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

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 3df761bdbc8b ("ASoC: cs35l56: Wake transactions need to be issued
twice")

commit a47cf4dac7dc ("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>

diff --git a/sound/pci/hda/cs35l56_hda_spi.c b/sound/pci/hda/cs35l56_hda_spi.c
index 756aec342eab7f3a52d910d7e7a9249614879f96..27d7fbc56b4c2af7b8115c0816fc38f7b87a78ce 100644 (file)
--- a/sound/pci/hda/cs35l56_hda_spi.c
+++ b/sound/pci/hda/cs35l56_hda_spi.c
@@ -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);