| // 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 "aml-thermal.h" |
| #include <ddk/binding.h> |
| #include <ddk/device.h> |
| #include <ddk/driver.h> |
| #include <ddk/platform-defs.h> |
| #include <ddktl/protocol/composite.h> |
| #include <fbl/auto_call.h> |
| #include <fbl/unique_ptr.h> |
| #include <soc/aml-common/aml-thermal.h> |
| #include <string.h> |
| #include <zircon/syscalls/port.h> |
| |
| namespace thermal { |
| namespace { |
| |
| // Worker-thread's internal loop deadline in seconds. |
| constexpr int kDeadline = 5; |
| |
| enum { |
| COMPONENT_SCPI, |
| COMPONENT_GPIO_FAN_0, |
| COMPONENT_GPIO_FAN_1, |
| COMPONENT_COUNT, |
| }; |
| |
| } // namespace |
| |
| zx_status_t AmlThermal::Create(void* ctx, zx_device_t* device) { |
| zxlogf(INFO, "aml_thermal: driver begin...\n"); |
| zx_status_t status; |
| |
| ddk::CompositeProtocolClient composite(device); |
| if (!composite.is_valid()) { |
| THERMAL_ERROR("could not get composite protocol\n"); |
| return ZX_ERR_NOT_SUPPORTED; |
| } |
| |
| zx_device_t* components[COMPONENT_COUNT]; |
| size_t actual; |
| composite.GetComponents(components, COMPONENT_COUNT, &actual); |
| if (actual != COMPONENT_COUNT) { |
| THERMAL_ERROR("could not get components\n"); |
| return ZX_ERR_NOT_SUPPORTED; |
| } |
| |
| scpi_protocol_t scpi_proto; |
| status = device_get_protocol(components[COMPONENT_SCPI], ZX_PROTOCOL_SCPI, &scpi_proto); |
| if (status != ZX_OK) { |
| THERMAL_ERROR("could not get scpi protocol: %d\n", status); |
| return status; |
| } |
| |
| gpio_protocol_t fan0_gpio_proto; |
| status = device_get_protocol(components[COMPONENT_GPIO_FAN_0], ZX_PROTOCOL_GPIO, |
| &fan0_gpio_proto); |
| if (status != ZX_OK) { |
| THERMAL_ERROR("could not get fan0 gpio protocol: %d\n", status); |
| return status; |
| } |
| |
| gpio_protocol_t fan1_gpio_proto; |
| status = device_get_protocol(components[COMPONENT_GPIO_FAN_1], ZX_PROTOCOL_GPIO, |
| &fan1_gpio_proto); |
| if (status != ZX_OK) { |
| THERMAL_ERROR("could not get fan1 gpio protocol: %d\n", status); |
| return status; |
| } |
| |
| ddk::ScpiProtocolClient scpi(&scpi_proto); |
| uint32_t sensor_id; |
| status = scpi.GetSensor("aml_thermal", &sensor_id); |
| if (status != ZX_OK) { |
| THERMAL_ERROR("could not thermal get sensor: %d\n", status); |
| return status; |
| } |
| |
| zx::port port; |
| status = zx::port::create(0, &port); |
| if (status != ZX_OK) { |
| THERMAL_ERROR("could not configure port: %d\n", status); |
| return status; |
| } |
| |
| auto thermal = std::make_unique<AmlThermal>(device, fan0_gpio_proto, fan1_gpio_proto, |
| scpi_proto, sensor_id, port); |
| |
| status = thermal->DdkAdd("vim-thermal", DEVICE_ADD_INVISIBLE); |
| if (status != ZX_OK) { |
| THERMAL_ERROR("could not add driver: %d\n", status); |
| return status; |
| } |
| |
| // Perform post-construction initialization before device is made visible. |
| status = thermal->Init(components[COMPONENT_SCPI]); |
| if (status != ZX_OK) { |
| THERMAL_ERROR("could not initialize thermal driver: %d\n", status); |
| thermal->DdkRemove(); |
| return status; |
| } |
| |
| thermal->DdkMakeVisible(); |
| |
| // devmgr is now in charge of this device. |
| __UNUSED auto _ = thermal.release(); |
