diff options
| author | Mark Brown <broonie@kernel.org> | 2022-01-05 15:59:21 +0000 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2022-01-05 15:59:21 +0000 |
| commit | 570010b82e8a04206eb228da23e4ef0264df7d25 (patch) | |
| tree | 2e876bb726658248323fb2dca0795e8c10ba835f /drivers | |
| parent | a319cb32e7cfd2703db3a883ce260a7b06729895 (diff) | |
| parent | ba235634b138cd9d012dbe983e7920481211e132 (diff) | |
Add low power hibernation support to cs35l41
Merge series from Charles Keepax <ckeepax@opensource.cirrus.com>:
This patch series adds support for the low power hibernation feature
on cs35l41. This allows the DSP memory to be retained whilst the
device enters a very low power state.
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/firmware/cirrus/cs_dsp.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/drivers/firmware/cirrus/cs_dsp.c b/drivers/firmware/cirrus/cs_dsp.c index 5af8171d6ced..e48108e694f8 100644 --- a/drivers/firmware/cirrus/cs_dsp.c +++ b/drivers/firmware/cirrus/cs_dsp.c @@ -2744,10 +2744,16 @@ EXPORT_SYMBOL_GPL(cs_dsp_stop); static int cs_dsp_halo_start_core(struct cs_dsp *dsp) { - return regmap_update_bits(dsp->regmap, - dsp->base + HALO_CCM_CORE_CONTROL, - HALO_CORE_RESET | HALO_CORE_EN, - HALO_CORE_RESET | HALO_CORE_EN); + int ret; + + ret = regmap_update_bits(dsp->regmap, dsp->base + HALO_CCM_CORE_CONTROL, + HALO_CORE_RESET | HALO_CORE_EN, + HALO_CORE_RESET | HALO_CORE_EN); + if (ret) + return ret; + + return regmap_update_bits(dsp->regmap, dsp->base + HALO_CCM_CORE_CONTROL, + HALO_CORE_RESET, 0); } static void cs_dsp_halo_stop_core(struct cs_dsp *dsp) |