From: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Date: Mon, 12 Feb 2018 10:52:51 +0200
Subject: drm/simple_kms_helper: Add {enable|disable}_vblank callback support
Git-commit: ac86cba96e2a439883d452772013049f54df2042
Patch-mainline: v4.17-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
If simple_kms_helper based driver needs to work with vblanks,
then it has to provide drm_driver.{enable|disable}_vblank callbacks,
because drm_simple_kms_helper.drm_crtc_funcs does not provide any.
At the same time drm_driver.{enable|disable}_vblank callbacks
are marked as deprecated and shouldn't be used by new drivers.
Fix this by extending drm_simple_kms_helper.drm_crtc_funcs
to provide the missing callbacks.
Signed-off-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/1518425574-32671-2-git-send-email-andr2000@gmail.com
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/drm_simple_kms_helper.c | 24 ++++++++++++++++++++++++
include/drm/drm_simple_kms_helper.h | 18 ++++++++++++++++++
2 files changed, 42 insertions(+)
--- a/drivers/gpu/drm/drm_simple_kms_helper.c
+++ b/drivers/gpu/drm/drm_simple_kms_helper.c
@@ -92,6 +92,28 @@ static const struct drm_crtc_helper_func
.atomic_disable = drm_simple_kms_crtc_disable,
};
+static int drm_simple_kms_crtc_enable_vblank(struct drm_crtc *crtc)
+{
+ struct drm_simple_display_pipe *pipe;
+
+ pipe = container_of(crtc, struct drm_simple_display_pipe, crtc);
+ if (!pipe->funcs || !pipe->funcs->enable_vblank)
+ return 0;
+
+ return pipe->funcs->enable_vblank(pipe);
+}
+
+static void drm_simple_kms_crtc_disable_vblank(struct drm_crtc *crtc)
+{
+ struct drm_simple_display_pipe *pipe;
+
+ pipe = container_of(crtc, struct drm_simple_display_pipe, crtc);
+ if (!pipe->funcs || !pipe->funcs->disable_vblank)
+ return;
+
+ pipe->funcs->disable_vblank(pipe);
+}
+
static const struct drm_crtc_funcs drm_simple_kms_crtc_funcs = {
.reset = drm_atomic_helper_crtc_reset,
.destroy = drm_crtc_cleanup,
@@ -99,6 +121,8 @@ static const struct drm_crtc_funcs drm_s
.page_flip = drm_atomic_helper_page_flip,
.atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
+ .enable_vblank = drm_simple_kms_crtc_enable_vblank,
+ .disable_vblank = drm_simple_kms_crtc_disable_vblank,
};
static int drm_simple_kms_plane_atomic_check(struct drm_plane *plane,
--- a/include/drm/drm_simple_kms_helper.h
+++ b/include/drm/drm_simple_kms_helper.h
@@ -107,6 +107,24 @@ struct drm_simple_display_pipe_funcs {
*/
void (*cleanup_fb)(struct drm_simple_display_pipe *pipe,
struct drm_plane_state *plane_state);
+
+ /**
+ * @enable_vblank:
+ *
+ * Optional, called by &drm_crtc_funcs.enable_vblank. Please read
+ * the documentation for the &drm_crtc_funcs.enable_vblank hook for
+ * more details.
+ */
+ int (*enable_vblank)(struct drm_simple_display_pipe *pipe);
+
+ /**
+ * @disable_vblank:
+ *
+ * Optional, called by &drm_crtc_funcs.disable_vblank. Please read
+ * the documentation for the &drm_crtc_funcs.disable_vblank hook for
+ * more details.
+ */
+ void (*disable_vblank)(struct drm_simple_display_pipe *pipe);
};
/**