[v3,0/2] Fixes for omapdrm console

Message

Tony Lindgren Feb. 28, 2024, 6:35 a.m. UTC

Here are two fixes for omapdrm for missing drm_framebuffer_funcs.dirty
that needs to be paired with omap_framebuffer_dirty(), and to add
FB_GEN_DEFAULT_DEFERRED_DMAMEM_OPS so things behave as earlier with
drm_fb_helper_sys_write(). Without these fixes, the console won't update
for the command mode displays. And likely mmap() using writes can miss
updates as noted by Thomas.

Regards,

Tony

Changes since v2:
- Fix cache issue noted by Tomi using custom omap_fbdev_fb_mmap() as
  suggested by Thomas

- Add FB_DMAMEM_HELPERS_DEFERRED Kconfig option and use it for omapdrm
  as noted by Thomas

Changes since v1:

- Add FB_GEN_DEFAULT_DEFERRED_DMAMEM_OPS to use with
  FB_DEFAULT_DEFERRED_OPS as suggested by Thomas

Tony Lindgren (2):
  drm/omapdrm: Fix console by implementing fb_dirty
  drm/omapdrm: Fix console with deferred ops

 drivers/gpu/drm/omapdrm/Kconfig      |  2 +-
 drivers/gpu/drm/omapdrm/omap_fbdev.c | 40 +++++++++++++++++++++++-----
 drivers/video/fbdev/core/Kconfig     |  6 +++++
 include/linux/fb.h                   |  4 +++
 4 files changed, 45 insertions(+), 7 deletions(-)

Comments

Tomi Valkeinen March 18, 2024, 11:45 a.m. UTC | #1

Hi,

On 28/02/2024 08:35, Tony Lindgren wrote:
> Here are two fixes for omapdrm for missing drm_framebuffer_funcs.dirty
> that needs to be paired with omap_framebuffer_dirty(), and to add
> FB_GEN_DEFAULT_DEFERRED_DMAMEM_OPS so things behave as earlier with
> drm_fb_helper_sys_write(). Without these fixes, the console won't update
> for the command mode displays. And likely mmap() using writes can miss
> updates as noted by Thomas.
> 
> Regards,
> 
> Tony
> 
> Changes since v2:
> - Fix cache issue noted by Tomi using custom omap_fbdev_fb_mmap() as
>    suggested by Thomas
> 
> - Add FB_DMAMEM_HELPERS_DEFERRED Kconfig option and use it for omapdrm
>    as noted by Thomas
> 
> Changes since v1:
> 
> - Add FB_GEN_DEFAULT_DEFERRED_DMAMEM_OPS to use with
>    FB_DEFAULT_DEFERRED_OPS as suggested by Thomas
> 
> Tony Lindgren (2):
>    drm/omapdrm: Fix console by implementing fb_dirty
>    drm/omapdrm: Fix console with deferred ops
> 
>   drivers/gpu/drm/omapdrm/Kconfig      |  2 +-
>   drivers/gpu/drm/omapdrm/omap_fbdev.c | 40 +++++++++++++++++++++++-----
>   drivers/video/fbdev/core/Kconfig     |  6 +++++
>   include/linux/fb.h                   |  4 +++
>   4 files changed, 45 insertions(+), 7 deletions(-)
> 

Looks fine to me, I'll apply to drm-misc-next.

  Tomi