| /* |
| * Copyright (C) 2011-2017 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 <dirent.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <inttypes.h> |
| #include <stdbool.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/epoll.h> |
| #include <sys/stat.h> |
| #include <sys/types.h> |
| #include <sys/un.h> |
| #include <time.h> |
| #include <unistd.h> |
| |
| #include <functional> |
| |
| #include <android-base/file.h> |
| |
| #include <linux/netlink.h> |
| #include <sys/socket.h> |
| |
| #include <cutils/klog.h> |
| #include <cutils/misc.h> |
| #include <cutils/properties.h> |
| #include <cutils/uevent.h> |
| #include <sys/reboot.h> |
| |
| #ifdef CHARGER_ENABLE_SUSPEND |
| #include <suspend/autosuspend.h> |
| #endif |
| |
| #include "AnimationParser.h" |
| #include "healthd_draw.h" |
| |
| #include <healthd/healthd.h> |
| |
| using namespace android; |
| |
| char* locale; |
| |
| #ifndef max |
| #define max(a, b) ((a) > (b) ? (a) : (b)) |
| #endif |
| |
| #ifndef min |
| #define min(a, b) ((a) < (b) ? (a) : (b)) |
| #endif |
| |
| #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0])) |
| |
| #define MSEC_PER_SEC (1000LL) |
| #define NSEC_PER_MSEC (1000000LL) |
| |
| #define BATTERY_UNKNOWN_TIME (2 * MSEC_PER_SEC) |
| #define POWER_ON_KEY_TIME (2 * MSEC_PER_SEC) |
| #define UNPLUGGED_SHUTDOWN_TIME (10 * MSEC_PER_SEC) |
| |
| #define LAST_KMSG_PATH "/proc/last_kmsg" |
| #define LAST_KMSG_PSTORE_PATH "/sys/fs/pstore/console-ramoops" |
| #define LAST_KMSG_MAX_SZ (32 * 1024) |
| |
| #define LOGE(x...) KLOG_ERROR("charger", x); |
| #define LOGW(x...) KLOG_WARNING("charger", x); |
| #define LOGV(x...) KLOG_DEBUG("charger", x); |
| |
| static constexpr const char* animation_desc_path = |
| "/res/values/charger/animation.txt"; |
| |
| struct key_state { |
| bool pending; |
| bool down; |
| int64_t timestamp; |
| }; |
| |
| struct charger { |
| bool have_battery_state; |
| bool charger_connected; |
| int64_t next_screen_transition; |
| int64_t next_key_check; |
| int64_t next_pwr_check; |
| |
| key_state keys[KEY_MAX + 1]; |
| |
| animation* batt_anim; |
| GRSurface* surf_unknown; |
| int boot_min_cap; |
| }; |
| |
| static const animation BASE_ANIMATION = { |
| .text_clock = |
| { |
| .pos_x = 0, |
| .pos_y = 0, |
| |
| .color_r = 255, |
| .color_g = 255, |
| .color_b = 255, |
| .color_a = 255, |
| |
| .font = nullptr, |
| }, |
| .text_percent = |
| { |
| .pos_x = 0, |
| .pos_y = 0, |
| |
| .color_r = 255, |
| .color_g = 255, |
| .color_b = 255, |
| .color_a = 255, |
| }, |
| |
| .run = false, |
| |
| .frames = nullptr, |
| .cur_frame = 0, |
| .num_frames = 0, |
| .first_frame_repeats = 2, |
| |
| .cur_cycle = 0, |
| .num_cycles = 3, |
| |
| .cur_level = 0, |
| .cur_status = BATTERY_STATUS_UNKNOWN, |
| }; |
| |
| static animation::frame default_animation_frames[] = { |
| { |
| .disp_time = 750, |
| .min_level = 0, |
| .max_level = 19, |
| .surface = NULL, |
| }, |
| { |
| .disp_time = 750, |
| .min_level = 0, |
| .max_level = 39, |
| .surface = NULL, |
| }, |
| { |
| .disp_time = 750, |
| .min_level = 0, |
| .max_level = 59, |
| .surface = NULL, |
| }, |
| { |
| .disp_time = 750, |
| .min_level = 0, |
| .max_level = 79, |
| .surface = NULL, |
| }, |
| { |
| .disp_time = 750, |
