recovery: minui: add adf backend

Change-Id: I1ad97b5b62bddbcb1104fa0b4e54415b793a4194
Signed-off-by: Greg Hackmann <ghackmann@google.com>

4 files changed, 266 insertions, 5 deletions

diff --git a/minui/Android.mk b/minui/Android.mk
index 5cc84ac..df4aac1 100644
--- a/minui/Android.mk
+++ b/minui/Android.mk
@@ -1,12 +1,15 @@
 LOCAL_PATH := $(call my-dir)
 include $(CLEAR_VARS)
 
-LOCAL_SRC_FILES := graphics.c graphics_fbdev.c events.c resources.c
+LOCAL_SRC_FILES := graphics.c graphics_adf.c graphics_fbdev.c events.c \
+	resources.c
 
 LOCAL_C_INCLUDES +=\
     external/libpng\
     external/zlib
 
+LOCAL_WHOLE_STATIC_LIBRARIES += libadf
+
 LOCAL_MODULE := libminui
 
 # This used to compare against values in double-quotes (which are just
diff --git a/minui/graphics.c b/minui/graphics.c
index 32b3361..6049d85 100644
--- a/minui/graphics.c
+++ b/minui/graphics.c
@@ -369,10 +369,20 @@ int gr_init(void)
         return -1;
     }
 
-    gr_backend = open_fbdev();
-    gr_draw = gr_backend->init(gr_backend);
-    if (gr_draw == NULL) {
-        return -1;
+    gr_backend = open_adf();
+    if (gr_backend) {
+        gr_draw = gr_backend->init(gr_backend);
+        if (!gr_draw) {
+            gr_backend->exit(gr_backend);
+        }
+    }
+
+    if (!gr_draw) {
+        gr_backend = open_fbdev();
+        gr_draw = gr_backend->init(gr_backend);
+        if (gr_draw == NULL) {
+            return -1;
+        }
     }
 
     overscan_offset_x = gr_draw->width * overscan_percent / 100;
diff --git a/minui/graphics.h b/minui/graphics.h
index 94b89a5..993e986 100644
--- a/minui/graphics.h
+++ b/minui/graphics.h
@@ -41,6 +41,7 @@ typedef struct minui_backend {
 } minui_backend;
 
 minui_backend* open_fbdev();
+minui_backend* open_adf();
 
