samsung-zeroltexx: Fix audio (fix memory alignment problem)

samsung-zeroltexx: Fix audio (fix memory alignment issue that led to crashes).

The compile switches relating to memory alignment seem necessary to prevent a crash in DMA transfers (gcc6 instead of gcc10 would also have fixed this; cf. my earlier comment in !2105 (comment 593597958)).

Alsa audio playback works fine after this fix. I have not yet fully figured out the mixer functionality (>700 controls!) yet, but with these example commands, audio output is routed to the earpiece:

# Audio on receiver:
amixer cset name='HPOUT3L Input 1' AIF1RX1
amixer cset name='HPOUT3 Digital Switch' on,on

aplay /usr/share/sounds/alsa/Front_Center.wav

With this example, audio output is routed to the speaker:

# Audio on Speaker:
amixer cset name="AIF4TX1 Input 2" AIF1RX1
amixer cset name="AIF4TX2 Input 2" AIF1RX2
amixer cset name='SPK Enable Switch' Enable
amixer cset name='SPK Switch' on
amixer cset name='SPK out' 1

echo "Hello, World!" | flite

added 1 commit

• 6360701b - samsung-zeroltexx: Fix audio (missing file added to git)

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By st s on 2021-06-19T18:17:52

marked this merge request as ready

By st s on 2021-06-19T23:39:39

changed the description

By st s on 2021-06-19T23:39:39

changed the description

By st s on 2021-06-19T23:40:05

added category::device + 1 deleted label

The two commits in this MR should be squashed. If you need help with that, let us know!

By clayton craft on 2021-06-23T05:57:19

added 38 commits

• 6360701b...c78c633a - 37 commits from branch postmarketOS:master
• db675760 - samsung-zeroltexx: Fix audio (fix memory alignment issue that led to crashes...

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By st s on 2021-06-25T23:21:57

changed title from samsung-zeroltexx: Fix audio (adding Seiren firmware and fix memory alignment problem) to samsung-zeroltexx: Fix audio (fix memory alignment problem)

By st s on 2021-06-25T23:35:26

changed the description

By st s on 2021-06-25T23:35:26

approved this merge request

By Alexey Min on 2021-06-25T23:43:02

added 6 commits

• db675760...424528a7 - 5 commits from branch postmarketOS:master
• 8efe40ce - samsung-zeroltexx: fix audio (MR 2263)

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By Dylan Van Assche on 2021-06-26T17:50:30

approved this merge request

By Dylan Van Assche on 2021-06-26T17:50:38

resolved all threads

By Dylan Van Assche on 2021-06-26T17:50:49

enabled an automatic merge when the pipeline for 8efe40ce succeeds

By Dylan Van Assche on 2021-06-26T17:50:51

merged