From 51ed1b3fb1f66fe982b071be8b888b44cb242d43 Mon Sep 17 00:00:00 2001
From: RoyYH Lee <royyhlee@google.com>
Date: Fri, 1 Sep 2023 12:08:28 +0800
Subject: [PATCH] display: set default and enable adaptive brightness

Bug: 284857378
Test: dumpsys log shows correct information, include
mDisplayDeviceConfig & BrightnessConfiguration

Change-Id: I6ee8e908bf8a21dac1f4ff95d5f424ef0e0ba0d3
---
 .../base/core/res/res/values/config.xml       | 202 ++++++++++++++++++
 device-comet.mk                               |   2 +
 2 files changed, 204 insertions(+)

diff --git a/comet/overlay/frameworks/base/core/res/res/values/config.xml b/comet/overlay/frameworks/base/core/res/res/values/config.xml
index 9f553de..d332627 100644
--- a/comet/overlay/frameworks/base/core/res/res/values/config.xml
+++ b/comet/overlay/frameworks/base/core/res/res/values/config.xml
@@ -21,6 +21,208 @@
     <!-- The max vibration strength allowed in audio haptic channels. -->
     <item name="config_hapticChannelMaxVibrationAmplitude" format="float" type="dimen">0.335</item>
 
+    <!-- Flag indicating whether the we should enable the automatic brightness in Settings.
+         Software implementation will be used if config_hardware_auto_brightness_available is not set -->
+    <bool name="config_automatic_brightness_available">true</bool>
+
+    <!-- Minimum screen brightness allowed by the power manager. -->
+    <integer name="config_screenBrightnessDim">6</integer>
+
+    <!-- Minimum screen brightness setting allowed by power manager.
+         The user is forbidden from setting the brightness below this level.  -->
+    <item name="config_screenBrightnessSettingMinimumFloat" format="float" type="dimen">0.0</item>
+
+    <!-- Maximum screen brightness allowed by the power manager.
+         The user is forbidden from setting the brightness above this level. -->
+    <item name="config_screenBrightnessSettingMaximumFloat" format="float" type="dimen">1.0</item>
+
+    <!-- Default screen brightness setting
+         Must be in the range specified by minimum and maximum. -->
+    <item name="config_screenBrightnessSettingDefaultFloat" format="float" type="dimen">0.087114228</item>
+
+    <!-- Array of light sensor LUX values to define our levels for auto backlight brightness support.
+      The N entries of this array define N  1 zones as follows:
+         Zone 0:        0 <= LUX < array[0]
+         Zone 1:        array[0] <= LUX < array[1]
+         ...
+         Zone N:        array[N - 1] <= LUX < array[N]
+         Zone N + 1     array[N] <= LUX < infinity
+         Must be overridden in platform specific overlays -->
+    <integer-array name="config_autoBrightnessLevels">
+        <item>1</item>
+        <item>2</item>
+        <item>3</item>
+        <item>4</item>
+        <item>8</item>
+        <item>12</item>
+        <item>15</item>
+        <item>20</item>
+        <item>33</item>
+        <item>55</item>
+        <item>90</item>
+        <item>148</item>
+        <item>245</item>
+        <item>403</item>
+        <item>665</item>
+        <item>1097</item>
+        <item>1808</item>
+        <item>3000</item>
+        <item>6000</item>
+        <item>9000</item>
+        <item>10000</item>
+        <item>14000</item>
+        <item>20000</item>
+        <item>25000</item>
+        <item>31000</item>
+        <item>51000</item>
+        <item>81000</item>
+    </integer-array>
+
+    <!-- Array of desired screen brightness in nits corresponding to the lux values
+      in the config_autoBrightnessLevels array. As with config_screenBrightnessMinimumNits and
+      config_screenBrightnessMaximumNits, the display brightness is defined as the measured
+      brightness of an all-white image.
+
+      If this is defined then:
+      - config_autoBrightnessLcdBacklightValues should not be defined
+      - config_screenBrightnessNits must be defined
+      - config_screenBrightnessBacklight must be defined
+
+      This array should have size one greater than the size of the config_autoBrightnessLevels
+      array. The brightness values must be non-negative and non-decreasing. This must be
+      overridden in platform specific overlays -->
+    <array name="config_autoBrightnessDisplayValuesNits">
+        <item>5.139055</item>      <!--  0 - 1 -->
+        <item>9.962018965</item>   <!--  1 - 2 -->
+        <item>18.34822964</item>   <!--  2 - 3 -->
+        <item>21.55068128</item>   <!--  3 - 4 -->
+        <item>24.0167788</item>    <!--  4 - 8 -->
+        <item>32.5</item>          <!--  8 - 12 -->
+        <item>46</item>            <!--  12 - 15 -->
+        <item>53.26923077</item>   <!--  15 - 20 -->
+        <item>54.61538462</item>   <!--  20 - 33 -->
+        <item>58.11538462</item>   <!--  33 - 55 -->
+        <item>62.1394</item>       <!--  55 - 90 -->
