drm/msm: fb prepare/cleanup
Atomic wants to split the prepare/pin from where we actually program the
scanout address (so that any part that can fail is done synchronously).
Add some fb/gem apis to make this easier to use from the kms parts.
Signed-off-by: Rob Clark <robdclark@gmail.com>
diff --git a/drivers/gpu/drm/msm/msm_fb.c b/drivers/gpu/drm/msm/msm_fb.c
index 81bafdf..acf34ec 100644
--- a/drivers/gpu/drm/msm/msm_fb.c
+++ b/drivers/gpu/drm/msm/msm_fb.c
@@ -87,6 +87,42 @@
}
#endif
+/* prepare/pin all the fb's bo's for scanout. Note that it is not valid
+ * to prepare an fb more multiple different initiator 'id's. But that
+ * should be fine, since only the scanout (mdpN) side of things needs
+ * this, the gpu doesn't care about fb's.
+ */
+int msm_framebuffer_prepare(struct drm_framebuffer *fb, int id)
+{
+ struct msm_framebuffer *msm_fb = to_msm_framebuffer(fb);
+ int ret, i, n = drm_format_num_planes(fb->pixel_format);
+ uint32_t iova;
+
+ for (i = 0; i < n; i++) {
+ ret = msm_gem_get_iova(msm_fb->planes[i], id, &iova);
+ DBG("FB[%u]: iova[%d]: %08x (%d)", fb->base.id, i, iova, ret);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+void msm_framebuffer_cleanup(struct drm_framebuffer *fb, int id)
+{
+ struct msm_framebuffer *msm_fb = to_msm_framebuffer(fb);
+ int i, n = drm_format_num_planes(fb->pixel_format);
+
+ for (i = 0; i < n; i++)
+ msm_gem_put_iova(msm_fb->planes[i], id);
+}
+
+uint32_t msm_framebuffer_iova(struct drm_framebuffer *fb, int id, int plane)
+{
+ struct msm_framebuffer *msm_fb = to_msm_framebuffer(fb);
+ return msm_gem_iova(msm_fb->planes[plane], id);
+}
+
struct drm_gem_object *msm_framebuffer_bo(struct drm_framebuffer *fb, int plane)
{
struct msm_framebuffer *msm_fb = to_msm_framebuffer(fb);