sdm: drm: Add support for default non-atomic mode

Add support for booting up with default non-atomic mode
Add libdrmutils that currently has:
DRMMaster:
    Creates a master DRM session
    Converts ION handles to DRM FB_ID
DRMResMgr:
    Enables a default display path by providing APIs for
    connector id, crtc id, mode etc

Change-Id: I1dc697d2cc5e3fa744c99e2c9ddd57bf06e78c4f
CRs-fixed: 1114808

Android.mk

@@ -3,7 +3,7 @@ display-hals := include libqservice libqdutils $(sdm-libs)/utils $(sdm-libs)/cor
 
 ifneq ($(TARGET_IS_HEADLESS), true)
     display-hals += libcopybit liblight libmemtrack hdmi_cec \
-                    $(sdm-libs)/hwc $(sdm-libs)/hwc2 gpu_tonemapper
+                    $(sdm-libs)/hwc $(sdm-libs)/hwc2 gpu_tonemapper libdrmutils
 endif
 
 ifneq ($(TARGET_USES_GRALLOC1), true)

common.mk

@@ -4,6 +4,9 @@ display_top := $(call my-dir)
 #Common C flags
 common_flags := -DDEBUG_CALC_FPS -Wno-missing-field-initializers
 common_flags += -Wconversion -Wall -Werror -std=c++11
+ifneq ($(TARGET_IS_HEADLESS), true)
+    common_flags += -DCOMPILE_DRM
+endif
 
 ifeq ($(TARGET_USES_COLOR_METADATA), true)
 common_flags += -DUSE_COLOR_METADATA
@@ -28,6 +31,7 @@ common_includes += $(display_top)/libqservice
 common_includes += $(display_top)/gpu_tonemapper
 ifneq ($(TARGET_IS_HEADLESS), true)
     common_includes += $(display_top)/libcopybit
+    common_includes += $(display_top)/libdrmutils
 endif
 
 common_includes += $(display_top)/include

libdrmutils/Android.mk

@@ -0,0 +1,15 @@
+LOCAL_PATH := $(call my-dir)
+include $(CLEAR_VARS)
+
+LOCAL_MODULE                  := libdrmutils
+LOCAL_MODULE_TAGS             := optional
+LOCAL_C_INCLUDES              := $(TARGET_OUT_INTERMEDIATES)/KERNEL_OBJ/usr/include \
+                                 external/libdrm
+LOCAL_SHARED_LIBRARIES        := libdrm
+LOCAL_CFLAGS                  := -DLOG_TAG=\"DRMUTILS\" -Wall -std=c++11 -Werror
+LOCAL_CLANG                   := true
+LOCAL_ADDITIONAL_DEPENDENCIES := $(TARGET_OUT_INTERMEDIATES)/KERNEL_OBJ/usr
+LOCAL_SRC_FILES               := drm_master.cpp drm_res_mgr.cpp
+LOCAL_COPY_HEADERS_TO         := qcom/display
+LOCAL_COPY_HEADERS            := drm_master.h drm_res_mgr.h
+include $(BUILD_SHARED_LIBRARY)

libdrmutils/drm_logger.h

@@ -0,0 +1,75 @@
+/*
+* Copyright (c) 2017, The Linux Foundation. All rights reserved.
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions are
+* met:
+*   * Redistributions of source code must retain the above copyright
+*     notice, this list of conditions and the following disclaimer.
+*   * Redistributions in binary form must reproduce the above
+*     copyright notice, this list of conditions and the following
+*     disclaimer in the documentation and/or other materials provided
+*     with the distribution.
+*   * Neither the name of The Linux Foundation nor the names of its
+*     contributors may be used to endorse or promote products derived
+*     from this software without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+* ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef __DRM_LOGGER_H__
+#define __DRM_LOGGER_H__
+
+#include <utility>
+
+namespace drm_utils {
+
+class DRMLogger {
+ public:
+  virtual ~DRMLogger() {}
+  virtual void Error(const char *format, ...) = 0;
+  virtual void Info(const char *format, ...) = 0;
+  virtual void Debug(const char *format, ...) = 0;
+
+  static void Set(DRMLogger *logger) { s_instance = logger; }
+  static DRMLogger *Get() { return s_instance; }
+
+ private:
+  static DRMLogger *s_instance;
+};
+
+template <typename... T>
+void DRM_LOGE(const char *format, T&&... args) {
+  if (DRMLogger::Get()) {
+    DRMLogger::Get()->Error(format, std::forward<T>(args)...);
+  }
+}
+
+template <typename... T>
+void DRM_LOGI(const char *format, T&&... args) {
+  if (DRMLogger::Get()) {
+    DRMLogger::Get()->Info(format, std::forward<T>(args)...);
+  }
+}
+
+template <typename... T>
+void DRM_LOGD_IF(bool pred, const char *format, T&&... args) {
+  if (pred && DRMLogger::Get()) {
+    DRMLogger::Get()->Debug(format, std::forward<T>(args)...);
+  }
+}
+
+}  // namespace drm_utils
+
+#endif  // __DRM_LOGGER_H__
+

libdrmutils/drm_master.cpp

@@ -0,0 +1,137 @@
+/*
+* Copyright (c) 2017, The Linux Foundation. All rights reserved.
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions are
+* met:
+*   * Redistributions of source code must retain the above copyright
+*     notice, this list of conditions and the following disclaimer.
+*   * Redistributions in binary form must reproduce the above
+*     copyright notice, this list of conditions and the following
+*     disclaimer in the documentation and/or other materials provided
+*     with the distribution.
+*   * Neither the name of The Linux Foundation nor the names of its
+*     contributors may be used to endorse or promote products derived
+*     from this software without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+* ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <errno.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <xf86drm.h>
+#include <xf86drmMode.h>
+#include <drm/drm_fourcc.h>
+
+#include <algorithm>
+#include <iterator>
+
+#include "drm_master.h"
+
+#define __CLASS__ "DRMMaster"
+
+using std::mutex;
+using std::lock_guard;
+using std::begin;
+using std::copy;
+using std::end;
+using std::fill;
+
+namespace drm_utils {
+
+DRMLogger *DRMLogger::s_instance = nullptr;
+DRMMaster *DRMMaster::s_instance = nullptr;
+mutex DRMMaster::s_lock;
+
+int DRMMaster::GetInstance(DRMMaster **master) {
+  lock_guard<mutex> obj(s_lock);
+
+  if (!s_instance) {
+    s_instance = new DRMMaster();
+    if (s_instance->Init() < 0) {
+      delete s_instance;
+      s_instance = nullptr;
+      return -ENODEV;
+    }
+  }
+
+  *master = s_instance;
+  return 0;
+}
+
+int DRMMaster::Init() {
+  dev_fd_ = drmOpen("msm_drm", nullptr);
+  if (dev_fd_ < 0) {
+    DRM_LOGE("%s::%s: drmOpen failed with error %d", __CLASS__, __FUNCTION__, dev_fd_);
+    return -ENODEV;
+  }
+
+  return 0;
+}
+
+DRMMaster::~DRMMaster() {
+  drmClose(dev_fd_);
+  dev_fd_ = -1;
+}
+
+int DRMMaster::CreateFbId(const DRMBuffer &drm_buffer, uint32_t *gem_handle, uint32_t *fb_id) {
+  int ret = drmPrimeFDToHandle(dev_fd_, drm_buffer.fd, gem_handle);
+  if (ret) {
+    DRM_LOGE("%s::%s: drmPrimeFDToHandle failed with error %d", __CLASS__, __FUNCTION__, ret);
+    return ret;
+  }
+
+  uint32_t gem_handles[4] = {0};
+  uint32_t pitches[4] = {0};
+  uint32_t offsets[4] = {0};
+  uint64_t modifier[4] = {0};
+
+  fill(begin(gem_handles), begin(gem_handles) + drm_buffer.num_planes, *gem_handle);
+  copy(begin(drm_buffer.stride), end(drm_buffer.stride), begin(pitches));
+  copy(begin(drm_buffer.offset), end(drm_buffer.offset), begin(offsets));
+  fill(begin(modifier), begin(modifier) + drm_buffer.num_planes, drm_buffer.drm_format_modifier);
+
+  ret = drmModeAddFB3(dev_fd_, drm_buffer.width, drm_buffer.height, drm_buffer.drm_format,
+                      gem_handles, pitches, offsets, modifier, fb_id, DRM_MODE_FB_MODIFIERS);
+  if (ret) {
+    DRM_LOGE("%s::%s: drmModeAddFB3 failed with error %d", __CLASS__, __FUNCTION__, ret);
+    struct drm_gem_close gem_close = {};
+    gem_close.handle = *gem_handle;
+    int ret1 = drmIoctl(dev_fd_, DRM_IOCTL_GEM_CLOSE, &gem_close);
+    if (ret1) {
+      DRM_LOGE("drmIoctl::DRM_IOCTL_GEM_CLOSE failed with error %d", ret1);
+    }
+  }
+
+  return ret;
+}
+
+int DRMMaster::RemoveFbId(uint32_t gem_handle, uint32_t fb_id) {
+  int ret = drmModeRmFB(dev_fd_, fb_id);
+  if (ret) {
+    DRM_LOGE("%s::%s: drmModeRmFB failed with error %d", __CLASS__, __FUNCTION__, ret);
+  }
+
+  struct drm_gem_close gem_close = {};
+  gem_close.handle = gem_handle;
+  ret = drmIoctl(dev_fd_, DRM_IOCTL_GEM_CLOSE, &gem_close);
+  if (ret) {
+    DRM_LOGE("drmIoctl::DRM_IOCTL_GEM_CLOSE failed with error %d", ret);
+  }
+
+  return ret;
+}
+
+}  // namespace drm_utils

libdrmutils/drm_master.h

@@ -0,0 +1,94 @@
+/*
+* Copyright (c) 2017, The Linux Foundation. All rights reserved.
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions are
+* met:
+*   * Redistributions of source code must retain the above copyright
+*     notice, this list of conditions and the following disclaimer.
+*   * Redistributions in binary form must reproduce the above
+*     copyright notice, this list of conditions and the following
+*     disclaimer in the documentation and/or other materials provided
+*     with the distribution.
+*   * Neither the name of The Linux Foundation nor the names of its
+*     contributors may be used to endorse or promote products derived
+*     from this software without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+* ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef __DRM_MASTER_H__
+#define __DRM_MASTER_H__
+
+#include <mutex>
+
+#include "drm_logger.h"
+
+namespace drm_utils {
+
+struct DRMBuffer {
+  int fd = -1;
+  uint32_t width = 0;
+  uint32_t height = 0;
+  uint32_t drm_format = 0;
+  uint64_t drm_format_modifier = 0;
+  uint32_t stride[4] = {};
+  uint32_t offset[4] = {};
+  uint32_t num_planes = 1;
+};
+
+class DRMMaster {
+ public:
+  ~DRMMaster();
+  /* Converts from ION fd --> Prime Handle --> FB_ID.
+   * Input:
+   *   drm_buffer: A DRMBuffer obj that packages description of buffer
+   * Output:
+   *   fb_id: Pointer to store DRM framebuffer id into
+   * Returns:
+   *   ioctl error code
+   */
+  int CreateFbId(const DRMBuffer &drm_buffer, uint32_t *gem_handle, uint32_t *fb_id);
+  /* Removes the fb_id from DRM
+   * Input:
+   *   fb_id: DRM FB to be removed
+   * Returns:
+   *   ioctl error code
+   */
+  int RemoveFbId(uint32_t gem_handle, uint32_t fb_id);
+  /* Poplulates master DRM fd
+   * Input:
+   *   fd: Pointer to store master fd into
+   */
+  void GetHandle(int *fd) { *fd = dev_fd_; }
+
+  /* Creates an instance of DRMMaster if it doesn't exist and initializes it. Threadsafe.
+   * Input:
+   *   master: Pointer to store a pointer to the instance
+   * Returns:
+   *   -ENODEV if device cannot be opened or initilization fails
+   */
+  static int GetInstance(DRMMaster **master);
+
+ private:
+  DRMMaster() {}
+  int Init();
+
+  int dev_fd_ = -1;              // Master fd for DRM
+  static DRMMaster *s_instance;  // Singleton instance
+  static std::mutex s_lock;
+};
+
+}  // namespace drm_utils
+
+#endif  // __DRM_MASTER_H__

libdrmutils/drm_res_mgr.cpp

@@ -0,0 +1,149 @@
+/*
+* Copyright (c) 2017, The Linux Foundation. All rights reserved.
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions are
+* met:
+*   * Redistributions of source code must retain the above copyright
+*     notice, this list of conditions and the following disclaimer.
+*   * Redistributions in binary form must reproduce the above
+*     copyright notice, this list of conditions and the following
+*     disclaimer in the documentation and/or other materials provided
+*     with the distribution.
+*   * Neither the name of The Linux Foundation nor the names of its
+*     contributors may be used to endorse or promote products derived
+*     from this software without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+* ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <errno.h>
+
+#include "drm_master.h"
+#include "drm_res_mgr.h"
+
+#define DEBUG 0
+#define __CLASS__ "DRMResMgr"
+
+using std::mutex;
+using std::lock_guard;
+
+namespace drm_utils {
+
+DRMResMgr *DRMResMgr::s_instance = nullptr;
+mutex DRMResMgr::s_lock;
+
+static bool GetConnector(int dev_fd, drmModeRes *res, drmModeConnector **connector) {
+  for (auto i = 0; i < res->count_connectors; i++) {
+    drmModeConnector *conn = drmModeGetConnector(dev_fd, res->connectors[i]);
+    if (conn && conn->connector_type == DRM_MODE_CONNECTOR_DSI && conn->count_modes &&
+        conn->connection == DRM_MODE_CONNECTED) {
+      *connector = conn;
+      DRM_LOGI("drm_utils::%s found connector %d", __FUNCTION__, conn->connector_id);
+      return true;
+    }
+  }
+
+  return false;
+}
+
+static bool GetEncoder(int dev_fd, drmModeConnector *conn, drmModeEncoder **encoder) {
+  for (auto i = 0; i < conn->count_encoders; i++) {
+    drmModeEncoder *enc = drmModeGetEncoder(dev_fd, conn->encoders[i]);
+    if (enc && enc->encoder_type == DRM_MODE_ENCODER_DSI) {
+      *encoder = enc;
+      DRM_LOGI("drm_utils::%s found encoder %d", __FUNCTION__, enc->encoder_id);
+      return true;
+    }
+  }
+  return false;
+}
+
+static bool GetCrtc(int dev_fd, drmModeRes *res, drmModeEncoder *enc, drmModeCrtc **crtc) {
+  for (auto i = 0; i < res->count_crtcs; i++) {
+    if (enc->possible_crtcs & (1 << i)) {
+      drmModeCrtc *c = drmModeGetCrtc(dev_fd, res->crtcs[i]);
+      if (c) {
+        *crtc = c;
+        DRM_LOGI("drm_utils::%s found crtc %d", __FUNCTION__, c->crtc_id);
+        return true;
+      }
+    }
+  }
+
+  return false;
+}
+
+int DRMResMgr::GetInstance(DRMResMgr **res_mgr) {
+  lock_guard<mutex> obj(s_lock);
+
+  if (!s_instance) {
+    s_instance = new DRMResMgr();
+    if (s_instance->Init() < 0) {
+      delete s_instance;
+      s_instance = nullptr;
+      return -ENODEV;
+    }
+  }
+
+  *res_mgr = s_instance;
+  return 0;
+}
+
+int DRMResMgr::Init() {
+  DRMMaster *master = nullptr;
+  int dev_fd = -1;
+
+  int ret = DRMMaster::GetInstance(&master);
+  if (ret < 0) {
+    return ret;
+  }
+
+  master->GetHandle(&dev_fd);
+  drmModeRes *res = drmModeGetResources(dev_fd);
+  if (res == nullptr) {
+    DRM_LOGE("%s::%s: drmModeGetResources failed", __CLASS__, __FUNCTION__);
+    return -ENODEV;
+  }
+
+  drmModeConnector *conn = nullptr;
+  if (!GetConnector(dev_fd, res, &conn)) {
+    DRM_LOGE("%s::%s: Failed to find a connector", __CLASS__, __FUNCTION__);
+    return -ENODEV;
+  }
+
+  drmModeEncoder *enc = nullptr;
+  if (!GetEncoder(dev_fd, conn, &enc)) {
+    DRM_LOGE("%s::%s: Failed to find an encoder", __CLASS__, __FUNCTION__);
+    drmModeFreeConnector(conn);
+    return -ENODEV;
+  }
+
+  drmModeCrtc *crtc = nullptr;
+  if (!GetCrtc(dev_fd, res, enc, &crtc)) {
+    DRM_LOGE("%s::%s: Failed to find a crtc", __CLASS__, __FUNCTION__);
+    drmModeFreeEncoder(enc);
+    drmModeFreeConnector(conn);
+    drmModeFreeResources(res);
+    return -ENODEV;
+  }
+
+  res_ = res;
+  conn_ = conn;
+  enc_ = enc;
+  crtc_ = crtc;
+
+  return 0;
+}
+
+}  // namespace drm_utils

libdrmutils/drm_res_mgr.h

@@ -0,0 +1,72 @@
+/*
+* Copyright (c) 2017, The Linux Foundation. All rights reserved.
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions are
+* met:
+*   * Redistributions of source code must retain the above copyright
+*     notice, this list of conditions and the following disclaimer.
+*   * Redistributions in binary form must reproduce the above
+*     copyright notice, this list of conditions and the following
+*     disclaimer in the documentation and/or other materials provided
+*     with the distribution.
+*   * Neither the name of The Linux Foundation nor the names of its
+*     contributors may be used to endorse or promote products derived
+*     from this software without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+* ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef __DRM_RES_MGR_H__
+#define __DRM_RES_MGR_H__
+
+#include <xf86drm.h>
+#include <xf86drmMode.h>
+
+#include <mutex>
+
+namespace drm_utils {
+
+class DRMResMgr {
+ public:
+  /* Returns the default connector id for primary panel */
+  void GetConnectorId(uint32_t *id) { *id = conn_->connector_id; }
+  /* Returns the default crtc id for primary pipeline */
+  void GetCrtcId(uint32_t *id) { *id = crtc_->crtc_id; }
+  /* Returns the default mode currently used by the connector */
+  void GetMode(drmModeModeInfo *mode) { *mode = conn_->modes[0]; }
+  /* Returns the panel dimensions in mm */
+  void GetDisplayDimInMM(uint32_t *w, uint32_t *h) {
+    *w = conn_->mmWidth;
+    *h = conn_->mmHeight;
+  }
+
+  /* Creates and initializes an instance of DRMResMgr. On success, returns a pointer to it, on
+   * failure returns -ENODEV */
+  static int GetInstance(DRMResMgr **res_mgr);
+
+ private:
+  int Init();
+
+  drmModeRes *res_ = nullptr;
+  drmModeConnector *conn_ = nullptr;
+  drmModeEncoder *enc_ = nullptr;
+  drmModeCrtc *crtc_ = nullptr;
+
+  static DRMResMgr *s_instance;
+  static std::mutex s_lock;
+};
+
+}  // namespace drm_utils
+
+#endif  // __DRM_RES_MGR_H__

libgralloc/Android.mk

@@ -23,7 +23,7 @@ LOCAL_MODULE_TAGS             := optional
 LOCAL_C_INCLUDES              := $(common_includes) $(kernel_includes)
 LOCAL_SHARED_LIBRARIES        := $(common_libs) libmemalloc libqdMetaData libqdutils
 ifneq ($(TARGET_IS_HEADLESS), true)
-LOCAL_SHARED_LIBRARIES        += libGLESv1_CM
+LOCAL_SHARED_LIBRARIES        += libGLESv1_CM libdrmutils
 endif
 LOCAL_CFLAGS                  := $(common_flags) -DLOG_TAG=\"qdgralloc\" -Wno-sign-conversion
 LOCAL_ADDITIONAL_DEPENDENCIES := $(common_deps) $(kernel_deps)

libgralloc/gpu.cpp

@@ -20,16 +20,216 @@
 #include <fcntl.h>
 #include <cutils/properties.h>
 #include <sys/mman.h>
+#include <linux/msm_ion.h>
+#ifdef COMPILE_DRM
+#include <drm/drm_fourcc.h>
+#include <drm_master.h>
+#endif
+#include <qdMetaData.h>
+#include <qd_utils.h>
+
+#include <algorithm>
 
