2 files changed, 61 insertions, 1 deletions

diff --git a/include/sound/wm8962.h b/include/sound/wm8962.h
index f70258e3471c..cc32aff53222 100644
--- a/include/sound/wm8962.h
+++ b/include/sound/wm8962.h
@@ -17,6 +17,8 @@
 struct wm8962_pdata {
         u32 gpio_init[WM8962_MAX_GPIO];
 
+        bool irq_active_low;
+
         bool spk_mono;   /* Speaker outputs tied together as mono */
 };
 
diff --git a/sound/soc/codecs/wm8962.c b/sound/soc/codecs/wm8962.c
index 8e5f46691379..4fa5de873c8b 100644
--- a/sound/soc/codecs/wm8962.c
+++ b/sound/soc/codecs/wm8962.c
@@ -1461,6 +1461,29 @@ static struct snd_soc_dai_driver wm8962_dai = {
         .symmetric_rates = 1,
 };
 
+static irqreturn_t wm8962_irq(int irq, void *data)
+{
+        struct snd_soc_codec *codec = data;
+        int mask;
+        int active;
+
+        mask = snd_soc_read(codec, WM8962_INTERRUPT_STATUS_2);
+
+        active = snd_soc_read(codec, WM8962_INTERRUPT_STATUS_2);
+        active &= ~mask;
+
+        if (active & WM8962_FIFOS_ERR_EINT)
+                dev_err(codec->dev, "FIFO error\n");
+
+        if (active & WM8962_TEMP_SHUT_EINT)
+                dev_crit(codec->dev, "Thermal shutdown\n");
+
+        /* Acknowledge the interrupts */
+        snd_soc_write(codec, WM8962_INTERRUPT_STATUS_2, active);
+
+        return IRQ_HANDLED;
+}
+
 #ifdef CONFIG_PM
 static int wm8962_resume(struct snd_soc_codec *codec)
 {
@@ -1632,7 +1655,9 @@ static int wm8962_probe(struct snd_soc_codec *codec)
         int ret;
         struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec);
         struct wm8962_pdata *pdata = dev_get_platdata(codec->dev);
-        int i;
+        struct i2c_client *i2c = container_of(codec->dev, struct i2c_client,
+                                              dev);
+        int i, trigger, irq_pol;
 
         wm8962->codec = codec;
 
@@ -1748,6 +1773,34 @@ static int wm8962_probe(struct snd_soc_codec *codec)
 
         wm8962_init_beep(codec);
 
+        if (i2c->irq) {
+                if (pdata && pdata->irq_active_low) {
+                        trigger = IRQF_TRIGGER_LOW;
+                        irq_pol = WM8962_IRQ_POL;
+                } else {
+                        trigger = IRQF_TRIGGER_HIGH;
+                        irq_pol = 0;
+                }
+
+                snd_soc_update_bits(codec, WM8962_INTERRUPT_CONTROL,
+                                    WM8962_IRQ_POL, irq_pol);
+
+                ret = request_threaded_irq(i2c->irq, NULL, wm8962_irq,
+                                           trigger | IRQF_ONESHOT,
+                                           "wm8962", codec);
+                if (ret != 0) {
+                        dev_err(codec->dev, "Failed to request IRQ %d: %d\n",
+                                i2c->irq, ret);
+                        /* Non-fatal */
+                } else {
+                        /* Enable error reporting IRQs by default */
+                        snd_soc_update_bits(codec,
+                                            WM8962_INTERRUPT_STATUS_2_MASK,
+                                            WM8962_TEMP_SHUT_EINT |
+                                            WM8962_FIFOS_ERR_EINT, 0);
+                }
+        }
+
         return 0;
 
 err_enable:
@@ -1762,8 +1815,13 @@ err:
 static int wm8962_remove(struct snd_soc_codec *codec)
 {
         struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec);
+        struct i2c_client *i2c = container_of(codec->dev, struct i2c_client,
+                                              dev);
         int i;
 
+        if (i2c->irq)
+                free_irq(i2c->irq, codec);
+
         wm8962_free_beep(codec);
         for (i = 0; i < ARRAY_SIZE(wm8962->supplies); i++)
                 regulator_unregister_notifier(wm8962->supplies[i].consumer,