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Initial support for the ExtraBytes VIDC control list item
Jeffrey Lee authored 
Detail:
  The ExtraBytes control list item can be used to add padding between framebuffer rows.
  When the kernel sees a VIDC list containing this item, it will now adjust the LineLength and ScreenSize mode variables accordingly, with the end result that the correct amount of memory will be allocated for the framebuffer and the OS will render into it correctly.
  Files changed:
  - hdr/KernelWS - Add DisplayLineLength variable to allow the correct LineLength value to be preserved when screen output is redirected to a sprite
  - s/vdu/vdudriver - Make ModeChangeSub initialise DisplayLineLength before calling SwitchOutputToSprite. Update PushModeInfo to take ExtraBytes into account when calculating LineLength and ScreenSize.
  - s/vdu/vdugrafl - Adjust SwitchOutputToSprite to use DisplayLineLength when restoring screen output
  - s/vdu/vduwrch - Fix full-screen CLS to not write to the padding bytes
Admin:
  Tested on Raspberry Pi 3


Version 5.82. Tagged as 'Kernel-5_82'
90cc1d38
Name Last commit Last update
..
ExportVals 32-bit Kernel.
ARMops Support for ARMv8
Copro15ops Add new ARMops. Add macros which map the ARMv7/v8 cache/TLB maintenance mnemonics (as featured in recent ARM ARMs) to MCR ops.
EnvNumbers Import from cleaned 360 CD
EtherDevice Change struct layouts for C module compatibility
HALDevice New HAL device ID reservations
HALEntries Add OS_ReadSysInfo 9,6 and 9,7
KernelWS Initial support for the ExtraBytes VIDC control list item
KeyWS Delete STB code
ModHand Resolve 2x header clashes
OSEntries Teach the kernel about different memory attributes
OSMem Implement support for cacheable pagetables
OSMisc Expose CLREX via OS_PlatformFeatures
OSRSI6 Add initial support for "physical memory pools"
Options Implement support for cacheable pagetables
PL310 Add ARMops for PL310 L2 cache controller
PublicWS Fix HiProcVecs build. Remove old-style PublicWS definitions.
RISCOS Resync with allocations database (added symbolic names for Internet Event subreason codes)
VIDCList Reverse interlace deprecation decision
Variables Import from cleaned 360 CD
VduExt Improve Service_DisplayStatus, Service_DisplayChanged functionality
VideoDevice Update VDU HAL device for new OMAPVideo driver, fix MVA-based cache/TLB maintenance ops aborting on ARMv7, add warning to VDU driver about inconsistent state variables during screen mode changes