Unknown user в 08:15, 15 октября 2014

2014-10-15T08:15:10Z

Новая страница

According to macau, audio over hdmi works well in android. Lunatic_charade confirmed this info.

Me (stuw) and zombah made a patch for hdmi audio (https://dl.dropboxusercontent.com/u/40761340/www/ac100/patches/paz00-spdif.patch, started from [https://lists.launchpad.net/ac100/msg00153.html juliank's message] and [http://codereview.chromium.org/6624032 Seaboard: Add SPDIF/HDMI support patch], our patch based on [https://gitorious.org/~zombah/ac100/zombahs-marvin24s-kernel/blobs/linux-tegra-nv-ac100-3.1-exp/arch/arm/mach-tegra/board-ventana.c#line134 board-ventana.c] и [https://gitorious.org/~zombah/ac100/zombahs-marvin24s-kernel/blobs/linux-tegra-nv-ac100-3.1-exp/sound/soc/tegra/tegra_wm8903.c tegra_wm8903.c]). zombah tried the patch on android 4.1 with audio only (tinyplay -D 0 -d 1, IIRC) and didn't get working audio (maybe because there is some issues with android).

'''Linux (l4t-r16-r2-ac100)'''
http://gitorious.org/~marvin24/ac100/marvin24s-kernel/commit/621832ee7e5cfbd8e7ff3dd494f64fc8d32ddcdb
http://gitorious.org/~marvin24/ac100/marvin24s-kernel/commit/f3c6f0ff087a08c73437161dfe129fe466235c41
<pre>
tegradc tegradc.1: hdmi: can't set audio to 32000 at 82000000 pix_clock
</pre>
<pre>
< srwarren> stuw, HDMI audio should be able to work at pretty much any pixel clock frequency.
The L4T kernel probably only supports it in a pre-define set of cases, i.e. specific modes
such as 1080p, 720p, etc. If you take a look in the ChromeOS kernel, perhaps their 3.2 branch,
you should find code to make the calculation more general.
</pre>
[https://kernel.googlesource.com/pub/scm/linux/kernel/git/olof/misc/+log/b08897d63c5cef715569ad98084e31a3ff1be881/drivers/video/tegra chromeos-tegra-3.2]

'''Android 4.x (android-spdif)'''
http://gitorious.org/~zombah/ac100/zombahs-marvin24s-kernel/commit/40e3246325ebf6d1a99ca91f83434e59e3c78077
http://gitorious.org/~zombah/ac100/zombahs-marvin24s-kernel/commit/f2a7ec34a5befefef4a01f4b5b277871584c7f97
https://github.com/zombah/android_device_toshiba_paz00-common/commit/0ccd89d81839dc7faac4d9863b172793f0ea293c
<pre>
stuw> звук по hdmi есть? вах )
<zombah> есть да только что ролик h264 посмотрел норм звучит
</pre>

===Old===

Analysis
[[File:paz00_alc5632_hdmi_audio.PNG]]

[[File:paz00_alc5632_hdmi_audio_gpios.PNG]]

Hdmi audio - История изменений

Unknown user в 08:15, 15 октября 2014