ASoC: Report errors when we have a WM8962 IRQ and don't get FLL lock

We really should be getting the interrupt - if we don't get one it's very
likely that the configuration is incorrect and audio will fail. Also
increase the timeout substantially in this case for safety.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>

diff --git a/sound/soc/codecs/wm8962.c b/sound/soc/codecs/wm8962.c
index b0cb436..8493e33 100644 (file)
--- a/sound/soc/codecs/wm8962.c
+++ b/sound/soc/codecs/wm8962.c
@@ -2186,6 +2186,8 @@ static int sysclk_event(struct snd_soc_dapm_widget *w,
                        struct snd_kcontrol *kcontrol, int event)
 {
        struct snd_soc_codec *codec = w->codec;
+       struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec);
+       unsigned long timeout;
        int src;
        int fll;
 
@@ -2205,9 +2207,19 @@ static int sysclk_event(struct snd_soc_dapm_widget *w,
 
        switch (event) {
        case SND_SOC_DAPM_PRE_PMU:
-               if (fll)
+               if (fll) {
                        snd_soc_update_bits(codec, WM8962_FLL_CONTROL_1,
                                            WM8962_FLL_ENA, WM8962_FLL_ENA);
+                       if (wm8962->irq) {
+                               timeout = msecs_to_jiffies(5);
+                               timeout = wait_for_completion_timeout(&wm8962->fll_lock,
+                                                                     timeout);
+
+                               if (timeout == 0)
+                                       dev_err(codec->dev,
+                                               "Timed out starting FLL\n");
+                       }
+               }
                break;
 
        case SND_SOC_DAPM_POST_PMD:
@@ -3263,16 +3275,31 @@ static int wm8962_set_fll(struct snd_soc_codec *codec, int fll_id, int source,
 
        dev_dbg(codec->dev, "FLL configured for %dHz->%dHz\n", Fref, Fout);
 
-       /* This should be a massive overestimate */
-       timeout = msecs_to_jiffies(1);
+       ret = 0;
+
+       if (fll1 & WM8962_FLL_ENA) {
+               /* This should be a massive overestimate but go even
+                * higher if we'll error out
+                */
+               if (wm8962->irq)
+                       timeout = msecs_to_jiffies(5);
+               else
+                       timeout = msecs_to_jiffies(1);
+
+               timeout = wait_for_completion_timeout(&wm8962->fll_lock,
+                                                     timeout);
 
-       wait_for_completion_timeout(&wm8962->fll_lock, timeout);
+               if (timeout == 0 && wm8962->irq) {
+                       dev_err(codec->dev, "FLL lock timed out");
+                       ret = -ETIMEDOUT;
+               }
+       }
 
        wm8962->fll_fref = Fref;
        wm8962->fll_fout = Fout;
        wm8962->fll_src = source;
 
-       return 0;
+       return ret;
 }
 
 static int wm8962_mute(struct snd_soc_dai *dai, int mute)