| .min_level = 80, |
| .max_level = 95, |
| .surface = NULL, |
| }, |
| { |
| .disp_time = 750, |
| .min_level = 0, |
| .max_level = 100, |
| .surface = NULL, |
| }, |
| }; |
| |
| static animation battery_animation = BASE_ANIMATION; |
| |
| static charger charger_state; |
| static healthd_config* healthd_config; |
| static android::BatteryProperties* batt_prop; |
| static std::unique_ptr<HealthdDraw> healthd_draw; |
| |
| /* current time in milliseconds */ |
| static int64_t curr_time_ms() { |
| timespec tm; |
| clock_gettime(CLOCK_MONOTONIC, &tm); |
| return tm.tv_sec * MSEC_PER_SEC + (tm.tv_nsec / NSEC_PER_MSEC); |
| } |
| |
| #define MAX_KLOG_WRITE_BUF_SZ 256 |
| |
| static void dump_last_kmsg(void) { |
| char* buf; |
| char* ptr; |
| unsigned sz = 0; |
| int len; |
| |
| LOGW("\n"); |
| LOGW("*************** LAST KMSG ***************\n"); |
| LOGW("\n"); |
| buf = (char*)load_file(LAST_KMSG_PSTORE_PATH, &sz); |
| |
| if (!buf || !sz) { |
| buf = (char*)load_file(LAST_KMSG_PATH, &sz); |
| if (!buf || !sz) { |
| LOGW("last_kmsg not found. Cold reset?\n"); |
| goto out; |
| } |
| } |
| |
| len = min(sz, LAST_KMSG_MAX_SZ); |
| ptr = buf + (sz - len); |
| |
| while (len > 0) { |
| int cnt = min(len, MAX_KLOG_WRITE_BUF_SZ); |
| char yoink; |
| char* nl; |
| |
| nl = (char*)memrchr(ptr, '\n', cnt - 1); |
| if (nl) cnt = nl - ptr + 1; |
| |
| yoink = ptr[cnt]; |
| ptr[cnt] = '\0'; |
| klog_write(6, "<4>%s", ptr); |
| ptr[cnt] = yoink; |
| |
| len -= cnt; |
| ptr += cnt; |
| } |
| |
| free(buf); |
| |
| out: |
| LOGW("\n"); |
| LOGW("************* END LAST KMSG *************\n"); |
| LOGW("\n"); |
| } |
| |
| #ifdef CHARGER_ENABLE_SUSPEND |
| static int request_suspend(bool enable) { |
| if (enable) |
| return autosuspend_enable(); |
| else |
| return autosuspend_disable(); |
| } |
| #else |
| static int request_suspend(bool /*enable*/) { |
| return 0; |
| } |
| #endif |
| |
| static void kick_animation(animation* anim) { |
| anim->run = true; |
| } |
| |
| static void reset_animation(animation* anim) { |
| anim->cur_cycle = 0; |
| anim->cur_frame = 0; |
| anim->run = false; |
| } |
| |
| static void update_screen_state(charger* charger, int64_t now) { |
| animation* batt_anim = charger->batt_anim; |
| int disp_time; |
| |
| if (!batt_anim->run || now < charger->next_screen_transition) return; |
| |
| if (healthd_draw == nullptr) { |
| if (healthd_config && healthd_config->screen_on) { |
| if (!healthd_config->screen_on(batt_prop)) { |
| LOGV("[%" PRId64 "] leave screen off\n", now); |
| batt_anim->run = false; |
| charger->next_screen_transition = -1; |
| if (charger->charger_connected) request_suspend(true); |
| return; |
| } |
| } |
| |
| healthd_draw.reset(new HealthdDraw(batt_anim)); |
| |
| #ifndef CHARGER_DISABLE_INIT_BLANK |
| healthd_draw->blank_screen(true); |
| #endif |
| } |
| |
| /* animation is over, blank screen and leave */ |
| if (batt_anim->num_cycles > 0 && batt_anim->cur_cycle == batt_anim->num_cycles) { |
| reset_animation(batt_anim); |
| charger->next_screen_transition = -1; |
| healthd_draw->blank_screen(true); |
| LOGV("[%" PRId64 "] animation done\n", now); |
| if (charger->charger_connected) request_suspend(true); |
| return; |
| } |
| |
