Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
drm/ast: Support cursor buffers objects in I/O memory
Copy the ARGB4444 cursor buffer to system memory if it is located in
I/O memory. While this cannot happen with ast's native GEM objects, an
imported buffer object might be on the external device's I/O memory.
If the cursor buffer is located in system memory continue to use it
directly.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com>>
Link: https://patch.msgid.link/20251126094626.41985-3-tzimmermann@suse.de
+14
-1
+14
-1
drivers/gpu/drm/ast/ast_cursor.c
+14
-1
drivers/gpu/drm/ast/ast_cursor.c
···
191
191
192
192
switch (fb->format->format) {
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193
case DRM_FORMAT_ARGB4444:
194
-
argb4444 = shadow_plane_state->data[0].vaddr;
194
+
if (shadow_plane_state->data[0].is_iomem) {
195
+
struct iosys_map argb4444_dst[DRM_FORMAT_MAX_PLANES] = {
196
+
IOSYS_MAP_INIT_VADDR(ast_cursor_plane->argb4444),
197
+
};
198
+
unsigned int argb4444_dst_pitch[DRM_FORMAT_MAX_PLANES] = {
199
+
AST_HWC_PITCH,
200
+
};
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+
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+
drm_fb_memcpy(argb4444_dst, argb4444_dst_pitch,
203
+
shadow_plane_state->data, fb, clip);
204
+
argb4444 = argb4444_dst[0].vaddr;
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+
} else {
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+
argb4444 = shadow_plane_state->data[0].vaddr;
207
+
}
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208
break;
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209
case DRM_FORMAT_ARGB8888:
197
210
{