1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 *  linux/arch/arm/mach-pxa/mp900.c
4 *
5 *  Support for the NEC MobilePro900/C platform
6 *
7 *  Based on mach-pxa/gumstix.c
8 *
9 *  2007, 2008 Kristoffer Ericson <kristoffer.ericson@gmail.com>
10 *  2007, 2008 Michael Petchkovsky <mkpetch@internode.on.net>
11 */
12
13#include <linux/init.h>
14#include <linux/device.h>
15#include <linux/platform_device.h>
16#include <linux/types.h>
17#include <linux/usb/isp116x.h>
18
19#include <asm/mach-types.h>
20#include <asm/mach/arch.h>
21
22#include "pxa25x.h"
23#include "generic.h"
24
25static void isp116x_pfm_delay(struct device *dev, int delay)
26{
27
28	/* 400MHz PXA2 = 2.5ns / instruction */
29
30	int cyc = delay / 10;
31
32	/* 4 Instructions = 4 x 2.5ns = 10ns */
33	__asm__ volatile ("0:\n"
34		"subs %0, %1, #1\n"
35		"bge 0b\n"
36		:"=r" (cyc)
37		:"0"(cyc)
38	);
39}
40
41static struct isp116x_platform_data isp116x_pfm_data = {
42	.remote_wakeup_enable = 1,
43	.delay = isp116x_pfm_delay,
44};
45
46static struct resource isp116x_pfm_resources[] = {
47	[0] =	{
48		.start	= 0x0d000000,
49		.end	= 0x0d000000 + 1,
50		.flags	= IORESOURCE_MEM,
51		},
52	[1] =	{
53		.start  = 0x0d000000 + 4,
54		.end	= 0x0d000000 + 5,
55		.flags  = IORESOURCE_MEM,
56		},
57	[2] =	{
58		.start	= 61,
59		.end	= 61,
60		.flags	= IORESOURCE_IRQ,
61		},
62};
63
64static struct platform_device mp900c_dummy_device = {
65	.name		= "mp900c_dummy",
66	.id		= -1,
67};
68
69static struct platform_device mp900c_usb = {
70	.name		= "isp116x-hcd",
71	.num_resources	= ARRAY_SIZE(isp116x_pfm_resources),
72	.resource	= isp116x_pfm_resources,
73	.dev.platform_data = &isp116x_pfm_data,
74};
75
76static struct platform_device *devices[] __initdata = {
77	&mp900c_dummy_device,
78	&mp900c_usb,
79};
80
81static void __init mp900c_init(void)
82{
83	printk(KERN_INFO "MobilePro 900/C machine init\n");
84	pxa_set_ffuart_info(NULL);
85	pxa_set_btuart_info(NULL);
86	pxa_set_stuart_info(NULL);
87	platform_add_devices(devices, ARRAY_SIZE(devices));
88}
89
90/* Maintainer - Michael Petchkovsky <mkpetch@internode.on.net> */
91MACHINE_START(NEC_MP900, "MobilePro900/C")
92	.atag_offset	= 0x220100,
93	.init_time	= pxa_timer_init,
94	.map_io		= pxa25x_map_io,
95	.nr_irqs	= PXA_NR_IRQS,
96	.init_irq	= pxa25x_init_irq,
97	.handle_irq	= pxa25x_handle_irq,
98	.init_machine	= mp900c_init,
99	.restart	= pxa_restart,
100MACHINE_END
101
102