 #include "gr.h"
 #include "gpu.h"
 #include "memalloc.h"
 #include "alloc_controller.h"
-#include <qdMetaData.h>
+
-#include <linux/msm_ion.h>
+#ifdef COMPILE_DRM
+#ifndef DRM_FORMAT_MOD_QCOM_COMPRESSED
+#define DRM_FORMAT_MOD_QCOM_COMPRESSED fourcc_mod_code(QCOM, 1)
+#endif
+#endif
 
 using namespace gralloc;
 
+#ifdef COMPILE_DRM
+using namespace drm_utils;
+
+static int getPlaneStrideOffset(private_handle_t *hnd, uint32_t *stride,
+        uint32_t *offset, uint32_t *num_planes) {
+    struct android_ycbcr yuvInfo = {};
+    *num_planes = 1;
+
+    switch (hnd->format) {
+        case HAL_PIXEL_FORMAT_RGB_565:
+        case HAL_PIXEL_FORMAT_BGR_565:
+        case HAL_PIXEL_FORMAT_RGBA_5551:
+        case HAL_PIXEL_FORMAT_RGBA_4444:
+            stride[0] = hnd->width * 2;
+            break;
+        case HAL_PIXEL_FORMAT_RGB_888:
+            stride[0] = hnd->width * 3;
+            break;
+        case HAL_PIXEL_FORMAT_RGBA_8888:
+        case HAL_PIXEL_FORMAT_BGRA_8888:
+        case HAL_PIXEL_FORMAT_RGBX_8888:
+        case HAL_PIXEL_FORMAT_BGRX_8888:
+        case HAL_PIXEL_FORMAT_RGBA_1010102:
+        case HAL_PIXEL_FORMAT_ARGB_2101010:
+        case HAL_PIXEL_FORMAT_RGBX_1010102:
+        case HAL_PIXEL_FORMAT_XRGB_2101010:
+        case HAL_PIXEL_FORMAT_BGRA_1010102:
+        case HAL_PIXEL_FORMAT_ABGR_2101010:
+        case HAL_PIXEL_FORMAT_BGRX_1010102:
+        case HAL_PIXEL_FORMAT_XBGR_2101010:
+            stride[0] = hnd->width * 4;
+            break;
+    }
+
+    // Format is RGB
+    if (stride[0]) {
+        return 0;
+    }
+
+    (*num_planes)++;
+    int ret = getYUVPlaneInfo(hnd, &yuvInfo);
+    if (ret < 0) {
+        ALOGE("%s failed", __FUNCTION__);
+        return ret;
+    }
+
+    stride[0] = static_cast<uint32_t>(yuvInfo.ystride);
+    offset[0] = static_cast<uint32_t>(
+                    reinterpret_cast<uint64_t>(yuvInfo.y) - hnd->base);
+    stride[1] = static_cast<uint32_t>(yuvInfo.cstride);
+    switch (hnd->format) {
+        case HAL_PIXEL_FORMAT_YCbCr_420_SP:
+        case HAL_PIXEL_FORMAT_YCbCr_422_SP:
+        case HAL_PIXEL_FORMAT_YCbCr_420_SP_VENUS:
+        case HAL_PIXEL_FORMAT_NV12_ENCODEABLE:
+        case HAL_PIXEL_FORMAT_YCbCr_420_SP_VENUS_UBWC:
+        case HAL_PIXEL_FORMAT_YCbCr_420_P010:
+        case HAL_PIXEL_FORMAT_YCbCr_420_TP10_UBWC:
+            offset[1] = static_cast<uint32_t>(
+                    reinterpret_cast<uint64_t>(yuvInfo.cb) - hnd->base);
+            break;
+        case HAL_PIXEL_FORMAT_YCrCb_420_SP:
+        case HAL_PIXEL_FORMAT_YCrCb_420_SP_VENUS:
+        case HAL_PIXEL_FORMAT_YCrCb_422_SP:
+            offset[1] = static_cast<uint32_t>(
+                    reinterpret_cast<uint64_t>(yuvInfo.cr) - hnd->base);
+            break;
+        case HAL_PIXEL_FORMAT_YV12:
+            offset[1] = static_cast<uint32_t>(
+                    reinterpret_cast<uint64_t>(yuvInfo.cr) - hnd->base);
+            stride[2] = static_cast<uint32_t>(yuvInfo.cstride);
+            offset[2] = static_cast<uint32_t>(
+                    reinterpret_cast<uint64_t>(yuvInfo.cb) - hnd->base);
+            (*num_planes)++;
+            break;
+        default:
+            ALOGW("%s: Unsupported format %s", __FUNCTION__,
+                    qdutils::GetHALPixelFormatString(hnd->format));
+    }
+
+    if (hnd->flags & private_handle_t::PRIV_FLAGS_UBWC_ALIGNED) {
+        std::fill(offset, offset + 4, 0);
+    }
+
+    return 0;
+}
+
+static void getDRMFormat(int hal_format, int flags, uint32_t *drm_format,
+        uint64_t *drm_format_modifier) {
+
+    if (flags & private_handle_t::PRIV_FLAGS_UBWC_ALIGNED) {
+        *drm_format_modifier = DRM_FORMAT_MOD_QCOM_COMPRESSED;
+    }
+
+    switch (hal_format) {
+        case HAL_PIXEL_FORMAT_RGBA_8888:
+            *drm_format = DRM_FORMAT_RGBA8888;
+            break;
+        case HAL_PIXEL_FORMAT_RGBA_5551:
+            *drm_format = DRM_FORMAT_RGBA5551;
+            break;
+        case HAL_PIXEL_FORMAT_RGBA_4444:
+            *drm_format = DRM_FORMAT_RGBA4444;
+            break;
+        case HAL_PIXEL_FORMAT_BGRA_8888:
+            *drm_format = DRM_FORMAT_BGRA8888;
+            break;
+        case HAL_PIXEL_FORMAT_RGBX_8888:
+            *drm_format = DRM_FORMAT_RGBX8888;
+            break;
+        case HAL_PIXEL_FORMAT_BGRX_8888:
+            *drm_format = DRM_FORMAT_BGRX8888;
+            break;
+        case HAL_PIXEL_FORMAT_RGB_888:
+            *drm_format = DRM_FORMAT_RGB888;
+            break;
+        case HAL_PIXEL_FORMAT_RGB_565:
+            *drm_format = DRM_FORMAT_RGB565;
+            break;
+        case HAL_PIXEL_FORMAT_BGR_565:
+            *drm_format = DRM_FORMAT_BGR565;
+            break;
+        case HAL_PIXEL_FORMAT_RGBA_1010102:
+            *drm_format = DRM_FORMAT_RGBA1010102;
+            break;
+        case HAL_PIXEL_FORMAT_ARGB_2101010:
+            *drm_format = DRM_FORMAT_ARGB2101010;
+            break;
+        case HAL_PIXEL_FORMAT_RGBX_1010102:
+            *drm_format = DRM_FORMAT_RGBX1010102;
+            break;
+        case HAL_PIXEL_FORMAT_XRGB_2101010:
+            *drm_format = DRM_FORMAT_XRGB2101010;
+            break;
+        case HAL_PIXEL_FORMAT_BGRA_1010102:
+            *drm_format = DRM_FORMAT_BGRA1010102;
+            break;
+        case HAL_PIXEL_FORMAT_ABGR_2101010:
+            *drm_format = DRM_FORMAT_ABGR2101010;
+            break;
+        case HAL_PIXEL_FORMAT_BGRX_1010102:
+            *drm_format = DRM_FORMAT_BGRX1010102;
+            break;
+        case HAL_PIXEL_FORMAT_XBGR_2101010:
+            *drm_format = DRM_FORMAT_XBGR2101010;
+            break;
+        case HAL_PIXEL_FORMAT_YCbCr_420_SP:
+            *drm_format = DRM_FORMAT_NV12;
+            break;
+        case HAL_PIXEL_FORMAT_NV12_ENCODEABLE:
+        case HAL_PIXEL_FORMAT_YCbCr_420_SP_VENUS:
+            *drm_format = DRM_FORMAT_NV12;
+            break;
+        case HAL_PIXEL_FORMAT_YCbCr_420_SP_VENUS_UBWC:
+            *drm_format = DRM_FORMAT_NV12;
+            *drm_format_modifier = DRM_FORMAT_MOD_QCOM_COMPRESSED;
+            break;
+        case HAL_PIXEL_FORMAT_YCrCb_420_SP:
+            *drm_format = DRM_FORMAT_NV21;
+            break;
+        case HAL_PIXEL_FORMAT_YCrCb_420_SP_VENUS:
+            *drm_format = DRM_FORMAT_NV21;
+            break;
+        case HAL_PIXEL_FORMAT_YCbCr_420_P010:
+            // TODO *drm_format = DRM_FORMAT_P010;
+            break;
+        case HAL_PIXEL_FORMAT_YCbCr_420_TP10_UBWC:
+            // TODO *drm_format = DRM_FORMAT_P010;
+            // *drm_format_modifier = DRM_FORMAT_MOD_QCOM_COMPRESSED |
+            //        DRM_FORMAT_MOD_QCOM_TIGHT;
+            break;
+        case HAL_PIXEL_FORMAT_YCbCr_422_SP:
+            *drm_format = DRM_FORMAT_NV16;
+            break;
+        case HAL_PIXEL_FORMAT_YCrCb_422_SP:
+            *drm_format = DRM_FORMAT_NV61;
+            break;
+        case HAL_PIXEL_FORMAT_YV12:
+            *drm_format = DRM_FORMAT_YVU420;
+            break;
+        default:
+            ALOGW("%s: Unsupported format %s", __FUNCTION__,
+                    qdutils::GetHALPixelFormatString(hal_format));
+    }
+}
+#endif
+
 gpu_context_t::gpu_context_t(const private_module_t* module,
                              IAllocController* alloc_ctrl ) :
     mAllocCtrl(alloc_ctrl)
@@ -169,11 +369,46 @@ int gpu_context_t::gralloc_alloc_buffer(unsigned int size, int usage,
         ColorSpace_t colorSpace = ITU_R_601;
         setMetaData(hnd, UPDATE_COLOR_SPACE, (void*) &colorSpace);
 
+#ifdef COMPILE_DRM
+        if (qdutils::getDriverType() == qdutils::DriverType::DRM &&
+                usage & GRALLOC_USAGE_HW_COMPOSER) {
+            DRMBuffer buf = {};
+            int ret = getPlaneStrideOffset(hnd, buf.stride, buf.offset,
+                    &buf.num_planes);
+            if (ret < 0) {
+                ALOGE("%s failed", __FUNCTION__);
+                return ret;
+            }
+
+            buf.fd = hnd->fd;
+            buf.width = hnd->width;
+            buf.height = hnd->height;
+            getDRMFormat(hnd->format, flags, &buf.drm_format,
+                    &buf.drm_format_modifier);
+
+            DRMMaster *master = nullptr;
+            ret = DRMMaster::GetInstance(&master);
+            if (ret < 0) {
+                ALOGE("%s Failed to acquire DRMMaster instance", __FUNCTION__);
+                return ret;
+            }
+
+            ret = master->CreateFbId(buf, &hnd->gem_handle, &hnd->fb_id);
+            if (ret < 0) {
+                ALOGE("%s: CreateFbId failed. width %d, height %d, " \
+                        "format: %s, stride %u, error %d", __FUNCTION__,
+                        buf.width, buf.height,
+                        qdutils::GetHALPixelFormatString(hnd->format),
+                        buf.stride[0], errno);
+                return ret;
+            }
+        }
+#endif
+
         *pHandle = hnd;
     }
 
     ALOGE_IF(err, "gralloc failed err=%s", strerror(-err));
-
     return err;
 }
 
@@ -369,6 +604,23 @@ int gpu_context_t::free_impl(private_handle_t const* hnd) {
         if (err)
             return err;
     }
+
+#ifdef COMPILE_DRM
+    if (hnd->fb_id) {
+        DRMMaster *master = nullptr;
+        int ret = DRMMaster::GetInstance(&master);
+        if (ret < 0) {
+            ALOGE("%s Failed to acquire DRMMaster instance", __FUNCTION__);
+            return ret;
+        }
+        ret = master->RemoveFbId(hnd->gem_handle, hnd->fb_id);
+        if (ret < 0) {
+            ALOGE("%s: Removing fb_id %d failed with error %d", __FUNCTION__,
+                    hnd->fb_id, errno);
+        }
+    }
+#endif
+
     delete hnd;
     return 0;
 }

libgralloc/gralloc_priv.h

@@ -1,6 +1,6 @@
 /*
  * Copyright (C) 2008 The Android Open Source Project
- * Copyright (c) 2011 - 2016, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2011 - 2017, The Linux Foundation. All rights reserved.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -247,6 +247,8 @@ struct private_handle_t : public native_handle {
         uint64_t base_metadata __attribute__((aligned(8)));
         int unaligned_width;   // holds width client asked to allocate
         int unaligned_height;  // holds height client asked to allocate
+        unsigned int gem_handle;
+        unsigned int fb_id;
 
 #ifdef __cplusplus
         static const int sNumFds = 2;
@@ -263,7 +265,7 @@ struct private_handle_t : public native_handle {
             base(0), offset_metadata(0), gpuaddr(0),
             format(format), width(width), height(height),
             base_metadata(0), unaligned_width(width),
-            unaligned_height(height)
+            unaligned_height(height), gem_handle(0), fb_id(0)
         {
             version = (int) sizeof(native_handle);
             numInts = sNumInts();

libgralloc1/Android.mk

@@ -10,6 +10,9 @@ LOCAL_C_INCLUDES              := $(common_includes) \
                                  external/libcxx/include/
 
 LOCAL_SHARED_LIBRARIES        := $(common_libs) libqdMetaData libsync libqdutils
+ifneq ($(TARGET_IS_HEADLESS), true)
+LOCAL_SHARED_LIBRARIES        += libdrmutils
+endif
 LOCAL_CFLAGS                  := $(common_flags) -DLOG_TAG=\"qdgralloc\" -Wall -std=c++11 -Werror
 LOCAL_CFLAGS                  += -isystem  $(kernel_includes)
 LOCAL_CLANG                   := true

