| /* |
| * Copyright (C) 2013 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. |
| * |
| * Based on the FlounderPowerHAL |
| */ |
| |
| #include <dirent.h> |
| #include <errno.h> |
| #include <string.h> |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <fcntl.h> |
| #include <unistd.h> |
| #include <stdlib.h> |
| #include <stdbool.h> |
| #include <pthread.h> |
| #include <semaphore.h> |
| #include <cutils/properties.h> |
| //#define LOG_NDEBUG 0 |
| |
| #define LOG_TAG "HiKeyPowerHAL" |
| #include <utils/Log.h> |
| |
| #include <hardware/hardware.h> |
| #include <hardware/power.h> |
| |
| #define SCHEDTUNE_BOOST_PATH "/dev/stune/top-app/schedtune.boost" |
| #define SCHEDTUNE_BOOST_VAL_PROP "ro.config.schetune.touchboost.value" |
| #define SCHEDTUNE_BOOST_TIME_PROP "ro.config.schetune.touchboost.time_ns" |
| |
| #define SCHEDTUNE_BOOST_VAL_DEFAULT "40" |
| |
| char schedtune_boost_norm[PROPERTY_VALUE_MAX] = "10"; |
| char schedtune_boost_interactive[PROPERTY_VALUE_MAX] = SCHEDTUNE_BOOST_VAL_DEFAULT; |
| long long schedtune_boost_time_ns = 1000000000LL; |
| |
| #define INTERACTIVE_BOOSTPULSE_PATH "/sys/devices/system/cpu/cpufreq/interactive/boostpulse" |
| #define INTERACTIVE_IO_IS_BUSY_PATH "/sys/devices/system/cpu/cpufreq/interactive/io_is_busy" |
| #define CPU_MAX_FREQ_PATH "/sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq" |
| #define LOW_POWER_MAX_FREQ "729000" |
| #define NORMAL_MAX_FREQ "1200000" |
| #define SVELTE_PROP "ro.boot.svelte" |
| #define SVELTE_MAX_FREQ_PROP "ro.config.svelte.max_cpu_freq" |
| #define SVELTE_LOW_POWER_MAX_FREQ_PROP "ro.config.svelte.low_power_max_cpu_freq" |
| |
| struct hikey_power_module { |
| struct power_module base; |
| pthread_mutex_t lock; |
| /* interactive gov boost values */ |
| int boostpulse_fd; |
| int boostpulse_warned; |
| /* EAS schedtune values */ |
| int schedtune_boost_fd; |
| long long deboost_time; |
| sem_t signal_lock; |
| }; |
| |
| static bool low_power_mode = false; |
| |
| static char *max_cpu_freq = NORMAL_MAX_FREQ; |
| static char *low_power_max_cpu_freq = LOW_POWER_MAX_FREQ; |
| |
| |
| #define container_of(addr, struct_name, field_name) \ |
| ((struct_name *)((char *)(addr) - offsetof(struct_name, field_name))) |
| |
| |
| static int sysfs_write(const char *path, char *s) |
| { |
| char buf[80]; |
| int len; |
| int fd = open(path, O_WRONLY); |
| |
| if (fd < 0) { |
| strerror_r(errno, buf, sizeof(buf)); |
| ALOGE("Error opening %s: %s\n", path, buf); |
| return fd; |
| } |
| |
| len = write(fd, s, strlen(s)); |
| if (len < 0) { |
| strerror_r(errno, buf, sizeof(buf)); |
| ALOGE("Error writing to %s: %s\n", path, buf); |
| } |
| |
| close(fd); |
| return len; |
| } |
| |
| #define NSEC_PER_SEC 1000000000LL |
| static long long gettime_ns(void) |
| { |
| struct timespec ts; |
| |
| clock_gettime(CLOCK_MONOTONIC, &ts); |
| return ts.tv_sec * NSEC_PER_SEC + ts.tv_nsec; |
| } |
| |
| static void nanosleep_ns(long long ns) |
| { |
| struct timespec ts; |
| ts.tv_sec = ns/NSEC_PER_SEC; |
| ts.tv_nsec = ns%NSEC_PER_SEC; |
| nanosleep(&ts, NULL); |
| } |
| |
| /*[interactive cpufreq gov funcs]*********************************************/ |
| static void interactive_power_init(struct hikey_power_module __unused *hikey) |
| { |
| int32_t is_svelte = property_get_int32(SVELTE_PROP, 0); |
| |
| if (sysfs_write("/sys/devices/system/cpu/cpufreq/interactive/timer_rate", |
| "20000") < 0) |
| return; |
| sysfs_write("/sys/devices/system/cpu/cpufreq/interactive/timer_slack", |
| "20000"); |
| sysfs_write("/sys/devices/system/cpu/cpufreq/interactive/min_sample_time", |
| "80000"); |
| sysfs_write("/sys/devices/system/cpu/cpufreq/interactive/hispeed_freq", |
| "1200000"); |
| sysfs_write("/sys/devices/system/cpu/cpufreq/interactive/go_hispeed_load", |
| "99"); |
| sysfs_write("/sys/devices/system/cpu/cpufreq/interactive/target_loads", |
