WIP: Implement DCP 14.7 ABI - #562
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Certain Broadcom bluetooth chips (bcm4377/bcm4378/bcm438) need ACL streams carrying audio to be set as "high priority" using a vendor specific command to prevent 10-ish second-long dropouts whenever something does a device scan. This patch sends the command when the socket priority is set to TC_PRIO_INTERACTIVE, as BlueZ does for audio. Signed-off-by: Sasha Finkelstein <fnkl.kernel@gmail.com>
The current approach of silently disabling all rust drivers if the toolchain is missing results in users that try to compile their own kernels getting a "successful" build and then being confused about where did their drivers go. In comparison, missing openssl results in a build failure, not a disappearance of everything that depends on it. This also means that allyesconfig will depend on rust, but since the rust experiment concluded with "rust is here to stay", i believe that allyesconfig should be building rust drivers too. Signed-off-by: Sasha Finkelstein <k@chaosmail.tech>
Signed-off-by: Janne Grunau <j@jannau.net>
Apple M3 Pro and Max devices are using 'gp00' keys for GPIO in addition to 'gP00' keys. Add a second compatible to handle this keys with an additional macsmc-gpio instance. Signed-off-by: Janne Grunau <j@jannau.net>
Add support for SMC GPIO keys with a lower letter 'p' via the "apple,smc-low-gpio" compatible. This adds support for a second macsmc-gpio controller using 'gp00' keys. These keys are used on Apple M3 Pro and Max MacBooks in the controller for keyboard and trackpad and for the built-in DisplayPort to HDMI converter. Signed-off-by: Janne Grunau <j@jannau.net>
Apple M3 Pro and Max devices are using 'gp00' keys for GPIO in addition to 'gP00' keys. These keys are handled by an additional macsmc-gpio instance using the "apple,smc-low-gpio" compatible. Signed-off-by: Janne Grunau <j@jannau.net>
Signed-off-by: James Calligeros <jcalligeros99@gmail.com>
This firmware version was only ever used for extremely early alpha installs based on ALARM (so basically just for developers testing things). Remove support for it to make way for a new target ABI for M3 machines. Signed-off-by: James Calligeros <jcalligeros99@gmail.com>
Asahi Linux will target the firmware ABI from macOS 14.8.3 for i/mBoot-loaded firmware on M3 series machines. This version identifies itself as v14.7, so add it as such to the DCP driver. Most things are working, except for EDID retrieval for external displays and audio over HDMI/DisplayPort. There is also an issue where DCP will try to read destroyed/invisible framebuffers for some reason or another, causing IOVA faults. We will need to figure out how to get the new firmware to clear surfaces and stop reading the nonexistent framebuffers at the very least before shipping. Signed-off-by: James Calligeros <jcalligeros99@gmail.com>
Signed-off-by: James Calligeros <jcalligeros99@gmail.com>
Signed-off-by: James Calligeros <jcalligeros99@gmail.com>
Signed-off-by: James Calligeros <jcalligeros99@gmail.com>
Because we have not yet figured out how to clear surfaces, freeing old framebuffer references crashes DCP with IOVA errors. Don't destroy them for now so that we can continue working. Signed-off-by: James Calligeros <jcalligeros99@gmail.com>
Some of this is 0xaa padding, some of it is zeroes, and there is a conspicuous empty byte at the end. Signed-off-by: James Calligeros <jcalligeros99@gmail.com>
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Depends on #520
Implements the macOS 14.7 EPIC IPC interface for DCP and drops 12.x (partially, WIP). Required for M3 series (excluding Ultra).
Draft until below is addressed
TODO: