| // 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 <assert.h> |
| #include <limits.h> |
| #include <stdint.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <threads.h> |
| #include <unistd.h> |
| |
| #include <ddk/binding.h> |
| #include <ddk/debug.h> |
| #include <ddk/device.h> |
| #include <ddk/driver.h> |
| #include <ddk/protocol/platform-defs.h> |
| #include <hw/reg.h> |
| |
| #include <soc/aml-s912/s912-hw.h> |
| #include <soc/aml-s912/s912-gpio.h> |
| |
| #include <zircon/assert.h> |
| #include <zircon/process.h> |
| #include <zircon/syscalls.h> |
| #include <zircon/threads.h> |
| |
| #include "aml.h" |
| |
| static void aml_bus_release(void* ctx) { |
| aml_bus_t* bus = ctx; |
| free(bus); |
| } |
| |
| static zx_protocol_device_t aml_bus_device_protocol = { |
| .version = DEVICE_OPS_VERSION, |
| .release = aml_bus_release, |
| }; |
| |
| static int aml_start_thread(void* arg) { |
| aml_bus_t* bus = arg; |
| zx_status_t status; |
| |
| if ((status = aml_gpio_init(bus)) != ZX_OK) { |
| zxlogf(ERROR, "aml_gpio_init failed: %d\n", status); |
| goto fail; |
| } |
| /* |
| if ((status = aml_i2c_init(bus)) != ZX_OK) { |
| zxlogf(ERROR, "aml_i2c_init failed: %d\n", status); |
| goto fail; |
| } |
| */ |
| if ((status = aml_usb_init(bus)) != ZX_OK) { |
| zxlogf(ERROR, "aml_usb_init failed: %d\n", status); |
| goto fail; |
| } |
| |
| return ZX_OK; |
| fail: |
| zxlogf(ERROR, "aml_start_thread failed, not all devices have been initialized\n"); |
| return status; |
| } |
| |
| static zx_status_t aml_bus_bind(void* ctx, zx_device_t* parent) { |
| aml_bus_t* bus = calloc(1, sizeof(aml_bus_t)); |
| if (!bus) { |
| return ZX_ERR_NO_MEMORY; |
| } |
| bus->parent = parent; |
| |
| zx_status_t status = device_get_protocol(parent, ZX_PROTOCOL_PLATFORM_BUS, &bus->pbus); |
| if (status != ZX_OK) { |
| goto fail; |
| } |
| |
| // get default BTI from the dummy IOMMU implementation in the platform bus |
| status = device_get_protocol(parent, ZX_PROTOCOL_IOMMU, &bus->iommu); |
| if (status != ZX_OK) { |
| zxlogf(ERROR, "aml_bus_bind: could not get ZX_PROTOCOL_IOMMU\n"); |
| goto fail; |
| } |
| |
| device_add_args_t args = { |
| .version = DEVICE_ADD_ARGS_VERSION, |
| .name = "aml-bus", |
| .ctx = bus, |
| .ops = &aml_bus_device_protocol, |
| .flags = DEVICE_ADD_NON_BINDABLE, |
| }; |
| |
| status = device_add(parent, &args, NULL); |
| if (status != ZX_OK) { |
| goto fail; |
| } |
| |
| thrd_t t; |
| int thrd_rc = thrd_create_with_name(&t, aml_start_thread, bus, "aml_start_thread"); |
| if (thrd_rc != thrd_success) { |
| status = thrd_status_to_zx_status(thrd_rc); |
| goto fail; |
| } |
| return ZX_OK; |
| |
| fail: |
| zxlogf(ERROR, "aml_bus_bind failed %d\n", status); |
| aml_bus_release(bus); |
| return status; |
| } |
| |
| static zx_driver_ops_t aml_bus_driver_ops = { |
| .version = DRIVER_OPS_VERSION, |
| .bind = aml_bus_bind, |
| }; |
| |
| ZIRCON_DRIVER_BEGIN(aml_bus, aml_bus_driver_ops, "zircon", "0.1", 3) |
| BI_ABORT_IF(NE, BIND_PROTOCOL, ZX_PROTOCOL_PLATFORM_BUS), |
| BI_ABORT_IF(NE, BIND_PLATFORM_DEV_VID, PDEV_VID_AMLOGIC), |
| BI_MATCH_IF(EQ, BIND_PLATFORM_DEV_PID, PDEV_PID_AMLOGIC_S905D2), |
| ZIRCON_DRIVER_END(vim_bus) |