---

yaml
---
r: 270842
b: refs/heads/master
c: ba896ed
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 3a53d827292b657afcb73495cac139371cb157e1
+refs/heads/master: ba896ede9a9a54a9114ee2a4fe534328078c6b02

trunk/sound/soc/codecs/wm5100.c

@@ -26,6 +26,7 @@
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
 #include <sound/soc.h>
+#include <sound/jack.h>
 #include <sound/initval.h>
 #include <sound/tlv.h>
 #include <sound/wm5100.h>
@@ -68,6 +69,11 @@ struct wm5100_priv {
 
 	bool out_ena[2];
 
+	struct snd_soc_jack *jack;
+	bool jack_detecting;
+	bool jack_mic;
+	int jack_mode;
+
 	struct wm5100_fll fll[2];
 
 	struct wm5100_pdata pdata;
@@ -2113,6 +2119,159 @@ static int wm5100_dig_vu[] = {
 	WM5100_DAC_DIGITAL_VOLUME_6R,
 };
 
+static void wm5100_set_detect_mode(struct snd_soc_codec *codec, int the_mode)
+{
+	struct wm5100_priv *wm5100 = snd_soc_codec_get_drvdata(codec);
+	struct wm5100_jack_mode *mode = &wm5100->pdata.jack_modes[the_mode];
+
+	BUG_ON(the_mode >= ARRAY_SIZE(wm5100->pdata.jack_modes));
+
+	gpio_set_value_cansleep(wm5100->pdata.hp_pol, mode->hp_pol);
+	snd_soc_update_bits(codec, WM5100_ACCESSORY_DETECT_MODE_1,
+			    WM5100_ACCDET_BIAS_SRC_MASK |
+			    WM5100_ACCDET_SRC,
+			    (mode->bias << WM5100_ACCDET_BIAS_SRC_SHIFT) |
+			    mode->micd_src << WM5100_ACCDET_SRC_SHIFT);
+
+	wm5100->jack_mode = the_mode;
+
+	dev_dbg(codec->dev, "Set microphone polarity to %d\n",
+		wm5100->jack_mode);
+}
+
+static void wm5100_micd_irq(struct snd_soc_codec *codec)
+{
+	struct wm5100_priv *wm5100 = snd_soc_codec_get_drvdata(codec);
+	int val;
+
+	val = snd_soc_read(codec, WM5100_MIC_DETECT_3);
+
+	dev_dbg(codec->dev, "Microphone event: %x\n", val);
+
+	if (!(val & WM5100_ACCDET_VALID)) {
+		dev_warn(codec->dev, "Microphone detection state invalid\n");
+		return;
+	}
+
+	/* No accessory, reset everything and report removal */
+	if (!(val & WM5100_ACCDET_STS)) {
+		dev_dbg(codec->dev, "Jack removal detected\n");
+		wm5100->jack_mic = false;
+		wm5100->jack_detecting = true;
+		snd_soc_jack_report(wm5100->jack, 0,
+				    SND_JACK_LINEOUT | SND_JACK_HEADSET |
+				    SND_JACK_BTN_0);
+
+		snd_soc_update_bits(codec, WM5100_MIC_DETECT_1,
+				    WM5100_ACCDET_RATE_MASK,
+				    WM5100_ACCDET_RATE_MASK);
+		return;
+	}
+
+	/* If the measurement is very high we've got a microphone,
+	 * either we just detected one or if we already reported then
+	 * we've got a button release event.
+	 */
+	if (val & 0x400) {
+		if (wm5100->jack_detecting) {
+			dev_dbg(codec->dev, "Microphone detected\n");
+			wm5100->jack_mic = true;
+			snd_soc_jack_report(wm5100->jack,
+					    SND_JACK_HEADSET,
+					    SND_JACK_HEADSET | SND_JACK_BTN_0);
+
+			/* Increase poll rate to give better responsiveness
+			 * for buttons */
+			snd_soc_update_bits(codec, WM5100_MIC_DETECT_1,
+					    WM5100_ACCDET_RATE_MASK,
+					    5 << WM5100_ACCDET_RATE_SHIFT);
+		} else {
+			dev_dbg(codec->dev, "Mic button up\n");
+			snd_soc_jack_report(wm5100->jack, 0, SND_JACK_BTN_0);
+		}
+
+		return;
+	}
+
