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Commit fdefa58a authored by Archit Taneja's avatar Archit Taneja Committed by Daniel Vetter
Browse files

drm/fb_helper: Create a wrapper for fb_set_suspend 



Some drm drivers call fb_set_suspend. Create a drm_fb_helper function
that wraps around these calls.

This is part of an effort to prevent drm drivers from calling fbdev
functions directly, in order to make fbdev emulation a top level drm
option.

v3:
- Fixed kerneldoc errors

v2:
- Added kerneldocs
- Added a check for non-NULL fb_helper before proceeding. This will
  make the helpers work when we have a module param for fbdev emulation
- Follow the drm way of aligning of arguments in func definitions

Signed-off-by: default avatarArchit Taneja <architt@codeaurora.org>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 742547b7

drivers/gpu/drm/drm_fb_helper.c

+14 −0
Original line number Diff line number Diff line
@@ -877,6 +877,20 @@ void drm_fb_helper_cfb_imageblit(struct fb_info *info, 
}

EXPORT_SYMBOL(drm_fb_helper_cfb_imageblit);



/**

 * drm_fb_helper_set_suspend - wrapper around fb_set_suspend

 * @fb_helper: driver-allocated fbdev helper

 * @state: desired state, zero to resume, non-zero to suspend

 *

 * A wrapper around fb_set_suspend implemented by fbdev core

 */

void drm_fb_helper_set_suspend(struct drm_fb_helper *fb_helper, int state)

{

	if (fb_helper && fb_helper->fbdev)

		fb_set_suspend(fb_helper->fbdev, state);

}

EXPORT_SYMBOL(drm_fb_helper_set_suspend);



static int setcolreg(struct drm_crtc *crtc, u16 red, u16 green,

		     u16 blue, u16 regno, struct fb_info *info)

{

include/drm/drm_fb_helper.h

+2 −0
Original line number Diff line number Diff line
@@ -166,6 +166,8 @@ void drm_fb_helper_cfb_copyarea(struct fb_info *info, 
void drm_fb_helper_cfb_imageblit(struct fb_info *info,

				 const struct fb_image *image);



void drm_fb_helper_set_suspend(struct drm_fb_helper *fb_helper, int state);



int drm_fb_helper_setcmap(struct fb_cmap *cmap, struct fb_info *info);



int drm_fb_helper_hotplug_event(struct drm_fb_helper *fb_helper);