| // 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/imx8m/imx8m.h> |
| #include <soc/imx8m/imx8m-hw.h> |
| #include <soc/imx8m/imx8m-iomux.h> |
| |
| #include <zircon/assert.h> |
| #include <zircon/process.h> |
| #include <zircon/syscalls.h> |
| #include <zircon/threads.h> |
| |
| #include "imx8mevk.h" |
| |
| static pbus_mmio_t imx8mevk_display_mmios[] = { |
| { |
| .base = IMX8M_AIPS_DC_MST1_BASE, |
| .length = IMX8M_AIPS_LENGTH, |
| }, |
| }; |
| |
| static const pbus_bti_t imx8mevk_display_btis[] = { |
| { |
| .iommu_index = 0, |
| .bti_id = BTI_DISPLAY, |
| }, |
| }; |
| |
| static const pbus_dev_t display_dev = { |
| .name = "display", |
| .vid = PDEV_VID_NXP, |
| .pid = PDEV_PID_IMX8MEVK, |
| .did = PDEV_DID_IMX_DISPLAY, |
| .mmios = imx8mevk_display_mmios, |
| .mmio_count = countof(imx8mevk_display_mmios), |
| .btis = imx8mevk_display_btis, |
| .bti_count = countof(imx8mevk_display_btis), |
| }; |
| |
| static zx_status_t imx8mevk_set_mode(void* ctx, usb_mode_t mode) { |
| return ZX_OK; |
| } |
| |
| usb_mode_switch_protocol_ops_t usb_mode_switch_ops = { |
| .set_mode = imx8mevk_set_mode, |
| }; |
| |
| |
| /* iMX8M EVK Pin Mux Table TODO: Add all supported peripherals on EVK board */ |
| iomux_cfg_struct imx8mevk_pinmux[] = { |
| // UART1 RX |
| MAKE_PIN_CFG_UART(0, SW_MUX_CTL_PAD_UART1_RXD, |
| SW_PAD_CTL_PAD_UART1_RXD, |
| UART1_RXD_SELECT_INPUT), |
| // UART1 TX |
| MAKE_PIN_CFG_UART(0, SW_MUX_CTL_PAD_UART1_TXD, |
| SW_PAD_CTL_PAD_UART1_TXD, |
| 0x000ULL), |
| |
| // PWR_LED (used for GPIO Driver) |
| MAKE_PIN_CFG_DEFAULT(0, SW_MUX_CTL_PAD_GPIO1_IO13), |
| |
| // eMMC (USDHC1) Pinmux |
| MAKE_PIN_CFG_USDHC_CLK(0, SW_MUX_CTL_PAD_SD1_CLK, |
| SW_PAD_CTL_PAD_SD1_CLK), |
| MAKE_PIN_CFG_USDHC(0, SW_MUX_CTL_PAD_SD1_CMD, |
| SW_PAD_CTL_PAD_SD1_CMD), |
| MAKE_PIN_CFG_USDHC(0, SW_MUX_CTL_PAD_SD1_DATA0, |
| SW_PAD_CTL_PAD_SD1_DATA0), |
| MAKE_PIN_CFG_USDHC(0, SW_MUX_CTL_PAD_SD1_DATA1, |
| SW_PAD_CTL_PAD_SD1_DATA1), |
| MAKE_PIN_CFG_USDHC(0, SW_MUX_CTL_PAD_SD1_DATA2, |
| SW_PAD_CTL_PAD_SD1_DATA2), |
| MAKE_PIN_CFG_USDHC(0, SW_MUX_CTL_PAD_SD1_DATA3, |
| SW_PAD_CTL_PAD_SD1_DATA3), |
| MAKE_PIN_CFG_USDHC(0, SW_MUX_CTL_PAD_SD1_DATA4, |
| SW_PAD_CTL_PAD_SD1_DATA4), |
| MAKE_PIN_CFG_USDHC(0, SW_MUX_CTL_PAD_SD1_DATA5, |
| SW_PAD_CTL_PAD_SD1_DATA5), |
| MAKE_PIN_CFG_USDHC(0, SW_MUX_CTL_PAD_SD1_DATA6, |
| SW_PAD_CTL_PAD_SD1_DATA6), |
| MAKE_PIN_CFG_USDHC(0, SW_MUX_CTL_PAD_SD1_DATA7, |
| SW_PAD_CTL_PAD_SD1_DATA7), |
| MAKE_PIN_CFG_USDHC_CLK(0, SW_MUX_CTL_PAD_SD1_STROBE, |
| SW_PAD_CTL_PAD_SD1_STROBE), |
| |
| MAKE_PIN_CFG_DEFAULT(5, SW_MUX_CTL_PAD_SD1_RESET_B), |
| }; |
| |
| static void imx8mevk_bus_release(void* ctx) { |
| imx8mevk_bus_t* bus = ctx; |
| free(bus); |
| } |
| |
| static zx_protocol_device_t imx8mevk_bus_device_protocol = { |
| .version = DEVICE_OPS_VERSION, |
| .release = imx8mevk_bus_release, |
| }; |
| |