libgralloc1/gr_buf_mgr.cpp

@@ -17,6 +17,9 @@
  * limitations under the License.
  */
 
+#include <drm/drm_fourcc.h>
+#include <drm_master.h>
+
 #include <utility>
 
 #include "qd_utils.h"
@@ -28,6 +31,192 @@
 
 namespace gralloc1 {
 
+using namespace drm_utils;
+
+static int getPlaneStrideOffset(private_handle_t *hnd, uint32_t *stride,
+        uint32_t *offset, uint32_t *num_planes) {
+    struct android_ycbcr yuvInfo = {};
+    *num_planes = 1;
+
+    switch (hnd->format) {
+        case HAL_PIXEL_FORMAT_RGB_565:
+        case HAL_PIXEL_FORMAT_BGR_565:
+        case HAL_PIXEL_FORMAT_RGBA_5551:
+        case HAL_PIXEL_FORMAT_RGBA_4444:
+            stride[0] = hnd->width * 2;
+            break;
+        case HAL_PIXEL_FORMAT_RGB_888:
+            stride[0] = hnd->width * 3;
+            break;
+        case HAL_PIXEL_FORMAT_RGBA_8888:
+        case HAL_PIXEL_FORMAT_BGRA_8888:
+        case HAL_PIXEL_FORMAT_RGBX_8888:
+        case HAL_PIXEL_FORMAT_BGRX_8888:
+        case HAL_PIXEL_FORMAT_RGBA_1010102:
+        case HAL_PIXEL_FORMAT_ARGB_2101010:
+        case HAL_PIXEL_FORMAT_RGBX_1010102:
+        case HAL_PIXEL_FORMAT_XRGB_2101010:
+        case HAL_PIXEL_FORMAT_BGRA_1010102:
+        case HAL_PIXEL_FORMAT_ABGR_2101010:
+        case HAL_PIXEL_FORMAT_BGRX_1010102:
+        case HAL_PIXEL_FORMAT_XBGR_2101010:
+            stride[0] = hnd->width * 4;
+            break;
+    }
+
+    // Format is RGB
+    if (stride[0]) {
+        return 0;
+    }
+
+    (*num_planes)++;
+    int ret = getYUVPlaneInfo(hnd, &yuvInfo);
+    if (ret < 0) {
+        ALOGE("%s failed", __FUNCTION__);
+        return ret;
+    }
+
+    stride[0] = static_cast<uint32_t>(yuvInfo.ystride);
+    offset[0] = static_cast<uint32_t>(
+                    reinterpret_cast<uint64_t>(yuvInfo.y) - hnd->base);
+    stride[1] = static_cast<uint32_t>(yuvInfo.cstride);
+    switch (hnd->format) {
+        case HAL_PIXEL_FORMAT_YCbCr_420_SP:
+        case HAL_PIXEL_FORMAT_YCbCr_422_SP:
+        case HAL_PIXEL_FORMAT_YCbCr_420_SP_VENUS:
+        case HAL_PIXEL_FORMAT_NV12_ENCODEABLE:
+        case HAL_PIXEL_FORMAT_YCbCr_420_SP_VENUS_UBWC:
+        case HAL_PIXEL_FORMAT_YCbCr_420_P010:
+        case HAL_PIXEL_FORMAT_YCbCr_420_TP10_UBWC:
+            offset[1] = static_cast<uint32_t>(
+                    reinterpret_cast<uint64_t>(yuvInfo.cb) - hnd->base);
+            break;
+        case HAL_PIXEL_FORMAT_YCrCb_420_SP:
+        case HAL_PIXEL_FORMAT_YCrCb_420_SP_VENUS:
+        case HAL_PIXEL_FORMAT_YCrCb_422_SP:
+            offset[1] = static_cast<uint32_t>(
+                    reinterpret_cast<uint64_t>(yuvInfo.cr) - hnd->base);
+            break;
+        case HAL_PIXEL_FORMAT_YV12:
+            offset[1] = static_cast<uint32_t>(
+                    reinterpret_cast<uint64_t>(yuvInfo.cr) - hnd->base);
+            stride[2] = static_cast<uint32_t>(yuvInfo.cstride);
+            offset[2] = static_cast<uint32_t>(
+                    reinterpret_cast<uint64_t>(yuvInfo.cb) - hnd->base);
+            (*num_planes)++;
+            break;
+        default:
+            ALOGW("%s: Unsupported format %s", __FUNCTION__,
+                    qdutils::GetHALPixelFormatString(hnd->format));
+    }
+
+    if (hnd->flags & private_handle_t::PRIV_FLAGS_UBWC_ALIGNED) {
+        std::fill(offset, offset + 4, 0);
+    }
+
+    return 0;
+}
+
+static void getDRMFormat(int hal_format, int flags, uint32_t *drm_format,
+        uint64_t *drm_format_modifier) {
+
+    if (flags & private_handle_t::PRIV_FLAGS_UBWC_ALIGNED) {
+        *drm_format_modifier = DRM_FORMAT_MOD_QCOM_COMPRESSED;
+    }
+
+    switch (hal_format) {
+        case HAL_PIXEL_FORMAT_RGBA_8888:
+            *drm_format = DRM_FORMAT_RGBA8888;
+            break;
+        case HAL_PIXEL_FORMAT_RGBA_5551:
+            *drm_format = DRM_FORMAT_RGBA5551;
+            break;
+        case HAL_PIXEL_FORMAT_RGBA_4444:
+            *drm_format = DRM_FORMAT_RGBA4444;
+            break;
+        case HAL_PIXEL_FORMAT_BGRA_8888:
+            *drm_format = DRM_FORMAT_BGRA8888;
+            break;
+        case HAL_PIXEL_FORMAT_RGBX_8888:
+            *drm_format = DRM_FORMAT_RGBX8888;
+            break;
+        case HAL_PIXEL_FORMAT_BGRX_8888:
+            *drm_format = DRM_FORMAT_BGRX8888;
+            break;
+        case HAL_PIXEL_FORMAT_RGB_888:
+            *drm_format = DRM_FORMAT_RGB888;
+            break;
+        case HAL_PIXEL_FORMAT_RGB_565:
+            *drm_format = DRM_FORMAT_RGB565;
+            break;
+        case HAL_PIXEL_FORMAT_BGR_565:
+            *drm_format = DRM_FORMAT_BGR565;
+            break;
+        case HAL_PIXEL_FORMAT_RGBA_1010102:
+            *drm_format = DRM_FORMAT_RGBA1010102;
+            break;
+        case HAL_PIXEL_FORMAT_ARGB_2101010:
+            *drm_format = DRM_FORMAT_ARGB2101010;
+            break;
+        case HAL_PIXEL_FORMAT_RGBX_1010102:
+            *drm_format = DRM_FORMAT_RGBX1010102;
+            break;
+        case HAL_PIXEL_FORMAT_XRGB_2101010:
+            *drm_format = DRM_FORMAT_XRGB2101010;
+            break;
+        case HAL_PIXEL_FORMAT_BGRA_1010102:
+            *drm_format = DRM_FORMAT_BGRA1010102;
+            break;
+        case HAL_PIXEL_FORMAT_ABGR_2101010:
+            *drm_format = DRM_FORMAT_ABGR2101010;
+            break;
+        case HAL_PIXEL_FORMAT_BGRX_1010102:
+            *drm_format = DRM_FORMAT_BGRX1010102;
+            break;
+        case HAL_PIXEL_FORMAT_XBGR_2101010:
+            *drm_format = DRM_FORMAT_XBGR2101010;
+            break;
+        case HAL_PIXEL_FORMAT_YCbCr_420_SP:
+            *drm_format = DRM_FORMAT_NV12;
+            break;
+        case HAL_PIXEL_FORMAT_NV12_ENCODEABLE:
+        case HAL_PIXEL_FORMAT_YCbCr_420_SP_VENUS:
+            *drm_format = DRM_FORMAT_NV12;
+            break;
+        case HAL_PIXEL_FORMAT_YCbCr_420_SP_VENUS_UBWC:
+            *drm_format = DRM_FORMAT_NV12;
+            *drm_format_modifier = DRM_FORMAT_MOD_QCOM_COMPRESSED;
+            break;
+        case HAL_PIXEL_FORMAT_YCrCb_420_SP:
+            *drm_format = DRM_FORMAT_NV21;
+            break;
+        case HAL_PIXEL_FORMAT_YCrCb_420_SP_VENUS:
+            *drm_format = DRM_FORMAT_NV21;
+            break;
+        case HAL_PIXEL_FORMAT_YCbCr_420_P010:
+            // TODO *drm_format = DRM_FORMAT_P010;
+            break;
+        case HAL_PIXEL_FORMAT_YCbCr_420_TP10_UBWC:
+            // TODO *drm_format = DRM_FORMAT_P010;
+            // *drm_format_modifier = DRM_FORMAT_MOD_QCOM_COMPRESSED |
+            //        DRM_FORMAT_MOD_QCOM_TIGHT;
+            break;
+        case HAL_PIXEL_FORMAT_YCbCr_422_SP:
+            *drm_format = DRM_FORMAT_NV16;
+            break;
+        case HAL_PIXEL_FORMAT_YCrCb_422_SP:
+            *drm_format = DRM_FORMAT_NV61;
+            break;
+        case HAL_PIXEL_FORMAT_YV12:
+            *drm_format = DRM_FORMAT_YVU420;
+            break;
+        default:
+            ALOGW("%s: Unsupported format %s", __FUNCTION__,
+                    qdutils::GetHALPixelFormatString(hal_format));
+
+    }
+}
+
 BufferManager::BufferManager() {
   char property[PROPERTY_VALUE_MAX];
 
@@ -139,6 +328,8 @@ void BufferManager::CreateSharedHandle(buffer_handle_t inbuffer, const BufferDes
       descriptor.GetWidth(), descriptor.GetHeight(), descriptor.GetProducerUsage(),
       descriptor.GetConsumerUsage());
 
+  // TODO(user): Not sure what to do for fb_id. Use duped fd and new dimensions?
+
   *outbuffer = out_hnd;
 }
 
@@ -156,6 +347,19 @@ gralloc1_error_t BufferManager::FreeBuffer(private_handle_t const *hnd) {
 
   // delete handle also
   private_handle_t *handle = const_cast<private_handle_t *>(hnd);
+  if (handle->fb_id) {
+      int ret = DRMMaster::GetInstance(&master);
+      if (ret < 0) {
+          ALOGE("%s Failed to acquire DRMMaster instance", __FUNCTION__);
+          return ret;
+      }
+      ret = master->RemoveFbId(hnd->gem_handle, hnd->fb_id);
+      if (ret < 0) {
+          ALOGE("%s: Removing fb_id %d failed with error %d", __FUNCTION__,
+                  hnd->fb_id, errno);
+      }
+  }
+
   delete handle;
 
   return GRALLOC1_ERROR_NONE;
@@ -409,6 +613,39 @@ int BufferManager::AllocateBuffer(unsigned int size, int aligned_w, int aligned_
   hnd->gpuaddr = 0;
 
   setMetaData(hnd, UPDATE_COLOR_SPACE, reinterpret_cast<void *>(&colorSpace));
+  if (qdutils::getDriverType() == qdutils::DriverType::DRM &&
+          cons_usage & GRALLOC_USAGE_HW_COMPOSER) {
+      DRMBuffer buf = {};
+      int ret = getPlaneStrideOffset(hnd, buf.stride, buf.offset,
+              &buf.num_planes);
+      if (ret < 0) {
+          ALOGE("%s failed", __FUNCTION__);
+          return ret;
+      }
+
+      buf.fd = hnd->fd;
+      buf.width = hnd->width;
+      buf.height = hnd->height;
+      getDRMFormat(hnd->format, flags, &buf.drm_format,
+              &buf.drm_format_modifier);
+
+      DRMMaster *master = nullptr;
+      ret = DRMMaster::GetInstance(&master);
+      if (ret < 0) {
+          ALOGE("%s Failed to acquire DRMMaster instance", __FUNCTION__);
+          return ret;
+      }
+
+      ret = master->CreateFbId(buf, &hnd->gem_handle, &hnd->fb_id);
+      if (ret < 0) {
+          ALOGE("%s: CreateFbId failed. width %d, height %d, " \
+                  "format: %s, stride %u, error %d", __FUNCTION__,
+                  buf.width, buf.height,
+                  qdutils::GetHALPixelFormatString(hnd->format),
+                  buf.stride[0], errno);
+          return ret;
+      }
+  }
 
   *handle = hnd;
 

libgralloc1/gr_priv_handle.h

@@ -84,6 +84,7 @@ struct private_handle_t : public native_handle_t {
 
   int stride;
   uint64_t base_metadata __attribute__((aligned(8)));
+  unsigned int fb_id;
 
   // added for gralloc1
   int unaligned_width;   // holds width client asked to allocate
@@ -117,7 +118,8 @@ struct private_handle_t : public native_handle_t {
         unaligned_width(width),
         unaligned_height(height),
         producer_usage(GRALLOC1_PRODUCER_USAGE_NONE),
-        consumer_usage(GRALLOC1_CONSUMER_USAGE_NONE) {
+        consumer_usage(GRALLOC1_CONSUMER_USAGE_NONE),
+        fb_id(0) {
     version = static_cast<int>(sizeof(native_handle));
     numInts = NumInts();
     numFds = kNumFds;

libqdutils/qd_utils.cpp

@@ -28,6 +28,7 @@
  */
 
 #include <unistd.h>
+#include <gralloc_priv.h>
 #include "qd_utils.h"
 
 namespace qdutils {
@@ -281,4 +282,79 @@ DriverType getDriverType() {
     return access(fb_caps, F_OK) ? DriverType::DRM : DriverType::FB;
 }
 
+const char *GetHALPixelFormatString(int format) {
+  switch (format) {
+  case HAL_PIXEL_FORMAT_RGBA_8888:
+    return "RGBA_8888";
+  case HAL_PIXEL_FORMAT_RGBX_8888:
+    return "RGBX_8888";
+  case HAL_PIXEL_FORMAT_RGB_888:
+    return "RGB_888";
+  case HAL_PIXEL_FORMAT_RGB_565:
+    return "RGB_565";
+  case HAL_PIXEL_FORMAT_BGR_565:
+    return "BGR_565";
+  case HAL_PIXEL_FORMAT_BGRA_8888:
+    return "BGRA_8888";
+  case HAL_PIXEL_FORMAT_RGBA_5551:
+    return "RGBA_5551";
+  case HAL_PIXEL_FORMAT_RGBA_4444:
+    return "RGBA_4444";
+  case HAL_PIXEL_FORMAT_YV12:
+    return "YV12";
+  case HAL_PIXEL_FORMAT_YCbCr_422_SP:
+    return "YCbCr_422_SP_NV16";
+  case HAL_PIXEL_FORMAT_YCrCb_420_SP:
+    return "YCrCb_420_SP_NV21";
+  case HAL_PIXEL_FORMAT_YCbCr_422_I:
+    return "YCbCr_422_I_YUY2";
+  case HAL_PIXEL_FORMAT_YCrCb_422_I:
+    return "YCrCb_422_I_YVYU";
+  case HAL_PIXEL_FORMAT_NV12_ENCODEABLE:
+    return "NV12_ENCODEABLE";
+  case HAL_PIXEL_FORMAT_YCbCr_420_SP_TILED:
+    return "YCbCr_420_SP_TILED_TILE_4x2";
+  case HAL_PIXEL_FORMAT_YCbCr_420_SP:
+    return "YCbCr_420_SP";
+  case HAL_PIXEL_FORMAT_YCrCb_420_SP_ADRENO:
+    return "YCrCb_420_SP_ADRENO";
+  case HAL_PIXEL_FORMAT_YCrCb_422_SP:
+    return "YCrCb_422_SP";
+  case HAL_PIXEL_FORMAT_R_8:
+    return "R_8";
+  case HAL_PIXEL_FORMAT_RG_88:
+    return "RG_88";
+  case HAL_PIXEL_FORMAT_INTERLACE:
+    return "INTERLACE";
+  case HAL_PIXEL_FORMAT_YCbCr_420_SP_VENUS:
+    return "YCbCr_420_SP_VENUS";
+  case HAL_PIXEL_FORMAT_YCrCb_420_SP_VENUS:
+    return "YCrCb_420_SP_VENUS";
+  case HAL_PIXEL_FORMAT_YCbCr_420_SP_VENUS_UBWC:
+    return "YCbCr_420_SP_VENUS_UBWC";
+  case HAL_PIXEL_FORMAT_RGBA_1010102:
+    return "RGBA_1010102";
+  case HAL_PIXEL_FORMAT_ARGB_2101010:
+    return "ARGB_2101010";
+  case HAL_PIXEL_FORMAT_RGBX_1010102:
+    return "RGBX_1010102";
+  case HAL_PIXEL_FORMAT_XRGB_2101010:
+    return "XRGB_2101010";
+  case HAL_PIXEL_FORMAT_BGRA_1010102:
+    return "BGRA_1010102";
+  case HAL_PIXEL_FORMAT_ABGR_2101010:
+    return "ABGR_2101010";
+  case HAL_PIXEL_FORMAT_BGRX_1010102:
+    return "BGRX_1010102";
+  case HAL_PIXEL_FORMAT_XBGR_2101010:
+    return "XBGR_2101010";
+  case HAL_PIXEL_FORMAT_YCbCr_420_P010:
+    return "YCbCr_420_P010";
+  case HAL_PIXEL_FORMAT_YCbCr_420_TP10_UBWC:
+    return "YCbCr_420_TP10_UBWC";
+  default:
+    return "Unknown_format";
+  }
+}
+
 }; //namespace qdutils

libqdutils/qd_utils.h

@@ -69,6 +69,7 @@ enum class DriverType {
     DRM,
 };
 DriverType getDriverType();
+const char *GetHALPixelFormatString(int format);
 
 }; //namespace qdutils
 #endif

sdm/include/core/layer_buffer.h

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2014, 2016, The Linux Foundation. All rights reserved.
+* Copyright (c) 2014, 2016-2017, The Linux Foundation. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are permitted
 * provided that the following conditions are met:
@@ -266,6 +266,7 @@ struct LayerBuffer {
                                 //!< could be modified by both client and SDM.
   uint64_t buffer_id __attribute__((aligned(8))) = 0;
                                 //!< Specifies the buffer id.
+  uint32_t fb_id = 0;  // DRM f/w registered framebuffer id
 };
 
 // This enum represents buffer layout types.

sdm/include/private/hw_info_types.h

@@ -483,6 +483,7 @@ struct HWDisplayAttributes : DisplayConfigVariableInfo {
   uint32_t v_back_porch = 0;   //!< Vertical back porch of panel
   uint32_t v_pulse_width = 0;  //!< Vertical pulse width of panel
   uint32_t h_total = 0;        //!< Total width of panel (hActive + hFP + hBP + hPulseWidth)
+  uint32_t v_total = 0;        //!< Total height of panel (vActive + vFP + vBP + vPulseWidth)
   std::bitset<32> s3d_config;  //!< Stores the bit mask of S3D modes
 
   void Reset() { *this = HWDisplayAttributes(); }
@@ -498,6 +499,7 @@ struct HWDisplayAttributes : DisplayConfigVariableInfo {
             (v_front_porch != display_attributes.v_front_porch) ||
             (v_back_porch != display_attributes.v_back_porch) ||
             (v_pulse_width != display_attributes.v_pulse_width) ||
+            (h_total != display_attributes.h_total) ||
             (is_yuv != display_attributes.is_yuv));
   }
 

sdm/include/utils/utils.h

@@ -36,6 +36,13 @@ float gcd(float a, float b);
 float lcm(float a, float b);
 void CloseFd(int *fd);
 
+enum class DriverType {
+    FB = 0,
+    DRM,
+};
+
+DriverType GetDriverType();
+
 }  // namespace sdm
 
