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-rw-r--r--sound/soc/codecs/wm8994.c137
-rw-r--r--sound/soc/codecs/wm8994.h3
2 files changed, 137 insertions, 3 deletions
diff --git a/sound/soc/codecs/wm8994.c b/sound/soc/codecs/wm8994.c
index bdda0936a404..fc3dce814924 100644
--- a/sound/soc/codecs/wm8994.c
+++ b/sound/soc/codecs/wm8994.c
@@ -61,6 +61,12 @@ static int wm8994_retune_mobile_base[] = {
#define WM8994_REG_CACHE_SIZE 0x621
+struct wm8994_micdet {
+ struct snd_soc_jack *jack;
+ int det;
+ int shrt;
+};
+
/* codec private data */
struct wm8994_priv {
struct wm_hubs_data hubs;
@@ -86,6 +92,8 @@ struct wm8994_priv {
int retune_mobile_cfg[WM8994_NUM_EQ];
struct soc_enum retune_mobile_enum;
+ struct wm8994_micdet micdet[2];
+
struct wm8994_pdata *pdata;
};
@@ -3702,6 +3710,96 @@ struct snd_soc_codec_device soc_codec_dev_wm8994 = {
};
EXPORT_SYMBOL_GPL(soc_codec_dev_wm8994);
+/**
+ * wm8994_mic_detect - Enable microphone detection via the WM8994 IRQ
+ *
+ * @codec: WM8994 codec
+ * @jack: jack to report detection events on
+ * @micbias: microphone bias to detect on
+ * @det: value to report for presence detection
+ * @shrt: value to report for short detection
+ *
+ * Enable microphone detection via IRQ on the WM8994. If GPIOs are
+ * being used to bring out signals to the processor then only platform
+ * data configuration is needed for WM8903 and processor GPIOs should
+ * be configured using snd_soc_jack_add_gpios() instead.
+ *
+ * Configuration of detection levels is available via the micbias1_lvl
+ * and micbias2_lvl platform data members.
+ */
+int wm8994_mic_detect(struct snd_soc_codec *codec, struct snd_soc_jack *jack,
+ int micbias, int det, int shrt)
+{
+ struct wm8994_priv *wm8994 = codec->private_data;
+ struct wm8994_micdet *micdet;
+ int reg;
+
+ switch (micbias) {
+ case 1:
+ micdet = &wm8994->micdet[0];
+ break;
+ case 2:
+ micdet = &wm8994->micdet[1];
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ dev_dbg(codec->dev, "Configuring microphone detection on %d: %x %x\n",
+ micbias, det, shrt);
+
+ /* Store the configuration */
+ micdet->jack = jack;
+ micdet->det = det;
+ micdet->shrt = shrt;
+
+ /* If either of the jacks is set up then enable detection */
+ if (wm8994->micdet[0].jack || wm8994->micdet[1].jack)
+ reg = WM8994_MICD_ENA;
+ else
+ reg = 0;
+
+ snd_soc_update_bits(codec, WM8994_MICBIAS, WM8994_MICD_ENA, reg);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(wm8994_mic_detect);
+
+static irqreturn_t wm8994_mic_irq(int irq, void *data)
+{
+ struct wm8994_priv *priv = data;
+ struct snd_soc_codec *codec = &priv->codec;
+ int reg;
+ int report;
+
+ reg = snd_soc_read(codec, WM8994_INTERRUPT_RAW_STATUS_2);
+ if (reg < 0) {
+ dev_err(codec->dev, "Failed to read microphone status: %d\n",
+ reg);
+ return IRQ_HANDLED;
+ }
+
+ dev_dbg(codec->dev, "Microphone status: %x\n", reg);
+
+ report = 0;
+ if (reg & WM8994_MIC1_DET_STS)
+ report |= priv->micdet[0].det;
+ if (reg & WM8994_MIC1_SHRT_STS)
+ report |= priv->micdet[0].shrt;
+ snd_soc_jack_report(priv->micdet[0].jack, report,
+ priv->micdet[0].det | priv->micdet[0].shrt);
+
+ report = 0;
+ if (reg & WM8994_MIC2_DET_STS)
+ report |= priv->micdet[1].det;
+ if (reg & WM8994_MIC2_SHRT_STS)
+ report |= priv->micdet[1].shrt;
