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ASoC: rsnd: use device dependency clock

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Current R-Car sound driver is using device
independent audio clock, but it is not good
design for DT support.
This patch adds device dependent clock support.
But, there are some platform which is using
independent audio clock.
It is still supported at this point,
but it will be removed soon.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Kuninori Morimoto 2014-02-07 00:53:06 -08:00 committed by Mark Brown
parent 629509c5bc
commit 8691d0748e
1 changed files with 35 additions and 5 deletions
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40
sound/soc/sh/rcar/adg.c
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@ -385,8 +385,9 @@ int rsnd_adg_probe(struct platform_device *pdev,
{
struct rsnd_adg *adg;
struct device *dev = rsnd_priv_to_dev(priv);
struct clk *clk;
struct clk *clk, *clk_orig;
int i;
bool use_old_style = false;
adg = devm_kzalloc(dev, sizeof(*adg), GFP_KERNEL);
if (!adg) {
@ -394,10 +395,39 @@ int rsnd_adg_probe(struct platform_device *pdev,
return -ENOMEM;
}
adg->clk[CLKA] = clk_get(NULL, "audio_clk_a");
adg->clk[CLKB] = clk_get(NULL, "audio_clk_b");
adg->clk[CLKC] = clk_get(NULL, "audio_clk_c");
adg->clk[CLKI] = clk_get(NULL, "audio_clk_internal");
clk_orig = clk_get(dev, NULL);
adg->clk[CLKA] = clk_get(dev, "clk_a");
adg->clk[CLKB] = clk_get(dev, "clk_b");
adg->clk[CLKC] = clk_get(dev, "clk_c");
adg->clk[CLKI] = clk_get(dev, "clk_i");
/*
* It request device dependent audio clock.
* But above all clks will indicate rsnd module clock
* if platform doesn't it
*/
for_each_rsnd_clk(clk, adg, i) {
if (clk_orig == clk) {
dev_warn(dev,
"doesn't have device dependent clock, use independent clock\n");
use_old_style = true;
break;
}
}
/*
* note:
* these exist in order to keep compatible with
* platform which has device independent audio clock,
* but will be removed soon
*/
if (use_old_style) {
adg->clk[CLKA] = clk_get(NULL, "audio_clk_a");
adg->clk[CLKB] = clk_get(NULL, "audio_clk_b");
adg->clk[CLKC] = clk_get(NULL, "audio_clk_c");
adg->clk[CLKI] = clk_get(NULL, "audio_clk_internal");
}
for_each_rsnd_clk(clk, adg, i) {
if (IS_ERR(clk)) {
dev_err(dev, "Audio clock failed\n");