 #endif  // __UTILS_H__

sdm/libs/core/Android.mk

@@ -5,9 +5,17 @@ include $(LOCAL_PATH)/../../../common.mk
 LOCAL_MODULE                  := libsdmcore
 LOCAL_MODULE_TAGS             := optional
 LOCAL_C_INCLUDES              := $(common_includes) $(kernel_includes) $(common_header_export_path)
-LOCAL_CFLAGS                  := -Wno-unused-parameter -DLOG_TAG=\"SDM\" $(common_flags)
+LOCAL_CFLAGS                  := -Wno-unused-parameter -DLOG_TAG=\"SDM\" \
-LOCAL_HW_INTF_PATH            := fb
+                                 $(common_flags)
+LOCAL_HW_INTF_PATH_1          := fb
 LOCAL_SHARED_LIBRARIES        := libdl libsdmutils
+
+ifneq ($(TARGET_IS_HEADLESS), true)
+    LOCAL_CFLAGS              += -isystem external/libdrm
+    LOCAL_SHARED_LIBRARIES    += libdrm libdrmutils
+    LOCAL_HW_INTF_PATH_2      := drm
+endif
+
 LOCAL_ADDITIONAL_DEPENDENCIES := $(common_deps) $(kernel_deps)
 LOCAL_SRC_FILES               := core_interface.cpp \
                                  core_impl.cpp \
@@ -20,14 +28,23 @@ LOCAL_SRC_FILES               := core_interface.cpp \
                                  resource_default.cpp \
                                  dump_impl.cpp \
                                  color_manager.cpp \
-                                 $(LOCAL_HW_INTF_PATH)/hw_info.cpp \
+                                 hw_events_interface.cpp \
-                                 $(LOCAL_HW_INTF_PATH)/hw_device.cpp \
+                                 hw_info_interface.cpp \
-                                 $(LOCAL_HW_INTF_PATH)/hw_primary.cpp \
+                                 hw_interface.cpp \
-                                 $(LOCAL_HW_INTF_PATH)/hw_hdmi.cpp \
+                                 $(LOCAL_HW_INTF_PATH_1)/hw_info.cpp \
-                                 $(LOCAL_HW_INTF_PATH)/hw_virtual.cpp \
+                                 $(LOCAL_HW_INTF_PATH_1)/hw_device.cpp \
-                                 $(LOCAL_HW_INTF_PATH)/hw_color_manager.cpp \
+                                 $(LOCAL_HW_INTF_PATH_1)/hw_primary.cpp \
-                                 $(LOCAL_HW_INTF_PATH)/hw_scale.cpp \
+                                 $(LOCAL_HW_INTF_PATH_1)/hw_hdmi.cpp \
-                                 $(LOCAL_HW_INTF_PATH)/hw_events.cpp
+                                 $(LOCAL_HW_INTF_PATH_1)/hw_virtual.cpp \
+                                 $(LOCAL_HW_INTF_PATH_1)/hw_color_manager.cpp \
+                                 $(LOCAL_HW_INTF_PATH_1)/hw_scale.cpp \
+                                 $(LOCAL_HW_INTF_PATH_1)/hw_events.cpp
+
+ifneq ($(TARGET_IS_HEADLESS), true)
+    LOCAL_SRC_FILES           += $(LOCAL_HW_INTF_PATH_2)/hw_info_drm.cpp \
+                                 $(LOCAL_HW_INTF_PATH_2)/hw_device_drm.cpp \
+                                 $(LOCAL_HW_INTF_PATH_2)/hw_events_drm.cpp
+endif
 
 include $(BUILD_SHARED_LIBRARY)
 

sdm/libs/core/Makefile.am

@@ -11,6 +11,9 @@ c_sources = core_interface.cpp \
             resource_default.cpp \
             dump_impl.cpp \
             color_manager.cpp \
+            hw_interface.cpp \
+            hw_info_interface.cpp \
+            hw_events_interface.cpp \
             fb/hw_info.cpp \
             fb/hw_device.cpp \
             fb/hw_primary.cpp \

sdm/libs/core/display_base.cpp

@@ -1102,6 +1102,7 @@ void DisplayBase::CommitLayerParams(LayerStack *layer_stack) {
     hw_layer.input_buffer.planes[0].stride = sdm_layer->input_buffer.planes[0].stride;
     hw_layer.input_buffer.size = sdm_layer->input_buffer.size;
     hw_layer.input_buffer.acquire_fence_fd = sdm_layer->input_buffer.acquire_fence_fd;
+    hw_layer.input_buffer.fb_id = sdm_layer->input_buffer.fb_id;
   }
 
   return;

sdm/libs/core/display_hdmi.cpp

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2014 - 2016, The Linux Foundation. All rights reserved.
+* Copyright (c) 2014 - 2017, The Linux Foundation. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are permitted
 * provided that the following conditions are met:
@@ -86,7 +86,7 @@ DisplayError DisplayHDMI::Init() {
   s3d_format_to_mode_.insert(std::pair<LayerBufferS3DFormat, HWS3DMode>
                             (kS3dFormatFramePacking, kS3DModeFP));
 
-  error = HWEventsInterface::Create(INT(display_type_), this, &event_list_, &hw_events_intf_);
+  error = HWEventsInterface::Create(INT(display_type_), this, event_list_, &hw_events_intf_);
   if (error != kErrorNone) {
     DisplayBase::Deinit();
     HWInterface::Destroy(hw_intf_);

sdm/libs/core/display_hdmi.h

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2014 - 2016, The Linux Foundation. All rights reserved.
+* Copyright (c) 2014 - 2017, The Linux Foundation. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are permitted
 * provided that the following conditions are met:
@@ -30,6 +30,7 @@
 
 #include "display_base.h"
 #include "dump_impl.h"
+#include "hw_events_interface.h"
 
 namespace sdm {
 
@@ -61,11 +62,10 @@ class DisplayHDMI : public DisplayBase, HWEventHandler {
   bool underscan_supported_ = false;
   HWScanSupport scan_support_;
   std::map<LayerBufferS3DFormat, HWS3DMode> s3d_format_to_mode_;
-  std::vector<const char *> event_list_ = {"vsync_event", "idle_notify", "cec/rd_msg",
+  std::vector<HWEvent> event_list_ = { HWEvent::VSYNC, HWEvent::IDLE_NOTIFY, HWEvent::EXIT,
-                                           "thread_exit"};
+    HWEvent::CEC_READ_MESSAGE };
 };
 
 }  // namespace sdm
 
 #endif  // __DISPLAY_HDMI_H__
-

sdm/libs/core/display_primary.cpp

@@ -71,7 +71,7 @@ DisplayError DisplayPrimary::Init() {
 
   avr_prop_disabled_ = Debug::IsAVRDisabled();
 
-  error = HWEventsInterface::Create(INT(display_type_), this, &event_list_, &hw_events_intf_);
+  error = HWEventsInterface::Create(INT(display_type_), this, event_list_, &hw_events_intf_);
   if (error != kErrorNone) {
     DLOGE("Failed to create hardware events interface. Error = %d", error);
     DisplayBase::Deinit();

sdm/libs/core/display_primary.h

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2014 - 2016, The Linux Foundation. All rights reserved.
+* Copyright (c) 2014 - 2017, The Linux Foundation. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are permitted
 * provided that the following conditions are met:
@@ -29,6 +29,7 @@
 
 #include "display_base.h"
 #include "dump_impl.h"
+#include "hw_events_interface.h"
 
 namespace sdm {
 
@@ -62,8 +63,8 @@ class DisplayPrimary : public DisplayBase, HWEventHandler {
   bool NeedsAVREnable();
 
   uint32_t idle_timeout_ms_ = 0;
-  std::vector<const char *> event_list_ = {"vsync_event", "show_blank_event", "idle_notify",
+  std::vector<HWEvent> event_list_ = { HWEvent::VSYNC, HWEvent::EXIT, HWEvent::IDLE_NOTIFY,
-                                           "msm_fb_thermal_level", "thread_exit"};
+      HWEvent::SHOW_BLANK_EVENT, HWEvent::THERMAL_LEVEL };
   bool avr_prop_disabled_ = false;
   bool switch_to_cmd_ = false;
 };

sdm/libs/core/drm/hw_device_drm.cpp

@@ -0,0 +1,510 @@
+/*
+* Copyright (c) 2017, The Linux Foundation. All rights reserved.
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions are
+* met:
+*     * Redistributions of source code must retain the above copyright
+*       notice, this list of conditions and the following disclaimer.
+*     * Redistributions in binary form must reproduce the above
+*       copyright notice, this list of conditions and the following
+*       disclaimer in the documentation and/or other materials provided
+*       with the distribution.
+*     * Neither the name of The Linux Foundation nor the names of its
+*       contributors may be used to endorse or promote products derived
+*       from this software without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+* ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#define __STDC_FORMAT_MACROS
+
+#include <stdio.h>
+#include <ctype.h>
+#include <math.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <string.h>
+#include <inttypes.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <linux/fb.h>
+#include <utils/constants.h>
+#include <utils/debug.h>
+#include <utils/sys.h>
+#include <drm_master.h>
+#include <drm_res_mgr.h>
+
+#include <algorithm>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "hw_device_drm.h"
+#include "hw_info_interface.h"
+
+#define __CLASS__ "HWDeviceDRM"
+
+using std::string;
+using std::to_string;
+using std::fstream;
+using drm_utils::DRMMaster;
+using drm_utils::DRMResMgr;
+using drm_utils::DRMLogger;
+
+namespace sdm {
+
+class DRMLoggerDAL : public DRMLogger {
+ public:
+#define PRIV_LOG(suffix) { \
+  char buf[1024]; \
+  va_list list; \
+  va_start(list, str); \
+  vsnprintf(buf, sizeof(buf), str, list); \
+  va_end(list); \
+  DLOG##suffix("%s", buf); \
+}
+  void Error(const char *str, ...) {
+    PRIV_LOG(E);
+  }
+  void Info(const char *str, ...) {
+    PRIV_LOG(I);
+  }
+  void Debug(const char *str, ...) {
+    PRIV_LOG(D);
+  }
+};
+
+HWDeviceDRM::HWDeviceDRM(BufferSyncHandler *buffer_sync_handler, HWInfoInterface *hw_info_intf)
+  : hw_info_intf_(hw_info_intf), buffer_sync_handler_(buffer_sync_handler) {
+  DRMLogger::Set(new DRMLoggerDAL());
+}
+
+DisplayError HWDeviceDRM::Init() {
+  // Populate Panel Info (Used for Partial Update)
+  PopulateHWPanelInfo();
+  // Populate HW Capabilities
+  hw_resource_ = HWResourceInfo();
+  hw_info_intf_->GetHWResourceInfo(&hw_resource_);
+
+  DRMResMgr *res_mgr = nullptr;
+  int ret = DRMResMgr::GetInstance(&res_mgr);
+  if (ret < 0) {
+    DLOGE("Failed to acquire DRMResMgr instance");
+    return kErrorResources;
+  }
+
+  // TODO(user): check if default mode enabled
+  drmModeModeInfo mode;
+  res_mgr->GetMode(&mode);
+
+  uint32_t mm_width = 0;
+  uint32_t mm_height = 0;
+  res_mgr->GetDisplayDimInMM(&mm_width, &mm_height);
+
+  display_attributes_.x_pixels = mode.hdisplay;
+  display_attributes_.y_pixels = mode.vdisplay;
+  display_attributes_.fps = mode.vrefresh;
+  display_attributes_.vsync_period_ns = UINT32(1000000000L / display_attributes_.fps);
+
+  /*
+              Active                 Front           Sync           Back
+              Region                 Porch                          Porch
+     <-----------------------><----------------><-------------><-------------->
+     <----- [hv]display ----->
+     <------------- [hv]sync_start ------------>
+     <--------------------- [hv]sync_end --------------------->
+     <-------------------------------- [hv]total ----------------------------->
+   */
+
+  display_attributes_.v_front_porch = mode.vsync_start - mode.vdisplay;
+  display_attributes_.v_pulse_width = mode.vsync_end - mode.vsync_start;
+  display_attributes_.v_back_porch = mode.vtotal - mode.vsync_end;
+  display_attributes_.v_total = mode.vtotal;
+
+  display_attributes_.h_total = mode.htotal;
+  uint32_t h_blanking = mode.htotal - mode.hdisplay;
+  display_attributes_.is_device_split = true;
+  display_attributes_.h_total += display_attributes_.is_device_split ? h_blanking : 0;
+
+  display_attributes_.x_dpi =
+      (FLOAT(mode.hdisplay) * 25.4f) / FLOAT(mm_width);
+  display_attributes_.y_dpi =
+      (FLOAT(mode.vdisplay) * 25.4f) / FLOAT(mm_height);
+
+  return kErrorNone;
+}
+
+DisplayError HWDeviceDRM::Deinit() {
+  return kErrorNone;
+}
+
+DisplayError HWDeviceDRM::GetActiveConfig(uint32_t *active_config) {
+  *active_config = 0;
+  return kErrorNone;
+}
+
+DisplayError HWDeviceDRM::GetNumDisplayAttributes(uint32_t *count) {
+  *count = 1;
+  return kErrorNone;
+}
+
+DisplayError HWDeviceDRM::GetDisplayAttributes(uint32_t index,
+                                            HWDisplayAttributes *display_attributes) {
+  *display_attributes = display_attributes_;
+  return kErrorNone;
+}
+
+DisplayError HWDeviceDRM::GetHWPanelInfo(HWPanelInfo *panel_info) {
+  *panel_info = hw_panel_info_;
+  return kErrorNone;
+}
+
+DisplayError HWDeviceDRM::SetDisplayAttributes(uint32_t index) {
+  return kErrorNone;
+}
+
+DisplayError HWDeviceDRM::SetDisplayAttributes(const HWDisplayAttributes &display_attributes) {
+  return kErrorNotSupported;
+}
+
+DisplayError HWDeviceDRM::GetConfigIndex(uint32_t mode, uint32_t *index) {
+  return kErrorNone;
+}
+
+DisplayError HWDeviceDRM::PowerOn() {
+  DTRACE_SCOPED();
+  return kErrorNone;
+}
+
+DisplayError HWDeviceDRM::PowerOff() {
+  return kErrorNone;
+}
+
+DisplayError HWDeviceDRM::Doze() {
+  return kErrorNone;
+}
+
+DisplayError HWDeviceDRM::DozeSuspend() {
+  return kErrorNone;
+}
+
+DisplayError HWDeviceDRM::Standby() {
+  return kErrorNone;
+}
+
+DisplayError HWDeviceDRM::Validate(HWLayers *hw_layers) {
+  DTRACE_SCOPED();
+  return kErrorNone;
+}
+
+DisplayError HWDeviceDRM::Commit(HWLayers *hw_layers) {
+  DTRACE_SCOPED();
+
+  HWLayersInfo &hw_layer_info = hw_layers->info;
+  LayerStack *stack = hw_layer_info.stack;
+
+  stack->retire_fence_fd = -1;
+  for (Layer &layer : hw_layer_info.hw_layers) {
+    layer.input_buffer.release_fence_fd = -1;
+  }
+
+  DRMMaster *master = nullptr;
+  int ret = DRMMaster::GetInstance(&master);
+  if (ret < 0) {
+    DLOGE("Failed to acquire DRMMaster instance");
+    return kErrorResources;
+  }
+
+  DRMResMgr *res_mgr = nullptr;
+  ret = DRMResMgr::GetInstance(&res_mgr);
+  if (ret < 0) {
+    DLOGE("Failed to acquire DRMResMgr instance");
+    return kErrorResources;
+  }
+
+  int dev_fd = -1;
+  master->GetHandle(&dev_fd);
+
+  uint32_t connector_id = 0;
+  res_mgr->GetConnectorId(&connector_id);
+
+  uint32_t crtc_id = 0;
+  res_mgr->GetCrtcId(&crtc_id);
+
+  drmModeModeInfo mode;
+  res_mgr->GetMode(&mode);
+
+  LayerBuffer &input_buffer = hw_layer_info.hw_layers.at(0).input_buffer;
+  ret = drmModeSetCrtc(dev_fd, crtc_id, input_buffer.fb_id, 0 /* x */, 0 /* y */, &connector_id,
+                       1 /* num_connectors */, &mode);
+  if (ret < 0) {
+    DLOGE("drmModeSetCrtc failed dev fd %d, fb_id %d, crtc id %d, connector id %d, %s", dev_fd,
+          input_buffer.fb_id, crtc_id, connector_id, strerror(errno));
+    return kErrorHardware;
+  }
+
+  return kErrorNone;
+}
+
+DisplayError HWDeviceDRM::Flush() {
+  return kErrorNone;
+}
+
+void HWDeviceDRM::PopulateHWPanelInfo() {
+  hw_panel_info_ = HWPanelInfo();
+  GetHWPanelInfoByNode(0 /* Primary */, &hw_panel_info_);
+  DLOGI("Device type = %d, Display Port = %d, Display Mode = %d, Device Node = %d, Is Primary = %d",
+        device_type_, hw_panel_info_.port, hw_panel_info_.mode, 0 /* primary */,
+        hw_panel_info_.is_primary_panel);
+  DLOGI("Partial Update = %d, Dynamic FPS = %d",
+        hw_panel_info_.partial_update, hw_panel_info_.dynamic_fps);
+  DLOGI("Align: left = %d, width = %d, top = %d, height = %d",
+        hw_panel_info_.left_align, hw_panel_info_.width_align,
+        hw_panel_info_.top_align, hw_panel_info_.height_align);
+  DLOGI("ROI: min_width = %d, min_height = %d, need_merge = %d",
+        hw_panel_info_.min_roi_width, hw_panel_info_.min_roi_height,
+        hw_panel_info_.needs_roi_merge);
+  DLOGI("FPS: min = %d, max =%d", hw_panel_info_.min_fps, hw_panel_info_.max_fps);
+  DLOGI("Left Split = %d, Right Split = %d", hw_panel_info_.split_info.left_split,
+        hw_panel_info_.split_info.right_split);
+}
+
+void HWDeviceDRM::GetHWPanelNameByNode(int device_node, HWPanelInfo *panel_info) {
+  snprintf(panel_info->panel_name, sizeof(panel_info->panel_name), "%s",
+           "Dual SHARP video mode dsi panel");
+}
+
+void HWDeviceDRM::GetHWPanelInfoByNode(int device_node, HWPanelInfo *panel_info) {
+  panel_info->partial_update = 0;
+  panel_info->left_align = 0;
+  panel_info->width_align = 0;
+  panel_info->top_align = 0;
+  panel_info->height_align = 0;
+  panel_info->min_roi_width = 0;
+  panel_info->min_roi_height = 0;
+  panel_info->needs_roi_merge = 0;
+  panel_info->dynamic_fps = 0;
+  panel_info->min_fps = 60;
+  panel_info->max_fps = 60;
+  panel_info->is_primary_panel = 1;
+  panel_info->is_pluggable = 0;
+
+  GetHWDisplayPortAndMode(device_node, panel_info);
+  GetSplitInfo(device_node, panel_info);
+  GetHWPanelNameByNode(device_node, panel_info);
+  GetHWPanelMaxBrightnessFromNode(panel_info);
+}
+
+void HWDeviceDRM::GetHWDisplayPortAndMode(int device_node, HWPanelInfo *panel_info) {
+  DisplayPort *port = &panel_info->port;
+  HWDisplayMode *mode = &panel_info->mode;
+
+  *port = kPortDefault;
+  *mode = kModeDefault;
+
+  string line = "mipi dsi video panel";
+
+  if ((strncmp(line.c_str(), "mipi dsi cmd panel", strlen("mipi dsi cmd panel")) == 0)) {
+    *port = kPortDSI;
+    *mode = kModeCommand;
+  } else if ((strncmp(line.c_str(), "mipi dsi video panel", strlen("mipi dsi video panel")) == 0)) {
+    *port = kPortDSI;
+    *mode = kModeVideo;
+  } else if ((strncmp(line.c_str(), "lvds panel", strlen("lvds panel")) == 0)) {
+    *port = kPortLVDS;
+    *mode = kModeVideo;
+  } else if ((strncmp(line.c_str(), "edp panel", strlen("edp panel")) == 0)) {
+    *port = kPortEDP;
+    *mode = kModeVideo;
+  } else if ((strncmp(line.c_str(), "dtv panel", strlen("dtv panel")) == 0)) {
+    *port = kPortDTV;
+    *mode = kModeVideo;
+  } else if ((strncmp(line.c_str(), "writeback panel", strlen("writeback panel")) == 0)) {
+    *port = kPortWriteBack;
+    *mode = kModeCommand;
+  }
+
+  return;
+}
+
+void HWDeviceDRM::GetSplitInfo(int device_node, HWPanelInfo *panel_info) {
+  if (display_attributes_.is_device_split) {
+    panel_info->split_info.left_split = panel_info->split_info.right_split =
+      display_attributes_.x_pixels / 2;
+  }
+}
+
+void HWDeviceDRM::GetHWPanelMaxBrightnessFromNode(HWPanelInfo *panel_info) {
+  char brightness[kMaxStringLength] = { 0 };
+  char kMaxBrightnessNode[64] = { 0 };
+
+  snprintf(kMaxBrightnessNode, sizeof(kMaxBrightnessNode), "%s",
+           "/sys/class/leds/lcd-backlight/max_brightness");
+
+  panel_info->panel_max_brightness = 0;
+  int fd = Sys::open_(kMaxBrightnessNode, O_RDONLY);
+  if (fd < 0) {
+    DLOGW("Failed to open max brightness node = %s, error = %s", kMaxBrightnessNode,
+          strerror(errno));
+    return;
+  }
+
+  if (Sys::pread_(fd, brightness, sizeof(brightness), 0) > 0) {
+    panel_info->panel_max_brightness = atoi(brightness);
+    DLOGI("Max brightness level = %d", panel_info->panel_max_brightness);
+  } else {
+    DLOGW("Failed to read max brightness level. error = %s", strerror(errno));
+  }
+  Sys::close_(fd);
+
+  panel_info->panel_max_brightness = 255;
+}
+
+bool HWDeviceDRM::EnableHotPlugDetection(int enable) {
+  return true;
+}
+
+void HWDeviceDRM::ResetDisplayParams() {
+}
+
+DisplayError HWDeviceDRM::SetCursorPosition(HWLayers *hw_layers, int x, int y) {
+  DTRACE_SCOPED();
+  return kErrorNone;
+}
+
+DisplayError HWDeviceDRM::GetPPFeaturesVersion(PPFeatureVersion *vers) {
+  return kErrorNotSupported;
+}
+
+DisplayError HWDeviceDRM::SetPPFeatures(PPFeaturesConfig *feature_list) {
+  return kErrorNotSupported;
+}
+
+DisplayError HWDeviceDRM::SetVSyncState(bool enable) {
+  return kErrorNone;
+}
+
+void HWDeviceDRM::SetIdleTimeoutMs(uint32_t timeout_ms) {
+}
+
+DisplayError HWDeviceDRM::SetDisplayMode(const HWDisplayMode hw_display_mode) {
+  return kErrorNotSupported;
+}
+
+DisplayError HWDeviceDRM::SetRefreshRate(uint32_t refresh_rate) {
+  return kErrorNotSupported;
+}
+
+DisplayError HWDeviceDRM::SetPanelBrightness(int level) {
+  return kErrorNotSupported;
+}
+
+DisplayError HWDeviceDRM::GetHWScanInfo(HWScanInfo *scan_info) {
+  return kErrorNotSupported;
+}
+
+DisplayError HWDeviceDRM::GetVideoFormat(uint32_t config_index, uint32_t *video_format) {
+  return kErrorNotSupported;
+}
+
+DisplayError HWDeviceDRM::GetMaxCEAFormat(uint32_t *max_cea_format) {
+  return kErrorNotSupported;
+}
+
+DisplayError HWDeviceDRM::OnMinHdcpEncryptionLevelChange(uint32_t min_enc_level) {
+  return kErrorNotSupported;
+}
+
+DisplayError HWDeviceDRM::GetPanelBrightness(int *level) {
+  return kErrorNotSupported;
+}
+
+DisplayError HWDeviceDRM::SetS3DMode(HWS3DMode s3d_mode) {
+  return kErrorNotSupported;
+}
+
+DisplayError HWDeviceDRM::SetScaleLutConfig(HWScaleLutInfo *lut_info) {
+  return kErrorNone;
+}
+
+DisplayError HWDeviceDRM::SetMixerAttributes(const HWMixerAttributes &mixer_attributes) {
+  if (!hw_resource_.hw_dest_scalar_info.count) {
+    return kErrorNotSupported;
+  }
+
+  if (mixer_attributes.width > display_attributes_.x_pixels ||
+      mixer_attributes.height > display_attributes_.y_pixels) {
+    DLOGW("Input resolution exceeds display resolution! input: res %dx%d display: res %dx%d",
+          mixer_attributes.width, mixer_attributes.height, display_attributes_.x_pixels,
+          display_attributes_.y_pixels);
+    return kErrorNotSupported;
+  }
+
+  uint32_t max_input_width = hw_resource_.hw_dest_scalar_info.max_input_width;
+  if (display_attributes_.is_device_split) {
+    max_input_width *= 2;
+  }
+
+  if (mixer_attributes.width > max_input_width) {
+    DLOGW("Input width exceeds width limit! input_width %d width_limit %d", mixer_attributes.width,
+          max_input_width);
+    return kErrorNotSupported;
+  }
+
+  float mixer_aspect_ratio = FLOAT(mixer_attributes.width) / FLOAT(mixer_attributes.height);
+  float display_aspect_ratio =
+    FLOAT(display_attributes_.x_pixels) / FLOAT(display_attributes_.y_pixels);
+
+  if (display_aspect_ratio != mixer_aspect_ratio) {
+    DLOGW("Aspect ratio mismatch! input: res %dx%d display: res %dx%d", mixer_attributes.width,
+          mixer_attributes.height, display_attributes_.x_pixels, display_attributes_.y_pixels);
+    return kErrorNotSupported;
+  }
+
+  float scale_x = FLOAT(display_attributes_.x_pixels) / FLOAT(mixer_attributes.width);
+  float scale_y = FLOAT(display_attributes_.y_pixels) / FLOAT(mixer_attributes.height);
+  float max_scale_up = hw_resource_.hw_dest_scalar_info.max_scale_up;
+  if (scale_x > max_scale_up || scale_y > max_scale_up) {
+    DLOGW("Up scaling ratio exceeds for destination scalar upscale limit scale_x %f scale_y %f " \
+          "max_scale_up %f", scale_x, scale_y, max_scale_up);
+    return kErrorNotSupported;
+  }
+
+  float mixer_split_ratio = FLOAT(mixer_attributes_.split_left) / FLOAT(mixer_attributes_.width);
+
+  mixer_attributes_ = mixer_attributes;
+  mixer_attributes_.split_left = mixer_attributes_.width;
+  if (display_attributes_.is_device_split) {
+    mixer_attributes_.split_left = UINT32(FLOAT(mixer_attributes.width) * mixer_split_ratio);
+  }
+
+  return kErrorNone;
+}
+
+DisplayError HWDeviceDRM::GetMixerAttributes(HWMixerAttributes *mixer_attributes) {
+  if (!mixer_attributes) {
+    return kErrorParameters;
+  }
+
+  mixer_attributes_.width = display_attributes_.x_pixels;
+  mixer_attributes_.height = display_attributes_.y_pixels;
+  mixer_attributes_.split_left = display_attributes_.is_device_split ?
+      hw_panel_info_.split_info.left_split : mixer_attributes_.width;
+  *mixer_attributes = mixer_attributes_;
+
+  return kErrorNone;
+}
+
+}  // namespace sdm

