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/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <errno.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <fcntl.h>
#include <dlfcn.h>
#define LOG_TAG "PowerHAL"
#include <utils/Log.h>
#include <hardware/hardware.h>
#include <hardware/power.h>
#define STATE_ON "state=1"
#define STATE_OFF "state=0"
#define STATE_HDR_ON "state=2"
#define STATE_HDR_OFF "state=3"
#define MAX_LENGTH 50
#define BOOST_SOCKET "/dev/socket/pb"
static int client_sockfd;
static struct sockaddr_un client_addr;
static int last_state = -1;
static void socket_init()
{
if (!client_sockfd) {
client_sockfd = socket(PF_UNIX, SOCK_DGRAM, 0);
if (client_sockfd < 0) {
ALOGE("%s: failed to open: %s", __func__, strerror(errno));
return;
}
memset(&client_addr, 0, sizeof(struct sockaddr_un));
client_addr.sun_family = AF_UNIX;
snprintf(client_addr.sun_path, UNIX_PATH_MAX, BOOST_SOCKET);
}
}
static void power_init(struct power_module *module)
{
ALOGI("%s", __func__);
socket_init();
}
static void sync_thread(int off)
{
int rc;
pid_t client;
char data[MAX_LENGTH];
if (client_sockfd < 0) {
ALOGE("%s: boost socket not created", __func__);
return;
}
client = getpid();
if (!off) {
snprintf(data, MAX_LENGTH, "2:%d", client);
rc = sendto(client_sockfd, data, strlen(data), 0, (const struct sockaddr *)&client_addr, sizeof(struct sockaddr_un));
} else {
snprintf(data, MAX_LENGTH, "3:%d", client);
rc = sendto(client_sockfd, data, strlen(data), 0, (const struct sockaddr *)&client_addr, sizeof(struct sockaddr_un));
}
if (rc < 0) {
ALOGE("%s: failed to send: %s", __func__, strerror(errno));
}
}
static void enc_boost(int off)
{
int rc;
pid_t client;
char data[MAX_LENGTH];
if (client_sockfd < 0) {
ALOGE("%s: boost socket not created", __func__);
return;
}
client = getpid();
if (!off) {
snprintf(data, MAX_LENGTH, "5:%d", client);
rc = sendto(client_sockfd, data, strlen(data), 0, (const struct sockaddr *)&client_addr, sizeof(struct sockaddr_un));
} else {
snprintf(data, MAX_LENGTH, "6:%d", client);
rc = sendto(client_sockfd, data, strlen(data), 0, (const struct sockaddr *)&client_addr, sizeof(struct sockaddr_un));
}
if (rc < 0) {
ALOGE("%s: failed to send: %s", __func__, strerror(errno));
}
}
static void process_video_encode_hint(void *metadata)
{
socket_init();
if (client_sockfd < 0) {
ALOGE("%s: boost socket not created", __func__);
return;
}
if (metadata) {
if (!strncmp(metadata, STATE_ON, sizeof(STATE_ON))) {
/* Video encode started */
sync_thread(1);
enc_boost(1);
} else if (!strncmp(metadata, STATE_OFF, sizeof(STATE_OFF))) {
/* Video encode stopped */
sync_thread(0);
enc_boost(0);
} else if (!strncmp(metadata, STATE_HDR_ON, sizeof(STATE_HDR_ON))) {
/* HDR usecase started */
} else if (!strncmp(metadata, STATE_HDR_OFF, sizeof(STATE_HDR_OFF))) {
/* HDR usecase stopped */
}else
return;
} else {
return;
}
}
static void touch_boost()
{
int rc;
pid_t client;
char data[MAX_LENGTH];
if (client_sockfd < 0) {
ALOGE("%s: boost socket not created", __func__);
return;
}
client = getpid();
snprintf(data, MAX_LENGTH, "1:%d", client);
rc = sendto(client_sockfd, data, strlen(data), 0, (const struct sockaddr *)&client_addr, sizeof(struct sockaddr_un));
if (rc < 0) {
ALOGE("%s: failed to send: %s", __func__, strerror(errno));
}
}
static void power_set_interactive(struct power_module *module, int on)
{
if (last_state == -1) {
last_state = on;
} else {
if (last_state == on)
return;
else
last_state = on;
}
ALOGV("%s %s", __func__, (on ? "ON" : "OFF"));
if (on) {
sync_thread(0);
touch_boost();
} else {
sync_thread(1);
}
}
static void power_hint(struct power_module *module, power_hint_t hint,
void *data) {
switch (hint) {
case POWER_HINT_INTERACTION:
ALOGV("POWER_HINT_INTERACTION");
touch_boost();
break;
#if 0
case POWER_HINT_VSYNC:
ALOGV("POWER_HINT_VSYNC %s", (data ? "ON" : "OFF"));
break;
#endif
case POWER_HINT_VIDEO_ENCODE:
process_video_encode_hint(data);
break;
default:
break;
}
}
static struct hw_module_methods_t power_module_methods = {
.open = NULL,
};
struct power_module HAL_MODULE_INFO_SYM = {
.common = {
.tag = HARDWARE_MODULE_TAG,
.module_api_version = POWER_MODULE_API_VERSION_0_2,
.hal_api_version = HARDWARE_HAL_API_VERSION,
.id = POWER_HARDWARE_MODULE_ID,
.name = "Qualcomm Power HAL",
.author = "The Android Open Source Project",
.methods = &power_module_methods,
},
.init = power_init,
.setInteractive = power_set_interactive,
.powerHint = power_hint,
};
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