From: Robert Rosengren robert.rosengren@axis.com
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 --- sound/soc/fsl/fsl_spdif.c | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-)
diff --git a/sound/soc/fsl/fsl_spdif.c b/sound/soc/fsl/fsl_spdif.c index 7fc1c96929bb..1679a21ffdca 100644 --- a/sound/soc/fsl/fsl_spdif.c +++ b/sound/soc/fsl/fsl_spdif.c @@ -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 * @@ -122,6 +124,7 @@ 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_soc_dai *dai; struct platform_device *pdev; struct regmap *regmap; bool dpll_locked; @@ -223,9 +226,19 @@ static void spdif_irq_dpll_lock(struct fsl_spdif_priv *spdif_priv) locked &= SRPC_DPLL_LOCKED;
dev_dbg(&pdev->dev, "isr: Rx dpll %s \n", - locked ? "locked" : "loss lock"); + locked ? "locked" : "loss lock");
spdif_priv->dpll_locked = locked ? true : false; + + if (spdif_priv->dai) { + struct snd_soc_component *component = spdif_priv->dai->component; + struct snd_kcontrol *kctl = snd_soc_card_get_kcontrol(component->card, + RX_SAMPLE_RATE_KCONTROL); + + if (kctl) + snd_ctl_notify(component->card->snd_card, + SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id); + } }
/* Receiver found illegal symbol interrupt handler */ @@ -1197,7 +1210,7 @@ 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, @@ -1241,6 +1254,7 @@ static struct snd_kcontrol_new fsl_spdif_ctrls_rcm[] = { static int fsl_spdif_dai_probe(struct snd_soc_dai *dai) { struct fsl_spdif_priv *spdif_private = snd_soc_dai_get_drvdata(dai); + spdif_private->dai = dai;
snd_soc_dai_init_dma_data(dai, &spdif_private->dma_params_tx, &spdif_private->dma_params_rx);