drm/armada: Use regular fbdev I/O helpers

Use the regular fbdev helpers for framebuffer I/O instead of DRM's
helpers. Armada does not use damage handling, so DRM's fbdev helpers
are mere wrappers around the fbdev code.

By using fbdev helpers directly within each DRM fbdev emulation,
we can eventually remove DRM's wrapper functions entirely.

v4:
	* use initializer macros for struct fb_ops
v2:
	* use FB_IO_HELPERS option

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Russell King <linux@armlinux.org.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20230530151228.22979-4-tzimmermann@suse.de

diff --git a/drivers/gpu/drm/armada/Kconfig b/drivers/gpu/drm/armada/Kconfig
index f5c66d8..5afade2 100644 (file)
--- a/drivers/gpu/drm/armada/Kconfig
+++ b/drivers/gpu/drm/armada/Kconfig
@@ -3,6 +3,7 @@ config DRM_ARMADA
        tristate "DRM support for Marvell Armada SoCs"
        depends on DRM && HAVE_CLK && ARM && MMU
        select DRM_KMS_HELPER
+       select FB_IO_HELPERS if DRM_FBDEV_EMULATION
        help
          Support the "LCD" controllers found on the Marvell Armada 510
          devices.  There are two controllers on the device, each controller

diff --git a/drivers/gpu/drm/armada/armada_fbdev.c b/drivers/gpu/drm/armada/armada_fbdev.c
index 0a5fd1a..3943e89 100644 (file)
--- a/drivers/gpu/drm/armada/armada_fbdev.c
+++ b/drivers/gpu/drm/armada/armada_fbdev.c
@@ -5,6 +5,7 @@
  */
 
 #include <linux/errno.h>
+#include <linux/fb.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 
@@ -33,12 +34,8 @@ static void armada_fbdev_fb_destroy(struct fb_info *info)
 
 static const struct fb_ops armada_fb_ops = {
        .owner          = THIS_MODULE,
+       FB_DEFAULT_IO_OPS,
        DRM_FB_HELPER_DEFAULT_OPS,
-       .fb_read        = drm_fb_helper_cfb_read,
-       .fb_write       = drm_fb_helper_cfb_write,
-       .fb_fillrect    = drm_fb_helper_cfb_fillrect,
-       .fb_copyarea    = drm_fb_helper_cfb_copyarea,
-       .fb_imageblit   = drm_fb_helper_cfb_imageblit,
        .fb_destroy     = armada_fbdev_fb_destroy,
 };