Add qcom overlay graphics support to minui
graphics_overlay.cpp is based on a mix of AOSP code for
graphics_fbdev.cpp along with overlay graphics code from CAF that
was brought into earlier versions of TWRP and then further adapted
and improved before being brought into this patch set.
Also added a rule to build a minuitest binary for testing the
minui engine to ensure proper operation on a device.
Change-Id: I3972d3a6baa7002615319421ac07d9299c3cec69
diff --git a/minui/graphics_overlay.cpp b/minui/graphics_overlay.cpp
new file mode 100644
index 0000000..2ba452a
--- /dev/null
+++ b/minui/graphics_overlay.cpp
@@ -0,0 +1,692 @@
+/*
+ * Copyright (C) 2014 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 <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <errno.h>
+
+#include <fcntl.h>
+#include <stdio.h>
+
+#include <sys/cdefs.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <sys/types.h>
+
+#include <linux/fb.h>
+#include <linux/kd.h>
+
+#ifdef MSM_BSP
+#include <linux/msm_mdp.h>
+#include <linux/msm_ion.h>
+#endif
+
+#include "minui.h"
+#include "graphics.h"
+
+#define MDP_V4_0 400
+#define MAX_DISPLAY_DIM 2048
+
+static GRSurface* overlay_init(minui_backend*);
+static GRSurface* overlay_flip(minui_backend*);
+static void overlay_blank(minui_backend*, bool);
+static void overlay_exit(minui_backend*);
+
+static GRSurface gr_framebuffer[2];
+static bool double_buffered;
+static GRSurface* gr_draw = NULL;
+static int displayed_buffer;
+
+static fb_var_screeninfo vi;
+static int fb_fd = -1;
+static bool isMDP5 = false;
+static int leftSplit = 0;
+static int rightSplit = 0;
+#define ALIGN(x, align) (((x) + ((align)-1)) & ~((align)-1))
+
+static size_t frame_size = 0;
+
+#ifdef MSM_BSP
+typedef struct {
+ unsigned char *mem_buf;
+ int size;
+ int ion_fd;
+ int mem_fd;
+ struct ion_handle_data handle_data;
+} memInfo;
+
+//Left and right overlay id
+static int overlayL_id = MSMFB_NEW_REQUEST;
+static int overlayR_id = MSMFB_NEW_REQUEST;
+
+static memInfo mem_info;
+#
+
+static int map_mdp_pixel_format()
+{
+ int format = MDP_RGB_565;
+#if defined(RECOVERY_BGRA)
+ format = MDP_BGRA_8888;
+#elif defined(RECOVERY_RGBX)
+ format = MDP_RGBA_8888;
+#endif
+ return format;
+}
+#endif // MSM_BSP
+
+static minui_backend my_backend = {
+ .init = overlay_init,
+ .flip = overlay_flip,
+ .blank = overlay_blank,
+ .exit = overlay_exit,
+};
+
+bool target_has_overlay(char *version)
+{
+ int ret;
+ int mdp_version;
+ bool overlay_supported = false;
+
+ if (strlen(version) >= 8) {
+ if(!strncmp(version, "msmfb", strlen("msmfb"))) {
+ char str_ver[4];
+ memcpy(str_ver, version + strlen("msmfb"), 3);
+ str_ver[3] = '\0';
+ mdp_version = atoi(str_ver);
+ if (mdp_version >= MDP_V4_0) {
+ overlay_supported = true;
+ }
+ } else if (!strncmp(version, "mdssfb", strlen("mdssfb"))) {
+ overlay_supported = true;
+ isMDP5 = true;
+ }
+ }
+
+ return overlay_supported;
+}
+
+minui_backend* open_overlay() {
+ fb_fix_screeninfo fi;
+ int fd;
+
+ fd = open("/dev/graphics/fb0", O_RDWR);
+ if (fd < 0) {
+ perror("open_overlay cannot open fb0");
+ return NULL;
+ }
+
