drm: switch drm_fb_xrgb8888_to_rgb565_dstclip to accept __iomem dst
authorGerd Hoffmann <kraxel@redhat.com>
Wed, 10 Apr 2019 06:38:14 +0000 (08:38 +0200)
committerGerd Hoffmann <kraxel@redhat.com>
Wed, 10 Apr 2019 19:11:11 +0000 (21:11 +0200)
commitd653bd394823772f0696c0642be94d78d5562e41
treeb123521ceb1b9e3bdbeecb3c0038f327918e44b2
parentbf4f6d16c89466bbbe2f9c959a5ae366856f3111
drm: switch drm_fb_xrgb8888_to_rgb565_dstclip to accept __iomem dst

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
drivers/gpu/drm/cirrus/cirrus.c
drivers/gpu/drm/drm_format_helper.c
include/drm/drm_format_helper.h