ecore-drm2: Add API functions to work with outputs

This patch adds support for creating, destroying, and otherwise
working with outputs via exposed API functions.

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

5 files changed, 1147 insertions, 0 deletions

diff --git a/src/Makefile_Ecore_Drm2.am b/src/Makefile_Ecore_Drm2.am
index 59e9865aa3..ab401c625f 100644
--- a/src/Makefile_Ecore_Drm2.am
+++ b/src/Makefile_Ecore_Drm2.am
@@ -9,6 +9,7 @@ dist_installed_ecoredrm2mainheaders_DATA = \
   lib/ecore_drm2/Ecore_Drm2.h
 
 lib_ecore_drm2_libecore_drm2_la_SOURCES = \
+lib/ecore_drm2/ecore_drm2_outputs.c \
 lib/ecore_drm2/ecore_drm2_device.c \
 lib/ecore_drm2/ecore_drm2.c \
 lib/ecore_drm2/ecore_drm2_private.h
diff --git a/src/lib/ecore_drm2/Ecore_Drm2.h b/src/lib/ecore_drm2/Ecore_Drm2.h
index bf08be22c5..0bed771489 100644
--- a/src/lib/ecore_drm2/Ecore_Drm2.h
+++ b/src/lib/ecore_drm2/Ecore_Drm2.h
@@ -31,6 +31,30 @@
 /* opaque structure to represent a drm device */
 typedef struct _Ecore_Drm2_Device Ecore_Drm2_Device;
 
+/* opaque structure to represent a framebuffer object */
+typedef struct _Ecore_Drm2_Fb Ecore_Drm2_Fb;
+
+/* opaque structure to represent an output device */
+typedef struct _Ecore_Drm2_Output Ecore_Drm2_Output;
+
+/* opaque structure to represent an output mode */
+typedef struct _Ecore_Drm2_Output_Mode Ecore_Drm2_Output_Mode;
+
+/* structure to represent event for output changes */
+typedef struct _Ecore_Drm2_Event_Output_Changed
+{
+   unsigned int id;
+   int x, y, w, h;
+   int phys_width, phys_height;
+   unsigned int refresh, scale;
+   int subpixel, transform;
+   const char *make, *model, *name;
+   Eina_Bool connected : 1;
+   Eina_Bool enabled : 1;
+} Ecore_Drm2_Event_Output_Changed;
+
+EAPI extern int ECORE_DRM2_EVENT_OUTPUT_CHANGED;
+
 /**
  * @file
  * @brief Ecore functions for dealing with drm, virtual terminals
@@ -42,6 +66,7 @@ typedef struct _Ecore_Drm2_Device Ecore_Drm2_Device;
  *
  * @li @ref Ecore_Drm2_Init_Group
  * @li @ref Ecore_Drm2_Device_Group
+ * @li @ref Ecore_Drm2_Output_Group
  */
 
 /**
@@ -149,6 +174,134 @@ EAPI int ecore_drm2_device_clock_id_get(Ecore_Drm2_Device *device);
  */
 EAPI void ecore_drm2_device_cursor_size_get(Ecore_Drm2_Device *device, int *width, int *height);
 
+/**
+ * @defgroup Ecore_Drm2_Output_Group Drm output functions
+ *
+ * Functions that deal with setup of outputs
+ */
+
+/**
+ * Iterate drm resources and create outputs
+ *
+ * @param device
+ *
+ * @return EINA_TRUE on success, EINA_FALSE otherwise
+ *
+ * @ingroup Ecore_Drm2_Output_Group
+ * @since 1.18
+ */
+EAPI Eina_Bool ecore_drm2_outputs_create(Ecore_Drm2_Device *device);
+
+/**
+ * Destroy any created outputs
+ *
+ * @param device
+ *
+ * @ingroup Ecore_Drm2_Output_Group
+ * @since 1.18
+ */
+EAPI void ecore_drm2_outputs_destroy(Ecore_Drm2_Device *device);
+
+/**
+ * Get the list of outputs from a drm device
+ *
+ * @param device
+ *
+ * @return
+ *
+ * @ingroup Ecore_Drm2_Output_Group
+ * @since 1.18
+ */
+EAPI const Eina_List *ecore_drm2_outputs_get(Ecore_Drm2_Device *device);
+
+/**
+ * Get the dpms level of a given output
+ *
+ * @param output
+ *
+ * @return Integer value representing the state of DPMS on a given output
+ *         or -1 on error
+ *
+ * @ingroup Ecore_Drm2_Output_Group
+ * @since 1.18
+ */
+EAPI int ecore_drm2_output_dpms_get(Ecore_Drm2_Output *output);
+
+/**
+ * Set the dpms level of a given output
+ *
+ * @param output
+ * @param level
+ *
+ * @ingroup Ecore_Drm2_Output_Group
+ * @since 1.18
+ */
+EAPI void ecore_drm2_output_dpms_set(Ecore_Drm2_Output *output, int level);
+
+/**
+ * Get the edid of a given output
+ *
+ * @param output
+ *
+ * @return A string representing the edid
+ *
+ * @ingroup Ecore_Drm2_Output_Group
+ * @since 1.18
+ */
+EAPI char *ecore_drm2_output_edid_get(Ecore_Drm2_Output *output);
+
+/**
+ * Get if a given output has a backlight
+ *
+ * @param output
+ *
+ * @return EINA_TRUE if this output has a backlight, EINA_FALSE otherwise
+ *
+ * @ingroup Ecore_Drm2_Output_Group
+ * @since 1.18
+ */
+EAPI Eina_Bool ecore_drm2_output_backlight_get(Ecore_Drm2_Output *output);
+
+/**
+ * Find an output at the given position
+ *
+ * @param device
+ * @param x
+ * @param y
+ *
+ * @return An Ecore_Drm2_Output which exists at the given coordinates, or NULL on failure
+ *
+ * @ingroup Ecore_Drm2_Output_Group
+ * @since 1.18
+ */
+EAPI Ecore_Drm2_Output *ecore_drm2_output_find(Ecore_Drm2_Device *device, int x, int y);
+
+/**
+ * Get the geometry of a given output
+ *
+ * @param output
+ * @param x
+ * @param y
+ * @param w
+ * @param h
+ *
+ * @ingroup Ecore_Drm2_Output_Group
+ * @since 1.18
+ */
+EAPI void ecore_drm2_output_geometry_get(Ecore_Drm2_Output *output, int *x, int *y, int *w, int *h);
+
+/**
+ * Get the id of the crtc that an output is using
+ *
+ * @param output
+ *
+ * @return A valid crtc id or 0 on failure
+ *
+ * @ingroup Ecore_Drm2_Output_Group
+ * @since 1.18
+ */
+EAPI unsigned int ecore_drm2_output_crtc_get(Ecore_Drm2_Output *output);
+
 # endif
 
