1/*
2 * June 2006 Steve Glendinning <steve.glendinning@shawell.net>
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/regulator/fixed.h>
13#include <linux/regulator/machine.h>
14#include <linux/smsc911x.h>
15#include <linux/io.h>
16#include <asm/irq.h>
17#include <asm/machvec.h>
18#include <asm/heartbeat.h>
19#include <cpu/gpio.h>
20#include <mach-se/mach/se.h>
21
22#define BCR2		(0xFFFFFF62)
23#define WCR2		(0xFFFFFF66)
24#define AREA5_WAIT_CTRL	(0x1C00)
25#define WAIT_STATES_10	(0x7)
26
27/* Dummy supplies, where voltage doesn't matter */
28static struct regulator_consumer_supply dummy_supplies[] = {
29	REGULATOR_SUPPLY("vddvario", "smsc911x.0"),
30	REGULATOR_SUPPLY("vdd33a", "smsc911x.0"),
31};
32
33static struct resource smsc911x_resources[] = {
34	[0] = {
35		.name		= "smsc911x-memory",
36		.start		= PA_EXT5,
37		.end		= PA_EXT5 + 0x1fff,
38		.flags		= IORESOURCE_MEM,
39	},
40	[1] = {
41		.name		= "smsc911x-irq",
42		.start		= IRQ0_IRQ,
43		.end		= IRQ0_IRQ,
44		.flags		= IORESOURCE_IRQ,
45	},
46};
47
48static struct smsc911x_platform_config smsc911x_config = {
49	.irq_polarity	= SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
50	.irq_type	= SMSC911X_IRQ_TYPE_OPEN_DRAIN,
51	.flags		= SMSC911X_USE_32BIT,
52	.phy_interface	= PHY_INTERFACE_MODE_MII,
53};
54
55static struct platform_device smsc911x_device = {
56	.name		= "smsc911x",
57	.id		= 0,
58	.num_resources	= ARRAY_SIZE(smsc911x_resources),
59	.resource	= smsc911x_resources,
60	.dev = {
61		.platform_data = &smsc911x_config,
62	},
63};
64
65static unsigned char heartbeat_bit_pos[] = { 0, 1, 2, 3 };
66
67static struct heartbeat_data heartbeat_data = {
68	.bit_pos	= heartbeat_bit_pos,
69	.nr_bits	= ARRAY_SIZE(heartbeat_bit_pos),
70};
71
72static struct resource heartbeat_resource = {
73	.start	= PORT_PCDR,
74	.end	= PORT_PCDR,
75	.flags	= IORESOURCE_MEM | IORESOURCE_MEM_8BIT,
76};
77
78static struct platform_device heartbeat_device = {
79	.name		= "heartbeat",
80	.id		= -1,
81	.dev	= {
82		.platform_data	= &heartbeat_data,
83	},
84	.num_resources	= 1,
85	.resource	= &heartbeat_resource,
86};
87
88static struct platform_device *polaris_devices[] __initdata = {
89	&smsc911x_device,
90	&heartbeat_device,
91};
92
93static int __init polaris_initialise(void)
94{
95	u16 wcr, bcr_mask;
96
97	printk(KERN_INFO "Configuring Polaris external bus\n");
98
99	regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
100
101	/* Configure area 5 with 2 wait states */
102	wcr = __raw_readw(WCR2);
103	wcr &= (~AREA5_WAIT_CTRL);
104	wcr |= (WAIT_STATES_10 << 10);
105	__raw_writew(wcr, WCR2);
106
107	/* Configure area 5 for 32-bit access */
108	bcr_mask = __raw_readw(BCR2);
109	bcr_mask |= 1 << 10;
110	__raw_writew(bcr_mask, BCR2);
111
112	return platform_add_devices(polaris_devices,
113				    ARRAY_SIZE(polaris_devices));
114}
115arch_initcall(polaris_initialise);
116
117static struct ipr_data ipr_irq_table[] = {
118	/* External IRQs */
119	{ IRQ0_IRQ, 0,  0,  1, },	/* IRQ0 */
120	{ IRQ1_IRQ, 0,  4,  1, },	/* IRQ1 */
121};
122
123static unsigned long ipr_offsets[] = {
124	INTC_IPRC
125};
126
127static struct ipr_desc ipr_irq_desc = {
128	.ipr_offsets	= ipr_offsets,
129	.nr_offsets	= ARRAY_SIZE(ipr_offsets),
130
131	.ipr_data	= ipr_irq_table,
132	.nr_irqs	= ARRAY_SIZE(ipr_irq_table),
133	.chip = {
134		.name	= "sh7709-ext",
135	},
136};
137
138static void __init init_polaris_irq(void)
139{
140	/* Disable all interrupts */
141	__raw_writew(0, BCR_ILCRA);
142	__raw_writew(0, BCR_ILCRB);
143	__raw_writew(0, BCR_ILCRC);
144	__raw_writew(0, BCR_ILCRD);
145	__raw_writew(0, BCR_ILCRE);
146	__raw_writew(0, BCR_ILCRF);
147	__raw_writew(0, BCR_ILCRG);
148
149	register_ipr_controller(&ipr_irq_desc);
150}
151
152static struct sh_machine_vector mv_polaris __initmv = {
153	.mv_name		= "Polaris",
154	.mv_init_irq		= init_polaris_irq,
155};
156