power.cpp

/*
 * Copyright (C) 2012 The Android Open Source Project
 * Copyright (c) 2012-2014, NVIDIA CORPORATION.  All rights reserved.
 * Copyright (C) 2015 The CyanogenMod Project
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#define LOG_TAG "powerHAL"

#include "powerhal.h"

#ifdef ENABLE_SATA_STANDBY_MODE
#include "tegra_sata_hal.h"

#define FOSTER_E_HDD    "/dev/block/sda"
#define HDD_STANDBY_TIMEOUT     60
#endif

static struct powerhal_info *pInfo;
static struct input_dev_map input_devs[] = {
        {-1, "raydium_ts\n"},
        {-1, "touch\n"},
        {-1, "touch_fusion\n"}
       };

static void shield_power_init(struct power_module *module)
{
    if (!pInfo)
        pInfo = (powerhal_info*)calloc(1, sizeof(powerhal_info));
    // pInfo->input_devs = input_devs;
    // pInfo->input_cnt = sizeof(input_devs)/sizeof(struct input_dev_map);

    common_power_init(module, pInfo);
}

static char hispeed_freq[10];
static char emc_max[10];
static void shield_power_set_interactive(struct power_module *module, int on)
{
    int error = 0;

#ifdef HAVE_TEGRA_LP_CLUSTER
    if (on) {
        sysfs_write("/sys/devices/system/cpu/cpuquiet/tegra_cpuquiet/no_lp", "1");
        sysfs_write("/sys/devices/system/cpu/cpufreq/interactive/hispeed_freq", hispeed_freq);
        sysfs_write("/sys/devices/system/cpu/cpuquiet/tegra_cpuquiet/emc_max", emc_max);
    }
#endif

    common_power_set_interactive(module, pInfo, on);

#ifdef HAVE_TEGRA_LP_CLUSTER
    if (!on) {
        sysfs_write("/sys/devices/system/cpu/cpuquiet/tegra_cpuquiet/no_lp", "0");
        sysfs_write("/sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq", "51000");
        memset(hispeed_freq, 0, sizeof(hispeed_freq));
        sysfs_read("/sys/devices/system/cpu/cpufreq/interactive/hispeed_freq", hispeed_freq, 10);
        sysfs_write("/sys/devices/system/cpu/cpufreq/interactive/hispeed_freq", "510000");
        memset(emc_max, 0, sizeof(emc_max));
        sysfs_read("/sys/devices/system/cpu/cpuquiet/tegra_cpuquiet/emc_max", emc_max, 10);
        sysfs_write("/sys/devices/system/cpu/cpuquiet/tegra_cpuquiet/emc_max", "408000000");
    }
#endif

#ifdef ENABLE_SATA_STANDBY_MODE
    if (!access(FOSTER_E_HDD, F_OK)) {
        /*
         * Turn-off Foster HDD at display off
         */
        ALOGI("HAL: Display is %s, set HDD to %s standby mode.", on?"on":"off", on?"disable":"enter");
        if (on) {
            error = hdd_disable_standby_timer();
            if (error)
                ALOGE("HAL: Failed to set standby timer, error: %d", error);
        }
        else {
            error = hdd_set_standby_timer(HDD_STANDBY_TIMEOUT);
            if (error)
                ALOGE("HAL: Failed to set standby timer, error: %d", error);
        }
    }
#endif
}

static void shield_power_hint(struct power_module *module, power_hint_t hint,
                            void *data)
{
    common_power_hint(module, pInfo, hint, data);
}

static int shield_power_open(__attribute__ ((unused)) const hw_module_t *module, const char *name,
                          __attribute__ ((unused)) hw_device_t **device)
{
    if (strcmp(name, POWER_HARDWARE_MODULE_ID))
        return -EINVAL;

    if (!pInfo) {
        pInfo = (powerhal_info*)calloc(1, sizeof(powerhal_info));

        common_power_open(pInfo);
    }

    return 0;
}

static void shield_set_feature(__attribute__ ((unused)) struct power_module *module, feature_t feature, __attribute__ ((unused)) int state)
{
    switch (feature) {
    case POWER_FEATURE_DOUBLE_TAP_TO_WAKE:
        ALOGW("Double tap to wake is not supported\n");
        break;
    default:
        ALOGW("Error setting the feature, it doesn't exist %d\n", feature);
        break;
    }
}

#if PLATFORM_SDK_VERSION >= 23
static int shield_get_feature(__attribute__ ((unused)) struct power_module *module, feature_t feature)
{
    switch (feature) {
    case POWER_FEATURE_DOUBLE_TAP_TO_WAKE:
        return 0;

    case POWER_FEATURE_SUPPORTED_PROFILES:
        return 3;

    default:
        ALOGW("Error setting the feature, it doesn't exist %d\n", feature);
        break;
    }
    return 0;
}
#endif

static struct hw_module_methods_t power_module_methods = {
    .open = shield_power_open,
};

struct power_module HAL_MODULE_INFO_SYM = {
    .common = {
        .tag = HARDWARE_MODULE_TAG,
        .module_api_version = POWER_MODULE_API_VERSION_0_3,
        .hal_api_version = HARDWARE_HAL_API_VERSION,
        .id = POWER_HARDWARE_MODULE_ID,
        .name = "Shield Power HAL",
        .author = "The CyanogenMod Project",
        .methods = &power_module_methods,
        .dso = NULL,
        .reserved = {0},
    },

    .init = shield_power_init,
    .setInteractive = shield_power_set_interactive,
    .powerHint = shield_power_hint,
    .setFeature = shield_set_feature,
#if PLATFORM_SDK_VERSION >= 23
    .getFeature = shield_get_feature,
#endif
};
static void *reserved[24];