+ if (ioctl(fd, FBIOGET_FSCREENINFO, &fi) < 0) {
+ perror("failed to get fb0 info");
+ close(fd);
+ return NULL;
+ }
+
+ if (target_has_overlay(fi.id)) {
+#ifdef MSM_BSP
+ close(fd);
+ return &my_backend;
+#else
+ printf("Overlay graphics may work (%s), but not enabled. Use TW_TARGET_USES_QCOM_BSP := true to enable.\n", fi.id);
+#endif
+ }
+ close(fd);
+ return NULL;
+}
+
+static void overlay_blank(minui_backend* backend __unused, bool blank)
+{
+#if defined(TW_NO_SCREEN_BLANK) && defined(TW_BRIGHTNESS_PATH) && defined(TW_MAX_BRIGHTNESS)
+ int fd;
+ char brightness[4];
+ snprintf(brightness, 4, "%03d", TW_MAX_BRIGHTNESS/2);
+
+ fd = open(TW_BRIGHTNESS_PATH, O_RDWR);
+ if (fd < 0) {
+ perror("cannot open LCD backlight");
+ return;
+ }
+ write(fd, blank ? "000" : brightness, 3);
+ close(fd);
+#else
+ int ret;
+
+ ret = ioctl(fb_fd, FBIOBLANK, blank ? FB_BLANK_POWERDOWN : FB_BLANK_UNBLANK);
+ if (ret < 0)
+ perror("ioctl(): blank");
+#endif
+}
+
+static void set_displayed_framebuffer(unsigned n)
+{
+ if (n > 1 || !double_buffered) return;
+
+ vi.yres_virtual = gr_framebuffer[0].height * 2;
+ vi.yoffset = n * gr_framebuffer[0].height;
+ vi.bits_per_pixel = gr_framebuffer[0].pixel_bytes * 8;
+ if (ioctl(fb_fd, FBIOPUT_VSCREENINFO, &vi) < 0) {
+ perror("active fb swap failed");
+ }
+ displayed_buffer = n;
+}
+
+#ifdef MSM_BSP
+void setDisplaySplit(void) {
+ char split[64] = {0};
+ if (!isMDP5)
+ return;
+ FILE* fp = fopen("/sys/class/graphics/fb0/msm_fb_split", "r");
+ if (fp) {
+ //Format "left right" space as delimiter
+ if(fread(split, sizeof(char), 64, fp)) {
+ leftSplit = atoi(split);
+ printf("Left Split=%d\n",leftSplit);
+ char *rght = strpbrk(split, " ");
+ if (rght)
+ rightSplit = atoi(rght + 1);
+ printf("Right Split=%d\n", rightSplit);
+ }
+ } else {
+ printf("Failed to open mdss_fb_split node\n");
+ }
+ if (fp)
+ fclose(fp);
+}
+
+int getLeftSplit(void) {
+ //Default even split for all displays with high res
+ int lSplit = vi.xres / 2;
+
+ //Override if split published by driver
+ if (leftSplit)
+ lSplit = leftSplit;
+
+ return lSplit;
+}
+
+int getRightSplit(void) {
+ return rightSplit;
+}
+
+int free_ion_mem(void) {
+ int ret = 0;
+
+ if (mem_info.mem_buf)
+ munmap(mem_info.mem_buf, mem_info.size);
+
+ if (mem_info.ion_fd >= 0) {
+ ret = ioctl(mem_info.ion_fd, ION_IOC_FREE, &mem_info.handle_data);
+ if (ret < 0)
+ perror("free_mem failed ");
+ }
+
+ if (mem_info.mem_fd >= 0)
+ close(mem_info.mem_fd);
+ if (mem_info.ion_fd >= 0)
+ close(mem_info.ion_fd);
+
+ memset(&mem_info, 0, sizeof(mem_info));
+ mem_info.mem_fd = -1;
+ mem_info.ion_fd = -1;
+ return 0;
+}
+
+int alloc_ion_mem(unsigned int size)
+{
+ int result;
+ struct ion_fd_data fd_data;
+ struct ion_allocation_data ionAllocData;
+
+ mem_info.ion_fd = open("/dev/ion", O_RDWR|O_DSYNC);
+ if (mem_info.ion_fd < 0) {
+ perror("ERROR: Can't open ion ");
+ return -errno;
+ }
+
+ ionAllocData.flags = 0;
+ ionAllocData.len = size;
+ ionAllocData.align = sysconf(_SC_PAGESIZE);
+#ifdef NEW_ION_HEAP
+ ionAllocData.heap_id_mask =
+#else
+ ionAllocData.heap_mask =
+#endif
+ ION_HEAP(ION_IOMMU_HEAP_ID) |
