#asahi-dev on 2023-02-10 — irc logs at oftc.irclog.whitequark.org

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07:14 <arnd> lina: ah, makes sense. Accessing the pointer would be good I think. Maybe use get_unaligned() for reading the data then, it's only a few words anyway so it shouldn't clutter up the code too much, and it will document why it's done

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08:07 <arnd> lina: actually just marking the structures as __packed (with a comment) should be sufficient to make the compiler do the right thing for unaligned access on all theoretical target architectures

08:08 <arnd> I usually tell driver writers to avoid __packed annotations because it makes accesses more expensive when the structure is known to be aligned, but here is sounds like the right thing to do

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11:13 <lina> arnd: Yeah, this is a fatal error path anyway so __packed makes perfect sense ^^

11:27 <jannau> bt pairing key import from nvram works but needs for some reason an explicit `bluetoothctl connect $MAC`

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14:35 <povik> i started implementing epic in kernel's dcp driver to get to the audio interface

14:35 <povik> now it occurred to mey that one of you, jannau or sven, could have already done the same in bringing up dcpext

14:36 <jannau> povik: sven already implemented epic for dcpext

14:36 <povik> ah...

14:36 <povik> should have checked first :/

14:37 <jannau> latest rebase is in https://github.com/jannau/linux/tree/asahi-6.2-rc3-7_dp-altmode-wip

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15:08 <sven> yeah, that implementation was required for dptx

15:09 <sven> and I cursed C multiple times while writing it due to that slightly awkward ring buffer

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16:17 <jannau> ChaosPrincess: please add a LICENSE to asahi-nvram. I'd like to package it for asahi and integrate the bt device/key syncing

16:17 <ChaosPrincess> which one would you want?

16:20 <jannau> I don't care. we use MIT for most sw if there are no external requirements

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16:25 <jannau> MIT is also the most popular among the dependencies

16:26 <ChaosPrincess> done

16:26 <jannau> thanks

16:29 <jannau> ChaosPrincess: missing 'license = "MIT"' in Cargo.toml

16:32 <ChaosPrincess> done

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18:08 <jannau> is bluez installed in the minimal image?

18:16 <as400> jannau: yes it is

19:48 <povik> aaaaargh

19:48 <povik> sio firmware serrors out if you trigger a dpaudio transfer, and the *SPI_P* power domain is disabled

19:49 <povik> don't ask how much time getting to that root cause cost me...

19:49 <povik> SPI_P, out of all domains...

19:51 <jannau> sio <-> spi hid, kernel cmd line parameter pd_ignore_unused is useful when you suspect power related issue

19:54 <povik> thanks, that may come useful

19:54 <povik> had to patch the pwrstate driver to the same effect

19:59 <ChaosPrincess> jannau: some nitpicks on that pr, but in general looks good, will you fix those yourself, or do you want me to make the changes and merge?

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20:12 <jannau> ChaosPrincess: fixed

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21:14 * povik got an audiobook version of 'the wizard of oz' playing over hdmi from asahi

21:14 <povik> good news, the fake dma works!

21:15 <povik> i am making the requisite dcp calls from userspace over debugfs, so still a lot of work remaining

21:15 <povik> but the sio driver is coming into shape at least

21:22 <j`ey> povik: follow the yellow hdmi road!

21:37 <povik> actually, i am not familiar with the book :D

21:37 <povik> it just happens to be what i have on disk

21:41 <mps> povik: OT but this book is very good, read it when you find time

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22:55 <alyssa> povik: somewhere over the rainbow, HDMI

22:56 <alyssa> there's a spec that i'm scared of, hardly a lullaby

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