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ASoC: Implement WM8350 headphone jack detection
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Mark Brown
parent
8a2cd6180f
commit
a6ba2b2dab
3 changed files with 125 additions and 0 deletions
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@ -490,6 +490,7 @@
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/*
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* R231 (0xE7) - Jack Status
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*/
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#define WM8350_JACK_L_LVL 0x0800
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#define WM8350_JACK_R_LVL 0x0400
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/*
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@ -51,10 +51,17 @@ struct wm8350_output {
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u16 mute;
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};
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struct wm8350_jack_data {
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struct snd_soc_jack *jack;
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int report;
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};
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struct wm8350_data {
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struct snd_soc_codec codec;
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struct wm8350_output out1;
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struct wm8350_output out2;
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struct wm8350_jack_data hpl;
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struct wm8350_jack_data hpr;
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struct regulator_bulk_data supplies[ARRAY_SIZE(supply_names)];
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};
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@ -1328,6 +1335,95 @@ static int wm8350_resume(struct platform_device *pdev)
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return 0;
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}
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static void wm8350_hp_jack_handler(struct wm8350 *wm8350, int irq, void *data)
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{
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struct wm8350_data *priv = data;
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u16 reg;
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int report;
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int mask;
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struct wm8350_jack_data *jack = NULL;
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switch (irq) {
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case WM8350_IRQ_CODEC_JCK_DET_L:
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jack = &priv->hpl;
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mask = WM8350_JACK_L_LVL;
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break;
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case WM8350_IRQ_CODEC_JCK_DET_R:
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jack = &priv->hpr;
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mask = WM8350_JACK_R_LVL;
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break;
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default:
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BUG();
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}
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if (!jack->jack) {
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dev_warn(wm8350->dev, "Jack interrupt called with no jack\n");
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return;
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}
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/* Debounce */
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msleep(200);
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reg = wm8350_reg_read(wm8350, WM8350_JACK_PIN_STATUS);
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if (reg & mask)
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report = jack->report;
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else
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report = 0;
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snd_soc_jack_report(jack->jack, report, jack->report);
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}
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/**
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* wm8350_hp_jack_detect - Enable headphone jack detection.
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*
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* @codec: WM8350 codec
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* @which: left or right jack detect signal
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* @jack: jack to report detection events on
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* @report: value to report
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*
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* Enables the headphone jack detection of the WM8350.
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*/
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int wm8350_hp_jack_detect(struct snd_soc_codec *codec, enum wm8350_jack which,
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struct snd_soc_jack *jack, int report)
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{
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struct wm8350_data *priv = codec->private_data;
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struct wm8350 *wm8350 = codec->control_data;
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int irq;
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int ena;
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switch (which) {
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case WM8350_JDL:
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priv->hpl.jack = jack;
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priv->hpl.report = report;
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irq = WM8350_IRQ_CODEC_JCK_DET_L;
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ena = WM8350_JDL_ENA;
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break;
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case WM8350_JDR:
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priv->hpr.jack = jack;
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priv->hpr.report = report;
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irq = WM8350_IRQ_CODEC_JCK_DET_R;
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ena = WM8350_JDR_ENA;
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break;
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default:
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return -EINVAL;
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}
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wm8350_set_bits(wm8350, WM8350_POWER_MGMT_4, WM8350_TOCLK_ENA);
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wm8350_set_bits(wm8350, WM8350_JACK_DETECT, ena);
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/* Sync status */
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wm8350_hp_jack_handler(wm8350, irq, priv);
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wm8350_unmask_irq(wm8350, irq);
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return 0;
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}
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EXPORT_SYMBOL_GPL(wm8350_hp_jack_detect);
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static struct snd_soc_codec *wm8350_codec;
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static int wm8350_probe(struct platform_device *pdev)
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@ -1381,6 +1477,13 @@ static int wm8350_probe(struct platform_device *pdev)
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wm8350_set_bits(wm8350, WM8350_ROUT2_VOLUME,
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WM8350_OUT2_VU | WM8350_OUT2R_MUTE);
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wm8350_mask_irq(wm8350, WM8350_IRQ_CODEC_JCK_DET_L);
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wm8350_mask_irq(wm8350, WM8350_IRQ_CODEC_JCK_DET_R);
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wm8350_register_irq(wm8350, WM8350_IRQ_CODEC_JCK_DET_L,
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wm8350_hp_jack_handler, priv);
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wm8350_register_irq(wm8350, WM8350_IRQ_CODEC_JCK_DET_R,
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wm8350_hp_jack_handler, priv);
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ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
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if (ret < 0) {
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dev_err(&pdev->dev, "failed to create pcms\n");
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@ -1411,8 +1514,21 @@ static int wm8350_remove(struct platform_device *pdev)
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struct snd_soc_device *socdev = platform_get_drvdata(pdev);
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struct snd_soc_codec *codec = socdev->codec;
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struct wm8350 *wm8350 = codec->control_data;
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struct wm8350_data *priv = codec->private_data;
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int ret;
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wm8350_clear_bits(wm8350, WM8350_JACK_DETECT,
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WM8350_JDL_ENA | WM8350_JDR_ENA);
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wm8350_clear_bits(wm8350, WM8350_POWER_MGMT_4, WM8350_TOCLK_ENA);
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wm8350_mask_irq(wm8350, WM8350_IRQ_CODEC_JCK_DET_L);
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wm8350_mask_irq(wm8350, WM8350_IRQ_CODEC_JCK_DET_R);
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wm8350_free_irq(wm8350, WM8350_IRQ_CODEC_JCK_DET_L);
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wm8350_free_irq(wm8350, WM8350_IRQ_CODEC_JCK_DET_R);
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priv->hpl.jack = NULL;
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priv->hpr.jack = NULL;
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/* cancel any work waiting to be queued. */
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ret = cancel_delayed_work(&codec->delayed_work);
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@ -17,4 +17,12 @@
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extern struct snd_soc_dai wm8350_dai;
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extern struct snd_soc_codec_device soc_codec_dev_wm8350;
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enum wm8350_jack {
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WM8350_JDL = 1,
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WM8350_JDR = 2,
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};
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int wm8350_hp_jack_detect(struct snd_soc_codec *codec, enum wm8350_jack which,
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struct snd_soc_jack *jack, int report);
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#endif
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