Zenfone6: Update Light.c from sm8150 CAf for multi color led
taken https://source.codeaurora.org/quic/la/platform/hardware/qcom/display/tree/liblight?h=LA.UM.7.1.r1-15400-sm8150.0
commit ae5a42e19f9163ae4f0c90110af84ee4f5451c56 (Revert "liblight: Add brightness level extension support")
diff --git a/light/lights.c b/light/lights.c
index 61c6de2..d86ab97 100644
--- a/light/lights.c
+++ b/light/lights.c
@@ -1,5 +1,7 @@
/*
- * Copyright (C) 2014 The CyanogenMod Project
+ * Copyright (C) 2014, 2017-2018 The Linux Foundation. All rights reserved.
+ * Not a contribution
+ * Copyright (C) 2008 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.
@@ -14,203 +16,335 @@
* limitations under the License.
*/
-#include <cutils/log.h>
+
+// #define LOG_NDEBUG 0
+
+#include <log/log.h>
+#include <cutils/properties.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
#include <errno.h>
#include <fcntl.h>
#include <pthread.h>
-#include <stdlib.h>
-#include <string.h>
+
+#include <sys/ioctl.h>
+#include <sys/types.h>
#include <hardware/lights.h>
+#ifndef DEFAULT_LOW_PERSISTENCE_MODE_BRIGHTNESS
+#define DEFAULT_LOW_PERSISTENCE_MODE_BRIGHTNESS 0x80
+#endif
+
/******************************************************************************/
-#define MAX_PATH_SIZE 80
-
-#define LED_LIGHT_OFF 0
-#define LED_LIGHT_ON 255
-
-enum {
- ATTENTION = 0,
- NOTIFICATION,
- BATTERY,
- LIGHT_MAX,
-};
-
static pthread_once_t g_init = PTHREAD_ONCE_INIT;
static pthread_mutex_t g_lock = PTHREAD_MUTEX_INITIALIZER;
-static struct light_state_t g_lights[LIGHT_MAX];
+static struct light_state_t g_notification;
+static struct light_state_t g_battery;
+static int g_last_backlight_mode = BRIGHTNESS_MODE_USER;
+static int g_attention = 0;
+static bool g_has_persistence_node = false;
-#define LCD_BRIGHTNESS_FILE "/sys/class/backlight/panel0-backlight/brightness"
+char const*const LCD_FILE
+ = "/sys/class/leds/lcd-backlight/brightness";
-#define GREEN_LED_BREATH_FILE "/sys/class/leds/green/breath"
-#define GREEN_LED_BRIGHTNESS_FILE "/sys/class/leds/green/brightness"
-#define GREEN_LED_DELAY_OFF_FILE "/sys/class/leds/green/delay_off"
-#define GREEN_LED_DELAY_ON_FILE "/sys/class/leds/green/delay_on"
+char const*const LCD_FILE2
+ = "/sys/class/backlight/panel0-backlight/brightness";
-#define RED_LED_BREATH_FILE "/sys/class/leds/red/breath"
-#define RED_LED_BRIGHTNESS_FILE "/sys/class/leds/red/brightness"
-#define RED_LED_DELAY_OFF_FILE "/sys/class/leds/red/delay_off"
-#define RED_LED_DELAY_ON_FILE "/sys/class/leds/red/delay_on"
+char const*const BUTTON_FILE
+ = "/sys/class/leds/button-backlight/brightness";
+char const*const PERSISTENCE_FILE
+ = "/sys/class/graphics/fb0/msm_fb_persist_mode";
+
+enum rgb_led {
+ LED_RED = 0,
+ LED_GREEN,
+ LED_BLUE,
+};
+
+char *led_names[] = {
+ "red",
+ "green",
+ "blue",
+};
/**
* device methods
*/
-void init_globals(void) {
+void init_globals(void)
+{
// init the mutex
pthread_mutex_init(&g_lock, NULL);
}
-static int write_int(char const* path, int value) {
+static int write_int(char const* path, int value)
+{
int fd;
static int already_warned = 0;
fd = open(path, O_RDWR);
if (fd >= 0) {
char buffer[20];
- int bytes = sprintf(buffer, "%d\n", value);
- int amt = write(fd, buffer, bytes);
+ int bytes = snprintf(buffer, sizeof(buffer), "%d\n", value);
+ ssize_t amt = write(fd, buffer, (size_t)bytes);
close(fd);
return amt == -1 ? -errno : 0;
} else {
if (already_warned == 0) {
- ALOGE("%s: failed to open %s\n", __func__, path);
+ ALOGE("write_int failed to open %s, errno = %d\n", path, errno);
already_warned = 1;
}
return -errno;
}
}
-static int is_lit(struct light_state_t const* state) {
