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: Padmanabhan Rajanbabu <p.rajanbabu@xxxxxxxxxxx>
---
sound/soc/samsung/i2s-regs.h | 1 +
sound/soc/samsung/i2s.c | 57 ++++++++++++++++++++++++++++++++++++
2 files changed, 58 insertions(+)
diff --git a/sound/soc/samsung/i2s-regs.h b/sound/soc/samsung/i2s-regs.h
index b4b5d6053503..4444c857d0c0 100644
--- a/sound/soc/samsung/i2s-regs.h
+++ b/sound/soc/samsung/i2s-regs.h
@@ -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)
diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c
index 9505200f3d11..dcb5c438cb2f 100644
--- a/sound/soc/samsung/i2s.c
+++ b/sound/soc/samsung/i2s.c
@@ -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 +959,13 @@ static int i2s_trigger(struct snd_pcm_substream *substream,
return -EINVAL;
}
+ spin_unlock_irqrestore(&priv->lock, flags);
+
+ if (priv->fixup_late)
+ priv->fixup_late(substream, dai);
+
+ spin_lock_irqsave(&priv->lock, flags);
+
if (capture)
i2s_rxctrl(i2s, 1);
else
@@ -1410,6 +1429,8 @@ 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 +1584,31 @@ static int samsung_i2s_remove(struct platform_device *pdev)
return 0;
}
+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, 192, SND_SOC_CLOCK_OUT);
+ i2s_set_sysclk(dai, SAMSUNG_I2S_OPCLK, 0, MOD_OPCLK_PCLK);
+ }
+}
+
+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 +1698,14 @@ 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 +1732,9 @@ 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,
},
{},
};
--
2.17.1
