On Tue, Dec 13, 2016 at 11:40 PM, Maxime Ripard maxime.ripard@free-electrons.com wrote:
Hi,
On Tue, Dec 13, 2016 at 01:36:29AM +0100, Jernej Skrabec wrote:
This patch adds support for hdmi output. It is designed in the same way as video driver for older Allwinner SoCs.
First it checks if monitor is attached. If it is, recommended timings are read from EDID. After that, DE2, TCON and HDMI are configured according to this timings.
32MB of RAM is used for framebuffer. This is just enough to support 4K resolution.
SimpleFB is also supported by this driver.
Signed-off-by: Jernej Skrabec jernej.skrabec@siol.net
From the linux discussion, I recall that you said that the TCON was still the same, and the HDMI was something that could be shared with the Rockchip implementation. Did you look into sharing the TCON code (for example using a small "library" to share the functions) and to reuse Rockchip's HDMI code?
I second the first proposal. The TCON structure has not changed since the A10. Allwinner just removed the unused channels. Channel 1 is removed from the first TCON, and channel 0 is removed from the second TCON. So Allwinner is more or less committing to a static mapping for the display pipeline outputs.
Regards ChenYu