| disp_time = batt_anim->frames[batt_anim->cur_frame].disp_time; |
| |
| /* animation starting, set up the animation */ |
| if (batt_anim->cur_frame == 0) { |
| LOGV("[%" PRId64 "] animation starting\n", now); |
| if (batt_prop) { |
| batt_anim->cur_level = batt_prop->batteryLevel; |
| batt_anim->cur_status = batt_prop->batteryStatus; |
| if (batt_prop->batteryLevel >= 0 && batt_anim->num_frames != 0) { |
| /* find first frame given current battery level */ |
| for (int i = 0; i < batt_anim->num_frames; i++) { |
| if (batt_anim->cur_level >= batt_anim->frames[i].min_level && |
| batt_anim->cur_level <= batt_anim->frames[i].max_level) { |
| batt_anim->cur_frame = i; |
| break; |
| } |
| } |
| |
| // repeat the first frame first_frame_repeats times |
| disp_time = batt_anim->frames[batt_anim->cur_frame].disp_time * |
| batt_anim->first_frame_repeats; |
| } |
| } |
| } |
| |
| /* unblank the screen on first cycle */ |
| if (batt_anim->cur_cycle == 0) healthd_draw->blank_screen(false); |
| |
| /* draw the new frame (@ cur_frame) */ |
| healthd_draw->redraw_screen(charger->batt_anim, charger->surf_unknown); |
| |
| /* if we don't have anim frames, we only have one image, so just bump |
| * the cycle counter and exit |
| */ |
| if (batt_anim->num_frames == 0 || batt_anim->cur_level < 0) { |
| LOGW("[%" PRId64 "] animation missing or unknown battery status\n", now); |
| charger->next_screen_transition = now + BATTERY_UNKNOWN_TIME; |
| batt_anim->cur_cycle++; |
| return; |
| } |
| |
| /* schedule next screen transition */ |
| charger->next_screen_transition = now + disp_time; |
| |
| /* advance frame cntr to the next valid frame only if we are charging |
| * if necessary, advance cycle cntr, and reset frame cntr |
| */ |
| if (charger->charger_connected) { |
| batt_anim->cur_frame++; |
| |
| while (batt_anim->cur_frame < batt_anim->num_frames && |
| (batt_anim->cur_level < batt_anim->frames[batt_anim->cur_frame].min_level || |
| batt_anim->cur_level > batt_anim->frames[batt_anim->cur_frame].max_level)) { |
| batt_anim->cur_frame++; |
| } |
| if (batt_anim->cur_frame >= batt_anim->num_frames) { |
| batt_anim->cur_cycle++; |
| batt_anim->cur_frame = 0; |
| |
| /* don't reset the cycle counter, since we use that as a signal |
| * in a test above to check if animation is over |
| */ |
| } |
| } else { |
| /* Stop animating if we're not charging. |
| * If we stop it immediately instead of going through this loop, then |
| * the animation would stop somewhere in the middle. |
| */ |
| batt_anim->cur_frame = 0; |
| batt_anim->cur_cycle++; |
| } |
| } |
| |
| static int set_key_callback(charger* charger, int code, int value) { |
| int64_t now = curr_time_ms(); |
| int down = !!value; |
| |
| if (code > KEY_MAX) return -1; |
| |
| /* ignore events that don't modify our state */ |
| if (charger->keys[code].down == down) return 0; |
| |
| /* only record the down even timestamp, as the amount |
| * of time the key spent not being pressed is not useful */ |
| if (down) charger->keys[code].timestamp = now; |
| charger->keys[code].down = down; |
| charger->keys[code].pending = true; |
| if (down) { |
| LOGV("[%" PRId64 "] key[%d] down\n", now, code); |
| } else { |
| int64_t duration = now - charger->keys[code].timestamp; |
