diff options
Diffstat (limited to 'power/power_piranha.c')
| -rw-r--r-- | power/power_piranha.c | 161 |
1 files changed, 0 insertions, 161 deletions
diff --git a/power/power_piranha.c b/power/power_piranha.c deleted file mode 100644 index 1734c15..0000000 --- a/power/power_piranha.c +++ /dev/null @@ -1,161 +0,0 @@ -/* - * 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 <fcntl.h> - -#define LOG_TAG "Piranha PowerHAL" -#include <utils/Log.h> - -#include <hardware/hardware.h> -#include <hardware/power.h> - -#define BOOSTPULSE_PATH "/sys/devices/system/cpu/cpufreq/interactive/boostpulse" - -struct piranha_power_module { - struct power_module base; - pthread_mutex_t lock; - int boostpulse_fd; - int boostpulse_warned; -}; - -static void sysfs_write(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; - } - - 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); -} - -static void piranha_power_init(struct power_module *module) -{ - /* - * cpufreq interactive governor: timer 20ms, min sample 60ms, - * hispeed 700MHz at load 50%. - */ - - sysfs_write("/sys/devices/system/cpu/cpufreq/interactive/timer_rate", - "20000"); - sysfs_write("/sys/devices/system/cpu/cpufreq/interactive/min_sample_time", - "60000"); - sysfs_write("/sys/devices/system/cpu/cpufreq/interactive/hispeed_freq", - "700000"); - sysfs_write("/sys/devices/system/cpu/cpufreq/interactive/go_hispeed_load", - "50"); - sysfs_write("/sys/devices/system/cpu/cpufreq/interactive/above_hispeed_delay", - "100000"); -} - -static int boostpulse_open(struct piranha_power_module *piranha) -{ - char buf[80]; - - pthread_mutex_lock(&piranha->lock); - - if (piranha->boostpulse_fd < 0) { - piranha->boostpulse_fd = open(BOOSTPULSE_PATH, O_WRONLY); - - if (piranha->boostpulse_fd < 0) { - if (!piranha->boostpulse_warned) { - strerror_r(errno, buf, sizeof(buf)); - ALOGE("Error opening %s: %s\n", BOOSTPULSE_PATH, buf); - piranha->boostpulse_warned = 1; - } - } - } - - pthread_mutex_unlock(&piranha->lock); - return piranha->boostpulse_fd; -} - -static void piranha_power_set_interactive(struct power_module *module, int on) -{ - /* - * Lower maximum frequency when screen is off. CPU 0 and 1 share a - * cpufreq policy. - */ - - sysfs_write("/sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq", - on ? "1008000" : "600000"); -} - -static void piranha_power_hint(struct power_module *module, power_hint_t hint, - void *data) -{ - struct piranha_power_module *piranha = (struct piranha_power_module *) module; - char buf[80]; - int len; - - switch (hint) { - case POWER_HINT_INTERACTION: - if (boostpulse_open(piranha) >= 0) { - len = write(piranha->boostpulse_fd, "1", 1); - - if (len < 0) { - strerror_r(errno, buf, sizeof(buf)); - ALOGE("Error writing to %s: %s\n", BOOSTPULSE_PATH, buf); - } - } - break; - - case POWER_HINT_VSYNC: - break; - - default: - break; - } -} - -static struct hw_module_methods_t power_module_methods = { - .open = NULL, -}; - -struct piranha_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: "Piranha Power HAL", - author: "The Android Open Source Project", - methods: &power_module_methods, - }, - - init: piranha_power_init, - setInteractive: piranha_power_set_interactive, - powerHint: piranha_power_hint, - }, - - lock: PTHREAD_MUTEX_INITIALIZER, - boostpulse_fd: -1, - boostpulse_warned: 0, -}; |