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
isp116x_pfm_delay(struct device * dev,int delay)25 static 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
41 static struct isp116x_platform_data isp116x_pfm_data = {
42 .remote_wakeup_enable = 1,
43 .delay = isp116x_pfm_delay,
44 };
45
46 static 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
64 static struct platform_device mp900c_dummy_device = {
65 .name = "mp900c_dummy",
66 .id = -1,
67 };
68
69 static 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
76 static struct platform_device *devices[] __initdata = {
77 &mp900c_dummy_device,
78 &mp900c_usb,
79 };
80
mp900c_init(void)81 static 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> */
91 MACHINE_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,
100 MACHINE_END
101
102