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ASoC: cs35l56: Change hibernate sequence to use allow auto hibernate

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If the hardware uses SPI_MOSI, I2C_SCL or I2C_SDA as the wake source
the bus activity of sending HIBERNATE_NOW will wake up the amps that
were already put into hibernate.

ALLOW_AUTO_HIBERNATE tells the firmware to hibernate itself after a
timeout of a few seconds, giving the driver instances time to send this
before any amps have gone into hibernate.

Signed-off-by: Simon Trimmer <simont@opensource.cirrus.com>
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20231006111039.101914-2-rf@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Simon Trimmer 2023-10-06 12:10:36 +01:00 • committed by Mark Brown
parent c98a0a83dc
commit a47cf4dac7
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GPG key ID: 24D68B725D5487D0
1 changed files with 5 additions and 10 deletions
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15
sound/soc/codecs/cs35l56-shared.c
View file

@ -439,7 +439,7 @@ EXPORT_SYMBOL_NS_GPL(cs35l56_is_fw_reload_needed, SND_SOC_CS35L56_SHARED);
static const struct reg_sequence cs35l56_hibernate_seq[] = { static const struct reg_sequence cs35l56_hibernate_seq[] = {
/* This must be the last register access */ /* This must be the last register access */
REG_SEQ0(CS35L56_DSP_VIRTUAL1_MBOX_1, CS35L56_MBOX_CMD_HIBERNATE_NOW), REG_SEQ0(CS35L56_DSP_VIRTUAL1_MBOX_1, CS35L56_MBOX_CMD_ALLOW_AUTO_HIBERNATE),
}; };
static const struct reg_sequence cs35l56_hibernate_wake_seq[] = { static const struct reg_sequence cs35l56_hibernate_wake_seq[] = {
@ -473,12 +473,6 @@ int cs35l56_runtime_suspend_common(struct cs35l56_base *cs35l56_base)
return 0; return 0;
} }
/*
* Enable auto-hibernate. If it is woken by some other wake source
* it will automatically return to hibernate.
*/
cs35l56_mbox_send(cs35l56_base, CS35L56_MBOX_CMD_ALLOW_AUTO_HIBERNATE);
/* /*
* Must enter cache-only first so there can't be any more register * Must enter cache-only first so there can't be any more register
* accesses other than the controlled hibernate sequence below. * accesses other than the controlled hibernate sequence below.
@ -545,11 +539,12 @@ out_sync:
return 0; return 0;
err: err:
regmap_write(cs35l56_base->regmap, CS35L56_DSP_VIRTUAL1_MBOX_1,
CS35L56_MBOX_CMD_HIBERNATE_NOW);
regcache_cache_only(cs35l56_base->regmap, true); regcache_cache_only(cs35l56_base->regmap, true);
regmap_multi_reg_write_bypassed(cs35l56_base->regmap,
cs35l56_hibernate_seq,
ARRAY_SIZE(cs35l56_hibernate_seq));
return ret; return ret;
} }
EXPORT_SYMBOL_NS_GPL(cs35l56_runtime_resume_common, SND_SOC_CS35L56_SHARED); EXPORT_SYMBOL_NS_GPL(cs35l56_runtime_resume_common, SND_SOC_CS35L56_SHARED);