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| author | Charles Keepax <ckeepax@opensource.cirrus.com> | 2022-01-05 11:30:24 +0000 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2022-01-05 13:53:54 +0000 |
| commit | ba235634b138cd9d012dbe983e7920481211e132 (patch) | |
| tree | 46857a9ab3d2fec77916d70fe3f5685161e6ee30 | |
| parent | 7aa1cc1091e0a424e9e7711ca381ebe98b6865bc (diff) | |
| download | linux-stable-ba235634b138cd9d012dbe983e7920481211e132.tar.gz linux-stable-ba235634b138cd9d012dbe983e7920481211e132.tar.bz2 linux-stable-ba235634b138cd9d012dbe983e7920481211e132.zip | |
ASoC: wm_adsp: Add support for "toggle" preloaders
In the case a device can support retaining the firmware memory across
low power states it is useful for the preloader widget to only power up
whilst actually loading/unloading the core, as opposed to the normal
operation where the widget is powered for the entire time a firmware is
preloaded onto the core. Add support for this mode and a flag to enable
it.
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20220105113026.18955-7-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
| -rw-r--r-- | sound/soc/codecs/wm_adsp.c | 14 | ||||
| -rw-r--r-- | sound/soc/codecs/wm_adsp.h | 8 |
2 files changed, 19 insertions, 3 deletions
diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c index c3112bf23866..f3672e3d1703 100644 --- a/sound/soc/codecs/wm_adsp.c +++ b/sound/soc/codecs/wm_adsp.c @@ -896,11 +896,12 @@ int wm_adsp2_preloader_put(struct snd_kcontrol *kcontrol, struct wm_adsp *dsp = &dsps[mc->shift - 1]; char preload[32]; - snprintf(preload, ARRAY_SIZE(preload), "%s Preload", dsp->cs_dsp.name); + if (dsp->preloaded == ucontrol->value.integer.value[0]) + return 0; - dsp->preloaded = ucontrol->value.integer.value[0]; + snprintf(preload, ARRAY_SIZE(preload), "%s Preload", dsp->cs_dsp.name); - if (ucontrol->value.integer.value[0]) + if (ucontrol->value.integer.value[0] || dsp->toggle_preload) snd_soc_component_force_enable_pin(component, preload); else snd_soc_component_disable_pin(component, preload); @@ -909,6 +910,13 @@ int wm_adsp2_preloader_put(struct snd_kcontrol *kcontrol, flush_work(&dsp->boot_work); + dsp->preloaded = ucontrol->value.integer.value[0]; + + if (dsp->toggle_preload) { + snd_soc_component_disable_pin(component, preload); + snd_soc_dapm_sync(dapm); + } + return 0; } EXPORT_SYMBOL_GPL(wm_adsp2_preloader_put); diff --git a/sound/soc/codecs/wm_adsp.h b/sound/soc/codecs/wm_adsp.h index 0e2f113bd342..7f4fabbc6ad3 100644 --- a/sound/soc/codecs/wm_adsp.h +++ b/sound/soc/codecs/wm_adsp.h @@ -41,6 +41,14 @@ struct wm_adsp { struct list_head compr_list; struct list_head buffer_list; + + /* + * Flag indicating the preloader widget only needs power toggled + * on state change rather than held on for the duration of the + * preload, useful for devices that can retain firmware memory + * across power down. + */ + bool toggle_preload; }; #define WM_ADSP1(wname, num) \ |