+ ION_HEAP(ION_SYSTEM_CONTIG_HEAP_ID);
+
+ result = ioctl(mem_info.ion_fd, ION_IOC_ALLOC, &ionAllocData);
+ if(result){
+ perror("ION_IOC_ALLOC Failed ");
+ close(mem_info.ion_fd);
+ return result;
+ }
+
+ fd_data.handle = ionAllocData.handle;
+ mem_info.handle_data.handle = ionAllocData.handle;
+ result = ioctl(mem_info.ion_fd, ION_IOC_MAP, &fd_data);
+ if (result) {
+ perror("ION_IOC_MAP Failed ");
+ free_ion_mem();
+ return result;
+ }
+ mem_info.mem_buf = (unsigned char *)mmap(NULL, size, PROT_READ |
+ PROT_WRITE, MAP_SHARED, fd_data.fd, 0);
+ mem_info.mem_fd = fd_data.fd;
+
+ if (!mem_info.mem_buf) {
+ perror("ERROR: mem_buf MAP_FAILED ");
+ free_ion_mem();
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+bool isDisplaySplit(void) {
+ if (vi.xres > MAX_DISPLAY_DIM)
+ return true;
+ //check if right split is set by driver
+ if (getRightSplit())
+ return true;
+
+ return false;
+}
+
+int allocate_overlay(int fd, GRSurface gr_fb[])
+{
+ int ret = 0;
+
+ if (!isDisplaySplit()) {
+ // Check if overlay is already allocated
+ if (MSMFB_NEW_REQUEST == overlayL_id) {
+ struct mdp_overlay overlayL;
+
+ memset(&overlayL, 0 , sizeof (struct mdp_overlay));
+
+ /* Fill Overlay Data */
+ overlayL.src.width = ALIGN(gr_fb[0].width, 32);
+ overlayL.src.height = gr_fb[0].height;
+ overlayL.src.format = map_mdp_pixel_format();
+ overlayL.src_rect.w = gr_fb[0].width;
+ overlayL.src_rect.h = gr_fb[0].height;
+ overlayL.dst_rect.w = gr_fb[0].width;
+ overlayL.dst_rect.h = gr_fb[0].height;
+ overlayL.alpha = 0xFF;
+ overlayL.transp_mask = MDP_TRANSP_NOP;
+ overlayL.id = MSMFB_NEW_REQUEST;
+ ret = ioctl(fd, MSMFB_OVERLAY_SET, &overlayL);
+ if (ret < 0) {
+ perror("Overlay Set Failed");
+ return ret;
+ }
+ overlayL_id = overlayL.id;
+ }
+ } else {
+ float xres = vi.xres;
+ int lSplit = getLeftSplit();
+ float lSplitRatio = lSplit / xres;
+ float lCropWidth = gr_fb[0].width * lSplitRatio;
+ int lWidth = lSplit;
+ int rWidth = gr_fb[0].width - lSplit;
+ int height = gr_fb[0].height;
+
+ if (MSMFB_NEW_REQUEST == overlayL_id) {
+
+ struct mdp_overlay overlayL;
+
+ memset(&overlayL, 0 , sizeof (struct mdp_overlay));
+
+ /* Fill OverlayL Data */
+ overlayL.src.width = ALIGN(gr_fb[0].width, 32);
+ overlayL.src.height = gr_fb[0].height;
+ overlayL.src.format = map_mdp_pixel_format();
+ overlayL.src_rect.x = 0;
+ overlayL.src_rect.y = 0;
+ overlayL.src_rect.w = lCropWidth;
+ overlayL.src_rect.h = gr_fb[0].height;
+ overlayL.dst_rect.x = 0;
+ overlayL.dst_rect.y = 0;
+ overlayL.dst_rect.w = lWidth;
+ overlayL.dst_rect.h = height;
+ overlayL.alpha = 0xFF;
+ overlayL.transp_mask = MDP_TRANSP_NOP;
+ overlayL.id = MSMFB_NEW_REQUEST;
+ ret = ioctl(fd, MSMFB_OVERLAY_SET, &overlayL);
+ if (ret < 0) {
+ perror("OverlayL Set Failed");
+ return ret;
+ }
+ overlayL_id = overlayL.id;
+ }
+ if (MSMFB_NEW_REQUEST == overlayR_id) {
+ struct mdp_overlay overlayR;
+
+ memset(&overlayR, 0 , sizeof (struct mdp_overlay));
+
+ /* Fill OverlayR Data */
+ overlayR.src.width = ALIGN(gr_fb[0].width, 32);
+ overlayR.src.height = gr_fb[0].height;
+ overlayR.src.format = map_mdp_pixel_format();
+ overlayR.src_rect.x = lCropWidth;
