cm: Add custom off-mode charging screen
* Moving this to open-source from CyanogenOS :)
* Thanks to Chao Chen, Ethan Chen, Pat Erley, Scott Mertz,
and Keith Mok for various contributions to this.
Change-Id: If79f9c279668d14ee0cde62889bb09e7185ef08c
diff --git a/charger/healthd_board_cm.cpp b/charger/healthd_board_cm.cpp
new file mode 100644
index 0000000..c5aa3e6
--- /dev/null
+++ b/charger/healthd_board_cm.cpp
@@ -0,0 +1,374 @@
+/*
+ * Copyright (C) 2016 The CyanogenMod 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 <errno.h>
+#include <fcntl.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <time.h>
+#include <unistd.h>
+
+#include <cutils/android_reboot.h>
+#include <cutils/klog.h>
+#include <cutils/misc.h>
+#include <cutils/uevent.h>
+#include <cutils/properties.h>
+
+#include <pthread.h>
+#include <linux/android_alarm.h>
+#include <sys/timerfd.h>
+#include <linux/rtc.h>
+
+#include "healthd.h"
+#include "minui/minui.h"
+
+#define LOGE(x...) do { KLOG_ERROR("charger", x); } while (0)
+#define LOGW(x...) do { KLOG_WARNING("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 frame {
+ int min_capacity;
+ GRSurface *surface;
+};
+
+struct animation {
+ struct frame *frames;
+ int cur_frame;
+ int num_frames;
+};
+
+static struct animation anim = {
+ .frames = NULL,
+ .cur_frame = 0,
+ .num_frames = 0,
+};
+
+static bool font_inited;
+
+static int draw_surface_centered(GRSurface* surface)
+{
+ int w, h, x, y;
+
+ w = gr_get_width(surface);
+ h = gr_get_height(surface);
+ x = (gr_fb_width() - w) / 2 ;
+ y = (gr_fb_height() - h) / 2 ;
+
+ gr_blit(surface, 0, 0, w, h, x, y);
+ return y + h;
+}
+
+#define STR_LEN 64
+static void draw_capacity(int capacity)
+{
+ struct frame *f = &anim.frames[0];
+ int w = gr_get_width(f->surface);
+ int h = gr_get_height(f->surface);
+ int x = (gr_fb_width() - w) / 2 ;
+ int y = (gr_fb_height() + h) / 2;
+
+ char cap_str[STR_LEN];
+ snprintf(cap_str, (STR_LEN - 1), "%d%%", capacity);
+ gr_color(255, 255, 255, 255);
+ gr_text(x, y * 1.05, cap_str, 0);
+}
+
+#ifdef QCOM_HARDWARE
+enum alarm_time_type {
+ ALARM_TIME,
+ RTC_TIME,
+};
+
+/*
+ * shouldn't be changed after
+ * reading from alarm register
+ */
+static time_t alm_secs;
+
+static int alarm_get_time(enum alarm_time_type time_type,
+ time_t *secs)
+{
+ struct tm tm;
+ unsigned int cmd;
+ int rc, fd = -1;
+
+ if (!secs)
+ return -1;
+
+ fd = open("/dev/rtc0", O_RDONLY);
+ if (fd < 0) {
+ LOGE("Can't open rtc devfs node\n");
+ return -1;
+ }
+
+ switch (time_type) {
+ case ALARM_TIME:
+ cmd = RTC_ALM_READ;
+ break;
+ case RTC_TIME:
+ cmd = RTC_RD_TIME;
+ break;
+ default:
+ LOGE("Invalid time type\n");
+ goto err;
+ }
+
+ rc = ioctl(fd, cmd, &tm);
+ if (rc < 0) {
+ LOGE("Unable to get time\n");
+ goto err;
+ }
+
+ *secs = mktime(&tm) + tm.tm_gmtoff;
+ if (*secs < 0) {
+ LOGE("Invalid seconds = %ld\n", *secs);
+ goto err;
+ }
+
+ close(fd);
+ return 0;
+
+err:
+ close(fd);
+ return -1;
+}
+
+#define ERR_SECS 2
+static int alarm_is_alm_expired()
+{
+ int rc;
+ time_t rtc_secs;
+
+ rc = alarm_get_time(RTC_TIME, &rtc_secs);
+ if (rc < 0)
+ return 0;
+
+ return (alm_secs >= rtc_secs - ERR_SECS &&
+ alm_secs <= rtc_secs + ERR_SECS) ? 1 : 0;
+}
+
+static int timerfd_set_reboot_time_and_wait(time_t secs)
+{
+ int fd;
+ int ret = -1;
+ fd = timerfd_create(CLOCK_REALTIME_ALARM, 0);
+ if (fd < 0) {
+ LOGE("Can't open timerfd alarm node\n");
+ goto err_return;
+ }
+
+ struct itimerspec spec;
+ memset(&spec, 0, sizeof(spec));
+ spec.it_value.tv_sec = secs;
+
+ if (timerfd_settime(fd, 0 /* relative */, &spec, NULL)) {
+ LOGE("Can't set timerfd alarm\n");
+ goto err_close;
+ }
+
+ uint64_t unused;
+ if (read(fd, &unused, sizeof(unused)) < 0) {
+ LOGE("Wait alarm error\n");
+ goto err_close;
+ }
+
+ ret = 0;
+err_close:
+ close(fd);
+err_return:
+ return ret;
+}
+
+static int alarm_set_reboot_time_and_wait(time_t secs)
+{
+ int rc, fd;
+ struct timespec ts;
+
