ASoC: Tune the accessory detection rates for WM8996

Use longer intervals when the microphone is not inserted to increase
robustness against leisurely insertion.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

diff --git a/sound/soc/codecs/wm8996.c b/sound/soc/codecs/wm8996.c
index 8f88f5a..da7acae 100644 (file)
--- a/sound/soc/codecs/wm8996.c
+++ b/sound/soc/codecs/wm8996.c
@@ -2572,8 +2572,10 @@ static void wm8996_micd(struct snd_soc_codec *codec)
                                    SND_JACK_BTN_0);
 
                snd_soc_update_bits(codec, WM8996_MIC_DETECT_1,
-                                   WM8996_MICD_RATE_MASK,
-                                   WM8996_MICD_RATE_MASK);
+                                   WM8996_MICD_RATE_MASK |
+                                   WM8996_MICD_BIAS_STARTTIME_MASK,
+                                   WM8996_MICD_RATE_MASK |
+                                   9 << WM8996_MICD_BIAS_STARTTIME_SHIFT);
                return;
        }
 
@@ -2590,8 +2592,10 @@ static void wm8996_micd(struct snd_soc_codec *codec)
                        /* Increase poll rate to give better responsiveness
                         * for buttons */
                        snd_soc_update_bits(codec, WM8996_MIC_DETECT_1,
-                                           WM8996_MICD_RATE_MASK,
-                                           5 << WM8996_MICD_RATE_SHIFT);
+                                           WM8996_MICD_RATE_MASK |
+                                           WM8996_MICD_BIAS_STARTTIME_MASK,
+                                           5 << WM8996_MICD_RATE_SHIFT |
+                                           7 << WM8996_MICD_BIAS_STARTTIME_SHIFT);
                } else {
                        dev_dbg(codec->dev, "Mic button up\n");
                        snd_soc_jack_report(wm8996->jack, 0, SND_JACK_BTN_0);
@@ -2639,8 +2643,10 @@ static void wm8996_micd(struct snd_soc_codec *codec)
                         * responsiveness.
                         */
                        snd_soc_update_bits(codec, WM8996_MIC_DETECT_1,
-                                           WM8996_MICD_RATE_MASK,
-                                           7 << WM8996_MICD_RATE_SHIFT);
+                                           WM8996_MICD_RATE_MASK |
+                                           WM8996_MICD_BIAS_STARTTIME_MASK,
+                                           7 << WM8996_MICD_RATE_SHIFT |
+                                           7 << WM8996_MICD_BIAS_STARTTIME_SHIFT);
                }
        }
 }