// SPDX-License-Identifier: GPL-2.0-or-later /* * Registration of Cobalt UART platform device. * * Copyright (C) 2007 Yoichi Yuasa <yuasa@linux-mips.org> */ #include <linux/errno.h> #include <linux/init.h> #include <linux/ioport.h> #include <linux/platform_device.h> #include <linux/serial_8250.h> #include <cobalt.h> #include <irq.h> static struct resource cobalt_uart_resource[] __initdata = { { .start = 0x1c800000, .end = 0x1c800007, .flags = IORESOURCE_MEM, }, { .start = SERIAL_IRQ, .end = SERIAL_IRQ, .flags = IORESOURCE_IRQ, }, }; static struct plat_serial8250_port cobalt_serial8250_port[] = { { .irq = SERIAL_IRQ, .uartclk = 18432000, .iotype = UPIO_MEM, .flags = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, .mapbase = 0x1c800000, }, {}, }; static __init int cobalt_uart_add(void) { struct platform_device *pdev; int retval; /* * Cobalt Qube1 has no UART. */ if (cobalt_board_id == COBALT_BRD_ID_QUBE1) return 0; pdev = platform_device_alloc("serial8250", -1); if (!pdev) return -ENOMEM; pdev->id = PLAT8250_DEV_PLATFORM; pdev->dev.platform_data = cobalt_serial8250_port; retval = platform_device_add_resources(pdev, cobalt_uart_resource, ARRAY_SIZE(cobalt_uart_resource)); if (retval) goto err_free_device; retval = platform_device_add(pdev); if (retval) goto err_free_device; return 0; err_free_device: platform_device_put(pdev); return retval; } device_initcall(cobalt_uart_add);