system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-09-06 18:01:05 +00:00
Code Issues Packages Projects Releases Wiki Activity

ASoC: cs35l41: Add common cs35l41 enter hibernate function

Browse source 
Since the CS35L41 HDA driver also support hibernation, it
makes sense to move code from the ASoC driver to enter
hibernation into common code.

Since HDA must support laptops which do not support hibernation
due to lack of external boost GPIO it is necessary to
ensure the function returns an error when an unsupported
boost type is in use.

Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>

Signed-off-by: Stefan Binding <sbinding@opensource.cirrus.com>
Signed-off-by: Vitaly Rodionov <vitalyr@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20220525131638.5512-12-vitalyr@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Stefan Binding 2022-05-25 14:16:32 +01:00 committed by Mark Brown
parent 94e0bc317a
commit e341efc308
No known key found for this signature in database
GPG key ID: 24D68B725D5487D0
3 changed files with 22 additions and 9 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
include/sound/cs35l41.h
View file

@ -881,6 +881,8 @@ void cs35l41_configure_cs_dsp(struct device *dev, struct regmap *reg, struct cs_
int cs35l41_set_cspl_mbox_cmd(struct device *dev, struct regmap *regmap,
enum cs35l41_cspl_mbox_cmd cmd);
int cs35l41_write_fs_errata(struct device *dev, struct regmap *regmap);
int cs35l41_enter_hibernate(struct device *dev, struct regmap *regmap,
enum cs35l41_boost_type b_type);
int cs35l41_exit_hibernate(struct device *dev, struct regmap *regmap);
int cs35l41_init_boost(struct device *dev, struct regmap *regmap,
struct cs35l41_hw_cfg *hw_cfg);

19
sound/soc/codecs/cs35l41-lib.c
View file

@ -1321,6 +1321,25 @@ int cs35l41_write_fs_errata(struct device *dev, struct regmap *regmap)
}
EXPORT_SYMBOL_GPL(cs35l41_write_fs_errata);
int cs35l41_enter_hibernate(struct device *dev, struct regmap *regmap,
enum cs35l41_boost_type b_type)
{
if (!cs35l41_safe_reset(regmap, b_type)) {
dev_dbg(dev, "System does not support Suspend\n");
return -EINVAL;
}
dev_dbg(dev, "Enter hibernate\n");
regmap_write(regmap, CS35L41_WAKESRC_CTL, 0x0088);
regmap_write(regmap, CS35L41_WAKESRC_CTL, 0x0188);
// Don't wait for ACK since bus activity would wake the device
regmap_write(regmap, CS35L41_DSP_VIRT1_MBOX_1, CSPL_MBOX_CMD_HIBERNATE);
return 0;
}
EXPORT_SYMBOL_GPL(cs35l41_enter_hibernate);
static void cs35l41_wait_for_pwrmgt_sts(struct device *dev, struct regmap *regmap)
{
const int pwrmgt_retries = 10;

10
sound/soc/codecs/cs35l41.c
View file

@ -1335,15 +1335,7 @@ static int __maybe_unused cs35l41_runtime_suspend(struct device *dev)
if (!cs35l41->dsp.preloaded || !cs35l41->dsp.cs_dsp.running)
return 0;
dev_dbg(cs35l41->dev, "Enter hibernate\n");
cs35l41_safe_reset(cs35l41->regmap, cs35l41->hw_cfg.bst_type);
regmap_write(cs35l41->regmap, CS35L41_WAKESRC_CTL, 0x0088);
regmap_write(cs35l41->regmap, CS35L41_WAKESRC_CTL, 0x0188);
// Don't wait for ACK since bus activity would wake the device
regmap_write(cs35l41->regmap, CS35L41_DSP_VIRT1_MBOX_1,
CSPL_MBOX_CMD_HIBERNATE);
cs35l41_enter_hibernate(dev, cs35l41->regmap, cs35l41->hw_cfg.bst_type);
regcache_cache_only(cs35l41->regmap, true);
regcache_mark_dirty(cs35l41->regmap);