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ALSA: hda: cs35l56: Enable low-power hibernation mode on SPI

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SPI hibernation is now supported with the latest hibernation/wake
sequences in the shared ASoC code.

This has a functional dependency on two commits:

commit 3df761bdbc ("ASoC: cs35l56: Wake transactions need to be issued
twice")

commit a47cf4dac7 ("ASoC: cs35l56: Change hibernate sequence to use
allow auto hibernate")

To protect against this, enabling hibernation is conditional on
CS35L56_WAKE_HOLD_TIME_US being defined, which indicates that the new
hibernation sequences are available.

Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20231121154419.19435-1-rf@opensource.cirrus.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Richard Fitzgerald 2023-11-21 15:44:19 +00:00 committed by Takashi Iwai
parent d04ce4113c
commit 732c678eb0
1 changed files with 4 additions and 0 deletions
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4
sound/pci/hda/cs35l56_hda_spi.c
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@ -21,6 +21,10 @@ static int cs35l56_hda_spi_probe(struct spi_device *spi)
return -ENOMEM;
cs35l56->base.dev = &spi->dev;
#ifdef CS35L56_WAKE_HOLD_TIME_US
cs35l56->base.can_hibernate = true;
#endif
cs35l56->base.regmap = devm_regmap_init_spi(spi, &cs35l56_regmap_spi);
if (IS_ERR(cs35l56->base.regmap)) {
ret = PTR_ERR(cs35l56->base.regmap);