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| author | Kai Vehmanen <kai.vehmanen@linux.intel.com> | 2021-02-05 21:46:29 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2021-02-08 17:56:51 +0300 |
| commit | 87fc20e4a0cbc01fdfc23aeba93f8ce2fc3dccda (patch) | |
| tree | 176460b7a50aa3b8c1a82feb8b17e741e64f6049 /sound | |
| parent | f9e5fd1b666e9d34c94b91808bda02c2d4d00776 (diff) | |
| download | linux-87fc20e4a0cbc01fdfc23aeba93f8ce2fc3dccda.tar.xz | |
ASoC: SOF: Intel: hda: use hdac_ext fine-grained link management
Opt-in to use snd_hdac_ext_bus_link_power() to manage HDA link
power up/down events.
This allows to reduce power consumption in cases where some HDA codecs
are suspended, but other child devices (HDA or non-HDA codecs) remain
active and controller itself remains in active state.
By using snd_hdac_ext_bus_link_power(), the individual HDA links can be
powered off and if all HDA codecs are powered down, the command DMA can
also be shut down.
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Acked-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20210205184630.1938761-3-kai.vehmanen@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/sof/intel/hda-bus.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/sound/soc/sof/intel/hda-bus.c b/sound/soc/sof/intel/hda-bus.c index 789148e5584b..1ac6e79d7e62 100644 --- a/sound/soc/sof/intel/hda-bus.c +++ b/sound/soc/sof/intel/hda-bus.c @@ -19,13 +19,21 @@ #define sof_hda_ext_ops NULL #endif +#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA) +static const struct hdac_bus_ops bus_core_ops = { + .command = snd_hdac_bus_send_cmd, + .get_response = snd_hdac_bus_get_response, + .link_power = snd_hdac_ext_bus_link_power, +}; +#endif + /* * This can be used for both with/without hda link support. */ void sof_hda_bus_init(struct hdac_bus *bus, struct device *dev) { #if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA) - snd_hdac_ext_bus_init(bus, dev, NULL, sof_hda_ext_ops); + snd_hdac_ext_bus_init(bus, dev, &bus_core_ops, sof_hda_ext_ops); #else /* CONFIG_SND_SOC_SOF_HDA */ memset(bus, 0, sizeof(*bus)); bus->dev = dev; |