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power-8998.c
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power-8998.c
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/*
* Copyright (c) 2016-2017, 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.
*/
#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 <unistd.h>
#define LOG_TAG "QTI PowerHAL"
#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"
#include "powerhintparser.h"
#define CHECK_HANDLE(x) ((x)>0)
#define NUM_PERF_MODES 3
typedef enum {
NORMAL_MODE = 0,
SUSTAINED_MODE = 1,
VR_MODE = 2,
VR_SUSTAINED_MODE = (SUSTAINED_MODE|VR_MODE),
INVALID_MODE = 0xFF
}perf_mode_type_t;
typedef struct perf_mode {
perf_mode_type_t type;
int perf_hint_id;
}perf_mode_t;
perf_mode_t perf_modes[NUM_PERF_MODES] = { { SUSTAINED_MODE, SUSTAINED_PERF_HINT },
{ VR_MODE, VR_MODE_HINT },
{ VR_SUSTAINED_MODE, VR_MODE_SUSTAINED_PERF_HINT } };
static pthread_mutex_t perf_mode_switch_lock = PTHREAD_MUTEX_INITIALIZER;
static int current_mode = NORMAL_MODE;
static inline int get_perfd_hint_id(perf_mode_type_t type) {
int i;
for(i=0; i<NUM_PERF_MODES; i++) {
if (perf_modes[i].type == type) {
ALOGD("Hint id is 0x%x for mode 0x%x", perf_modes[i].perf_hint_id, type);
return perf_modes[i].perf_hint_id;
}
}
ALOGD("Couldn't find the hint for mode 0x%x", type);
return 0;
}
static int switch_mode(perf_mode_type_t mode) {
int hint_id = 0;
static int perfd_mode_handle = -1;
// release existing mode if any
if (CHECK_HANDLE(perfd_mode_handle)) {
ALOGD("Releasing handle 0x%x", perfd_mode_handle);
release_request(perfd_mode_handle);
perfd_mode_handle = -1;
}
// switch to a perf mode
hint_id = get_perfd_hint_id(mode);
if(hint_id != 0) {
perfd_mode_handle = perf_hint_enable(hint_id, 0);
if (!CHECK_HANDLE(perfd_mode_handle)) {
ALOGE("Failed perf_hint_interaction for mode: 0x%x", mode);
return -1;
}
ALOGD("Acquired handle 0x%x", perfd_mode_handle);
}
return 0;
}
static int process_perf_hint(void *data, perf_mode_type_t mode) {
pthread_mutex_lock(&perf_mode_switch_lock);
// enable
if (data){
ALOGI("Enable request for mode: 0x%x", mode);
// check if mode is current mode
if ( current_mode & mode ) {
pthread_mutex_unlock(&perf_mode_switch_lock);
ALOGD("Mode 0x%x already enabled", mode);
return HINT_HANDLED;
}
// enable requested mode
if ( 0 != switch_mode(current_mode | mode)) {
pthread_mutex_unlock(&perf_mode_switch_lock);
ALOGE("Couldn't enable mode 0x%x", mode);
return HINT_NONE;
}
current_mode |= mode;
ALOGI("Current mode is 0x%x", current_mode);
// disable
} else {
ALOGI("Disable request for mode: 0x%x", mode);
// check if mode is enabled
if ( !(current_mode & mode) ) {
pthread_mutex_unlock(&perf_mode_switch_lock);
ALOGD("Mode 0x%x already disabled", mode);
return HINT_HANDLED;
}
//disable requested mode
if ( 0 != switch_mode(current_mode & ~mode)) {
pthread_mutex_unlock(&perf_mode_switch_lock);
ALOGE("Couldn't disable mode 0x%x", mode);
return HINT_NONE;
}
current_mode &= ~mode;
ALOGI("Current mode is 0x%x", current_mode);
}
pthread_mutex_unlock(&perf_mode_switch_lock);
return HINT_HANDLED;
}
static int process_video_encode_hint(void *metadata)
{
char governor[80];
struct video_encode_metadata_t video_encode_metadata;
static int video_encode_handle = 0;
if(!metadata)
return HINT_NONE;
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;
if (parse_video_encode_metadata((char *)metadata, &video_encode_metadata) ==
-1) {
ALOGE("Error occurred while parsing metadata.");
return HINT_NONE;
}
if (video_encode_metadata.state == 1) {
if (is_interactive_governor(governor)) {
video_encode_handle = perf_hint_enable(
VIDEO_ENCODE_HINT, 0);
return HINT_HANDLED;
}
} else if (video_encode_metadata.state == 0) {
if (is_interactive_governor(governor)) {
release_request(video_encode_handle);
ALOGI("Video Encode hint stop");
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;
case POWER_HINT_SUSTAINED_PERFORMANCE:
ret_val = process_perf_hint(data, SUSTAINED_MODE);
break;
case POWER_HINT_VR_MODE:
ret_val = process_perf_hint(data, VR_MODE);
break;
case POWER_HINT_INTERACTION:
pthread_mutex_lock(&perf_mode_switch_lock);
if (current_mode != NORMAL_MODE) {
ret_val = HINT_HANDLED;
}
pthread_mutex_unlock(&perf_mode_switch_lock);
break;
default:
break;
}
return ret_val;
}
int set_interactive_override(struct power_module *module, int on)
{
return HINT_HANDLED; /* Don't excecute this code path, not in use */
}