CoCalc -- board-polaris.c

GitHub Repository: awilliam/linux-vfio
Path: blob/master/arch/sh/boards/board-polaris.c
¹⁰⁸¹⁷ views
1
/*
2
 * June 2006 [email protected]
3
 *
4
 * Polaris-specific resource declaration
5
 *
6
 */
7

8
#include <linux/init.h>
9
#include <linux/interrupt.h>
10
#include <linux/irq.h>
11
#include <linux/platform_device.h>
12
#include <linux/smsc911x.h>
13
#include <linux/io.h>
14
#include <asm/irq.h>
15
#include <asm/machvec.h>
16
#include <asm/heartbeat.h>
17
#include <cpu/gpio.h>
18
#include <mach-se/mach/se.h>
19

20
#define BCR2		(0xFFFFFF62)
21
#define WCR2		(0xFFFFFF66)
22
#define AREA5_WAIT_CTRL	(0x1C00)
23
#define WAIT_STATES_10	(0x7)
24

25
static struct resource smsc911x_resources[] = {
26
	[0] = {
27
		.name		= "smsc911x-memory",
28
		.start		= PA_EXT5,
29
		.end		= PA_EXT5 + 0x1fff,
30
		.flags		= IORESOURCE_MEM,
31
	},
32
	[1] = {
33
		.name		= "smsc911x-irq",
34
		.start		= IRQ0_IRQ,
35
		.end		= IRQ0_IRQ,
36
		.flags		= IORESOURCE_IRQ,
37
	},
38
};
39

40
static struct smsc911x_platform_config smsc911x_config = {
41
	.irq_polarity	= SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
42
	.irq_type	= SMSC911X_IRQ_TYPE_OPEN_DRAIN,
43
	.flags		= SMSC911X_USE_32BIT,
44
	.phy_interface	= PHY_INTERFACE_MODE_MII,
45
};
46

47
static struct platform_device smsc911x_device = {
48
	.name		= "smsc911x",
49
	.id		= 0,
50
	.num_resources	= ARRAY_SIZE(smsc911x_resources),
51
	.resource	= smsc911x_resources,
52
	.dev = {
53
		.platform_data = &smsc911x_config,
54
	},
55
};
56

57
static unsigned char heartbeat_bit_pos[] = { 0, 1, 2, 3 };
58

59
static struct heartbeat_data heartbeat_data = {
60
	.bit_pos	= heartbeat_bit_pos,
61
	.nr_bits	= ARRAY_SIZE(heartbeat_bit_pos),
62
};
63

64
static struct resource heartbeat_resource = {
65
	.start	= PORT_PCDR,
66
	.end	= PORT_PCDR,
67
	.flags	= IORESOURCE_MEM | IORESOURCE_MEM_8BIT,
68
};
69

70
static struct platform_device heartbeat_device = {
71
	.name		= "heartbeat",
72
	.id		= -1,
73
	.dev	= {
74
		.platform_data	= &heartbeat_data,
75
	},
76
	.num_resources	= 1,
77
	.resource	= &heartbeat_resource,
78
};
79

80
static struct platform_device *polaris_devices[] __initdata = {
81
	&smsc911x_device,
82
	&heartbeat_device,
83
};
84

85
static int __init polaris_initialise(void)
86
{
87
	u16 wcr, bcr_mask;
88

89
	printk(KERN_INFO "Configuring Polaris external bus\n");
90

91
	/* Configure area 5 with 2 wait states */
92
	wcr = __raw_readw(WCR2);
93
	wcr &= (~AREA5_WAIT_CTRL);
94
	wcr |= (WAIT_STATES_10 << 10);
95
	__raw_writew(wcr, WCR2);
96

97
	/* Configure area 5 for 32-bit access */
98
	bcr_mask = __raw_readw(BCR2);
99
	bcr_mask |= 1 << 10;
100
	__raw_writew(bcr_mask, BCR2);
101

102
	return platform_add_devices(polaris_devices,
103
				    ARRAY_SIZE(polaris_devices));
104
}
105
arch_initcall(polaris_initialise);
106

107
static struct ipr_data ipr_irq_table[] = {
108
	/* External IRQs */
109
	{ IRQ0_IRQ, 0,  0,  1, },	/* IRQ0 */
110
	{ IRQ1_IRQ, 0,  4,  1, },	/* IRQ1 */
111
};
112

113
static unsigned long ipr_offsets[] = {
114
	INTC_IPRC
115
};
116

117
static struct ipr_desc ipr_irq_desc = {
118
	.ipr_offsets	= ipr_offsets,
119
	.nr_offsets	= ARRAY_SIZE(ipr_offsets),
120

121
	.ipr_data	= ipr_irq_table,
122
	.nr_irqs	= ARRAY_SIZE(ipr_irq_table),
123
	.chip = {
124
		.name	= "sh7709-ext",
125
	},
126
};
127

128
static void __init init_polaris_irq(void)
129
{
130
	/* Disable all interrupts */
131
	__raw_writew(0, BCR_ILCRA);
132
	__raw_writew(0, BCR_ILCRB);
133
	__raw_writew(0, BCR_ILCRC);
134
	__raw_writew(0, BCR_ILCRD);
135
	__raw_writew(0, BCR_ILCRE);
136
	__raw_writew(0, BCR_ILCRF);
137
	__raw_writew(0, BCR_ILCRG);
138

139
	register_ipr_controller(&ipr_irq_desc);
140
}
141

142
static struct sh_machine_vector mv_polaris __initmv = {
143
	.mv_name		= "Polaris",
144
	.mv_nr_irqs		= 61,
145
	.mv_init_irq		= init_polaris_irq,
146
};
147

148
Product

Resources

Company