sdm/libs/core/drm/hw_device_drm.h

@@ -0,0 +1,126 @@
+/*
+* Copyright (c) 2017, The Linux Foundation. All rights reserved.
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions are
+* met:
+*     * Redistributions of source code must retain the above copyright
+*       notice, this list of conditions and the following disclaimer.
+*     * Redistributions in binary form must reproduce the above
+*       copyright notice, this list of conditions and the following
+*       disclaimer in the documentation and/or other materials provided
+*       with the distribution.
+*     * Neither the name of The Linux Foundation nor the names of its
+*       contributors may be used to endorse or promote products derived
+*       from this software without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+* ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef __HW_DEVICE_DRM_H__
+#define __HW_DEVICE_DRM_H__
+
+#include <errno.h>
+#include <pthread.h>
+#include <xf86drmMode.h>
+#include <vector>
+
+#include "hw_interface.h"
+
+#define IOCTL_LOGE(ioctl, type) DLOGE("ioctl %s, device = %d errno = %d, desc = %s", #ioctl, \
+                                      type, errno, strerror(errno))
+
+namespace sdm {
+class HWInfoInterface;
+
+class HWDeviceDRM : public HWInterface {
+ public:
+  explicit HWDeviceDRM(BufferSyncHandler *buffer_sync_handler, HWInfoInterface *hw_info_intf);
+  virtual ~HWDeviceDRM() {}
+  virtual DisplayError Init();
+  virtual DisplayError Deinit();
+
+ protected:
+  // From HWInterface
+  virtual DisplayError GetActiveConfig(uint32_t *active_config);
+  virtual DisplayError GetNumDisplayAttributes(uint32_t *count);
+  virtual DisplayError GetDisplayAttributes(uint32_t index,
+                                            HWDisplayAttributes *display_attributes);
+  virtual DisplayError GetHWPanelInfo(HWPanelInfo *panel_info);
+  virtual DisplayError SetDisplayAttributes(uint32_t index);
+  virtual DisplayError SetDisplayAttributes(const HWDisplayAttributes &display_attributes);
+  virtual DisplayError GetConfigIndex(uint32_t mode, uint32_t *index);
+  virtual DisplayError PowerOn();
+  virtual DisplayError PowerOff();
+  virtual DisplayError Doze();
+  virtual DisplayError DozeSuspend();
+  virtual DisplayError Standby();
+  virtual DisplayError Validate(HWLayers *hw_layers);
+  virtual DisplayError Commit(HWLayers *hw_layers);
+  virtual DisplayError Flush();
+  virtual DisplayError GetPPFeaturesVersion(PPFeatureVersion *vers);
+  virtual DisplayError SetPPFeatures(PPFeaturesConfig *feature_list);
+  virtual DisplayError SetVSyncState(bool enable);
+  virtual void SetIdleTimeoutMs(uint32_t timeout_ms);
+  virtual DisplayError SetDisplayMode(const HWDisplayMode hw_display_mode);
+  virtual DisplayError SetRefreshRate(uint32_t refresh_rate);
+  virtual DisplayError SetPanelBrightness(int level);
+  virtual DisplayError GetHWScanInfo(HWScanInfo *scan_info);
+  virtual DisplayError GetVideoFormat(uint32_t config_index, uint32_t *video_format);
+  virtual DisplayError GetMaxCEAFormat(uint32_t *max_cea_format);
+  virtual DisplayError SetCursorPosition(HWLayers *hw_layers, int x, int y);
+  virtual DisplayError OnMinHdcpEncryptionLevelChange(uint32_t min_enc_level);
+  virtual DisplayError GetPanelBrightness(int *level);
+  virtual DisplayError SetAutoRefresh(bool enable) { return kErrorNone; }
+  virtual DisplayError SetS3DMode(HWS3DMode s3d_mode);
+  virtual DisplayError SetScaleLutConfig(HWScaleLutInfo *lut_info);
+  virtual DisplayError SetMixerAttributes(const HWMixerAttributes &mixer_attributes);
+  virtual DisplayError GetMixerAttributes(HWMixerAttributes *mixer_attributes);
+
+  enum {
+    kHWEventVSync,
+    kHWEventBlank,
+  };
+
+  static const int kMaxStringLength = 1024;
+  static const int kNumPhysicalDisplays = 2;
+
+  DisplayError SetFormat(const LayerBufferFormat &source, uint32_t *target);
+  DisplayError SetStride(HWDeviceType device_type, LayerBufferFormat format,
+                         uint32_t width, uint32_t *target);
+  void PopulateHWPanelInfo();
+  void GetHWPanelInfoByNode(int device_node, HWPanelInfo *panel_info);
+  void GetHWPanelNameByNode(int device_node, HWPanelInfo *panel_info);
+  void GetHWDisplayPortAndMode(int device_node, HWPanelInfo *panel_info);
+  void GetSplitInfo(int device_node, HWPanelInfo *panel_info);
+  void GetHWPanelMaxBrightnessFromNode(HWPanelInfo *panel_info);
+  int ParseLine(const char *input, char *tokens[], const uint32_t max_token, uint32_t *count);
+  int ParseLine(const char *input, const char *delim, char *tokens[],
+                const uint32_t max_token, uint32_t *count);
+  void ResetDisplayParams();
+  bool EnableHotPlugDetection(int enable);
+
+  HWResourceInfo hw_resource_;
+  HWPanelInfo hw_panel_info_;
+  HWInfoInterface *hw_info_intf_;
+  BufferSyncHandler *buffer_sync_handler_;
+  HWDeviceType device_type_;
+  const char *device_name_;
+  bool synchronous_commit_ = false;
+  HWDisplayAttributes display_attributes_ = {};
+  HWMixerAttributes mixer_attributes_ = {};
+};
+
+}  // namespace sdm
+
+#endif  // __HW_DEVICE_DRM_H__

