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ASoC: rcar: unregister fixed rate on ADG

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ADG is registering fixed rate clock for audio_clkout, but it had not
been unregister clock when removing.

Salvator-X board is using ak4613 driver now, and it supports
hw_constraints from commit 907cd8809e ("ASoC: ak4613: add
hw_constraint rule for Sampling Rate").
And this calculation is using input clk. This ak4613 input clock is
ADG clkout on Salvator-X.

Because ADG had not been unregister clkout when unbinding, it receives
fixed rate clk register error when re-binding.
Thus, ak4613 can't get correct input clock, and hw_constraints will be
failed after re-binding.
This means Salvator-X board can't use sound after unbind/bind.

This patch solves this issue.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Kuninori Morimoto 2017-08-02 10:26:09 +00:00 committed by Mark Brown
parent 5771a8c088
commit e3c6de4813
1 changed files with 7 additions and 0 deletions
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7
sound/soc/sh/rcar/adg.c
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@ -610,6 +610,13 @@ void rsnd_adg_remove(struct rsnd_priv *priv)
{
struct device *dev = rsnd_priv_to_dev(priv);
struct device_node *np = dev->of_node;
struct rsnd_adg *adg = priv->adg;
struct clk *clk;
int i;
for_each_rsnd_clkout(clk, adg, i)
if (adg->clkout[i])
clk_unregister_fixed_rate(adg->clkout[i]);
of_clk_del_provider(np);