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Commit 0512615d authored by Mark Brown's avatar Mark Brown
Browse files

ASoC: wm8962: Convert interrupt handler to direct regmap usage 



Avoids potential locking issues with anything that needs the CODEC lock.

Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent d690516c

sound/soc/codecs/wm8962.c

+39 −20
Original line number Diff line number Diff line
@@ -2969,54 +2969,73 @@ static void wm8962_mic_work(struct work_struct *work) 


static irqreturn_t wm8962_irq(int irq, void *data)

{

	struct snd_soc_codec *codec = data;

	struct wm8962_priv *wm8962 = snd_soc_codec_get_drvdata(codec);

	int mask;

	int active;

	int reg;

	struct device *dev = data;

	struct wm8962_priv *wm8962 = dev_get_drvdata(dev);

	unsigned int mask;

	unsigned int active;

	int reg, ret;



	mask = snd_soc_read(codec, WM8962_INTERRUPT_STATUS_2_MASK);

	ret = regmap_read(wm8962->regmap, WM8962_INTERRUPT_STATUS_2_MASK,

			  &mask);

	if (ret != 0) {

		dev_err(dev, "Failed to read interrupt mask: %d\n",

			ret);

		return IRQ_NONE;

	}



	ret = regmap_read(wm8962->regmap, WM8962_INTERRUPT_STATUS_2, &active);

	if (ret != 0) {

		dev_err(dev, "Failed to read interrupt: %d\n", ret);

		return IRQ_NONE;

	}



	active = snd_soc_read(codec, WM8962_INTERRUPT_STATUS_2);

	active &= ~mask;



	if (!active)

		return IRQ_NONE;



	/* Acknowledge the interrupts */

	snd_soc_write(codec, WM8962_INTERRUPT_STATUS_2, active);

	ret = regmap_write(wm8962->regmap, WM8962_INTERRUPT_STATUS_2, active);

	if (ret != 0)

		dev_warn(dev, "Failed to ack interrupt: %d\n", ret);



	if (active & WM8962_FLL_LOCK_EINT) {

		dev_dbg(codec->dev, "FLL locked\n");

		dev_dbg(dev, "FLL locked\n");

		complete(&wm8962->fll_lock);

	}



	if (active & WM8962_FIFOS_ERR_EINT)

		dev_err(codec->dev, "FIFO error\n");

		dev_err(dev, "FIFO error\n");



	if (active & WM8962_TEMP_SHUT_EINT) {

		dev_crit(codec->dev, "Thermal shutdown\n");

		dev_crit(dev, "Thermal shutdown\n");



		reg = snd_soc_read(codec, WM8962_THERMAL_SHUTDOWN_STATUS);

		ret = regmap_read(wm8962->regmap,

				  WM8962_THERMAL_SHUTDOWN_STATUS,  &reg);

		if (ret != 0) {

			dev_warn(dev, "Failed to read thermal status: %d\n",

				 ret);

			reg = 0;

		}



		if (reg & WM8962_TEMP_ERR_HP)

			dev_crit(codec->dev, "Headphone thermal error\n");

			dev_crit(dev, "Headphone thermal error\n");

		if (reg & WM8962_TEMP_WARN_HP)

			dev_crit(codec->dev, "Headphone thermal warning\n");

			dev_crit(dev, "Headphone thermal warning\n");

		if (reg & WM8962_TEMP_ERR_SPK)

			dev_crit(codec->dev, "Speaker thermal error\n");

			dev_crit(dev, "Speaker thermal error\n");

		if (reg & WM8962_TEMP_WARN_SPK)

			dev_crit(codec->dev, "Speaker thermal warning\n");

			dev_crit(dev, "Speaker thermal warning\n");

	}



	if (active & (WM8962_MICSCD_EINT | WM8962_MICD_EINT)) {

		dev_dbg(codec->dev, "Microphone event detected\n");

		dev_dbg(dev, "Microphone event detected\n");



#ifndef CONFIG_SND_SOC_WM8962_MODULE

		trace_snd_soc_jack_irq(dev_name(codec->dev));

		trace_snd_soc_jack_irq(dev_name(dev));

#endif



		pm_wakeup_event(codec->dev, 300);

		pm_wakeup_event(dev, 300);



		schedule_delayed_work(&wm8962->mic_work,

				      msecs_to_jiffies(250));
@@ -3497,7 +3516,7 @@ static int wm8962_probe(struct snd_soc_codec *codec) 


		ret = request_threaded_irq(wm8962->irq, NULL, wm8962_irq,

					   trigger | IRQF_ONESHOT,

					   "wm8962", codec);

					   "wm8962", codec->dev);

		if (ret != 0) {

			dev_err(codec->dev, "Failed to request IRQ %d: %d\n",

				wm8962->irq, ret);