github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-25 23:52:08 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

drm/ast: Only look up VBIOS mode on full modesets

Browse Source 
Only look up the VBIOS mode during atomic_check if the display mode
changes. For page flips, the previous settings still apply. Avoids the
runtime overhead of looking up the VBIOS mode on each page flip.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20250131092257.115596-17-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann 2025-01-31 10:21:16 +01:00
parent ec1d13fa90
commit 0c5f9cb678
1 changed files with 24 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

46
drivers/gpu/drm/ast/ast_mode.c
View File

@ -996,32 +996,34 @@ static int ast_crtc_helper_atomic_check(struct drm_crtc *crtc,
}
/*
* Find the VBIOS mode and adjust the DRM display mode accordingly.
* Find the VBIOS mode and adjust the DRM display mode accordingly
* if a full modeset is required. Otherwise keep the existing values.
*/
if (drm_atomic_crtc_needs_modeset(crtc_state)) {
vmode = ast_vbios_find_mode(ast, &crtc_state->mode);
if (!vmode)
return -EINVAL;
ast_state->vmode = vmode;
vmode = ast_vbios_find_mode(ast, &crtc_state->mode);
if (!vmode)
return -EINVAL;
ast_state->vmode = vmode;
if (vmode->flags & HBorder)
hborder = 8;
if (vmode->flags & VBorder)
vborder = 8;
if (vmode->flags & HBorder)
hborder = 8;
if (vmode->flags & VBorder)
vborder = 8;
adjusted_mode->crtc_hdisplay = vmode->hde;
adjusted_mode->crtc_hblank_start = vmode->hde + hborder;
adjusted_mode->crtc_hblank_end = vmode->ht - hborder;
adjusted_mode->crtc_hsync_start = vmode->hde + hborder + vmode->hfp;
adjusted_mode->crtc_hsync_end = vmode->hde + hborder + vmode->hfp + vmode->hsync;
adjusted_mode->crtc_htotal = vmode->ht;
adjusted_mode->crtc_hdisplay = vmode->hde;
adjusted_mode->crtc_hblank_start = vmode->hde + hborder;
adjusted_mode->crtc_hblank_end = vmode->ht - hborder;
adjusted_mode->crtc_hsync_start = vmode->hde + hborder + vmode->hfp;
adjusted_mode->crtc_hsync_end = vmode->hde + hborder + vmode->hfp + vmode->hsync;
adjusted_mode->crtc_htotal = vmode->ht;
adjusted_mode->crtc_vdisplay = vmode->vde;
adjusted_mode->crtc_vblank_start = vmode->vde + vborder;
adjusted_mode->crtc_vblank_end = vmode->vt - vborder;
adjusted_mode->crtc_vsync_start = vmode->vde + vborder + vmode->vfp;
adjusted_mode->crtc_vsync_end = vmode->vde + vborder + vmode->vfp + vmode->vsync;
adjusted_mode->crtc_vtotal = vmode->vt;
adjusted_mode->crtc_vdisplay = vmode->vde;
adjusted_mode->crtc_vblank_start = vmode->vde + vborder;
adjusted_mode->crtc_vblank_end = vmode->vt - vborder;
adjusted_mode->crtc_vsync_start = vmode->vde + vborder + vmode->vfp;
adjusted_mode->crtc_vsync_end = vmode->vde + vborder + vmode->vfp + vmode->vsync;
adjusted_mode->crtc_vtotal = vmode->vt;
}
return 0;
}