sdm/libs/core/drm/hw_events_drm.cpp

@@ -0,0 +1,298 @@
+/*
+* Copyright (c) 2017, The Linux Foundation. All rights reserved.
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions are
+* met:
+*     * Redistributions of source code must retain the above copyright
+*       notice, this list of conditions and the following disclaimer.
+*     * Redistributions in binary form must reproduce the above
+*       copyright notice, this list of conditions and the following
+*       disclaimer in the documentation and/or other materials provided
+*       with the distribution.
+*     * Neither the name of The Linux Foundation nor the names of its
+*       contributors may be used to endorse or promote products derived
+*       from this software without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+* ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <drm_master.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <math.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/prctl.h>
+#include <sys/resource.h>
+#include <sys/types.h>
+#include <utils/debug.h>
+#include <utils/sys.h>
+#include <xf86drm.h>
+
+#include <algorithm>
+#include <map>
+#include <utility>
+#include <vector>
+
+#include "hw_events_drm.h"
+
+#define __CLASS__ "HWEventsDRM"
+
+namespace sdm {
+
+using drm_utils::DRMMaster;
+
+DisplayError HWEventsDRM::InitializePollFd() {
+  for (uint32_t i = 0; i < event_data_list_.size(); i++) {
+    char data[kMaxStringLength]{};
+    HWEventData &event_data = event_data_list_[i];
+    poll_fds_[i].fd = -1;
+
+    switch (event_data.event_type) {
+      case HWEvent::VSYNC: {
+        poll_fds_[i].events = POLLIN | POLLPRI | POLLERR;
+        DRMMaster *master = nullptr;
+        int ret = DRMMaster::GetInstance(&master);
+        if (ret < 0) {
+          DLOGE("Failed to acquire DRMMaster instance");
+          return kErrorNotSupported;
+        }
+        master->GetHandle(&poll_fds_[i].fd);
+        vsync_index_ = i;
+      } break;
+      case HWEvent::EXIT: {
+        // Create an eventfd to be used to unblock the poll system call when
+        // a thread is exiting.
+        poll_fds_[i].fd = Sys::eventfd_(0, 0);
+        poll_fds_[i].events |= POLLIN;
+        // Clear any existing data
+        Sys::pread_(poll_fds_[i].fd, data, kMaxStringLength, 0);
+      } break;
+      case HWEvent::IDLE_NOTIFY:
+      case HWEvent::CEC_READ_MESSAGE:
+      case HWEvent::SHOW_BLANK_EVENT:
+      case HWEvent::THERMAL_LEVEL:
+        break;
+    }
+  }
+
+  return kErrorNone;
+}
+
+DisplayError HWEventsDRM::SetEventParser() {
+  DisplayError error = kErrorNone;
+
+  for (auto &event_data : event_data_list_) {
+    switch (event_data.event_type) {
+      case HWEvent::VSYNC:
+        event_data.event_parser = &HWEventsDRM::HandleVSync;
+        break;
+      case HWEvent::IDLE_NOTIFY:
+        event_data.event_parser = &HWEventsDRM::HandleIdleTimeout;
+        break;
+      case HWEvent::CEC_READ_MESSAGE:
+        event_data.event_parser = &HWEventsDRM::HandleCECMessage;
+        break;
+      case HWEvent::EXIT:
+        event_data.event_parser = &HWEventsDRM::HandleThreadExit;
+        break;
+      case HWEvent::SHOW_BLANK_EVENT:
+        event_data.event_parser = &HWEventsDRM::HandleBlank;
+        break;
+      case HWEvent::THERMAL_LEVEL:
+        event_data.event_parser = &HWEventsDRM::HandleThermal;
+        break;
+      default:
+        error = kErrorParameters;
+        break;
+    }
+  }
+
+  return error;
+}
+
+void HWEventsDRM::PopulateHWEventData(const vector<HWEvent> &event_list) {
+  for (auto &event : event_list) {
+    HWEventData event_data;
+    event_data.event_type = event;
+    event_data_list_.push_back(std::move(event_data));
+  }
+
+  SetEventParser();
+  InitializePollFd();
+}
+
+DisplayError HWEventsDRM::Init(int display_type, HWEventHandler *event_handler,
+                               const vector<HWEvent> &event_list) {
+  if (!event_handler)
+    return kErrorParameters;
+
+  event_handler_ = event_handler;
+  poll_fds_.resize(event_list.size());
+  event_thread_name_ += " - " + std::to_string(display_type);
+
+  PopulateHWEventData(event_list);
+
+  if (pthread_create(&event_thread_, NULL, &DisplayEventThread, this) < 0) {
+    DLOGE("Failed to start %s, error = %s", event_thread_name_.c_str());
+    return kErrorResources;
+  }
+
+  return kErrorNone;
+}
+
+DisplayError HWEventsDRM::Deinit() {
+  exit_threads_ = true;
+  Sys::pthread_cancel_(event_thread_);
+
+  for (uint32_t i = 0; i < event_data_list_.size(); i++) {
+    if (event_data_list_[i].event_type == HWEvent::EXIT) {
+      uint64_t exit_value = 1;
+      ssize_t write_size = Sys::write_(poll_fds_[i].fd, &exit_value, sizeof(uint64_t));
+      if (write_size != sizeof(uint64_t)) {
+        DLOGW("Error triggering exit fd (%d). write size = %d, error = %s", poll_fds_[i].fd,
+              write_size, strerror(errno));
+      }
+    }
+  }
+
+  pthread_join(event_thread_, NULL);
+  CloseFds();
+
+  return kErrorNone;
+}
+
+DisplayError HWEventsDRM::CloseFds() {
+  for (uint32_t i = 0; i < event_data_list_.size(); i++) {
+    switch (event_data_list_[i].event_type) {
+      case HWEvent::VSYNC:
+        poll_fds_[i].fd = -1;
+        break;
+      case HWEvent::EXIT:
+        Sys::close_(poll_fds_[i].fd);
+        poll_fds_[i].fd = -1;
+        break;
+      case HWEvent::IDLE_NOTIFY:
+      case HWEvent::CEC_READ_MESSAGE:
+      case HWEvent::SHOW_BLANK_EVENT:
+      case HWEvent::THERMAL_LEVEL:
+        break;
+      default:
+        return kErrorNotSupported;
+    }
+  }
+
+  return kErrorNone;
+}
+
+void *HWEventsDRM::DisplayEventThread(void *context) {
+  if (context) {
+    return reinterpret_cast<HWEventsDRM *>(context)->DisplayEventHandler();
+  }
+
+  return NULL;
+}
+
+void *HWEventsDRM::DisplayEventHandler() {
+  char data[kMaxStringLength]{};
+
+  prctl(PR_SET_NAME, event_thread_name_.c_str(), 0, 0, 0);
+  setpriority(PRIO_PROCESS, 0, kThreadPriorityUrgent);
+
+  while (!exit_threads_) {
+    if (RegisterVSync() != kErrorNone) {
+      pthread_exit(0);
+      return nullptr;
+    }
+
+    int error = Sys::poll_(poll_fds_.data(), UINT32(poll_fds_.size()), -1);
+    if (error <= 0) {
+      DLOGW("poll failed. error = %s", strerror(errno));
+      continue;
+    }
+
+    for (uint32_t i = 0; i < event_data_list_.size(); i++) {
+      pollfd &poll_fd = poll_fds_[i];
+      switch (event_data_list_[i].event_type) {
+        case HWEvent::VSYNC:
+          (this->*(event_data_list_[i]).event_parser)(nullptr);
+          break;
+        case HWEvent::EXIT:
+          if ((poll_fd.revents & POLLIN) &&
+              (Sys::read_(poll_fd.fd, data, kMaxStringLength) > 0)) {
+            (this->*(event_data_list_[i]).event_parser)(data);
+          }
+          break;
+        case HWEvent::IDLE_NOTIFY:
+        case HWEvent::CEC_READ_MESSAGE:
+        case HWEvent::SHOW_BLANK_EVENT:
+        case HWEvent::THERMAL_LEVEL:
+          if (poll_fd.fd >= 0 && (poll_fd.revents & POLLPRI) &&
+              (Sys::pread_(poll_fd.fd, data, kMaxStringLength, 0) > 0)) {
+            (this->*(event_data_list_[i]).event_parser)(data);
+          }
+          break;
+      }
+    }
+  }
+
+  pthread_exit(0);
+
+  return nullptr;
+}
+
+DisplayError HWEventsDRM::RegisterVSync() {
+  drmVBlank vblank{};
+  vblank.request.type = (drmVBlankSeqType)(DRM_VBLANK_RELATIVE | DRM_VBLANK_EVENT);
+  vblank.request.sequence = 1;
+  // DRM hack to pass in context to unused field signal. Driver will write this to the node being
+  // polled on, and will be read as part of drm event handling and sent to handler
+  vblank.request.signal = reinterpret_cast<unsigned long>(this);  // NOLINT
+  int error = drmWaitVBlank(poll_fds_[vsync_index_].fd, &vblank);
+  if (error < 0) {
+    DLOGE("drmWaitVBlank failed with err %d", errno);
+    return kErrorResources;
+  }
+
+  return kErrorNone;
+}
+
+void HWEventsDRM::HandleVSync(char *data) {
+  if (poll_fds_[vsync_index_].revents & (POLLIN | POLLPRI)) {
+    drmEventContext event = {};
+    event.version = DRM_EVENT_CONTEXT_VERSION;
+    event.vblank_handler = &HWEventsDRM::VSyncHandlerCallback;
+    int error = drmHandleEvent(poll_fds_[vsync_index_].fd, &event);
+    if (error != 0) {
+      DLOGE("drmHandleEvent failed: %i", error);
+    }
+  }
+}
+
+void HWEventsDRM::VSyncHandlerCallback(int fd, unsigned int sequence, unsigned int tv_sec,
+                                       unsigned int tv_usec, void *data) {
+  int64_t timestamp = (int64_t)(tv_sec)*1000000000 + (int64_t)(tv_usec)*1000;
+  reinterpret_cast<HWEventsDRM *>(data)->event_handler_->VSync(timestamp);
+}
+
+void HWEventsDRM::HandleIdleTimeout(char *data) {
+  event_handler_->IdleTimeout();
+}
+
+void HWEventsDRM::HandleCECMessage(char *data) {
+  event_handler_->CECMessage(data);
+}
+
+}  // namespace sdm

sdm/libs/core/drm/hw_events_drm.h

@@ -0,0 +1,90 @@
+/*
+* Copyright (c) 2017, The Linux Foundation. All rights reserved.
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions are
+* met:
+*     * Redistributions of source code must retain the above copyright
+*       notice, this list of conditions and the following disclaimer.
+*     * Redistributions in binary form must reproduce the above
+*       copyright notice, this list of conditions and the following
+*       disclaimer in the documentation and/or other materials provided
+*       with the distribution.
+*     * Neither the name of The Linux Foundation nor the names of its
+*       contributors may be used to endorse or promote products derived
+*       from this software without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+* ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef __HW_EVENTS_DRM_H__
+#define __HW_EVENTS_DRM_H__
+
+#include <sys/poll.h>
+#include <map>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "hw_events_interface.h"
+#include "hw_interface.h"
+
+namespace sdm {
+
+using std::vector;
+
+class HWEventsDRM : public HWEventsInterface {
+ public:
+  virtual DisplayError Init(int display_type, HWEventHandler *event_handler,
+                            const vector<HWEvent> &event_list);
+  virtual DisplayError Deinit();
+
+ private:
+  static const int kMaxStringLength = 1024;
+
+  typedef void (HWEventsDRM::*EventParser)(char *);
+
+  struct HWEventData {
+    HWEvent event_type {};
+    EventParser event_parser {};
+  };
+
+  static void *DisplayEventThread(void *context);
+  static void VSyncHandlerCallback(int fd, unsigned int sequence, unsigned int tv_sec,
+                                   unsigned int tv_usec, void *data);
+
+  void *DisplayEventHandler();
+  void HandleVSync(char *data);
+  void HandleIdleTimeout(char *data);
+  void HandleCECMessage(char *data);
+  void HandleThreadExit(char *data) {}
+  void HandleThermal(char *data) {}
+  void HandleBlank(char *data) {}
+  void PopulateHWEventData(const vector<HWEvent> &event_list);
+  DisplayError SetEventParser();
+  DisplayError InitializePollFd();
+  DisplayError CloseFds();
+  DisplayError RegisterVSync();
+
+  HWEventHandler *event_handler_{};
+  vector<HWEventData> event_data_list_{};
+  vector<pollfd> poll_fds_{};
+  pthread_t event_thread_{};
+  std::string event_thread_name_ = "SDM_EventThread";
+  bool exit_threads_ = false;
+  uint32_t vsync_index_ = 0;
+};
+
+}  // namespace sdm
+
+#endif  // __HW_EVENTS_DRM_H__

sdm/libs/core/drm/hw_info_drm.cpp

@@ -0,0 +1,257 @@
+/*
+* Copyright (c) 2017, The Linux Foundation. All rights reserved.
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions are
+* met:
+*     * Redistributions of source code must retain the above copyright
+*       notice, this list of conditions and the following disclaimer.
+*     * Redistributions in binary form must reproduce the above
+*       copyright notice, this list of conditions and the following
+*       disclaimer in the documentation and/or other materials provided
+*       with the distribution.
+*     * Neither the name of The Linux Foundation nor the names of its
+*       contributors may be used to endorse or promote products derived
+*       from this software without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+* ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <utils/constants.h>
+#include <utils/debug.h>
+#include <utils/sys.h>
+#include <dlfcn.h>
+#include <drm/drm_fourcc.h>
+
+#include <algorithm>
+#include <iostream>
+#include <fstream>
+#include <map>
+#include <memory>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "hw_info_drm.h"
+
+#define __CLASS__ "HWInfoDRM"
+
+using std::vector;
+using std::map;
+using std::string;
+using std::fstream;
+using std::to_string;
+
+namespace sdm {
+
+int HWInfoDRM::ParseString(const char *input, char *tokens[], const uint32_t max_token,
+                        const char *delim, uint32_t *count) {
+  char *tmp_token = NULL;
+  char *temp_ptr;
+  uint32_t index = 0;
+  if (!input) {
+    return -1;
+  }
+  tmp_token = strtok_r(const_cast<char *>(input), delim, &temp_ptr);
+  while (tmp_token && index < max_token) {
+    tokens[index++] = tmp_token;
+    tmp_token = strtok_r(NULL, delim, &temp_ptr);
+  }
+  *count = index;
+
+  return 0;
+}
+
+DisplayError HWInfoDRM::GetDynamicBWLimits(HWResourceInfo *hw_resource) {
+  HWDynBwLimitInfo* bw_info = &hw_resource->dyn_bw_info;
+  for (int index = 0; index < kBwModeMax; index++) {
+    bw_info->total_bw_limit[index] = UINT32(hw_resource->max_bandwidth_low);
+    bw_info->pipe_bw_limit[index] = hw_resource->max_pipe_bw;
+  }
+
+  return kErrorNone;
+}
+
+DisplayError HWInfoDRM::GetHWResourceInfo(HWResourceInfo *hw_resource) {
+  InitSupportedFormatMap(hw_resource);
+  hw_resource->hw_version = kHWMdssVersion5;
+  hw_resource->hw_revision = 268894210;  // HW Rev, v1/v2
+  hw_resource->num_blending_stages = 7;
+  hw_resource->max_scale_down = 4;
+  hw_resource->max_scale_up = 20;
+  hw_resource->max_bandwidth_low = 9600000;
+  hw_resource->max_bandwidth_high = 9600000;
+  hw_resource->max_mixer_width = 2560;
+  hw_resource->max_pipe_width = 2560;
+  hw_resource->max_cursor_size = 128;
+  hw_resource->max_pipe_bw = 4500000;
+  hw_resource->max_sde_clk = 412500000;
+  hw_resource->clk_fudge_factor = FLOAT(105) / FLOAT(100);
+  hw_resource->macrotile_nv12_factor = 8;
+  hw_resource->macrotile_factor = 4;
+  hw_resource->linear_factor = 1;
+  hw_resource->scale_factor = 1;
+  hw_resource->extra_fudge_factor = 2;
+  hw_resource->amortizable_threshold = 0;
+  hw_resource->system_overhead_lines = 0;
+  hw_resource->writeback_index = 2;
+  hw_resource->hw_dest_scalar_info.count = 0;
+  hw_resource->hw_dest_scalar_info.max_scale_up = 0;
+  hw_resource->hw_dest_scalar_info.max_input_width = 0;
+  hw_resource->hw_dest_scalar_info.max_output_width = 0;
+  hw_resource->has_bwc = false;
+  hw_resource->has_ubwc = true;
+  hw_resource->has_decimation = true;
+  hw_resource->has_macrotile = true;
+  hw_resource->is_src_split = true;
+  hw_resource->has_non_scalar_rgb = false;
+  hw_resource->perf_calc = false;
+  hw_resource->has_dyn_bw_support = false;
+  hw_resource->separate_rotator = true;
+  hw_resource->has_qseed3 = false;
+  hw_resource->has_concurrent_writeback = false;
+  hw_resource->num_vig_pipe = 0;
+  hw_resource->num_dma_pipe = 0;
+  hw_resource->num_cursor_pipe = 0;
+  uint32_t pipe_count = 2;
+  for (uint32_t i = 0; i < pipe_count; i++) {
+    HWPipeCaps pipe_caps;
+    pipe_caps.type = kPipeTypeUnused;
+    pipe_caps.type = kPipeTypeRGB;
+    hw_resource->num_rgb_pipe++;
+    pipe_caps.id = UINT32(0x8 << i);
+    pipe_caps.max_rects = 1;
+    hw_resource->hw_pipes.push_back(pipe_caps);
+  }
+
+  // Disable destination scalar count to 0 if extension library is not present
+  DynLib extension_lib;
+  if (!extension_lib.Open("libsdmextension.so")) {
+    hw_resource->hw_dest_scalar_info.count = 0;
+  }
+
+  DLOGI("SDE Version = %d, SDE Revision = %x, RGB = %d, VIG = %d, DMA = %d, Cursor = %d",
+        hw_resource->hw_version, hw_resource->hw_revision, hw_resource->num_rgb_pipe,
+        hw_resource->num_vig_pipe, hw_resource->num_dma_pipe, hw_resource->num_cursor_pipe);
+  DLOGI("Upscale Ratio = %d, Downscale Ratio = %d, Blending Stages = %d", hw_resource->max_scale_up,
+        hw_resource->max_scale_down, hw_resource->num_blending_stages);
+  DLOGI("SourceSplit = %d QSEED3 = %d", hw_resource->is_src_split, hw_resource->has_qseed3);
+  DLOGI("BWC = %d, UBWC = %d, Decimation = %d, Tile Format = %d Concurrent Writeback = %d",
+        hw_resource->has_bwc, hw_resource->has_ubwc, hw_resource->has_decimation,
+        hw_resource->has_macrotile, hw_resource->has_concurrent_writeback);
+  DLOGI("MaxLowBw = %" PRIu64 " , MaxHighBw = % " PRIu64 "", hw_resource->max_bandwidth_low,
+        hw_resource->max_bandwidth_high);
+  DLOGI("MaxPipeBw = %" PRIu64 " KBps, MaxSDEClock = % " PRIu64 " Hz, ClockFudgeFactor = %f",
+        hw_resource->max_pipe_bw, hw_resource->max_sde_clk, hw_resource->clk_fudge_factor);
+  DLOGI("Prefill factors: Tiled_NV12 = %d, Tiled = %d, Linear = %d, Scale = %d, Fudge_factor = %d",
+        hw_resource->macrotile_nv12_factor, hw_resource->macrotile_factor,
+        hw_resource->linear_factor, hw_resource->scale_factor, hw_resource->extra_fudge_factor);
+
+  if (hw_resource->separate_rotator || hw_resource->num_dma_pipe) {
+    GetHWRotatorInfo(hw_resource);
+  }
+
+  // If the driver doesn't spell out the wb index, assume it to be the number of rotators,
+  // based on legacy implementation.
+  if (hw_resource->writeback_index == kHWBlockMax) {
+    hw_resource->writeback_index = hw_resource->hw_rot_info.num_rotator;
+  }
+
+  if (hw_resource->has_dyn_bw_support) {
+    DisplayError ret = GetDynamicBWLimits(hw_resource);
+    if (ret != kErrorNone) {
+      DLOGE("Failed to read dynamic band width info");
+      return ret;
+    }
+
+    DLOGI("Has Support for multiple bw limits shown below");
+    for (int index = 0; index < kBwModeMax; index++) {
+      DLOGI("Mode-index=%d  total_bw_limit=%d and pipe_bw_limit=%d",
+            index, hw_resource->dyn_bw_info.total_bw_limit[index],
+            hw_resource->dyn_bw_info.pipe_bw_limit[index]);
+    }
+  }
+
+  return kErrorNone;
+}
+
+DisplayError HWInfoDRM::GetHWRotatorInfo(HWResourceInfo *hw_resource) {
+  const uint32_t kMaxV4L2Nodes = 64;
+  bool found = false;
+
+  for (uint32_t i = 0; (i < kMaxV4L2Nodes) && (false == found); i++) {
+    string path = "/sys/class/video4linux/video" + to_string(i) + "/name";
+    Sys::fstream fs(path, fstream::in);
+    if (!fs.is_open()) {
+      continue;
+    }
+
+    string line;
+    if (Sys::getline_(fs, line) &&
+        (!strncmp(line.c_str(), "sde_rotator", strlen("sde_rotator")))) {
+       hw_resource->hw_rot_info.device_path = string("/dev/video" + to_string(i));
+       hw_resource->hw_rot_info.num_rotator++;
+       hw_resource->hw_rot_info.type = HWRotatorInfo::ROT_TYPE_V4L2;
+       hw_resource->hw_rot_info.has_downscale = true;
+       // We support only 1 rotator
+       found = true;
+    }
+  }
+
+  DLOGI("V4L2 Rotator: Count = %d, Downscale = %d", hw_resource->hw_rot_info.num_rotator,
+        hw_resource->hw_rot_info.has_downscale);
+
+  return kErrorNone;
+}
+
+LayerBufferFormat HWInfoDRM::GetSDMFormat(uint32_t drm_format, uint32_t drm_format_modifier) {
+  switch (drm_format) {
+    case DRM_FORMAT_RGBA8888: return kFormatRGBA8888;
+    default: return kFormatInvalid;
+  }
+}
+
+void HWInfoDRM::InitSupportedFormatMap(HWResourceInfo *hw_resource) {
+  hw_resource->supported_formats_map.clear();
+
+  for (int sub_blk_type = INT(kHWVIGPipe); sub_blk_type < INT(kHWSubBlockMax); sub_blk_type++) {
+    PopulateSupportedFormatMap((HWSubBlockType)sub_blk_type, hw_resource);
+  }
+}
+
+void HWInfoDRM::PopulateSupportedFormatMap(HWSubBlockType sub_blk_type,
+                                           HWResourceInfo *hw_resource) {
+  vector <LayerBufferFormat> supported_sdm_formats;
+  LayerBufferFormat sdm_format = kFormatRGBA8888;  // GetSDMFormat(INT(mdp_format));
+  if (sdm_format != kFormatInvalid) {
+    supported_sdm_formats.push_back(sdm_format);
+  }
+
+  hw_resource->supported_formats_map.erase(sub_blk_type);
+  hw_resource->supported_formats_map.insert(make_pair(sub_blk_type, supported_sdm_formats));
+}
+
+DisplayError HWInfoDRM::GetFirstDisplayInterfaceType(HWDisplayInterfaceInfo *hw_disp_info) {
+  hw_disp_info->type = kPrimary;
+  hw_disp_info->is_connected = true;
+
+  return kErrorNone;
+}
+
+}  // namespace sdm

