common: Change minfreq to 499.2Mhz during display off scenario.

1.Changes to set CPU0 min freq for 8952 target as below:.
          Display off case :  set to  499.2Mhz
          Display on case  :  set to  960Mhz.
        2.Changes to set CPU0 and CPU4 interactive timer rate values
          Display off cases : Set cpu0 and cpu4 to 50ms.

Change-Id: I833da462ab4db033a33051ed9499ea75b13f5d9f

power/Android.mk

@@ -35,6 +35,10 @@ ifeq ($(call is-board-platform-in-list, msm8996), true)
 LOCAL_SRC_FILES += power-8996.c
 endif
 
+ifeq ($(call is-board-platform-in-list,msm8952), true)
+LOCAL_SRC_FILES += power-8952.c
+endif
+
 ifeq ($(TARGET_USES_INTERACTION_BOOST),true)
     LOCAL_CFLAGS += -DINTERACTION_BOOST
 endif

power/performance.h

@@ -136,6 +136,26 @@ enum INTERACTIVE_TIMER_RATE_LVL {
     TR_MS_20 = 0xEFD,
 };
 
+/* This timer rate applicable to cpu0
+    across 8939/8952 series chipset */
+enum INTERACTIVE_TIMER_RATE_LVL_CPU0_8939 {
+    TR_MS_CPU0_500 = 0x30CD,
+    TR_MS_CPU0_100 = 0x30F5,
+    TR_MS_CPU0_50 = 0x30FA,
+    TR_MS_CPU0_30 = 0x30FC,
+    TR_MS_CPU0_20 = 0x30FD,
+};
+
+/* This timer rate applicable to cpu4
+    across 8939/8952 series chipset */
+enum INTERACTIVE_TIMER_RATE_LVL_CPU4_8939 {
+    TR_MS_CPU4_500 = 0x3BCD,
+    TR_MS_CPU4_100 = 0x3BF5,
+    TR_MS_CPU4_50 = 0x3BFA,
+    TR_MS_CPU4_30 = 0x3BFC,
+    TR_MS_CPU4_20 = 0x3BFD,
+};
+
 enum INTERACTIVE_HISPEED_FREQ_LVL {
     HS_FREQ_1026 = 0xF0A,
 };

power/power-8952.c

@@ -0,0 +1,139 @@
+/*
+ * Copyright (c) 2015, 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 <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"
+
+#define MIN_FREQ_CPU0_DISP_OFF 499200
+#define MIN_FREQ_CPU0_DISP_ON  960000
+
+static int saved_interactive_mode = -1;
+static int slack_node_rw_failed = 0;
+static int display_hint_sent;
+
+
+int  power_hint_override(struct power_module *module, power_hint_t hint,
+        void *data)
+{
+
+    switch(hint) {
+        case POWER_HINT_VSYNC:
+        break;
+        case POWER_HINT_INTERACTION:
+        {
+            int resources[] = {0x702, 0x20F, 0x30F};
+            int duration = 3000;
+
+            interaction(duration, sizeof(resources)/sizeof(resources[0]), resources);
+        }
+            return HINT_HANDLED;
+        case POWER_HINT_VIDEO_ENCODE: /* Do nothing for encode case  */
+            return HINT_HANDLED;
+        case POWER_HINT_VIDEO_DECODE: /*Do nothing for encode case  */
+            return HINT_HANDLED;
+    }
+return HINT_NONE;
+}
+
+int  set_interactive_override(struct power_module *module, int on)
+{
+    char governor[80];
+    char tmp_str[NODE_MAX];
+    struct video_encode_metadata_t video_encode_metadata;
+    int rc;
+
+    ALOGI("Got set_interactive hint");
+
+    if (get_scaling_governor(governor, sizeof(governor)) == -1) {
+        ALOGE("Can't obtain scaling governor.");
+
+        return HINT_HANDLED;
+    }
+
+    if (!on) {
+        /* Display off. */
+             if ((strncmp(governor, INTERACTIVE_GOVERNOR, strlen(INTERACTIVE_GOVERNOR)) == 0) &&
+                (strlen(governor) == strlen(INTERACTIVE_GOVERNOR))) {
+               int resource_values[] = {TR_MS_CPU0_50,TR_MS_CPU4_50, THREAD_MIGRATION_SYNC_OFF};
+
+               /* Set CPU0 MIN FREQ to 499.2Mhz avoid extra peak power
+                  impact in volume key press  */
+               snprintf(tmp_str, NODE_MAX, "%d", MIN_FREQ_CPU0_DISP_OFF);
+               if (sysfs_write(SCALING_MIN_FREQ, tmp_str) != 0) {
+                 if(!slack_node_rw_failed) {
+                   ALOGE("Failed to write to %s",SCALING_MIN_FREQ );
+                 }
+                  rc = 1;
+                }
+               if (!display_hint_sent) {
+                   perform_hint_action(DISPLAY_STATE_HINT_ID,
+                   resource_values, sizeof(resource_values)/sizeof(resource_values[0]));
+                  display_hint_sent = 1;
+                }
+             } /* Perf time rate set for CORE0,CORE4 8952 target*/
+
+    } else {
+        /* Display on. */
+          if ((strncmp(governor, INTERACTIVE_GOVERNOR, strlen(INTERACTIVE_GOVERNOR)) == 0) &&
+                (strlen(governor) == strlen(INTERACTIVE_GOVERNOR))) {
+
+              /* Recovering MIN_FREQ in display ON case */
+              snprintf(tmp_str, NODE_MAX, "%d", MIN_FREQ_CPU0_DISP_ON);
+              if (sysfs_write(SCALING_MIN_FREQ, tmp_str) != 0) {
+                  if(!slack_node_rw_failed) {
+                     ALOGE("Failed to write to %s",SCALING_MIN_FREQ );
+                  }
+                   rc = 1;
+              }
+             undo_hint_action(DISPLAY_STATE_HINT_ID);
+             display_hint_sent = 0;
+          }
+   }
+    saved_interactive_mode = !!on;
+    return HINT_HANDLED;
+}
+