[PATCH 0/4] drm/mgag200: Handle VIDRST from BMC helpers

[Thomas Zimmermann]

Am 03.07.24 um 15:40 schrieb Thomas Zimmermann:
> The VIDRST pin controls CRTC synchronization with an external clock

Jocelyn, see sec 5.6 of the G200 programming manual for details on this.

> chip, such as a BMC or TV encoder. This patchset separates the CRTC
> state from the BMC state and streamlines the driver code.
>
> Patch one moves the VIDRST programming logic into the CRTC modesetting
> code. The status of the rsp flag bits is fully controlled by an active
> BMC encoder. Without BMC, the CRTC ignores VIDRST by default.
>
> During a modeset operation on the CRTC, the BMC has to stop scanning
> out the display signal. Patch 2 integrates the logic controlling the
> BMC scanout with the BMC encoder helpers.
>
> Patches 3 and 4 then remove and rename obsolete and unused artifacts
> within the mgag200 driver.
>
> Thomas Zimmermann (4):
>    drm/mgag200: Only set VIDRST bits in CRTC modesetting
>    drm/mgag200: Start/stop BMC scanout in BMC encoder helpers
>    drm/mgag200: Remove vidrst callbacks from struct mgag200_device_funcs
>    drm/mgag200: Rename BMC vidrst names
>
>   drivers/gpu/drm/mgag200/mgag200_bmc.c     | 50 +++++++++++++++++++----
>   drivers/gpu/drm/mgag200/mgag200_drv.h     | 29 ++++---------
>   drivers/gpu/drm/mgag200/mgag200_g200er.c  |  8 +---
>   drivers/gpu/drm/mgag200/mgag200_g200ev.c  |  8 +---
>   drivers/gpu/drm/mgag200/mgag200_g200ew3.c |  2 -
>   drivers/gpu/drm/mgag200/mgag200_g200se.c  |  8 +---
>   drivers/gpu/drm/mgag200/mgag200_g200wb.c  |  2 -
>   drivers/gpu/drm/mgag200/mgag200_mode.c    | 24 ++++-------
>   8 files changed, 62 insertions(+), 69 deletions(-)
>

-- 
--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Frankenstrasse 146, 90461 Nuernberg, Germany
GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman
HRB 36809 (AG Nuernberg)