ecore-drm2: Add drm2 event for session activation

This patch adds a new Ecore_Drm2_Event_Activate that can be raised to
inform Enlightenment that a session has been activated or suspended so
that rendering can be paused/resumed

Signed-off-by: Chris Michael <cpmichael@osg.samsung.com>

src/lib/ecore_drm2/Ecore_Drm2.h

@@ -52,7 +52,14 @@ typedef struct _Ecore_Drm2_Event_Output_Changed
    Eina_Bool enabled : 1;
 } Ecore_Drm2_Event_Output_Changed;
 
+/* structure to represent event for session state changes */
+typedef struct _Ecore_Drm2_Event_Activate
+{
+   Eina_Bool active : 1;
+} Ecore_Drm2_Event_Activate;
+
 EAPI extern int ECORE_DRM2_EVENT_OUTPUT_CHANGED;
+EAPI extern int ECORE_DRM2_EVENT_ACTIVATE;
 
 /**
  * @file

src/lib/ecore_drm2/ecore_drm2.c

@@ -5,6 +5,7 @@ static int _ecore_drm2_init_count = 0;
 int _ecore_drm2_log_dom = -1;
 
 EAPI int ECORE_DRM2_EVENT_OUTPUT_CHANGED = -1;
+EAPI int ECORE_DRM2_EVENT_ACTIVATE = -1;
 
 EAPI int
 ecore_drm2_init(void)
@@ -40,6 +41,7 @@ ecore_drm2_init(void)
      }
 
    ECORE_DRM2_EVENT_OUTPUT_CHANGED = ecore_event_type_new();
+   ECORE_DRM2_EVENT_ACTIVATE = ecore_event_type_new();
 
    return _ecore_drm2_init_count;
 
@@ -67,6 +69,7 @@ ecore_drm2_shutdown(void)
    if (--_ecore_drm2_init_count != 0) return _ecore_drm2_init_count;
 
    ECORE_DRM2_EVENT_OUTPUT_CHANGED = -1;
+   ECORE_DRM2_EVENT_ACTIVATE = -1;
 
    eina_log_domain_unregister(_ecore_drm2_log_dom);
    _ecore_drm2_log_dom = -1;

src/lib/ecore_drm2/ecore_drm2_device.c

@@ -8,6 +8,24 @@
 # define DRM_CAP_CURSOR_HEIGHT 0x9
 #endif
 
+static Eina_Bool
+_cb_session_active(void *data EINA_UNUSED, int type EINA_UNUSED, void *event)
+{
+   Elput_Event_Session_Active *ev;
+   Ecore_Drm2_Event_Activate *ea;
+
+   ev = event;
+
+   ea = calloc(1, sizeof(Ecore_Drm2_Event_Activate));
+   if (!ea) return ECORE_CALLBACK_RENEW;
+
+   ea->active = ev->active;
+
+   ecore_event_add(ECORE_DRM2_EVENT_ACTIVATE, ea, NULL, NULL);
+
+   return ECORE_CALLBACK_RENEW;
+}
+
 static const char *
 _drm2_device_find(const char *seat)
 {
@@ -119,6 +137,10 @@ ecore_drm2_device_open(Ecore_Drm2_Device *device)
    DBG("Device Path: %s", device->path);
    DBG("Device Fd: %d", device->fd);
 
+   device->active_hdlr =
+     ecore_event_handler_add(ELPUT_EVENT_SESSION_ACTIVE,
+                             _cb_session_active, device);
+
    /* NB: Not going to enable planes if we don't support atomic */
    /* if (drmSetClientCap(device->fd, DRM_CLIENT_CAP_UNIVERSAL_PLANES, 1) < 0) */
    /*   ERR("Could not set Universal Plane support: %m"); */
@@ -140,6 +162,9 @@ ecore_drm2_device_free(Ecore_Drm2_Device *device)
 {
    EINA_SAFETY_ON_NULL_RETURN(device);
 
+   if (device->active_hdlr) ecore_event_handler_del(device->active_hdlr);
+   device->active_hdlr = NULL;
+
    eina_stringshare_del(device->path);
    free(device);
 }

src/lib/ecore_drm2/ecore_drm2_private.h

@@ -177,6 +177,7 @@ struct _Ecore_Drm2_Device
      } min, max;
 
    Eeze_Udev_Watch *watch;
+   Ecore_Event_Handler *active_hdlr;
 
    Eina_List *outputs;
 };