| // Copyright 2020 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 <fidl/fuchsia.hardware.platform.bus/cpp/driver/fidl.h> |
| #include <fidl/fuchsia.hardware.platform.bus/cpp/fidl.h> |
| #include <lib/ddk/debug.h> |
| #include <lib/ddk/device.h> |
| #include <lib/ddk/metadata.h> |
| #include <lib/ddk/platform-defs.h> |
| #include <lib/driver/component/cpp/composite_node_spec.h> |
| #include <lib/driver/component/cpp/node_add_args.h> |
| #include <limits.h> |
| |
| #include <span> |
| #include <vector> |
| |
| #include <bind/fuchsia/cpp/bind.h> |
| #include <bind/fuchsia/focaltech/platform/cpp/bind.h> |
| #include <bind/fuchsia/gpio/cpp/bind.h> |
| #include <bind/fuchsia/hardware/i2c/cpp/bind.h> |
| #include <bind/fuchsia/i2c/cpp/bind.h> |
| #include <soc/aml-a311d/a311d-gpio.h> |
| #include <soc/aml-a311d/a311d-hw.h> |
| |
| #include "src/devices/lib/fidl-metadata/i2c.h" |
| #include "vim3.h" |
| |
| namespace fdf { |
| using namespace fuchsia_driver_framework; |
| } // namespace fdf |
| |
| namespace vim3 { |
| namespace fpbus = fuchsia_hardware_platform_bus; |
| using i2c_channel_t = fidl_metadata::i2c::Channel; |
| |
| // Only the AO and EE_M3 i2c busses are used on VIM3 |
| |
| struct I2cBus { |
| uint32_t bus_id; |
| zx_paddr_t mmio; |
| uint32_t irq; |
| cpp20::span<const i2c_channel_t> channels; |
| }; |
| |
| constexpr i2c_channel_t i2c_ao_channels[]{ |
| // RTC |
| { |
| .address = 0x51, |
| .vid = PDEV_VID_NXP, |
| .pid = PDEV_PID_GENERIC, |
| .did = PDEV_DID_PCF8563_RTC, |
| }, |
| // STM8s microcontroller |
| { |
| .address = 0x18, |
| .vid = 0, |
| .pid = 0, |
| .did = 0, |
| }, |
| // USB PD |
| { |
| .address = 0x22, |
| .vid = 0, |
| .pid = 0, |
| .did = 0, |
| }, |
| // TCA6408 (U17) IO expander (used for various lcd/cam signals and LEDs) |
| { |
| .address = 0x20, |
| .vid = 0, |
| .pid = 0, |
| .did = 0, |
| }, |
| }; |
| #if 0 |
| // placeholder until driver implemented and vid/pid/did assigned |
| // bus_ids and addresses are correct |
| // KXTJ3 (U18) 3 axis accelerometer |
| { |
| .address = 0x0E, |
| .vid = 0, |
| .pid = 0, |
| .did = 0, |
| }, |
| }; |
| #endif |
| |
| constexpr i2c_channel_t i2c_ee_m3_channels[]{ |
| // SDIO test rig on the J4 GPIO header. May or may not be connected. |
| { |
| .address = 0x32, |
| .vid = 0, |
| .pid = 0, |
| .did = 0, |
| }, |
| // FT5336 touch panel interrupt, used by TS050 touchscreen. |
| { |
| .address = bind_fuchsia_focaltech_platform::BIND_I2C_ADDRESS_TOUCH, |
| .vid = 0, |
| .pid = 0, |
| .did = 0, |
| }, |
| }; |
| |
| constexpr I2cBus kBuses[]{ |
| { |
| .bus_id = bind_fuchsia_i2c::BIND_I2C_BUS_ID_I2C_A0_0, |
| .mmio = A311D_I2C_AOBUS_BASE, |
| .irq = A311D_I2C_AO_IRQ, |
| .channels{i2c_ao_channels, std::size(i2c_ao_channels)}, |
| }, |
| { |
| .bus_id = bind_fuchsia_i2c::BIND_I2C_BUS_ID_I2C_3, |
| .mmio = A311D_EE_I2C_M3_BASE, |
| .irq = A311D_I2C_M3_IRQ, |
| .channels{i2c_ee_m3_channels, std::size(i2c_ee_m3_channels)}, |
| }, |
| }; |
| |
| zx_status_t AddI2cBus(const I2cBus& bus, |
