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ASoC: max98090: exit workaround earlier if PLL is locked 

According to the datasheet, PLL lock time typically takes 2 msec and
at most takes 7 msec.

Check the lock status every 1 msec and exit the workaround if PLL is
locked.

Signed-off-by: Tzung-Bi Shih <tzungbi@google.com>
Link: https://lore.kernel.org/r/20191122073114.219945-3-tzungbi@google.com
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Tzung-Bi Shih 2019-11-22 15:31:13 +08:00 committed by Mark Brown
parent acb874a7c0
commit 6f49919d11
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 12 additions and 2 deletions
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12
sound/soc/codecs/max98090.c
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@ -2108,6 +2108,8 @@ static void max98090_pll_work(struct work_struct *work)
struct max98090_priv *max98090 =
container_of(work, struct max98090_priv, pll_work);
struct snd_soc_component *component = max98090->component;
unsigned int pll;
int i;
if (!snd_soc_component_is_active(component))
return;
@ -2127,8 +2129,16 @@ static void max98090_pll_work(struct work_struct *work)
snd_soc_component_update_bits(component, M98090_REG_DEVICE_SHUTDOWN,
M98090_SHDNN_MASK, M98090_SHDNN_MASK);
for (i = 0; i < 10; ++i) {
/* Give PLL time to lock */
msleep(10);
usleep_range(1000, 1200);
/* Check lock status */
pll = snd_soc_component_read32(
component, M98090_REG_DEVICE_STATUS);
if (!(pll & M98090_ULK_MASK))
break;
}
}
static void max98090_jack_work(struct work_struct *work)