ASoC: codecs: wm_adsp: Allow wm_adsp to hibernate without stopping DSP

Some parts do not stop the DSP core before runtime suspend, however,
this leaves the DSP controls enabled and accessible whilst the part is
suspended and the regmap is cache_only.

Add new APIs to allow for the DSP to hibernate when the part is
suspended, and the DSP is not shut down.

Signed-off-by: Stefan Binding <sbinding@opensource.cirrus.com>
Reviewed-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://patch.msgid.link/20260224161821.93365-3-sbinding@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c
index 2e23848e1dce942e974867da571f3209d38dad29..d95b54275b5ecaccf84294bb36da75549205da23 100644 (file)
--- a/sound/soc/codecs/wm_adsp.c
+++ b/sound/soc/codecs/wm_adsp.c
@@ -1100,6 +1100,12 @@ void wm_adsp_stop(struct wm_adsp *dsp)
 }
 EXPORT_SYMBOL_GPL(wm_adsp_stop);
 
+void wm_adsp_hibernate(struct wm_adsp *dsp, bool hibernate)
+{
+       cs_dsp_hibernate(&dsp->cs_dsp, hibernate);
+}
+EXPORT_SYMBOL_GPL(wm_adsp_hibernate);
+
 int wm_adsp_event(struct snd_soc_dapm_widget *w,
                  struct snd_kcontrol *kcontrol, int event)
 {

diff --git a/sound/soc/codecs/wm_adsp.h b/sound/soc/codecs/wm_adsp.h
index 8035fda71f8db45bc9df7cb552c161b26b1b3d75..a9118be793d7923bb5af18ff950618397278ebef 100644 (file)
--- a/sound/soc/codecs/wm_adsp.h
+++ b/sound/soc/codecs/wm_adsp.h
@@ -103,6 +103,7 @@ irqreturn_t wm_halo_wdt_expire(int irq, void *data);
 
 int wm_adsp_run(struct wm_adsp *dsp);
 void wm_adsp_stop(struct wm_adsp *dsp);
+void wm_adsp_hibernate(struct wm_adsp *dsp, bool hibernate);
 int wm_adsp_event(struct snd_soc_dapm_widget *w,
                  struct snd_kcontrol *kcontrol, int event);