diff options
| author | Thierry Reding <treding@nvidia.com> | 2014-06-27 15:19:24 (GMT) |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2014-07-08 01:31:28 (GMT) |
| commit | 10a231026574f9ec9761b6435394b8830b485e4e (patch) | |
| tree | ae55c7173758db2778f02bb98954e7efceee5ec0 /drivers/gpu/drm/gma500 | |
| parent | 3a4938799dec32783759b0c66ee3bb8c82dd9937 (diff) | |
| download | linux-10a231026574f9ec9761b6435394b8830b485e4e.tar.xz | |
drm: Introduce drm_fb_helper_prepare()
To implement hotplug detection in a race-free manner, drivers must call
drm_kms_helper_poll_init() before hotplug events can be triggered. Such
events can be triggered right after any of the encoders or connectors
are initialized. At the same time, if the drm_fb_helper_hotplug_event()
helper is used by a driver, then the poll helper requires some parts of
the FB helper to be initialized to prevent a crash.
At the same time, drm_fb_helper_init() requires information that is not
necessarily available at such an early stage (number of CRTCs and
connectors), so it cannot be used yet.
Add a new helper, drm_fb_helper_prepare(), that initializes the bare
minimum needed to allow drm_kms_helper_poll_init() to execute and any
subsequent hotplug events to be processed properly.
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/gma500')
| -rw-r--r-- | drivers/gpu/drm/gma500/framebuffer.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/gma500/framebuffer.c b/drivers/gpu/drm/gma500/framebuffer.c index 76e4d77..d0dd3be 100644 --- a/drivers/gpu/drm/gma500/framebuffer.c +++ b/drivers/gpu/drm/gma500/framebuffer.c @@ -600,7 +600,8 @@ int psb_fbdev_init(struct drm_device *dev) } dev_priv->fbdev = fbdev; - fbdev->psb_fb_helper.funcs = &psb_fb_helper_funcs; + + drm_fb_helper_prepare(dev, &fbdev->psb_fb_helper, &psb_fb_helper_funcs); drm_fb_helper_init(dev, &fbdev->psb_fb_helper, dev_priv->ops->crtcs, INTELFB_CONN_LIMIT); |