diff options
| author | Stefan Binding | 2023-10-26 16:05:53 +0100 |
|---|---|---|
| committer | Takashi Iwai | 2023-10-26 17:55:19 +0200 |
| commit | fff393db71c1d53a13f9eb2f8da77c1f5e4e30bc (patch) | |
| tree | a2021e2cf54cd1a5dd4d5d58b82798d259629960 /sound | |
| parent | a7423e9019a9a595919da44104725eef8a518652 (diff) | |
ALSA: hda: cs35l41: Assert Reset prior to de-asserting in probe and system resume
To ensure we are in a known state, exiting from reset at the point of
probe or in system resume, assert reset before we de-assert it.
Since the BIOS may enter into a pre-boot environment to control the
amps (for example for boot beep), we need to ensure we start from a
known, reset state prior to probe or system resume.
Signed-off-by: Stefan Binding <sbinding@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20231026150558.2105827-4-sbinding@opensource.cirrus.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/pci/hda/cs35l41_hda.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/sound/pci/hda/cs35l41_hda.c b/sound/pci/hda/cs35l41_hda.c index 919e38213975..1ac721085fb5 100644 --- a/sound/pci/hda/cs35l41_hda.c +++ b/sound/pci/hda/cs35l41_hda.c @@ -840,6 +840,7 @@ static int cs35l41_system_resume(struct device *dev) } if (cs35l41->reset_gpio) { + gpiod_set_value_cansleep(cs35l41->reset_gpio, 0); usleep_range(2000, 2100); gpiod_set_value_cansleep(cs35l41->reset_gpio, 1); } @@ -1693,6 +1694,7 @@ int cs35l41_hda_probe(struct device *dev, const char *device_name, int id, int i } } if (cs35l41->reset_gpio) { + gpiod_set_value_cansleep(cs35l41->reset_gpio, 0); usleep_range(2000, 2100); gpiod_set_value_cansleep(cs35l41->reset_gpio, 1); } |