1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * arch/arm/mach-iop32x/iq80321.c
4 *
5 * Board support code for the Intel IQ80321 platform.
6 *
7 * Author: Rory Bolt <rorybolt@pacbell.net>
8 * Copyright (C) 2002 Rory Bolt
9 * Copyright (C) 2004 Intel Corp.
10 */
11
12#include <linux/mm.h>
13#include <linux/init.h>
14#include <linux/kernel.h>
15#include <linux/pci.h>
16#include <linux/string.h>
17#include <linux/serial_core.h>
18#include <linux/serial_8250.h>
19#include <linux/mtd/physmap.h>
20#include <linux/platform_device.h>
21#include <linux/io.h>
22#include <linux/gpio/machine.h>
23#include <asm/irq.h>
24#include <asm/mach/arch.h>
25#include <asm/mach/map.h>
26#include <asm/mach/pci.h>
27#include <asm/mach/time.h>
28#include <asm/mach-types.h>
29#include <asm/page.h>
30
31#include "hardware.h"
32#include "irqs.h"
33#include "gpio-iop32x.h"
34
35/*
36 * IQ80321 timer tick configuration.
37 */
38static void __init iq80321_timer_init(void)
39{
40	/* 33.333 MHz crystal.  */
41	iop_init_time(200000000);
42}
43
44
45/*
46 * IQ80321 I/O.
47 */
48static struct map_desc iq80321_io_desc[] __initdata = {
49 	{	/* on-board devices */
50		.virtual	= IQ80321_UART,
51		.pfn		= __phys_to_pfn(IQ80321_UART),
52		.length		= 0x00100000,
53		.type		= MT_DEVICE,
54	},
55};
56
57void __init iq80321_map_io(void)
58{
59	iop3xx_map_io();
60	iotable_init(iq80321_io_desc, ARRAY_SIZE(iq80321_io_desc));
61}
62
63
64/*
65 * IQ80321 PCI.
66 */
67static int __init
68iq80321_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
69{
70	int irq;
71
72	if ((slot == 2 || slot == 6) && pin == 1) {
73		/* PCI-X Slot INTA */
74		irq = IRQ_IOP32X_XINT2;
75	} else if ((slot == 2 || slot == 6) && pin == 2) {
76		/* PCI-X Slot INTA */
77		irq = IRQ_IOP32X_XINT3;
78	} else if ((slot == 2 || slot == 6) && pin == 3) {
79		/* PCI-X Slot INTA */
80		irq = IRQ_IOP32X_XINT0;
81	} else if ((slot == 2 || slot == 6) && pin == 4) {
82		/* PCI-X Slot INTA */
83		irq = IRQ_IOP32X_XINT1;
84	} else if (slot == 4 || slot == 8) {
85		/* Gig-E */
86		irq = IRQ_IOP32X_XINT0;
87	} else {
88		printk(KERN_ERR "iq80321_pci_map_irq() called for unknown "
89			"device PCI:%d:%d:%d\n", dev->bus->number,
90			PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
91		irq = -1;
92	}
93
94	return irq;
95}
96
97static struct hw_pci iq80321_pci __initdata = {
98	.nr_controllers = 1,
99	.ops		= &iop3xx_ops,
100	.setup		= iop3xx_pci_setup,
101	.preinit	= iop3xx_pci_preinit_cond,
102	.map_irq	= iq80321_pci_map_irq,
103};
104
105static int __init iq80321_pci_init(void)
106{
107	if ((iop3xx_get_init_atu() == IOP3XX_INIT_ATU_ENABLE) &&
108		machine_is_iq80321())
109		pci_common_init(&iq80321_pci);
110
111	return 0;
112}
113
114subsys_initcall(iq80321_pci_init);
115
116
117/*
118 * IQ80321 machine initialisation.
119 */
120static struct physmap_flash_data iq80321_flash_data = {
121	.width		= 1,
122};
123
124static struct resource iq80321_flash_resource = {
125	.start		= 0xf0000000,
126	.end		= 0xf07fffff,
127	.flags		= IORESOURCE_MEM,
128};
129
130static struct platform_device iq80321_flash_device = {
131	.name		= "physmap-flash",
132	.id		= 0,
133	.dev		= {
134		.platform_data	= &iq80321_flash_data,
135	},
136	.num_resources	= 1,
137	.resource	= &iq80321_flash_resource,
138};
139
140static struct plat_serial8250_port iq80321_serial_port[] = {
141	{
142		.mapbase	= IQ80321_UART,
143		.membase	= (char *)IQ80321_UART,
144		.irq		= IRQ_IOP32X_XINT1,
145		.flags		= UPF_SKIP_TEST,
146		.iotype		= UPIO_MEM,
147		.regshift	= 0,
148		.uartclk	= 1843200,
149	},
150	{ },
151};
152
153static struct resource iq80321_uart_resource = {
154	.start		= IQ80321_UART,
155	.end		= IQ80321_UART + 7,
156	.flags		= IORESOURCE_MEM,
157};
158
159static struct platform_device iq80321_serial_device = {
160	.name		= "serial8250",
161	.id		= PLAT8250_DEV_PLATFORM,
162	.dev		= {
163		.platform_data		= iq80321_serial_port,
164	},
165	.num_resources	= 1,
166	.resource	= &iq80321_uart_resource,
167};
168
169static void __init iq80321_init_machine(void)
170{
171	register_iop32x_gpio();
172	gpiod_add_lookup_table(&iop3xx_i2c0_gpio_lookup);
173	gpiod_add_lookup_table(&iop3xx_i2c1_gpio_lookup);
174	platform_device_register(&iop3xx_i2c0_device);
175	platform_device_register(&iop3xx_i2c1_device);
176	platform_device_register(&iq80321_flash_device);
177	platform_device_register(&iq80321_serial_device);
178	platform_device_register(&iop3xx_dma_0_channel);
179	platform_device_register(&iop3xx_dma_1_channel);
180	platform_device_register(&iop3xx_aau_channel);
181}
182
183MACHINE_START(IQ80321, "Intel IQ80321")
184	/* Maintainer: Intel Corp. */
185	.atag_offset	= 0x100,
186	.map_io		= iq80321_map_io,
187	.init_irq	= iop32x_init_irq,
188	.init_time	= iq80321_timer_init,
189	.init_machine	= iq80321_init_machine,
190	.restart	= iop3xx_restart,
191MACHINE_END
192