Exynos4412 HDMI test and exynos4412hdmi Test

Exynos4412 HDMI test and exynos4412hdmi Test

Platform: IBOX 4412

Linux: Linux-3.8.13 (from NanoPC from Odroid)

Driver: drivers/media/platform/s5p-tv

Compiler: arm-linux-gnueabihf-gcc 4.7.3

I. Code porting (the reference board has been completed)

Smdk4x12_devices [] added

Smdk4x12_machine_init

Ii. Menuconfig Configuration

Device Drivers --> Multimedia support ---> V4L platfomr devices ---> enable HDMI Configuration

3. kernel log output

[    2.225412] s5p-hdmiphy 8-0038: probe successful[    2.225427] s5p-hdmi exynos4-hdmi: probe successful[    2.225524] Samsung TV Mixer driver, (c) 2010-2011 Samsung Electronics Co., Ltd.[    2.225524][    2.225771] s5p-mixer s5p-mixer: probe start[    2.225860] s5p-mixer s5p-mixer: resources acquired[    2.225870] s5p-mixer s5p-mixer: added output 'S5P HDMI connector' from module 's5p-hdmi'[    2.225876] s5p-mixer s5p-mixer: module s5p-sdo is missing[    2.226067] s5p-mixer s5p-mixer: registered layer graph0 as /dev/video0[    2.318749] hub 2-0:1.0: state 7 ports 3 chg 0000 evt 0000[    2.569619] fb5: registered frame buffer emulation for /dev/video0[    2.575989] s5p-mixer s5p-mixer: registered layer graph1 as /dev/video1[    2.582567] fb6: registered frame buffer emulation for /dev/video1[    2.588809] s5p-mixer s5p-mixer: registered layer video0 as /dev/video2[    2.595313] fb7: registered frame buffer emulation for /dev/video2[    2.601294] s5p-mixer s5p-mixer: probe successful[    2.606300] usbcore: registered new interface driver uvcvideo

From the log, we can see the great point of HDMI.

It not only creates a standard V4L2 video device, but also creates a Framebuf device.

That is to say, we can not only control camera, but also control it like LCD buffer.

A total of six nodes are created, three video nodes and three fb nodes, which correspond to three video devices: graph0, graph1, and vp.

Iv. HDMI testing (1080 P)

Video mode test

Fb testing (the usb camera fills the obtained data into the frambuffer of HDMI, which is equivalent to previewing camera on hdmi)

5. Problem: currently, the default screen and background color are always green, and the configuration register does not work.