diff options
| -rw-r--r-- | BoardConfig.mk | 3 | ||||
| -rw-r--r-- | power/power_ext.c | 53 | ||||
| -rw-r--r-- | rootdir/etc/init.target.rc | 8 |
3 files changed, 64 insertions, 0 deletions
diff --git a/BoardConfig.mk b/BoardConfig.mk index 29bce50..7a74ba7 100644 --- a/BoardConfig.mk +++ b/BoardConfig.mk @@ -33,6 +33,9 @@ TARGET_PROCESS_SDK_VERSION_OVERRIDE := \ # Display TARGET_SCREEN_DENSITY := 320 +# Power +TARGET_POWERHAL_SET_INTERACTIVE_EXT := $(DEVICE_PATH)/power/power_ext.c + # Kernel TARGET_KERNEL_CONFIG := merlin_defconfig diff --git a/power/power_ext.c b/power/power_ext.c new file mode 100644 index 0000000..f31350c --- /dev/null +++ b/power/power_ext.c @@ -0,0 +1,53 @@ +/* + * Copyright (C) 2021 The LineageOS 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 <stdlib.h> +#include <string.h> +#include <fcntl.h> + +#define LOG_TAG "PowerHAL_MSM8939_Ext" +#include <log/log.h> + +#define BIG_MAX_CPU_PATH "/sys/devices/system/cpu/cpu0/core_ctl/max_cpus" + +static void sysfs_write(char *path, char *s) +{ + char buf[80]; + int len; + int fd; + + if ((fd = open(path, O_WRONLY)) < 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); +} + +void power_set_interactive_ext(int on) +{ + ALOGD("%sabling big CPU cluster", on ? "En" : "Dis"); + sysfs_write(BIG_MAX_CPU_PATH, on ? "4" : "0"); +} + diff --git a/rootdir/etc/init.target.rc b/rootdir/etc/init.target.rc index 89863fb..681bb3d 100644 --- a/rootdir/etc/init.target.rc +++ b/rootdir/etc/init.target.rc @@ -91,6 +91,14 @@ on property:sys.boot_completed=1 write /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor "interactive" write /sys/devices/system/cpu/cpu0/cpufreq/interactive/io_is_busy 1 + # Bring all big cluster cores online + write /sys/devices/system/cpu/cpu1/online 1 + write /sys/devices/system/cpu/cpu2/online 1 + write /sys/devices/system/cpu/cpu3/online 1 + + # Permission required for power HAL + chown system system /sys/devices/system/cpu/cpu0/core_ctl/max_cpus + # enable governor for power cluster write /sys/devices/system/cpu/cpu4/online 1 write /sys/devices/system/cpu/cpu4/cpufreq/scaling_governor "interactive" |