[PATCH v2 0/4] drm/vram: Check display modes against available VRAM

[Thomas Zimmermann]

This adds drm_vram_helper_mode_valid(), which tests a display mode against
the available video memory. It's a helper function to sort out display
modes that cannot be used because of a lack of video memory.

The ast driver already implemented this test for a while. The patchset
converts ast over to the helper and adds the test to the over drivers
that use VRAM helpers; except mgag200. I left out mgag200 as it doesn't
have atomic modesetting yet and needs adjustments to memory management
first.

v2:
	* WARN_ON if VRAM memory manager has not been initialized (Daniel)
	* unexport drm_vram_helper_mode_valid_internal() (Daniel)
	* documentation formatting (Daniel)
	* remove bochs_connector_mode_valid() (Gerd)

Thomas Zimmermann (4):
  drm/vram: Add helpers to validate a display mode's memory requirements
  drm/bochs: Implement struct drm_mode_config_funcs.mode_valid
  drm/hibmc: Implement struct drm_mode_config_funcs.mode_valid
  drm/vboxvideo: Implement struct drm_mode_config_funcs.mode_valid

 drivers/gpu/drm/ast/ast_main.c              | 24 +-------
 drivers/gpu/drm/bochs/bochs_kms.c           | 21 +------
 drivers/gpu/drm/drm_gem_vram_helper.c       | 61 +++++++++++++++++++++
 drivers/gpu/drm/hisilicon/hibmc/hibmc_ttm.c |  1 +
 drivers/gpu/drm/vboxvideo/vbox_mode.c       |  1 +
 include/drm/drm_gem_vram_helper.h           |  9 +++
 6 files changed, 74 insertions(+), 43 deletions(-)

--
2.25.0