+ overlayR.src_rect.y = 0;
+ overlayR.src_rect.w = gr_fb[0].width - lCropWidth;
+ overlayR.src_rect.h = gr_fb[0].height;
+ overlayR.dst_rect.x = 0;
+ overlayR.dst_rect.y = 0;
+ overlayR.dst_rect.w = rWidth;
+ overlayR.dst_rect.h = height;
+ overlayR.alpha = 0xFF;
+ overlayR.flags = MDSS_MDP_RIGHT_MIXER;
+ overlayR.transp_mask = MDP_TRANSP_NOP;
+ overlayR.id = MSMFB_NEW_REQUEST;
+ ret = ioctl(fd, MSMFB_OVERLAY_SET, &overlayR);
+ if (ret < 0) {
+ perror("OverlayR Set Failed");
+ return ret;
+ }
+ overlayR_id = overlayR.id;
+ }
+
+ }
+ return 0;
+}
+
+int overlay_display_frame(int fd, void* data, size_t size)
+{
+ int ret = 0;
+ struct msmfb_overlay_data ovdataL, ovdataR;
+ struct mdp_display_commit ext_commit;
+
+ if (!isDisplaySplit()) {
+ if (overlayL_id == MSMFB_NEW_REQUEST) {
+ perror("display_frame failed, no overlay\n");
+ return -EINVAL;
+ }
+
+ memcpy(mem_info.mem_buf, data, size);
+
+ memset(&ovdataL, 0, sizeof(struct msmfb_overlay_data));
+
+ ovdataL.id = overlayL_id;
+ ovdataL.data.flags = 0;
+ ovdataL.data.offset = 0;
+ ovdataL.data.memory_id = mem_info.mem_fd;
+ ret = ioctl(fd, MSMFB_OVERLAY_PLAY, &ovdataL);
+ if (ret < 0) {
+ perror("overlay_display_frame failed, overlay play Failed\n");
+ return ret;
+ }
+ } else {
+
+ if (overlayL_id == MSMFB_NEW_REQUEST) {
+ perror("display_frame failed, no overlayL \n");
+ return -EINVAL;
+ }
+
+ memcpy(mem_info.mem_buf, data, size);
+
+ memset(&ovdataL, 0, sizeof(struct msmfb_overlay_data));
+
+ ovdataL.id = overlayL_id;
+ ovdataL.data.flags = 0;
+ ovdataL.data.offset = 0;
+ ovdataL.data.memory_id = mem_info.mem_fd;
+ ret = ioctl(fd, MSMFB_OVERLAY_PLAY, &ovdataL);
+ if (ret < 0) {
+ perror("overlay_display_frame failed, overlayL play Failed\n");
+ return ret;
+ }
+
+ if (overlayR_id == MSMFB_NEW_REQUEST) {
+ perror("display_frame failed, no overlayR \n");
+ return -EINVAL;
+ }
+ memset(&ovdataR, 0, sizeof(struct msmfb_overlay_data));
+
+ ovdataR.id = overlayR_id;
+ ovdataR.data.flags = 0;
+ ovdataR.data.offset = 0;
+ ovdataR.data.memory_id = mem_info.mem_fd;
+ ret = ioctl(fd, MSMFB_OVERLAY_PLAY, &ovdataR);
+ if (ret < 0) {
+ perror("overlay_display_frame failed, overlayR play Failed\n");
+ return ret;
+ }
+ }
+ memset(&ext_commit, 0, sizeof(struct mdp_display_commit));
+ ext_commit.flags = MDP_DISPLAY_COMMIT_OVERLAY;
+ ext_commit.wait_for_finish = 1;
+ ret = ioctl(fd, MSMFB_DISPLAY_COMMIT, &ext_commit);
+ if (ret < 0) {
+ perror("overlay_display_frame failed, overlay commit Failed\n!");
+ }
+
+ return ret;
+}
+
+static GRSurface* overlay_flip(minui_backend* backend __unused) {
+ if (double_buffered) {
+#if defined(RECOVERY_BGRA)
+ // In case of BGRA, do some byte swapping
+ unsigned int idx;
+ unsigned char tmp;
+ unsigned char* ucfb_vaddr = (unsigned char*)gr_draw->data;
+ for (idx = 0 ; idx < (gr_draw->height * gr_draw->row_bytes);
+ idx += 4) {
+ tmp = ucfb_vaddr[idx];
+ ucfb_vaddr[idx ] = ucfb_vaddr[idx + 2];
+ ucfb_vaddr[idx + 2] = tmp;
+ }
+#endif
+ // Change gr_draw to point to the buffer currently displayed,
+ // then flip the driver so we're displaying the other buffer
+ // instead.
