ASoC: Support WM8958 direct microphone detection IRQ

Allow direct routing of the WM8958 microphone detection signal to a GPIO
to be used, saving the need to demux the interrupt.

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

1 files changed, 35 insertions, 22 deletions

diff --git a/sound/soc/codecs/wm8994.c b/sound/soc/codecs/wm8994.c
index b23e91027d64..1ad6e3db7804 100644
--- a/sound/soc/codecs/wm8994.c
+++ b/sound/soc/codecs/wm8994.c
@@ -104,6 +104,7 @@ struct wm8994_priv {
         void *jack_cb_data;
         bool jack_is_mic;
         bool jack_is_video;
+        int micdet_irq;
 
         int revision;
         struct wm8994_pdata *pdata;
@@ -3102,6 +3103,12 @@ static int wm8994_codec_probe(struct snd_soc_codec *codec)
         wm8994->pdata = dev_get_platdata(codec->dev->parent);
         wm8994->codec = codec;
 
+        if (wm8994->pdata && wm8994->pdata->micdet_irq)
+                wm8994->micdet_irq = wm8994->pdata->micdet_irq;
+        else if (wm8994->pdata && wm8994->pdata->irq_base)
+                wm8994->micdet_irq = wm8994->pdata->irq_base +
+                                     WM8994_IRQ_MIC1_DET;
+
         pm_runtime_enable(codec->dev);
         pm_runtime_resume(codec->dev);
 
@@ -3150,14 +3157,17 @@ static int wm8994_codec_probe(struct snd_soc_codec *codec)
 
         switch (control->type) {
         case WM8994:
-                ret = wm8994_request_irq(codec->control_data,
-                                         WM8994_IRQ_MIC1_DET,
-                                         wm8994_mic_irq, "Mic 1 detect",
-                                         wm8994);
-                if (ret != 0)
-                        dev_warn(codec->dev,
-                                 "Failed to request Mic1 detect IRQ: %d\n",
-                                 ret);
+                if (wm8994->micdet_irq) {
+                        ret = request_threaded_irq(wm8994->micdet_irq, NULL,
+                                                   wm8994_mic_irq,
+                                                   IRQF_TRIGGER_RISING,
+                                                   "Mic1 detect",
+                                                   wm8994);
+                        if (ret != 0)
+                                dev_warn(codec->dev,
+                                         "Failed to request Mic1 detect IRQ: %d\n",
+                                         ret);
+                }
 
                 ret = wm8994_request_irq(codec->control_data,
                                          WM8994_IRQ_MIC1_SHRT,
@@ -3188,15 +3198,17 @@ static int wm8994_codec_probe(struct snd_soc_codec *codec)
                 break;
 
         case WM8958:
-                ret = wm8994_request_irq(codec->control_data,
-                                         WM8994_IRQ_MIC1_DET,
-                                         wm8958_mic_irq, "Mic detect",
-                                         wm8994);
-                if (ret != 0)
-                        dev_warn(codec->dev,
-                                 "Failed to request Mic detect IRQ: %d\n",
-                                 ret);
-                break;
+                if (wm8994->micdet_irq) {
+                        ret = request_threaded_irq(wm8994->micdet_irq, NULL,
+                                                   wm8958_mic_irq,
+                                                   IRQF_TRIGGER_RISING,
+                                                   "Mic detect",
+                                                   wm8994);
+                        if (ret != 0)
+                                dev_warn(codec->dev,
+                                         "Failed to request Mic detect IRQ: %d\n",
+                                         ret);
+                }
         }
 
         /* Remember if AIFnLRCLK is configured as a GPIO.  This should be
@@ -3328,7 +3340,8 @@ err_irq:
         wm8994_free_irq(codec->control_data, WM8994_IRQ_MIC2_SHRT, wm8994);
         wm8994_free_irq(codec->control_data, WM8994_IRQ_MIC2_DET, wm8994);
         wm8994_free_irq(codec->control_data, WM8994_IRQ_MIC1_SHRT, wm8994);
-        wm8994_free_irq(codec->control_data, WM8994_IRQ_MIC1_DET, wm8994);
+        if (wm8994->micdet_irq)
+                free_irq(wm8994->micdet_irq, wm8994);
 err:
         kfree(wm8994);
         return ret;
@@ -3345,8 +3358,8 @@ static int  wm8994_codec_remove(struct snd_soc_codec *codec)
 
         switch (control->type) {
         case WM8994:
-                wm8994_free_irq(codec->control_data, WM8994_IRQ_MIC2_SHRT,
-                                wm8994);
+                if (wm8994->micdet_irq)
+                        free_irq(wm8994->micdet_irq, wm8994);
                 wm8994_free_irq(codec->control_data, WM8994_IRQ_MIC2_DET,
                                 wm8994);
                 wm8994_free_irq(codec->control_data, WM8994_IRQ_MIC1_SHRT,
@@ -3356,8 +3369,8 @@ static int  wm8994_codec_remove(struct snd_soc_codec *codec)
                 break;
 
         case WM8958:
-                wm8994_free_irq(codec->control_data, WM8994_IRQ_MIC1_DET,
-                                wm8994);
+                if (wm8994->micdet_irq)
+                        free_irq(wm8994->micdet_irq, wm8994);
                 break;
         }
         kfree(wm8994->retune_mobile_texts);