From fe60d0ef7042f6845103c42ce1a305745467046f Mon Sep 17 00:00:00 2001
From: Zhoulu Luo <zluo@codeaurora.org>
Date: Fri, 6 Dec 2013 16:32:10 -0800
Subject: [PATCH] Revert "Revert "power: keep two cores online when display is
 on""

This reverts commit 1b147f354e0da3ca98b909357191a4c90b6665b9.
---
 power/hint-data.h  |  1 +
 power/power-8974.c | 26 ++++++++++++++++++++++++++
 power/power.c      | 19 ++++++++++++++++++-
 power/utils.c      | 13 +++++++++++++
 4 files changed, 58 insertions(+), 1 deletion(-)

diff --git a/power/hint-data.h b/power/hint-data.h
index e205c9e8..2a8113a2 100644
--- a/power/hint-data.h
+++ b/power/hint-data.h
@@ -31,6 +31,7 @@
 #define DEFAULT_VIDEO_ENCODE_HINT_ID    (0x0A00)
 #define DEFAULT_VIDEO_DECODE_HINT_ID    (0x0B00)
 #define DISPLAY_STATE_HINT_ID           (0x0C00)
+#define DISPLAY_STATE_HINT_ID_2         (0x0D00)
 
 struct hint_data {
     unsigned long hint_id; /* This is our key. */
diff --git a/power/power-8974.c b/power/power-8974.c
index 91a40451..7aa15294 100644
--- a/power/power-8974.c
+++ b/power/power-8974.c
@@ -48,6 +48,9 @@
 #include "power-common.h"
 
 static int display_hint_sent;
+static int display_hint2_sent;
+static int first_display_off_hint;
+extern int display_boost;
 
 int set_interactive_override(struct power_module *module, int on)
 {
@@ -61,6 +64,22 @@ int set_interactive_override(struct power_module *module, int on)
 
     if (!on) {
         /* Display off. */
+        /*
+         * We need to be able to identify the first display off hint
+         * and release the current lock holder
+         */
+        if (display_boost) {
+            if (!first_display_off_hint) {
+                undo_initial_hint_action();
+                first_display_off_hint = 1;
+            }
+            /* used for all subsequent toggles to the display */
+            if (!display_hint2_sent) {
+                undo_hint_action(DISPLAY_STATE_HINT_ID_2);
+                display_hint2_sent = 1;
+            }
+        }
+
         if ((strncmp(governor, ONDEMAND_GOVERNOR, strlen(ONDEMAND_GOVERNOR)) == 0) &&
                 (strlen(governor) == strlen(ONDEMAND_GOVERNOR))) {
             int resource_values[] = {MS_500, SYNC_FREQ_600, OPTIMAL_FREQ_600, THREAD_MIGRATION_SYNC_OFF};
@@ -75,6 +94,13 @@ int set_interactive_override(struct power_module *module, int on)
         }
     } else {
         /* Display on */
+        if (display_boost && display_hint2_sent) {
+            int resource_values2[] = {CPUS_ONLINE_MIN_2};
+            perform_hint_action(DISPLAY_STATE_HINT_ID_2,
+                    resource_values2, sizeof(resource_values2)/sizeof(resource_values2[0]));
+            display_hint2_sent = 0;
+        }
+
         if ((strncmp(governor, ONDEMAND_GOVERNOR, strlen(ONDEMAND_GOVERNOR)) == 0) &&
                 (strlen(governor) == strlen(ONDEMAND_GOVERNOR))) {
             undo_hint_action(DISPLAY_STATE_HINT_ID);
diff --git a/power/power.c b/power/power.c
index 3cd44732..970a9d73 100644
--- a/power/power.c
+++ b/power/power.c
@@ -55,6 +55,7 @@ static int saved_mpdecision_slack_min = -1;
 static int saved_interactive_mode = -1;
 static int slack_node_rw_failed = 0;
 static int display_hint_sent;
+int display_boost;
 
 static struct hw_module_methods_t power_module_methods = {
     .open = NULL,
@@ -63,6 +64,22 @@ static struct hw_module_methods_t power_module_methods = {
 static void power_init(struct power_module *module)
 {
     ALOGI("QCOM power HAL initing.");
+
+    int fd;
+    char buf[10] = {0};
+
+    fd = open("/sys/devices/soc0/soc_id", O_RDONLY);
+    if (fd >= 0) {
+        if (read(fd, buf, sizeof(buf) - 1) == -1) {
+            ALOGW("Unable to read soc_id");
+        } else {
+            int soc_id = atoi(buf);
+            if (soc_id == 194 || (soc_id >= 208 && soc_id <= 218)) {
+                display_boost = 1;
+            }
+        }
+        close(fd);
+    }
 }
 
 static void process_video_decode_hint(void *metadata)
@@ -242,7 +259,7 @@ void set_interactive(struct power_module *module, int on)
             }
         } else if ((strncmp(governor, INTERACTIVE_GOVERNOR, strlen(INTERACTIVE_GOVERNOR)) == 0) &&
                 (strlen(governor) == strlen(INTERACTIVE_GOVERNOR))) {
-            int resource_values[] = {DISPLAY_OFF, TR_MS_500, THREAD_MIGRATION_SYNC_OFF};
+            int resource_values[] = {TR_MS_500, THREAD_MIGRATION_SYNC_OFF};
 
             if (!display_hint_sent) {
                 perform_hint_action(DISPLAY_STATE_HINT_ID,
diff --git a/power/utils.c b/power/utils.c
index 15f7aed1..5c7863e8 100644
--- a/power/utils.c
+++ b/power/utils.c
@@ -269,3 +269,16 @@ void undo_hint_action(int hint_id)
         }
     }
 }
+
+/*
+ * Used to release initial lock holding
+ * two cores online when the display is on
+ */
+void undo_initial_hint_action()
+{
+    if (qcopt_handle) {
+        if (perf_lock_rel) {
+            perf_lock_rel(1);
+        }
+    }
+}