| Message ID | 20231121154419.19435-1-rf@opensource.cirrus.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | ALSA: hda: cs35l56: Enable low-power hibernation mode on SPI | expand |
On Tue, 21 Nov 2023 16:44:19 +0100, Richard Fitzgerald wrote: > > 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> Is this expected to be merged for 6.7? Or it can be post 6.7? I guess the former, but just to make sure. thanks, Takashi
On 21/11/23 20:36, Takashi Iwai wrote: > On Tue, 21 Nov 2023 16:44:19 +0100, > Richard Fitzgerald wrote: >> >> 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> > > Is this expected to be merged for 6.7? Or it can be post 6.7? > I guess the former, but just to make sure. > It would be good to get it into 6.7 because it reduces the power consumption in runtime-suspend and suspend-to-RAM. But it's not critical (it's not a bugfix). > > thanks, > > Takashi
On Wed, 22 Nov 2023 12:04:27 +0100, Richard Fitzgerald wrote: > > On 21/11/23 20:36, Takashi Iwai wrote: > > On Tue, 21 Nov 2023 16:44:19 +0100, > > Richard Fitzgerald wrote: > >> > >> 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> > > > > Is this expected to be merged for 6.7? Or it can be post 6.7? > > I guess the former, but just to make sure. > > > > It would be good to get it into 6.7 because it reduces the power > consumption in runtime-suspend and suspend-to-RAM. But it's not > critical (it's not a bugfix). OK, now applied to for-linus branch (for 6.7). thanks, Takashi
diff --git a/sound/pci/hda/cs35l56_hda_spi.c b/sound/pci/hda/cs35l56_hda_spi.c index 756aec342eab..27d7fbc56b4c 100644 --- 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);
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> --- sound/pci/hda/cs35l56_hda_spi.c | 4 ++++ 1 file changed, 4 insertions(+)