system/dev/board/vim/vim-thermal.cpp

// Copyright 2018 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "vim.h"
#include <ddk/debug.h>
#include <ddk/device.h>
#include <ddk/metadata.h>
#include <ddk/platform-defs.h>
#include <ddk/protocol/platform/bus.h>
#include <soc/aml-common/aml-thermal.h>
#include <soc/aml-s912/s912-gpio.h>
#include <soc/aml-s912/s912-hw.h>

namespace vim {

static const pbus_mmio_t mailbox_mmios[] = {
    // Mailbox
    {
        .base = S912_HIU_MAILBOX_BASE,
        .length = S912_HIU_MAILBOX_LENGTH,
    },
    // Mailbox Payload
    {
        .base = S912_MAILBOX_PAYLOAD_BASE,
        .length = S912_MAILBOX_PAYLOAD_LENGTH,
    },
};

// IRQ for Mailbox
static const pbus_irq_t mailbox_irqs[] = {
    {.irq = S912_MBOX_IRQ_RECEIV0,
     .mode = ZX_INTERRUPT_MODE_EDGE_HIGH},
    {.irq = S912_MBOX_IRQ_RECEIV1,
     .mode = ZX_INTERRUPT_MODE_EDGE_HIGH},
    {.irq = S912_MBOX_IRQ_RECEIV2,
     .mode = ZX_INTERRUPT_MODE_EDGE_HIGH},
    {.irq = S912_MBOX_IRQ_SEND3,
     .mode = ZX_INTERRUPT_MODE_EDGE_HIGH},
    {.irq = S912_MBOX_IRQ_SEND4,
     .mode = ZX_INTERRUPT_MODE_EDGE_HIGH},
    {.irq = S912_MBOX_IRQ_SEND5,
     .mode = ZX_INTERRUPT_MODE_EDGE_HIGH},
};

static const pbus_gpio_t fanctl_gpios[] = {
    {
        .gpio = S912_GPIODV(14),
    },
    {
        .gpio = S912_GPIODV(15),
    }};

/* ACTIVE COOLING - For VIM2, we assume that all devices
 * are connected with a GPIO-controlled fan.
 * The GPIO controlled fan has 3 levels of speed (1-3)
 *
 * PASSIVE COOLING - For VIM2, we have DVFS support added
 * Below is the operating point information for Big cluster
 * Operating point 0 - Freq 0.1000 Ghz Voltage 0.9100 V
 * Operating point 1 - Freq 0.2500 Ghz Voltage 0.9100 V
 * Operating point 2 - Freq 0.5000 Ghz Voltage 0.9100 V
 * Operating point 3 - Freq 0.6670 Ghz Voltage 0.9500 V
 * Operating point 4 - Freq 1.0000 Ghz Voltage 0.9900 V
 * Operating point 5 - Freq 1.2000 Ghz Voltage 1.0700 V
 * Operating point 6 - Freq 1.2960 Ghz Voltage 1.1000 V
 *
 * Below is the operating point information for Little cluster
 * Operating point 0 - Freq 0.1000 Ghz Voltage 0.9100 V
 * Operating point 1 - Freq 0.2500 Ghz Voltage 0.9100 V
 * Operating point 2 - Freq 0.5000 Ghz Voltage 0.9100 V
 * Operating point 3 - Freq 0.6670 Ghz Voltage 0.9500 V
 * Operating point 4 - Freq 1.0000 Ghz Voltage 0.9900 V
 *
 * GPU_CLK_FREQUENCY_SOURCE - For VIM2, we support GPU
 * throttling. Currently we have pre-defined frequencies
 * we can set the GPU clock to, but we can always add more
 * One's we support now are below
 * Operating point  0 - 285.7 MHz
 * Operating point  1 - 400.0 MHz
 * Operating point  2 - 500.0 MHz
 * Operating point  3 - 666.0 MHz
 * Operating point -1 - INVALID/No throttling needed
 */

static thermal_device_info_t aml_vim2_config = {
    .active_cooling = true,
    .passive_cooling = true,
    .gpu_throttling = true,
    .num_trip_points = 8,
    .big_little = true,
    .critical_temp = 81,
    .trip_point_info = {
        {
            // This is the initial thermal setup of the device
            // Fan set to OFF
            // CPU freq set to a known stable MAX

            //c++ initialization error
            .up_temp = 2,
            .down_temp = 0,
            //c++ initialization error
            .fan_level = 0,
            .big_cluster_dvfs_opp = 6,
            .little_cluster_dvfs_opp = 4,
            .gpu_clk_freq_source = 3,
        },
        {
            .up_temp = 65,
            .down_temp = 63,
            .fan_level = 1,
            .big_cluster_dvfs_opp = 6,
            .little_cluster_dvfs_opp = 4,
            .gpu_clk_freq_source = 3,
        },
        {
            .up_temp = 70,
            .down_temp = 68,
            .fan_level = 2,
            .big_cluster_dvfs_opp = 6,
            .little_cluster_dvfs_opp = 4,
            .gpu_clk_freq_source = 3,
        },
        {
            .up_temp = 75,
            .down_temp = 73,
            .fan_level = 3,
            .big_cluster_dvfs_opp = 6,
            .little_cluster_dvfs_opp = 4,
            .gpu_clk_freq_source = 3,
        },
        {
            .up_temp = 82,
            .down_temp = 79,
            .fan_level = 3,
            .big_cluster_dvfs_opp = 5,
            .little_cluster_dvfs_opp = 4,
            .gpu_clk_freq_source = 2,
        },
        {
            .up_temp = 87,
            .down_temp = 84,
            .fan_level = 3,
            .big_cluster_dvfs_opp = 4,
            .little_cluster_dvfs_opp = 4,
            .gpu_clk_freq_source = 2,
        },
        {
            .up_temp = 92,
            .down_temp = 89,
            .fan_level = 3,
            .big_cluster_dvfs_opp = 3,
            .little_cluster_dvfs_opp = 3,
            .gpu_clk_freq_source = 1,
        },
        {
            .up_temp = 96,
            .down_temp = 93,
            .fan_level = 3,
            .big_cluster_dvfs_opp = 2,
            .little_cluster_dvfs_opp = 2,
            .gpu_clk_freq_source = 0,
        },
    },
    .opps = {},
};

static const pbus_metadata_t vim_thermal_metadata[] = {
    {
        .type = DEVICE_METADATA_PRIVATE,
        .data_buffer = &aml_vim2_config,
        .data_size = sizeof(aml_vim2_config),
    }};

static const pbus_dev_t scpi_children[] = {
    // VIM2 thermal driver
    []() {
        pbus_dev_t dev;
        dev.gpio_list = fanctl_gpios;
        dev.gpio_count = countof(fanctl_gpios);
        dev.metadata_list = vim_thermal_metadata;
        dev.metadata_count = countof(vim_thermal_metadata);
        return dev;
    }(),
};

static const pbus_dev_t mailbox_children[] = {
    // Amlogic SCPI driver
    []() {
        pbus_dev_t dev;
        dev.child_list = scpi_children;
        dev.child_count = countof(scpi_children);
        return dev;
    }(),
};

zx_status_t Vim::ThermalInit() {
    pbus_dev_t mailbox_dev = {};
    mailbox_dev.name = "mailbox";
    mailbox_dev.vid = PDEV_VID_KHADAS;
    mailbox_dev.pid = PDEV_PID_VIM2;
    mailbox_dev.did = PDEV_DID_AMLOGIC_MAILBOX;
    mailbox_dev.mmio_list = mailbox_mmios;
    mailbox_dev.mmio_count = countof(mailbox_mmios);
    mailbox_dev.irq_list = mailbox_irqs;
    mailbox_dev.irq_count = countof(mailbox_irqs);
    mailbox_dev.child_list = mailbox_children;
    mailbox_dev.child_count = countof(mailbox_children);

    zx_status_t status = pbus_.DeviceAdd(&mailbox_dev);

    if (status != ZX_OK) {
        zxlogf(ERROR, "ThermalInit: pbus_device_add failed: %d\n", status);
        return status;
    }
    return ZX_OK;
}
} //namespace vim