Subclass plane state struct to enable storing driver's private state. This patch only adds the base drm_plane_state struct and the atomic functions that handle it.
Signed-off-by: Haneen Mohammed hamohammed.sa@gmail.com Reviewed-by: Sean Paul seanpaul@chromium.org --- drivers/gpu/drm/vkms/vkms_drv.h | 11 ++++++++ drivers/gpu/drm/vkms/vkms_plane.c | 47 +++++++++++++++++++++++++++++-- 2 files changed, 55 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/vkms/vkms_drv.h b/drivers/gpu/drm/vkms/vkms_drv.h index 75e52d61e65d..a1b206643c10 100644 --- a/drivers/gpu/drm/vkms/vkms_drv.h +++ b/drivers/gpu/drm/vkms/vkms_drv.h @@ -20,6 +20,14 @@ static const u32 vkms_formats[] = { DRM_FORMAT_XRGB8888, };
+/** + * vkms_plane_state - Driver specific plane state + * @base: base plane state + */ +struct vkms_plane_state { + struct drm_plane_state base; +}; + /** * vkms_crtc_state - Driver specific CRTC state * @base: base CRTC state @@ -63,6 +71,9 @@ struct vkms_gem_object { #define to_vkms_crtc_state(target)\ container_of(target, struct vkms_crtc_state, base)
+#define to_vkms_plane_state(target)\ + container_of(target, struct vkms_plane_state, base) + /* CRTC */ int vkms_crtc_init(struct drm_device *dev, struct drm_crtc *crtc, struct drm_plane *primary, struct drm_plane *cursor); diff --git a/drivers/gpu/drm/vkms/vkms_plane.c b/drivers/gpu/drm/vkms/vkms_plane.c index 8191940844e5..70fca22bc51b 100644 --- a/drivers/gpu/drm/vkms/vkms_plane.c +++ b/drivers/gpu/drm/vkms/vkms_plane.c @@ -12,13 +12,54 @@ #include <drm/drm_atomic_helper.h> #include <drm/drm_gem_framebuffer_helper.h>
+static struct drm_plane_state * +vkms_plane_duplicate_state(struct drm_plane *plane) +{ + struct vkms_plane_state *vkms_state; + + vkms_state = kzalloc(sizeof(*vkms_state), GFP_KERNEL); + if (!vkms_state) + return NULL; + + __drm_atomic_helper_plane_duplicate_state(plane, + &vkms_state->base); + + return &vkms_state->base; +} + +static void vkms_plane_destroy_state(struct drm_plane *plane, + struct drm_plane_state *old_state) +{ + struct vkms_plane_state *vkms_state = to_vkms_plane_state(old_state); + + __drm_atomic_helper_plane_destroy_state(old_state); + kfree(vkms_state); +} + +static void vkms_plane_reset(struct drm_plane *plane) +{ + struct vkms_plane_state *vkms_state; + + if (plane->state) + vkms_plane_destroy_state(plane, plane->state); + + vkms_state = kzalloc(sizeof(*vkms_state), GFP_KERNEL); + if (!vkms_state) { + DRM_ERROR("Cannot allocate vkms_plane_state\n"); + return; + } + + plane->state = &vkms_state->base; + plane->state->plane = plane; +} + static const struct drm_plane_funcs vkms_plane_funcs = { .update_plane = drm_atomic_helper_update_plane, .disable_plane = drm_atomic_helper_disable_plane, .destroy = drm_plane_cleanup, - .reset = drm_atomic_helper_plane_reset, - .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state, - .atomic_destroy_state = drm_atomic_helper_plane_destroy_state, + .reset = vkms_plane_reset, + .atomic_duplicate_state = vkms_plane_duplicate_state, + .atomic_destroy_state = vkms_plane_destroy_state, };
static void vkms_primary_plane_update(struct drm_plane *plane,