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From: K, Mythri P <mythripk <at> ti.com>
Subject: RE: [PATCH 0/2]OMAP:DSS:RFC for HDMI in OMAP4
Newsgroups: gmane.linux.ports.arm.omap
Date: Tuesday 7th September 2010 10:22:42 UTC (over 7 years ago)
Hi Tomi,
Can you please comment on the below patch series?

Thanks and regards,

> -----Original Message-----
> From: K, Mythri P
> Sent: Monday, August 23, 2010 2:48 PM
> To: [email protected]
> Cc: [email protected]; K, Mythri P
> Subject: [PATCH 0/2]OMAP:DSS:RFC for HDMI in OMAP4
> From: Mythri P K 
> This patch is a outline of how the HDMI support is added to OMAP4.
> HDMI is a driver that is similar to the VENC or the DSI driver to
> support
> HDMI/DVI sink device.
> The current Design adheres to the DSS2 Architecture.
> It is split into the HDMI DSS driver and HDMI panel Driver.
> HDMI DSS driver  Located in drivers/video/omap2/dss/hdmi.c
> is responsible for OMAP related configuration such as listening to
> the
> DSS_HDMI irq which signals changes  such as Hot-plug detect ,
> Physical attach/detach.
> This driver is responsible to calculate the PLL values based on the
> TV resolution  that is selected.
> Yet another functionality is to call necessary configuration for the
> Mux/GPIO settings.
> HDMI Panel Driver is located in
> drivers/video/omap2/displays/hdmi_omap4_panel.c.
> This is a panel driver which acts as the HDMI source  and is
> responsible for all the configuration of the HDMI, based on the
> parameters read from the EDID of the sink device.
> It registers hdmi driver to the omap_dss bus and calls the
> functionality
> of the HDMI DSS driver.
> This driver is responsible for configuration of the HDMI IP, which
> are:
> 	1. Configuration of the PHY registers.
> 	2. Configuration of the PLL registers and setting of the TMDS
> clock.
> 	3. Configuration of the DDC to read the EDID data when
> available.
> 	4. Configuration of the core reigsters to set:
> 		a. set the video registers to the timing and format that
> 			is selected.
> 		b. set the audio reigsters based on the EDID value read
> and
> 			user selected parameters.
> 		c. Set the AVI info frame reigsters to configure the
> auxilary
> 			info frame which are repeated.
> It is also provides the interface for users
> 	1.To read the EDID contents and also confiure the timings
> based on EDID.
> 	2.To configure AVI Inforframe Based on the the EDID(sink
> capability).
> Mythri P K (2):
>   OMAP:DSS:Patch to add support for HDMI as panel driver
>   OMAP:DSS:Patch to add HDMI DSS driver support
>  drivers/video/omap2/displays/hdmi_omap4_panel.c | 1443
> +++++++++++++++++++++++
>  drivers/video/omap2/displays/hdmi_omap4_panel.h |  672 +++++++++++
>  drivers/video/omap2/dss/hdmi.c                  |  292 +++++
>  3 files changed, 2407 insertions(+), 0 deletions(-)
>  create mode 100644 drivers/video/omap2/displays/hdmi_omap4_panel.c
>  create mode 100644 drivers/video/omap2/displays/hdmi_omap4_panel.h
>  create mode 100644 drivers/video/omap2/dss/hdmi.c

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