Re: [PATCH 00/33] OMAPDSS: platform_enable/disable callback removal from panel drivers

Hi,

On Wednesday 13 February 2013 10:16 PM, Tony Lindgren wrote:

* Archit Taneja [off-list ref] [130213 06:26]:

quoted

init functions in omap board files request panel specific gpios, and provide
functions which omapdss panel drivers call to enable or disable them.

Instead of the board files requesting these gpios, they should just pass the
platform specific data(like the gpio numbers), the panel should retrieve the
platform data and request the gpios. Doing this prevents the need of the panel
driver calling platform functions in board files.

Panel drivers have their own platform data struct, and the board files populate
these structs and pass the pointer to the 'data' field of omap_dss_device. This
work will make it easier for the panel drivers be more adaptable to the
DT model.

There is also removal of passing panel reset_gpio numbers through
omap_dss_device struct directly, reset gpios are passed through platform data
only.

To avoid merge conflicts and dependencies between drivers and core
Soc code, please break thes kind of patches into following parts:

1. Any platform_data header changes needed so both I and Tomi
    can pull it in as needed.

2. Changes to DSS drivers. Please keep stubs around for the
    board specific callback functions so omap2plus_defconfig
    won't break with just #1 merged into arm soc tree.

The build won't break, and the kernel will boot up properly, but the 
panels won't work till the time #3 is also merged,

3. All the arch/arm/*omap* changes based on #1 above to
    drop obsolete callback functions and add new pdata if still
    needed. This needs to build and boot on #1 so I can merge
    this in via arm soc tree.

4. Any .dts changes needed.

We don't have any .dts changes for DSS as of now.

I'll split the patches accordingly.

Thanks,
Archit