power: Notify touch of display status

PowerHAL writes to a sysfs node to inform touch when display goes on/off

Change-Id: Ia9af606ad3572d498f09d575a40c83e900a0b82a

Android.mk

@@ -70,6 +70,10 @@ ifeq ($(call is-board-platform-in-list,qcs605), true)
 LOCAL_SRC_FILES += power-710.c
 endif
 
+ifeq ($(call is-board-platform-in-list,msmnile), true)
+LOCAL_SRC_FILES += power-8150.c
+endif
+
 ifeq ($(TARGET_USES_INTERACTION_BOOST),true)
     LOCAL_CFLAGS += -DINTERACTION_BOOST
 endif

power-8150.c

@@ -0,0 +1,94 @@
+/*
+ * Copyright (c) 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.
+ */
+
+
+#define LOG_NIDEBUG 0
+
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <dlfcn.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define LOG_TAG "QTI PowerHAL"
+#include <utils/Log.h>
+#include <hardware/hardware.h>
+#include <hardware/power.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;
+}
+