| "65 729000:75 960000:85"); |
| sysfs_write("/sys/devices/system/cpu/cpufreq/interactive/above_hispeed_delay", |
| "20000"); |
| sysfs_write("/sys/devices/system/cpu/cpufreq/interactive/boostpulse_duration", |
| "1000000"); |
| sysfs_write("/sys/devices/system/cpu/cpufreq/interactive/io_is_busy", "0"); |
| |
| if (is_svelte) { |
| char prop_buffer[PROPERTY_VALUE_MAX]; |
| int len = property_get(SVELTE_MAX_FREQ_PROP, prop_buffer, |
| LOW_POWER_MAX_FREQ); |
| |
| max_cpu_freq = strndup(prop_buffer, len); |
| len = property_get(SVELTE_LOW_POWER_MAX_FREQ_PROP, prop_buffer, |
| LOW_POWER_MAX_FREQ); |
| low_power_max_cpu_freq = strndup(prop_buffer, len); |
| } |
| } |
| |
| static void power_set_interactive(struct power_module __unused *module, int on) |
| { |
| ALOGV("power_set_interactive: %d\n", on); |
| |
| /* |
| * Lower maximum frequency when screen is off. |
| */ |
| sysfs_write(CPU_MAX_FREQ_PATH, |
| (!on || low_power_mode) ? low_power_max_cpu_freq : max_cpu_freq); |
| sysfs_write(INTERACTIVE_IO_IS_BUSY_PATH, on ? "1" : "0"); |
| ALOGV("power_set_interactive: %d done\n", on); |
| } |
| |
| static int interactive_boostpulse(struct hikey_power_module *hikey) |
| { |
| char buf[80]; |
| int len; |
| |
| if (hikey->boostpulse_fd < 0) |
| hikey->boostpulse_fd = open(INTERACTIVE_BOOSTPULSE_PATH, O_WRONLY); |
| |
| if (hikey->boostpulse_fd < 0) { |
| if (!hikey->boostpulse_warned) { |
| strerror_r(errno, buf, sizeof(buf)); |
| ALOGE("Error opening %s: %s\n", INTERACTIVE_BOOSTPULSE_PATH, |
| buf); |
| hikey->boostpulse_warned = 1; |
| } |
| return hikey->boostpulse_fd; |
| } |
| |
| len = write(hikey->boostpulse_fd, "1", 1); |
| if (len < 0) { |
| strerror_r(errno, buf, sizeof(buf)); |
| ALOGE("Error writing to %s: %s\n", |
| INTERACTIVE_BOOSTPULSE_PATH, buf); |
| return -1; |
| } |
| return 0; |
| } |
| |
| /*[schedtune functions]*******************************************************/ |
| |
| int schedtune_sysfs_boost(struct hikey_power_module *hikey, char* booststr) |
| { |
| char buf[80]; |
| int len; |
| |
| if (hikey->schedtune_boost_fd < 0) |
| return hikey->schedtune_boost_fd; |
| |
| len = write(hikey->schedtune_boost_fd, booststr, strlen(booststr)); |
| if (len < 0) { |
| strerror_r(errno, buf, sizeof(buf)); |
| ALOGE("Error writing to %s: %s\n", SCHEDTUNE_BOOST_PATH, buf); |
| } |
| return len; |
| } |
| |
| static void* schedtune_deboost_thread(void* arg) |
| { |
| struct hikey_power_module *hikey = (struct hikey_power_module *)arg; |
| |
| while(1) { |
| sem_wait(&hikey->signal_lock); |
| while(1) { |
| long long now, sleeptime = 0; |
| |
| pthread_mutex_lock(&hikey->lock); |
| now = gettime_ns(); |
| if (hikey->deboost_time > now) { |
| sleeptime = hikey->deboost_time - now; |
| pthread_mutex_unlock(&hikey->lock); |
| nanosleep_ns(sleeptime); |
| continue; |
| } |
| |
| schedtune_sysfs_boost(hikey, schedtune_boost_norm); |
| hikey->deboost_time = 0; |
| pthread_mutex_unlock(&hikey->lock); |
| break; |
| } |
| } |
| return NULL; |
| } |
| |
| static int schedtune_boost(struct hikey_power_module *hikey) |
| { |
| long long now; |
| |
| if (hikey->schedtune_boost_fd < 0) |
| return hikey->schedtune_boost_fd; |
| |
| now = gettime_ns(); |
| if (!hikey->deboost_time) { |
| schedtune_sysfs_boost(hikey, schedtune_boost_interactive); |
| sem_post(&hikey->signal_lock); |
| } |
| hikey->deboost_time = now + schedtune_boost_time_ns; |
| |
| return 0; |
| } |
| |
| static void schedtune_power_init(struct hikey_power_module *hikey) |
| { |
| char buf[50]; |
| pthread_t tid; |
| |
| hikey->deboost_time = 0; |
| sem_init(&hikey->signal_lock, 0, 1); |
| |
| hikey->schedtune_boost_fd = open(SCHEDTUNE_BOOST_PATH, O_RDWR); |
| if (hikey->schedtune_boost_fd < 0) { |
| strerror_r(errno, buf, sizeof(buf)); |
| ALOGE("Error opening %s: %s\n", SCHEDTUNE_BOOST_PATH, buf); |
| return; |
| } |
| |
| schedtune_boost_time_ns = property_get_int64(SCHEDTUNE_BOOST_TIME_PROP, |
