<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - HDMI port is not working on current KMS driver with VX900 platform" href="https://bugs.freedesktop.org/show_bug.cgi?id=94528#c4">Comment # 4</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - HDMI port is not working on current KMS driver with VX900 platform" href="https://bugs.freedesktop.org/show_bug.cgi?id=94528">bug 94528</a> from <a class="email" href="mailto:huangran@iscas.ac.cn" title="HuangRan <huangran@iscas.ac.cn>"> HuangRan</a> <pre>Hi Kevin, > > The weird thing about VX900 chipset hardware programming documentation is > that it contains register information for DisplayPort, but not HDMI. > I do not know how James Simmons wrote the code, if the above assumption is > true. Yup, I see the same problem with Chrome9 HD OGPM PartI document, there is no introduction for HDMI registers. By contrast, there is a group of registers for DVI/DP/LVDS. But from VIA's website link, there is a diagram which shows HDMI/DP is supported.(<a href="http://www.viatech.com/en/silicon/chipsets/vx900/">http://www.viatech.com/en/silicon/chipsets/vx900/</a>) > That being said, VIA Technologies does have a quasi-open source 2D device > driver code on their website for Chrome 9 family. > > <a href="http://download.viatech.com/en/support/driversSelect.jsp">http://download.viatech.com/en/support/driversSelect.jsp</a> > > Select "Linux (current)" and VX900 chipset. > At least for the DRM module which supports KMS, it is open source. > Check out via_chrome9_hdac_renew.c where it is apparently accessing the > registers related to HDMI. That is very interesting:). I have not gotten this link before to download binary linux driver for VX700/VX855/VX900 chipset integrated graphics card. After I download the driver for VX900, I see in via_chrome9_hdac_renew.c file, including via_chrome9_connector.c, via_chrome9_encoder.c files, there are HDMI related settings with mode setting work. So does it mean current OPGM is not enough for all chipset registers? I doubt it... By the way, so can I understand that current code in <a href="https://cgit.freedesktop.org/openchrome/drm-openchrome/tree/drivers/gpu/drm/via">https://cgit.freedesktop.org/openchrome/drm-openchrome/tree/drivers/gpu/drm/via</a> is coming from here for mode setting? But it seems 2D/Xv part is in binary format and the driver can not support 3D acceleration(OpenGL/ES). Thanks, Frank</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>