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ASoC: fsl_spdif: add ALSA event on dpll locked

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Add an ALSA event on the RX Sample Rate controller upon the dpll locked
interrupt, making it possible for audio applications to monitor changes
in the hardware.

Signed-off-by: Robert Rosengren <robert.rosengren@axis.com>
Acked-by: Shengjiu Wang <shengjiu.wang@gmail.com>
Link: https://lore.kernel.org/r/20220912105407.3157868-1-robert.rosengren@axis.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Robert Rosengren 2022-09-12 12:54:07 +02:00 committed by Mark Brown
parent f047199e6f
commit e31a4a9320
No known key found for this signature in database
GPG key ID: 24D68B725D5487D0
1 changed files with 20 additions and 1 deletions
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21
sound/soc/fsl/fsl_spdif.c
View file

@ -44,6 +44,8 @@ static u8 srpc_dpll_locked[] = { 0x0, 0x1, 0x2, 0x3, 0x4, 0xa, 0xb };
#define DEFAULT_RXCLK_SRC 1
#define RX_SAMPLE_RATE_KCONTROL "RX Sample Rate"
/**
* struct fsl_spdif_soc_data: soc specific data
*
@ -98,6 +100,8 @@ struct spdif_mixer_control {
* @soc: SPDIF soc data
* @fsl_spdif_control: SPDIF control data
* @cpu_dai_drv: cpu dai driver
* @snd_card: sound card pointer
* @rxrate_kcontrol: kcontrol for RX Sample Rate
* @pdev: platform device pointer
* @regmap: regmap handler
* @dpll_locked: dpll lock flag
@ -122,6 +126,8 @@ struct fsl_spdif_priv {
const struct fsl_spdif_soc_data *soc;
struct spdif_mixer_control fsl_spdif_control;
struct snd_soc_dai_driver cpu_dai_drv;
struct snd_card *snd_card;
struct snd_kcontrol *rxrate_kcontrol;
struct platform_device *pdev;
struct regmap *regmap;
bool dpll_locked;
@ -226,6 +232,12 @@ static void spdif_irq_dpll_lock(struct fsl_spdif_priv *spdif_priv)
locked ? "locked" : "loss lock");
spdif_priv->dpll_locked = locked ? true : false;
if (spdif_priv->snd_card && spdif_priv->rxrate_kcontrol) {
snd_ctl_notify(spdif_priv->snd_card,
SNDRV_CTL_EVENT_MASK_VALUE,
&spdif_priv->rxrate_kcontrol->id);
}
}
/* Receiver found illegal symbol interrupt handler */
@ -1197,7 +1209,7 @@ static struct snd_kcontrol_new fsl_spdif_ctrls[] = {
/* DPLL lock info get controller */
{
.iface = SNDRV_CTL_ELEM_IFACE_PCM,
.name = "RX Sample Rate",
.name = RX_SAMPLE_RATE_KCONTROL,
.access = SNDRV_CTL_ELEM_ACCESS_READ |
SNDRV_CTL_ELEM_ACCESS_VOLATILE,
.info = fsl_spdif_rxrate_info,
@ -1251,6 +1263,13 @@ static int fsl_spdif_dai_probe(struct snd_soc_dai *dai)
snd_soc_add_dai_controls(dai, fsl_spdif_ctrls_rcm,
ARRAY_SIZE(fsl_spdif_ctrls_rcm));
spdif_private->snd_card = dai->component->card->snd_card;
spdif_private->rxrate_kcontrol = snd_soc_card_get_kcontrol(dai->component->card,
RX_SAMPLE_RATE_KCONTROL);
if (!spdif_private->rxrate_kcontrol)
dev_err(&spdif_private->pdev->dev, "failed to get %s kcontrol\n",
RX_SAMPLE_RATE_KCONTROL);
/*Clear the val bit for Tx*/
regmap_update_bits(spdif_private->regmap, REG_SPDIF_SCR,
SCR_VAL_MASK, SCR_VAL_CLEAR);