int asoc_simple_card_parse_dai(struct device_node *node,
struct device_node **dai_of_node,
const char **dai_name,
const char *list_name,
const char *cells_name,
int *is_single_link)
{
struct of_phandle_args args;
int ret;
if (!node)
return 0;
/*
* Get node via "sound-dai = <&phandle port>"
* it will be used as xxx_of_node on soc_bind_dai_link()
*/
ret = of_parse_phandle_with_args(node, list_name, cells_name, 0, &args);
if (ret)
return ret;
/* Get dai->name */
if (dai_name) {
ret = snd_soc_of_get_dai_name(node, dai_name);
if (ret < 0)
return ret;
}
*dai_of_node = args.np;
if (is_single_link)
*is_single_link = !args.args_count;
return 0;
}
static int
asoc_simple_card_sub_parse_of(struct device_node *np,
struct asoc_simple_dai *dai,
struct device_node **p_node,
const char **name,
int *args_count)
{
struct of_phandle_args args;
struct clk *clk;
u32 val;
int ret;
/*
* Get node via "sound-dai = <&phandle port>"
* it will be used as xxx_of_node on soc_bind_dai_link()
*/
ret = of_parse_phandle_with_args(np, "sound-dai",
"#sound-dai-cells", 0, &args);
if (ret)
return ret;
*p_node = args.np;
if (args_count)
*args_count = args.args_count;
/* Get dai->name */
ret = snd_soc_of_get_dai_name(np, name);
if (ret < 0)
return ret;
/* Parse TDM slot */
ret = snd_soc_of_parse_tdm_slot(np, &dai->slots, &dai->slot_width);
if (ret)
return ret;
/*
* Parse dai->sysclk come from "clocks = <&xxx>"
* (if system has common clock)
* or "system-clock-frequency = <xxx>"
* or device's module clock.
*/
if (of_property_read_bool(np, "clocks")) {
clk = of_clk_get(np, 0);
if (IS_ERR(clk)) {
ret = PTR_ERR(clk);
return ret;
}
dai->sysclk = clk_get_rate(clk);
} else if (!of_property_read_u32(np, "system-clock-frequency", &val)) {
dai->sysclk = val;
} else {
clk = of_clk_get(args.np, 0);
if (!IS_ERR(clk))
dai->sysclk = clk_get_rate(clk);
}
return 0;
}
static struct apq8016_sbc_data *apq8016_sbc_parse_of(struct snd_soc_card *card)
{
struct device *dev = card->dev;
struct snd_soc_dai_link *link;
struct device_node *np, *codec, *cpu, *node = dev->of_node;
struct apq8016_sbc_data *data;
int ret, num_links;
ret = snd_soc_of_parse_card_name(card, "qcom,model");
if (ret) {
dev_err(dev, "Error parsing card name: %d\n", ret);
return ERR_PTR(ret);
}
/* DAPM routes */
if (of_property_read_bool(node, "qcom,audio-routing")) {
ret = snd_soc_of_parse_audio_routing(card,
"qcom,audio-routing");
if (ret)
return ERR_PTR(ret);
}
/* Populate links */
num_links = of_get_child_count(node);
/* Allocate the private data and the DAI link array */
data = devm_kzalloc(dev, sizeof(*data) + sizeof(*link) * num_links,
GFP_KERNEL);
if (!data)
return ERR_PTR(-ENOMEM);
card->dai_link = &data->dai_link[0];
card->num_links = num_links;
link = data->dai_link;
for_each_child_of_node(node, np) {
cpu = of_get_child_by_name(np, "cpu");
codec = of_get_child_by_name(np, "codec");
if (!cpu || !codec) {
dev_err(dev, "Can't find cpu/codec DT node\n");
return ERR_PTR(-EINVAL);
}
link->cpu_of_node = of_parse_phandle(cpu, "sound-dai", 0);
if (!link->cpu_of_node) {
dev_err(card->dev, "error getting cpu phandle\n");
return ERR_PTR(-EINVAL);
}
link->codec_of_node = of_parse_phandle(codec, "sound-dai", 0);
if (!link->codec_of_node) {
dev_err(card->dev, "error getting codec phandle\n");
return ERR_PTR(-EINVAL);
}
ret = snd_soc_of_get_dai_name(cpu, &link->cpu_dai_name);
if (ret) {
dev_err(card->dev, "error getting cpu dai name\n");
return ERR_PTR(ret);
}
ret = snd_soc_of_get_dai_name(codec, &link->codec_dai_name);
if (ret) {
dev_err(card->dev, "error getting codec dai name\n");
return ERR_PTR(ret);
}
link->platform_of_node = link->cpu_of_node;
ret = of_property_read_string(np, "link-name", &link->name);
if (ret) {
dev_err(card->dev, "error getting codec dai_link name\n");
return ERR_PTR(ret);
}
link->stream_name = link->name;
link->init = apq8016_sbc_dai_init;
link++;
}