| return ZX_OK; |
| } |
| |
| zx_status_t AmlThermal::DdkMessage(fidl_msg_t* msg, fidl_txn_t* txn) { |
| return fuchsia_hardware_thermal_Device_dispatch(this, txn, msg, &fidl_ops); |
| } |
| |
| zx_status_t AmlThermal::GetInfo(fidl_txn_t* txn) { |
| return fuchsia_hardware_thermal_DeviceGetInfo_reply(txn, ZX_ERR_NOT_SUPPORTED, nullptr); |
| } |
| |
| zx_status_t AmlThermal::GetDeviceInfo(fidl_txn_t* txn) { |
| return fuchsia_hardware_thermal_DeviceGetDeviceInfo_reply(txn, ZX_OK, &info_); |
| } |
| |
| zx_status_t AmlThermal::GetDvfsInfo(fuchsia_hardware_thermal_PowerDomain power_domain, |
| fidl_txn_t* txn) { |
| if (power_domain >= fuchsia_hardware_thermal_MAX_DVFS_DOMAINS) { |
| fuchsia_hardware_thermal_DeviceGetDvfsInfo_reply(txn, ZX_ERR_INVALID_ARGS, nullptr); |
| } |
| |
| scpi_opp_t opps; |
| auto status = scpi_.GetDvfsInfo(static_cast<uint8_t>(power_domain), &opps); |
| if (status != ZX_OK) { |
| return status; |
| } |
| return fuchsia_hardware_thermal_DeviceGetDvfsInfo_reply(txn, ZX_OK, &opps); |
| } |
| |
| zx_status_t AmlThermal::GetTemperature(fidl_txn_t* txn) { |
| return fuchsia_hardware_thermal_DeviceGetTemperature_reply(txn, ZX_OK, temperature_); |
| } |
| |
| zx_status_t AmlThermal::GetStateChangeEvent(fidl_txn_t* txn) { |
| return fuchsia_hardware_thermal_DeviceGetStateChangeEvent_reply(txn, ZX_ERR_NOT_SUPPORTED, |
| ZX_HANDLE_INVALID); |
| } |
| |
| zx_status_t AmlThermal::GetStateChangePort(fidl_txn_t* txn) { |
| zx::port dup; |
| zx_status_t status = port_.duplicate(ZX_RIGHT_SAME_RIGHTS, &dup); |
| return fuchsia_hardware_thermal_DeviceGetStateChangePort_reply(txn, status, dup.release()); |
| } |
| |
| zx_status_t AmlThermal::SetTrip(uint32_t id, uint32_t temp, fidl_txn_t* txn) { |
| return fuchsia_hardware_thermal_DeviceSetTrip_reply(txn, ZX_ERR_NOT_SUPPORTED); |
| } |
| |
| zx_status_t AmlThermal::GetDvfsOperatingPoint(fuchsia_hardware_thermal_PowerDomain power_domain, |
| fidl_txn_t* txn) { |
| if (power_domain == fuchsia_hardware_thermal_PowerDomain_BIG_CLUSTER_POWER_DOMAIN) { |
| fuchsia_hardware_thermal_DeviceGetDvfsOperatingPoint_reply( |
| txn, ZX_OK, static_cast<uint16_t>(cur_bigcluster_opp_idx_)); |
| } else if (power_domain == fuchsia_hardware_thermal_PowerDomain_LITTLE_CLUSTER_POWER_DOMAIN) { |
| fuchsia_hardware_thermal_DeviceGetDvfsOperatingPoint_reply( |
| txn, ZX_OK, static_cast<uint16_t>(cur_littlecluster_opp_idx_)); |
| } |
| |
| return fuchsia_hardware_thermal_DeviceGetDvfsOperatingPoint_reply(txn, ZX_ERR_INVALID_ARGS, 0); |
| } |
| |
| zx_status_t AmlThermal::SetDvfsOperatingPoint(uint16_t op_idx, |
| fuchsia_hardware_thermal_PowerDomain power_domain, |
| fidl_txn_t* txn) { |
| zx_status_t status = ZX_OK; |
| if (power_domain == fuchsia_hardware_thermal_PowerDomain_BIG_CLUSTER_POWER_DOMAIN) { |
| if (op_idx != cur_bigcluster_opp_idx_) { |
| status = scpi_.SetDvfsIdx(static_cast<uint8_t>(power_domain), op_idx); |
| } |
| cur_bigcluster_opp_idx_ = op_idx; |
| } else if (power_domain == fuchsia_hardware_thermal_PowerDomain_LITTLE_CLUSTER_POWER_DOMAIN) { |
| if (op_idx != cur_littlecluster_opp_idx_) { |
| status = scpi_.SetDvfsIdx(static_cast<uint8_t>(power_domain), op_idx); |
| } |
