| /* |
| * Copyright (C) 2011 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. |
| */ |
| |
| //#define DEBUG_UEVENTS |
| #define CHARGER_KLOG_LEVEL 6 |
| |
| #include <dirent.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <linux/input.h> |
| #include <linux/netlink.h> |
| #include <stdbool.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/poll.h> |
| #include <sys/socket.h> |
| #include <sys/stat.h> |
| #include <sys/types.h> |
| #include <sys/un.h> |
| #include <time.h> |
| #include <unistd.h> |
| |
| #include <cutils/android_reboot.h> |
| #include <cutils/klog.h> |
| #include <cutils/list.h> |
| #include <cutils/misc.h> |
| #include <cutils/uevent.h> |
| |
| #include "minui/minui.h" |
| |
| #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_MAX_SZ (32 * 1024) |
| |
| #define LOGE(x...) do { KLOG_ERROR("charger", x); } while (0) |
| #define LOGI(x...) do { KLOG_INFO("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 power_supply { |
| struct listnode list; |
| char name[256]; |
| char type[32]; |
| bool online; |
| bool valid; |
| char cap_path[PATH_MAX]; |
| }; |
| |
| struct frame { |
| const char *name; |
| int disp_time; |
| int min_capacity; |
| |
| gr_surface 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 { |
| int64_t next_screen_transition; |
| int64_t next_key_check; |
| int64_t next_pwr_check; |
| |
| struct key_state keys[KEY_MAX + 1]; |
| int uevent_fd; |
| |
| struct listnode supplies; |
| int num_supplies; |
| int num_supplies_online; |
| |
| struct animation *batt_anim; |
| gr_surface surf_unknown; |
| |
| struct power_supply *battery; |
| }; |
| |
| struct uevent { |
| const char *action; |
| const char *path; |
| const char *subsystem; |
| const char *ps_name; |
| const char *ps_type; |
| const char *ps_online; |
| }; |
| |
| static struct frame batt_anim_frames[] = { |
| { |
| .name = "charger/battery_0", |
| .disp_time = 750, |
| .min_capacity = 0, |
| }, |
| { |
| .name = "charger/battery_1", |
| .disp_time = 750, |
| .min_capacity = 20, |
| }, |
| { |
| .name = "charger/battery_2", |
| .disp_time = 750, |
| .min_capacity = 40, |
| }, |
| { |
| .name = "charger/battery_3", |
| .disp_time = 750, |
| .min_capacity = 60, |
| }, |
| { |
| .name = "charger/battery_4", |
| .disp_time = 750, |
| .min_capacity = 80, |
| }, |
| { |
| .name = "charger/battery_5", |
| .disp_time = 750, |
| .min_capacity = BATTERY_FULL_THRESH, |
| }, |
| }; |
| |
| static struct animation battery_animation = { |
| .frames = batt_anim_frames, |
| .num_frames = ARRAY_SIZE(batt_anim_frames), |
| .num_cycles = 3, |
| }; |
| |
| static struct charger charger_state = { |
| .batt_anim = &battery_animation, |
| }; |
| |
| static int char_width; |
| static int char_height; |
| |
| /* 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_fill(0, 0, gr_fb_width(), gr_fb_height()); |
| }; |
| |
| #define MAX_KLOG_WRITE_BUF_SZ 256 |
| |
| static void dump_last_kmsg(void) |
| { |
| char *buf; |
| char *ptr; |
| unsigned sz = 0; |
| int len; |
| |
| LOGI("\n"); |
| LOGI("*************** LAST KMSG ***************\n"); |
| LOGI("\n"); |
| buf = load_file(LAST_KMSG_PATH, &sz); |
| if (!buf || !sz) { |
| LOGI("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 = memrchr(ptr, '\n', cnt - 1); |
| if (nl) |
| cnt = nl - ptr + 1; |
| |
| yoink = ptr[cnt]; |
| ptr[cnt] = '\0'; |
| klog_write(6, "<6>%s", ptr); |
| ptr[cnt] = yoink; |
| |
| len -= cnt; |
| ptr += cnt; |
| } |
| |
| free(buf); |
| |
| out: |
| LOGI("\n"); |
| LOGI("************* END LAST KMSG *************\n"); |
