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-rw-r--r--minui/Android.mk2
-rw-r--r--minui/graphics.cpp5
-rw-r--r--minui/graphics.h1
-rw-r--r--minui/graphics_drm.cpp476
4 files changed, 484 insertions, 0 deletions
diff --git a/minui/Android.mk b/minui/Android.mk
index 5584612df..3057f452c 100644
--- a/minui/Android.mk
+++ b/minui/Android.mk
@@ -5,10 +5,12 @@ LOCAL_SRC_FILES := \
events.cpp \
graphics.cpp \
graphics_adf.cpp \
+ graphics_drm.cpp \
graphics_fbdev.cpp \
resources.cpp \
LOCAL_WHOLE_STATIC_LIBRARIES += libadf
+LOCAL_WHOLE_STATIC_LIBRARIES += libdrm
LOCAL_STATIC_LIBRARIES += libpng
LOCAL_MODULE := libminui
diff --git a/minui/graphics.cpp b/minui/graphics.cpp
index f09f1c6b0..c0eea9e38 100644
--- a/minui/graphics.cpp
+++ b/minui/graphics.cpp
@@ -369,6 +369,11 @@ int gr_init(void)
}
if (!gr_draw) {
+ gr_backend = open_drm();
+ gr_draw = gr_backend->init(gr_backend);
+ }
+
+ if (!gr_draw) {
gr_backend = open_fbdev();
gr_draw = gr_backend->init(gr_backend);
if (gr_draw == NULL) {
diff --git a/minui/graphics.h b/minui/graphics.h
index 81a923383..52968eb10 100644
--- a/minui/graphics.h
+++ b/minui/graphics.h
@@ -38,5 +38,6 @@ struct minui_backend {
minui_backend* open_fbdev();
minui_backend* open_adf();
+minui_backend* open_drm();
#endif
diff --git a/minui/graphics_drm.cpp b/minui/graphics_drm.cpp
new file mode 100644
index 000000000..03e33b775
--- /dev/null
+++ b/minui/graphics_drm.cpp
@@ -0,0 +1,476 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <drm_fourcc.h>
+#include <fcntl.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/cdefs.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <xf86drm.h>
+#include <xf86drmMode.h>
+
+#include "minui.h"
+#include "graphics.h"
+
+#define ARRAY_SIZE(A) (sizeof(A)/sizeof(*(A)))
+
+struct drm_surface {
+ GRSurface base;
+ uint32_t fb_id;
+ uint32_t handle;
+};
+
+static drm_surface *drm_surfaces[2];
+static int current_buffer;
+
+static drmModeCrtc *main_monitor_crtc;
+static drmModeConnector *main_monitor_connector;
+
+static int drm_fd = -1;
+
+static void drm_disable_crtc(int drm_fd, drmModeCrtc *crtc) {
+ if (crtc) {
+ drmModeSetCrtc(drm_fd, crtc->crtc_id,
+ 0, // fb_id
+ 0, 0, // x,y
+ NULL, // connectors
+ 0, // connector_count
+ NULL); // mode
+ }
+}
+
+static void drm_enable_crtc(int drm_fd, drmModeCrtc *crtc,
+ struct drm_surface *surface) {
+ int32_t ret;
+
+ ret = drmModeSetCrtc(drm_fd, crtc->crtc_id,
+ surface->fb_id,
+ 0, 0, // x,y
+ &main_monitor_connector->connector_id,
+ 1, // connector_count
+ &main_monitor_crtc->mode);
+
+ if (ret)
+ printf("drmModeSetCrtc failed ret=%d\n", ret);
+}
+
+static void drm_blank(minui_backend* backend __unused, bool blank) {
+ if (blank)
+ drm_disable_crtc(drm_fd, main_monitor_crtc);
+ else
+ drm_enable_crtc(drm_fd, main_monitor_crtc,
+ drm_surfaces[current_buffer]);
+}
+
+static void drm_destroy_surface(struct drm_surface *surface) {
+ struct drm_gem_close gem_close;
+ int ret;
+
+ if(!surface)
+ return;
+
+ if (surface->base.data)
+ munmap(surface->base.data,
+ surface->base.row_bytes * surface->base.height);
+
