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 */
28 static struct regulator_consumer_supply dummy_supplies[] = {
29 REGULATOR_SUPPLY("vddvario", "smsc911x.0"),
30 REGULATOR_SUPPLY("vdd33a", "smsc911x.0"),
31 };
32
33 static 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
48 static 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
55 static 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
65 static unsigned char heartbeat_bit_pos[] = { 0, 1, 2, 3 };
66
67 static struct heartbeat_data heartbeat_data = {
68 .bit_pos = heartbeat_bit_pos,
69 .nr_bits = ARRAY_SIZE(heartbeat_bit_pos),
70 };
71
72 static struct resource heartbeat_resource = {
73 .start = PORT_PCDR,
74 .end = PORT_PCDR,
75 .flags = IORESOURCE_MEM | IORESOURCE_MEM_8BIT,
76 };
77
78 static 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
88 static struct platform_device *polaris_devices[] __initdata = {
89 &smsc911x_device,
90 &heartbeat_device,
91 };
92
polaris_initialise(void)93 static 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 }
115 arch_initcall(polaris_initialise);
116
117 static 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
123 static unsigned long ipr_offsets[] = {
124 INTC_IPRC
125 };
126
127 static 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
init_polaris_irq(void)138 static 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
152 static struct sh_machine_vector mv_polaris __initmv = {
153 .mv_name = "Polaris",
154 .mv_init_irq = init_polaris_irq,
155 };
156