power-8916.c

/*
 * 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 400000
#define MIN_FREQ_CPU0_DISP_ON  960000

char scaling_min_freq[4][80] ={
    "sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq",
    "sys/devices/system/cpu/cpu1/cpufreq/scaling_min_freq",
    "sys/devices/system/cpu/cpu2/cpufreq/scaling_min_freq",
    "sys/devices/system/cpu/cpu3/cpufreq/scaling_min_freq"
};

static int saved_dcvs_cpu0_slack_max = -1;
static int saved_dcvs_cpu0_slack_min = -1;
static int saved_mpdecision_slack_max = -1;
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 int is_target_8916() /* Returns value=8916 if target is 8916 else value 0 */
{
    int fd;
    int is_target_8916=0;
    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");
            is_target_8916 = 0;
        } else {
            int soc_id = atoi(buf);
            if (soc_id == 206 || (soc_id >= 247 && soc_id <= 250))  {
            is_target_8916 = 8916; /* Above SOCID for 8916 */
            }
        }
    }
    close(fd);
    return is_target_8916;
}

int  power_hint_override(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;
        default:
            return HINT_HANDLED;
    }
return HINT_NONE;
}

int  set_interactive_override(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_check_cores(governor, sizeof(governor),CPU0) == -1) {
        if (get_scaling_governor_check_cores(governor, sizeof(governor),CPU1) == -1) {
            if (get_scaling_governor_check_cores(governor, sizeof(governor),CPU2) == -1) {
                if (get_scaling_governor_check_cores(governor, sizeof(governor),CPU3) == -1) {
                    ALOGE("Can't obtain scaling governor.");
                    return HINT_HANDLED;
                }
            }
        }
    }

    if (!on) {
        /* Display off. */
       switch(is_target_8916()) {

          case 8916:
           {
            if ((strncmp(governor, INTERACTIVE_GOVERNOR, strlen(INTERACTIVE_GOVERNOR)) == 0) &&
                (strlen(governor) == strlen(INTERACTIVE_GOVERNOR))) {
               int resource_values[] = {TR_MS_50, THREAD_MIGRATION_SYNC_OFF};

                  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 8916 target*/
           } /* End of Switch case for 8916 */
            break ;

            default:
            {
             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 400Mhz 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[0], tmp_str) != 0) {
                   if (sysfs_write(scaling_min_freq[1], tmp_str) != 0) {
                       if (sysfs_write(scaling_min_freq[2], tmp_str) != 0) {
                           if (sysfs_write(scaling_min_freq[3], 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 8939 target*/
           }/* End of Switch case for 8939 */
           break ;
          }

    } else {
        /* Display on. */
      switch(is_target_8916()){
         case 8916:
         {
          if ((strncmp(governor, INTERACTIVE_GOVERNOR, strlen(INTERACTIVE_GOVERNOR)) == 0) &&
                (strlen(governor) == strlen(INTERACTIVE_GOVERNOR))) {
            undo_hint_action(DISPLAY_STATE_HINT_ID);
            display_hint_sent = 0;
         }
         }
         break ;
         default :
         {

          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[0], tmp_str) != 0) {
                   if (sysfs_write(scaling_min_freq[1], tmp_str) != 0) {
                       if (sysfs_write(scaling_min_freq[2], tmp_str) != 0) {
                           if (sysfs_write(scaling_min_freq[3], 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;
          }

        }
         break ;
      } /* End of check condition during the DISPLAY ON case */
   }
    saved_interactive_mode = !!on;
    return HINT_HANDLED;
}