| static int imx8mevk_start_thread(void* arg) { |
| zx_status_t status; |
| imx8mevk_bus_t* bus = arg; |
| |
| bus->usb_mode_switch.ops = &usb_mode_switch_ops; |
| bus->usb_mode_switch.ctx = bus; |
| // TODO: Power and Clocks |
| |
| // start the gpio driver first so we can do our initial pinmux |
| if ((status = imx8m_gpio_init(bus)) != ZX_OK) { |
| zxlogf(ERROR, "%s: failed %d\n", __FUNCTION__, status); |
| goto fail; |
| } |
| |
| // Pinmux |
| for (unsigned i = 0; i < sizeof(imx8mevk_pinmux)/sizeof(imx8mevk_pinmux[0]); i++) { |
| gpio_set_alt_function(&bus->gpio, 0, imx8mevk_pinmux[i]); |
| } |
| |
| if ((status = imx_usb_init(bus)) != ZX_OK) { |
| zxlogf(ERROR, "%s: failed %d\n", __FUNCTION__, status); |
| goto fail; |
| } |
| |
| if ((status = imx_gpu_init(bus)) != ZX_OK) { |
| zxlogf(ERROR, "%s: imx_gpu_init failed %d\n", __FUNCTION__, status); |
| goto fail; |
| } |
| |
| if ((status = imx8m_sdhci_init(bus)) != ZX_OK) { |
| zxlogf(ERROR, "%s: failed %d\n", __FUNCTION__, status); |
| goto fail; |
| } |
| |
| status = pbus_register_protocol(&bus->pbus, ZX_PROTOCOL_USB_MODE_SWITCH, &bus->usb_mode_switch); |
| if (status != ZX_OK) { |
| goto fail; |
| } |
| |
| if ((status = pbus_device_add(&bus->pbus, &display_dev)) != ZX_OK) { |
| zxlogf(ERROR, "%s could not add display_dev: %d\n", __FUNCTION__, 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 imx8mevk_bus_bind(void* ctx, zx_device_t* parent) { |
| imx8mevk_bus_t* bus = calloc(1, sizeof(imx8mevk_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, "%s: Could not get ZX_PROTOCOL_IOMMU\n", __FUNCTION__); |
| goto fail; |
| } |
| |
| status = iommu_get_bti(&bus->iommu, 0, BTI_BOARD, &bus->bti_handle); |
| if (status != ZX_OK) { |
| zxlogf(ERROR, "%s: iommu_get_bti failed %d\n", __FUNCTION__, status); |
| goto fail; |
| } |
| |
| device_add_args_t args = { |
| .version = DEVICE_ADD_ARGS_VERSION, |
| .name = "imx8mevk", |
| .ctx = bus, |
| .ops = &imx8mevk_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, imx8mevk_start_thread, bus, "imx8mevk_start_thread"); |
| if (thrd_rc != thrd_success) { |
| status = thrd_status_to_zx_status(thrd_rc); |
| goto fail; |
| } |
| |
| return ZX_OK; |
| |
| fail: |
| zxlogf(ERROR, "%s failed. %d\n", __FUNCTION__, status); |
| imx8mevk_bus_release(bus); |
| return status; |
| } |
| |
| static zx_driver_ops_t imx8mevk_bus_driver_ops = { |
| .version = DRIVER_OPS_VERSION, |
| .bind = imx8mevk_bus_bind, |
| }; |
| |
| ZIRCON_DRIVER_BEGIN(imx8mevk_bus, imx8mevk_bus_driver_ops, "zircon", "0.1", 6) |
| BI_ABORT_IF(NE, BIND_PROTOCOL, ZX_PROTOCOL_PLATFORM_BUS), |
| BI_GOTO_IF(NE, BIND_PLATFORM_DEV_VID, PDEV_VID_NXP, 0), |
| BI_MATCH_IF(EQ, BIND_PLATFORM_DEV_PID, PDEV_PID_IMX8MEVK), |
| BI_LABEL(0), |
| BI_ABORT_IF(NE, BIND_PLATFORM_DEV_VID, PDEV_VID_GOOGLE), |
| BI_MATCH_IF(EQ, BIND_PLATFORM_DEV_PID, PDEV_PID_MADRONE), |
| ZIRCON_DRIVER_END(imx8mevk_bus) |