 #endif
diff --git a/src/lib/ecore_drm2/ecore_drm2.c b/src/lib/ecore_drm2/ecore_drm2.c
index 32b6781cc7..a4096f2fa5 100644
--- a/src/lib/ecore_drm2/ecore_drm2.c
+++ b/src/lib/ecore_drm2/ecore_drm2.c
@@ -4,6 +4,8 @@ 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_init(void)
 {
@@ -37,6 +39,8 @@ ecore_drm2_init(void)
         goto log_err;
      }
 
+   ECORE_DRM2_EVENT_OUTPUT_CHANGED = ecore_event_type_new();
+
    return _ecore_drm2_init_count;
 
 log_err:
@@ -62,6 +66,8 @@ ecore_drm2_shutdown(void)
 
    if (--_ecore_drm2_init_count != 0) return _ecore_drm2_init_count;
 
+   ECORE_DRM2_EVENT_OUTPUT_CHANGED = -1;
+
    eina_log_domain_unregister(_ecore_drm2_log_dom);
    _ecore_drm2_log_dom = -1;
 
diff --git a/src/lib/ecore_drm2/ecore_drm2_outputs.c b/src/lib/ecore_drm2/ecore_drm2_outputs.c
new file mode 100644
index 0000000000..d7f1c39f03
--- /dev/null
+++ b/src/lib/ecore_drm2/ecore_drm2_outputs.c
@@ -0,0 +1,886 @@
+#include "ecore_drm2_private.h"
+
+#define INSIDE(x, y, xx, yy, ww, hh) \
+   (((x) < ((xx) + (ww))) && ((y) < ((yy) + (hh))) && \
+       ((x) >= (xx)) && ((y) >= (yy)))
+
+#define EDID_DESCRIPTOR_ALPHANUMERIC_DATA_STRING 0xfe
+#define EDID_DESCRIPTOR_DISPLAY_PRODUCT_NAME 0xfc
+#define EDID_DESCRIPTOR_DISPLAY_PRODUCT_SERIAL_NUMBER 0xff
+#define EDID_OFFSET_DATA_BLOCKS 0x36
+#define EDID_OFFSET_LAST_BLOCK 0x6c
+#define EDID_OFFSET_PNPID 0x08
+#define EDID_OFFSET_SERIAL 0x0c
+
+static const char *conn_types[] =
+{
+   "None", "VGA", "DVI-I", "DVI-D", "DVI-A",
+   "Composite", "S-Video", "LVDS", "Component", "DIN",
+   "DisplayPort", "HDMI-A", "HDMI-B", "TV", "eDP", "Virtual", "DSI",
+};
+
+static void
+_output_debug(Ecore_Drm2_Output *output, const drmModeConnector *conn)
+{
+   Eina_List *l;
+   Ecore_Drm2_Output_Mode *omode;
+
+   DBG("Created New Output At %d,%d", output->x, output->y);
+   DBG("\tCrtc Pos: %d %d", output->ocrtc->x, output->ocrtc->y);
+   DBG("\tCrtc: %d", output->crtc_id);
+   DBG("\tConn: %d", output->conn_id);
+   DBG("\tName: %s", output->name);
+   DBG("\tMake: %s", output->make);
+   DBG("\tModel: %s", output->model);
+   DBG("\tSerial: %s", output->serial);
+   DBG("\tCloned: %d", output->cloned);
+   DBG("\tPrimary: %d", output->primary);
+   DBG("\tConnected: %d", output->connected);
+   DBG("\tEnabled: %d", output->enabled);
+
+   if (output->backlight.path)
+     {
+        DBG("\tBacklight");
+        switch (output->backlight.type)
+          {
+           case ECORE_DRM2_BACKLIGHT_RAW:
+             DBG("\t\tType: Raw");
+             break;
+           case ECORE_DRM2_BACKLIGHT_PLATFORM:
+             DBG("\t\tType: Platform");
+             break;
+           case ECORE_DRM2_BACKLIGHT_FIRMWARE:
+             DBG("\t\tType: Firmware");
+             break;
+          }
+        DBG("\t\tPath: %s", output->backlight.path);
+     }
+
+   EINA_LIST_FOREACH(output->modes, l, omode)
+     {
+        DBG("\tAdded Mode: %dx%d@%.1f%s%s%s",
+            omode->width, omode->height, (omode->refresh / 1000.0),
+            (omode->flags & DRM_MODE_TYPE_PREFERRED) ? ", preferred" : "",
+            (omode->flags & DRM_MODE_TYPE_DEFAULT) ? ", current" : "",
+            (conn->count_modes == 0) ? ", built-in" : "");
+     }
+}
+
+static void
+_cb_output_event_free(void *data EINA_UNUSED, void *event)
+{
+   Ecore_Drm2_Event_Output_Changed *ev;
+
+   ev = event;
+   eina_stringshare_del(ev->make);
+   eina_stringshare_del(ev->model);
+   eina_stringshare_del(ev->name);
+   free(ev);
+}
+
+static void
+_output_event_send(Ecore_Drm2_Output *output)
+{
+   Ecore_Drm2_Event_Output_Changed *ev;
+
+   ev = calloc(1, sizeof(Ecore_Drm2_Event_Output_Changed));
+   if (!ev) return;
+
+   ev->id = output->crtc_id;
+
+   ev->x = output->x;
+   ev->y = output->y;
+   ev->w = output->current_mode->width;
+   ev->h = output->current_mode->height;
+   ev->phys_width = output->pw;
+   ev->phys_height = output->ph;
+   ev->refresh = output->current_mode->refresh;
+
+   ev->scale = output->scale;
+   ev->subpixel = output->subpixel;
+   ev->transform = output->transform;
+   ev->connected = output->connected;
+   ev->enabled = output->enabled;
+
+   ev->name = eina_stringshare_ref(output->name);
+   ev->make = eina_stringshare_ref(output->make);
+   ev->model = eina_stringshare_ref(output->model);
+
