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Commit 054cd7f4 authored by Kuninori Morimoto's avatar Kuninori Morimoto Committed by Mark Brown
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ASoC: rsnd: care detail of SRC_BSDSR 



Driver should care more detail of SRC_BSDSR settings.
The sound includes noise without this patch
if it used SRC.

Signed-off-by: default avatarKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: default avatarMark Brown <broonie@linaro.org>
parent b8c63786

sound/soc/sh/rcar/src.c

+31 −1
Original line number Diff line number Diff line
@@ -483,15 +483,45 @@ static struct rsnd_mod_ops rsnd_src_gen1_ops = { 
static int rsnd_src_set_convert_rate_gen2(struct rsnd_mod *mod,

					  struct rsnd_dai *rdai)

{

	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);

	struct device *dev = rsnd_priv_to_dev(priv);

	struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);

	struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);

	struct rsnd_src *src = rsnd_mod_to_src(mod);

	uint ratio;

	int ret;



	/* 6 - 1/6 are very enough ratio for SRC_BSDSR */

	if (!rsnd_src_convert_rate(src))

		ratio = 0;

	else if (rsnd_src_convert_rate(src) > runtime->rate)

		ratio = 100 * rsnd_src_convert_rate(src) / runtime->rate;

	else

		ratio = 100 * runtime->rate / rsnd_src_convert_rate(src);



	if (ratio > 600) {

		dev_err(dev, "FSO/FSI ratio error\n");

		return -EINVAL;

	}



	ret = rsnd_src_set_convert_rate(mod, rdai);

	if (ret < 0)

		return ret;



	rsnd_mod_write(mod, SRC_SRCCR, 0x00011110);



	switch (rsnd_mod_id(mod)) {

	case 5:

	case 6:

	case 7:

	case 8:

		rsnd_mod_write(mod, SRC_BSDSR, 0x02400000);

		break;

	default:

		rsnd_mod_write(mod, SRC_BSDSR, 0x01800000);

		break;

	}



	rsnd_mod_write(mod, SRC_BSISR, 0x00100060);



	return 0;