+static bool file_exists(const char *file)
+{
+ int fd;
+
+ fd = open(file, O_RDWR);
+ if (fd < 0) {
+ ALOGE("failed to open %s, errno=%d\n", file, errno);
+ return false;
+ }
+
+ close(fd);
+ return true;
+}
+
+static int
+is_lit(struct light_state_t const* state)
+{
return state->color & 0x00ffffff;
}
-static int rgb_to_brightness(struct light_state_t const* state) {
+static int
+rgb_to_brightness(struct light_state_t const* state)
+{
int color = state->color & 0x00ffffff;
- return ((77 * ((color >> 16) & 0x00ff)) + (150 * ((color >> 8) & 0x00ff)) +
- (29 * (color & 0x00ff))) >>
- 8;
+ return ((77*((color>>16)&0x00ff))
+ + (150*((color>>8)&0x00ff)) + (29*(color&0x00ff))) >> 8;
}
-static int set_light_backlight(__attribute__((unused)) struct light_device_t* dev,
- struct light_state_t const* state) {
+static int
+set_light_backlight(struct light_device_t* dev,
+ struct light_state_t const* state)
+{
int err = 0;
int brightness = rgb_to_brightness(state);
- pthread_mutex_lock(&g_lock);
- err = write_int(LCD_BRIGHTNESS_FILE, brightness);
- pthread_mutex_unlock(&g_lock);
- return err;
-}
-
-static int set_light_locked(struct light_state_t const* state) {
- int onMS, offMS;
- int blink = 0;
- int brightness_level;
-
- switch (state->flashMode) {
- case LIGHT_FLASH_TIMED:
- case LIGHT_FLASH_HARDWARE:
- offMS = state->flashOffMS;
- onMS = state->flashOnMS;
- break;
- case LIGHT_FLASH_NONE:
- default:
- offMS = 0;
- onMS = 0;
- break;
+ unsigned int lpEnabled =
+ state->brightnessMode == BRIGHTNESS_MODE_LOW_PERSISTENCE;
+ if(!dev) {
+ return -1;
}
- if (onMS != 0 && offMS != 0) blink = 1;
-
- if (is_lit(state))
- brightness_level =
- (state->color & 0xff000000) ? (state->color & 0xff000000) >> 24 : LED_LIGHT_ON;
- else
- brightness_level = LED_LIGHT_OFF;
-
- if (blink) {
- write_int(GREEN_LED_BREATH_FILE, 1);
- write_int(GREEN_LED_DELAY_OFF_FILE, offMS);
- write_int(GREEN_LED_DELAY_ON_FILE, onMS);
- } else {
- write_int(GREEN_LED_BRIGHTNESS_FILE, brightness_level);
+ pthread_mutex_lock(&g_lock);
+ // Toggle low persistence mode state
+ bool persistence_mode = ((g_last_backlight_mode != state->brightnessMode && lpEnabled) ||
+ (!lpEnabled &&
+ g_last_backlight_mode == BRIGHTNESS_MODE_LOW_PERSISTENCE));
+ bool cannot_handle_persistence = !g_has_persistence_node && persistence_mode;
+ if (g_has_persistence_node) {
+ if (persistence_mode) {
+ if ((err = write_int(PERSISTENCE_FILE, lpEnabled)) != 0) {
+ ALOGE("%s: Failed to write to %s: %s\n", __FUNCTION__,
+ PERSISTENCE_FILE, strerror(errno));
+ }
+ if (lpEnabled != 0) {
+ brightness = DEFAULT_LOW_PERSISTENCE_MODE_BRIGHTNESS;
+ }
+ }
+ g_last_backlight_mode = state->brightnessMode;
}
- return 0;
-}
-
-static int handle_led_prioritized_locked(struct light_state_t const* state) {
- if (is_lit(&g_lights[ATTENTION]))
- return set_light_locked(&g_lights[ATTENTION]);
- else if (is_lit(&g_lights[NOTIFICATION]))
- return set_light_locked(&g_lights[NOTIFICATION]);
- else
- return set_light_locked(state);
-}
-
-static int set_light_notifications(__attribute__((unused)) struct light_device_t* dev,
- struct light_state_t const* state) {
- int err = 0;
- pthread_mutex_lock(&g_lock);
- g_lights[NOTIFICATION] = *state;
- err = handle_led_prioritized_locked(state);
- pthread_mutex_unlock(&g_lock);
- return err;
-}
-
-static int set_light_attention(__attribute__((unused)) struct light_device_t* dev,
- struct light_state_t const* state) {
- int err = 0;
- pthread_mutex_lock(&g_lock);
- g_lights[ATTENTION] = *state;
- err = handle_led_prioritized_locked(state);
- pthread_mutex_unlock(&g_lock);
- return err;
-}
-