+ gr_draw = gr_framebuffer + displayed_buffer;
+ set_displayed_framebuffer(1-displayed_buffer);
+ overlay_display_frame(fb_fd, gr_draw->data, frame_size);
+ } else {
+ // Copy from the in-memory surface to the framebuffer.
+ overlay_display_frame(fb_fd, gr_draw->data, frame_size);
+ }
+ return gr_draw;
+}
+
+int free_overlay(int fd)
+{
+ int ret = 0;
+ struct mdp_display_commit ext_commit;
+
+ if (!isDisplaySplit()) {
+ if (overlayL_id != MSMFB_NEW_REQUEST) {
+ ret = ioctl(fd, MSMFB_OVERLAY_UNSET, &overlayL_id);
+ if (ret) {
+ perror("Overlay Unset Failed");
+ overlayL_id = MSMFB_NEW_REQUEST;
+ return ret;
+ }
+ }
+ } else {
+
+ if (overlayL_id != MSMFB_NEW_REQUEST) {
+ ret = ioctl(fd, MSMFB_OVERLAY_UNSET, &overlayL_id);
+ if (ret) {
+ perror("OverlayL Unset Failed");
+ overlayL_id = MSMFB_NEW_REQUEST;
+ return ret;
+ }
+ }
+
+ if (overlayR_id != MSMFB_NEW_REQUEST) {
+ ret = ioctl(fd, MSMFB_OVERLAY_UNSET, &overlayR_id);
+ if (ret) {
+ perror("OverlayR Unset Failed");
+ overlayR_id = MSMFB_NEW_REQUEST;
+ return ret;
+ }
+ }
+ }
+ memset(&ext_commit, 0, sizeof(struct mdp_display_commit));
+ ext_commit.flags = MDP_DISPLAY_COMMIT_OVERLAY;
+ ext_commit.wait_for_finish = 1;
+ ret = ioctl(fd, MSMFB_DISPLAY_COMMIT, &ext_commit);
+ if (ret < 0) {
+ perror("ERROR: Clear MSMFB_DISPLAY_COMMIT failed!");
+ overlayL_id = MSMFB_NEW_REQUEST;
+ overlayR_id = MSMFB_NEW_REQUEST;
+ return ret;
+ }
+ overlayL_id = MSMFB_NEW_REQUEST;
+ overlayR_id = MSMFB_NEW_REQUEST;
+
+ return 0;
+}
+
+static GRSurface* overlay_init(minui_backend* backend) {
+ int fd = open("/dev/graphics/fb0", O_RDWR);
+ if (fd == -1) {
+ perror("cannot open fb0");
+ return NULL;
+ }
+
+ fb_fix_screeninfo fi;
+ if (ioctl(fd, FBIOGET_FSCREENINFO, &fi) < 0) {
+ perror("failed to get fb0 info");
+ close(fd);
+ return NULL;
+ }
+
+ if (ioctl(fd, FBIOGET_VSCREENINFO, &vi) < 0) {
+ perror("failed to get fb0 info");
+ close(fd);
+ return NULL;
+ }
+
+ // We print this out for informational purposes only, but
+ // throughout we assume that the framebuffer device uses an RGBX
+ // pixel format. This is the case for every development device I
+ // have access to. For some of those devices (eg, hammerhead aka
+ // Nexus 5), FBIOGET_VSCREENINFO *reports* that it wants a
+ // different format (XBGR) but actually produces the correct
+ // results on the display when you write RGBX.
