| /* |
| * Copyright (C) 2011-2013 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. |
| */ |
| |
| #include <dirent.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <inttypes.h> |
| #include <linux/input.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 <sys/socket.h> |
| #include <linux/netlink.h> |
| |
| #include <batteryservice/BatteryService.h> |
| #include <cutils/android_reboot.h> |
| #include <cutils/klog.h> |
| #include <cutils/misc.h> |
| #include <cutils/uevent.h> |
| #include <cutils/properties.h> |
| |
| #ifdef CHARGER_ENABLE_SUSPEND |
| #include <suspend/autosuspend.h> |
| #endif |
| |
| #include "minui/minui.h" |
| |
| #include <healthd/healthd.h> |
| |
| 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 BATTERY_FULL_THRESH 95 |
| |
| #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...) do { KLOG_ERROR("charger", x); } while (0) |
| #define LOGW(x...) do { KLOG_WARNING("charger", x); } while (0) |
| #define LOGV(x...) do { KLOG_DEBUG("charger", x); } while (0) |
| |
| struct key_state { |
| bool pending; |
| bool down; |
| int64_t timestamp; |
| }; |
| |
| struct frame { |
| int disp_time; |
| int min_capacity; |
| bool level_only; |
| |
| GRSurface* surface; |
| }; |
| |
| struct animation { |
| bool run; |
| |
| struct frame *frames; |
| int cur_frame; |
| int num_frames; |
| |
| int cur_cycle; |
| int num_cycles; |
| |
| /* current capacity being animated */ |
| int capacity; |
| }; |
| |
| struct charger { |
| bool have_battery_state; |
| bool charger_connected; |
| int64_t next_screen_transition; |
| int64_t next_key_check; |
| int64_t next_pwr_check; |
| |
| struct key_state keys[KEY_MAX + 1]; |
| |
| struct animation *batt_anim; |
| GRSurface* surf_unknown; |
| int boot_min_cap; |
| }; |
| |
| static struct frame batt_anim_frames[] = { |
| { |
| .disp_time = 750, |
| .min_capacity = 0, |
| .level_only = false, |
| .surface = NULL, |
| }, |
| { |
| .disp_time = 750, |
| .min_capacity = 20, |
| .level_only = false, |
| .surface = NULL, |
| }, |
| { |
| .disp_time = 750, |
| .min_capacity = 40, |
| .level_only = false, |
| .surface = NULL, |
| }, |
| { |
| .disp_time = 750, |
| .min_capacity = 60, |
| .level_only = false, |
| .surface = NULL, |
| }, |
| { |
| .disp_time = 750, |
| .min_capacity = 80, |
| .level_only = true, |
| .surface = NULL, |
| }, |
| { |
| .disp_time = 750, |
| .min_capacity = BATTERY_FULL_THRESH, |
| .level_only = false, |
| .surface = NULL, |
| }, |
| }; |
| |
| static struct animation battery_animation = { |
| .run = false, |
| .frames = batt_anim_frames, |
| .cur_frame = 0, |
| .num_frames = ARRAY_SIZE(batt_anim_frames), |
| .cur_cycle = 0, |
| .num_cycles = 3, |
| .capacity = 0, |
| }; |
| |
| static struct charger charger_state; |
| static struct healthd_config *healthd_config; |
| static struct android::BatteryProperties *batt_prop; |
| static int char_width; |
| static int char_height; |
| static bool minui_inited; |
| |
| /* current time in milliseconds */ |
| static int64_t curr_time_ms(void) |
| { |
| struct timespec tm; |
| clock_gettime(CLOCK_MONOTONIC, &tm); |
| return tm.tv_sec * MSEC_PER_SEC + (tm.tv_nsec / NSEC_PER_MSEC); |
| } |
| |
| static void clear_screen(void) |
| { |
| gr_color(0, 0, 0, 255); |
| gr_clear(); |
| } |
| |
| #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 int draw_text(const char *str, int x, int y) |
| { |
| int str_len_px = gr_measure(str); |
| |
| if (x < 0) |
| x = (gr_fb_width() - str_len_px) / 2; |
| if (y < 0) |
| y = (gr_fb_height() - char_height) / 2; |
| gr_text(x, y, str, 0); |
| |
| return y + char_height; |
| } |
| |
| static void android_green(void) |
| { |
| gr_color(0xa4, 0xc6, 0x39, 255); |
| } |
| |
| /* returns the last y-offset of where the surface ends */ |
| static int draw_surface_centered(struct charger* /*charger*/, GRSurface* surface) |
| { |
| int w; |
| int h; |
| int x; |
| int y; |
| |
| w = gr_get_width(surface); |
| h = gr_get_height(surface); |
| x = (gr_fb_width() - w) / 2 ; |
| y = (gr_fb_height() - h) / 2 ; |
| |
| LOGV("drawing surface %dx%d+%d+%d\n", w, h, x, y); |
| gr_blit(surface, 0, 0, w, h, x, y); |
| return y + h; |
| } |
| |
| static void draw_unknown(struct charger *charger) |
| { |
| int y; |
| if (charger->surf_unknown) { |
| draw_surface_centered(charger, charger->surf_unknown); |
| } else { |
| android_green(); |
| y = draw_text("Charging!", -1, -1); |
| draw_text("?\?/100", -1, y + 25); |
| } |
| } |
| |
| static void draw_battery(struct charger *charger) |
| { |
| struct animation *batt_anim = charger->batt_anim; |
| struct frame *frame = &batt_anim->frames[batt_anim->cur_frame]; |
| |
| if (batt_anim->num_frames != 0) { |
| draw_surface_centered(charger, frame->surface); |
| LOGV("drawing frame #%d min_cap=%d time=%d\n", |
| batt_anim->cur_frame, frame->min_capacity, |
| frame->disp_time); |
| } |
| } |
| |
| static void redraw_screen(struct charger *charger) |
| { |
| struct animation *batt_anim = charger->batt_anim; |
| |
| clear_screen(); |
| |
| /* try to display *something* */ |
| if (batt_anim->capacity < 0 || batt_anim->num_frames == 0) |
| draw_unknown(charger); |
