diff options
| author | Richard Fitzgerald <rf@opensource.cirrus.com> | 2023-07-31 18:57:21 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2023-08-01 08:30:06 +0200 |
| commit | e5bac77b67082e59f7aceea08a30b5dc66138643 (patch) | |
| tree | b9ac25491784e7d4fc2ae396c5a6a7ee7b8171e1 /sound/pci/hda | |
| parent | ALSA: hda/cs35l56: Call cs_dsp_power_down() before reloading firmware (diff) | |
| download | linux-e5bac77b67082e59f7aceea08a30b5dc66138643.tar.xz linux-e5bac77b67082e59f7aceea08a30b5dc66138643.zip | |
ALSA: hda/cs35l56: Always power-up and start cs_dsp
Always call cs_dsp_power_up() and cs_dsp_run() in
cs35l56_hda_fw_load() even if there aren't any firmware files
to download. Also, if there aren't any firmware files to
download there is no need to do cs35l56_firmware_shutdown() and
cs35l56_system_reset().
If there aren't any firmware files there's no need to write
anything to the CS35L56 registers to make it work - it will
already be running the ROM firmware. So it's not strictly
necessary to start cs_dsp.
But it's perfectly ok to call cs_dsp_power_up() and
cs_dsp_run() without downloading any firmware. This avoids
having to support a state where audio is playing but cs_dsp
is not running.
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20230731165726.7940-5-rf@opensource.cirrus.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/hda')
| -rw-r--r-- | sound/pci/hda/cs35l56_hda.c | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/sound/pci/hda/cs35l56_hda.c b/sound/pci/hda/cs35l56_hda.c index b6b8cb21da75..2870f82bfa45 100644 --- a/sound/pci/hda/cs35l56_hda.c +++ b/sound/pci/hda/cs35l56_hda.c @@ -536,10 +536,6 @@ static int cs35l56_hda_fw_load(struct cs35l56_hda *cs35l56) cs35l56_hda_request_firmware_files(cs35l56, &wmfw_firmware, &wmfw_filename, &coeff_firmware, &coeff_filename); - /* Nothing to do - no firmware files were found to download */ - if (!wmfw_filename && !coeff_filename) - return 0; - mutex_lock(&cs35l56->base.irq_lock); pm_runtime_get_sync(cs35l56->base.dev); @@ -549,7 +545,7 @@ static int cs35l56_hda_fw_load(struct cs35l56_hda *cs35l56) * shutdown the firmware to apply them and can use the lower cost * reinit sequence instead. */ - if (!cs35l56->base.secured) { + if (!cs35l56->base.secured && (wmfw_firmware || coeff_firmware)) { ret = cs35l56_firmware_shutdown(&cs35l56->base); if (ret) goto err; @@ -572,8 +568,8 @@ static int cs35l56_hda_fw_load(struct cs35l56_hda *cs35l56) ret = cs35l56_mbox_send(&cs35l56->base, CS35L56_MBOX_CMD_AUDIO_REINIT); if (ret) goto err; - } else { - /* Reset the device and wait for it to boot */ + } else if (wmfw_firmware || coeff_firmware) { + /* If we downloaded firmware, reset the device and wait for it to boot */ cs35l56_system_reset(&cs35l56->base, false); regcache_mark_dirty(cs35l56->base.regmap); ret = cs35l56_wait_for_firmware_boot(&cs35l56->base); |