Commit ef4ed862 authored by Thomas Zimmermann's avatar Thomas Zimmermann
Browse files

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: default avatarThomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: default avatarJocelyn Falempe <jfalempe@redhat.com&gt;>
Link: https://patch.msgid.link/20251126094626.41985-3-tzimmermann@suse.de
parent 1e759ed2

drivers/gpu/drm/ast/ast_cursor.c

+14 −1
Original line number Diff line number Diff line
@@ -191,7 +191,20 @@ static const u8 *ast_cursor_plane_get_argb4444(struct ast_cursor_plane *ast_curs 


	switch (fb->format->format) {

	case DRM_FORMAT_ARGB4444:

		if (shadow_plane_state->data[0].is_iomem) {

			struct iosys_map argb4444_dst[DRM_FORMAT_MAX_PLANES] = {

				IOSYS_MAP_INIT_VADDR(ast_cursor_plane->argb4444),

			};

			unsigned int argb4444_dst_pitch[DRM_FORMAT_MAX_PLANES] = {

				AST_HWC_PITCH,

			};



			drm_fb_memcpy(argb4444_dst, argb4444_dst_pitch,

				      shadow_plane_state->data, fb, clip);

			argb4444 = argb4444_dst[0].vaddr;

		} else {

			argb4444 = shadow_plane_state->data[0].vaddr;

		}

		break;

	case DRM_FORMAT_ARGB8888:

		{