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>

diff --git a/include/linux/mfd/wm8994/pdata.h b/include/linux/mfd/wm8994/pdata.h
index 9eab263..0686946 100644 (file)
--- a/include/linux/mfd/wm8994/pdata.h
+++ b/include/linux/mfd/wm8994/pdata.h
@@ -103,6 +103,11 @@ struct wm8994_pdata {
         unsigned int lineout1fb:1;
         unsigned int lineout2fb:1;
 
+       /* IRQ for microphone detection if brought out directly as a
+        * signal.
+        */
+       int micdet_irq;
+
         /* Microphone biases: 0=0.9*AVDD1 1=0.65*AVVD1 */
         unsigned int micbias1_lvl:1;
         unsigned int micbias2_lvl:1;

diff --git a/sound/soc/codecs/wm8994.c b/sound/soc/codecs/wm8994.c
index b23e910..1ad6e3d 100644 (file)
--- 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);