healthd: move charger executable to healthd charger mode
* Add healthd charger mode ops
* Check for executable invocation as "charger", set charger mode if so
* Incorporate charger executable as healthd charger mode
Change-Id: I4a44e7a4c3a65ae9be94491f7f498aa48d4f8a84
diff --git a/healthd/healthd_mode_charger.cpp b/healthd/healthd_mode_charger.cpp
new file mode 100644
index 0000000..fe96c86
--- /dev/null
+++ b/healthd/healthd_mode_charger.cpp
@@ -0,0 +1,679 @@
+/*
+ * 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 <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>
+
+#ifdef CHARGER_ENABLE_SUSPEND
+#include <suspend/autosuspend.h>
+#endif
+
+#include "minui/minui.h"
+
+#include "healthd.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 frame {
+ const char *name;
+ 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[] = {
+ {
+ .name = "charger/battery_0",
+ .disp_time = 750,
+ .min_capacity = 0,
+ .level_only = false,
+ .surface = NULL,
+ },
+ {
+ .name = "charger/battery_1",
+ .disp_time = 750,
+ .min_capacity = 20,
+ .level_only = false,
+ .surface = NULL,
+ },
+ {
+ .name = "charger/battery_2",
+ .disp_time = 750,
+ .min_capacity = 40,
+ .level_only = false,
+ .surface = NULL,
+ },
+ {
+ .name = "charger/battery_3",
+ .disp_time = 750,
+ .min_capacity = 60,
+ .level_only = false,
+ .surface = NULL,
+ },
+ {
+ .name = "charger/battery_4",
+ .disp_time = 750,
+ .min_capacity = 80,
+ .level_only = true,
+ .surface = NULL,
+ },
+ {
+ .name = "charger/battery_5",
+ .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;
+
+/* 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 = (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 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);
+ 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("[%lld] 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("[%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 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
+ */
+ }
+}
+
+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("[%lld] 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("[%lld] key[%d] up (was down for %lld.%lldsec)\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) {
+ 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) {
+ 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("[%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;
+ }
+}
+
+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("[%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;
+
+ 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");
+
+ gr_init();
+ gr_font_size(&char_width, &char_height);
+
+ ret = ev_init(input_callback, charger);
+ if (!ret) {
+ epollfd = ev_get_epollfd();
+ healthd_register_event(epollfd, charger_event_handler);
+ }
+
+ ret = res_create_surface("charger/battery_fail", &charger->surf_unknown);
+ if (ret < 0) {
+ LOGE("Cannot load image\n");
+ charger->surf_unknown = NULL;
+ }
+
+ charger->batt_anim = &battery_animation;
+
+ 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;
+ }
+ }
+
+ ev_sync_key_state(set_key_callback, charger);
+
+#ifndef CHARGER_DISABLE_INIT_BLANK
+ gr_fb_blank(true);
+#endif
+
+ charger->next_screen_transition = -1;
+ charger->next_key_check = -1;
+ charger->next_pwr_check = -1;
+}