+ fd = open("/dev/alarm", O_RDWR);
+ if (fd < 0) {
+ LOGE("Can't open alarm devfs node, trying timerfd\n");
+ return timerfd_set_reboot_time_and_wait(secs);
+ }
+
+ /* get the elapsed realtime from boot time to now */
+ rc = ioctl(fd, ANDROID_ALARM_GET_TIME(
+ ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP), &ts);
+ if (rc < 0) {
+ LOGE("Unable to get elapsed realtime\n");
+ goto err;
+ }
+
+ /* calculate the elapsed time from boot time to reboot time */
+ ts.tv_sec += secs;
+ ts.tv_nsec = 0;
+
+ rc = ioctl(fd, ANDROID_ALARM_SET(
+ ANDROID_ALARM_ELAPSED_REALTIME_WAKEUP), &ts);
+ if (rc < 0) {
+ LOGE("Unable to set reboot time to %ld\n", secs);
+ goto err;
+ }
+
+ do {
+ rc = ioctl(fd, ANDROID_ALARM_WAIT);
+ } while ((rc < 0 && errno == EINTR) || !alarm_is_alm_expired());
+
+ if (rc <= 0) {
+ LOGE("Unable to wait on alarm\n");
+ goto err;
+ }
+
+ close(fd);
+ return 0;
+
+err:
+ if (fd >= 0)
+ close(fd);
+ return -1;
+}
+
+static void *alarm_thread(void *)
+{
+ time_t rtc_secs, rb_secs;
+ int rc;
+
+ /*
+ * to support power off alarm, the time
+ * stored in alarm register at latest
+ * shutdown time should be some time
+ * earlier than the actual alarm time
+ * set by user
+ */
+ rc = alarm_get_time(ALARM_TIME, &alm_secs);
+ if (rc < 0 || !alm_secs)
+ goto err;
+
+ rc = alarm_get_time(RTC_TIME, &rtc_secs);
+ if (rc < 0)
+ goto err;
+
+ /*
+ * calculate the reboot time after which
+ * the phone will reboot
+ */
+ rb_secs = alm_secs - rtc_secs;
+ if (rb_secs <= 0)
+ goto err;
+
+ rc = alarm_set_reboot_time_and_wait(rb_secs);
+ if (rc < 0)
+ goto err;
+
+ LOGI("Exit from power off charging, reboot the phone!\n");
+ android_reboot(ANDROID_RB_RESTART, 0, 0);
+
+err:
+ LOGE("Exit from alarm thread\n");
+ return NULL;
+}
+#endif
+
+void healthd_board_init(struct healthd_config*)
+{
+ pthread_t tid;
+ char value[PROP_VALUE_MAX];
+ int rc = 0, scale_count = 0, i;
+ GRSurface **scale_frames;
+
+ rc = res_create_multi_display_surface("charger/cm_battery_scale",
+ &scale_count, &scale_frames);
+ if (rc < 0) {
+ LOGE("%s: Unable to load battery scale image", __func__);
+ return;
+ }
+
+ anim.frames = new frame[scale_count];
+ anim.num_frames = scale_count;
+ for (i = 0; i < anim.num_frames; i++) {
+ anim.frames[i].surface = scale_frames[i];
+ anim.frames[i].min_capacity = 100/(scale_count-1) * i;
+ }
+
+#ifdef QCOM_HARDWARE
+ property_get("ro.bootmode", value, "");
+ if (!strcmp("charger", value)) {
+ rc = pthread_create(&tid, NULL, alarm_thread, NULL);
+ if (rc < 0)
+ LOGE("Create alarm thread failed\n");
+ }
+#endif
+}
+
+int healthd_board_battery_update(struct android::BatteryProperties*)
+{
+ // return 0 to log periodic polled battery status to kernel log
+ return 1;
+}
+
+void healthd_board_mode_charger_draw_battery(
+ struct android::BatteryProperties *batt_prop)
+{
+ int start_frame = 0;
+ int capacity = -1;
+
+ if (!font_inited) {
+ gr_set_font("log");
+ font_inited = true;
+ }
+
+ if (batt_prop && batt_prop->batteryLevel >= 0) {
+ capacity = batt_prop->batteryLevel;
+ }
+
+ if (anim.num_frames == 0 || capacity < 0) {
+ LOGE("%s: Unable to draw battery", __func__);
+ return;
+ }
+
+ // Find starting frame to display based on current capacity
+ for (start_frame = 1; start_frame < anim.num_frames; start_frame++) {
+ if (capacity < anim.frames[start_frame].min_capacity)
+ break;
+ }
+ // Always start from the level just below the current capacity
+ start_frame--;
+
+ if (anim.cur_frame < start_frame)
+ anim.cur_frame = start_frame;
+
+ draw_surface_centered(anim.frames[anim.cur_frame].surface);
+ draw_capacity(capacity);
+ // Move to next frame, with max possible frame at max_idx
+ anim.cur_frame = ((anim.cur_frame + 1) % anim.num_frames);
+}
+
+void healthd_board_mode_charger_battery_update(
+ struct android::BatteryProperties*)
+{
+}
+
+void healthd_board_mode_charger_set_backlight(bool)
+{
+}
+
+void healthd_board_mode_charger_init(void)
+{
+}