+   ecore_event_add(ECORE_DRM2_EVENT_OUTPUT_CHANGED, ev,
+                   _cb_output_event_free, NULL);
+}
+
+static void
+_output_edid_parse_string(const uint8_t *data, char text[])
+{
+   int i = 0, rep = 0;
+
+   strncpy(text, (const char *)data, 12);
+
+   for (; text[i] != '\0'; i++)
+     {
+        if ((text[i] == '\n') || (text[i] == '\r'))
+          {
+             text[i] = '\0';
+             break;
+          }
+     }
+
+   for (i = 0; text[i] != '\0'; i++)
+     {
+        if (!isprint(text[i]))
+          {
+             text[i] = '-';
+             rep++;
+          }
+     }
+
+   if (rep > 4) text[0] = '\0';
+}
+
+static int
+_output_edid_parse(Ecore_Drm2_Output *output, const uint8_t *data, size_t len)
+{
+   int i = 0;
+   uint32_t serial;
+
+   if (len < 128) return -1;
+   if ((data[0] != 0x00) || (data[1] != 0xff)) return -1;
+
+   output->edid.pnp[0] = 'A' + ((data[EDID_OFFSET_PNPID + 0] & 0x7c) / 4) - 1;
+   output->edid.pnp[1] =
+     'A' + ((data[EDID_OFFSET_PNPID + 0] & 0x3) * 8) +
+     ((data[EDID_OFFSET_PNPID + 1] & 0xe0) / 32) - 1;
+   output->edid.pnp[2] = 'A' + (data[EDID_OFFSET_PNPID + 1] & 0x1f) - 1;
+   output->edid.pnp[3] = '\0';
+
+   serial = (uint32_t) data[EDID_OFFSET_SERIAL + 0];
+   serial += (uint32_t) data[EDID_OFFSET_SERIAL + 1] * 0x100;
+   serial += (uint32_t) data[EDID_OFFSET_SERIAL + 2] * 0x10000;
+   serial += (uint32_t) data[EDID_OFFSET_SERIAL + 3] * 0x1000000;
+   if (serial > 0)
+     sprintf(output->edid.serial, "%lu", (unsigned long)serial);
+
+   for (i = EDID_OFFSET_DATA_BLOCKS; i <= EDID_OFFSET_LAST_BLOCK; i += 18)
+     {
+        if (data[i] != 0) continue;
+        if (data[i + 2] != 0) continue;
+
+        if (data[i + 3] == EDID_DESCRIPTOR_DISPLAY_PRODUCT_NAME)
+          _output_edid_parse_string(&data[i + 5], output->edid.monitor);
+        else if (data[i + 3] == EDID_DESCRIPTOR_DISPLAY_PRODUCT_SERIAL_NUMBER)
+          _output_edid_parse_string(&data[i + 5], output->edid.serial);
+        else if (data[i + 3] == EDID_DESCRIPTOR_ALPHANUMERIC_DATA_STRING)
+          _output_edid_parse_string(&data[i + 5], output->edid.eisa);
+     }
+
+   return 0;
+}
+
+static void
+_output_edid_find(Ecore_Drm2_Output *output, const drmModeConnector *conn)
+{
+   drmModePropertyBlobPtr blob = NULL;
+   drmModePropertyPtr prop;
+   int i = 0, ret = 0;
+
+   for (; i < conn->count_props && !blob; i++)
+     {
+        if (!(prop = drmModeGetProperty(output->fd, conn->props[i])))
+          continue;
+        if ((prop->flags & DRM_MODE_PROP_BLOB) &&
+            (!strcmp(prop->name, "EDID")))
+          {
+             blob = drmModeGetPropertyBlob(output->fd, conn->prop_values[i]);
+          }
+        drmModeFreeProperty(prop);
+        if (blob) break;
+     }
+
+   if (!blob) return;
+
+   output->edid.blob = eina_memdup(blob->data, blob->length, 1);
+
+   ret = _output_edid_parse(output, blob->data, blob->length);
+   if (!ret)
+     {
+        if (output->edid.pnp[0] != '\0')
+          eina_stringshare_replace(&output->make, output->edid.pnp);
+        if (output->edid.monitor[0] != '\0')
+          eina_stringshare_replace(&output->model, output->edid.monitor);
+        if (output->edid.serial[0] != '\0')
+          eina_stringshare_replace(&output->serial, output->edid.serial);
+     }
+
+   drmModeFreePropertyBlob(blob);
+}
+
+static int
+_output_crtc_find(const drmModeRes *res, const drmModeConnector *conn, Ecore_Drm2_Device *dev)
+{
+   drmModeEncoder *enc;
+   uint32_t pcrtcs;
+   int i = 0, j = 0;
+
+   for (j = 0; j < conn->count_encoders; j++)
+     {
+        enc = drmModeGetEncoder(dev->fd, conn->encoders[j]);
+        if (!enc) continue;
+
+        pcrtcs = enc->possible_crtcs;
+        drmModeFreeEncoder(enc);
+
+        for (i = 0; i < res->count_crtcs; i++)
+          {
+             if ((pcrtcs & (1 << i)) &&
+                 (!(dev->alloc.crtc & (1 << res->crtcs[i]))))
+               return i;
+          }
+     }
+
+   return -1;
+}
+
+static char *
+_output_name_get(const drmModeConnector *conn)
+{
+   char name[DRM_CONNECTOR_NAME_LEN];
+   const char *type = NULL;
+
+   if (conn->connector_type < EINA_C_ARRAY_LENGTH(conn_types))
+     type = conn_types[conn->connector_type];
+   else
+     type = "UNKNOWN";
+
+   snprintf(name, sizeof(name), "%s-%d", type, conn->connector_type_id);