| cur_littlecluster_opp_idx_ = op_idx; |
| } else { |
| status = ZX_ERR_INVALID_ARGS; |
| } |
| |
| return fuchsia_hardware_thermal_DeviceSetDvfsOperatingPoint_reply(txn, status); |
| } |
| |
| zx_status_t AmlThermal::GetFanLevel(fidl_txn_t* txn) { |
| return fuchsia_hardware_thermal_DeviceGetFanLevel_reply(txn, ZX_OK, fan_level_); |
| } |
| |
| zx_status_t AmlThermal::SetFanLevel(uint32_t fan_level, fidl_txn_t* txn) { |
| return fuchsia_hardware_thermal_DeviceSetFanLevel_reply( |
| txn, SetFanLevel(static_cast<FanLevel>(fan_level))); |
| } |
| |
| void AmlThermal::DdkRelease() { |
| if (worker_) { |
| const auto status = thrd_join(worker_, nullptr); |
| if (status != thrd_success) { |
| THERMAL_ERROR("worker thread failed: %d\n", status); |
| } |
| } |
| delete this; |
| } |
| |
| void AmlThermal::DdkUnbind() { |
| sync_completion_signal(&quit_); |
| } |
| |
| zx_status_t AmlThermal::Init(zx_device_t* dev) { |
| auto status = fan0_gpio_.ConfigOut(0); |
| if (status != ZX_OK) { |
| THERMAL_ERROR("could not configure FAN_CTL0 gpio: %d\n", status); |
| return status; |
| } |
| |
| status = fan1_gpio_.ConfigOut(0); |
| if (status != ZX_OK) { |
| THERMAL_ERROR("could not configure FAN_CTL1 gpio: %d\n", status); |
| return status; |
| } |
| |
| size_t read; |
| status = device_get_metadata(dev, DEVICE_METADATA_THERMAL_CONFIG, &info_, |
| sizeof(fuchsia_hardware_thermal_ThermalDeviceInfo), &read); |
| if (status != ZX_OK) { |
| THERMAL_ERROR("could not read device metadata: %d\n", status); |
| return status; |
| } else if (read != sizeof(fuchsia_hardware_thermal_ThermalDeviceInfo)) { |
| THERMAL_ERROR("could not read device metadata\n"); |
| return ZX_ERR_NO_MEMORY; |
| } |
| |
| status = scpi_.GetDvfsInfo(fuchsia_hardware_thermal_PowerDomain_BIG_CLUSTER_POWER_DOMAIN, |
| &info_.opps[0]); |
| if (status != ZX_OK) { |
| THERMAL_ERROR("could not get bigcluster dvfs opps: %d\n", status); |
| return status; |
| } |
| |
| status = scpi_.GetDvfsInfo(fuchsia_hardware_thermal_PowerDomain_LITTLE_CLUSTER_POWER_DOMAIN, |
| &info_.opps[1]); |
| if (status != ZX_OK) { |
| THERMAL_ERROR("could not get littlecluster dvfs opps: %d\n", status); |
| return status; |
| } |
| |
| auto start_thread = [](void* arg) { return static_cast<AmlThermal*>(arg)->Worker(); }; |
| status = thrd_create_with_name(&worker_, start_thread, this, "aml_thermal_notify_thread"); |
| if (status != ZX_OK) { |
| THERMAL_ERROR("could not start worker thread: %d\n", status); |
| return status; |
| } |
| |
| return ZX_OK; |
| } |
| |
| zx_status_t AmlThermal::NotifyThermalDaemon(uint32_t trip_index) const { |
| zx_port_packet_t pkt; |
| pkt.key = trip_index; |
| pkt.type = ZX_PKT_TYPE_USER; |
| return port_.queue(&pkt); |
| } |
| |
| zx_status_t AmlThermal::SetFanLevel(FanLevel level) { |
| // Levels per individual system fan. |
| uint8_t fan0_level; |
| uint8_t fan1_level; |
| |
| switch (level) { |
| case FAN_L0: |
| fan0_level = 0; |
| fan1_level = 0; |
| break; |
| case FAN_L1: |
| fan0_level = 1; |
| fan1_level = 0; |
| break; |
| case FAN_L2: |
| fan0_level = 0; |
| fan1_level = 1; |
| break; |
| case FAN_L3: |
| fan0_level = 1; |
| fan1_level = 1; |
| break; |
| default: |
