diff options
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/codecs/max98090.c | 111 | ||||
| -rw-r--r-- | sound/soc/codecs/max98090.h | 3 |
2 files changed, 112 insertions, 2 deletions
diff --git a/sound/soc/codecs/max98090.c b/sound/soc/codecs/max98090.c index 4a063fa88526..f1543653a699 100644 --- a/sound/soc/codecs/max98090.c +++ b/sound/soc/codecs/max98090.c @@ -1972,6 +1972,102 @@ static int max98090_dai_digital_mute(struct snd_soc_dai *codec_dai, int mute) return 0; } +static int max98090_dai_trigger(struct snd_pcm_substream *substream, int cmd, + struct snd_soc_dai *dai) +{ + struct snd_soc_codec *codec = dai->codec; + struct max98090_priv *max98090 = snd_soc_codec_get_drvdata(codec); + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + case SNDRV_PCM_TRIGGER_RESUME: + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + if (!max98090->master && dai->active == 1) + queue_delayed_work(system_power_efficient_wq, + &max98090->pll_det_enable_work, + msecs_to_jiffies(10)); + break; + case SNDRV_PCM_TRIGGER_STOP: + case SNDRV_PCM_TRIGGER_SUSPEND: + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + if (!max98090->master && dai->active == 1) + schedule_work(&max98090->pll_det_disable_work); + break; + default: + break; + } + + return 0; +} + +static void max98090_pll_det_enable_work(struct work_struct *work) +{ + struct max98090_priv *max98090 = + container_of(work, struct max98090_priv, + pll_det_enable_work.work); + struct snd_soc_codec *codec = max98090->codec; + unsigned int status, mask; + + /* + * Clear status register in order to clear possibly already occurred + * PLL unlock. If PLL hasn't still locked, the status will be set + * again and PLL unlock interrupt will occur. + * Note this will clear all status bits + */ + regmap_read(max98090->regmap, M98090_REG_DEVICE_STATUS, &status); + + /* + * Queue jack work in case jack state has just changed but handler + * hasn't run yet + */ + regmap_read(max98090->regmap, M98090_REG_INTERRUPT_S, &mask); + status &= mask; + if (status & M98090_JDET_MASK) + queue_delayed_work(system_power_efficient_wq, + &max98090->jack_work, + msecs_to_jiffies(100)); + + /* Enable PLL unlock interrupt */ + snd_soc_update_bits(codec, M98090_REG_INTERRUPT_S, + M98090_IULK_MASK, + 1 << M98090_IULK_SHIFT); +} + +static void max98090_pll_det_disable_work(struct work_struct *work) +{ + struct max98090_priv *max98090 = + container_of(work, struct max98090_priv, pll_det_disable_work); + struct snd_soc_codec *codec = max98090->codec; + + cancel_delayed_work_sync(&max98090->pll_det_enable_work); + + /* Disable PLL unlock interrupt */ + snd_soc_update_bits(codec, M98090_REG_INTERRUPT_S, + M98090_IULK_MASK, 0); +} + +static void max98090_pll_work(struct work_struct *work) +{ + struct max98090_priv *max98090 = + container_of(work, struct max98090_priv, pll_work); + struct snd_soc_codec *codec = max98090->codec; + + if (!snd_soc_codec_is_active(codec)) + return; + + dev_info(codec->dev, "PLL unlocked\n"); + + /* Toggle shutdown OFF then ON */ + snd_soc_update_bits(codec, M98090_REG_DEVICE_SHUTDOWN, + M98090_SHDNN_MASK, 0); + msleep(10); + snd_soc_update_bits(codec, M98090_REG_DEVICE_SHUTDOWN, + M98090_SHDNN_MASK, M98090_SHDNN_MASK); + + /* Give PLL time to lock */ + msleep(10); +} + static void max98090_jack_work(struct work_struct *work) { struct max98090_priv *max98090 = container_of(work, @@ -2103,8 +2199,10 @@ static irqreturn_t max98090_interrupt(int irq, void *data) if (active & M98090_SLD_MASK) dev_dbg(codec->dev, "M98090_SLD_MASK\n"); - if (active & M98090_ULK_MASK) - dev_err(codec->dev, "M98090_ULK_MASK\n"); + if (active & M98090_ULK_MASK) { + dev_dbg(codec->dev, "M98090_ULK_MASK\n"); + schedule_work(&max98090->pll_work); + } if (active & M98090_JDET_MASK) { dev_dbg(codec->dev, "M98090_JDET_MASK\n"); @@ -2177,6 +2275,7 @@ static struct snd_soc_dai_ops max98090_dai_ops = { .set_tdm_slot = max98090_set_tdm_slot, .hw_params = max98090_dai_hw_params, .digital_mute = max98090_dai_digital_mute, + .trigger = max98090_dai_trigger, }; static struct snd_soc_dai_driver max98090_dai[] = { @@ -2258,6 +2357,11 @@ static int max98090_probe(struct snd_soc_codec *codec) max98090->jack_state = M98090_JACK_STATE_NO_HEADSET; INIT_DELAYED_WORK(&max98090->jack_work, max98090_jack_work); + INIT_DELAYED_WORK(&max98090->pll_det_enable_work, + max98090_pll_det_enable_work); + INIT_WORK(&max98090->pll_det_disable_work, + max98090_pll_det_disable_work); + INIT_WORK(&max98090->pll_work, max98090_pll_work); /* Enable jack detection */ snd_soc_write(codec, M98090_REG_JACK_DETECT, @@ -2310,6 +2414,9 @@ static int max98090_remove(struct snd_soc_codec *codec) struct max98090_priv *max98090 = snd_soc_codec_get_drvdata(codec); cancel_delayed_work_sync(&max98090->jack_work); + cancel_delayed_work_sync(&max98090->pll_det_enable_work); + cancel_work_sync(&max98090->pll_det_disable_work); + cancel_work_sync(&max98090->pll_work); return 0; } diff --git a/sound/soc/codecs/max98090.h b/sound/soc/codecs/max98090.h index cf1b6062ba8c..14427a566f41 100644 --- a/sound/soc/codecs/max98090.h +++ b/sound/soc/codecs/max98090.h @@ -1532,6 +1532,9 @@ struct max98090_priv { int irq; int jack_state; struct delayed_work jack_work; + struct delayed_work pll_det_enable_work; + struct work_struct pll_det_disable_work; + struct work_struct pll_work; struct snd_soc_jack *jack; unsigned int dai_fmt; int tdm_slots; |