+   return strdup(name);
+}
+
+static Ecore_Drm2_Output_Mode *
+_output_mode_add(Ecore_Drm2_Output *output, const drmModeModeInfo *info)
+{
+   Ecore_Drm2_Output_Mode *mode;
+   uint64_t refresh;
+
+   mode = calloc(1, sizeof(Ecore_Drm2_Output_Mode));
+   if (!mode) return NULL;
+
+   mode->flags = 0;
+   mode->width = info->hdisplay;
+   mode->height = info->vdisplay;
+
+   refresh = (info->clock * 1000LL / info->htotal + info->vtotal / 2) /
+     info->vtotal;
+
+   if (info->flags & DRM_MODE_FLAG_INTERLACE)
+     refresh *= 2;
+   if (info->flags & DRM_MODE_FLAG_DBLSCAN)
+     refresh /= 2;
+   if (info->vscan > 1)
+     refresh /= info->vscan;
+
+   mode->refresh = refresh;
+   mode->info = *info;
+
+   if (info->type & DRM_MODE_TYPE_PREFERRED)
+     mode->flags |= DRM_MODE_TYPE_PREFERRED;
+
+   output->modes = eina_list_append(output->modes, mode);
+
+   return mode;
+}
+
+static void
+_output_modes_create(Ecore_Drm2_Device *dev, Ecore_Drm2_Output *output, const drmModeConnector *conn)
+{
+   int i = 0;
+   drmModeCrtc *crtc;
+   drmModeEncoder *enc;
+   drmModeModeInfo crtc_mode;
+   Ecore_Drm2_Output_Mode *omode;
+   Ecore_Drm2_Output_Mode *current = NULL, *preferred = NULL, *best = NULL;
+   Eina_List *l = NULL;
+
+   memset(&crtc_mode, 0, sizeof(crtc_mode));
+
+   enc = drmModeGetEncoder(dev->fd, conn->encoder_id);
+   if (enc)
+     {
+        crtc = drmModeGetCrtc(dev->fd, enc->crtc_id);
+        drmModeFreeEncoder(enc);
+        if (!crtc) return;
+        if (crtc->mode_valid) crtc_mode = crtc->mode;
+        drmModeFreeCrtc(crtc);
+     }
+
+   for (i = 0; i < conn->count_modes; i++)
+     {
+        omode = _output_mode_add(output, &conn->modes[i]);
+        if (!omode) continue;
+     }
+
+   EINA_LIST_REVERSE_FOREACH(output->modes, l, omode)
+     {
+        if (!memcmp(&crtc_mode, &omode->info, sizeof(crtc_mode)))
+          current = omode;
+        if (omode->flags & DRM_MODE_TYPE_PREFERRED)
+          preferred = omode;
+        best = omode;
+     }
+
+   if ((!current) && (crtc_mode.clock != 0))
+     {
+        current = _output_mode_add(output, &crtc_mode);
+        if (!current) goto err;
+     }
+
+   if (current) output->current_mode = current;
+   else if (preferred) output->current_mode = preferred;
+   else if (best) output->current_mode = best;
+
+   if (!output->current_mode) goto err;
+
+   output->current_mode->flags |= DRM_MODE_TYPE_DEFAULT;
+
+   return;
+
+err:
+   EINA_LIST_FREE(output->modes, omode)
+     free(omode);
+}
+
+static drmModePropertyPtr
+_output_dpms_property_get(int fd, const drmModeConnector *conn)
+{
+   drmModePropertyPtr prop;
+   int i = 0;
+
+   for (; i < conn->count_props; i++)
+     {
+        prop = drmModeGetProperty(fd, conn->props[i]);
+        if (!prop) continue;
+
+        if (!strcmp(prop->name, "DPMS")) return prop;
+
+        drmModeFreeProperty(prop);
+     }
+
+   return NULL;
+}
+
+static void
+_output_backlight_init(Ecore_Drm2_Output *output, unsigned int conn_type)
+{
+   Eina_List *devs, *l;
+   const char *dev, *t;
+   Eina_Bool found = EINA_FALSE;
+   Ecore_Drm2_Backlight_Type type = 0;
+
+   devs = eeze_udev_find_by_filter("backlight", NULL, NULL);
+
+   EINA_LIST_FOREACH(devs, l, dev)
+     {
+        t = eeze_udev_syspath_get_sysattr(dev, "type");
+        if (!t) continue;
+
+        if (!strcmp(t, "raw"))
+          type = ECORE_DRM2_BACKLIGHT_RAW;
+        else if (!strcmp(t, "platform"))
+          type = ECORE_DRM2_BACKLIGHT_PLATFORM;
+        else if (!strcmp(t, "firmware"))
+          type = ECORE_DRM2_BACKLIGHT_FIRMWARE;
+
+        if ((conn_type == DRM_MODE_CONNECTOR_LVDS) ||
+            (conn_type == DRM_MODE_CONNECTOR_eDP) ||
+            (type == ECORE_DRM2_BACKLIGHT_RAW))
+          found = EINA_TRUE;
+
+        eina_stringshare_del(t);
+        if (found) break;
+     }
+
+   if (found)
+     {
+        output->backlight.type = type;
+        output->backlight.path = eina_stringshare_add(dev);
+     }
+
+   EINA_LIST_FREE(devs, dev)
+     eina_stringshare_del(dev);
+}
+
+static void
+_output_scale_init(Ecore_Drm2_Output *output, Ecore_Drm2_Transform transform, unsigned int scale)
+{
+   output->transform = transform;
+
+   if ((output->enabled) && (output->current_mode))
+     {
+        switch (transform)
+          {
+           case ECORE_DRM2_TRANSFORM_90:
+           case ECORE_DRM2_TRANSFORM_270:
+           case ECORE_DRM2_TRANSFORM_FLIPPED_90:
+           case ECORE_DRM2_TRANSFORM_FLIPPED_270:
+             output->w = output->current_mode->height;
+             output->h = output->current_mode->width;
+             break;
+           case ECORE_DRM2_TRANSFORM_NORMAL:
+           case ECORE_DRM2_TRANSFORM_180:
+           case ECORE_DRM2_TRANSFORM_FLIPPED:
+           case ECORE_DRM2_TRANSFORM_FLIPPED_180:
+             output->w = output->current_mode->width;
+             output->h = output->current_mode->height;
+             break;
+           default:
+             break;
+          }
+     }
+
+   output->scale = scale;
+   output->w /= scale;
+   output->h /= scale;
+}
+
+static void
+_output_matrix_rotate_xy(Eina_Matrix3 *matrix, double x, double y)
+{
+   Eina_Matrix4 tmp, m;
+
+   eina_matrix4_identity(&tmp);
+   eina_matrix4_values_set(&tmp, x, y, 0, 0, -y, x, 0, 0,
+                           0, 0, 1, 0, 0, 0, 0, 1);
+
+   eina_matrix3_matrix4_to(&m, matrix);
+   eina_matrix4_multiply(&m, &m, &tmp);
+   eina_matrix4_matrix3_to(matrix, &m);
+}
+
+static void
+_output_matrix_update(Ecore_Drm2_Output *output)
+{
+   Eina_Matrix3 m3;
+
+   eina_matrix4_identity(&output->matrix);
+   eina_matrix4_matrix3_to(&m3, &output->matrix);
+   eina_matrix3_translate(&m3, -output->x, -output->y);
+
+   switch (output->transform)
+     {
+      case ECORE_DRM2_TRANSFORM_FLIPPED:
+      case ECORE_DRM2_TRANSFORM_FLIPPED_90:
+      case ECORE_DRM2_TRANSFORM_FLIPPED_180:
+      case ECORE_DRM2_TRANSFORM_FLIPPED_270:
+        eina_matrix3_translate(&m3, -output->w, 0);
+        break;
+      default:
+        break;
+     }
+
+   switch (output->transform)
+     {
+      case ECORE_DRM2_TRANSFORM_NORMAL:
+      case ECORE_DRM2_TRANSFORM_FLIPPED:
+      default:
+        break;
+      case ECORE_DRM2_TRANSFORM_90:
+      case ECORE_DRM2_TRANSFORM_FLIPPED_90:
+        eina_matrix3_translate(&m3, 0, -output->h);
+        _output_matrix_rotate_xy(&m3, 0, 1);
+        break;
+      case ECORE_DRM2_TRANSFORM_180:
+      case ECORE_DRM2_TRANSFORM_FLIPPED_180:
+        eina_matrix3_translate(&m3, -output->w, -output->h);
+        _output_matrix_rotate_xy(&m3, -1, 0);
+        break;
+      case ECORE_DRM2_TRANSFORM_270:
+      case ECORE_DRM2_TRANSFORM_FLIPPED_270:
+        eina_matrix3_translate(&m3, -output->w, 0);
+        _output_matrix_rotate_xy(&m3, 0, -1);
+        break;
+     }
+
+   if (output->scale != 1)
+     eina_matrix3_scale(&m3, output->scale, output->scale);
+
+   eina_matrix3_matrix4_to(&output->matrix, &m3);
+   eina_matrix4_inverse(&output->inverse, &output->matrix);
+}
+
+static Eina_Bool
+_output_create(Ecore_Drm2_Device *dev, const drmModeRes *res, const drmModeConnector *conn, int x, int y, int *w, Eina_Bool cloned)
+{
+   Ecore_Drm2_Output *output;
+   int i = 0;
+
+   if (w) *w = 0;
+
+   i = _output_crtc_find(res, conn, dev);
+   if (i < 0) return EINA_FALSE;
+
+   output = calloc(1, sizeof(Ecore_Drm2_Output));
+   if (!output) return EINA_FALSE;
+
+   output->fd = dev->fd;
+   output->x = x;
+   output->y = y;
+   output->cloned = cloned;
+   output->pw = conn->mmWidth;
+   output->ph = conn->mmHeight;
+
+   switch (conn->subpixel)
+     {
+      case DRM_MODE_SUBPIXEL_UNKNOWN:
+        output->subpixel = 0; // WL_OUTPUT_SUBPIXEL_UNKNOWN
+        break;
+      case DRM_MODE_SUBPIXEL_NONE:
+        output->subpixel = 1; // WL_OUTPUT_SUBPIXEL_NONE
+        break;
+      case DRM_MODE_SUBPIXEL_HORIZONTAL_RGB:
+        output->subpixel = 2; // WL_OUTPUT_SUBPIXEL_HORIZONTAL_RGB
+        break;
+      case DRM_MODE_SUBPIXEL_HORIZONTAL_BGR:
+        output->subpixel = 3; // WL_OUTPUT_SUBPIXEL_HORIZONTAL_BGR
+        break;
+      case DRM_MODE_SUBPIXEL_VERTICAL_RGB:
+        output->subpixel = 4; // WL_OUTPUT_SUBPIXEL_VERTICAL_RGB
+        break;
+      case DRM_MODE_SUBPIXEL_VERTICAL_BGR:
+        output->subpixel = 5; // WL_OUTPUT_SUBPIXEL_VERTICAL_BGR
+        break;
+      default:
+        output->subpixel = 0;
+        break;
+     }
+
+   output->name = eina_stringshare_add(_output_name_get(conn));
+   output->make = eina_stringshare_add("unknown");
+   output->model = eina_stringshare_add("unknown");
+   output->serial = eina_stringshare_add("unknown");
+
+   output->pipe = i;