| const fdf::WireSyncClient<fuchsia_hardware_platform_bus::PlatformBus>& pbus) { |
| const std::vector<fpbus::Mmio> mmios{ |
| {{ |
| .base = bus.mmio, |
| .length = A311D_I2C_LENGTH, |
| }}, |
| }; |
| |
| const std::vector<fpbus::Irq> irqs{ |
| {{ |
| .irq = bus.irq, |
| .mode = ZX_INTERRUPT_MODE_EDGE_HIGH, |
| }}, |
| }; |
| |
| char name[32]; |
| snprintf(name, sizeof(name), "i2c-%u", bus.bus_id); |
| |
| fpbus::Node i2c_dev; |
| i2c_dev.name() = name; |
| i2c_dev.vid() = PDEV_VID_AMLOGIC; |
| i2c_dev.pid() = PDEV_PID_GENERIC; |
| i2c_dev.did() = PDEV_DID_AMLOGIC_I2C; |
| i2c_dev.instance_id() = bus.bus_id; |
| i2c_dev.mmio() = mmios; |
| i2c_dev.irq() = irqs; |
| |
| auto i2c_metadata_fidl = fidl_metadata::i2c::I2CChannelsToFidl(bus.bus_id, bus.channels); |
| if (i2c_metadata_fidl.is_error()) { |
| zxlogf(ERROR, "Failed to FIDL encode I2C channels: %s", i2c_metadata_fidl.status_string()); |
| return i2c_metadata_fidl.error_value(); |
| } |
| |
| auto& data = i2c_metadata_fidl.value(); |
| |
| std::vector<fpbus::Metadata> i2c_metadata{ |
| {{ |
| .type = DEVICE_METADATA_I2C_CHANNELS, |
| .data = std::move(data), |
| }}, |
| }; |
| i2c_dev.metadata() = std::move(i2c_metadata); |
| |
| fidl::Arena<> fidl_arena; |
| fdf::Arena arena('I2C_'); |
| const std::vector<fdf::BindRule> kGpioInitRules = std::vector{ |
| fdf::MakeAcceptBindRule(bind_fuchsia::INIT_STEP, bind_fuchsia_gpio::BIND_INIT_STEP_GPIO), |
| }; |
| const std::vector<fdf::NodeProperty> kGpioInitProps = std::vector{ |
| fdf::MakeProperty(bind_fuchsia::INIT_STEP, bind_fuchsia_gpio::BIND_INIT_STEP_GPIO), |
| }; |
| const std::vector<fdf::ParentSpec> kI2cParents = std::vector{ |
| fdf::ParentSpec{{kGpioInitRules, kGpioInitProps}}, |
| }; |
| |
| const fdf::CompositeNodeSpec i2c_spec{{name, kI2cParents}}; |
| const auto result = pbus.buffer(arena)->AddCompositeNodeSpec(fidl::ToWire(fidl_arena, i2c_dev), |
| fidl::ToWire(fidl_arena, i2c_spec)); |
| if (!result.ok()) { |
| zxlogf(ERROR, "Request to add I2C bus %u failed: %s", bus.bus_id, |
| result.FormatDescription().data()); |
| return result.status(); |
| } |
| if (result->is_error()) { |
| zxlogf(ERROR, "Failed to add I2C bus %u: %s", bus.bus_id, |
| zx_status_get_string(result->error_value())); |
| return result->error_value(); |
| } |
| |
| return ZX_OK; |
| } |
| |
| zx_status_t Vim3::I2cInit() { |
| // AO |
| gpio_init_steps_.push_back({A311D_GPIOAO(2), GpioSetAltFunction(A311D_GPIOAO_2_M0_SCL_FN)}); |
| gpio_init_steps_.push_back({A311D_GPIOAO(3), GpioSetAltFunction(A311D_GPIOAO_3_M0_SDA_FN)}); |
| |
| // EE - M3 |
| // Used on J13(pins 3,4), M.2 socket(pins 40,42), and J4(pins 22,23) |
| gpio_init_steps_.push_back( |
| {A311D_GPIOA(15), GpioSetAltFunction(A311D_GPIOA_15_I2C_EE_M3_SCL_FN)}); |
| gpio_init_steps_.push_back( |
| {A311D_GPIOA(14), GpioSetAltFunction(A311D_GPIOA_14_I2C_EE_M3_SDA_FN)}); |
| |
| for (const I2cBus& bus : kBuses) { |
| AddI2cBus(bus, pbus_); |
| } |
| |
| return ZX_OK; |
| } |
| } // namespace vim3 |