diff options
Diffstat (limited to 'healthd/healthd_mode_charger.cpp')
| -rw-r--r-- | healthd/healthd_mode_charger.cpp | 720 |
1 files changed, 720 insertions, 0 deletions
diff --git a/healthd/healthd_mode_charger.cpp b/healthd/healthd_mode_charger.cpp new file mode 100644 index 0000000..394feb8 --- /dev/null +++ b/healthd/healthd_mode_charger.cpp @@ -0,0 +1,720 @@ +/* + * 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.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 SCREEN_ON_BATTERY_THRESH 0 + +#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 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 frame { + int disp_time; + int min_capacity; + bool level_only; + + 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 { + bool have_battery_state; + bool charger_connected; + int capacity; + 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; + gr_surface surf_unknown; +}; + +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 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; + + LOGI("\n"); + LOGI("*************** LAST KMSG ***************\n"); + LOGI("\n"); + buf = (char *)load_file(LAST_KMSG_PSTORE_PATH, &sz); + + if (!buf || !sz) { + buf = (char *)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 = (char *)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 get_battery_capacity() +{ + return charger_state.capacity; +} + +#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*/, 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 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 cur_frame; + int disp_time; + + if (!batt_anim->run || now < charger->next_screen_transition) + return; + + if (!minui_inited) { + int batt_cap = get_battery_capacity(); + + if (batt_cap < SCREEN_ON_BATTERY_THRESH) { + LOGV("[%" PRId64 "] level %d, leave screen off\n", now, batt_cap); + 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) { + int batt_cap; + int ret; + + LOGV("[%" PRId64 "] animation starting\n", now); + batt_cap = get_battery_capacity(); + 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("[%" 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]; + 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) { + /* 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)) { + LOGI("[%" PRId64 "] booting from charger mode\n", now); + property_set("sys.boot_from_charger_mode", "1"); + } else { + LOGI("[%" PRId64 "] 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) { + request_suspend(false); + 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) { + request_suspend(false); + if (charger->next_pwr_check == -1) { + charger->next_pwr_check = now + UNPLUGGED_SHUTDOWN_TIME; + LOGI("[%" 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) { + LOGI("[%" 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) { + LOGI("[%" 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(); + int ret; + + 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; + charger->capacity = props->batteryLevel; + + 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); + } +} + +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; + struct input_event ev; + int ret; + + 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(); + + LOGI("--------------- 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; + + gr_surface* scale_frames; + int scale_count; + ret = res_create_multi_display_surface("charger/battery_scale", &scale_count, &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; +} |