sdm/libs/core/drm/hw_info_drm.h

@@ -0,0 +1,68 @@
+/*
+* Copyright (c) 2017, The Linux Foundation. All rights reserved.
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions are
+* met:
+*     * Redistributions of source code must retain the above copyright
+*       notice, this list of conditions and the following disclaimer.
+*     * Redistributions in binary form must reproduce the above
+*       copyright notice, this list of conditions and the following
+*       disclaimer in the documentation and/or other materials provided
+*       with the distribution.
+*     * Neither the name of The Linux Foundation nor the names of its
+*       contributors may be used to endorse or promote products derived
+*       from this software without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+* ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef __HW_INFO_DRM_H__
+#define __HW_INFO_DRM_H__
+
+#include <core/sdm_types.h>
+#include <core/core_interface.h>
+#include <private/hw_info_types.h>
+#include <bitset>
+
+#include "hw_info_interface.h"
+
+namespace sdm {
+
+class HWInfoDRM: public HWInfoInterface {
+ public:
+  virtual DisplayError GetHWResourceInfo(HWResourceInfo *hw_resource);
+  virtual DisplayError GetFirstDisplayInterfaceType(HWDisplayInterfaceInfo *hw_disp_info);
+
+ private:
+  virtual DisplayError GetHWRotatorInfo(HWResourceInfo *hw_resource);
+
+  // TODO(user): Read Mdss version from the driver
+  static const int kHWMdssVersion5 = 500;  // MDSS_V5
+  static const int kMaxStringLength = 1024;
+  // MDP Capabilities are replicated across all frame buffer devices.
+  // However, we rely on reading the capabalities from fbO since this
+  // is guaranteed to be available.
+  static const int kHWCapabilitiesNode = 0;
+
+  static int ParseString(const char *input, char *tokens[], const uint32_t max_token,
+                         const char *delim, uint32_t *count);
+  DisplayError GetDynamicBWLimits(HWResourceInfo *hw_resource);
+  LayerBufferFormat GetSDMFormat(uint32_t drm_format, uint32_t drm_format_modifier);
+  void InitSupportedFormatMap(HWResourceInfo *hw_resource);
+  void PopulateSupportedFormatMap(HWSubBlockType sub_blk_type, HWResourceInfo *hw_resource);
+};
+
+}  // namespace sdm
+
+#endif  // __HW_INFO_DRM_H__

sdm/libs/core/fb/hw_device.cpp

@@ -61,46 +61,6 @@ using std::fstream;
 
 namespace sdm {
 
-DisplayError HWInterface::Create(DisplayType type, HWInfoInterface *hw_info_intf,
-                                        BufferSyncHandler *buffer_sync_handler,
-                                        HWInterface **intf) {
-  DisplayError error = kErrorNone;
-  HWDevice *hw = nullptr;
-
-  switch (type) {
-    case kPrimary:
-      hw = new HWPrimary(buffer_sync_handler, hw_info_intf);
-      break;
-    case kHDMI:
-      hw = new HWHDMI(buffer_sync_handler, hw_info_intf);
-      break;
-    case kVirtual:
-      hw = new HWVirtual(buffer_sync_handler, hw_info_intf);
-      break;
-    default:
-      DLOGE("Undefined display type");
-      return kErrorUndefined;
-  }
-
-  error = hw->Init();
-  if (error != kErrorNone) {
-    delete hw;
-    DLOGE("Init on HW Intf type %d failed", type);
-    return error;
-  }
-  *intf = hw;
-
-  return error;
-}
-
-DisplayError HWInterface::Destroy(HWInterface *intf) {
-  HWDevice *hw = static_cast<HWDevice *>(intf);
-  hw->Deinit();
-  delete hw;
-
-  return kErrorNone;
-}
-
 HWDevice::HWDevice(BufferSyncHandler *buffer_sync_handler)
   : fb_node_index_(-1), fb_path_("/sys/devices/virtual/graphics/fb"),
     buffer_sync_handler_(buffer_sync_handler), synchronous_commit_(false) {

sdm/libs/core/fb/hw_events.cpp

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2015 - 2016, The Linux Foundation. All rights reserved.
+* Copyright (c) 2015 - 2017, The Linux Foundation. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
@@ -49,55 +49,28 @@
 
 namespace sdm {
 
-DisplayError HWEventsInterface::Create(int fb_num, HWEventHandler *event_handler,
-                                       std::vector<const char *> *event_list,
-                                       HWEventsInterface **intf) {
-  DisplayError error = kErrorNone;
-  HWEvents *hw_events = NULL;
-
-  hw_events = new HWEvents();
-  error = hw_events->Init(fb_num, event_handler, event_list);
-  if (error != kErrorNone) {
-    delete hw_events;
-  } else {
-    *intf = hw_events;
-  }
-
-  return error;
-}
-
-DisplayError HWEventsInterface::Destroy(HWEventsInterface *intf) {
-  HWEvents *hw_events = static_cast<HWEvents *>(intf);
-
-  if (hw_events) {
-    hw_events->Deinit();
-    delete hw_events;
-  }
-
-  return kErrorNone;
-}
-
 pollfd HWEvents::InitializePollFd(HWEventData *event_data) {
   char node_path[kMaxStringLength] = {0};
   char data[kMaxStringLength] = {0};
   pollfd poll_fd = {0};
   poll_fd.fd = -1;
 
-  if (!strncmp(event_data->event_name, "thread_exit", strlen("thread_exit"))) {
+  if (event_data->event_type == HWEvent::EXIT) {
     // Create an eventfd to be used to unblock the poll system call when
     // a thread is exiting.
     poll_fd.fd = Sys::eventfd_(0, 0);
     poll_fd.events |= POLLIN;
     exit_fd_ = poll_fd.fd;
   } else {
-    snprintf(node_path, sizeof(node_path), "%s%d/%s", fb_path_, fb_num_, event_data->event_name);
+    snprintf(node_path, sizeof(node_path), "%s%d/%s", fb_path_, fb_num_,
+             map_event_to_node_[event_data->event_type]);
     poll_fd.fd = Sys::open_(node_path, O_RDONLY);
     poll_fd.events |= POLLPRI | POLLERR;
   }
 
   if (poll_fd.fd < 0) {
-    DLOGW("open failed for display=%d event=%s, error=%s", fb_num_, event_data->event_name,
+    DLOGW("open failed for display=%d event=%s, error=%s", fb_num_,
-          strerror(errno));
+          map_event_to_node_[event_data->event_type], strerror(errno));
     return poll_fd;
   }
 
@@ -107,49 +80,58 @@ pollfd HWEvents::InitializePollFd(HWEventData *event_data) {
   return poll_fd;
 }
 
-DisplayError HWEvents::SetEventParser(const char *event_name, HWEventData *event_data) {
+DisplayError HWEvents::SetEventParser(HWEvent event_type, HWEventData *event_data) {
   DisplayError error = kErrorNone;
-
+  switch (event_type) {
-  if (!strncmp(event_name, "vsync_event", strlen("vsync_event"))) {
+    case HWEvent::VSYNC:
       event_data->event_parser = &HWEvents::HandleVSync;
-  } else if (!strncmp(event_name, "show_blank_event", strlen("show_blank_event"))) {
+      break;
-    event_data->event_parser = &HWEvents::HandleBlank;
+    case HWEvent::IDLE_NOTIFY:
-  } else if (!strncmp(event_name, "idle_notify", strlen("idle_notify"))) {
       event_data->event_parser = &HWEvents::HandleIdleTimeout;
-  } else if (!strncmp(event_name, "msm_fb_thermal_level", strlen("msm_fb_thermal_level"))) {
+      break;
-    event_data->event_parser = &HWEvents::HandleThermal;
+    case HWEvent::CEC_READ_MESSAGE:
-  } else if (!strncmp(event_name, "cec/rd_msg", strlen("cec/rd_msg"))) {
       event_data->event_parser = &HWEvents::HandleCECMessage;
-  } else if (!strncmp(event_name, "thread_exit", strlen("thread_exit"))) {
+      break;
+    case HWEvent::EXIT:
       event_data->event_parser = &HWEvents::HandleThreadExit;
-  } else {
+      break;
+    case HWEvent::SHOW_BLANK_EVENT:
+      event_data->event_parser = &HWEvents::HandleBlank;
+      break;
+    case HWEvent::THERMAL_LEVEL:
+      event_data->event_parser = &HWEvents::HandleThermal;
+      break;
+    default:
       error = kErrorParameters;
+      break;
   }
 
   return error;
 }
 
 void HWEvents::PopulateHWEventData() {
-  for (uint32_t i = 0; i < event_list_->size(); i++) {
+  for (uint32_t i = 0; i < event_list_.size(); i++) {
-    const char *event_name = event_list_->at(i);
     HWEventData event_data;
-    event_data.event_name = event_name;
+    event_data.event_type = event_list_[i];
-    SetEventParser(event_name, &event_data);
+    SetEventParser(event_list_[i], &event_data);
     poll_fds_[i] = InitializePollFd(&event_data);
     event_data_list_.push_back(event_data);
   }
 }
 
 DisplayError HWEvents::Init(int fb_num, HWEventHandler *event_handler,
-                            vector<const char *> *event_list) {
+                            const vector<HWEvent> &event_list) {
   if (!event_handler)
     return kErrorParameters;
 
   event_handler_ = event_handler;
   fb_num_ = fb_num;
   event_list_ = event_list;
-  poll_fds_.resize(event_list_->size());
+  poll_fds_.resize(event_list_.size());
   event_thread_name_ += " - " + std::to_string(fb_num_);
+  map_event_to_node_ = {{HWEvent::VSYNC, "vsync_event"}, {HWEvent::EXIT, "thread_exit"},
+    {HWEvent::IDLE_NOTIFY, "idle_notify"}, {HWEvent::SHOW_BLANK_EVENT, "show_blank_event"},
+    {HWEvent::CEC_READ_MESSAGE, "cec/rd_msg"}, {HWEvent::THERMAL_LEVEL, "msm_fb_thermal_level"}};
 
   PopulateHWEventData();
 
@@ -173,7 +155,7 @@ DisplayError HWEvents::Deinit() {
 
   pthread_join(event_thread_, NULL);
 
-  for (uint32_t i = 0; i < event_list_->size(); i++) {
+  for (uint32_t i = 0; i < event_list_.size(); i++) {
     Sys::close_(poll_fds_[i].fd);
     poll_fds_[i].fd = -1;
   }
@@ -196,17 +178,17 @@ void* HWEvents::DisplayEventHandler() {
   setpriority(PRIO_PROCESS, 0, kThreadPriorityUrgent);
 
   while (!exit_threads_) {
-    int error = Sys::poll_(poll_fds_.data(), UINT32(event_list_->size()), -1);
+    int error = Sys::poll_(poll_fds_.data(), UINT32(event_list_.size()), -1);
 
     if (error <= 0) {
       DLOGW("poll failed. error = %s", strerror(errno));
       continue;
     }
 
-    for (uint32_t event = 0; event < event_list_->size(); event++) {
+    for (uint32_t event = 0; event < event_list_.size(); event++) {
       pollfd &poll_fd = poll_fds_[event];
 
-      if (!strncmp(event_list_->at(event), "thread_exit", strlen("thread_exit"))) {
+      if (event_list_.at(event) == HWEvent::EXIT) {
         if ((poll_fd.revents & POLLIN) && (Sys::read_(poll_fd.fd, data, kMaxStringLength) > 0)) {
           (this->*(event_data_list_[event]).event_parser)(data);
         }
@@ -253,4 +235,3 @@ void HWEvents::HandleCECMessage(char *data) {
 }
 
 }  // namespace sdm
-

sdm/libs/core/fb/hw_events.h

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2015 - 2016, The Linux Foundation. All rights reserved.
+* Copyright (c) 2015 - 2017, The Linux Foundation. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are permitted
 * provided that the following conditions are met:
@@ -37,12 +37,13 @@
 namespace sdm {
 
 using std::vector;
+using std::map;
 
 class HWEvents : public HWEventsInterface {
  public:
-  DisplayError Init(int fb_num, HWEventHandler *event_handler,
+  virtual DisplayError Init(int fb_num, HWEventHandler *event_handler,
-                    vector<const char *> *event_list);
+                            const vector<HWEvent> &event_list);
-  DisplayError Deinit();
+  virtual DisplayError Deinit();
 
  private:
   static const int kMaxStringLength = 1024;
@@ -50,8 +51,8 @@ class HWEvents : public HWEventsInterface {
   typedef void (HWEvents::*EventParser)(char *);
 
   struct HWEventData {
-    const char* event_name = NULL;
+    HWEvent event_type {};
-    EventParser event_parser = NULL;
+    EventParser event_parser {};
   };
 
   static void* DisplayEventThread(void *context);
@@ -63,14 +64,15 @@ class HWEvents : public HWEventsInterface {
   void HandleCECMessage(char *data);
   void HandleThreadExit(char *data) { }
   void PopulateHWEventData();
-  DisplayError SetEventParser(const char *event_name, HWEventData *event_data);
+  DisplayError SetEventParser(HWEvent event_type, HWEventData *event_data);
   pollfd InitializePollFd(HWEventData *event_data);
 
-  HWEventHandler *event_handler_ = NULL;
+  HWEventHandler *event_handler_ = {};
-  vector<const char *> *event_list_ = NULL;
+  vector<HWEvent> event_list_ = {};
   vector<HWEventData> event_data_list_ = {};
-  vector<pollfd> poll_fds_;
+  vector<pollfd> poll_fds_ = {};
-  pthread_t event_thread_;
+  map<HWEvent, const char *> map_event_to_node_ = {};
+  pthread_t event_thread_ = {};
   std::string event_thread_name_ = "SDM_EventThread";
   bool exit_threads_ = false;
   const char* fb_path_ = "/sys/devices/virtual/graphics/fb";

sdm/libs/core/fb/hw_info.cpp

@@ -86,27 +86,6 @@ int HWInfo::ParseString(const char *input, char *tokens[], const uint32_t max_to
   return 0;
 }
 
-DisplayError HWInfoInterface::Create(HWInfoInterface **intf) {
-  DisplayError error = kErrorNone;
-  HWInfo *hw_info = NULL;
-
-  hw_info = new HWInfo();
-  if (!hw_info) {
-    error = kErrorMemory;
-  } else {
-    *intf = hw_info;
-  }
-
-  return error;
-}
-
-DisplayError HWInfoInterface::Destroy(HWInfoInterface *intf) {
-  HWInfo *hw_info = static_cast<HWInfo *>(intf);
-  delete hw_info;
-
-  return kErrorNone;
-}
-
 DisplayError HWInfo::GetDynamicBWLimits(HWResourceInfo *hw_resource) {
   Sys::fstream fs(kBWModeBitmap, fstream::in);
   if (!fs.is_open()) {

sdm/libs/core/hw_events_interface.cpp

@@ -0,0 +1,75 @@
+/*
+* Copyright (c) 2017, The Linux Foundation. All rights reserved.
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions are
+* met:
+*     * Redistributions of source code must retain the above copyright
+*       notice, this list of conditions and the following disclaimer.
+*     * Redistributions in binary form must reproduce the above
+*       copyright notice, this list of conditions and the following
+*       disclaimer in the documentation and/or other materials provided
+*       with the distribution.
+*     * Neither the name of The Linux Foundation nor the names of its
+*       contributors may be used to endorse or promote products derived
+*       from this software without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+* ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <utils/utils.h>
+#include <vector>
+
+#include "hw_events_interface.h"
+#include "fb/hw_events.h"
+#ifdef COMPILE_DRM
+#include "drm/hw_events_drm.h"
+#endif
+
+#define __CLASS__ "HWEventsInterface"
+
+namespace sdm {
+
+DisplayError HWEventsInterface::Create(int display_type, HWEventHandler *event_handler,
+                                       const std::vector<HWEvent> &event_list,
+                                       HWEventsInterface **intf) {
+  DisplayError error = kErrorNone;
+  HWEventsInterface *hw_events = nullptr;
+  if (GetDriverType() == DriverType::FB) {
+    hw_events = new HWEvents();
+  } else {
+#ifdef COMPILE_DRM
+    hw_events = new HWEventsDRM();
+#endif
+  }
+
+  error = hw_events->Init(display_type, event_handler, event_list);
+  if (error != kErrorNone) {
+    delete hw_events;
+  } else {
+    *intf = hw_events;
+  }
+
+  return error;
+}
+
+DisplayError HWEventsInterface::Destroy(HWEventsInterface *intf) {
+  if (intf) {
+    intf->Deinit();
+    delete intf;
+  }
+
+  return kErrorNone;
+}
+
+}  // namespace sdm

sdm/libs/core/hw_events_interface.h

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2016, The Linux Foundation. All rights reserved.
+* Copyright (c) 2016-2017, The Linux Foundation. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are permitted
 * provided that the following conditions are met:
@@ -32,10 +32,25 @@
 
 namespace sdm {
 
+class HWEventHandler;
+
+enum HWEvent {
+  VSYNC = 0,
+  EXIT,
+  IDLE_NOTIFY,
+  CEC_READ_MESSAGE,
+  SHOW_BLANK_EVENT,
+  THERMAL_LEVEL,
+};
+
 class HWEventsInterface {
  public:
-  static DisplayError Create(int fb_num, HWEventHandler *event_handler,
+  virtual DisplayError Init(int display_type, HWEventHandler *event_handler,
-                             std::vector<const char *> *event_list, HWEventsInterface **intf);
+                            const std::vector<HWEvent> &event_list) = 0;
+  virtual DisplayError Deinit() = 0;
+
+  static DisplayError Create(int display_type, HWEventHandler *event_handler,
+                             const std::vector<HWEvent> &event_list, HWEventsInterface **intf);
   static DisplayError Destroy(HWEventsInterface *intf);
 
