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Commit 27b6d92a authored by Mark Brown's avatar Mark Brown
Browse files

ASoC: Check that WM8996 FLL started even if we don't have the IRQ 



We can directly read the FLL lock status on WM8996 so even if we don't
have an interrupt wired up we can still verify that the FLL started
successfully.

Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: default avatarLiam Girdwood <lrg@ti.com>
parent 11323e32

sound/soc/codecs/wm8996.c

+19 −7
Original line number Diff line number Diff line
@@ -2054,7 +2054,7 @@ static int wm8996_set_fll(struct snd_soc_codec *codec, int fll_id, int source, 
	struct i2c_client *i2c = to_i2c_client(codec->dev);

	struct _fll_div fll_div;

	unsigned long timeout;

	int ret, reg;

	int ret, reg, retry;



	/* Any change? */

	if (source == wm8996->fll_src && Fref == wm8996->fll_fref &&
@@ -2141,17 +2141,29 @@ static int wm8996_set_fll(struct snd_soc_codec *codec, int fll_id, int source, 
	else

		timeout = msecs_to_jiffies(2);



	/* Allow substantially longer if we've actually got the IRQ */

	/* Allow substantially longer if we've actually got the IRQ, poll

	 * at a slightly higher rate if we don't.

	 */

	if (i2c->irq)

		timeout *= 1000;

		timeout *= 10;

	else

		timeout /= 2;



	ret = wait_for_completion_timeout(&wm8996->fll_lock, timeout);

	for (retry = 0; retry < 10; retry++) {

		ret = wait_for_completion_timeout(&wm8996->fll_lock,

						  timeout);

		if (ret != 0) {

			WARN_ON(!i2c->irq);

			break;

		}



	if (ret == 0 && i2c->irq) {

		ret = snd_soc_read(codec, WM8996_INTERRUPT_RAW_STATUS_2);

		if (ret & WM8996_FLL_LOCK_STS)

			break;

	}

	if (retry == 10) {

		dev_err(codec->dev, "Timed out waiting for FLL\n");

		ret = -ETIMEDOUT;

	} else {

		ret = 0;

	}



	dev_dbg(codec->dev, "FLL configured for %dHz->%dHz\n", Fref, Fout);