-static int set_light_battery(__attribute__((unused)) struct light_device_t* dev,
- struct light_state_t const* state) {
- int err = 0;
-
- if (!dev) return -1;
-
- pthread_mutex_lock(&g_lock);
-
- int level = (state->color & 0xff000000) >> 24;
-
- // sanity check
- if (level < 0)
- level = 0;
- else if (level > 100)
- level = 100;
-
- // turn led off
- write_int(GREEN_LED_BRIGHTNESS_FILE, LED_LIGHT_OFF);
- write_int(RED_LED_BRIGHTNESS_FILE, LED_LIGHT_OFF);
-
- if (is_lit(state)) {
- if (level <= 15) {
- write_int(RED_LED_BRIGHTNESS_FILE, 255);
- } else if (level <= 99) {
- write_int(GREEN_LED_BRIGHTNESS_FILE, 255);
- write_int(RED_LED_BRIGHTNESS_FILE, 255);
+ if (!err) {
+ if (!access(LCD_FILE, F_OK)) {
+ err = write_int(LCD_FILE, brightness);
} else {
- write_int(GREEN_LED_BRIGHTNESS_FILE, 255);
+ err = write_int(LCD_FILE2, brightness);
}
}
pthread_mutex_unlock(&g_lock);
+ return cannot_handle_persistence ? -ENOSYS : err;
+}
+
+static int set_rgb_led_brightness(enum rgb_led led, int brightness)
+{
+ char file[48];
+
+ snprintf(file, sizeof(file), "/sys/class/leds/%s/brightness", led_names[led]);
+ return write_int(file, brightness);
+}
+
+static int set_rgb_led_timer_trigger(enum rgb_led led, int onMS, int offMS)
+{
+ char file[48];
+ int rc;
+
+ snprintf(file, sizeof(file), "/sys/class/leds/%s/delay_off", led_names[led]);
+ rc = write_int(file, offMS);
+ if (rc < 0)
+ goto out;
+
+ snprintf(file, sizeof(file), "/sys/class/leds/%s/delay_on", led_names[led]);
+ rc = write_int(file, onMS);
+ if (rc < 0)
+ goto out;
+
+ return 0;
+out:
+ ALOGD("%s doesn't support timer trigger\n", led_names[led]);
+ return rc;
+}
+
+static int set_rgb_led_hw_blink(enum rgb_led led, int blink)
+{
+ char file[48];
+
+ snprintf(file, sizeof(file), "/sys/class/leds/%s/breath", led_names[led]);
+ if (!file_exists(file))
+ snprintf(file, sizeof(file), "/sys/class/leds/%s/blink", led_names[led]);
+
+ return write_int(file, blink);
+}
+
+static int
+set_speaker_light_locked(struct light_device_t* dev,
+ struct light_state_t const* state)
+{
+ int red, green, blue;
+ int onMS, offMS;
+ unsigned int colorRGB;
+ int blink = 0;
+ int rc = 0;
+
+ if(!dev) {
+ return -1;
+ }
+
+ colorRGB = state->color;
+ red = (colorRGB >> 16) & 0xFF;
+ green = (colorRGB >> 8) & 0xFF;
+ blue = colorRGB & 0xFF;
+
+ onMS = state->flashOnMS;
+ offMS = state->flashOffMS;
+
+ if (onMS != 0 && offMS != 0)
+ blink = 1;
+
+ switch (state->flashMode) {
+ case LIGHT_FLASH_HARDWARE:
+ if (!!red)
+ rc = set_rgb_led_hw_blink(LED_RED, blink);
+ if (!!green)
+ rc |= set_rgb_led_hw_blink(LED_GREEN, blink);
+ if (!!blue)
+ rc |= set_rgb_led_hw_blink(LED_BLUE, blink);
+ /* fallback to timed blinking if breath is not supported */
+ if (rc == 0)
+ break;
+ case LIGHT_FLASH_TIMED:
+ if (!!red)
+ rc = set_rgb_led_timer_trigger(LED_RED, onMS, offMS);
+ if (!!green)
+ rc |= set_rgb_led_timer_trigger(LED_GREEN, onMS, offMS);
+ if (!!blue)
+ rc |= set_rgb_led_timer_trigger(LED_BLUE, onMS, offMS);
+ /* fallback to constant on if timed blinking is not supported */
+ if (rc == 0)
+ break;
+ case LIGHT_FLASH_NONE:
+ default:
+ rc = set_rgb_led_brightness(LED_RED, red);
+ rc |= set_rgb_led_brightness(LED_GREEN, green);
+ rc |= set_rgb_led_brightness(LED_BLUE, blue);
+ break;
+ }
+
+ ALOGD("set_speaker_light_locked mode=%d, colorRGB=%08X, onMS=%d, offMS=%d, rc=%d\n",
+ state->flashMode, colorRGB, onMS, offMS, rc);
+
+ return rc;
+}
+
+static void
+handle_speaker_battery_locked(struct light_device_t* dev)
+{
+ if (is_lit(&g_battery)) {
+ set_speaker_light_locked(dev, &g_battery);
+ } else {
+ set_speaker_light_locked(dev, &g_notification);
+ }
