Unverified Commit 20b83421 authored by John Hsu's avatar John Hsu Committed by Mark Brown
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ASoC: nau8810: automatic selecting BCLK in I2S master mode 



The driver will select correct BCLK automatically according to
BCLK and FS information in I2S master mode.

Signed-off-by: default avatarJohn Hsu <KCHSU0@nuvoton.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 709a9b8a

sound/soc/codecs/nau8810.c

+18 −0
Original line number Diff line number Diff line
@@ -667,6 +667,24 @@ static int nau8810_pcm_hw_params(struct snd_pcm_substream *substream, 
	struct snd_soc_component *component = dai->component;

	struct nau8810 *nau8810 = snd_soc_component_get_drvdata(component);

	int val_len = 0, val_rate = 0, ret = 0;

	unsigned int ctrl_val, bclk_fs, bclk_div;



	/* Select BCLK configuration if the codec as master. */

	regmap_read(nau8810->regmap, NAU8810_REG_CLOCK, &ctrl_val);

	if (ctrl_val & NAU8810_CLKIO_MASTER) {

		/* get the bclk and fs ratio */

		bclk_fs = snd_soc_params_to_bclk(params) / params_rate(params);

		if (bclk_fs <= 32)

			bclk_div = NAU8810_BCLKDIV_8;

		else if (bclk_fs <= 64)

			bclk_div = NAU8810_BCLKDIV_4;

		else if (bclk_fs <= 128)

			bclk_div = NAU8810_BCLKDIV_2;

		else

			return -EINVAL;

		regmap_update_bits(nau8810->regmap, NAU8810_REG_CLOCK,

			NAU8810_BCLKSEL_MASK, bclk_div);

	}



	switch (params_width(params)) {

	case 16: