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/*
* Copyright (c) 2015, 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 LOG_NIDEBUG 0
#include <errno.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <dlfcn.h>
#include <stdlib.h>
#include <pthread.h>
#include <stdbool.h>
#define LOG_TAG "QCOMPowerHAL"
#include <utils/Log.h>
#include <hardware/hardware.h>
#include <hardware/power.h>
#include "utils.h"
#include "metadata-defs.h"
#include "hint-data.h"
#include "performance.h"
#include "power-common.h"
pthread_mutex_t video_encode_lock = PTHREAD_MUTEX_INITIALIZER;
uintptr_t video_encode_hint_counter = 0;
bool video_encode_hint_should_enable = false;
bool video_encode_hint_is_enabled = false;
static int new_hint_id = DEFAULT_VIDEO_ENCODE_HINT_ID;
static int cur_hint_id = DEFAULT_VIDEO_ENCODE_HINT_ID;
static const time_t VIDEO_ENCODE_DELAY_SECONDS = 2;
static const time_t VIDEO_ENCODE_DELAY_NSECONDS = 0;
static void* video_encode_hint_function(void* arg) {
struct timespec tv = {0};
tv.tv_sec = VIDEO_ENCODE_DELAY_SECONDS;
tv.tv_nsec = VIDEO_ENCODE_DELAY_NSECONDS;
int nanosleep_ret = 0;
uintptr_t expected_counter = (uintptr_t)arg;
// delay the hint for two seconds
// the hint hotplugs the large CPUs, so this prevents the large CPUs from
// going offline until the camera has had time to startup
TEMP_FAILURE_RETRY(nanosleep(&tv, &tv));
pthread_mutex_lock(&video_encode_lock);
// check to ensure we should still turn on hint from this particular thread
// if should_enable is true but counter is different, another thread owns hint
// if should_enable is false, we've already quit the camera
if (video_encode_hint_should_enable == true && video_encode_hint_counter == expected_counter) {
/* sched and cpufreq params
A53: 4 cores online at 1.2GHz max, 960 min
A57: 4 cores online at 384 max, 384 min
*/
int resource_values[] = {0x150C, 0x1F03, 0x2303};
perform_hint_action(new_hint_id,
resource_values, sizeof(resource_values)/sizeof(resource_values[0]));
cur_hint_id = new_hint_id;
video_encode_hint_is_enabled = true;
video_encode_hint_should_enable = false;
}
pthread_mutex_unlock(&video_encode_lock);
return NULL;
}
static int display_hint_sent;
static int process_video_encode_hint(void *metadata)
{
char governor[80];
struct video_encode_metadata_t video_encode_metadata;
if (get_scaling_governor(governor, sizeof(governor)) == -1) {
ALOGE("Can't obtain scaling governor.");
return HINT_NONE;
}
/* Initialize encode metadata struct fields */
memset(&video_encode_metadata, 0, sizeof(struct video_encode_metadata_t));
video_encode_metadata.state = -1;
video_encode_metadata.hint_id = DEFAULT_VIDEO_ENCODE_HINT_ID;
if (metadata) {
if (parse_video_encode_metadata((char *)metadata, &video_encode_metadata) ==
-1) {
ALOGE("Error occurred while parsing metadata.");
return HINT_NONE;
}
} else {
return HINT_NONE;
}
if (video_encode_metadata.state == 1) {
if ((strncmp(governor, INTERACTIVE_GOVERNOR, strlen(INTERACTIVE_GOVERNOR)) == 0) &&
(strlen(governor) == strlen(INTERACTIVE_GOVERNOR))) {
pthread_t video_encode_hint_thread;
pthread_mutex_lock(&video_encode_lock);
new_hint_id = video_encode_metadata.hint_id;
if (video_encode_hint_counter < 65535) {
video_encode_hint_counter++;
} else {
video_encode_hint_counter = 0;
}
// start new thread to launch hint
video_encode_hint_should_enable = true;
if (pthread_create(&video_encode_hint_thread, NULL, video_encode_hint_function, (void*)video_encode_hint_counter) != 0) {
ALOGE("Error constructing hint thread");
video_encode_hint_should_enable = false;
pthread_mutex_unlock(&video_encode_lock);
return HINT_NONE;
}
pthread_detach(video_encode_hint_thread);
pthread_mutex_unlock(&video_encode_lock);
return HINT_HANDLED;
}
} else if (video_encode_metadata.state == 0) {
if ((strncmp(governor, INTERACTIVE_GOVERNOR, strlen(INTERACTIVE_GOVERNOR)) == 0) &&
(strlen(governor) == strlen(INTERACTIVE_GOVERNOR))) {
pthread_mutex_lock(&video_encode_lock);
video_encode_hint_should_enable = false;
if (video_encode_hint_is_enabled == true) {
undo_hint_action(cur_hint_id);
video_encode_hint_is_enabled = false;
}
pthread_mutex_unlock(&video_encode_lock);
return HINT_HANDLED;
}
}
return HINT_NONE;
}
int power_hint_override(struct power_module *module, power_hint_t hint, void *data)
{
int ret_val = HINT_NONE;
switch(hint) {
case POWER_HINT_VIDEO_ENCODE:
ret_val = process_video_encode_hint(data);
break;
default:
break;
}
return ret_val;
}
int set_interactive_override(struct power_module *module, int on)
{
char governor[80];
if (get_scaling_governor(governor, sizeof(governor)) == -1) {
ALOGE("Can't obtain scaling governor.");
return HINT_NONE;
}
if (!on) {
/* Display off */
if ((strncmp(governor, INTERACTIVE_GOVERNOR, strlen(INTERACTIVE_GOVERNOR)) == 0) &&
(strlen(governor) == strlen(INTERACTIVE_GOVERNOR))) {
// sched upmigrate = 99, sched downmigrate = 95
// keep the big cores around, but make them very hard to use
int resource_values[] = {0x4E63, 0x4F5F};
if (!display_hint_sent) {
perform_hint_action(DISPLAY_STATE_HINT_ID,
resource_values, sizeof(resource_values)/sizeof(resource_values[0]));
display_hint_sent = 1;
return HINT_HANDLED;
}
}
} else {
/* Display on */
if ((strncmp(governor, INTERACTIVE_GOVERNOR, strlen(INTERACTIVE_GOVERNOR)) == 0) &&
(strlen(governor) == strlen(INTERACTIVE_GOVERNOR))) {
undo_hint_action(DISPLAY_STATE_HINT_ID);
display_hint_sent = 0;
return HINT_HANDLED;
}
}
return HINT_NONE;
}
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