renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2025-01-03 19:24:02 +08:00
Code

ASoC: adsp: Set DSP clock rate to SYSCLK rate

Browse Source 
For simplicity always run the DSP at the SYSCLK rate.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Mark Brown 2012-12-02 21:50:46 +09:00
parent 10a2b662c4
commit dd49e2c8b9
1 changed files with 22 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
sound/soc/codecs/wm_adsp.c
View File

@ -544,6 +544,28 @@ int wm_adsp2_event(struct snd_soc_dapm_widget *w,
switch (event) { switch (event) {
case SND_SOC_DAPM_POST_PMU: 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) { if (dsp->dvfs) {
ret = regmap_read(dsp->regmap, ret = regmap_read(dsp->regmap,
dsp->base + ADSP2_CLOCKING, &val); dsp->base + ADSP2_CLOCKING, &val);