static void free_drm_resources(gfx_ctx_drm_data_t *drm)
{
if (!drm)
return;
/* Restore original CRTC. */
drm_restore_crtc();
if (g_gbm_surface)
gbm_surface_destroy(g_gbm_surface);
if (g_gbm_dev)
gbm_device_destroy(g_gbm_dev);
drm_free();
if (drm->drm)
if (g_drm_fd >= 0)
filestream_close(drm->drm);
g_gbm_surface = NULL;
g_gbm_dev = NULL;
g_drm_fd = -1;
}
static void gfx_ctx_drm_destroy_resources(gfx_ctx_drm_data_t *drm)
{
if (!drm)
return;
/* Make sure we acknowledge all page-flips. */
gfx_ctx_drm_wait_flip(true);
switch (drm_api)
{
case GFX_CTX_OPENGL_API:
case GFX_CTX_OPENGL_ES_API:
case GFX_CTX_OPENVG_API:
#ifdef HAVE_EGL
egl_destroy(&drm->egl);
#endif
break;
case GFX_CTX_NONE:
default:
break;
}
/* Restore original CRTC. */
drm_restore_crtc();
free_drm_resources(drm);
g_drm_mode = NULL;
g_crtc_id = 0;
g_connector_id = 0;
drm->fb_width = 0;
drm->fb_height = 0;
g_bo = NULL;
g_next_bo = NULL;
}
static void *gfx_ctx_drm_init(void *video_driver)
{
int fd, i;
unsigned monitor_index;
unsigned gpu_index = 0;
const char *gpu = NULL;
struct string_list *gpu_descriptors = NULL;
gfx_ctx_drm_data_t *drm = (gfx_ctx_drm_data_t*)
calloc(1, sizeof(gfx_ctx_drm_data_t));
if (!drm)
return NULL;
fd = -1;
gpu_descriptors = dir_list_new("/dev/dri", NULL, false, false);
nextgpu:
drm_restore_crtc();
free_drm_resources(drm);
if (!gpu_descriptors || gpu_index == gpu_descriptors->size)
{
RARCH_ERR("[KMS]: Couldn't find a suitable DRM device.\n");
goto error;
}
gpu = gpu_descriptors->elems[gpu_index++].data;
drm->drm = retro_fopen(gpu, RFILE_MODE_READ_WRITE, -1);
if (!drm->drm)
{
RARCH_WARN("[KMS]: Couldn't open DRM device.\n");
goto nextgpu;
}
fd = retro_get_fd(drm->drm);
if (!drm_get_resources(fd))
goto nextgpu;
if (!drm_get_connector(fd))
goto nextgpu;
if (!drm_get_encoder(fd))
goto nextgpu;
drm_setup(fd);
/* First mode is assumed to be the "optimal"
* one for get_video_size() purposes. */
drm->fb_width = g_drm_connector->modes[0].hdisplay;
drm->fb_height = g_drm_connector->modes[0].vdisplay;
g_gbm_dev = gbm_create_device(fd);
if (!g_gbm_dev)
{
RARCH_WARN("[KMS]: Couldn't create GBM device.\n");
goto nextgpu;
}
dir_list_free(gpu_descriptors);
/* Setup the flip handler. */
g_drm_fds.fd = fd;
g_drm_fds.events = POLLIN;
g_drm_evctx.version = DRM_EVENT_CONTEXT_VERSION;
g_drm_evctx.page_flip_handler = drm_flip_handler;
g_drm_fd = fd;
return drm;
error:
dir_list_free(gpu_descriptors);
gfx_ctx_drm_destroy_resources(drm);
if (drm)
free(drm);
return NULL;
}
