recovery: Porting screensave mode for new platform.
On new board platform the brightness path of
sys/class/leds/lcd-backlight is deprecated,instead of
/sys/class/backlight/panel0-backlight/.
Test: reboot into recovery on sdm845.
Change-Id: Idf0027ab888f9f982a8eef7de230ce3635e7c300
Signed-off-by: katao <katao@xiaomi.com>
diff --git a/ui.cpp b/ui.cpp
index baf6d10..3c9ded7 100644
--- a/ui.cpp
+++ b/ui.cpp
@@ -48,10 +48,16 @@
static constexpr int UI_WAIT_KEY_TIMEOUT_SEC = 120;
static constexpr const char* BRIGHTNESS_FILE = "/sys/class/leds/lcd-backlight/brightness";
static constexpr const char* MAX_BRIGHTNESS_FILE = "/sys/class/leds/lcd-backlight/max_brightness";
+static constexpr const char* BRIGHTNESS_FILE_SDM =
+ "/sys/class/backlight/panel0-backlight/brightness";
+static constexpr const char* MAX_BRIGHTNESS_FILE_SDM =
+ "/sys/class/backlight/panel0-backlight/max_brightness";
RecoveryUI::RecoveryUI()
: brightness_normal_(50),
brightness_dimmed_(25),
+ brightness_file_(BRIGHTNESS_FILE),
+ max_brightness_file_(MAX_BRIGHTNESS_FILE),
touch_screen_allowed_(false),
kTouchLowThreshold(RECOVERY_UI_TOUCH_LOW_THRESHOLD),
kTouchHighThreshold(RECOVERY_UI_TOUCH_HIGH_THRESHOLD),
@@ -101,12 +107,17 @@
if (brightness_normal_ == 0 || brightness_dimmed_ > brightness_normal_) {
return false;
}
-
+ if (access(brightness_file_.c_str(), R_OK | W_OK)) {
+ brightness_file_ = BRIGHTNESS_FILE_SDM;
+ }
+ if (access(max_brightness_file_.c_str(), R_OK)) {
+ max_brightness_file_ = MAX_BRIGHTNESS_FILE_SDM;
+ }
// Set the initial brightness level based on the max brightness. Note that reading the initial
// value from BRIGHTNESS_FILE doesn't give the actual brightness value (bullhead, sailfish), so
// we don't have a good way to query the default value.
std::string content;
- if (!android::base::ReadFileToString(MAX_BRIGHTNESS_FILE, &content)) {
+ if (!android::base::ReadFileToString(max_brightness_file_, &content)) {
PLOG(WARNING) << "Failed to read max brightness";
return false;
}
@@ -120,7 +131,7 @@
brightness_normal_value_ = max_value * brightness_normal_ / 100.0;
brightness_dimmed_value_ = max_value * brightness_dimmed_ / 100.0;
if (!android::base::WriteStringToFile(std::to_string(brightness_normal_value_),
- BRIGHTNESS_FILE)) {
+ brightness_file_)) {
PLOG(WARNING) << "Failed to set brightness";
return false;
}
@@ -430,13 +441,13 @@
// Lower the brightness level: NORMAL -> DIMMED; DIMMED -> OFF.
if (screensaver_state_ == ScreensaverState::NORMAL) {
if (android::base::WriteStringToFile(std::to_string(brightness_dimmed_value_),
- BRIGHTNESS_FILE)) {
+ brightness_file_)) {
LOG(INFO) << "Brightness: " << brightness_dimmed_value_ << " (" << brightness_dimmed_
<< "%)";
screensaver_state_ = ScreensaverState::DIMMED;
}
} else if (screensaver_state_ == ScreensaverState::DIMMED) {
- if (android::base::WriteStringToFile("0", BRIGHTNESS_FILE)) {
+ if (android::base::WriteStringToFile("0", brightness_file_)) {
LOG(INFO) << "Brightness: 0 (off)";
screensaver_state_ = ScreensaverState::OFF;
}
@@ -451,7 +462,7 @@
// Reset the brightness to normal.
if (android::base::WriteStringToFile(std::to_string(brightness_normal_value_),
- BRIGHTNESS_FILE)) {
+ brightness_file_)) {
screensaver_state_ = ScreensaverState::NORMAL;
LOG(INFO) << "Brightness: " << brightness_normal_value_ << " (" << brightness_normal_
<< "%)";
diff --git a/ui.h b/ui.h
index 4086023..4c54d69 100644
--- a/ui.h
+++ b/ui.h
@@ -148,6 +148,8 @@
// be configured via subclassing. Setting brightness_normal_ to 0 to disable screensaver.
unsigned int brightness_normal_;
unsigned int brightness_dimmed_;
+ std::string brightness_file_;
+ std::string max_brightness_file_;
// Whether we should listen for touch inputs (default: false).
bool touch_screen_allowed_;