display: Add HDMI CEC HAL

Implement the spec as per
hardware/libhardware/include/hardware/hdmi_cec.h

Change-Id: I02e1ba9deee1007b7e5922c363b9f5d6c6ad82a9

1 files changed, 73 insertions, 0 deletions

diff --git a/hdmi_cec/qhdmi_cec.h b/hdmi_cec/qhdmi_cec.h
new file mode 100644
index 00000000..4afd07fb
--- /dev/null
+++ b/hdmi_cec/qhdmi_cec.h
@@ -0,0 +1,73 @@
+/*
+* Copyright (c) 2014 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 QHDMI_CEC_H
+#define QHDMI_CEC_H
+
+#include <hardware/hdmi_cec.h>
+#include <utils/RefBase.h>
+
+namespace qClient {
+    class QHDMIClient;
+};
+
+namespace qhdmicec {
+
+#define SYSFS_BASE  "/sys/class/graphics/fb"
+#define MAX_PATH_LENGTH  128
+
+struct cec_callback_t {
+    // Function in HDMI service to call back on CEC messages
+    event_callback_t callback_func;
+    // This stores the object to pass back to the framework
+    void* callback_arg;
+
+};
+
+struct cec_context_t {
+    hdmi_cec_device_t device;    // Device for HW module
+    cec_callback_t callback;     // Struct storing callback object
+    bool enabled;
+    bool arc_enabled;
+    int fb_num;                  // Framebuffer node for HDMI
+    char fb_sysfs_path[MAX_PATH_LENGTH];
+    hdmi_port_info *port_info;   // HDMI port info
+
+    // Logical address is stored in an array, the index of the array is the
+    // logical address and the value in the index shows whether it is set or not
+    int logical_address[CEC_ADDR_BROADCAST];
+    int version;
+    uint32_t vendor_id;
+    android::sp<qClient::QHDMIClient> disp_client;
+};
+
+void cec_receive_message(cec_context_t *ctx, char *msg, ssize_t len);
+void cec_hdmi_hotplug(cec_context_t *ctx, int connected);
+
+}; //namespace
+#endif /* end of include guard: QHDMI_CEC_H */