From c1221c468024417d75829a6c2ce8d4e57631ebc6 Mon Sep 17 00:00:00 2001
From: Boram Park <boram1288.park@samsung.com>
Date: Mon, 23 Nov 2015 16:18:00 +0900
Subject: [PATCH] ecore_drm: support wait_vblank function and user drm vblank
 callback

Change-Id: I1b5337ee64cb20f44169a50ff7fcd5fd0824b6fb
---
 src/lib/ecore_drm/Ecore_Drm.h         |  3 ++
 src/lib/ecore_drm/ecore_drm_device.c  | 16 +++------
 src/lib/ecore_drm/ecore_drm_output.c  | 66 ++++++++++++++++++++++++++++++++++-
 src/lib/ecore_drm/ecore_drm_private.h |  7 ++++
 4 files changed, 79 insertions(+), 13 deletions(-)

diff --git a/src/lib/ecore_drm/Ecore_Drm.h b/src/lib/ecore_drm/Ecore_Drm.h
index 0e4f28d..694992e 100644
--- a/src/lib/ecore_drm/Ecore_Drm.h
+++ b/src/lib/ecore_drm/Ecore_Drm.h
@@ -971,6 +971,9 @@ EAPI Eina_List *ecore_drm_seat_evdev_list_get(Ecore_Drm_Seat *seat);
 EAPI const char *ecore_drm_evdev_name_get(Ecore_Drm_Evdev *evdev);
 EAPI const char *ecore_drm_evdev_sysname_get(Ecore_Drm_Evdev *evdev);
 
+typedef void (*Ecore_Drm_VBlank_Cb)(void *data);
+EAPI Eina_Bool  ecore_drm_output_wait_vblank(Ecore_Drm_Output *output, int interval, Ecore_Drm_VBlank_Cb func, void *data);
+
 /* This is ugly, will remove after rebaseing on 1.14 */
 EAPI unsigned int ecore_drm_output_crtc_id_get(Ecore_Drm_Output *output);
 EAPI void ecore_drm_output_current_fb_info_set(Ecore_Drm_Output *output, unsigned int handle, int w, int h, unsigned int format);
diff --git a/src/lib/ecore_drm/ecore_drm_device.c b/src/lib/ecore_drm/ecore_drm_device.c
index cb6bfe4..00fad55 100644
--- a/src/lib/ecore_drm/ecore_drm_device.c
+++ b/src/lib/ecore_drm/ecore_drm_device.c
@@ -58,21 +58,13 @@ _ecore_drm_device_cb_page_flip(int fd EINA_UNUSED, unsigned int frame EINA_UNUSE
 static void 
 _ecore_drm_device_cb_vblank(int fd EINA_UNUSED, unsigned int frame EINA_UNUSED, unsigned int sec EINA_UNUSED, unsigned int usec EINA_UNUSED, void *data)
 {
-   Ecore_Drm_Sprite *sprite;
-   Ecore_Drm_Output *output;
+   Ecore_Drm_VBlank_Callback *cb;
 
    /* DBG("Drm VBlank Event"); */
 
-   if (!(sprite = data)) return;
-
-   output = sprite->output;
-   output->pending_vblank = EINA_FALSE;
-
-   ecore_drm_output_fb_release(output, sprite->current_fb);
-   sprite->current_fb = sprite->next_fb;
-   sprite->next_fb = NULL;
-
-   if (!output->pending_flip) _ecore_drm_output_frame_finish(output);
+   if (!(cb = data)) return;
+   if (cb->func) cb->func(cb->data);
+   free(cb);
 }
 
 #if 0
diff --git a/src/lib/ecore_drm/ecore_drm_output.c b/src/lib/ecore_drm/ecore_drm_output.c
index bac12b8..dce7d26 100644
--- a/src/lib/ecore_drm/ecore_drm_output.c
+++ b/src/lib/ecore_drm/ecore_drm_output.c
@@ -622,6 +622,26 @@ _ecore_drm_output_free(Ecore_Drm_Output *output)
    free(output);
 }
 
