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03-misc-spi-stuff.patch
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From e341efc308e5374ded6b471f9e1ec01450bcc93e Mon Sep 17 00:00:00 2001
From: Stefan Binding <[email protected]>
Date: Wed, 25 May 2022 14:16:32 +0100
Subject: [PATCH] ASoC: cs35l41: Add common cs35l41 enter hibernate function
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 <[email protected]>
Signed-off-by: Stefan Binding <[email protected]>
Signed-off-by: Vitaly Rodionov <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
---
include/sound/cs35l41.h | 2 ++
sound/soc/codecs/cs35l41-lib.c | 19 +++++++++++++++++++
sound/soc/codecs/cs35l41.c | 10 +---------
3 files changed, 22 insertions(+), 9 deletions(-)
diff --git a/include/sound/cs35l41.h b/include/sound/cs35l41.h
index 7759f2e14d96d4..a66ef37184fd52 100644
--- a/include/sound/cs35l41.h
+++ b/include/sound/cs35l41.h
@@ -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);
diff --git a/sound/soc/codecs/cs35l41-lib.c b/sound/soc/codecs/cs35l41-lib.c
index cc5366c8bdd61e..10b754481ca2a2 100644
--- a/sound/soc/codecs/cs35l41-lib.c
+++ b/sound/soc/codecs/cs35l41-lib.c
@@ -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;
diff --git a/sound/soc/codecs/cs35l41.c b/sound/soc/codecs/cs35l41.c
index be7d0251773966..a115ea35b92d46 100644
--- a/sound/soc/codecs/cs35l41.c
+++ b/sound/soc/codecs/cs35l41.c
@@ -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);