| LOGI("\n"); |
| } |
| |
| static int read_file(const char *path, char *buf, size_t sz) |
| { |
| int fd; |
| size_t cnt; |
| |
| fd = open(path, O_RDONLY, 0); |
| if (fd < 0) |
| goto err; |
| |
| cnt = read(fd, buf, sz - 1); |
| if (cnt <= 0) |
| goto err; |
| buf[cnt] = '\0'; |
| if (buf[cnt - 1] == '\n') { |
| cnt--; |
| buf[cnt] = '\0'; |
| } |
| |
| close(fd); |
| return cnt; |
| |
| err: |
| if (fd >= 0) |
| close(fd); |
| return -1; |
| } |
| |
| static int read_file_int(const char *path, int *val) |
| { |
| char buf[32]; |
| int ret; |
| int tmp; |
| char *end; |
| |
| ret = read_file(path, buf, sizeof(buf)); |
| if (ret < 0) |
| return -1; |
| |
| tmp = strtol(buf, &end, 0); |
| if (end == buf || |
| ((end < buf+sizeof(buf)) && (*end != '\n' && *end != '\0'))) |
| goto err; |
| |
| *val = tmp; |
| return 0; |
| |
| err: |
| return -1; |
| } |
| |
| static int get_battery_capacity(struct charger *charger) |
| { |
| int ret; |
| int batt_cap = -1; |
| |
| if (!charger->battery) |
| return -1; |
| |
| ret = read_file_int(charger->battery->cap_path, &batt_cap); |
| if (ret < 0 || batt_cap > 100) { |
| batt_cap = -1; |
| } |
| |
| return batt_cap; |
| } |
| |
| static struct power_supply *find_supply(struct charger *charger, |
| const char *name) |
| { |
| struct listnode *node; |
| struct power_supply *supply; |
| |
| list_for_each(node, &charger->supplies) { |
| supply = node_to_item(node, struct power_supply, list); |
| if (!strncmp(name, supply->name, sizeof(supply->name))) |
| return supply; |
| } |
| return NULL; |
| } |
| |
| static struct power_supply *add_supply(struct charger *charger, |
| const char *name, const char *type, |
| const char *path, bool online) |
| { |
| struct power_supply *supply; |
| |
| supply = calloc(1, sizeof(struct power_supply)); |
| if (!supply) |
| return NULL; |
| |
| strlcpy(supply->name, name, sizeof(supply->name)); |
| strlcpy(supply->type, type, sizeof(supply->type)); |
| snprintf(supply->cap_path, sizeof(supply->cap_path), |
| "/sys/%s/capacity", path); |
| supply->online = online; |
| list_add_tail(&charger->supplies, &supply->list); |
| charger->num_supplies++; |
| LOGV("... added %s %s %d\n", supply->name, supply->type, online); |
| return supply; |
| } |
| |
| static void remove_supply(struct charger *charger, struct power_supply *supply) |
| { |
| if (!supply) |
| return; |
| list_remove(&supply->list); |
| charger->num_supplies--; |
| free(supply); |
| } |
| |
| static void parse_uevent(const char *msg, struct uevent *uevent) |
| { |
| uevent->action = ""; |
| uevent->path = ""; |
| uevent->subsystem = ""; |
| uevent->ps_name = ""; |
| uevent->ps_online = ""; |
| uevent->ps_type = ""; |
| |
| /* currently ignoring SEQNUM */ |
| while (*msg) { |
| #ifdef DEBUG_UEVENTS |
| LOGV("uevent str: %s\n", msg); |
| #endif |
| if (!strncmp(msg, "ACTION=", 7)) { |
| msg += 7; |
| uevent->action = msg; |
| } else if (!strncmp(msg, "DEVPATH=", 8)) { |
| msg += 8; |
| uevent->path = msg; |
| } else if (!strncmp(msg, "SUBSYSTEM=", 10)) { |
| msg += 10; |
| uevent->subsystem = msg; |
| } else if (!strncmp(msg, "POWER_SUPPLY_NAME=", 18)) { |
| msg += 18; |
| uevent->ps_name = msg; |
| } else if (!strncmp(msg, "POWER_SUPPLY_ONLINE=", 20)) { |
| msg += 20; |
| uevent->ps_online = msg; |
| } else if (!strncmp(msg, "POWER_SUPPLY_TYPE=", 18)) { |
| msg += 18; |
| uevent->ps_type = msg; |
| } |
| |
| /* advance to after the next \0 */ |
| while (*msg++) |
| ; |
| } |
| |
| LOGV("event { '%s', '%s', '%s', '%s', '%s', '%s' }\n", |