| 1000000000LL); |
| property_get(SCHEDTUNE_BOOST_VAL_PROP, schedtune_boost_interactive, |
| SCHEDTUNE_BOOST_VAL_DEFAULT); |
| |
| if (hikey->schedtune_boost_fd >= 0) { |
| size_t len = read(hikey->schedtune_boost_fd, schedtune_boost_norm, |
| PROPERTY_VALUE_MAX); |
| if (len <= 0) |
| ALOGE("Error reading normal boost value\n"); |
| else if (schedtune_boost_norm[len] == '\n') |
| schedtune_boost_norm[len] = '\0'; |
| |
| } |
| |
| ALOGV("Starting with schedtune boost norm: %s touchboost: %s and boosttime: %lld\n", |
| schedtune_boost_norm, schedtune_boost_interactive, schedtune_boost_time_ns); |
| |
| pthread_create(&tid, NULL, schedtune_deboost_thread, hikey); |
| } |
| |
| /*[generic functions]*********************************************************/ |
| static void hikey_power_init(struct power_module __unused *module) |
| { |
| struct hikey_power_module *hikey = container_of(module, |
| struct hikey_power_module, base); |
| interactive_power_init(hikey); |
| schedtune_power_init(hikey); |
| } |
| |
| static void hikey_hint_interaction(struct hikey_power_module *mod) |
| { |
| /* Try interactive cpufreq boosting first */ |
| if(!interactive_boostpulse(mod)) |
| return; |
| /* Then try EAS schedtune boosting */ |
| if(!schedtune_boost(mod)) |
| return; |
| } |
| |
| static void hikey_power_hint(struct power_module *module, power_hint_t hint, |
| void *data) |
| { |
| struct hikey_power_module *hikey = container_of(module, |
| struct hikey_power_module, base); |
| |
| pthread_mutex_lock(&hikey->lock); |
| switch (hint) { |
| case POWER_HINT_INTERACTION: |
| hikey_hint_interaction(hikey); |
| break; |
| |
| case POWER_HINT_VSYNC: |
| break; |
| |
| case POWER_HINT_LOW_POWER: |
| if (data) { |
| sysfs_write(CPU_MAX_FREQ_PATH, low_power_max_cpu_freq); |
| } else { |
| sysfs_write(CPU_MAX_FREQ_PATH, max_cpu_freq); |
| } |
| low_power_mode = data; |
| break; |
| |
| default: |
| break; |
| } |
| pthread_mutex_unlock(&hikey->lock); |
| } |
| |
| static void set_feature(struct power_module *module, feature_t feature, int state) |
| { |
| struct hikey_power_module *hikey = container_of(module, |
| struct hikey_power_module, base); |
| switch (feature) { |
| default: |
| ALOGW("Error setting the feature %d and state %d, it doesn't exist\n", |
| feature, state); |
| break; |
| } |
| } |
| |
| static int power_open(const hw_module_t* __unused module, const char* name, |
| hw_device_t** device) |
| { |
| int retval = 0; /* 0 is ok; -1 is error */ |
| ALOGD("%s: enter; name=%s", __FUNCTION__, name); |
| |
| if (strcmp(name, POWER_HARDWARE_MODULE_ID) == 0) { |
| power_module_t *dev = (power_module_t *)calloc(1, |
| sizeof(power_module_t)); |
| |
| if (dev) { |
| /* Common hw_device_t fields */ |
| dev->common.tag = HARDWARE_DEVICE_TAG; |
| dev->common.module_api_version = POWER_MODULE_API_VERSION_0_5; |
| dev->common.hal_api_version = HARDWARE_HAL_API_VERSION; |
| |
| dev->init = hikey_power_init; |
| dev->powerHint = hikey_power_hint; |
| dev->setInteractive = power_set_interactive; |
| dev->setFeature = set_feature; |
| |
| *device = (hw_device_t*)dev; |
| } else |
| retval = -ENOMEM; |
| } else { |
| retval = -EINVAL; |
| } |
| |
| ALOGD("%s: exit %d", __FUNCTION__, retval); |
| return retval; |
| } |
| |
| static struct hw_module_methods_t power_module_methods = { |
| .open = power_open, |
| }; |
| |
| struct hikey_power_module HAL_MODULE_INFO_SYM = { |
| .base = { |
| .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 = "HiKey Power HAL", |
| .author = "The Android Open Source Project", |
| .methods = &power_module_methods, |
| }, |
| |
| .init = hikey_power_init, |
| .setInteractive = power_set_interactive, |
| .powerHint = hikey_power_hint, |
| .setFeature = set_feature, |
| }, |
| |
| .lock = PTHREAD_MUTEX_INITIALIZER, |
| .boostpulse_fd = -1, |
| .boostpulse_warned = 0, |
| }; |