| int64_t secs = duration / 1000; |
| int64_t msecs = duration - secs * 1000; |
| LOGV("[%" PRId64 "] key[%d] up (was down for %" PRId64 ".%" PRId64 "sec)\n", now, code, |
| secs, msecs); |
| } |
| |
| return 0; |
| } |
| |
| static void update_input_state(charger* charger, input_event* ev) { |
| if (ev->type != EV_KEY) return; |
| set_key_callback(charger, ev->code, ev->value); |
| } |
| |
| static void set_next_key_check(charger* charger, key_state* key, int64_t timeout) { |
| int64_t then = key->timestamp + timeout; |
| |
| if (charger->next_key_check == -1 || then < charger->next_key_check) |
| charger->next_key_check = then; |
| } |
| |
| static void process_key(charger* charger, int code, int64_t now) { |
| key_state* key = &charger->keys[code]; |
| |
| if (code == KEY_POWER) { |
| if (key->down) { |
| int64_t reboot_timeout = key->timestamp + POWER_ON_KEY_TIME; |
| if (now >= reboot_timeout) { |
| /* We do not currently support booting from charger mode on |
| all devices. Check the property and continue booting or reboot |
| accordingly. */ |
| if (property_get_bool("ro.enable_boot_charger_mode", false)) { |
| LOGW("[%" PRId64 "] booting from charger mode\n", now); |
| property_set("sys.boot_from_charger_mode", "1"); |
| } else { |
| if (charger->batt_anim->cur_level >= charger->boot_min_cap) { |
| LOGW("[%" PRId64 "] rebooting\n", now); |
| reboot(RB_AUTOBOOT); |
| } else { |
| LOGV("[%" PRId64 |
| "] ignore power-button press, battery level " |
| "less than minimum\n", |
| now); |
| } |
| } |
| } else { |
| /* if the key is pressed but timeout hasn't expired, |
| * make sure we wake up at the right-ish time to check |
| */ |
| set_next_key_check(charger, key, POWER_ON_KEY_TIME); |
| |
| /* Turn on the display and kick animation on power-key press |
| * rather than on key release |
| */ |
| kick_animation(charger->batt_anim); |
| request_suspend(false); |
| } |
| } else { |
| /* if the power key got released, force screen state cycle */ |
| if (key->pending) { |
| kick_animation(charger->batt_anim); |
| } |
| } |
| } |
| |
| key->pending = false; |
| } |
| |
| static void handle_input_state(charger* charger, int64_t now) { |
| process_key(charger, KEY_POWER, now); |
| |
| if (charger->next_key_check != -1 && now > charger->next_key_check) |
| charger->next_key_check = -1; |
| } |
| |
| static void handle_power_supply_state(charger* charger, int64_t now) { |
| if (!charger->have_battery_state) return; |
| |
| if (!charger->charger_connected) { |
| /* Last cycle would have stopped at the extreme top of battery-icon |
| * Need to show the correct level corresponding to capacity. |
| */ |
| kick_animation(charger->batt_anim); |
| request_suspend(false); |
| if (charger->next_pwr_check == -1) { |
| charger->next_pwr_check = now + UNPLUGGED_SHUTDOWN_TIME; |
| LOGW("[%" PRId64 "] device unplugged: shutting down in %" PRId64 " (@ %" PRId64 ")\n", |
| now, (int64_t)UNPLUGGED_SHUTDOWN_TIME, charger->next_pwr_check); |
| } else if (now >= charger->next_pwr_check) { |
| LOGW("[%" PRId64 "] shutting down\n", now); |
| reboot(RB_POWER_OFF); |
| } else { |
| /* otherwise we already have a shutdown timer scheduled */ |
| } |
| } else { |
| /* online supply present, reset shutdown timer if set */ |
