PowerHAL testing

compile

. /usr/local/oecore-x86_64/environment-setup-armv7vehf-neon-oe-linux-gnueabi
arm-oe-linux-gnueabi-gcc  -march=armv7ve -mfpu=neon -mfloat-abi=hard --sysroot=/usr/local/oecore-x86_64/sysroots/armv7vehf-neon-oe-linux-gnueabi -I<LOCATION TO ANDROID HEADERS> -o powerhal-test powerhal-test.c -lhardware

powerhal-test.c

#include <string.h>
#include <stdio.h>
#include <hardware/hardware.h>
#include <hardware/hwcomposer.h>
#include <hardware/power.h>

int main(int argc, char* argv[]) {
    hw_module_t *hwc_module = NULL;
    hw_device_t *hwc_dev = NULL;
    hwc_composer_device_1_t *hwc_device = NULL;
    // Open hardware composer
    hw_get_module(HWC_HARDWARE_MODULE_ID, (const hw_module_t **)(&hwc_module));

    fprintf(stderr, "== hwcomposer module ==\n");
    fprintf(stderr, " * Address: %p\n", hwc_module);
    fprintf(stderr, " * Module API Version: %x\n", hwc_module->module_api_version);
    fprintf(stderr, " * HAL API Version: %x\n", hwc_module->hal_api_version); /* should be zero */
    fprintf(stderr, " * Identifier: %s\n", hwc_module->id);
    fprintf(stderr, " * Name: %s\n", hwc_module->name);
    fprintf(stderr, " * Author: %s\n", hwc_module->author);
    fprintf(stderr, "== hwcomposer module ==\n");

    // Open hardware composer device
    hwc_module->methods->open(hwc_module, HWC_HARDWARE_COMPOSER, &hwc_dev);


    fprintf(stderr, "== hwcomposer device ==\n");
    fprintf(stderr, " * Version: %x (interpreted as %x)\n", hwc_dev->version, 42);
    fprintf(stderr, " * Module: %p\n", hwc_dev->module);
    fprintf(stderr, "== hwcomposer device ==\n");
    hwc_device = (hwc_composer_device_1_t*)hwc_dev;


    power_module_t *pwr_module = NULL;
    // Open power module for setting interactive state based on screen on/off.
    if (!hw_get_module(POWER_HARDWARE_MODULE_ID, (const hw_module_t **)(&pwr_module))) {
        pwr_module->init(pwr_module);
        fprintf(stderr, "== power module ==\n");
        fprintf(stderr, " * Address: %p\n", pwr_module);
        fprintf(stderr, " * Module API Version: %x\n", pwr_module->common.module_api_version);
        fprintf(stderr, " * HAL API Version: %x\n", pwr_module->common.hal_api_version); /* should be zero */
        fprintf(stderr, " * Identifier: %s\n", pwr_module->common.id);
        fprintf(stderr, " * Name: %s\n", pwr_module->common.name);
        fprintf(stderr, " * Author: %s\n", pwr_module->common.author);
        fprintf(stderr, "== power module ==\n");
    } else {
        fprintf(stderr, "PowerHAL is missing or not working, display doze mode may not work\n");
    }

    //autosuspend_disable();
    //pwr_module->setInteractive(pwr_module, 1);
    //pwr_module->setFeature(pwr_module, 1, 0);
    //pwr_module->powerHint(pwr_module, 2, NULL); // same as below
    pwr_module->powerHint(pwr_module, POWER_HINT_INTERACTION, NULL);
    //pwr_module->powerHint(pwr_module, 5, (void*)1);
    pwr_module->setInteractive(pwr_module, 0);
  return 0;
}