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[2/2] ASoC: fsl_spdif: Add kctl for configuring TX validity bit

Message ID 1594112066-31297-3-git-send-email-shengjiu.wang@nxp.com (mailing list archive)
State Accepted
Commit aa3fce5cd454db551a4ea1656bab9c2bacd2d1f4
Headers show
Series ASoC: fsl_spdif: Clear the validity bit for TX | expand

Commit Message

Shengjiu Wang July 7, 2020, 8:54 a.m. UTC 
Add one kctl for configuring TX validity bit from user
space.

The type of this kctl is boolean:
on - Outgoing validity always set
off - Outgoing validity always clear

Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
---
 sound/soc/fsl/fsl_spdif.c | 47 +++++++++++++++++++++++++++++++++++----
 1 file changed, 43 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/sound/soc/fsl/fsl_spdif.c b/sound/soc/fsl/fsl_spdif.c
index 576370dc6e70..37053e8f29d0 100644
--- a/sound/soc/fsl/fsl_spdif.c
+++ b/sound/soc/fsl/fsl_spdif.c
@@ -776,8 +776,8 @@  static int fsl_spdif_vbit_info(struct snd_kcontrol *kcontrol,
 }
 
 /* Get valid good bit from interrupt status register */
-static int fsl_spdif_vbit_get(struct snd_kcontrol *kcontrol,
-				struct snd_ctl_elem_value *ucontrol)
+static int fsl_spdif_rx_vbit_get(struct snd_kcontrol *kcontrol,
+				 struct snd_ctl_elem_value *ucontrol)
 {
 	struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
 	struct fsl_spdif_priv *spdif_priv = snd_soc_dai_get_drvdata(cpu_dai);
@@ -791,6 +791,35 @@  static int fsl_spdif_vbit_get(struct snd_kcontrol *kcontrol,
 	return 0;
 }
 
+static int fsl_spdif_tx_vbit_get(struct snd_kcontrol *kcontrol,
+				 struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
+	struct fsl_spdif_priv *spdif_priv = snd_soc_dai_get_drvdata(cpu_dai);
+	struct regmap *regmap = spdif_priv->regmap;
+	u32 val;
+
+	regmap_read(regmap, REG_SPDIF_SCR, &val);
+	val = (val & SCR_VAL_MASK) >> SCR_VAL_OFFSET;
+	val = 1 - val;
+	ucontrol->value.integer.value[0] = val;
+
+	return 0;
+}
+
+static int fsl_spdif_tx_vbit_put(struct snd_kcontrol *kcontrol,
+				 struct snd_ctl_elem_value *ucontrol)
+{
+	struct snd_soc_dai *cpu_dai = snd_kcontrol_chip(kcontrol);
+	struct fsl_spdif_priv *spdif_priv = snd_soc_dai_get_drvdata(cpu_dai);
+	struct regmap *regmap = spdif_priv->regmap;
+	u32 val = (1 - ucontrol->value.integer.value[0]) << SCR_VAL_OFFSET;
+
+	regmap_update_bits(regmap, REG_SPDIF_SCR, SCR_VAL_MASK, val);
+
+	return 0;
+}
+
 /* DPLL lock information */
 static int fsl_spdif_rxrate_info(struct snd_kcontrol *kcontrol,
 				struct snd_ctl_elem_info *uinfo)
@@ -948,11 +977,21 @@  static struct snd_kcontrol_new fsl_spdif_ctrls[] = {
 	/* Valid bit error controller */
 	{
 		.iface = SNDRV_CTL_ELEM_IFACE_PCM,
-		.name = "IEC958 V-Bit Errors",
+		.name = "IEC958 RX V-Bit Errors",
 		.access = SNDRV_CTL_ELEM_ACCESS_READ |
 			SNDRV_CTL_ELEM_ACCESS_VOLATILE,
 		.info = fsl_spdif_vbit_info,
-		.get = fsl_spdif_vbit_get,
+		.get = fsl_spdif_rx_vbit_get,
+	},
+	{
+		.iface = SNDRV_CTL_ELEM_IFACE_PCM,
+		.name = "IEC958 TX V-Bit",
+		.access = SNDRV_CTL_ELEM_ACCESS_READ |
+			SNDRV_CTL_ELEM_ACCESS_WRITE |
+			SNDRV_CTL_ELEM_ACCESS_VOLATILE,
+		.info = fsl_spdif_vbit_info,
+		.get = fsl_spdif_tx_vbit_get,
+		.put = fsl_spdif_tx_vbit_put,
 	},
 	/* DPLL lock info get controller */
 	{