Unverified Commit bc36d761 authored by Padmanabhan Rajanbabu's avatar Padmanabhan Rajanbabu Committed by Mark Brown
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ASoC: samsung: i2s: add support for FSD I2S 



Add support for enabling I2S controller on FSD platform.

FSD I2S controller is based on Exynos7 I2S controller, supporting
2CH playback/capture in I2S mode and 7.1CH playback/capture in TDM
mode.

Signed-off-by: default avatarPadmanabhan Rajanbabu <p.rajanbabu@samsung.com>
Link: https://lore.kernel.org/r/20230116103823.90757-3-p.rajanbabu@samsung.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 93d79d41

sound/soc/samsung/i2s-regs.h

+1 −0
Original line number Diff line number Diff line
@@ -132,6 +132,7 @@ 
#define EXYNOS7_MOD_RCLK_192FS	7



#define PSR_PSREN		(1 << 15)

#define PSR_PSVAL(x)		((((x) - 1) << 8) & 0x3f00)



#define FIC_TX2COUNT(x)		(((x) >>  24) & 0xf)

#define FIC_TX1COUNT(x)		(((x) >>  16) & 0xf)

sound/soc/samsung/i2s.c

+53 −0
Original line number Diff line number Diff line
@@ -50,6 +50,10 @@ struct samsung_i2s_dai_data { 
	u32 quirks;

	unsigned int pcm_rates;

	const struct samsung_i2s_variant_regs *i2s_variant_regs;

	void (*fixup_early)(struct snd_pcm_substream *substream,

					struct snd_soc_dai *dai);

	void (*fixup_late)(struct snd_pcm_substream *substream,

					struct snd_soc_dai *dai);

};



struct i2s_dai {
@@ -111,6 +115,10 @@ struct samsung_i2s_priv { 
	u32 suspend_i2spsr;



	const struct samsung_i2s_variant_regs *variant_regs;

	void (*fixup_early)(struct snd_pcm_substream *substream,

						struct snd_soc_dai *dai);

	void (*fixup_late)(struct snd_pcm_substream *substream,

						struct snd_soc_dai *dai);

	u32 quirks;



	/* The clock provider's data */
@@ -940,6 +948,10 @@ static int i2s_trigger(struct snd_pcm_substream *substream, 
	case SNDRV_PCM_TRIGGER_RESUME:

	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:

		pm_runtime_get_sync(dai->dev);



		if (priv->fixup_early)

			priv->fixup_early(substream, dai);



		spin_lock_irqsave(&priv->lock, flags);



		if (config_setup(i2s)) {
@@ -947,6 +959,9 @@ static int i2s_trigger(struct snd_pcm_substream *substream, 
			return -EINVAL;

		}



		if (priv->fixup_late)

			priv->fixup_late(substream, dai);



		if (capture)

			i2s_rxctrl(i2s, 1);

		else
@@ -1410,6 +1425,8 @@ static int samsung_i2s_probe(struct platform_device *pdev) 


	if (np) {

		priv->quirks = i2s_dai_data->quirks;

		priv->fixup_early = i2s_dai_data->fixup_early;

		priv->fixup_late = i2s_dai_data->fixup_late;

	} else {

		if (!i2s_pdata) {

			dev_err(&pdev->dev, "Missing platform data\n");
@@ -1563,6 +1580,31 @@ static int samsung_i2s_remove(struct platform_device *pdev) 
	return 0;

}



static void fsd_i2s_fixup_early(struct snd_pcm_substream *substream,

		struct snd_soc_dai *dai)

{

	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);

	struct i2s_dai *i2s = to_info(asoc_rtd_to_cpu(rtd, 0));

	struct i2s_dai *other = get_other_dai(i2s);



	if (!is_opened(other)) {

		i2s_set_sysclk(dai, SAMSUNG_I2S_CDCLK, 0, SND_SOC_CLOCK_OUT);

		i2s_set_sysclk(dai, SAMSUNG_I2S_OPCLK, 0, MOD_OPCLK_PCLK);

	}

}



static void fsd_i2s_fixup_late(struct snd_pcm_substream *substream,

		struct snd_soc_dai *dai)

{

	struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);

	struct samsung_i2s_priv *priv = snd_soc_dai_get_drvdata(dai);

	struct i2s_dai *i2s = to_info(asoc_rtd_to_cpu(rtd, 0));

	struct i2s_dai *other = get_other_dai(i2s);



	if (!is_opened(other))

		writel(PSR_PSVAL(2) | PSR_PSREN, priv->addr + I2SPSR);

}



static const struct samsung_i2s_variant_regs i2sv3_regs = {

	.bfs_off = 1,

	.rfs_off = 3,
@@ -1652,6 +1694,14 @@ static const struct samsung_i2s_dai_data i2sv5_dai_type_i2s1 __maybe_unused = { 
	.i2s_variant_regs = &i2sv5_i2s1_regs,

};



static const struct samsung_i2s_dai_data fsd_dai_type __maybe_unused = {

	.quirks = QUIRK_SEC_DAI | QUIRK_NEED_RSTCLR | QUIRK_SUPPORTS_TDM,

	.pcm_rates = SNDRV_PCM_RATE_8000_192000,

	.i2s_variant_regs = &i2sv7_regs,

	.fixup_early = fsd_i2s_fixup_early,

	.fixup_late = fsd_i2s_fixup_late,

};



static const struct platform_device_id samsung_i2s_driver_ids[] = {

	{

		.name           = "samsung-i2s",
@@ -1678,6 +1728,9 @@ static const struct of_device_id exynos_i2s_match[] = { 
	}, {

		.compatible = "samsung,exynos7-i2s1",

		.data = &i2sv5_dai_type_i2s1,

	}, {

		.compatible = "tesla,fsd-i2s",

		.data = &fsd_dai_type,

	},

	{},

};