From 380452d2630ef5c31b97d6657b04dd37e7df5d57 Mon Sep 17 00:00:00 2001
From: Rajashekar Adi <radi@codeaurora.org>
Date: Mon, 4 Dec 2017 11:40:36 +0530
Subject: [PATCH] sdm670:power: Turn on/off display

PowerHAL writes to a sysfs node when it gets display on/off notification.

Change-Id: I58d604cf4fae169f4c9af1ae683c6f7380432220
---
 Android.mk  |  8 +++++
 power-670.c | 97 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 105 insertions(+)
 create mode 100644 power-670.c

diff --git a/Android.mk b/Android.mk
index 748030b..baa5535 100644
--- a/Android.mk
+++ b/Android.mk
@@ -62,6 +62,14 @@ ifeq ($(call is-board-platform-in-list,sdm845), true)
 LOCAL_SRC_FILES += power-845.c
 endif
 
+ifeq ($(call is-board-platform-in-list,sdm670), true)
+LOCAL_SRC_FILES += power-670.c
+endif
+
+ifeq ($(call is-board-platform-in-list,qcs605), true)
+LOCAL_SRC_FILES += power-670.c
+endif
+
 ifeq ($(TARGET_USES_INTERACTION_BOOST),true)
     LOCAL_CFLAGS += -DINTERACTION_BOOST
 endif
diff --git a/power-670.c b/power-670.c
new file mode 100644
index 0000000..487f319
--- /dev/null
+++ b/power-670.c
@@ -0,0 +1,97 @@
+/* Copyright (c) 2017-2018, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ * *    * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+
+#include <errno.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <dlfcn.h>
+#include <stdlib.h>
+
+#define LOG_TAG "QTI PowerHAL"
+#include <utils/Log.h>
+#include <hardware/hardware.h>
+#include <hardware/power.h>
+
+#include "utils.h"
+#include "metadata-defs.h"
+#include "hint-data.h"
+#include "performance.h"
+#include "power-common.h"
+
+static int display_fd;
+#define SYS_DISPLAY_PWR "/sys/kernel/hbtp/display_pwr"
+
+int set_interactive_override(struct power_module *module, int on)
+{
+    static const char *display_on = "1";
+    static const char *display_off = "0";
+    char err_buf[80];
+    static int init_interactive_hint = 0;
+    static int set_i_count = 0;
+    int rc = 0;
+
+    set_i_count ++;
+    ALOGI("Got set_interactive hint on= %d, count= %d\n", on, set_i_count);
+
+    if (init_interactive_hint == 0)
+    {
+        //First time the display is turned off
+        display_fd = TEMP_FAILURE_RETRY(open(SYS_DISPLAY_PWR, O_RDWR));
+        if (display_fd < 0) {
+            strerror_r(errno,err_buf,sizeof(err_buf));
+            ALOGE("Error opening %s: %s\n", SYS_DISPLAY_PWR, err_buf);
+        }
+        else
+            init_interactive_hint = 1;
+    }
+    else
+        if (!on ) {
+            /* Display off. */
+            rc = TEMP_FAILURE_RETRY(write(display_fd, display_off, strlen(display_off)));
+            if (rc < 0) {
+                strerror_r(errno,err_buf,sizeof(err_buf));
+                ALOGE("Error writing %s to  %s: %s\n", display_off, SYS_DISPLAY_PWR, err_buf);
+            }
+        }
+        else {
+            /* Display on */
+            rc = TEMP_FAILURE_RETRY(write(display_fd, display_on, strlen(display_on)));
+            if (rc < 0) {
+                strerror_r(errno,err_buf,sizeof(err_buf));
+                ALOGE("Error writing %s to  %s: %s\n", display_on, SYS_DISPLAY_PWR, err_buf);
+            }
+        }
+
+    return HINT_HANDLED; /* Don't excecute this code path, not in use */
+}
+
+