  protected:

sdm/libs/core/hw_info_interface.cpp

@@ -0,0 +1,62 @@
+/*
+* Copyright (c) 2017, The Linux Foundation. All rights reserved.
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions are
+* met:
+*     * Redistributions of source code must retain the above copyright
+*       notice, this list of conditions and the following disclaimer.
+*     * Redistributions in binary form must reproduce the above
+*       copyright notice, this list of conditions and the following
+*       disclaimer in the documentation and/or other materials provided
+*       with the distribution.
+*     * Neither the name of The Linux Foundation nor the names of its
+*       contributors may be used to endorse or promote products derived
+*       from this software without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+* ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <utils/utils.h>
+
+#include "hw_info_interface.h"
+#include "fb/hw_info.h"
+#ifdef COMPILE_DRM
+#include "drm/hw_info_drm.h"
+#endif
+
+#define __CLASS__ "HWInfoInterface"
+
+namespace sdm {
+
+DisplayError HWInfoInterface::Create(HWInfoInterface **intf) {
+  if (GetDriverType() == DriverType::FB) {
+    *intf = new HWInfo();
+  } else {
+#ifdef COMPILE_DRM
+    *intf = new HWInfoDRM();
+#endif
+  }
+
+  return kErrorNone;
+}
+
+DisplayError HWInfoInterface::Destroy(HWInfoInterface *intf) {
+  if (intf) {
+    delete intf;
+  }
+
+  return kErrorNone;
+}
+
+}  // namespace sdm

sdm/libs/core/hw_interface.cpp

@@ -0,0 +1,102 @@
+/*
+* Copyright (c) 2017, The Linux Foundation. All rights reserved.
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions are
+* met:
+*     * Redistributions of source code must retain the above copyright
+*       notice, this list of conditions and the following disclaimer.
+*     * Redistributions in binary form must reproduce the above
+*       copyright notice, this list of conditions and the following
+*       disclaimer in the documentation and/or other materials provided
+*       with the distribution.
+*     * Neither the name of The Linux Foundation nor the names of its
+*       contributors may be used to endorse or promote products derived
+*       from this software without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+* ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include <utils/debug.h>
+#include <utils/utils.h>
+
+#include "hw_interface.h"
+#include "fb/hw_device.h"
+#include "fb/hw_primary.h"
+#include "fb/hw_hdmi.h"
+#include "fb/hw_virtual.h"
+#ifdef COMPILE_DRM
+#include "drm/hw_device_drm.h"
+#endif
+
+#define __CLASS__ "HWInterface"
+
+namespace sdm {
+
+DisplayError HWInterface::Create(DisplayType type, HWInfoInterface *hw_info_intf,
+                                 BufferSyncHandler *buffer_sync_handler,
+                                 HWInterface **intf) {
+  DisplayError error = kErrorNone;
+  HWInterface *hw = nullptr;
+  DriverType driver_type = GetDriverType();
+
+  switch (type) {
+    case kPrimary:
+      if (driver_type == DriverType::FB) {
+        hw = new HWPrimary(buffer_sync_handler, hw_info_intf);
+      } else {
+#ifdef COMPILE_DRM
+        hw = new HWDeviceDRM(buffer_sync_handler, hw_info_intf);
+#endif
+      }
+      break;
+    case kHDMI:
+      if (driver_type == DriverType::FB) {
+        hw = new HWHDMI(buffer_sync_handler, hw_info_intf);
+      } else {
+        return kErrorNotSupported;
+      }
+      break;
+    case kVirtual:
+      if (driver_type == DriverType::FB) {
+        hw = new HWVirtual(buffer_sync_handler, hw_info_intf);
+      } else {
+        return kErrorNotSupported;
+      }
+      break;
+    default:
+      DLOGE("Undefined display type");
+      return kErrorUndefined;
+  }
+
+  error = hw->Init();
+  if (error != kErrorNone) {
+    delete hw;
+    DLOGE("Init on HW Intf type %d failed", type);
+    return error;
+  }
+  *intf = hw;
+
+  return error;
+}
+
+DisplayError HWInterface::Destroy(HWInterface *intf) {
+  if (intf) {
+    intf->Deinit();
+    delete intf;
+  }
+
+  return kErrorNone;
+}
+
+}  // namespace sdm

sdm/libs/core/hw_interface.h

@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2014 - 2016, The Linux Foundation. All rights reserved.
+* Copyright (c) 2014 - 2017, The Linux Foundation. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are permitted
 * provided that the following conditions are met:
@@ -70,6 +70,8 @@ class HWInterface {
                              BufferSyncHandler *buffer_sync_handler, HWInterface **intf);
   static DisplayError Destroy(HWInterface *intf);
 
+  virtual DisplayError Init() = 0;
+  virtual DisplayError Deinit() = 0;
   virtual DisplayError GetActiveConfig(uint32_t *active_config) = 0;
   virtual DisplayError GetNumDisplayAttributes(uint32_t *count) = 0;
   virtual DisplayError GetDisplayAttributes(uint32_t index,

sdm/libs/hwc/hwc_display.cpp

@@ -37,6 +37,7 @@
 #include <utils/debug.h>
 #include <sync/sync.h>
 #include <cutils/properties.h>
+#include <qd_utils.h>
 #include <map>
 #include <utility>
 #include <vector>
@@ -517,6 +518,7 @@ void HWCDisplay::CommitLayerParams(hwc_layer_1_t *hwc_layer, Layer *layer) {
     layer_buffer.planes[0].offset = pvt_handle->offset;
     layer_buffer.planes[0].stride = UINT32(pvt_handle->width);
     layer_buffer.size = pvt_handle->size;
+    layer_buffer.fb_id = pvt_handle->fb_id;
   }
 
   // if swapinterval property is set to 0 then close and reset the acquireFd
@@ -1072,7 +1074,7 @@ void HWCDisplay::DumpInputBuffers(hwc_display_contents_1_t *content_list) {
 
       snprintf(dump_file_name, sizeof(dump_file_name), "%s/input_layer%d_%dx%d_%s_frame%d.raw",
                dir_path, i, pvt_handle->width, pvt_handle->height,
-               GetHALPixelFormatString(pvt_handle->format), dump_frame_index_);
+               qdutils::GetHALPixelFormatString(pvt_handle->format), dump_frame_index_);
 
       FILE* fp = fopen(dump_file_name, "w+");
       if (fp) {
@@ -1128,81 +1130,6 @@ void HWCDisplay::DumpOutputBuffer(const BufferInfo& buffer_info, void *base, int
   }
 }
 
-const char *HWCDisplay::GetHALPixelFormatString(int format) {
-  switch (format) {
-  case HAL_PIXEL_FORMAT_RGBA_8888:
-    return "RGBA_8888";
-  case HAL_PIXEL_FORMAT_RGBX_8888:
-    return "RGBX_8888";
-  case HAL_PIXEL_FORMAT_RGB_888:
-    return "RGB_888";
-  case HAL_PIXEL_FORMAT_RGB_565:
-    return "RGB_565";
-  case HAL_PIXEL_FORMAT_BGR_565:
-    return "BGR_565";
-  case HAL_PIXEL_FORMAT_BGRA_8888:
-    return "BGRA_8888";
-  case HAL_PIXEL_FORMAT_RGBA_5551:
-    return "RGBA_5551";
-  case HAL_PIXEL_FORMAT_RGBA_4444:
-    return "RGBA_4444";
-  case HAL_PIXEL_FORMAT_YV12:
-    return "YV12";
-  case HAL_PIXEL_FORMAT_YCbCr_422_SP:
-    return "YCbCr_422_SP_NV16";
-  case HAL_PIXEL_FORMAT_YCrCb_420_SP:
-    return "YCrCb_420_SP_NV21";
-  case HAL_PIXEL_FORMAT_YCbCr_422_I:
-    return "YCbCr_422_I_YUY2";
-  case HAL_PIXEL_FORMAT_YCrCb_422_I:
-    return "YCrCb_422_I_YVYU";
-  case HAL_PIXEL_FORMAT_NV12_ENCODEABLE:
-    return "NV12_ENCODEABLE";
-  case HAL_PIXEL_FORMAT_YCbCr_420_SP_TILED:
-    return "YCbCr_420_SP_TILED_TILE_4x2";
-  case HAL_PIXEL_FORMAT_YCbCr_420_SP:
-    return "YCbCr_420_SP";
-  case HAL_PIXEL_FORMAT_YCrCb_420_SP_ADRENO:
-    return "YCrCb_420_SP_ADRENO";
-  case HAL_PIXEL_FORMAT_YCrCb_422_SP:
-    return "YCrCb_422_SP";
-  case HAL_PIXEL_FORMAT_R_8:
-    return "R_8";
-  case HAL_PIXEL_FORMAT_RG_88:
-    return "RG_88";
-  case HAL_PIXEL_FORMAT_INTERLACE:
-    return "INTERLACE";
-  case HAL_PIXEL_FORMAT_YCbCr_420_SP_VENUS:
-    return "YCbCr_420_SP_VENUS";
-  case HAL_PIXEL_FORMAT_YCrCb_420_SP_VENUS:
-    return "YCrCb_420_SP_VENUS";
-  case HAL_PIXEL_FORMAT_YCbCr_420_SP_VENUS_UBWC:
-    return "YCbCr_420_SP_VENUS_UBWC";
-  case HAL_PIXEL_FORMAT_RGBA_1010102:
-    return "RGBA_1010102";
-  case HAL_PIXEL_FORMAT_ARGB_2101010:
-    return "ARGB_2101010";
-  case HAL_PIXEL_FORMAT_RGBX_1010102:
-    return "RGBX_1010102";
-  case HAL_PIXEL_FORMAT_XRGB_2101010:
-    return "XRGB_2101010";
-  case HAL_PIXEL_FORMAT_BGRA_1010102:
-    return "BGRA_1010102";
-  case HAL_PIXEL_FORMAT_ABGR_2101010:
-    return "ABGR_2101010";
-  case HAL_PIXEL_FORMAT_BGRX_1010102:
-    return "BGRX_1010102";
-  case HAL_PIXEL_FORMAT_XBGR_2101010:
-    return "XBGR_2101010";
-  case HAL_PIXEL_FORMAT_YCbCr_420_P010:
-    return "YCbCr_420_P010";
-  case HAL_PIXEL_FORMAT_YCbCr_420_TP10_UBWC:
-    return "YCbCr_420_TP10_UBWC";
-  default:
-    return "Unknown_format";
-  }
-}
-
 const char *HWCDisplay::GetDisplayString() {
   switch (type_) {
   case kPrimary:

sdm/libs/hwc/hwc_display.h

@@ -192,7 +192,6 @@ class HWCDisplay : public DisplayEventHandler {
   int SetFormat(const int32_t &source, const int flags, LayerBufferFormat *target);
   void SetLayerS3DMode(const LayerBufferS3DFormat &source, uint32_t *target);
   LayerBufferFormat GetSDMFormat(const int32_t &source, const int flags);
-  const char *GetHALPixelFormatString(int format);
   const char *GetDisplayString();
   void MarkLayersForGPUBypass(hwc_display_contents_1_t *content_list);
   virtual void ApplyScanAdjustment(hwc_rect_t *display_frame);

sdm/libs/hwc2/hwc_display.cpp

@@ -27,6 +27,7 @@
 #include <utils/debug.h>
 #include <utils/formats.h>
 #include <utils/rect.h>
+#include <qd_utils.h>
 
 #include <algorithm>
 #include <map>
@@ -1164,7 +1165,7 @@ void HWCDisplay::DumpInputBuffers() {
 
       snprintf(dump_file_name, sizeof(dump_file_name), "%s/input_layer%d_%dx%d_%s_frame%d.raw",
                dir_path, i, pvt_handle->width, pvt_handle->height,
-               GetHALPixelFormatString(pvt_handle->format), dump_frame_index_);
+               qdutils::GetHALPixelFormatString(pvt_handle->format), dump_frame_index_);
 
       FILE *fp = fopen(dump_file_name, "w+");
       if (fp) {
@@ -1219,81 +1220,6 @@ void HWCDisplay::DumpOutputBuffer(const BufferInfo &buffer_info, void *base, int
   }
 }
 
-const char *HWCDisplay::GetHALPixelFormatString(int format) {
-  switch (format) {
-    case HAL_PIXEL_FORMAT_RGBA_8888:
-      return "RGBA_8888";
-    case HAL_PIXEL_FORMAT_RGBX_8888:
-      return "RGBX_8888";
-    case HAL_PIXEL_FORMAT_RGB_888:
-      return "RGB_888";
-    case HAL_PIXEL_FORMAT_RGB_565:
-      return "RGB_565";
-    case HAL_PIXEL_FORMAT_BGR_565:
-      return "BGR_565";
-    case HAL_PIXEL_FORMAT_BGRA_8888:
-      return "BGRA_8888";
-    case HAL_PIXEL_FORMAT_RGBA_5551:
-      return "RGBA_5551";
-    case HAL_PIXEL_FORMAT_RGBA_4444:
-      return "RGBA_4444";
-    case HAL_PIXEL_FORMAT_YV12:
-      return "YV12";
-    case HAL_PIXEL_FORMAT_YCbCr_422_SP:
-      return "YCbCr_422_SP_NV16";
-    case HAL_PIXEL_FORMAT_YCrCb_420_SP:
-      return "YCrCb_420_SP_NV21";
-    case HAL_PIXEL_FORMAT_YCbCr_422_I:
-      return "YCbCr_422_I_YUY2";
-    case HAL_PIXEL_FORMAT_YCrCb_422_I:
-      return "YCrCb_422_I_YVYU";
-    case HAL_PIXEL_FORMAT_NV12_ENCODEABLE:
-      return "NV12_ENCODEABLE";
-    case HAL_PIXEL_FORMAT_YCbCr_420_SP_TILED:
-      return "YCbCr_420_SP_TILED_TILE_4x2";
-    case HAL_PIXEL_FORMAT_YCbCr_420_SP:
-      return "YCbCr_420_SP";
-    case HAL_PIXEL_FORMAT_YCrCb_420_SP_ADRENO:
-      return "YCrCb_420_SP_ADRENO";
-    case HAL_PIXEL_FORMAT_YCrCb_422_SP:
-      return "YCrCb_422_SP";
-    case HAL_PIXEL_FORMAT_R_8:
-      return "R_8";
-    case HAL_PIXEL_FORMAT_RG_88:
-      return "RG_88";
-    case HAL_PIXEL_FORMAT_INTERLACE:
-      return "INTERLACE";
-    case HAL_PIXEL_FORMAT_YCbCr_420_SP_VENUS:
-      return "YCbCr_420_SP_VENUS";
-    case HAL_PIXEL_FORMAT_YCrCb_420_SP_VENUS:
-      return "YCrCb_420_SP_VENUS";
-    case HAL_PIXEL_FORMAT_YCbCr_420_SP_VENUS_UBWC:
-      return "YCbCr_420_SP_VENUS_UBWC";
-    case HAL_PIXEL_FORMAT_RGBA_1010102:
-      return "RGBA_1010102";
-    case HAL_PIXEL_FORMAT_ARGB_2101010:
-      return "ARGB_2101010";
-    case HAL_PIXEL_FORMAT_RGBX_1010102:
-      return "RGBX_1010102";
-    case HAL_PIXEL_FORMAT_XRGB_2101010:
-      return "XRGB_2101010";
-    case HAL_PIXEL_FORMAT_BGRA_1010102:
-      return "BGRA_1010102";
-    case HAL_PIXEL_FORMAT_ABGR_2101010:
-      return "ABGR_2101010";
-    case HAL_PIXEL_FORMAT_BGRX_1010102:
-      return "BGRX_1010102";
-    case HAL_PIXEL_FORMAT_XBGR_2101010:
-      return "XBGR_2101010";
-    case HAL_PIXEL_FORMAT_YCbCr_420_P010:
-      return "YCbCr_420_P010";
-    case HAL_PIXEL_FORMAT_YCbCr_420_TP10_UBWC:
-      return "YCbCr_420_TP10_UBWC";
-    default:
-      return "Unknown_format";
-  }
-}
-
 const char *HWCDisplay::GetDisplayString() {
   switch (type_) {
     case kPrimary:

sdm/libs/hwc2/hwc_display.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2016, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2014-2017, The Linux Foundation. All rights reserved.
  * Not a Contribution.
  *
  * Copyright 2015 The Android Open Source Project
@@ -212,7 +212,6 @@ class HWCDisplay : public DisplayEventHandler {
     return kErrorNotSupported;
   }
   LayerBufferFormat GetSDMFormat(const int32_t &source, const int flags);
-  const char *GetHALPixelFormatString(int format);
   const char *GetDisplayString();
   void MarkLayersForGPUBypass(void);
   void MarkLayersForClientComposition(void);

sdm/libs/hwc2/hwc_layers.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2016, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2014-2017, The Linux Foundation. All rights reserved.
  * Not a Contribution.
  *
  * Copyright 2015 The Android Open Source Project
@@ -143,6 +143,7 @@ HWC2::Error HWCLayer::SetLayerBuffer(buffer_handle_t buffer, int32_t acquire_fen
   layer_buffer->acquire_fence_fd = acquire_fence;
   layer_buffer->size = handle->size;
   layer_buffer->buffer_id = reinterpret_cast<uint64_t>(handle);
+  layer_buffer->fb_id = handle->fb_id;
 
   return HWC2::Error::None;
 }

sdm/libs/utils/utils.cpp

@@ -27,8 +27,11 @@
 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
-#include <utils/sys.h>
+#include <unistd.h>
 #include <math.h>
+#include <utils/sys.h>
+#include <utils/utils.h>
+
 #include <algorithm>
 
 #define __CLASS__ "Utils"
@@ -60,4 +63,9 @@ void CloseFd(int *fd) {
   }
 }
 
+DriverType GetDriverType() {
+    const char *fb_caps = "/sys/devices/virtual/graphics/fb0/mdp/caps";
+    // 0 - File exists
+    return Sys::access_(fb_caps, F_OK) ? DriverType::DRM : DriverType::FB;
+}
 }  // namespace sdm