1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-or-later
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Registration of Cobalt UART platform device.
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright (C) 2007 Yoichi Yuasa <yuasa@linux-mips.org>
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun #include <linux/errno.h>
8*4882a593Smuzhiyun #include <linux/init.h>
9*4882a593Smuzhiyun #include <linux/ioport.h>
10*4882a593Smuzhiyun #include <linux/platform_device.h>
11*4882a593Smuzhiyun #include <linux/serial_8250.h>
12*4882a593Smuzhiyun
13*4882a593Smuzhiyun #include <cobalt.h>
14*4882a593Smuzhiyun #include <irq.h>
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun static struct resource cobalt_uart_resource[] __initdata = {
17*4882a593Smuzhiyun {
18*4882a593Smuzhiyun .start = 0x1c800000,
19*4882a593Smuzhiyun .end = 0x1c800007,
20*4882a593Smuzhiyun .flags = IORESOURCE_MEM,
21*4882a593Smuzhiyun },
22*4882a593Smuzhiyun {
23*4882a593Smuzhiyun .start = SERIAL_IRQ,
24*4882a593Smuzhiyun .end = SERIAL_IRQ,
25*4882a593Smuzhiyun .flags = IORESOURCE_IRQ,
26*4882a593Smuzhiyun },
27*4882a593Smuzhiyun };
28*4882a593Smuzhiyun
29*4882a593Smuzhiyun static struct plat_serial8250_port cobalt_serial8250_port[] = {
30*4882a593Smuzhiyun {
31*4882a593Smuzhiyun .irq = SERIAL_IRQ,
32*4882a593Smuzhiyun .uartclk = 18432000,
33*4882a593Smuzhiyun .iotype = UPIO_MEM,
34*4882a593Smuzhiyun .flags = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
35*4882a593Smuzhiyun .mapbase = 0x1c800000,
36*4882a593Smuzhiyun },
37*4882a593Smuzhiyun {},
38*4882a593Smuzhiyun };
39*4882a593Smuzhiyun
cobalt_uart_add(void)40*4882a593Smuzhiyun static __init int cobalt_uart_add(void)
41*4882a593Smuzhiyun {
42*4882a593Smuzhiyun struct platform_device *pdev;
43*4882a593Smuzhiyun int retval;
44*4882a593Smuzhiyun
45*4882a593Smuzhiyun /*
46*4882a593Smuzhiyun * Cobalt Qube1 has no UART.
47*4882a593Smuzhiyun */
48*4882a593Smuzhiyun if (cobalt_board_id == COBALT_BRD_ID_QUBE1)
49*4882a593Smuzhiyun return 0;
50*4882a593Smuzhiyun
51*4882a593Smuzhiyun pdev = platform_device_alloc("serial8250", -1);
52*4882a593Smuzhiyun if (!pdev)
53*4882a593Smuzhiyun return -ENOMEM;
54*4882a593Smuzhiyun
55*4882a593Smuzhiyun pdev->id = PLAT8250_DEV_PLATFORM;
56*4882a593Smuzhiyun pdev->dev.platform_data = cobalt_serial8250_port;
57*4882a593Smuzhiyun
58*4882a593Smuzhiyun retval = platform_device_add_resources(pdev, cobalt_uart_resource, ARRAY_SIZE(cobalt_uart_resource));
59*4882a593Smuzhiyun if (retval)
60*4882a593Smuzhiyun goto err_free_device;
61*4882a593Smuzhiyun
62*4882a593Smuzhiyun retval = platform_device_add(pdev);
63*4882a593Smuzhiyun if (retval)
64*4882a593Smuzhiyun goto err_free_device;
65*4882a593Smuzhiyun
66*4882a593Smuzhiyun return 0;
67*4882a593Smuzhiyun
68*4882a593Smuzhiyun err_free_device:
69*4882a593Smuzhiyun platform_device_put(pdev);
70*4882a593Smuzhiyun
71*4882a593Smuzhiyun return retval;
72*4882a593Smuzhiyun }
73*4882a593Smuzhiyun device_initcall(cobalt_uart_add);
74