| if (charger->next_pwr_check != -1) { |
| LOGW("[%" PRId64 "] device plugged in: shutdown cancelled\n", now); |
| kick_animation(charger->batt_anim); |
| } |
| charger->next_pwr_check = -1; |
| } |
| } |
| |
| void healthd_mode_charger_heartbeat() { |
| charger* charger = &charger_state; |
| int64_t now = curr_time_ms(); |
| |
| handle_input_state(charger, now); |
| handle_power_supply_state(charger, now); |
| |
| /* do screen update last in case any of the above want to start |
| * screen transitions (animations, etc) |
| */ |
| update_screen_state(charger, now); |
| } |
| |
| void healthd_mode_charger_battery_update(android::BatteryProperties* props) { |
| charger* charger = &charger_state; |
| |
| charger->charger_connected = |
| props->chargerAcOnline || props->chargerUsbOnline || props->chargerWirelessOnline; |
| |
| if (!charger->have_battery_state) { |
| charger->have_battery_state = true; |
| charger->next_screen_transition = curr_time_ms() - 1; |
| reset_animation(charger->batt_anim); |
| kick_animation(charger->batt_anim); |
| } |
| batt_prop = props; |
| } |
| |
| int healthd_mode_charger_preparetowait(void) { |
| charger* charger = &charger_state; |
| int64_t now = curr_time_ms(); |
| int64_t next_event = INT64_MAX; |
| int64_t timeout; |
| |
| LOGV("[%" PRId64 "] next screen: %" PRId64 " next key: %" PRId64 " next pwr: %" PRId64 "\n", |
| now, charger->next_screen_transition, charger->next_key_check, charger->next_pwr_check); |
| |
| if (charger->next_screen_transition != -1) next_event = charger->next_screen_transition; |
| if (charger->next_key_check != -1 && charger->next_key_check < next_event) |
| next_event = charger->next_key_check; |
| if (charger->next_pwr_check != -1 && charger->next_pwr_check < next_event) |
| next_event = charger->next_pwr_check; |
| |
| if (next_event != -1 && next_event != INT64_MAX) |
| timeout = max(0, next_event - now); |
| else |
| timeout = -1; |
| |
| return (int)timeout; |
| } |
| |
| static int input_callback(charger* charger, int fd, unsigned int epevents) { |
| input_event ev; |
| int ret; |
| |
| ret = ev_get_input(fd, epevents, &ev); |
| if (ret) return -1; |
| update_input_state(charger, &ev); |
| return 0; |
| } |
| |
| static void charger_event_handler(uint32_t /*epevents*/) { |
| int ret; |
| |
| ret = ev_wait(-1); |
| if (!ret) ev_dispatch(); |
| } |
| |
| animation* init_animation() { |
| bool parse_success; |
| |
| std::string content; |
| if (base::ReadFileToString(animation_desc_path, &content)) { |
| parse_success = parse_animation_desc(content, &battery_animation); |
| } else { |
| LOGW("Could not open animation description at %s\n", animation_desc_path); |
| parse_success = false; |
| } |
| |
| if (!parse_success) { |
| LOGW("Could not parse animation description. Using default animation.\n"); |
| battery_animation = BASE_ANIMATION; |
| battery_animation.animation_file.assign("charger/battery_scale"); |
| battery_animation.frames = default_animation_frames; |
| battery_animation.num_frames = ARRAY_SIZE(default_animation_frames); |
| } |
| if (battery_animation.fail_file.empty()) { |
| battery_animation.fail_file.assign("charger/battery_fail"); |
| } |
| |
| LOGV("Animation Description:\n"); |