| THERMAL_ERROR("unknown fan level: %d\n", level); |
| return ZX_ERR_INVALID_ARGS; |
| } |
| |
| auto status = fan0_gpio_.Write(fan0_level); |
| if (status != ZX_OK) { |
| THERMAL_ERROR("could not set FAN_CTL0 level: %d\n", status); |
| return status; |
| } |
| |
| status = fan1_gpio_.Write(fan1_level); |
| if (status != ZX_OK) { |
| THERMAL_ERROR("could not set FAN_CTL1 level: %d\n", status); |
| return status; |
| } |
| |
| fan_level_ = level; |
| return ZX_OK; |
| } |
| |
| int AmlThermal::Worker() { |
| zx_status_t status; |
| uint32_t trip_pt = 0; |
| const uint32_t trip_limit = info_.num_trip_points - 1; |
| bool crit = false; |
| bool signal = false; |
| |
| // Notify thermal daemon of initial settings. |
| status = NotifyThermalDaemon(trip_pt); |
| if (status != ZX_OK) { |
| THERMAL_ERROR("could not notify thermal daemon: %d\n", status); |
| return status; |
| } |
| |
| do { |
| status = scpi_.GetSensorValue(sensor_id_, &temperature_); |
| if (status != ZX_OK) { |
| THERMAL_ERROR("could not read temperature: %d\n", status); |
| return status; |
| } |
| |
| signal = true; |
| if (trip_pt != trip_limit && temperature_ >= info_.trip_point_info[trip_pt + 1].up_temp) { |
| trip_pt++; // Triggered next trip point. |
| } else if (trip_pt && temperature_ < info_.trip_point_info[trip_pt].down_temp) { |
| if (trip_pt == trip_limit) { |
| // A prev trip point triggered, so the temperature is falling |
| // down below the critical temperature. Make a note of that. |
| crit = false; |
| } |
| trip_pt--; // Triggered prev trip point. |
| } else if (trip_pt == trip_limit && temperature_ >= info_.critical_temp && !crit) { |
| // The device temperature is crossing the critical temperature, set |
| // the CPU freq to the lowest possible setting to ensure the |
| // temperature doesn't rise any further. |
| crit = true; |
| status = scpi_.SetDvfsIdx( |
| fuchsia_hardware_thermal_PowerDomain_BIG_CLUSTER_POWER_DOMAIN, 0); |
| if (status != ZX_OK) { |
| THERMAL_ERROR("unable to set DVFS OPP for Big cluster\n"); |
| return status; |
| } |
| |
| status = scpi_.SetDvfsIdx( |
| fuchsia_hardware_thermal_PowerDomain_LITTLE_CLUSTER_POWER_DOMAIN, 0); |
| if (status != ZX_OK) { |
| THERMAL_ERROR("unable to set DVFS OPP for Little cluster\n"); |
| return status; |
| } |
| } else { |
| signal = false; |
| } |
| |
| if (signal) { |
| // Notify the thermal daemon about which trip point triggered. |
| status = NotifyThermalDaemon(trip_pt); |
| if (status != ZX_OK) { |
| THERMAL_ERROR("could not notify thermal daemon: %d\n", status); |
| return status; |
| } |
| } |
| |
| } while (sync_completion_wait(&quit_, ZX_SEC(kDeadline)) == ZX_ERR_TIMED_OUT); |
| return ZX_OK; |
| } |
| |
| static zx_driver_ops_t driver_ops = []() { |
| zx_driver_ops_t ops; |
| ops.version = DRIVER_OPS_VERSION; |
| ops.bind = AmlThermal::Create; |
| return ops; |
| }(); |
| |
| } // namespace thermal |
| |
| ZIRCON_DRIVER_BEGIN(aml_thermal, thermal::driver_ops, "zircon", "0.1", 3) |
| BI_ABORT_IF(NE, BIND_PLATFORM_DEV_VID, PDEV_VID_AMLOGIC), |
| BI_ABORT_IF(NE, BIND_PLATFORM_DEV_PID, PDEV_PID_AMLOGIC_S912), |
| BI_MATCH_IF(EQ, BIND_PLATFORM_DEV_DID, PDEV_DID_AMLOGIC_THERMAL), |
| ZIRCON_DRIVER_END(aml_thermal) |