 #ifdef __cplusplus
 }
diff --git a/minui/graphics_adf.c b/minui/graphics_adf.c
new file mode 100644
index 0000000..ac6d64e
--- /dev/null
+++ b/minui/graphics_adf.c
@@ -0,0 +1,247 @@
+/*
+ * 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 <errno.h>
+#include <fcntl.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include <sys/cdefs.h>
+#include <sys/mman.h>
+
+#include <adf/adf.h>
+
+#include "graphics.h"
+
+struct adf_surface_pdata {
+    GRSurface base;
+    int fd;
+    __u32 offset;
+    __u32 pitch;
+};
+
+struct adf_pdata {
+    minui_backend base;
+    int intf_fd;
+    adf_id_t eng_id;
+    __u32 format;
+
+    unsigned int current_surface;
+    unsigned int n_surfaces;
+    struct adf_surface_pdata surfaces[2];
+};
+
+static gr_surface adf_flip(struct minui_backend *backend);
+static void adf_blank(struct minui_backend *backend, bool blank);
+
+static int adf_surface_init(struct adf_pdata *pdata,
+        struct drm_mode_modeinfo *mode, struct adf_surface_pdata *surf)
+{
+    memset(surf, 0, sizeof(*surf));
+
+    surf->fd = adf_interface_simple_buffer_alloc(pdata->intf_fd, mode->hdisplay,
+            mode->vdisplay, pdata->format, &surf->offset, &surf->pitch);
+    if (surf->fd < 0)
+        return surf->fd;
+
+    surf->base.width = mode->hdisplay;
+    surf->base.height = mode->vdisplay;
+    surf->base.row_bytes = surf->pitch;
+    surf->base.pixel_bytes = (pdata->format == DRM_FORMAT_RGB565) ? 2 : 4;
+
+    surf->base.data = mmap(NULL, surf->pitch * surf->base.height, PROT_WRITE,
+            MAP_SHARED, surf->fd, surf->offset);
+    if (surf->base.data == MAP_FAILED) {
+        close(surf->fd);
+        return -errno;
+    }
+
+    return 0;
+}
+
+static int adf_interface_init(struct adf_pdata *pdata)
+{
+    struct adf_interface_data intf_data;
+    int ret = 0;
+    int err;
+
+    err = adf_get_interface_data(pdata->intf_fd, &intf_data);
+    if (err < 0)
+        return err;
+
+    err = adf_surface_init(pdata, &intf_data.current_mode, &pdata->surfaces[0]);
+    if (err < 0) {
+        fprintf(stderr, "allocating surface 0 failed: %s\n", strerror(-err));
+        ret = err;
+        goto done;
+    }
+
+    err = adf_surface_init(pdata, &intf_data.current_mode,
+            &pdata->surfaces[1]);
+    if (err < 0) {
+        fprintf(stderr, "allocating surface 1 failed: %s\n", strerror(-err));
+        memset(&pdata->surfaces[1], 0, sizeof(pdata->surfaces[1]));
+        pdata->n_surfaces = 1;
+    } else {
+        pdata->n_surfaces = 2;
+    }
+
+done:
+    adf_free_interface_data(&intf_data);
+    return ret;
+}
+
+static int adf_device_init(struct adf_pdata *pdata, struct adf_device *dev)
+{
+    adf_id_t intf_id;
+    int intf_fd;
+    int err;
+
+    err = adf_find_simple_post_configuration(dev, &pdata->format, 1, &intf_id,
+            &pdata->eng_id);
+    if (err < 0)
+        return err;
+
+    err = adf_device_attach(dev, pdata->eng_id, intf_id);
+    if (err < 0 && err != -EALREADY)
+        return err;
+
+    pdata->intf_fd = adf_interface_open(dev, intf_id, O_RDWR);
+    if (pdata->intf_fd < 0)
+        return pdata->intf_fd;
+
+    err = adf_interface_init(pdata);
+    if (err < 0) {
+        close(pdata->intf_fd);
+        pdata->intf_fd = -1;
+    }
+
+    return err;
+}
+
+static gr_surface adf_init(minui_backend *backend)
+{
+    struct adf_pdata *pdata = (struct adf_pdata *)backend;
+    adf_id_t *dev_ids = NULL;
+    ssize_t n_dev_ids, i;
+    gr_surface ret;
+
+#if defined(RECOVERY_BGRA)
+    pdata->format = DRM_FORMAT_BGRA8888;
+#elif defined(RECOVERY_RGBX)
+    pdata->format = DRM_FORMAT_RGBX8888;
+#else
+    pdata->format = DRM_FORMAT_RGB565;
+#endif
+
+    n_dev_ids = adf_devices(&dev_ids);
+    if (n_dev_ids == 0) {
+        return NULL;
+    } else if (n_dev_ids < 0) {
+        fprintf(stderr, "enumerating adf devices failed: %s\n",
+                strerror(-n_dev_ids));
+        return NULL;
+    }
+
+    pdata->intf_fd = -1;
+
+    for (i = 0; i < n_dev_ids && pdata->intf_fd < 0; i++) {
+        struct adf_device dev;
+
+        int err = adf_device_open(dev_ids[i], O_RDWR, &dev);
+        if (err < 0) {
+            fprintf(stderr, "opening adf device %u failed: %s\n", dev_ids[i],
+                    strerror(-err));
+            continue;
+        }
+
+        err = adf_device_init(pdata, &dev);
+        if (err < 0)
+            fprintf(stderr, "initializing adf device %u failed: %s\n",
+                    dev_ids[i], strerror(-err));
+
+        adf_device_close(&dev);
+    }
+
+    free(dev_ids);
+
+    if (pdata->intf_fd < 0)
+        return NULL;
+
+    ret = adf_flip(backend);
+
+    adf_blank(backend, true);
+    adf_blank(backend, false);
+
+    return ret;
+}
+
+static gr_surface adf_flip(struct minui_backend *backend)
+{
+    struct adf_pdata *pdata = (struct adf_pdata *)backend;
+    struct adf_surface_pdata *surf = &pdata->surfaces[pdata->current_surface];
+
+    int fence_fd = adf_interface_simple_post(pdata->intf_fd, pdata->eng_id,
+            surf->base.width, surf->base.height, pdata->format, surf->fd,
+            surf->offset, surf->pitch, -1);
+    if (fence_fd >= 0)
+        close(fence_fd);
+
+    pdata->current_surface = (pdata->current_surface + 1) % pdata->n_surfaces;
+    return &pdata->surfaces[pdata->current_surface].base;
+}
+
+static void adf_blank(struct minui_backend *backend, bool blank)
+{
+    struct adf_pdata *pdata = (struct adf_pdata *)backend;
+    adf_interface_blank(pdata->intf_fd,
+            blank ? DRM_MODE_DPMS_OFF : DRM_MODE_DPMS_ON);
+}
+
+static void adf_surface_destroy(struct adf_surface_pdata *surf)
+{
+    munmap(surf->base.data, surf->pitch * surf->base.height);
+    close(surf->fd);
+}
+
+static void adf_exit(struct minui_backend *backend)
+{
+    struct adf_pdata *pdata = (struct adf_pdata *)backend;
+    unsigned int i;
+
+    for (i = 0; i < pdata->n_surfaces; i++)
+        adf_surface_destroy(&pdata->surfaces[i]);
+    if (pdata->intf_fd >= 0)
+        close(pdata->intf_fd);
+    free(pdata);
+}
+
+minui_backend *open_adf()
+{
+    struct adf_pdata *pdata = calloc(1, sizeof(*pdata));
+    if (!pdata) {
+        perror("allocating adf backend failed");
+        return NULL;
+    }
+
+    pdata->base.init = adf_init;
+    pdata->base.flip = adf_flip;
+    pdata->base.blank = adf_blank;
+    pdata->base.exit = adf_exit;
+    return &pdata->base;
+}