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drm/i915: Fix 90/270 degree rotated RGB565 src coord checks

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Supposedly both src coordinates have to even when doing 90/270
degree rotation with RGB565. This is definitely true for the
X coordinate (we just get a black screen when it is odd). My
experiments didn't show any misbehaviour with an odd
Y coordinate, but let's trust the spec and reject that one
as well.

v2: Ignore ccs hsub/vsub
v3: Clarify the CCS special (Maarten)
    Deal with tgl+ CCS modifiers where we
    do need to look at hsub/vsub

Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> #v2
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200228160523.1064-1-ville.syrjala@linux.intel.com
This commit is contained in:
Ville Syrjälä 2020-02-28 18:05:23 +02:00
parent 0dd5b13315
commit dea2ecd12b
1 changed files with 21 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
drivers/gpu/drm/i915/display/intel_sprite.c
View File

@ -282,6 +282,16 @@ int intel_plane_check_src_coordinates(struct intel_plane_state *plane_state)
u32 src_x, src_y, src_w, src_h, hsub, vsub;
bool rotated = drm_rotation_90_or_270(plane_state->hw.rotation);
/*
* FIXME hsub/vsub vs. block size is a mess. Pre-tgl CCS
* abuses hsub/vsub so we can't use them here. But as they
* are limited to 32bpp RGB formats we don't actually need
* to check anything.
*/
if (fb->modifier == I915_FORMAT_MOD_Y_TILED_CCS ||
fb->modifier == I915_FORMAT_MOD_Yf_TILED_CCS)
return 0;
/*
* Hardware doesn't handle subpixel coordinates.
* Adjust to (macro)pixel boundary, but be careful not to
@ -296,26 +306,26 @@ int intel_plane_check_src_coordinates(struct intel_plane_state *plane_state)
drm_rect_init(src, src_x << 16, src_y << 16,
src_w << 16, src_h << 16);
if (!fb->format->is_yuv)
return 0;
/* YUV specific checks */
if (!rotated) {
if (fb->format->format == DRM_FORMAT_RGB565 && rotated) {
hsub = 2;
vsub = 2;
} else {
hsub = fb->format->hsub;
vsub = fb->format->vsub;
} else {
hsub = vsub = max(fb->format->hsub, fb->format->vsub);
}
if (rotated)
hsub = vsub = max(hsub, vsub);
if (src_x % hsub || src_w % hsub) {
DRM_DEBUG_KMS("src x/w (%u, %u) must be a multiple of %u for %sYUV planes\n",
src_x, src_w, hsub, rotated ? "rotated " : "");
DRM_DEBUG_KMS("src x/w (%u, %u) must be a multiple of %u (rotated: %s)\n",
src_x, src_w, hsub, yesno(rotated));
return -EINVAL;
}
if (src_y % vsub || src_h % vsub) {
DRM_DEBUG_KMS("src y/h (%u, %u) must be a multiple of %u for %sYUV planes\n",
src_y, src_h, vsub, rotated ? "rotated " : "");
DRM_DEBUG_KMS("src y/h (%u, %u) must be a multiple of %u (rotated: %s)\n",
src_y, src_h, vsub, yesno(rotated));
return -EINVAL;
}