+ if (surface->fb_id) {
+ ret = drmModeRmFB(drm_fd, surface->fb_id);
+ if (ret)
+ printf("drmModeRmFB failed ret=%d\n", ret);
+ }
+
+ if (surface->handle) {
+ memset(&gem_close, 0, sizeof(gem_close));
+ gem_close.handle = surface->handle;
+
+ ret = drmIoctl(drm_fd, DRM_IOCTL_GEM_CLOSE, &gem_close);
+ if (ret)
+ printf("DRM_IOCTL_GEM_CLOSE failed ret=%d\n", ret);
+ }
+
+ free(surface);
+}
+
+static int drm_format_to_bpp(uint32_t format) {
+ switch(format) {
+ case DRM_FORMAT_ABGR8888:
+ case DRM_FORMAT_BGRA8888:
+ case DRM_FORMAT_RGBX8888:
+ case DRM_FORMAT_BGRX8888:
+ case DRM_FORMAT_XBGR8888:
+ case DRM_FORMAT_XRGB8888:
+ return 32;
+ case DRM_FORMAT_RGB565:
+ return 16;
+ default:
+ printf("Unknown format %d\n", format);
+ return 32;
+ }
+}
+
+static drm_surface *drm_create_surface(int width, int height) {
+ struct drm_surface *surface;
+ struct drm_mode_create_dumb create_dumb;
+ uint32_t format;
+ int ret;
+
+ surface = (struct drm_surface*)calloc(1, sizeof(*surface));
+ if (!surface) {
+ printf("Can't allocate memory\n");
+ return NULL;
+ }
+
+#if defined(RECOVERY_ABGR)
+ format = DRM_FORMAT_RGBA8888;
+#elif defined(RECOVERY_BGRA)
+ format = DRM_FORMAT_ARGB8888;
+#elif defined(RECOVERY_RGBX)
+ format = DRM_FORMAT_XBGR8888;
+#else
+ format = DRM_FORMAT_RGB565;
+#endif
+
+ memset(&create_dumb, 0, sizeof(create_dumb));
+ create_dumb.height = height;
+ create_dumb.width = width;
+ create_dumb.bpp = drm_format_to_bpp(format);
+ create_dumb.flags = 0;
+
+ ret = drmIoctl(drm_fd, DRM_IOCTL_MODE_CREATE_DUMB, &create_dumb);
+ if (ret) {
+ printf("DRM_IOCTL_MODE_CREATE_DUMB failed ret=%d\n",ret);
+ drm_destroy_surface(surface);
+ return NULL;
+ }
+ surface->handle = create_dumb.handle;
+
+ uint32_t handles[4], pitches[4], offsets[4];
+
+ handles[0] = surface->handle;
+ pitches[0] = create_dumb.pitch;
+ offsets[0] = 0;
+
+ ret = drmModeAddFB2(drm_fd, width, height,
+ format, handles, pitches, offsets,
+ &(surface->fb_id), 0);
+ if (ret) {
+ printf("drmModeAddFB2 failed ret=%d\n", ret);
+ drm_destroy_surface(surface);
+ return NULL;
+ }
+
+ struct drm_mode_map_dumb map_dumb;
+ memset(&map_dumb, 0, sizeof(map_dumb));
+ map_dumb.handle = create_dumb.handle;
+ ret = drmIoctl(drm_fd, DRM_IOCTL_MODE_MAP_DUMB, &map_dumb);
+ if (ret) {
+ printf("DRM_IOCTL_MODE_MAP_DUMB failed ret=%d\n",ret);
+ drm_destroy_surface(surface);
+ return NULL;;
+ }
+
+ surface->base.height = height;
+ surface->base.width = width;
+ surface->base.row_bytes = create_dumb.pitch;
+ surface->base.pixel_bytes = create_dumb.bpp / 8;
+ surface->base.data = (unsigned char*)
+ mmap(NULL,
+ surface->base.height * surface->base.row_bytes,
+ PROT_READ | PROT_WRITE, MAP_SHARED,
+ drm_fd, map_dumb.offset);
+ if (surface->base.data == MAP_FAILED) {
+ perror("mmap() failed");
+ drm_destroy_surface(surface);
+ return NULL;
+ }
+
+ return surface;
+}
+
+static drmModeCrtc *find_crtc_for_connector(int fd,
+ drmModeRes *resources,
+ drmModeConnector *connector) {
+ int i, j;
+ drmModeEncoder *encoder;
+ int32_t crtc;
+
+ /*
+ * Find the encoder. If we already have one, just use it.
