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
diff --git a/libdrmutils/drm_master.h b/libdrmutils/drm_master.h
new file mode 100644
index 0000000..8c32a1b
--- /dev/null
+++ b/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__