[Intel-gfx] [PATCH 0/7] Add lspcon support

[Sharma, Shashank]

Thanks Ville.
I will have a look at the series you posted, and if that's the case, 
will try to merge this implementation on top of yours.

Regards
Shashank

On 3/22/2016 9:50 PM, Ville Syrjälä wrote:
> On Tue, Mar 22, 2016 at 07:55:01PM +0530, Shashank Sharma wrote:
>> LSPCON is essentially an active DP-HDMI convertor. It has
>> two modes of operations:
>> - ls mode (for upto HDMI 1.4 outputs, 4k at 30 resoution / 297MHz)
>> - pcon mode (for upto HDMI 2.0 outputs, 4k at 60 resolution / 600 MHz)
>>
>> This patch set adds support for LS mode of operation for GEN9
>> platforms. It adds a new connector for lspcon, whcih is a mix
>> and match of DP and HDMI connectors, matching dual personality
>> of lspcon devices.
>>
>> Notes:
>> - Daniel Vetter gave a review comment on LSPCON design, to make
>>    it a separate encoder. This patch set tries to match that expectations
>>    with a separate connector, as DDI encoder already fulfills all the
>>    requirements of a lspcon_encoder.
>> - This patch set tagrets LS mode of operations only.
>> - PCON mode of operation will be added later, based on the requirements.
>>    This is to primarily unbloc Linux devices with LSPCON port.
>> - This patch set is tested with BXT RVP + drm-nightly
>> - As we redesigned this code, to meet the review comments, this is a working
>>    patch set, but not upto commercial quality yet.
>
> Quick glance tells me this is more or less just an in driver implementation
> of the DP dual mode standard at this point. I recently posted some patches [1]
> that implement dual mode support as a helper. So you should check it out
> and try to layer whatever lspcon specifics on top of that.
>
> The only thing missing from my patches was basically using i2c-over-aux
> instead of gmbus for type2 adapters, but that's mostly just a matter of
> passing the right i2c adapter to places.
>
> [1] https://lists.freedesktop.org/archives/dri-devel/2016-February/101494.html
>
>>
>> Shashank Sharma (7):
>>    drm/i915: add lspcon vbt bit parsing
>>    drm/i915: Add lspcon data structures
>>    drm/i915: Add new lspcon file
>>    drm/i915: Add and initialize lspcon connector
>>    drm/i915: Add and register lspcon connector functions
>>    drm/i915: Add lspcon core functions
>>    drm/i915: Add lspcon hpd handler
>>
>>   drivers/gpu/drm/i915/Makefile         |   3 +-
>>   drivers/gpu/drm/i915/i915_drv.h       |   1 +
>>   drivers/gpu/drm/i915/intel_bios.c     |  42 +++
>>   drivers/gpu/drm/i915/intel_ddi.c      |   6 +
>>   drivers/gpu/drm/i915/intel_dp.c       |  31 ++
>>   drivers/gpu/drm/i915/intel_drv.h      |  35 +-
>>   drivers/gpu/drm/i915/intel_hdmi.c     |  25 +-
>>   drivers/gpu/drm/i915/intel_hotplug.c  |   2 +-
>>   drivers/gpu/drm/i915/intel_lspcon.c   | 620 ++++++++++++++++++++++++++++++++++
>>   drivers/gpu/drm/i915/intel_vbt_defs.h |   1 +
>>   10 files changed, 759 insertions(+), 7 deletions(-)
>>   create mode 100644 drivers/gpu/drm/i915/intel_lspcon.c
>>
>> --
>> 1.9.1
>>
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>