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drm/bochs: Implement struct drm_mode_config_funcs.mode_valid

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The implementation of struct drm_mode_config_funcs.mode_valid verifies
that enough video memory is available for a given display mode. This
replaces similar functionality in bochs_connector_mode_valid().

v2:
	* remove bochs_connector_mode_valid(), which now serves no purpose

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200203155258.9346-3-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann 2020-02-03 16:52:56 +01:00
parent 80f7c3f776
commit 8bc5732cad
1 changed files with 1 additions and 20 deletions
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21
drivers/gpu/drm/bochs/bochs_kms.c
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@ -83,28 +83,8 @@ static int bochs_connector_get_modes(struct drm_connector *connector)
return count;
}
static enum drm_mode_status bochs_connector_mode_valid(struct drm_connector *connector,
struct drm_display_mode *mode)
{
struct bochs_device *bochs =
container_of(connector, struct bochs_device, connector);
unsigned long size = mode->hdisplay * mode->vdisplay * 4;
/*
* Make sure we can fit two framebuffers into video memory.
* This allows up to 1600x1200 with 16 MB (default size).
* If you want more try this:
* 'qemu -vga std -global VGA.vgamem_mb=32 $otherargs'
*/
if (size * 2 > bochs->fb_size)
return MODE_BAD;
return MODE_OK;
}
static const struct drm_connector_helper_funcs bochs_connector_connector_helper_funcs = {
.get_modes = bochs_connector_get_modes,
.mode_valid = bochs_connector_mode_valid,
};
static const struct drm_connector_funcs bochs_connector_connector_funcs = {
@ -148,6 +128,7 @@ bochs_gem_fb_create(struct drm_device *dev, struct drm_file *file,
const struct drm_mode_config_funcs bochs_mode_funcs = {
.fb_create = bochs_gem_fb_create,
.mode_valid = drm_vram_helper_mode_valid,
.atomic_check = drm_atomic_helper_check,
.atomic_commit = drm_atomic_helper_commit,
};