+   output->crtc_id = res->crtcs[i];
+   output->conn_id = conn->connector_id;
+   output->conn_type = conn->connector_type;
+
+   output->connected = (conn->connection == DRM_MODE_CONNECTED);
+
+   output->ocrtc = drmModeGetCrtc(dev->fd, output->crtc_id);
+
+   output->dpms = _output_dpms_property_get(dev->fd, conn);
+
+   _output_backlight_init(output, conn->connector_type);
+
+   /* TODO: gamma */
+
+   _output_modes_create(dev, output, conn);
+
+   _output_edid_find(output, conn);
+
+   if (output->connected) output->enabled = EINA_TRUE;
+
+   _output_scale_init(output, ECORE_DRM2_TRANSFORM_NORMAL, 1);
+   _output_matrix_update(output);
+
+   if (!eina_list_count(dev->outputs))
+     output->primary = EINA_TRUE;
+
+   dev->alloc.crtc |= (1 << output->crtc_id);
+   dev->alloc.conn |= (1 << output->conn_id);
+   dev->outputs = eina_list_append(dev->outputs, output);
+
+   _output_debug(output, conn);
+
+   if ((output->enabled) && (output->current_mode))
+     {
+        if (w) *w = output->current_mode->width;
+     }
+
+   return EINA_TRUE;
+}
+
+static void
+_outputs_update(Ecore_Drm2_Device *dev)
+{
+   drmModeRes *res;
+   drmModeConnector *conn;
+   uint32_t connected = 0, disconnected = 0;
+   int i = 0, x = 0, y = 0;
+
+   res = drmModeGetResources(dev->fd);
+   if (!res) return;
+
+   for (i = 0; i < res->count_connectors; i++)
+     {
+        conn = drmModeGetConnector(dev->fd, res->connectors[i]);
+        if (!conn) continue;
+
+        if (conn->connection != DRM_MODE_CONNECTED) goto next;
+
+        connected |= (1 << res->connectors[i]);
+
+        if (!(dev->alloc.conn & (1 << res->connectors[i])))
+          {
+             if (dev->outputs)
+               {
+                  Ecore_Drm2_Output *last;
+
+                  last = eina_list_last_data_get(dev->outputs);
+                  if (last) x = last->x + last->current_mode->width;
+                  else x = 0;
+               }
+             else
+               x = 0;
+
+             if (!_output_create(dev, res, conn, x, y, NULL, EINA_TRUE))
+               goto next;
+          }
+
+next:
+        drmModeFreeConnector(conn);
+     }
+
+   drmModeFreeResources(res);
+
+   disconnected = (dev->alloc.conn & ~connected);
+   if (disconnected)
+     {
+        Ecore_Drm2_Output *output;
+        Eina_List *l;
+
+        EINA_LIST_FOREACH(dev->outputs, l, output)
+          {
+             if (disconnected & (1 << output->conn_id))
+               {
+                  disconnected &= ~(1 << output->conn_id);
+                  output->connected = EINA_FALSE;
+                  output->enabled = EINA_FALSE;
+                  _output_event_send(output);
+               }
+          }
+     }
+}
+
+static void
+_cb_output_event(const char *device EINA_UNUSED, Eeze_Udev_Event event EINA_UNUSED, void *data, Eeze_Udev_Watch *watch EINA_UNUSED)
+{
+   Ecore_Drm2_Device *dev;
+
+   dev = data;
+   _outputs_update(dev);
+}
+
+static void
+_output_destroy(Ecore_Drm2_Device *dev, Ecore_Drm2_Output *output)
+{
+   dev->alloc.crtc &= ~(1 << output->crtc_id);
+   dev->alloc.conn &= ~(1 << output->conn_id);
+
+   eina_stringshare_del(output->backlight.path);
+   eina_stringshare_del(output->name);
+   eina_stringshare_del(output->make);
+   eina_stringshare_del(output->model);
+   eina_stringshare_del(output->serial);
+
+   drmModeFreeProperty(output->dpms);
+   free(output->edid.blob);
+
+   free(output);
+}
+
+EAPI Eina_Bool
+ecore_drm2_outputs_create(Ecore_Drm2_Device *device)
+{
+   drmModeConnector *conn;
+   drmModeRes *res;
+   int i = 0, x = 0, y = 0, w = 0;
+   int events = 0;
+
+   EINA_SAFETY_ON_NULL_RETURN_VAL(device, EINA_FALSE);
+   EINA_SAFETY_ON_TRUE_RETURN_VAL((device->fd < 0), EINA_FALSE);
+
+   res = drmModeGetResources(device->fd);
+   if (!res) return EINA_FALSE;
+
+   device->crtcs = calloc(res->count_crtcs, sizeof(uint32_t));
+   if (!device->crtcs) goto err;
+
+   device->min.width = res->min_width;
+   device->min.height = res->min_height;
+   device->max.width = res->max_width;
+   device->max.height = res->max_height;
+
+   device->num_crtcs = res->count_crtcs;
+   memcpy(device->crtcs, res->crtcs, sizeof(uint32_t) * res->count_crtcs);
+
+   for (i = 0; i < res->count_connectors; i++)
+     {
+        conn = drmModeGetConnector(device->fd, res->connectors[i]);
