int asoc_simple_card_parse_clk(struct device *dev,
struct device_node *node,
struct device_node *dai_of_node,
struct asoc_simple_dai *simple_dai,
const char *name)
{
struct clk *clk;
u32 val;
/*
* Parse dai->sysclk come from "clocks = <&xxx>"
* (if system has common clock)
* or "system-clock-frequency = <xxx>"
* or device's module clock.
*/
clk = devm_get_clk_from_child(dev, node, NULL);
if (!IS_ERR(clk)) {
simple_dai->sysclk = clk_get_rate(clk);
asoc_simple_card_clk_register(simple_dai, clk);
} else if (!of_property_read_u32(node, "system-clock-frequency", &val)) {
simple_dai->sysclk = val;
} else {
clk = devm_get_clk_from_child(dev, dai_of_node, NULL);
if (!IS_ERR(clk))
simple_dai->sysclk = clk_get_rate(clk);
}
dev_dbg(dev, "%s : sysclk = %d\n", name, simple_dai->sysclk);
return 0;
}
int asoc_simple_parse_clk(struct device *dev,
struct device_node *node,
struct device_node *dai_of_node,
struct asoc_simple_dai *simple_dai,
const char *dai_name,
struct snd_soc_dai_link_component *dlc)
{
struct clk *clk;
u32 val;
/*
* Use snd_soc_dai_link_component instead of legacy style.
* It is only for codec, but cpu will be supported in the future.
* see
* soc-core.c :: snd_soc_init_multicodec()
*/
if (dlc)
dai_of_node = dlc->of_node;
/*
* Parse dai->sysclk come from "clocks = <&xxx>"
* (if system has common clock)
* or "system-clock-frequency = <xxx>"
* or device's module clock.
*/
clk = devm_get_clk_from_child(dev, node, NULL);
if (!IS_ERR(clk)) {
simple_dai->sysclk = clk_get_rate(clk);
simple_dai->clk = clk;
} else if (!of_property_read_u32(node, "system-clock-frequency", &val)) {
simple_dai->sysclk = val;
} else {
clk = devm_get_clk_from_child(dev, dai_of_node, NULL);
if (!IS_ERR(clk))
simple_dai->sysclk = clk_get_rate(clk);
}
if (of_property_read_bool(node, "system-clock-direction-out"))
simple_dai->clk_direction = SND_SOC_CLOCK_OUT;
return 0;
}