| else |
| draw_battery(charger); |
| gr_flip(); |
| } |
| |
| static void kick_animation(struct animation *anim) |
| { |
| anim->run = true; |
| } |
| |
| static void reset_animation(struct animation *anim) |
| { |
| anim->cur_cycle = 0; |
| anim->cur_frame = 0; |
| anim->run = false; |
| } |
| |
| static void update_screen_state(struct charger *charger, int64_t now) |
| { |
| struct animation *batt_anim = charger->batt_anim; |
| int disp_time; |
| |
| if (!batt_anim->run || now < charger->next_screen_transition) |
| return; |
| |
| if (!minui_inited) { |
| |
| 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; |
| } |
| } |
| |
| gr_init(); |
| gr_font_size(&char_width, &char_height); |
| |
| #ifndef CHARGER_DISABLE_INIT_BLANK |
| gr_fb_blank(true); |
| #endif |
| minui_inited = true; |
| } |
| |
| /* animation is over, blank screen and leave */ |
| if (batt_anim->cur_cycle == batt_anim->num_cycles) { |
| reset_animation(batt_anim); |
| charger->next_screen_transition = -1; |
| gr_fb_blank(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_prop->batteryLevel >= 0 && batt_anim->num_frames != 0) { |
| int i; |
| |
| /* find first frame given current capacity */ |
| for (i = 1; i < batt_anim->num_frames; i++) { |
| if (batt_prop->batteryLevel < batt_anim->frames[i].min_capacity) |
| break; |
| } |
| batt_anim->cur_frame = i - 1; |
| |
| /* show the first frame for twice as long */ |
| disp_time = batt_anim->frames[batt_anim->cur_frame].disp_time * 2; |
| } |
| if (batt_prop) |
| batt_anim->capacity = batt_prop->batteryLevel; |
| } |
| |
| /* unblank the screen on first cycle */ |
| if (batt_anim->cur_cycle == 0) |
| gr_fb_blank(false); |
| |
| /* draw the new frame (@ cur_frame) */ |
| redraw_screen(charger); |
| |
| /* 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->capacity < 0) { |
| LOGV("[%" 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++; |
| |
| /* if the frame is used for level-only, that is only show it when it's |
| * the current level, skip it during the animation. |
| */ |
| while (batt_anim->cur_frame < batt_anim->num_frames && |
| batt_anim->frames[batt_anim->cur_frame].level_only) |
| 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(int code, int value, void *data) |
| { |
| struct charger *charger = (struct charger *)data; |
| 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(struct charger *charger, |
| struct input_event *ev) |
| { |
| if (ev->type != EV_KEY) |
| return; |
| set_key_callback(ev->code, ev->value, charger); |
| } |
| |
| static void set_next_key_check(struct charger *charger, |
| struct 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(struct charger *charger, int code, int64_t now) |
| { |
| struct 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->capacity >= charger->boot_min_cap) { |
| LOGW("[%" PRId64 "] rebooting\n", now); |
| android_reboot(ANDROID_RB_RESTART, 0, 0); |
| } 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(struct 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(struct 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); |
| android_reboot(ANDROID_RB_POWEROFF, 0, 0); |
| } 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() |
| { |
| struct 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( |
| struct android::BatteryProperties *props) |
| { |
| struct 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) |
| { |
| struct 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(int fd, unsigned int epevents, void *data) |
| { |
| struct charger *charger = (struct charger *)data; |
| struct 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(); |
| } |
| |
| void healthd_mode_charger_init(struct healthd_config* config) |
| { |
| int ret; |
| struct charger *charger = &charger_state; |
| int i; |
| int epollfd; |
| |
| dump_last_kmsg(); |
| |
| LOGW("--------------- STARTING CHARGER MODE ---------------\n"); |
| |
| ret = ev_init(input_callback, charger); |
| if (!ret) { |
| epollfd = ev_get_epollfd(); |
| healthd_register_event(epollfd, charger_event_handler); |
| } |
| |
| ret = res_create_display_surface("charger/battery_fail", &charger->surf_unknown); |
| if (ret < 0) { |
| LOGE("Cannot load battery_fail image\n"); |
| charger->surf_unknown = NULL; |
| } |
| |
| charger->batt_anim = &battery_animation; |
| |
| 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("charger/battery_scale", &scale_count, &scale_fps, |
| &scale_frames); |
| if (ret < 0) { |
| LOGE("Cannot load battery_scale image\n"); |
| charger->batt_anim->num_frames = 0; |
| charger->batt_anim->num_cycles = 1; |
| } else if (scale_count != charger->batt_anim->num_frames) { |
| LOGE("battery_scale image has unexpected frame count (%d, expected %d)\n", |
| scale_count, charger->batt_anim->num_frames); |
| charger->batt_anim->num_frames = 0; |
| charger->batt_anim->num_cycles = 1; |
| } else { |
| for (i = 0; i < charger->batt_anim->num_frames; i++) { |
| charger->batt_anim->frames[i].surface = scale_frames[i]; |
| } |
| } |
| |
| ev_sync_key_state(set_key_callback, charger); |
| |
| 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; |
| } |
