struct asoc_simple_dai cpu_dai;
struct asoc_simple_dai codec_dai;
} *dai_props;
+ unsigned int mclk_fs;
struct snd_soc_dai_link dai_link[]; /* dynamically allocated */
};
+static int asoc_simple_card_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_dai *codec_dai = rtd->codec_dai;
+ struct simple_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
+ unsigned int mclk;
+ int ret = 0;
+
+ if (priv->mclk_fs) {
+ mclk = params_rate(params) * priv->mclk_fs;
+ ret = snd_soc_dai_set_sysclk(codec_dai, 0, mclk,
+ SND_SOC_CLOCK_IN);
+ }
+
+ return ret;
+}
+
+static struct snd_soc_ops asoc_simple_card_ops = {
+ .hw_params = asoc_simple_card_hw_params,
+};
+
static int __asoc_simple_card_dai_init(struct snd_soc_dai *dai,
struct asoc_simple_dai *set)
{
static int asoc_simple_card_dai_init(struct snd_soc_pcm_runtime *rtd)
{
- struct simple_card_data *priv =
- snd_soc_card_get_drvdata(rtd->card);
+ struct simple_card_data *priv = snd_soc_card_get_drvdata(rtd->card);
struct snd_soc_dai *codec = rtd->codec_dai;
struct snd_soc_dai *cpu = rtd->cpu_dai;
struct simple_dai_props *dai_props;
static int
asoc_simple_card_sub_parse_of(struct device_node *np,
- unsigned int daifmt,
struct asoc_simple_dai *dai,
const struct device_node **p_node,
const char **name)
if (ret)
return ret;
- /*
- * bitclock-inversion, frame-inversion
- * bitclock-master, frame-master
- * and specific "format" if it has
- */
- dai->fmt = snd_soc_of_parse_daifmt(np, NULL);
- dai->fmt |= daifmt;
-
/*
* dai->sysclk come from
* "clocks = <&xxx>" (if system has common clock)
return 0;
}
-static int simple_card_cpu_codec_of(struct device_node *node,
- int daifmt,
- struct snd_soc_dai_link *dai_link,
- struct simple_dai_props *dai_props)
+static int simple_card_dai_link_of(struct device_node *node,
+ struct device *dev,
+ struct snd_soc_dai_link *dai_link,
+ struct simple_dai_props *dai_props,
+ bool is_top_level_node)
{
- struct device_node *np;
+ 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 sub-node */
- ret = -EINVAL;
- np = of_get_child_by_name(node, "simple-audio-card,cpu");
- if (np) {
- ret = asoc_simple_card_sub_parse_of(np, daifmt,
- &dai_props->cpu_dai,
- &dai_link->cpu_of_node,
- &dai_link->cpu_dai_name);
- of_node_put(np);
+ 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);
+ 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);
if (ret < 0)
- return ret;
+ goto dai_link_of_err;
+
+ 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, "%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;
+ }
+ }
- /* CODEC sub-node */
- ret = -EINVAL;
- np = of_get_child_by_name(node, "simple-audio-card,codec");
- if (np) {
- ret = asoc_simple_card_sub_parse_of(np, daifmt,
- &dai_props->codec_dai,
- &dai_link->codec_of_node,
- &dai_link->codec_dai_name);
- of_node_put(np);
+ 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;
+
+ /* 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;
+
+ 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);
+
+dai_link_of_err:
+ if (np)
+ of_node_put(np);
+ if (bitclkmaster)
+ of_node_put(bitclkmaster);
+ if (framemaster)
+ of_node_put(framemaster);
return ret;
}
{
struct snd_soc_dai_link *dai_link = priv->snd_card.dai_link;
struct simple_dai_props *dai_props = priv->dai_props;
- struct device_node *np;
- char *name;
- unsigned int daifmt;
int ret;
/* parsing the card name from DT */
snd_soc_of_parse_card_name(&priv->snd_card, "simple-audio-card,name");
- /* get CPU/CODEC common format via simple-audio-card,format */
- daifmt = snd_soc_of_parse_daifmt(node, "simple-audio-card,") &
- (SND_SOC_DAIFMT_FORMAT_MASK | SND_SOC_DAIFMT_INV_MASK);
-
/* off-codec widgets */
if (of_property_read_bool(node, "simple-audio-card,widgets")) {
ret = snd_soc_of_parse_audio_simple_widgets(&priv->snd_card,
return ret;
}
- /* loop on the DAI links */
- np = NULL;
- for (;;) {
- if (multi) {
- np = of_get_next_child(node, np);
- if (!np)
- break;
+ /* Factor to mclk, used in hw_params() */
+ of_property_read_u32(node, "simple-audio-card,mclk-fs",
+ &priv->mclk_fs);
+
+ dev_dbg(dev, "New simple-card: %s\n", priv->snd_card.name ?
