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ASoC: cs35l56: Log a message if firmware is missing 

If the amp is still reporting FIRMWARE_MISSING after cs35l56_patch()
has completed it is helpful to log a warning.

After a complete firmware download the FIRMWARE_MISSING flag will be
clear. If this isn't the case, the driver should log a message to
report this.

The amp can produce basic audio output without firmware, as a fallback,
so this wasn't originally logged as a warning condition because the amp
is still in an operational state - just not with full functionality.
However, it was not at all obvious to an end user that anything is
unusual.

Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://patch.msgid.link/20251128112520.40067-1-rf@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Richard Fitzgerald 2025-11-28 11:25:20 +00:00 committed by Mark Brown
parent feab287589
commit 816c9cac35
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
3 changed files with 21 additions and 0 deletions
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1
include/sound/cs35l56.h
View File

@ -409,6 +409,7 @@ int cs35l56_cal_set_status_get(struct cs35l56_base *cs35l56_base,
struct snd_ctl_elem_value *uvalue);
int cs35l56_read_prot_status(struct cs35l56_base *cs35l56_base,
bool *fw_missing, unsigned int *fw_version);
void cs35l56_warn_if_firmware_missing(struct cs35l56_base *cs35l56_base);
void cs35l56_log_tuning(struct cs35l56_base *cs35l56_base, struct cs_dsp *cs_dsp);
int cs35l56_hw_init(struct cs35l56_base *cs35l56_base);
int cs35l56_get_speaker_id(struct cs35l56_base *cs35l56_base);

17
sound/soc/codecs/cs35l56-shared.c
View File

@ -1337,6 +1337,23 @@ int cs35l56_read_prot_status(struct cs35l56_base *cs35l56_base,
}
EXPORT_SYMBOL_NS_GPL(cs35l56_read_prot_status, "SND_SOC_CS35L56_SHARED");
void cs35l56_warn_if_firmware_missing(struct cs35l56_base *cs35l56_base)
{
unsigned int firmware_version;
bool firmware_missing;
int ret;
ret = cs35l56_read_prot_status(cs35l56_base, &firmware_missing, &firmware_version);
if (ret)
return;
if (!firmware_missing)
return;
dev_warn(cs35l56_base->dev, "FIRMWARE_MISSING\n");
}
EXPORT_SYMBOL_NS_GPL(cs35l56_warn_if_firmware_missing, "SND_SOC_CS35L56_SHARED");
void cs35l56_log_tuning(struct cs35l56_base *cs35l56_base, struct cs_dsp *cs_dsp)
{
__be32 pid, sid, tid;

3
sound/soc/codecs/cs35l56.c
View File

@ -823,6 +823,9 @@ static void cs35l56_patch(struct cs35l56_private *cs35l56, bool firmware_missing
goto err_unlock;
}
/* Check if the firmware is still reported missing */
cs35l56_warn_if_firmware_missing(&cs35l56->base);
regmap_clear_bits(cs35l56->base.regmap,
cs35l56->base.fw_reg->prot_sts,
CS35L56_FIRMWARE_MISSING);