Am Dienstag, den 24.05.2016, 18:10 +0800 schrieb Liu Ying:
> Use the drm_plane_helper_update/disable() and drm_helper_crtc_mode_set()
> transistional atomic helpers. The crtc->mode_set_nofb callback is added
> so that the primary plane is no longer tied to the CRTC. Check/update
> logics are separated to make sure crtc->mode_set_nofb and plane->atomic_update
> are always successful. Also, some necessary logics are tweaked for a smooth
> transition.
>
> Signed-off-by: Liu Ying <gnuiyl@xxxxxxxxx>
> ---
> drivers/gpu/drm/imx/ipuv3-crtc.c | 173 +++++++------
> drivers/gpu/drm/imx/ipuv3-plane.c | 516 +++++++++++++++++++++++---------------
> drivers/gpu/drm/imx/ipuv3-plane.h | 14 +-
> drivers/gpu/ipu-v3/ipu-dc.c | 5 +-
> drivers/gpu/ipu-v3/ipu-di.c | 3 -
> 5 files changed, 400 insertions(+), 311 deletions(-)
>
[...]
> diff --git a/drivers/gpu/drm/imx/ipuv3-plane.c b/drivers/gpu/drm/imx/ipuv3-plane.c
> index 30cedbb..4511b84 100644
> --- a/drivers/gpu/drm/imx/ipuv3-plane.c
> +++ b/drivers/gpu/drm/imx/ipuv3-plane.c
> @@ -16,6 +16,7 @@
> #include <drm/drmP.h>
> #include <drm/drm_fb_cma_helper.h>
> #include <drm/drm_gem_cma_helper.h>
> +#include <drm/drm_plane_helper.h>
>
> #include "video/imx-ipu-v3.h"
> #include "ipuv3-plane.h"
> @@ -51,12 +52,15 @@ int ipu_plane_irq(struct ipu_plane *ipu_plane)
> IPU_IRQ_EOF);
> }
>
> -int ipu_plane_set_base(struct ipu_plane *ipu_plane, struct drm_framebuffer *fb,
> - int x, int y)
> +int ipu_plane_set_base(struct ipu_plane *ipu_plane, struct drm_framebuffer *fb)
> {
> - struct drm_gem_cma_object *cma_obj[3];
> - unsigned long eba, ubo, vbo;
> + struct drm_gem_cma_object *cma_obj[3], *old_cma_obj[3];
> + struct drm_plane_state *state = ipu_plane->base.state;
> + struct drm_framebuffer *old_fb = state->fb;
> + unsigned long eba, ubo, vbo, old_eba, old_ubo, old_vbo;
It looks to me like eba, ubo, vbo are good candidates to be put into a
custom ipu_plane_state structure during check.
regards
Philipp
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