+ */
+ if (connector->encoder_id)
+ encoder = drmModeGetEncoder(fd, connector->encoder_id);
+ else
+ encoder = NULL;
+
+ if (encoder && encoder->crtc_id) {
+ crtc = encoder->crtc_id;
+ drmModeFreeEncoder(encoder);
+ return drmModeGetCrtc(fd, crtc);
+ }
+
+ /*
+ * Didn't find anything, try to find a crtc and encoder combo.
+ */
+ crtc = -1;
+ for (i = 0; i < connector->count_encoders; i++) {
+ encoder = drmModeGetEncoder(fd, connector->encoders[i]);
+
+ if (encoder) {
+ for (j = 0; j < resources->count_crtcs; j++) {
+ if (!(encoder->possible_crtcs & (1 << j)))
+ continue;
+ crtc = resources->crtcs[j];
+ break;
+ }
+ if (crtc >= 0) {
+ drmModeFreeEncoder(encoder);
+ return drmModeGetCrtc(fd, crtc);
+ }
+ }
+ }
+
+ return NULL;
+}
+
+static drmModeConnector *find_used_connector_by_type(int fd,
+ drmModeRes *resources,
+ unsigned type) {
+ int i;
+ for (i = 0; i < resources->count_connectors; i++) {
+ drmModeConnector *connector;
+
+ connector = drmModeGetConnector(fd, resources->connectors[i]);
+ if (connector) {
+ if ((connector->connector_type == type) &&
+ (connector->connection == DRM_MODE_CONNECTED) &&
+ (connector->count_modes > 0))
+ return connector;
+
+ drmModeFreeConnector(connector);
+ }
+ }
+ return NULL;
+}
+
+static drmModeConnector *find_first_connected_connector(int fd,
+ drmModeRes *resources) {
+ int i;
+ for (i = 0; i < resources->count_connectors; i++) {
+ drmModeConnector *connector;
+
+ connector = drmModeGetConnector(fd, resources->connectors[i]);
+ if (connector) {
+ if ((connector->count_modes > 0) &&
+ (connector->connection == DRM_MODE_CONNECTED))
+ return connector;
+
+ drmModeFreeConnector(connector);
+ }
+ }
+ return NULL;
+}
+
+static drmModeConnector *find_main_monitor(int fd, drmModeRes *resources,
+ uint32_t *mode_index) {
+ unsigned i = 0;
+ int modes;
+ /* Look for LVDS/eDP/DSI connectors. Those are the main screens. */
+ unsigned kConnectorPriority[] = {
+ DRM_MODE_CONNECTOR_LVDS,
+ DRM_MODE_CONNECTOR_eDP,
+ DRM_MODE_CONNECTOR_DSI,
+ };
+
+ drmModeConnector *main_monitor_connector = NULL;
+ do {
+ main_monitor_connector = find_used_connector_by_type(fd,
+ resources,
+ kConnectorPriority[i]);
+ i++;
+ } while (!main_monitor_connector && i < ARRAY_SIZE(kConnectorPriority));
+
+ /* If we didn't find a connector, grab the first one that is connected. */
+ if (!main_monitor_connector)
+ main_monitor_connector =
+ find_first_connected_connector(fd, resources);
+
+ /* If we still didn't find a connector, give up and return. */
+ if (!main_monitor_connector)
+ return NULL;
+
+ *mode_index = 0;
+ for (modes = 0; modes < main_monitor_connector->count_modes; modes++) {
+ if (main_monitor_connector->modes[modes].type &
+ DRM_MODE_TYPE_PREFERRED) {
+ *mode_index = modes;
+ break;
+ }
+ }
+
+ return main_monitor_connector;
+}
+
+static void disable_non_main_crtcs(int fd,
+ drmModeRes *resources,
+ drmModeCrtc* main_crtc) {
+ int i;
+ drmModeCrtc* crtc;
+
+ for (i = 0; i < resources->count_connectors; i++) {
+ drmModeConnector *connector;
+
+ connector = drmModeGetConnector(fd, resources->connectors[i]);
+ crtc = find_crtc_for_connector(fd, resources, connector);
