| // Copyright 2019 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 <ddk/debug.h> |
| #include <ddk/device.h> |
| #include <ddk/metadata.h> |
| #include <ddk/metadata/i2c.h> |
| #include <ddk/platform-defs.h> |
| #include <ddk/protocol/gpioimpl.h> |
| #include <ddk/protocol/platform/bus.h> |
| #include <ddk/protocol/platform/device.h> |
| #include <ddktl/protocol/gpioimpl.h> |
| #include <soc/as370/as370-i2c.h> |
| |
| #include "as370.h" |
| |
| namespace board_as370 { |
| |
| zx_status_t As370::I2cInit() { |
| zx_status_t status; |
| |
| constexpr uint32_t i2c_gpios[] = { |
| as370::kI2c0Sda, |
| as370::kI2c0Scl, |
| as370::kI2c1Sda, |
| as370::kI2c1Scl, |
| }; |
| |
| ddk::GpioImplProtocolClient gpio(parent()); |
| |
| if (!gpio.is_valid()) { |
| zxlogf(ERROR, "%s: Failed to create GPIO protocol client", __func__); |
| return ZX_ERR_INTERNAL; |
| } |
| |
| for (uint32_t i = 0; i < countof(i2c_gpios); i++) { |
| status = gpio.SetAltFunction(i2c_gpios[i], 1); // 1 == SDA/SCL pinmux setting. |
| if (status != ZX_OK) { |
| zxlogf(ERROR, "%s: GPIO SetAltFunction failed %d", __FUNCTION__, status); |
| return status; |
| } |
| } |
| |
| constexpr pbus_mmio_t i2c_mmios[] = { |
| { |
| .base = as370::kI2c0Base, |
| .length = as370::kI2c0Size, |
| }, |
| { |
| .base = as370::kI2c1Base, |
| .length = as370::kI2c1Size, |
| }, |
| }; |
| |
| constexpr pbus_irq_t i2c_irqs[] = { |
| { |
| .irq = as370::kI2c0Irq, |
| .mode = ZX_INTERRUPT_MODE_LEVEL_HIGH, |
| }, |
| { |
| .irq = as370::kI2c1Irq, |
| .mode = ZX_INTERRUPT_MODE_LEVEL_HIGH, |
| }, |
| }; |
| |
| // I2C channels for as370 synaptics |
| constexpr i2c_channel_t synaptics_i2c_channels[] = { |
| // For audio out |
| { |
| .bus_id = 0, |
| .address = 0x31, |
| .vid = 0, |
| .pid = 0, |
| .did = 0, |
| }, |
| // For power regulator |
| { |
| .bus_id = 0, |
| .address = 0x66, |
| .vid = 0, |
| .pid = 0, |
| .did = 0, |
| }, |
| }; |
| |
| // I2C channels for as370 visalia |
| constexpr i2c_channel_t visalia_i2c_channels[] = { |
| // For audio out |
| { |
| .bus_id = 0, |
| .address = 0x31, |
| .vid = 0, |
| .pid = 0, |
| .did = 0, |
| }, |
| /* TI LP5018 LED driver */ |
| { |
| .bus_id = 0, |
| .address = 0x29, |
| .vid = 0, |
| .pid = 0, |
| .did = 0, |
| }, |
| // For power regulator |
| { |
| .bus_id = 0, |
| .address = 0x66, |
| .vid = 0, |
| .pid = 0, |
| .did = 0, |
| }, |
| /* Cypress touch sensor */ |
| { |
| .bus_id = 0, |
| .address = 0x37, |
| .vid = 0, |
| .pid = 0, |
| .did = 0, |
| }, |
| }; |
| |
| const pbus_metadata_t synaptics_i2c_metadata[] = { |
| { |
| .type = DEVICE_METADATA_I2C_CHANNELS, |
| .data_buffer = &synaptics_i2c_channels, |
| .data_size = sizeof(synaptics_i2c_channels), |
| }, |
| }; |
| |
| const pbus_metadata_t visalia_i2c_metadata[] = { |
| { |
| .type = DEVICE_METADATA_I2C_CHANNELS, |
| .data_buffer = &visalia_i2c_channels, |
| .data_size = sizeof(visalia_i2c_channels), |
| }, |
| }; |
| |
| pbus_dev_t i2c_dev = {}; |
| i2c_dev.name = "i2c"; |
| i2c_dev.vid = PDEV_VID_GENERIC; |
| i2c_dev.pid = PDEV_PID_GENERIC; |
| i2c_dev.did = PDEV_DID_DW_I2C; |
| i2c_dev.mmio_list = i2c_mmios; |
| i2c_dev.mmio_count = countof(i2c_mmios); |
| i2c_dev.irq_list = i2c_irqs; |
| i2c_dev.irq_count = countof(i2c_irqs); |
| |
| if (board_info_.vid == PDEV_VID_SYNAPTICS && board_info_.pid == PDEV_PID_SYNAPTICS_AS370) { |
| i2c_dev.metadata_list = synaptics_i2c_metadata; |
| i2c_dev.metadata_count = countof(synaptics_i2c_metadata); |
| } else if (board_info_.vid == PDEV_VID_GOOGLE && board_info_.pid == PDEV_PID_VISALIA) { |
| i2c_dev.metadata_list = visalia_i2c_metadata; |
| i2c_dev.metadata_count = countof(visalia_i2c_metadata); |
| } else { |
| return ZX_ERR_NOT_SUPPORTED; |
| } |
| |
| status = pbus_.DeviceAdd(&i2c_dev); |
| if (status != ZX_OK) { |
| zxlogf(ERROR, "%s: DeviceAdd failed %d", __FUNCTION__, status); |
| return status; |
| } |
| |
| return ZX_OK; |
| } |
| |
| } // namespace board_as370 |