I would like being able to test patches on the Droid 4 without having to carry a development phone around all the time. Testing on my day-to-day phone is not a good idea, since that means being offline during the tests. A simple solution would be to do the testing remotely, which should also allow doing automated tests for KernelCI. Unfortunatley doing this on a phone is a bit harder than on an average development board due to the hardware design.
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Multiple people asked camera related questions during my talk as FOSDEM (and after it). I did some basic reverse engineering, so let me share what I know.
The Droid 4 works with a OMAP4430, which has a imaging subsystem (ISS). It is documented quite well in the datasheet and there is a Linux kernel driver available in staging (omap4iss), which was written by Laurent Pinchart (thanks!). This module provides two MIPI CSI-2 interfaces to connect camera sensors.
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I gave a talk at FOSDEM about the current mainline kernel support for the Droid 4 and its open issues. If you follow this blog you probably already know the information I presented and I’m not a good presenter (sorry!). If you are interested anyways, you can find the recording and my slides on the following here:
Slides Video Recording (mp4) Video Recording (WebM/VP9) Video Recording (Youtube) – Sebastian
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Linux kernel v4.13 was released and - like in the v4.12 release - 12 Collabora developers contributed a total of 72 patches. In addition Collabora developers provided 25 Reviewed-by tags and 10 Tested-by tags. Furthermore 83 patches received a Signed-off-by tag from Collabora peoples. Again, general information about the merge window is available by LWN.net in form of the following articles: part 1 and part 2.
Now here is a look at the specific changes made by Collaborans.
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It has been some time since my last post about the Droid 4. 4.13 will most likely be released next week, so let’s have a look at newly added features related to the Droid 4:
crypto acceleration for AES and 3DES support for ISL29030 (proximity and ambient light sensor) USB phy support battery monitoring support bluetooth Unfortunately the list for 4.14 will be a lot shorter (or even empty), since most other submissions are still in review (or need work).
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The 4.12 merge window will most likely close on Sunday, so its a good time to check the Droid 4 status matrix. This merge window lots of changes were queued:
New drivers: real time clock (RTC), power button, analogue digital converter (ADC), battery charger, LEDs (RGB, capslock status, android buttons)
DTS additions: LCD (no driver yet), HDMI, Keyboard/LCD backlight (no driver yet), Touchscreen, Temperature sensor, Accelerometer, Compass, Regulators, RTC, Power button, ADC, USB PHY (no driver yet), Battery charger, LEDs, Keyboard, Poweroff, USB configuration for modems
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