+        if (!conn) continue;
+
+        if (!_output_create(device, res, conn, x, y, &w, EINA_FALSE))
+          goto next;
+
+        x += w;
+
+next:
+        drmModeFreeConnector(conn);
+     }
+
+   if (eina_list_count(device->outputs) < 1) goto err;
+
+   drmModeFreeResources(res);
+
+   events = (EEZE_UDEV_EVENT_ADD | EEZE_UDEV_EVENT_REMOVE |
+             EEZE_UDEV_EVENT_CHANGE);
+
+   device->watch =
+     eeze_udev_watch_add(EEZE_UDEV_TYPE_DRM, events,
+                         _cb_output_event, device);
+
+   return EINA_TRUE;
+
+err:
+   drmModeFreeResources(res);
+   return EINA_FALSE;
+}
+
+EAPI void
+ecore_drm2_outputs_destroy(Ecore_Drm2_Device *device)
+{
+   Ecore_Drm2_Output *output;
+
+   EINA_SAFETY_ON_NULL_RETURN(device);
+
+   EINA_LIST_FREE(device->outputs, output)
+     _output_destroy(device, output);
+}
+
+EAPI const Eina_List *
+ecore_drm2_outputs_get(Ecore_Drm2_Device *device)
+{
+   EINA_SAFETY_ON_NULL_RETURN_VAL(device, NULL);
+   return device->outputs;
+}
+
+EAPI int
+ecore_drm2_output_dpms_get(Ecore_Drm2_Output *output)
+{
+   drmModeObjectProperties *props;
+   drmModePropertyRes *prop;
+   int val = -1;
+   unsigned int i;
+
+   EINA_SAFETY_ON_NULL_RETURN_VAL(output, -1);
+
+   props =
+     drmModeObjectGetProperties(output->fd, output->conn_id,
+                                DRM_MODE_OBJECT_CONNECTOR);
+   if (!props) return -1;
+
+   for (i = 0; i < props->count_props; i++)
+     {
+        prop = drmModeGetProperty(output->fd, props->props[i]);
+        if (!prop) continue;
+
+        if (!strcmp(prop->name, "DPMS"))
+          val = props->prop_values[i];
+
+        drmModeFreeProperty(prop);
+     }
+
+   drmModeFreeObjectProperties(props);
+
+   return val;
+}
+
+EAPI void
+ecore_drm2_output_dpms_set(Ecore_Drm2_Output *output, int level)
+{
+   EINA_SAFETY_ON_NULL_RETURN(output);
+   EINA_SAFETY_ON_TRUE_RETURN(!output->enabled);
+
+   drmModeConnectorSetProperty(output->fd, output->conn_id,
+                               output->dpms->prop_id, level);
+}
+
+EAPI char *
+ecore_drm2_output_edid_get(Ecore_Drm2_Output *output)
+{
+   char *edid_str = NULL;
+   unsigned char *blob;
+
+   EINA_SAFETY_ON_NULL_RETURN_VAL(output, NULL);
+   EINA_SAFETY_ON_NULL_RETURN_VAL(output->edid.blob, NULL);
+
+   blob = output->edid.blob;
+
+   edid_str = malloc((128 * 2) + 1);
+   if (edid_str)
+     {
+        unsigned int k, kk;
+        const char *hexch = "0123456789abcdef";
+
+        for (kk = 0, k = 0; k < 128; k++)
+          {
+             edid_str[kk] = hexch[(blob[k] >> 4) & 0xf];
+             edid_str[kk + 1] = hexch[blob[k] & 0xf];
+             kk += 2;
+          }
+        edid_str[kk] = 0;
+     }
+
+   return edid_str;
+}
+
+EAPI Eina_Bool
+ecore_drm2_output_backlight_get(Ecore_Drm2_Output *output)
+{
+   EINA_SAFETY_ON_NULL_RETURN_VAL(output, EINA_FALSE);
+   return (output->backlight.path != NULL);
+}
+
+EAPI Ecore_Drm2_Output *
+ecore_drm2_output_find(Ecore_Drm2_Device *device, int x, int y)
+{
+   Eina_List *l;
+   Ecore_Drm2_Output *output;
+
+   EINA_SAFETY_ON_NULL_RETURN_VAL(device, NULL);
+
+   EINA_LIST_FOREACH(device->outputs, l, output)
+     {
+        int ox, oy, ow, oh;
+
+        if (!output->enabled) continue;
+
+        ox = output->x;
+        oy = output->y;
+        ow = output->current_mode->width;
+        oh = output->current_mode->height;
+
+        if (INSIDE(x, y, ox, oy, ow, oh))
+          return output;
+     }
+
+   return NULL;
+}
+
+EAPI void
+ecore_drm2_output_geometry_get(Ecore_Drm2_Output *output, int *x, int *y, int *w, int *h)
+{
+   EINA_SAFETY_ON_NULL_RETURN(output);
+   EINA_SAFETY_ON_TRUE_RETURN(!output->enabled);
+
+   if (x) *x = output->x;
+   if (y) *y = output->y;
+   if (w) *w = output->current_mode->width;
+   if (h) *h = output->current_mode->height;
+}
+
+EAPI unsigned int
+ecore_drm2_output_crtc_get(Ecore_Drm2_Output *output)
+{
+   EINA_SAFETY_ON_NULL_RETURN_VAL(output, 0);
+   return output->crtc_id;
+}
diff --git a/src/lib/ecore_drm2/ecore_drm2_private.h b/src/lib/ecore_drm2/ecore_drm2_private.h
index 6b4b90f0e5..2042e4388e 100644
--- a/src/lib/ecore_drm2/ecore_drm2_private.h
+++ b/src/lib/ecore_drm2/ecore_drm2_private.h
@@ -55,6 +55,107 @@ extern int _ecore_drm2_log_dom;
 # endif
 # define CRIT(...) EINA_LOG_DOM_CRIT(_ecore_drm2_log_dom, __VA_ARGS__)
 