+ priv->snd_card.name : "");
+
+ if (multi) {
+ struct device_node *np = NULL;
+ int i;
+ for (i = 0; (np = of_get_next_child(node, np)); i++) {
+ dev_dbg(dev, "\tlink %d:\n", i);
+ ret = simple_card_dai_link_of(np, dev, dai_link + i,
+ dai_props + i, false);
+ if (ret < 0) {
+ of_node_put(np);
+ return ret;
+ }
}
-
- ret = simple_card_cpu_codec_of(multi ? np : node,
- daifmt, dai_link, dai_props);
+ } else {
+ ret = simple_card_dai_link_of(node, dev, dai_link, dai_props,
+ true);
if (ret < 0)
- goto err;
-
- /*
- * overwrite cpu_dai->fmt as its DAIFMT_MASTER bit is based on CODEC
- * while the other bits should be identical unless buggy SW/HW design.
- */
- dai_props->cpu_dai.fmt = dai_props->codec_dai.fmt;
-
- if (!dai_link->cpu_dai_name || !dai_link->codec_dai_name) {
- ret = -EINVAL;
- goto err;
- }
-
- /* simple-card assumes platform == cpu */
- dai_link->platform_of_node = dai_link->cpu_of_node;
-
- 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;
-
- if (!multi)
- break;
-
- dai_link++;
- dai_props++;
+ return ret;
}
- /* card name is created from CPU/CODEC dai name */
- dai_link = priv->snd_card.dai_link;
if (!priv->snd_card.name)
- priv->snd_card.name = dai_link->name;
-
- dev_dbg(dev, "card-name : %s\n", priv->snd_card.name);
- dev_dbg(dev, "platform : %04x\n", daifmt);
- dai_props = priv->dai_props;
- dev_dbg(dev, "cpu : %s / %04x / %d\n",
- dai_link->cpu_dai_name,
- dai_props->cpu_dai.fmt,
- dai_props->cpu_dai.sysclk);
- dev_dbg(dev, "codec : %s / %04x / %d\n",
- dai_link->codec_dai_name,
- dai_props->codec_dai.fmt,
- dai_props->codec_dai.sysclk);
+ priv->snd_card.name = priv->snd_card.dai_link->name;
return 0;
-
-err:
- of_node_put(np);
- return ret;
}
/* update the reference count of the devices nodes at end of probe */
return -EINVAL;
}
- if (!cinfo->name ||
- !cinfo->codec_dai.name ||
- !cinfo->codec ||
- !cinfo->platform ||
+ if (!cinfo->name ||
+ !cinfo->codec_dai.name ||
+ !cinfo->codec ||
+ !cinfo->platform ||
!cinfo->cpu_dai.name) {
dev_err(dev, "insufficient asoc_simple_card_info settings\n");
return -EINVAL;
static struct platform_driver asoc_simple_card = {
.driver = {
- .name = "asoc-simple-card",
+ .name = "asoc-simple-card",
.owner = THIS_MODULE,
.of_match_table = asoc_simple_of_match,
},
- .probe = asoc_simple_card_probe,
+ .probe = asoc_simple_card_probe,
};
module_platform_driver(asoc_simple_card);
projects / firefly-linux-kernel-4.4.55.git / blobdiff