diff options
Diffstat (limited to 'sound/soc/codecs/wm_adsp.c')
| -rw-r--r-- | sound/soc/codecs/wm_adsp.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c index 7fdb68ef384e..ffc89fab96fb 100644 --- a/sound/soc/codecs/wm_adsp.c +++ b/sound/soc/codecs/wm_adsp.c @@ -544,6 +544,28 @@ int wm_adsp2_event(struct snd_soc_dapm_widget *w, switch (event) { case SND_SOC_DAPM_POST_PMU: + /* + * For simplicity set the DSP clock rate to be the + * SYSCLK rate rather than making it configurable. + */ + ret = regmap_read(dsp->regmap, ARIZONA_SYSTEM_CLOCK_1, &val); + if (ret != 0) { + adsp_err(dsp, "Failed to read SYSCLK state: %d\n", + ret); + return ret; + } + val = (val & ARIZONA_SYSCLK_FREQ_MASK) + >> ARIZONA_SYSCLK_FREQ_SHIFT; + + ret = regmap_update_bits(dsp->regmap, + dsp->base + ADSP2_CLOCKING, + ADSP2_CLK_SEL_MASK, val); + if (ret != 0) { + adsp_err(dsp, "Failed to set clock rate: %d\n", + ret); + return ret; + } + if (dsp->dvfs) { ret = regmap_read(dsp->regmap, dsp->base + ADSP2_CLOCKING, &val); @@ -631,6 +653,17 @@ int wm_adsp2_init(struct wm_adsp *adsp, bool dvfs) { int ret; + /* + * Disable the DSP memory by default when in reset for a small + * power saving. + */ + ret = regmap_update_bits(adsp->regmap, adsp->base + ADSP2_CONTROL, + ADSP2_MEM_ENA, 0); + if (ret != 0) { + adsp_err(adsp, "Failed to clear memory retention: %d\n", ret); + return ret; + } + if (dvfs) { adsp->dvfs = devm_regulator_get(adsp->dev, "DCVDD"); if (IS_ERR(adsp->dvfs)) { |