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Commit fcf4b6bc authored by Lincoln Atkinson's avatar Lincoln Atkinson Committed by Shreerag Jayakrishnan
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Add support for controlling recovery brightness at exynos-compatible sysfs path 

Test: manual
Bug: 139537581
Exempt-From-Owner-Approval: wear branch
Change-Id: I163ea0d5e716c9fad28fb2c64306ed24362c53c7
(cherry picked from commit c9c5fcf8d6c9a6be7a5e07bcf94a3f841eaaca25)
(cherry picked from commit 526bd581bca75f93778eb773674773de21fe8f54)
parent 01e576e6

recovery_ui/ui.cpp

+15 −2
Original line number Diff line number Diff line
@@ -48,6 +48,10 @@ constexpr const char* MAX_BRIGHTNESS_FILE = "/sys/class/leds/lcd-backlight/max_b 
constexpr const char* BRIGHTNESS_FILE_SDM = "/sys/class/backlight/panel0-backlight/brightness";

constexpr const char* MAX_BRIGHTNESS_FILE_SDM =

    "/sys/class/backlight/panel0-backlight/max_brightness";

constexpr const char* BRIGHTNESS_FILE_PWM =

    "/sys/class/backlight/pwm-backlight.0/brightness";

constexpr const char* MAX_BRIGHTNESS_FILE_PWM =

    "/sys/class/backlight/pwm-backlight.0/max_brightness";



constexpr int kDefaultTouchLowThreshold = 50;

constexpr int kDefaultTouchHighThreshold = 90;
@@ -106,10 +110,19 @@ bool RecoveryUI::InitScreensaver() { 
    return false;

  }

  if (access(brightness_file_.c_str(), R_OK | W_OK)) {

    if (!access(BRIGHTNESS_FILE_SDM, R_OK | W_OK)) {

      brightness_file_ = BRIGHTNESS_FILE_SDM;

    } else {

      brightness_file_ = BRIGHTNESS_FILE_PWM;

    }

  }



  if (access(max_brightness_file_.c_str(), R_OK)) {

    if (!access(MAX_BRIGHTNESS_FILE_SDM, R_OK)) {

      max_brightness_file_ = MAX_BRIGHTNESS_FILE_SDM;

    } else {

      max_brightness_file_ = MAX_BRIGHTNESS_FILE_PWM;

    }

  }

  // 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