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drm: switch drm_fb_xrgb8888_to_rgb565_dstclip to accept __iomem dst

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Not all archs have the __io_virt() macro, so cirrus can't simply convert
pointers that way.  The drm format helpers have to use memcpy_toio()
instead.

This patch makes drm_fb_xrgb8888_to_rgb565_dstclip() accept a __iomem
dst pointer and use memcpy_toio() instead of memcpy().  The helper
function (drm_fb_xrgb8888_to_rgb565_line) has been changed to process
a single scanline.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Noralf Trønnes <noralf@tronnes.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20190410063815.17062-3-kraxel@redhat.com
This commit is contained in:
Gerd Hoffmann
2019-04-10 08:38:14 +02:00
parent bf4f6d16c8
commit d653bd3948
3 changed files with 64 additions and 61 deletions
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2
drivers/gpu/drm/cirrus/cirrus.c
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@@ -311,7 +311,7 @@ static int cirrus_fb_blit_rect(struct drm_framebuffer *fb,
vmap, fb, rect);
else if (fb->format->cpp[0] == 4 && cirrus->cpp == 2)
drm_fb_xrgb8888_to_rgb565_dstclip(__io_virt(cirrus->vram),
drm_fb_xrgb8888_to_rgb565_dstclip(cirrus->vram,
cirrus->pitch,
vmap, fb, rect, false);