[PATCH v5 0/4] Support mute notifications for CS35L41 HDA

Stefan Binding posted 4 patches 10 months ago
sound/pci/hda/cs35l41_hda.c   | 132 ++++++++++++++++++++++++++++++----
sound/pci/hda/cs35l41_hda.h   |   3 +
sound/pci/hda/hda_component.h |   4 ++
sound/pci/hda/patch_realtek.c |  83 ++++++++++++++++++++-
4 files changed, 208 insertions(+), 14 deletions(-)
[PATCH v5 0/4] Support mute notifications for CS35L41 HDA
Posted by Stefan Binding 10 months ago
Some systems use a special keyboard shortcut to mute speaker audio.
On systems using CS35L41 HDA which have this shortcut, add a
mechanism which uses ACPI notifications to determine when the
shortcut is pressed, and then mute the amps inside the driver.

Since this is not a normal mute mechanism, it does not go through
userspace. To allow userspace to be able to track this special
state, add an ALSA control which tracks the state of this forced
mute

Changes since v2:
- Fixed compile issue when CONFIG_ACPI is missing

Changes since v3:
- Split first patch into 3 separate patches
- Ensure all acpi code is protected by check for CONFIG_ACPI in
realtek driver

Changes since v4:
- Rebase onto for-next branch

Stefan Binding (4):
  ALSA: hda: cs35l41: Add notification support into component binding
  ALSA: hda/realtek: Support ACPI Notification framework via component
    binding
  ALSA: hda: cs35l41: Support mute notifications for CS35L41 HDA
  ALSA: hda: cs35l41: Add read-only ALSA control for forced mute

 sound/pci/hda/cs35l41_hda.c   | 132 ++++++++++++++++++++++++++++++----
 sound/pci/hda/cs35l41_hda.h   |   3 +
 sound/pci/hda/hda_component.h |   4 ++
 sound/pci/hda/patch_realtek.c |  83 ++++++++++++++++++++-
 4 files changed, 208 insertions(+), 14 deletions(-)

-- 
2.34.1
Re: [PATCH v5 0/4] Support mute notifications for CS35L41 HDA
Posted by Takashi Iwai 10 months ago
On Thu, 21 Sep 2023 18:28:45 +0200,
Stefan Binding wrote:
> 
> Some systems use a special keyboard shortcut to mute speaker audio.
> On systems using CS35L41 HDA which have this shortcut, add a
> mechanism which uses ACPI notifications to determine when the
> shortcut is pressed, and then mute the amps inside the driver.
> 
> Since this is not a normal mute mechanism, it does not go through
> userspace. To allow userspace to be able to track this special
> state, add an ALSA control which tracks the state of this forced
> mute
> 
> Changes since v2:
> - Fixed compile issue when CONFIG_ACPI is missing
> 
> Changes since v3:
> - Split first patch into 3 separate patches
> - Ensure all acpi code is protected by check for CONFIG_ACPI in
> realtek driver
> 
> Changes since v4:
> - Rebase onto for-next branch
> 
> Stefan Binding (4):
>   ALSA: hda: cs35l41: Add notification support into component binding
>   ALSA: hda/realtek: Support ACPI Notification framework via component
>     binding
>   ALSA: hda: cs35l41: Support mute notifications for CS35L41 HDA
>   ALSA: hda: cs35l41: Add read-only ALSA control for forced mute

Applied to for-next branch now.  Thanks.


Takashi