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drm/i915: Populate fb->format accurately in BIOS FB readout

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Use drm_get_format_info() instead of drm_format_info() to populate
fb->format during the BIOS FB readout. The difference being that
drm_get_format_info() knows about compressed formats whereas
drm_format_info() doesn't.

This doesn't actually matter in practice since the BIOS FB should
never be compressed, but no reason we shouldn't use the more accurate
function here anyway.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patch.msgid.link/20251107181126.5743-4-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Ville Syrjälä 2025-11-07 20:11:20 +02:00
parent 95357b68b6
commit 73206a7519
2 changed files with 4 additions and 2 deletions
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3
drivers/gpu/drm/i915/display/i9xx_plane.c
View File

@ -1203,7 +1203,8 @@ i9xx_get_initial_plane_config(struct intel_crtc *crtc,
pixel_format = val & DISP_FORMAT_MASK;
fourcc = i9xx_format_to_fourcc(pixel_format);
fb->format = drm_format_info(fourcc);
fb->format = drm_get_format_info(display->drm, fourcc, fb->modifier);
if (display->platform.haswell || display->platform.broadwell) {
offset = intel_de_read(display,

3
drivers/gpu/drm/i915/display/skl_universal_plane.c
View File

@ -3083,7 +3083,6 @@ skl_get_initial_plane_config(struct intel_crtc *crtc,
fourcc = skl_format_to_fourcc(pixel_format,
val & PLANE_CTL_ORDER_RGBX, alpha);
fb->format = drm_format_info(fourcc);
tiling = val & PLANE_CTL_TILED_MASK;
switch (tiling) {
@ -3136,6 +3135,8 @@ skl_get_initial_plane_config(struct intel_crtc *crtc,
goto error;
}
fb->format = drm_get_format_info(display->drm, fourcc, fb->modifier);
if (!display->params.enable_dpt &&
intel_fb_modifier_uses_dpt(display, fb->modifier)) {
drm_dbg_kms(display->drm, "DPT disabled, skipping initial FB\n");