+        <item>67.13133333</item>   <!--  90 - 148 -->
+        <item>79.67614115</item>   <!--  148 - 245 -->
+        <item>98.04727274</item>   <!--  245 - 403 -->
+        <item>125.1221991</item>   <!--  403 - 665 -->
+        <item>161.6875093</item>   <!--  665 - 1097 -->
+        <item>208.4885553</item>   <!--  1097 - 1808 -->
+        <item>264.8221315</item>   <!--  1808 - 3000 -->
+        <item>328.5869521</item>   <!--  3000 - 6000 -->
+        <item>627.4315413</item>   <!--  6000 - 9000 -->
+        <item>826.8584866</item>   <!--  9000 - 10000 -->
+        <item>867.85582302</item>  <!-- 10000 - 14000 -->
+        <item>1041.39662279</item> <!-- 14000 - 20000 -->
+        <item>1227.52633489</item> <!-- 20000 - 25000 -->
+        <item>1331.28933608</item> <!-- 25000 - 31000 -->
+        <item>1414.57566867</item> <!-- 31000 - 51000 -->
+        <item>1553.22826182</item> <!-- 51000 - 81000 -->
+        <item>1614.01031782</item> <!-- 81000+ -->
+    </array>
+
+    <!-- Stability requirements in milliseconds for accepting a new brightness level.  This is used
+         for debouncing the light sensor.  Different constants are used to debounce the light sensor
+         when adapting to brighter or darker environments.  This parameter controls how quickly
+         brightness changes occur in response to an observed change in light level that exceeds the
+         hysteresis threshold. -->
+    <integer name="config_autoBrightnessBrighteningLightDebounce">1000</integer>
+    <integer name="config_autoBrightnessDarkeningLightDebounce">4000</integer>
+
+    <integer-array name="config_ambientThresholdLevels">
+        <item>2</item>
+        <item>3</item>
+        <item>4</item>
+        <item>5</item>
+        <item>6</item>
+        <item>7</item>
+        <item>8</item>
+        <item>9</item>
+        <item>10</item>
+        <item>20</item>
+        <item>30</item>
+        <item>40</item>
+        <item>50</item>
+        <item>60</item>
+        <item>70</item>
+        <item>80</item>
+        <item>90</item>
+        <item>100</item>
+        <item>200</item>
+        <item>300</item>
+        <item>400</item>
+        <item>500</item>
+        <item>1000</item>
+        <item>2000</item>
+        <item>3000</item>
+        <item>4000</item>
+    </integer-array>
+
+    <integer-array name="config_ambientBrighteningThresholds">
+        <item>5186</item>
+        <item>4333</item>
+        <item>3666</item>
+        <item>2999</item>
+        <item>2759</item>
+        <item>2519</item>
+        <item>2279</item>
+        <item>2039</item>
+        <item>1799</item>
+        <item>799</item>
+        <item>527</item>
+        <item>499</item>
+        <item>470</item>
+        <item>517</item>
+        <item>565</item>
+        <item>612</item>
+        <item>660</item>
+        <item>708</item>
+        <item>742</item>
+        <item>636</item>
+        <item>582</item>
+        <item>549</item>
+        <item>369</item>
+        <item>294</item>
+        <item>269</item>
+        <item>220</item>
+        <item>220</item>
+    </integer-array>
+
+    <integer-array name="config_ambientDarkeningThresholds">
+        <item>525</item>
+        <item>683</item>
+        <item>666</item>
+        <item>650</item>
+        <item>640</item>
+        <item>630</item>
+        <item>620</item>
+        <item>610</item>
+        <item>600</item>
+        <item>500</item>
+        <item>500</item>
+        <item>440</item>
+        <item>385</item>
+        <item>382</item>
+        <item>379</item>
+        <item>376</item>
+        <item>373</item>
+        <item>371</item>
+        <item>367</item>
+        <item>387</item>
+        <item>397</item>
+        <item>403</item>
+        <item>380</item>
+        <item>345</item>
+        <item>333</item>
+        <item>283</item>
+        <item>283</item>
+    </integer-array>
+
+    <!-- The maximum range of gamma adjustment possible using the screen
+         auto-brightness adjustment setting. -->
+    <fraction name="config_autoBrightnessAdjustmentMaxGamma">105%</fraction>
+
     <dimen name="status_bar_height_default">52dp</dimen>
     <dimen name="status_bar_height_portrait">52dp</dimen>
     <dimen name="status_bar_height_landscape">52dp</dimen>
diff --git a/device-comet.mk b/device-comet.mk
index a90f3be..fd6652b 100644
--- a/device-comet.mk
+++ b/device-comet.mk
@@ -24,6 +24,8 @@ $(call inherit-product-if-exists, vendor/google_devices/zumapro/proprietary/devi
 $(call inherit-product-if-exists, vendor/google_devices/comet/proprietary/comet/device-vendor-comet.mk)
 $(call inherit-product-if-exists, vendor/qorvo/uwb/qm35-hal/Device.mk)
 
+DEVICE_PACKAGE_OVERLAYS += device/google/comet/comet/overlay
+
 # Disable modem until b/291009607 is fixed
 BOARD_WITHOUT_RADIO := true