| uevent->action, uevent->path, uevent->subsystem, |
| uevent->ps_name, uevent->ps_type, uevent->ps_online); |
| } |
| |
| static void process_ps_uevent(struct charger *charger, struct uevent *uevent) |
| { |
| int online; |
| char ps_type[32]; |
| struct power_supply *supply = NULL; |
| int i; |
| bool was_online = false; |
| bool battery = false; |
| |
| if (uevent->ps_type[0] == '\0') { |
| char *path; |
| int ret; |
| |
| if (uevent->path[0] == '\0') |
| return; |
| ret = asprintf(&path, "/sys/%s/type", uevent->path); |
| if (ret <= 0) |
| return; |
| ret = read_file(path, ps_type, sizeof(ps_type)); |
| free(path); |
| if (ret < 0) |
| return; |
| } else { |
| strlcpy(ps_type, uevent->ps_type, sizeof(ps_type)); |
| } |
| |
| if (!strncmp(ps_type, "Battery", 7)) |
| battery = true; |
| |
| online = atoi(uevent->ps_online); |
| supply = find_supply(charger, uevent->ps_name); |
| if (supply) { |
| was_online = supply->online; |
| supply->online = online; |
| } |
| |
| if (!strcmp(uevent->action, "add")) { |
| if (!supply) { |
| supply = add_supply(charger, uevent->ps_name, ps_type, uevent->path, |
| online); |
| if (!supply) { |
| LOGE("cannot add supply '%s' (%s %d)\n", uevent->ps_name, |
| uevent->ps_type, online); |
| return; |
| } |
| /* only pick up the first battery for now */ |
| if (battery && !charger->battery) |
| charger->battery = supply; |
| } else { |
| LOGE("supply '%s' already exists..\n", uevent->ps_name); |
| } |
| } else if (!strcmp(uevent->action, "remove")) { |
| if (supply) { |
| if (charger->battery == supply) |
| charger->battery = NULL; |
| remove_supply(charger, supply); |
| supply = NULL; |
| } |
| } else if (!strcmp(uevent->action, "change")) { |
| if (!supply) { |
| LOGE("power supply '%s' not found ('%s' %d)\n", |
| uevent->ps_name, ps_type, online); |
| return; |
| } |
| } else { |
| return; |
| } |
| |
| /* allow battery to be managed in the supply list but make it not |
| * contribute to online power supplies. */ |
| if (!battery) { |
| if (was_online && !online) |
| charger->num_supplies_online--; |
| else if (supply && !was_online && online) |
| charger->num_supplies_online++; |
| } |
| |
| LOGI("power supply %s (%s) %s (action=%s num_online=%d num_supplies=%d)\n", |
| uevent->ps_name, ps_type, battery ? "" : online ? "online" : "offline", |
| uevent->action, charger->num_supplies_online, charger->num_supplies); |
| } |
| |
| static void process_uevent(struct charger *charger, struct uevent *uevent) |
| { |
| if (!strcmp(uevent->subsystem, "power_supply")) |
| process_ps_uevent(charger, uevent); |
| } |
| |
| #define UEVENT_MSG_LEN 1024 |
| static int handle_uevent_fd(struct charger *charger, int fd) |
| { |
| char msg[UEVENT_MSG_LEN+2]; |
| int n; |
| |
| if (fd < 0) |
| return -1; |
| |
| while (true) { |
| struct uevent uevent; |
| |
| n = uevent_kernel_multicast_recv(fd, msg, UEVENT_MSG_LEN); |
| if (n <= 0) |
| break; |
| if (n >= UEVENT_MSG_LEN) /* overflow -- discard */ |
| continue; |
| |
| msg[n] = '\0'; |
| msg[n+1] = '\0'; |
| |
| parse_uevent(msg, &uevent); |
| process_uevent(charger, &uevent); |
| } |
| |
| return 0; |
| } |
| |
| static int uevent_callback(int fd, short revents, void *data) |
| { |
| struct charger *charger = data; |
| |
| if (!(revents & POLLIN)) |
| return -1; |
| return handle_uevent_fd(charger, fd); |
| } |
| |
| /* force the kernel to regenerate the change events for the existing |
| * devices, if valid */ |
| static void do_coldboot(struct charger *charger, DIR *d, const char *event, |
| bool follow_links, int max_depth) |
