| // 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 <limits.h> |
| |
| #include <ddk/debug.h> |
| #include <ddk/device.h> |
| #include <ddk/metadata.h> |
| #include <ddk/metadata/i2c.h> |
| #include <ddk/platform-defs.h> |
| #include <soc/aml-a311d/a311d-gpio.h> |
| #include <soc/aml-a311d/a311d-hw.h> |
| |
| #include "vim3.h" |
| |
| namespace vim3 { |
| |
| // Only the AO and EE_M3 i2c busses are used on VIM3 |
| |
| static const pbus_mmio_t i2c_mmios[] = { |
| { |
| .base = A311D_I2C_AOBUS_BASE, |
| .length = A311D_I2C_AOBUS_LENGTH, |
| }, |
| { |
| .base = A311D_EE_I2C_M3_BASE, |
| .length = A311D_I2C_AOBUS_LENGTH, |
| }, |
| }; |
| |
| static const pbus_irq_t i2c_irqs[] = { |
| { |
| .irq = A311D_I2C_AO_IRQ, |
| .mode = ZX_INTERRUPT_MODE_EDGE_HIGH, |
| }, |
| { |
| .irq = A311D_I2C_M3_IRQ, |
| .mode = ZX_INTERRUPT_MODE_EDGE_HIGH, |
| }, |
| }; |
| |
| static const i2c_channel_t i2c_channels[] = { |
| // RTC |
| { |
| .bus_id = 0, |
| .address = 0x51, |
| .vid = PDEV_VID_NXP, |
| .pid = PDEV_PID_GENERIC, |
| .did = PDEV_DID_PCF8563_RTC, |
| }, |
| // STM8s microcontroller |
| { |
| .bus_id = 0, |
| .address = 0x18, |
| .vid = PDEV_VID_KHADAS, |
| .pid = PDEV_PID_VIM3, |
| .did = PDEV_DID_VIM3_MCU, |
| }, |
| #if 0 // placeholder until driver implemented and vid/pid/did assigned |
| // bus_ids and addresses are correct |
| // TCA6408 (U17) IO expander (used for various lcd/cam signals and LEDs) |
| { |
| .bus_id = 0, |
| .address = 0x20, |
| .vid = 0, |
| .pid = 0, |
| .did = 0, |
| }, |
| // KXTJ3 (U18) 3 axis accelerometer |
| { |
| .bus_id = 0, |
| .address = 0x0E, |
| .vid = 0, |
| .pid = 0, |
| .did = 0, |
| }, |
| #endif |
| }; |
| |
| static const pbus_metadata_t i2c_metadata[] = {{ |
| .type = DEVICE_METADATA_I2C_CHANNELS, |
| .data_buffer = &i2c_channels, |
| .data_size = sizeof(i2c_channels), |
| }}; |
| zx_status_t Vim3::I2cInit() { |
| pbus_dev_t i2c_dev = {}; |
| i2c_dev.name = "i2c"; |
| i2c_dev.vid = PDEV_VID_AMLOGIC; |
| i2c_dev.pid = PDEV_PID_GENERIC; |
| i2c_dev.did = PDEV_DID_AMLOGIC_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); |
| i2c_dev.metadata_list = i2c_metadata; |
| i2c_dev.metadata_count = countof(i2c_metadata); |
| |
| // AO |
| gpio_impl_.SetAltFunction(A311D_GPIOAO(2), A311D_GPIOAO_2_M0_SCL_FN); |
| gpio_impl_.SetAltFunction(A311D_GPIOAO(3), 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_impl_.SetAltFunction(A311D_GPIOA(15), A311D_GPIOA_15_I2C_EE_M3_SCL_FN); |
| gpio_impl_.SetAltFunction(A311D_GPIOA(14), A311D_GPIOA_14_I2C_EE_M3_SDA_FN); |
| |
| zx_status_t status = pbus_.DeviceAdd(&i2c_dev); |
| if (status != ZX_OK) { |
| zxlogf(ERROR, "I2cInit: DeviceAdd failed: %d", status); |
| return status; |
| } |
| |
| return ZX_OK; |
| } |
| } // namespace vim3 |