+ //
+ // If you have a device that actually *needs* another pixel format
+ // (ie, BGRX, or 565), patches welcome...
+
+ printf("fb0 reports (possibly inaccurate):\n"
+ " vi.bits_per_pixel = %d\n"
+ " vi.red.offset = %3d .length = %3d\n"
+ " vi.green.offset = %3d .length = %3d\n"
+ " vi.blue.offset = %3d .length = %3d\n",
+ vi.bits_per_pixel,
+ vi.red.offset, vi.red.length,
+ vi.green.offset, vi.green.length,
+ vi.blue.offset, vi.blue.length);
+
+ void* bits = malloc(vi.xres_virtual * vi.yres * (vi.bits_per_pixel / 8));
+ if (bits == NULL) {
+ perror("failed to malloc framebuffer");
+ close(fd);
+ return NULL;
+ }
+
+ memset(bits, 0, fi.smem_len);
+
+ gr_framebuffer[0].width = vi.xres;
+ gr_framebuffer[0].height = vi.yres;
+ gr_framebuffer[0].row_bytes = fi.line_length;
+ gr_framebuffer[0].pixel_bytes = vi.bits_per_pixel / 8;
+ gr_framebuffer[0].data = reinterpret_cast<uint8_t*>(bits);
+ memset(gr_framebuffer[0].data, 0, gr_framebuffer[0].height * gr_framebuffer[0].row_bytes);
+
+ /* check if we can use double buffering */
+ if (vi.yres * fi.line_length * 2 <= fi.smem_len) {
+ double_buffered = true;
+ printf("double buffered.\n");
+ memcpy(gr_framebuffer+1, gr_framebuffer, sizeof(GRSurface));
+ gr_framebuffer[1].data = gr_framebuffer[0].data +
+ gr_framebuffer[0].height * gr_framebuffer[0].row_bytes;
+
+ gr_draw = gr_framebuffer+1;
+
+ } else {
+ double_buffered = false;
+ printf("single buffered.\n");
+ // Without double-buffering, we allocate RAM for a buffer to
+ // draw in, and then "flipping" the buffer consists of a
+ // memcpy from the buffer we allocated to the framebuffer.
+
+ gr_draw = (GRSurface*) malloc(sizeof(GRSurface));
+ if (gr_draw == NULL) {
+ printf("Failed to malloc gr_draw for single buffering.\n");
+ return NULL;
+ } else {
+ memcpy(gr_draw, gr_framebuffer, sizeof(GRSurface));
+ gr_draw->data = (unsigned char*) malloc(gr_draw->height * gr_draw->row_bytes);
+ if (!gr_draw->data) {
+ perror("failed to allocate in-memory surface");
+ return NULL;
+ }
+ }
+ }
+
+ memset(gr_draw->data, 0, gr_draw->height * gr_draw->row_bytes);
+ fb_fd = fd;
+ set_displayed_framebuffer(0);
+
+ frame_size = fi.line_length * vi.yres;
+
+ printf("framebuffer: %d (%d x %d)\n", fb_fd, gr_draw->width, gr_draw->height);
+
+ overlay_blank(backend, true);
+ overlay_blank(backend, false);
+
+ if (!alloc_ion_mem(fi.line_length * vi.yres))
+ allocate_overlay(fb_fd, gr_framebuffer);
+
+ return gr_draw;
+}
+
+static void overlay_exit(minui_backend* backend __unused) {
+ free_overlay(fb_fd);
+ free_ion_mem();
+
+ close(fb_fd);
+ fb_fd = -1;
+
+ if (!double_buffered && gr_draw) {
+ free(gr_draw->data);
+ free(gr_draw);
+ }
+ gr_draw = NULL;
+ if (gr_framebuffer[0].data) {
+ free(gr_framebuffer[0].data);
+ gr_framebuffer[0].data = NULL;
+ }
+}
+#else // MSM_BSP
+static GRSurface* overlay_flip(minui_backend* backend __unused) {
+ return NULL;
+}
+
+static GRSurface* overlay_init(minui_backend* backend __unused) {
+ return NULL;
+}
+
+static void overlay_exit(minui_backend* backend __unused) {
+ return;
+}
+#endif // MSM_BSP