linux-kernel - [PATCH 00/11] HID: playstation: Add support for audio jack handling on DualSense

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Message-Id: <20250526-dualsense-hid-jack-v1-0-a65fee4a60cc@collabora.com>
Date: Mon, 26 May 2025 15:51:23 +0300
From: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
To: Roderick Colenbrander <roderick.colenbrander@...y.com>, 
 Jiri Kosina <jikos@...nel.org>, Benjamin Tissoires <bentiss@...nel.org>, 
 Henrik Rydberg <rydberg@...math.org>
Cc: kernel@...labora.com, linux-input@...r.kernel.org, 
 linux-kernel@...r.kernel.org
Subject: [PATCH 00/11] HID: playstation: Add support for audio jack
 handling on DualSense

The Sony DualSense wireless controller (PS5) provides an internal mono
speaker, in addition to the 3.5mm jack socket for headphone output and
headset microphone input.  However, the default audio output path is set
to headphones, regardless of whether they are actually inserted or not.

This patch series aims to improve the audio support by implementing the
following changes:

* Detect when the plugged state of the audio jack changes and toggle
  audio output between headphones and internal speaker, as required.
  The latter is achieved by essentially routing the right channel of the
  audio source to the mono speaker.

* Adjust the speaker volume since its default level is too low and,
  therefore, cannot generate any audible sound.

* Register a dedicated input device for the audio jack and use it to
  report all headphone and headset mic insert events.

It's worth noting the latter is necessary since the controller complies
with v1.0 of the USB Audio Class spec (UAC1) and, therefore, cannot
advertise any jack detection capability.  However, this feature can be
implemented in the generic USB audio driver via quirks, i.e. by
configuring an input handler to receive hotplug events from the HID
driver.

Unrelated to the above, also provide a few driver cleanup patches, e.g.
make use of bitfields macros, simplify locking, fix coding style.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
---
Cristian Ciocaltea (11):
      HID: playstation: Make use of bitfield macros
      HID: playstation: Add spaces around arithmetic operators
      HID: playstation: Simplify locking with guard() and scoped_guard()
      HID: playstation: Replace uint{32,16,8}_t with u{32,16,8}
      HID: playstation: Correct spelling in comment sections
      HID: playstation: Fix all alignment and line length issues
      HID: playstation: Document spinlock_t usage
      HID: playstation: Prefer kzalloc(sizeof(*buf)...)
      HID: playstation: Rename DualSense input report status field
      HID: playstation: Support DualSense audio jack hotplug detection
      HID: playstation: Support DualSense audio jack event reporting

 drivers/hid/hid-playstation.c | 885 ++++++++++++++++++++++++------------------
 1 file changed, 500 insertions(+), 385 deletions(-)
---
base-commit: 7bac2c97af4078d7a627500c9bcdd5b033f97718
change-id: 20250522-dualsense-hid-jack-d3cb65b75da1