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ASoC: wm_adsp: Put DSP into low power state between loading and running 

Between when we load the DSP and when it actually starts running put the
core into a lower power state where the memory is retained but nothing
is clocked.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Charles Keepax 2016-09-26 10:15:23 +01:00 committed by Mark Brown
parent 1fa96f3fda
commit 90d19ba54b
1 changed files with 17 additions and 1 deletions
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18
sound/soc/codecs/wm_adsp.c
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@ -2259,6 +2259,11 @@ static void wm_adsp2_boot_work(struct work_struct *work)
mutex_lock(&dsp->pwr_lock);
ret = regmap_update_bits(dsp->regmap, dsp->base + ADSP2_CONTROL,
ADSP2_MEM_ENA, ADSP2_MEM_ENA);
if (ret != 0)
goto err_mutex;
ret = wm_adsp2_ena(dsp);
if (ret != 0)
goto err_mutex;
@ -2282,6 +2287,12 @@ static void wm_adsp2_boot_work(struct work_struct *work)
dsp->booted = true;
/* Turn DSP back off until we are ready to run */
ret = regmap_update_bits(dsp->regmap, dsp->base + ADSP2_CONTROL,
ADSP2_SYS_ENA, 0);
if (ret != 0)
goto err_ena;
mutex_unlock(&dsp->pwr_lock);
return;
@ -2344,6 +2355,10 @@ int wm_adsp2_event(struct snd_soc_dapm_widget *w,
if (!dsp->booted)
return -EIO;
ret = wm_adsp2_ena(dsp);
if (ret != 0)
goto err;
/* Sync set controls */
ret = wm_coeff_sync_controls(dsp);
if (ret != 0)
@ -2382,7 +2397,8 @@ int wm_adsp2_event(struct snd_soc_dapm_widget *w,
dsp->booted = false;
regmap_update_bits(dsp->regmap, dsp->base + ADSP2_CONTROL,
ADSP2_CORE_ENA | ADSP2_START, 0);
ADSP2_MEM_ENA | ADSP2_CORE_ENA | ADSP2_START,
0);
/* Make sure DMAs are quiesced */
regmap_write(dsp->regmap, dsp->base + ADSP2_RDMA_CONFIG_1, 0);