| /* |
| * 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; |
| } |
