Proposal for a new video driver for Qualcomm upcoming SOCs

[vgarodia]

Hi All,

There is an existing video driver for Qualcomm SOCs [1]. There is a need 
for a separate driver for the new generations of video hardware in 
Qualcomm SOCs. It is needed, primarily for below reasons:-

1. HFI 2.0 interface (driver<->firmware interface) is a new non-backward 
compatible interface.
   a. HFI 2.0 is designed to suit future video hardware generations.
   b. Older interface (HFI 1.0) is supported till MSM8350 (SD 835). Any 
new video hardware would be supported *only* with the
      new HFI 2.0.

2. Video firmwares, which are based on HFI 1.0, were designed to follow 
khronos openmax IL 1.1.2 specification. Video firmware
   interface HFI 2.0 is designed based on v4l2 stateful codec 
specification.

This request is to share your suggestions or any queries to discuss on 
this proposal.
Incase any aspect to consider, before we start implementing the new 
driver.

[1] 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/media/platform/qcom/venus

Regards,
Vikash