1 | // SPDX-License-Identifier: GPL-2.0 |
2 | /* |
3 | * June 2006 Steve Glendinning <steve.glendinning@shawell.net> |
4 | * |
5 | * Polaris-specific resource declaration |
6 | * |
7 | */ |
8 | |
9 | #include <linux/init.h> |
10 | #include <linux/interrupt.h> |
11 | #include <linux/irq.h> |
12 | #include <linux/platform_device.h> |
13 | #include <linux/regulator/fixed.h> |
14 | #include <linux/regulator/machine.h> |
15 | #include <linux/smsc911x.h> |
16 | #include <linux/io.h> |
17 | #include <asm/irq.h> |
18 | #include <asm/machvec.h> |
19 | #include <asm/heartbeat.h> |
20 | #include <cpu/gpio.h> |
21 | #include <mach-se/mach/se.h> |
22 | |
23 | #define BCR2 (0xFFFFFF62) |
24 | #define WCR2 (0xFFFFFF66) |
25 | #define AREA5_WAIT_CTRL (0x1C00) |
26 | #define WAIT_STATES_10 (0x7) |
27 | |
28 | /* Dummy supplies, where voltage doesn't matter */ |
29 | static struct regulator_consumer_supply dummy_supplies[] = { |
30 | REGULATOR_SUPPLY("vddvario" , "smsc911x.0" ), |
31 | REGULATOR_SUPPLY("vdd33a" , "smsc911x.0" ), |
32 | }; |
33 | |
34 | static struct resource smsc911x_resources[] = { |
35 | [0] = { |
36 | .name = "smsc911x-memory" , |
37 | .start = PA_EXT5, |
38 | .end = PA_EXT5 + 0x1fff, |
39 | .flags = IORESOURCE_MEM, |
40 | }, |
41 | [1] = { |
42 | .name = "smsc911x-irq" , |
43 | .start = IRQ0_IRQ, |
44 | .end = IRQ0_IRQ, |
45 | .flags = IORESOURCE_IRQ, |
46 | }, |
47 | }; |
48 | |
49 | static struct smsc911x_platform_config smsc911x_config = { |
50 | .irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_LOW, |
51 | .irq_type = SMSC911X_IRQ_TYPE_OPEN_DRAIN, |
52 | .flags = SMSC911X_USE_32BIT, |
53 | .phy_interface = PHY_INTERFACE_MODE_MII, |
54 | }; |
55 | |
56 | static struct platform_device smsc911x_device = { |
57 | .name = "smsc911x" , |
58 | .id = 0, |
59 | .num_resources = ARRAY_SIZE(smsc911x_resources), |
60 | .resource = smsc911x_resources, |
61 | .dev = { |
62 | .platform_data = &smsc911x_config, |
63 | }, |
64 | }; |
65 | |
66 | static unsigned char heartbeat_bit_pos[] = { 0, 1, 2, 3 }; |
67 | |
68 | static struct heartbeat_data heartbeat_data = { |
69 | .bit_pos = heartbeat_bit_pos, |
70 | .nr_bits = ARRAY_SIZE(heartbeat_bit_pos), |
71 | }; |
72 | |
73 | static struct resource heartbeat_resource = { |
74 | .start = PORT_PCDR, |
75 | .end = PORT_PCDR, |
76 | .flags = IORESOURCE_MEM | IORESOURCE_MEM_8BIT, |
77 | }; |
78 | |
79 | static struct platform_device heartbeat_device = { |
80 | .name = "heartbeat" , |
81 | .id = -1, |
82 | .dev = { |
83 | .platform_data = &heartbeat_data, |
84 | }, |
85 | .num_resources = 1, |
86 | .resource = &heartbeat_resource, |
87 | }; |
88 | |
89 | static struct platform_device *polaris_devices[] __initdata = { |
90 | &smsc911x_device, |
91 | &heartbeat_device, |
92 | }; |
93 | |
94 | static int __init polaris_initialise(void) |
95 | { |
96 | u16 wcr, bcr_mask; |
97 | |
98 | printk(KERN_INFO "Configuring Polaris external bus\n" ); |
99 | |
100 | regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies)); |
101 | |
102 | /* Configure area 5 with 2 wait states */ |
103 | wcr = __raw_readw(WCR2); |
104 | wcr &= (~AREA5_WAIT_CTRL); |
105 | wcr |= (WAIT_STATES_10 << 10); |
106 | __raw_writew(val: wcr, WCR2); |
107 | |
108 | /* Configure area 5 for 32-bit access */ |
109 | bcr_mask = __raw_readw(BCR2); |
110 | bcr_mask |= 1 << 10; |
111 | __raw_writew(val: bcr_mask, BCR2); |
112 | |
113 | return platform_add_devices(polaris_devices, |
114 | ARRAY_SIZE(polaris_devices)); |
115 | } |
116 | arch_initcall(polaris_initialise); |
117 | |
118 | static struct ipr_data ipr_irq_table[] = { |
119 | /* External IRQs */ |
120 | { IRQ0_IRQ, 0, 0, 1, }, /* IRQ0 */ |
121 | { IRQ1_IRQ, 0, 4, 1, }, /* IRQ1 */ |
122 | }; |
123 | |
124 | static unsigned long ipr_offsets[] = { |
125 | INTC_IPRC |
126 | }; |
127 | |
128 | static struct ipr_desc ipr_irq_desc = { |
129 | .ipr_offsets = ipr_offsets, |
130 | .nr_offsets = ARRAY_SIZE(ipr_offsets), |
131 | |
132 | .ipr_data = ipr_irq_table, |
133 | .nr_irqs = ARRAY_SIZE(ipr_irq_table), |
134 | .chip = { |
135 | .name = "sh7709-ext" , |
136 | }, |
137 | }; |
138 | |
139 | static void __init init_polaris_irq(void) |
140 | { |
141 | /* Disable all interrupts */ |
142 | __raw_writew(val: 0, addr: BCR_ILCRA); |
143 | __raw_writew(val: 0, addr: BCR_ILCRB); |
144 | __raw_writew(val: 0, addr: BCR_ILCRC); |
145 | __raw_writew(val: 0, addr: BCR_ILCRD); |
146 | __raw_writew(val: 0, addr: BCR_ILCRE); |
147 | __raw_writew(val: 0, addr: BCR_ILCRF); |
148 | __raw_writew(val: 0, addr: BCR_ILCRG); |
149 | |
150 | register_ipr_controller(&ipr_irq_desc); |
151 | } |
152 | |
153 | static struct sh_machine_vector mv_polaris __initmv = { |
154 | .mv_name = "Polaris" , |
155 | .mv_init_irq = init_polaris_irq, |
156 | }; |
157 | |