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.
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: Archit Taneja <architt@xxxxxxxxxxxxxx>
---
drivers/gpu/drm/drm_fb_helper.c | 13 +++++++++++++
include/drm/drm_fb_helper.h | 2 ++
2 files changed, 15 insertions(+)
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index 1312b6b..9620aa5 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -881,6 +881,19 @@ 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
+ *
+ * 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)
{
diff --git a/include/drm/drm_fb_helper.h b/include/drm/drm_fb_helper.h
index 180290e..ef32500 100644
--- a/include/drm/drm_fb_helper.h
+++ b/include/drm/drm_fb_helper.h
@@ -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);
--
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