From 3a4737b6a00fe2993ba78b9745ab00a4ff781d71 Mon Sep 17 00:00:00 2001
From: Andrew Chant <achant@google.com>
Date: Tue, 17 Dec 2019 19:47:55 +0800
Subject: [PATCH] dumpstate: dump display PMIC registers

Dump PMIC registers for display power supplies.

Bug: 146400230
Test: took a bugreport in userdebug build, saw
display register dumps:
  ------ ELVDD Register Dump (/sys/kernel/debug/regmap/spmi0-05/data) ------
  de00: 00
  de01: 01
  de02: 01
  ...

Change-Id: I9d9e0c74af9e10d4bdaf0151b97ed382d269021e
---
 device.mk                            |  2 ++
 dumpstate/DumpstateDevice.cpp        | 25 +++++++++++++++++++++++++
 init.hardware.userdebug.rc.userdebug | 21 +++++++++++++++++++++
 3 files changed, 48 insertions(+)
 create mode 100644 init.hardware.userdebug.rc.userdebug

diff --git a/device.mk b/device.mk
index 08e3748b..2f5cc4dd 100644
--- a/device.mk
+++ b/device.mk
@@ -124,6 +124,8 @@ ifneq (,$(filter userdebug eng, $(TARGET_BUILD_VARIANT)))
       $(LOCAL_PATH)/init.hardware.ipa.rc.userdebug:$(TARGET_COPY_OUT_VENDOR)/etc/init/init.$(PRODUCT_PLATFORM).ipa.rc
   PRODUCT_COPY_FILES += \
       $(LOCAL_PATH)/init.hardware.power_debug.rc.userdebug:$(TARGET_COPY_OUT_VENDOR)/etc/init/init.$(PRODUCT_PLATFORM).power_debug.rc
+  PRODUCT_COPY_FILES += \
+      $(LOCAL_PATH)/init.hardware.userdebug.rc.userdebug:$(TARGET_COPY_OUT_VENDOR)/etc/init/init.$(PRODUCT_PLATFORM).userdebug.rc
 else
   PRODUCT_COPY_FILES += \
       $(LOCAL_PATH)/init.hardware.diag.rc.user:$(TARGET_COPY_OUT_VENDOR)/etc/init/hw/init.$(PRODUCT_PLATFORM).diag.rc
diff --git a/dumpstate/DumpstateDevice.cpp b/dumpstate/DumpstateDevice.cpp
index 2d52ae21..e98bb56c 100755
--- a/dumpstate/DumpstateDevice.cpp
+++ b/dumpstate/DumpstateDevice.cpp
@@ -18,6 +18,7 @@
 
 #include "DumpstateDevice.h"
 
+#include <android-base/file.h>
 #include <android-base/properties.h>
 #include <android-base/unique_fd.h>
 #include <cutils/properties.h>
@@ -309,6 +310,30 @@ static void DumpDisplay(int fd) {
     DumpFileToFd(fd, "PANEL VENDOR NAME", "/sys/class/panel_info/panel0/panel_vendor_name");
     DumpFileToFd(fd, "PANEL SN", "/sys/class/panel_info/panel0/serial_number");
     DumpFileToFd(fd, "PANEL EXTRA INFO", "/sys/class/panel_info/panel0/panel_extinfo");
+
+    const std::string pmic_regmap_path = "/sys/kernel/debug/regmap/spmi0-05";
+    using android::base::WriteStringToFile;
+
+    if (WriteStringToFile("0x80", pmic_regmap_path + "/count", true) &&
+            WriteStringToFile("0xE000", pmic_regmap_path + "/address", true)) {
+        DumpFileToFd(fd, "OLEDB Register Dump", pmic_regmap_path + "/data");
+    } else {
+        dprintf(fd, "Unable to print OLEDB Register Dump\n");
+    }
+
+    if (WriteStringToFile("0x80", pmic_regmap_path + "/count", true) &&
+            WriteStringToFile("0xDE00", pmic_regmap_path + "/address", true)) {
+        DumpFileToFd(fd, "ELVDD Register Dump", pmic_regmap_path + "/data");
+    } else {
+       dprintf(fd, "Unable to print ELVDD Register Dump\n");
+    }
+
+    if (WriteStringToFile("0x60", pmic_regmap_path + "/count", true) &&
+            WriteStringToFile("0xDC00", pmic_regmap_path + "/address", true)) {
+        DumpFileToFd(fd, "ELVSS Register Dump", pmic_regmap_path + "/data");
+    } else {
+        dprintf(fd, "Unable to print ELVSS Register Dump\n");
+    }
 }
 
 static void DumpSensorLog(int fd) {
diff --git a/init.hardware.userdebug.rc.userdebug b/init.hardware.userdebug.rc.userdebug
new file mode 100644
index 00000000..869d2bed
--- /dev/null
+++ b/init.hardware.userdebug.rc.userdebug
@@ -0,0 +1,21 @@
+#
+# Copyright (C) 2019 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.
+# 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.
+#
+
+on property:sys.boot_completed=1
+    chown system system /sys/kernel/debug/regmap/spmi0-05/address
+    chown system system /sys/kernel/debug/regmap/spmi0-05/count
+    chown system system /sys/kernel/debug/regmap/spmi0-05/data
+