| LOGV(" animation: %d %d '%s' (%d)\n", battery_animation.num_cycles, |
| battery_animation.first_frame_repeats, battery_animation.animation_file.c_str(), |
| battery_animation.num_frames); |
| LOGV(" fail_file: '%s'\n", battery_animation.fail_file.c_str()); |
| LOGV(" clock: %d %d %d %d %d %d '%s'\n", battery_animation.text_clock.pos_x, |
| battery_animation.text_clock.pos_y, battery_animation.text_clock.color_r, |
| battery_animation.text_clock.color_g, battery_animation.text_clock.color_b, |
| battery_animation.text_clock.color_a, battery_animation.text_clock.font_file.c_str()); |
| LOGV(" percent: %d %d %d %d %d %d '%s'\n", battery_animation.text_percent.pos_x, |
| battery_animation.text_percent.pos_y, battery_animation.text_percent.color_r, |
| battery_animation.text_percent.color_g, battery_animation.text_percent.color_b, |
| battery_animation.text_percent.color_a, battery_animation.text_percent.font_file.c_str()); |
| for (int i = 0; i < battery_animation.num_frames; i++) { |
| LOGV(" frame %.2d: %d %d %d\n", i, battery_animation.frames[i].disp_time, |
| battery_animation.frames[i].min_level, battery_animation.frames[i].max_level); |
| } |
| |
| return &battery_animation; |
| } |
| |
| void healthd_mode_charger_init(struct healthd_config* config) { |
| int ret; |
| charger* charger = &charger_state; |
| int i; |
| int epollfd; |
| |
| dump_last_kmsg(); |
| |
| LOGW("--------------- STARTING CHARGER MODE ---------------\n"); |
| |
| ret = ev_init(std::bind(&input_callback, charger, std::placeholders::_1, std::placeholders::_2)); |
| if (!ret) { |
| epollfd = ev_get_epollfd(); |
| healthd_register_event(epollfd, charger_event_handler, EVENT_WAKEUP_FD); |
| } |
| |
| animation* anim = init_animation(); |
| charger->batt_anim = anim; |
| |
| ret = res_create_display_surface(anim->fail_file.c_str(), &charger->surf_unknown); |
| if (ret < 0) { |
| LOGE("Cannot load custom battery_fail image. Reverting to built in.\n"); |
| ret = res_create_display_surface("charger/battery_fail", &charger->surf_unknown); |
| if (ret < 0) { |
| LOGE("Cannot load built in battery_fail image\n"); |
| charger->surf_unknown = NULL; |
| } |
| } |
| |
| GRSurface** scale_frames; |
| int scale_count; |
| int scale_fps; // Not in use (charger/battery_scale doesn't have FPS text |
| // chunk). We are using hard-coded frame.disp_time instead. |
| ret = res_create_multi_display_surface(anim->animation_file.c_str(), &scale_count, &scale_fps, |
| &scale_frames); |
| if (ret < 0) { |
| LOGE("Cannot load battery_scale image\n"); |
| anim->num_frames = 0; |
| anim->num_cycles = 1; |
| } else if (scale_count != anim->num_frames) { |
| LOGE("battery_scale image has unexpected frame count (%d, expected %d)\n", scale_count, |
| anim->num_frames); |
| anim->num_frames = 0; |
| anim->num_cycles = 1; |
| } else { |
| for (i = 0; i < anim->num_frames; i++) { |
| anim->frames[i].surface = scale_frames[i]; |
| } |
| } |
| ev_sync_key_state( |
| std::bind(&set_key_callback, charger, std::placeholders::_1, std::placeholders::_2)); |
| |
| charger->next_screen_transition = -1; |
| charger->next_key_check = -1; |
| charger->next_pwr_check = -1; |
| healthd_config = config; |
| charger->boot_min_cap = config->boot_min_cap; |
| } |
