ecore-drm: Add Ecore_Drm code

@feature: Add Ecore_Drm library code for setting up drm card, outputs,
virtual terminals, framebuffers, and input for use with ecore_evas drm
code.

Signed-off-by: Chris Michael <cp.michael@samsung.com>

1 files changed, 151 insertions, 0 deletions

diff --git a/src/lib/ecore_drm/ecore_drm_fb.c b/src/lib/ecore_drm/ecore_drm_fb.c
new file mode 100644
index 0000000000..40dd473ed9
--- /dev/null
+++ b/src/lib/ecore_drm/ecore_drm_fb.c
@@ -0,0 +1,151 @@
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include "ecore_drm_private.h"
+
+/**
+ * @defgroup Ecore_Drm_Fb_Group
+ * 
+ */
+
+/* TODO: DOXY !! */
+
+EAPI Ecore_Drm_Fb *
+ecore_drm_fb_create(Ecore_Drm_Device *dev, int width, int height)
+{
+   Ecore_Drm_Fb *fb;
+   struct drm_mode_create_dumb carg;
+   struct drm_mode_destroy_dumb darg;
+   struct drm_mode_map_dumb marg;
+
+   if (!(fb = calloc(1, sizeof(Ecore_Drm_Fb)))) return NULL;
+
+   memset(&carg, 0, sizeof(struct drm_mode_create_dumb));
+
+   carg.bpp = 32; // FIXME: Hard-coded depth
+   carg.width = width;
+   carg.height = height;
+
+   if (drmIoctl(dev->drm.fd, DRM_IOCTL_MODE_CREATE_DUMB, &carg))
+     {
+        ERR("Could not create dumb framebuffer: %m");
+        goto create_err;
+     }
+
+   fb->from_client = EINA_TRUE;
+   fb->hdl = carg.handle;
+   fb->stride = carg.pitch;
+   fb->size = carg.size;
+   fb->fd = dev->drm.fd;
+
+   if (drmModeAddFB(dev->drm.fd, width, height, 24, 32, 
+                    fb->stride, fb->hdl, &fb->id))
+     {
+        ERR("Could not add framebuffer: %m");
+        goto add_err;
+     }
+
+   memset(&marg, 0, sizeof(struct drm_mode_map_dumb));
+   marg.handle = fb->hdl;
+   if (drmIoctl(dev->drm.fd, DRM_IOCTL_MODE_MAP_DUMB, &marg))
+     {
+        ERR("Could not map framebuffer: %m");
+        goto map_err;
+     }
+
+   fb->mmap = 
+     mmap(0, fb->size, PROT_WRITE | PROT_READ, MAP_SHARED, 
+          dev->drm.fd, marg.offset);
+   if (fb->mmap == MAP_FAILED)
+     {
+        ERR("Could not mmap framebuffer space: %m");
+        goto map_err;
+     }
+
+   memset(fb->mmap, 0, fb->size);
+
+   return fb;
+
+map_err:
+   drmModeRmFB(fb->fd, fb->id);
+add_err:
+   memset(&darg, 0, sizeof(struct drm_mode_destroy_dumb));
+   darg.handle = fb->hdl;
+   drmIoctl(dev->drm.fd, DRM_IOCTL_MODE_DESTROY_DUMB, &darg);
+create_err:
+   free(fb);
+   return NULL;
+}
+
+EAPI void 
+ecore_drm_fb_destroy(Ecore_Drm_Fb *fb)
+{
+   struct drm_mode_destroy_dumb darg;
+
+   if ((!fb) || (!fb->mmap)) return;
+
+   if (fb->id) drmModeRmFB(fb->fd, fb->id);
+   munmap(fb->mmap, fb->size);
+   memset(&darg, 0, sizeof(struct drm_mode_destroy_dumb));
+   darg.handle = fb->hdl;
+   drmIoctl(fb->fd, DRM_IOCTL_MODE_DESTROY_DUMB, &darg);
+   free(fb);
+}
+
+/* #ifdef HAVE_GBM */
+/* static void  */
+/* _ecore_drm_fb_user_data_destroy(struct gbm_bo *bo EINA_UNUSED, void *data) */
+/* { */
+/*    Ecore_Drm_Fb *fb; */
+
+/*    if (!(fb = data)) return; */
+/*    ecore_drm_fb_destroy(fb); */
+/* } */
+
+/* Ecore_Drm_Fb * */
+/* _ecore_drm_fb_bo_get(Ecore_Drm_Device *dev, struct gbm_bo *bo) */
+/* { */
+/*    Ecore_Drm_Fb *fb; */
+/*    unsigned int width, height; */
+/*    unsigned int h[4], p[4], o[4]; */
+/*    int ret = -1; */
+
+/*    if ((fb = gbm_bo_get_user_data(bo))) return fb; */
+
+/*    if (!(fb = calloc(1, sizeof(Ecore_Drm_Fb)))) return NULL; */
+
+/*    fb->bo = bo; */
+
+/*    width = gbm_bo_get_width(bo); */
+/*    height = gbm_bo_get_height(bo); */
+/*    fb->stride = gbm_bo_get_stride(bo); */
+/*    fb->hdl = gbm_bo_get_handle(bo).u32; */
+/*    fb->size = (fb->stride * height); */
+/*    fb->fd = dev->drm.fd; */
+
+/*    h[0] = fb->hdl; */
+/*    p[0] = fb->stride; */
+/*    o[0] = 0; */
+
+/*    ret = drmModeAddFB2(dev->drm.fd, width, height, dev->format, h, p, o,  */
+/*                        &fb->id, 0); */
+/*    if (ret) */
+/*      { */
+/*         ret = drmModeAddFB(dev->drm.fd, width, height, 24, 32,  */
+/*                            fb->stride, fb->hdl, &fb->id); */
+
+/*      } */
+
+/*    if (ret) */
+/*      { */
+/*         ERR("Error during ModeAddFb"); */
+/*         free(fb); */
+/*         return NULL; */
+/*      } */
+
+/*    gbm_bo_set_user_data(bo, fb, _ecore_drm_fb_user_data_destroy); */
+
+/*    return fb; */
+/* } */
+/* #endif */