Hi Tomasz, On Thursday 27 December 2012 15:43:34 Tomasz Figa wrote: > On Monday 24 of December 2012 15:12:28 Laurent Pinchart wrote: > > On Friday 21 December 2012 11:00:52 Tomasz Figa wrote: > > > On Tuesday 18 of December 2012 08:31:30 Vikas Sajjan wrote: > > > > On 17 December 2012 20:55, Laurent Pinchart wrote: > > > > > Hi Vikas, > > > > > > > > > > Sorry for the late reply. I now have more time to work on CDF, so > > > > > delays should be much shorter. > > > > > > > > > > On Thursday 06 December 2012 10:51:15 Vikas Sajjan wrote: > > > > > > Hi Laurent, > > > > > > > > > > > > I was thinking of porting CDF to samsung EXYNOS 5250 platform, > > > > > > what I found is that, the exynos display controller is MIPI DSI > > > > > > based controller. > > > > > > > > > > > > But if I look at CDF patches, it has only support for MIPI DBI > > > > > > based Display controller. > > > > > > > > > > > > So my question is, do we have any generic framework for MIPI DSI > > > > > > based display controller? basically I wanted to know, how to go > > > > > > about porting CDF for such kind of display controller. > > > > > > > > > > MIPI DSI support is not available yet. The only reason for that is > > > > > that I don't have any MIPI DSI hardware to write and test the code > > > > > with :-) > > > > > > > > > > The common display framework should definitely support MIPI DSI. I > > > > > think the existing MIPI DBI code could be used as a base, so the > > > > > implementation shouldn't be too high. > > > > > > > > > > Yeah, i was also thinking in similar lines, below is my though for > > > > > MIPI DSI support in CDF. > > > > > > > > o MIPI DSI support as part of CDF framework will expose > > > > § mipi_dsi_register_device(mpi_device) (will be called mach-xxx-dt.c > > > > file ) > > > > § mipi_dsi_register_driver(mipi_driver, bus ops) (will be called > > > > from platform specific init driver call ) > > > > · bus ops will be > > > > o read data > > > > o write data > > > > o write command > > > > § MIPI DSI will be registered as bus_register() > > > > > > > > When MIPI DSI probe is called, it (e.g., Exynos or OMAP MIPI DSI) > > > > will initialize the MIPI DSI HW IP. > > > > > > > > This probe will also parse the DT file for MIPI DSI based panel, add > > > > the panel device (device_add() ) to kernel and register the display > > > > entity with its control and video ops with CDF. > > > > > > > > I can give this a try. > > > > > > I am currently in progress of reworking Exynos MIPI DSIM code and > > > s6e8ax0 LCD driver to use the v2 RFC of Common Display Framework. I > > > have most of the work done, I have just to solve several remaining > > > problems. > > > > Do you already have code that you can publish ? I'm particularly > > interested (and I think Tomi Valkeinen would be as well) in looking at > > the DSI operations you expose to DSI sinks (panels, transceivers, ...). > > Well, I'm afraid this might be little below your expectations, but here's > an initial RFC of the part defining just the DSI bus. I need a bit more > time for patches for Exynos MIPI DSI master and s6e8ax0 LCD. No worries. I was particularly interested in the DSI operations you needed to export, they seem pretty simple. Thank you for sharing the code. > The implementation is very simple and heavily based on your MIPI DBI > support and existing Exynos MIPI DSIM framework. Provided operation set is > based on operation set used by Exynos s6e8ax0 LCD driver. Unfortunately > this is my only source of information about MIPI DSI. -- Regards, Laurent Pinchart -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