| { |
| struct dirent *de; |
| int dfd, fd; |
| |
| dfd = dirfd(d); |
| |
| fd = openat(dfd, "uevent", O_WRONLY); |
| if (fd >= 0) { |
| write(fd, event, strlen(event)); |
| close(fd); |
| handle_uevent_fd(charger, charger->uevent_fd); |
| } |
| |
| while ((de = readdir(d)) && max_depth > 0) { |
| DIR *d2; |
| |
| LOGV("looking at '%s'\n", de->d_name); |
| |
| if ((de->d_type != DT_DIR && !(de->d_type == DT_LNK && follow_links)) || |
| de->d_name[0] == '.') { |
| LOGV("skipping '%s' type %d (depth=%d follow=%d)\n", |
| de->d_name, de->d_type, max_depth, follow_links); |
| continue; |
| } |
| LOGV("can descend into '%s'\n", de->d_name); |
| |
| fd = openat(dfd, de->d_name, O_RDONLY | O_DIRECTORY); |
| if (fd < 0) { |
| LOGE("cannot openat %d '%s' (%d: %s)\n", dfd, de->d_name, |
| errno, strerror(errno)); |
| continue; |
| } |
| |
| d2 = fdopendir(fd); |
| if (d2 == 0) |
| close(fd); |
| else { |
| LOGV("opened '%s'\n", de->d_name); |
| do_coldboot(charger, d2, event, follow_links, max_depth - 1); |
| closedir(d2); |
| } |
| } |
| } |
| |
| static void coldboot(struct charger *charger, const char *path, |
| const char *event) |
| { |
| char str[256]; |
| |
| LOGV("doing coldboot '%s' in '%s'\n", event, path); |
| DIR *d = opendir(path); |
| if (d) { |
| snprintf(str, sizeof(str), "%s\n", event); |
| do_coldboot(charger, d, str, true, 1); |
| closedir(d); |
| } |
| } |
| |
| 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); |
| |
| 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, gr_surface 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 name=%s min_cap=%d time=%d\n", |
| batt_anim->cur_frame, frame->name, 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 cur_frame; |
| int disp_time; |
| |
| if (!batt_anim->run || now < charger->next_screen_transition) |
| return; |
| |
| /* 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("[%lld] animation done\n", now); |
| return; |
| } |
| |
| disp_time = batt_anim->frames[batt_anim->cur_frame].disp_time; |
| |
| /* animation starting, set up the animation */ |
| if (batt_anim->cur_frame == 0) { |
| int batt_cap; |
| int ret; |
| |
| LOGV("[%lld] animation starting\n", now); |
| batt_cap = get_battery_capacity(charger); |
| if (batt_cap >= 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_cap < 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; |
| } |
| |
| batt_anim->capacity = batt_cap; |
| } |
| |
| /* 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("[%lld] 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 |
| * if necessary, advance cycle cntr, and reset frame cntr |
| */ |
| 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 |
| */ |
| } |
| } |
| |
| static void update_input_state(struct charger *charger, |
| struct input_event *ev, |
| int64_t now) |
| { |
| int down = !!ev->value; |
| |
| if (ev->type != EV_KEY || ev->code > KEY_MAX) |
| return; |
| |
| /* only record the down even timestamp, as the amount |
| * of time the key spent not being pressed is not useful */ |
| if (down) |
| charger->keys[ev->code].timestamp = now; |
| charger->keys[ev->code].down = down; |
| charger->keys[ev->code].pending = true; |
| if (down) { |
| LOGV("[%lld] key[%d] down\n", now, ev->code); |
| } else { |
| int64_t duration = now - charger->keys[ev->code].timestamp; |
| int64_t secs = duration / 1000; |
| int64_t msecs = duration - secs * 1000; |
| LOGV("[%lld] key[%d] up (was down for %lld.%lldsec)\n", now, |
| ev->code, secs, msecs); |
| } |
| } |
| |
| 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]; |
