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ASoC: cs35l56: In secure mode skip SHUTDOWN and RESET around fw download 

If the device is in secure mode it's unnecessary to send a SHUTDOWN and
SYSTEM_RESET around the firmware download. It could only be patching
insecure tunings. A tuning patch doesn't need a SHUTDOWN and only needs
a REINIT afterwards. This will reduce the overhead of exiting system
suspend in secure mode.

Signed-off-by: Simon Trimmer <simont@opensource.cirrus.com>
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://lore.kernel.org/r/Message-Id: <20230518150250.1121006-4-rf@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Simon Trimmer 2023-05-18 16:02:50 +01:00 committed by Mark Brown
parent c9001a2754
commit 1a8edfcffa
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 38 additions and 10 deletions
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1
include/sound/cs35l56.h
View File

@ -223,6 +223,7 @@
#define CS35L56_MBOX_CMD_AUDIO_PLAY 0x0B000001
#define CS35L56_MBOX_CMD_AUDIO_PAUSE 0x0B000002
#define CS35L56_MBOX_CMD_AUDIO_REINIT 0x0B000003
#define CS35L56_MBOX_CMD_HIBERNATE_NOW 0x02000001
#define CS35L56_MBOX_CMD_WAKEUP 0x02000002
#define CS35L56_MBOX_CMD_PREVENT_AUTO_HIBERNATE 0x02000003

47
sound/soc/codecs/cs35l56.c
View File

@ -825,19 +825,23 @@ static void cs35l56_system_reset(struct cs35l56_private *cs35l56)
regcache_cache_only(cs35l56->regmap, false);
}
static void cs35l56_dsp_work(struct work_struct *work)
static void cs35l56_secure_patch(struct cs35l56_private *cs35l56)
{
int ret;
/* Use wm_adsp to load and apply the firmware patch and coefficient files */
ret = wm_adsp_power_up(&cs35l56->dsp);
if (ret)
dev_dbg(cs35l56->dev, "%s: wm_adsp_power_up ret %d\n", __func__, ret);
else
cs35l56_mbox_send(cs35l56, CS35L56_MBOX_CMD_AUDIO_REINIT);
}
static void cs35l56_patch(struct cs35l56_private *cs35l56)
{
struct cs35l56_private *cs35l56 = container_of(work,
struct cs35l56_private,
dsp_work);
unsigned int reg;
unsigned int val;
int ret = 0;
if (!cs35l56->init_done)
return;
pm_runtime_get_sync(cs35l56->dev);
int ret;
/*
* Disable SoundWire interrupts to prevent race with IRQ work.
@ -909,6 +913,29 @@ err:
sdw_write_no_pm(cs35l56->sdw_peripheral, CS35L56_SDW_GEN_INT_MASK_1,
CS35L56_SDW_INT_MASK_CODEC_IRQ);
}
}
static void cs35l56_dsp_work(struct work_struct *work)
{
struct cs35l56_private *cs35l56 = container_of(work,
struct cs35l56_private,
dsp_work);
if (!cs35l56->init_done)
return;
pm_runtime_get_sync(cs35l56->dev);
/*
* When the device is running in secure mode the firmware files can
* only contain insecure tunings and therefore we do not need to
* shutdown the firmware to apply them and can use the lower cost
* reinit sequence instead.
*/
if (cs35l56->secured)
cs35l56_secure_patch(cs35l56);
else
cs35l56_patch(cs35l56);
pm_runtime_mark_last_busy(cs35l56->dev);
pm_runtime_put_autosuspend(cs35l56->dev);