL);
sprintf(name, "%s-%s", dai_link->cpu_dai_name,
dai_link->codec_dai_name);
dai_link->name = dai_link->stream_name = name;
dai_link->ops = &asoc_simple_card_ops;
dai_link->init = asoc_simple_card_dai_init;
dev_dbg(dev, "\tname : %s\n", dai_link->stream_name);
dev_dbg(dev, "\tcpu : %s / %04x / %d\n",
dai_link->cpu_dai_name,
dai_props->cpu_dai.fmt,
dai_props->cpu_dai.sysclk);
dev_dbg(dev, "\tcodec : %s / %04x / %d\n",
dai_link->codec_dai_name,
dai_props->codec_dai.fmt,
dai_props->codec_dai.sysclk);
/*
* In soc_bind_dai_link() will check cpu name after
* of_node matching if dai_link has cpu_dai_name.
* but, it will never match if name was created by
* fmt_single_name() remove cpu_dai_name if cpu_args
* was 0. See:
* fmt_single_name()
* fmt_multiple_name()
*/
if (!cpu_args)
dai_link->cpu_dai_name = NULL;
dai_link_of_err:
if (np)
of_node_put(np);
if (bitclkmaster)
of_node_put(bitclkmaster);
if (framemaster)
of_node_put(framemaster);
return ret;
}
