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Naseer Ahmed72cf9762012-07-21 12:17:13 -07001/*
2 * Copyright (C) 2010 The Android Open Source Project
Saurabh Shah56f610d2012-08-07 15:27:06 -07003 * Copyright (C) 2012, The Linux Foundation. All rights reserved.
Naseer Ahmed72cf9762012-07-21 12:17:13 -07004 *
5 * Not a Contribution, Apache license notifications and license are
6 * retained for attribution purposes only.
7
8 * Licensed under the Apache License, Version 2.0 (the "License");
9 * you may not use this file except in compliance with the License.
10 * You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing, software
15 * distributed under the License is distributed on an "AS IS" BASIS,
16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17 * See the License for the specific language governing permissions and
18 * limitations under the License.
19 */
Saurabh Shah649cda62012-09-16 16:05:58 -070020#define UEVENT_DEBUG 0
Naseer Ahmed72cf9762012-07-21 12:17:13 -070021#include <hardware_legacy/uevent.h>
22#include <utils/Log.h>
23#include <sys/resource.h>
24#include <string.h>
25#include <stdlib.h>
26#include "hwc_utils.h"
Saurabh Shah56f610d2012-08-07 15:27:06 -070027#include "external.h"
Naseer Ahmed72cf9762012-07-21 12:17:13 -070028
29namespace qhwc {
30
Naseer Ahmedf8ec1622012-07-31 18:56:23 -070031const char* MSMFB_DEVICE_FB0 = "change@/devices/virtual/graphics/fb0";
32const char* MSMFB_DEVICE_FB1 = "change@/devices/virtual/graphics/fb1";
Naseer Ahmed72cf9762012-07-21 12:17:13 -070033const char* MSMFB_HDMI_NODE = "fb1";
34
35static void handle_uevent(hwc_context_t* ctx, const char* udata, int len)
36{
Naseer Ahmedf8ec1622012-07-31 18:56:23 -070037 int vsync = 0;
Naseer Ahmed72cf9762012-07-21 12:17:13 -070038 char* hdmi;
39 int64_t timestamp = 0;
40 const char *str = udata;
Naseer Ahmedf8ec1622012-07-31 18:56:23 -070041 int hdmiconnected = ctx->mExtDisplay->getExternalDisplay();
Naseer Ahmed72cf9762012-07-21 12:17:13 -070042
Naseer Ahmedf8ec1622012-07-31 18:56:23 -070043 if(!strcasestr(str, "@/devices/virtual/graphics/fb")) {
Saurabh Shah649cda62012-09-16 16:05:58 -070044 ALOGD_IF(UEVENT_DEBUG, "%s: Not Ext Disp Event ", __FUNCTION__);
Naseer Ahmed72cf9762012-07-21 12:17:13 -070045 return;
Naseer Ahmedf8ec1622012-07-31 18:56:23 -070046 }
47
48 if(hdmiconnected)
49 vsync = !strncmp(str, MSMFB_DEVICE_FB1, strlen(MSMFB_DEVICE_FB1));
50 else
51 vsync = !strncmp(str, MSMFB_DEVICE_FB0, strlen(MSMFB_DEVICE_FB0));
52
53 hdmi = strcasestr(str, MSMFB_HDMI_NODE);
Naseer Ahmed72cf9762012-07-21 12:17:13 -070054 if(vsync) {
55 str += strlen(str) + 1;
56 while(*str) {
57 if (!strncmp(str, "VSYNC=", strlen("VSYNC="))) {
58 timestamp = strtoull(str + strlen("VSYNC="), NULL, 0);
Naseer Ahmed5b6708a2012-08-02 13:46:08 -070059 //XXX: Handle vsync from multiple displays
Jesse Hall3be78d92012-08-21 15:12:23 -070060 ctx->proc->vsync(ctx->proc, (int)ctx->dpys[0], timestamp);
Naseer Ahmed72cf9762012-07-21 12:17:13 -070061 }
62 str += strlen(str) + 1;
63 if(str - udata >= len)
64 break;
65 }
Naseer Ahmedf8ec1622012-07-31 18:56:23 -070066 return;
Naseer Ahmed72cf9762012-07-21 12:17:13 -070067 }
68
69 if(hdmi) {
70 // parse HDMI events
71 // The event will be of the form:
72 // change@/devices/virtual/graphics/fb1 ACTION=change
73 // DEVPATH=/devices/virtual/graphics/fb1
74 // SUBSYSTEM=graphics HDCP_STATE=FAIL MAJOR=29
75 // for now just parsing onlin/offline info is enough
76 str = udata;
77 int connected = 0;
78 if(!(strncmp(str,"online@",strlen("online@")))) {
79 connected = 1;
Naseer Ahmed31278ad2012-07-31 19:14:54 -070080 ctx->mExtDisplay->setExternalDisplay(connected);
Naseer Ahmed72cf9762012-07-21 12:17:13 -070081 } else if(!(strncmp(str,"offline@",strlen("offline@")))) {
82 connected = 0;
Naseer Ahmed31278ad2012-07-31 19:14:54 -070083 ctx->mExtDisplay->setExternalDisplay(connected);
Naseer Ahmed72cf9762012-07-21 12:17:13 -070084 }
Naseer Ahmed72cf9762012-07-21 12:17:13 -070085 }
86
87}
88
89static void *uevent_loop(void *param)
90{
91 int len = 0;
92 static char udata[4096];
93 memset(udata, 0, sizeof(udata));
94 hwc_context_t * ctx = reinterpret_cast<hwc_context_t *>(param);
95
96 setpriority(PRIO_PROCESS, 0, HAL_PRIORITY_URGENT_DISPLAY);
97 uevent_init();
98
99 while(1) {
100 len = uevent_next_event(udata, sizeof(udata) - 2);
101 handle_uevent(ctx, udata, len);
102 }
103
104 return NULL;
105}
106
107void init_uevent_thread(hwc_context_t* ctx)
108{
109 pthread_t uevent_thread;
110 pthread_create(&uevent_thread, NULL, uevent_loop, (void*) ctx);
111}
112
113}; //namespace