+ if (crtc->crtc_id != main_crtc->crtc_id)
+ drm_disable_crtc(fd, crtc);
+ drmModeFreeCrtc(crtc);
+ }
+}
+
+static GRSurface* drm_init(minui_backend* backend __unused) {
+ drmModeRes *res = NULL;
+ uint32_t selected_mode;
+ char *dev_name;
+ int width, height;
+ int ret, i;
+
+ /* Consider DRM devices in order. */
+ for (i = 0; i < DRM_MAX_MINOR; i++) {
+ uint64_t cap = 0;
+
+ ret = asprintf(&dev_name, DRM_DEV_NAME, DRM_DIR_NAME, i);
+ if (ret < 0)
+ continue;
+
+ drm_fd = open(dev_name, O_RDWR, 0);
+ free(dev_name);
+ if (drm_fd < 0)
+ continue;
+
+ /* We need dumb buffers. */
+ ret = drmGetCap(drm_fd, DRM_CAP_DUMB_BUFFER, &cap);
+ if (ret || cap == 0) {
+ close(drm_fd);
+ continue;
+ }
+
+ res = drmModeGetResources(drm_fd);
+ if (!res) {
+ close(drm_fd);
+ continue;
+ }
+
+ /* Use this device if it has at least one connected monitor. */
+ if (res->count_crtcs > 0 && res->count_connectors > 0)
+ if (find_first_connected_connector(drm_fd, res))
+ break;
+
+ drmModeFreeResources(res);
+ close(drm_fd);
+ res = NULL;
+ }
+
+ if (drm_fd < 0 || res == NULL) {
+ perror("cannot find/open a drm device");
+ return NULL;
+ }
+
+ main_monitor_connector = find_main_monitor(drm_fd,
+ res, &selected_mode);
+
+ if (!main_monitor_connector) {
+ printf("main_monitor_connector not found\n");
+ drmModeFreeResources(res);
+ close(drm_fd);
+ return NULL;
+ }
+
+ main_monitor_crtc = find_crtc_for_connector(drm_fd, res,
+ main_monitor_connector);
+
+ if (!main_monitor_crtc) {
+ printf("main_monitor_crtc not found\n");
+ drmModeFreeResources(res);
+ close(drm_fd);
+ return NULL;
+ }
+
+ disable_non_main_crtcs(drm_fd,
+ res, main_monitor_crtc);
+
+ main_monitor_crtc->mode = main_monitor_connector->modes[selected_mode];
+
+ width = main_monitor_crtc->mode.hdisplay;
+ height = main_monitor_crtc->mode.vdisplay;
+
+ drmModeFreeResources(res);
+
+ drm_surfaces[0] = drm_create_surface(width, height);
+ drm_surfaces[1] = drm_create_surface(width, height);
+ if (!drm_surfaces[0] || !drm_surfaces[1]) {
+ drm_destroy_surface(drm_surfaces[0]);
+ drm_destroy_surface(drm_surfaces[1]);
+ drmModeFreeResources(res);
+ close(drm_fd);
+ return NULL;
+ }
+
+ current_buffer = 0;
+
+ drm_enable_crtc(drm_fd, main_monitor_crtc, drm_surfaces[1]);
+
+ return &(drm_surfaces[0]->base);
+}
+
+static GRSurface* drm_flip(minui_backend* backend __unused) {
+ int ret;
+
+ ret = drmModePageFlip(drm_fd, main_monitor_crtc->crtc_id,
+ drm_surfaces[current_buffer]->fb_id, 0, NULL);
+ if (ret < 0) {
+ printf("drmModePageFlip failed ret=%d\n", ret);
+ return NULL;
+ }
+ current_buffer = 1 - current_buffer;
+ return &(drm_surfaces[current_buffer]->base);
+}
+
+static void drm_exit(minui_backend* backend __unused) {
+ drm_disable_crtc(drm_fd, main_monitor_crtc);
+ drm_destroy_surface(drm_surfaces[0]);
+ drm_destroy_surface(drm_surfaces[1]);
+ drmModeFreeCrtc(main_monitor_crtc);
+ drmModeFreeConnector(main_monitor_connector);
+ close(drm_fd);
+ drm_fd = -1;
+}
+
+static minui_backend drm_backend = {
+ .init = drm_init,
+ .flip = drm_flip,
+ .blank = drm_blank,
+ .exit = drm_exit,
+};
+
+minui_backend* open_drm() {
+ return &drm_backend;
+}