+static void
+_ecore_drm_output_cb_vblank(void *data)
+{
+   Ecore_Drm_Sprite *sprite;
+   Ecore_Drm_Output *output;
+
+   /* DBG("Drm VBlank Event"); */
+
+   if (!(sprite = data)) return;
+
+   output = sprite->output;
+   output->pending_vblank = EINA_FALSE;
+
+   ecore_drm_output_fb_release(output, sprite->current_fb);
+   sprite->current_fb = sprite->next_fb;
+   sprite->next_fb = NULL;
+
+   if (!output->pending_flip) _ecore_drm_output_frame_finish(output);
+}
+
 void 
 _ecore_drm_output_frame_finish(Ecore_Drm_Output *output)
 {
@@ -1075,6 +1095,7 @@ ecore_drm_output_repaint(Ecore_Drm_Output *output)
              .request.type = (DRM_VBLANK_RELATIVE | DRM_VBLANK_EVENT),
              .request.sequence = 1,
           };
+        Ecore_Drm_VBlank_Callback *cb;
 
         if (((!sprite->current_fb) && (!sprite->next_fb)) || 
             (!ecore_drm_sprites_crtc_supported(output, sprite->crtcs)))
@@ -1085,7 +1106,14 @@ ecore_drm_output_repaint(Ecore_Drm_Output *output)
 
         ecore_drm_sprites_fb_set(sprite, id, flags);
 
-        vbl.request.signal = (unsigned long)sprite;
+        if ((cb = calloc(1, sizeof(Ecore_Drm_VBlank_Callback))))
+          {
+             cb->output = output;
+             cb->func = _ecore_drm_output_cb_vblank;
+             cb->data = sprite;
+          }
+
+        vbl.request.signal = (unsigned long)cb;
         ret = drmWaitVBlank(dev->drm.fd, &vbl);
         if (ret) ERR("Error Wait VBlank: %m");
 
@@ -1513,3 +1541,39 @@ ecore_drm_output_current_fb_info_get(Ecore_Drm_Output *output, unsigned int *han
    if (format)
      *format = output->curr_fb_format;
 }
+
+EAPI Eina_Bool
+ecore_drm_output_wait_vblank(Ecore_Drm_Output *output, int interval, Ecore_Drm_VBlank_Cb func, void *data)
+{
+   Ecore_Drm_Device *dev;
+   Ecore_Drm_VBlank_Callback *cb;
+   drmVBlank vbl;
+   int ret;
+
+   EINA_SAFETY_ON_NULL_RETURN_VAL(output, EINA_FALSE);
+   EINA_SAFETY_ON_NULL_RETURN_VAL(func, EINA_FALSE);
+
+   dev = output->dev;
+
+   if (!(cb = calloc(1, sizeof(Ecore_Drm_VBlank_Callback))))
+     return EINA_FALSE;
+
+   cb->output = output;
+   cb->func = func;
+   cb->data = data;
+
+   vbl.request.type = (DRM_VBLANK_RELATIVE | DRM_VBLANK_EVENT);
+   if (output->pipe > 0)
+     vbl.request.type |= DRM_VBLANK_SECONDARY;
+   vbl.request.sequence = interval;
+   vbl.request.signal = (unsigned long)cb;
+
+   ret = drmWaitVBlank(dev->drm.fd, &vbl);
+   if (ret)
+     {
+        ERR("Error Wait VBlank: %m");
+        return EINA_FALSE;
+     }
+
+   return EINA_TRUE;
+}
diff --git a/src/lib/ecore_drm/ecore_drm_private.h b/src/lib/ecore_drm/ecore_drm_private.h
index a856aeb..2513777 100644
--- a/src/lib/ecore_drm/ecore_drm_private.h
+++ b/src/lib/ecore_drm/ecore_drm_private.h
@@ -88,6 +88,13 @@ typedef struct _Ecore_Drm_Pageflip_Callback
    int count;
 } Ecore_Drm_Pageflip_Callback;
 
+typedef struct _Ecore_Drm_VBlank_Callback
+{
+   Ecore_Drm_Output *output;
+   Ecore_Drm_VBlank_Cb func;
+   void *data;
+} Ecore_Drm_VBlank_Callback;
+
 typedef enum _Ecore_Drm_Backlight_Type
 {
    ECORE_DRM_BACKLIGHT_RAW,
-- 
2.7.4