diff options
| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2013-01-28 16:18:17 +0400 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2013-01-28 20:49:09 +0400 |
| commit | 2d30b5751d3fdcc589985929ffb3969520f6c828 (patch) | |
| tree | 3bc815ba504c76faf9db55dc7774d2a36b71aea9 /sound/soc/codecs/wm_adsp.c | |
| parent | a4cdbec758d2491a86ba94263b847768fa004fde (diff) | |
| download | linux-2d30b5751d3fdcc589985929ffb3969520f6c828.tar.xz | |
ASoC: wm_adsp: Ensure ADSP2 DMAs are quiesced when DSP is halted
Maximise robustness for the widest range of firmwares by ensuring the DSP
is in a consistent state when halted.
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 | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c index b6b654837585..93d03bc0661b 100644 --- a/sound/soc/codecs/wm_adsp.c +++ b/sound/soc/codecs/wm_adsp.c @@ -103,9 +103,12 @@ #define ADSP1_START_SHIFT 0 /* DSP1_START */ #define ADSP1_START_WIDTH 1 /* DSP1_START */ -#define ADSP2_CONTROL 0 -#define ADSP2_CLOCKING 1 -#define ADSP2_STATUS1 4 +#define ADSP2_CONTROL 0x0 +#define ADSP2_CLOCKING 0x1 +#define ADSP2_STATUS1 0x4 +#define ADSP2_WDMA_CONFIG_1 0x30 +#define ADSP2_WDMA_CONFIG_2 0x31 +#define ADSP2_RDMA_CONFIG_1 0x34 /* * ADSP2 Control @@ -642,6 +645,11 @@ int wm_adsp2_event(struct snd_soc_dapm_widget *w, ADSP2_SYS_ENA | ADSP2_CORE_ENA | ADSP2_START, 0); + /* Make sure DMAs are quiesced */ + regmap_write(dsp->regmap, dsp->base + ADSP2_WDMA_CONFIG_1, 0); + regmap_write(dsp->regmap, dsp->base + ADSP2_WDMA_CONFIG_2, 0); + regmap_write(dsp->regmap, dsp->base + ADSP2_RDMA_CONFIG_1, 0); + if (dsp->dvfs) { ret = regulator_set_voltage(dsp->dvfs, 1200000, 1800000); |