+}
+
+static int
+set_light_battery(struct light_device_t* dev,
+ struct light_state_t const* state)
+{
+ pthread_mutex_lock(&g_lock);
+ g_battery = *state;
+ handle_speaker_battery_locked(dev);
+ pthread_mutex_unlock(&g_lock);
+ return 0;
+}
+
+static int
+set_light_notifications(struct light_device_t* dev,
+ struct light_state_t const* state)
+{
+ pthread_mutex_lock(&g_lock);
+ g_notification = *state;
+ handle_speaker_battery_locked(dev);
+ pthread_mutex_unlock(&g_lock);
+ return 0;
+}
+
+static int
+set_light_attention(struct light_device_t* dev,
+ struct light_state_t const* state)
+{
+ pthread_mutex_lock(&g_lock);
+ if (state->flashMode == LIGHT_FLASH_HARDWARE) {
+ g_attention = state->flashOnMS;
+ } else if (state->flashMode == LIGHT_FLASH_NONE) {
+ g_attention = 0;
+ }
+ handle_speaker_battery_locked(dev);
+ pthread_mutex_unlock(&g_lock);
+ return 0;
+}
+
+static int
+set_light_buttons(struct light_device_t* dev,
+ struct light_state_t const* state)
+{
+ int err = 0;
+ if(!dev) {
+ return -1;
+ }
+ pthread_mutex_lock(&g_lock);
+ err = write_int(BUTTON_FILE, state->color & 0xFF);
+ pthread_mutex_unlock(&g_lock);
return err;
}
/** Close the lights device */
-static int close_lights(struct light_device_t* dev) {
- if (dev) free(dev);
-
+static int
+close_lights(struct light_device_t *dev)
+{
+ if (dev) {
+ free(dev);
+ }
return 0;
}
+
/******************************************************************************/
/**
@@ -219,27 +353,42 @@
/** Open a new instance of a lights device using name */
static int open_lights(const struct hw_module_t* module, char const* name,
- struct hw_device_t** device) {
- int (*set_light)(struct light_device_t * dev, struct light_state_t const* state);
+ struct hw_device_t** device)
+{
+ int (*set_light)(struct light_device_t* dev,
+ struct light_state_t const* state);
- if (strcmp(LIGHT_ID_BACKLIGHT, name) == 0)
+ if (0 == strcmp(LIGHT_ID_BACKLIGHT, name)) {
+ g_has_persistence_node = !access(PERSISTENCE_FILE, F_OK);
set_light = set_light_backlight;
- else if (strcmp(LIGHT_ID_NOTIFICATIONS, name) == 0)
- set_light = set_light_notifications;
- else if (strcmp(LIGHT_ID_ATTENTION, name) == 0)
- set_light = set_light_attention;
- else if (strcmp(LIGHT_ID_BATTERY, name) == 0)
+ } else if (0 == strcmp(LIGHT_ID_BATTERY, name))
set_light = set_light_battery;
+ else if (0 == strcmp(LIGHT_ID_NOTIFICATIONS, name))
+ set_light = set_light_notifications;
+ else if (0 == strcmp(LIGHT_ID_BUTTONS, name)) {
+ if (!access(BUTTON_FILE, F_OK)) {
+ // enable light button when the file is present
+ set_light = set_light_buttons;
+ } else {
+ return -EINVAL;
+ }
+ }
+ else if (0 == strcmp(LIGHT_ID_ATTENTION, name))
+ set_light = set_light_attention;
else
return -EINVAL;
pthread_once(&g_init, init_globals);
- struct light_device_t* dev = malloc(sizeof(struct light_device_t));
+ struct light_device_t *dev = malloc(sizeof(struct light_device_t));
+
+ if(!dev)
+ return -ENOMEM;
+
memset(dev, 0, sizeof(*dev));
dev->common.tag = HARDWARE_DEVICE_TAG;
- dev->common.version = 0;
+ dev->common.version = LIGHTS_DEVICE_API_VERSION_2_0;
dev->common.module = (struct hw_module_t*)module;
dev->common.close = (int (*)(struct hw_device_t*))close_lights;
dev->set_light = set_light;
@@ -249,7 +398,7 @@
}
static struct hw_module_methods_t lights_module_methods = {
- .open = open_lights,
+ .open = open_lights,
};
/*
@@ -260,7 +409,7 @@
.version_major = 1,
.version_minor = 0,
.id = LIGHTS_HARDWARE_MODULE_ID,
- .name = "MSM8916 lights Module",
+ .name = "lights Module",
.author = "Google, Inc.",
.methods = &lights_module_methods,
-};
+};
\ No newline at end of file