+	/* If we detected a lower impedence during initial startup
+	 * then we probably have the wrong polarity, flip it.  Don't
+	 * do this for the lowest impedences to speed up detection of
+	 * plain headphones.
+	 */
+	if (wm5100->jack_detecting && (val & 0x3f8)) {
+		wm5100_set_detect_mode(codec, !wm5100->jack_mode);
+
+		return;
+	}
+
+	/* Don't distinguish between buttons, just report any low
+	 * impedence as BTN_0.
+	 */
+	if (val & 0x3fc) {
+		if (wm5100->jack_mic) {
+			dev_dbg(codec->dev, "Mic button detected\n");
+			snd_soc_jack_report(wm5100->jack, SND_JACK_BTN_0,
+					    SND_JACK_BTN_0);
+		} else if (wm5100->jack_detecting) {
+			dev_dbg(codec->dev, "Headphone detected\n");
+			snd_soc_jack_report(wm5100->jack, SND_JACK_HEADPHONE,
+					    SND_JACK_HEADPHONE);
+
+			/* Increase the detection rate a bit for
+			 * responsiveness.
+			 */
+			snd_soc_update_bits(codec, WM5100_MIC_DETECT_1,
+					    WM5100_ACCDET_RATE_MASK,
+					    7 << WM5100_ACCDET_RATE_SHIFT);
+		}
+	}
+}
+
+int wm5100_detect(struct snd_soc_codec *codec, struct snd_soc_jack *jack)
+{
+	struct wm5100_priv *wm5100 = snd_soc_codec_get_drvdata(codec);
+
+	if (jack) {
+		wm5100->jack = jack;
+		wm5100->jack_detecting = true;
+
+		wm5100_set_detect_mode(codec, 0);
+
+		/* Slowest detection rate, gives debounce for initial
+		 * detection */
+		snd_soc_update_bits(codec, WM5100_MIC_DETECT_1,
+				    WM5100_ACCDET_BIAS_STARTTIME_MASK |
+				    WM5100_ACCDET_RATE_MASK,
+				    (7 << WM5100_ACCDET_BIAS_STARTTIME_SHIFT) |
+				    WM5100_ACCDET_RATE_MASK);
+
+		/* We need the charge pump to power MICBIAS */
+		snd_soc_dapm_force_enable_pin(&codec->dapm, "CP2");
+		snd_soc_dapm_force_enable_pin(&codec->dapm, "SYSCLK");
+		snd_soc_dapm_sync(&codec->dapm);
+
+		/* We start off just enabling microphone detection - even a
+		 * plain headphone will trigger detection.
+		 */
+		snd_soc_update_bits(codec, WM5100_MIC_DETECT_1,
+				    WM5100_ACCDET_ENA, WM5100_ACCDET_ENA);
+
+		snd_soc_update_bits(codec, WM5100_INTERRUPT_STATUS_3_MASK,
+				    WM5100_IM_ACCDET_EINT, 0);
+	} else {
+		snd_soc_update_bits(codec, WM5100_INTERRUPT_STATUS_3_MASK,
+				    WM5100_IM_HPDET_EINT |
+				    WM5100_IM_ACCDET_EINT,
+				    WM5100_IM_HPDET_EINT |
+				    WM5100_IM_ACCDET_EINT);
+		snd_soc_update_bits(codec, WM5100_MIC_DETECT_1,
+				    WM5100_ACCDET_ENA, 0);
+		wm5100->jack = NULL;
+	}
+
+	return 0;
+}
+
 static irqreturn_t wm5100_irq(int irq, void *data)
 {
 	struct snd_soc_codec *codec = data;
@@ -2144,6 +2303,9 @@ static irqreturn_t wm5100_irq(int irq, void *data)
 		complete(&wm5100->fll[1].lock);
 	}
 
+	if (irq_val & WM5100_ACCDET_EINT)
+		wm5100_micd_irq(codec);
+
 	irq_val = snd_soc_read(codec, WM5100_INTERRUPT_STATUS_4);
 	if (irq_val < 0) {
 		dev_err(codec->dev, "Failed to read IRQ status 4: %d\n",

trunk/sound/soc/codecs/wm5100.h

@@ -16,6 +16,8 @@
 
 #include <sound/soc.h>
 
+int wm5100_detect(struct snd_soc_codec *codec, struct snd_soc_jack *jack);
+
 #define WM5100_CLK_AIF1     1
 #define WM5100_CLK_AIF2     2
 #define WM5100_CLK_AIF3     3