On 08. 09. 22 15:33, robert.rosengren@axis.com wrote:
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);
I would cache the pointer to snd_kcontrol structure in spdif_priv. This lookup is expensive for the interrupt routine in my eyes.
Jaroslav