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| author | Mark Brown | 2012-12-02 13:50:46 +0100 |
|---|---|---|
| committer | Mark Brown | 2012-12-02 16:09:23 +0100 |
| commit | dd49e2c8b9f18bd4f2848a9d558da08db3966319 (patch) | |
| tree | 82701f5e9b719a5a7768bbab4b36bc2c770404c7 /sound/soc/codecs/wm_adsp.c | |
| parent | ASoC: adsp: Keep ADSP2 memory powered off when not in use (diff) | |
| download | kernel-qcow2-linux-dd49e2c8b9f18bd4f2848a9d558da08db3966319.tar.gz kernel-qcow2-linux-dd49e2c8b9f18bd4f2848a9d558da08db3966319.tar.xz kernel-qcow2-linux-dd49e2c8b9f18bd4f2848a9d558da08db3966319.zip | |
ASoC: adsp: Set DSP clock rate to SYSCLK rate
For simplicity always run the DSP at the SYSCLK rate.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/codecs/wm_adsp.c')
| -rw-r--r-- | sound/soc/codecs/wm_adsp.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c index 3a8d75bfb0b1..dcf14c38e67e 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); |