+typedef enum _Ecore_Drm2_Backlight_Type
+{
+   ECORE_DRM2_BACKLIGHT_RAW,
+   ECORE_DRM2_BACKLIGHT_PLATFORM,
+   ECORE_DRM2_BACKLIGHT_FIRMWARE
+} Ecore_Drm2_Backlight_Type;
+
+typedef enum _Ecore_Drm2_Transform
+{
+   ECORE_DRM2_TRANSFORM_NORMAL,
+   ECORE_DRM2_TRANSFORM_90,
+   ECORE_DRM2_TRANSFORM_180,
+   ECORE_DRM2_TRANSFORM_270,
+   ECORE_DRM2_TRANSFORM_FLIPPED,
+   ECORE_DRM2_TRANSFORM_FLIPPED_90,
+   ECORE_DRM2_TRANSFORM_FLIPPED_180,
+   ECORE_DRM2_TRANSFORM_FLIPPED_270
+} Ecore_Drm2_Transform;
+
+typedef enum _Ecore_Drm2_Rotation
+{
+   ECORE_DRM2_ROTATION_NORMAL = 1,
+   ECORE_DRM2_ROTATION_90 = 2,
+   ECORE_DRM2_ROTATION_180 = 4,
+   ECORE_DRM2_ROTATION_270 = 8,
+   ECORE_DRM2_ROTATION_REFLECT_X = 16,
+   ECORE_DRM2_ROTATION_REFLECT_Y = 32
+} Ecore_Drm2_Rotation;
+
+struct _Ecore_Drm2_Fb
+{
+   int fd;
+   int w, h;
+   int depth, bpp;
+   uint32_t id, hdl;
+   uint32_t stride, size;
+   uint32_t format;
+
+   Eina_Bool gbm : 1;
+
+   void *mmap;
+};
+
+struct _Ecore_Drm2_Output_Mode
+{
+   uint32_t flags;
+   int32_t width, height;
+   uint32_t refresh;
+   drmModeModeInfo info;
+};
+
+struct _Ecore_Drm2_Output
+{
+   Eina_Stringshare *name;
+   Eina_Stringshare *make, *model, *serial;
+
+   int fd;
+   int pipe;
+   int x, y, w, h, pw, ph;
+
+   uint32_t subpixel;
+   uint32_t crtc_id, conn_id, conn_type;
+   uint32_t scale;
+
+   struct
+     {
+        char eisa[13];
+        char monitor[13];
+        char pnp[5];
+        char serial[13];
+        unsigned char *blob; // unused when doing atomic
+     } edid;
+
+   struct
+     {
+        const char *path;
+        int value, max;
+        Ecore_Drm2_Backlight_Type type;
+     } backlight;
+
+   drmModeCrtcPtr ocrtc;
+
+   Ecore_Drm2_Fb *current, *next;
+
+   Eina_Matrix4 matrix, inverse;
+   Ecore_Drm2_Transform transform;
+
+   /* unused when doing atomic */
+   drmModePropertyPtr dpms;
+
+   Ecore_Drm2_Output_Mode *current_mode;
+   Eina_List *modes;
+
+   Eina_List *planes;
+
+   Eina_Bool connected : 1;
+   Eina_Bool primary : 1;
+   Eina_Bool cloned : 1;
+   Eina_Bool enabled : 1;
+};
+
 struct _Ecore_Drm2_Device
 {
    Elput_Manager *em;