+ snd_soc_jack_report(priv->micdet[1].jack, report,
+ priv->micdet[1].det | priv->micdet[1].shrt);
+
+ return IRQ_HANDLED;
+}
+
static int wm8994_codec_probe(struct platform_device *pdev)
{
int ret;
@@ -3774,6 +3872,30 @@ static int wm8994_codec_probe(struct platform_device *pdev)
}
+ ret = wm8994_request_irq(codec->control_data, WM8994_IRQ_MIC1_DET,
+ wm8994_mic_irq, "Mic 1 detect", wm8994);
+ if (ret != 0)
+ dev_warn(&pdev->dev,
+ "Failed to request Mic1 detect IRQ: %d\n", ret);
+
+ ret = wm8994_request_irq(codec->control_data, WM8994_IRQ_MIC1_SHRT,
+ wm8994_mic_irq, "Mic 1 short", wm8994);
+ if (ret != 0)
+ dev_warn(&pdev->dev,
+ "Failed to request Mic1 short IRQ: %d\n", ret);
+
+ ret = wm8994_request_irq(codec->control_data, WM8994_IRQ_MIC2_DET,
+ wm8994_mic_irq, "Mic 2 detect", wm8994);
+ if (ret != 0)
+ dev_warn(&pdev->dev,
+ "Failed to request Mic2 detect IRQ: %d\n", ret);
+
+ ret = wm8994_request_irq(codec->control_data, WM8994_IRQ_MIC2_SHRT,
+ wm8994_mic_irq, "Mic 2 short", wm8994);
+ if (ret != 0)
+ dev_warn(&pdev->dev,
+ "Failed to request Mic2 short IRQ: %d\n", ret);
+
/* Remember if AIFnLRCLK is configured as a GPIO. This should be
* configured on init - if a system wants to do this dynamically
* at runtime we can deal with that then.
@@ -3781,7 +3903,7 @@ static int wm8994_codec_probe(struct platform_device *pdev)
ret = wm8994_reg_read(codec->control_data, WM8994_GPIO_1);
if (ret < 0) {
dev_err(codec->dev, "Failed to read GPIO1 state: %d\n", ret);
- goto err;
+ goto err_irq;
}
if ((ret & WM8994_GPN_FN_MASK) != WM8994_GP_FN_PIN_SPECIFIC) {
wm8994->lrclk_shared[0] = 1;
@@ -3793,7 +3915,7 @@ static int wm8994_codec_probe(struct platform_device *pdev)
ret = wm8994_reg_read(codec->control_data, WM8994_GPIO_6);
if (ret < 0) {
dev_err(codec->dev, "Failed to read GPIO6 state: %d\n", ret);
- goto err;
+ goto err_irq;
}
if ((ret & WM8994_GPN_FN_MASK) != WM8994_GP_FN_PIN_SPECIFIC) {
wm8994->lrclk_shared[1] = 1;
@@ -3843,7 +3965,7 @@ static int wm8994_codec_probe(struct platform_device *pdev)
ret = snd_soc_register_codec(codec);
if (ret != 0) {
dev_err(codec->dev, "Failed to register codec: %d\n", ret);
- goto err;
+ goto err_irq;
}
ret = snd_soc_register_dais(wm8994_dai, ARRAY_SIZE(wm8994_dai));
@@ -3858,6 +3980,11 @@ static int wm8994_codec_probe(struct platform_device *pdev)
err_codec:
snd_soc_unregister_codec(codec);
+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);
err:
kfree(wm8994);
return ret;
@@ -3871,6 +3998,10 @@ static int __devexit wm8994_codec_remove(struct platform_device *pdev)
wm8994_set_bias_level(codec, SND_SOC_BIAS_OFF);
snd_soc_unregister_dais(wm8994_dai, ARRAY_SIZE(wm8994_dai));
snd_soc_unregister_codec(&wm8994->codec);
+ 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);
kfree(wm8994);
wm8994_codec = NULL;
diff --git a/sound/soc/codecs/wm8994.h b/sound/soc/codecs/wm8994.h
index 0a5e1424dea0..79d5915ae4b3 100644
--- a/sound/soc/codecs/wm8994.h
+++ b/sound/soc/codecs/wm8994.h
@@ -23,4 +23,7 @@ extern struct snd_soc_dai wm8994_dai[];
#define WM8994_FLL1 1
#define WM8994_FLL2 2
+int wm8994_mic_detect(struct snd_soc_codec *codec, struct snd_soc_jack *jack,
+ int micbias, int det, int shrt);
+
#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-15 07:26:22 +0000