| int64_t next_key_check; |
| |
| if (code == KEY_POWER) { |
| if (key->down) { |
| int64_t reboot_timeout = key->timestamp + POWER_ON_KEY_TIME; |
| if (now >= reboot_timeout) { |
| LOGI("[%lld] rebooting\n", now); |
| android_reboot(ANDROID_RB_RESTART, 0, 0); |
| } 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); |
| } |
| } 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->num_supplies_online == 0) { |
| if (charger->next_pwr_check == -1) { |
| charger->next_pwr_check = now + UNPLUGGED_SHUTDOWN_TIME; |
| LOGI("[%lld] device unplugged: shutting down in %lld (@ %lld)\n", |
| now, UNPLUGGED_SHUTDOWN_TIME, charger->next_pwr_check); |
| } else if (now >= charger->next_pwr_check) { |
| LOGI("[%lld] 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) { |
| LOGI("[%lld] device plugged in: shutdown cancelled\n", now); |
| kick_animation(charger->batt_anim); |
| } |
| charger->next_pwr_check = -1; |
| } |
| } |
| |
| static void wait_next_event(struct charger *charger, int64_t now) |
| { |
| int64_t next_event = INT64_MAX; |
| int64_t timeout; |
| struct input_event ev; |
| int ret; |
| |
| LOGV("[%lld] next screen: %lld next key: %lld next pwr: %lld\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; |
| LOGV("[%lld] blocking (%lld)\n", now, timeout); |
| ret = ev_wait((int)timeout); |
| if (!ret) |
| ev_dispatch(); |
| } |
| |
| static int input_callback(int fd, short revents, void *data) |
| { |
| struct charger *charger = data; |
| struct input_event ev; |
| int ret; |
| |
| ret = ev_get_input(fd, revents, &ev); |
| if (ret) |
| return -1; |
| update_input_state(charger, &ev, curr_time_ms()); |
| return 0; |
| } |
| |
| static void event_loop(struct charger *charger) |
| { |
| int ret; |
| |
| while (true) { |
| int64_t now = curr_time_ms(); |
| |
| LOGV("[%lld] event_loop()\n", now); |
| 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); |
| |
| wait_next_event(charger, now); |
| } |
| } |
| |
| int main(int argc, char **argv) |
| { |
| int ret; |
| struct charger *charger = &charger_state; |
| int64_t now = curr_time_ms() - 1; |
| int fd; |
| int i; |
| |
| list_init(&charger->supplies); |
| |
| klog_init(); |
| klog_set_level(CHARGER_KLOG_LEVEL); |
| |
| dump_last_kmsg(); |
| |
| LOGI("--------------- STARTING CHARGER MODE ---------------\n"); |
| |
| gr_init(); |
| gr_font_size(&char_width, &char_height); |
| |
| ev_init(input_callback, charger); |
| |
| fd = uevent_open_socket(64*1024, true); |
| if (fd >= 0) { |
| fcntl(fd, F_SETFL, O_NONBLOCK); |
| ev_add_fd(fd, uevent_callback, charger); |
| } |
| charger->uevent_fd = fd; |
| coldboot(charger, "/sys/class/power_supply", "add"); |
| |
| ret = res_create_surface("charger/battery_fail", &charger->surf_unknown); |
| if (ret < 0) { |
| LOGE("Cannot load image\n"); |
| charger->surf_unknown = NULL; |
| } |
| |
| for (i = 0; i < charger->batt_anim->num_frames; i++) { |
| struct frame *frame = &charger->batt_anim->frames[i]; |
| |
| ret = res_create_surface(frame->name, &frame->surface); |
| if (ret < 0) { |
| LOGE("Cannot load image %s\n", frame->name); |
| /* TODO: free the already allocated surfaces... */ |
| charger->batt_anim->num_frames = 0; |
| charger->batt_anim->num_cycles = 1; |
| break; |
| } |
| } |
| |
| gr_fb_blank(true); |
| |
| charger->next_screen_transition = now - 1; |
| charger->next_key_check = -1; |
| charger->next_pwr_check = -1; |
| reset_animation(charger->batt_anim); |
| kick_animation(charger->batt_anim); |
| |
| event_loop(charger); |
| |
| return 0; |
| } |