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28ad94ec AR |
1 | /* |
2 | * Copyright STMicroelectronics, 2007. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, write to the Free Software | |
16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
17 | */ | |
18 | ||
19 | #include <linux/types.h> | |
20 | #include <linux/init.h> | |
21 | #include <linux/device.h> | |
2ec1d359 | 22 | #include <linux/amba/bus.h> |
3e3c62ca | 23 | #include <linux/platform_device.h> |
28ad94ec | 24 | |
0f332861 | 25 | #include <plat/gpio-nomadik.h> |
28ad94ec AR |
26 | #include <mach/hardware.h> |
27 | #include <mach/irqs.h> | |
28 | #include <asm/mach/map.h> | |
29 | #include <asm/hardware/vic.h> | |
30 | ||
0b260fd4 AR |
31 | #include <asm/cacheflush.h> |
32 | #include <asm/hardware/cache-l2x0.h> | |
33 | ||
ba327b1e LW |
34 | #include "clock.h" |
35 | ||
3e3c62ca RV |
36 | #define __MEM_4K_RESOURCE(x) \ |
37 | .res = {.start = (x), .end = (x) + SZ_4K - 1, .flags = IORESOURCE_MEM} | |
38 | ||
2ec1d359 | 39 | /* The 8815 has 4 GPIO blocks, let's register them immediately */ |
3e3c62ca RV |
40 | |
41 | #define GPIO_RESOURCE(block) \ | |
42 | { \ | |
43 | .start = NOMADIK_GPIO##block##_BASE, \ | |
44 | .end = NOMADIK_GPIO##block##_BASE + SZ_4K - 1, \ | |
45 | .flags = IORESOURCE_MEM, \ | |
46 | }, \ | |
47 | { \ | |
48 | .start = IRQ_GPIO##block, \ | |
49 | .end = IRQ_GPIO##block, \ | |
50 | .flags = IORESOURCE_IRQ, \ | |
51 | } | |
52 | ||
53 | #define GPIO_DEVICE(block) \ | |
54 | { \ | |
55 | .name = "gpio", \ | |
56 | .id = block, \ | |
57 | .num_resources = 2, \ | |
58 | .resource = &cpu8815_gpio_resources[block * 2], \ | |
59 | .dev = { \ | |
60 | .platform_data = &cpu8815_gpio[block], \ | |
61 | }, \ | |
62 | } | |
63 | ||
2ec1d359 AR |
64 | static struct nmk_gpio_platform_data cpu8815_gpio[] = { |
65 | { | |
66 | .name = "GPIO-0-31", | |
67 | .first_gpio = 0, | |
68 | .first_irq = NOMADIK_GPIO_TO_IRQ(0), | |
2ec1d359 AR |
69 | }, { |
70 | .name = "GPIO-32-63", | |
71 | .first_gpio = 32, | |
72 | .first_irq = NOMADIK_GPIO_TO_IRQ(32), | |
2ec1d359 AR |
73 | }, { |
74 | .name = "GPIO-64-95", | |
75 | .first_gpio = 64, | |
76 | .first_irq = NOMADIK_GPIO_TO_IRQ(64), | |
2ec1d359 AR |
77 | }, { |
78 | .name = "GPIO-96-127", /* 124..127 not routed to pin */ | |
79 | .first_gpio = 96, | |
80 | .first_irq = NOMADIK_GPIO_TO_IRQ(96), | |
2ec1d359 AR |
81 | } |
82 | }; | |
83 | ||
3e3c62ca RV |
84 | static struct resource cpu8815_gpio_resources[] = { |
85 | GPIO_RESOURCE(0), | |
86 | GPIO_RESOURCE(1), | |
87 | GPIO_RESOURCE(2), | |
88 | GPIO_RESOURCE(3), | |
89 | }; | |
2ec1d359 | 90 | |
3e3c62ca RV |
91 | static struct platform_device cpu8815_platform_gpio[] = { |
92 | GPIO_DEVICE(0), | |
93 | GPIO_DEVICE(1), | |
94 | GPIO_DEVICE(2), | |
95 | GPIO_DEVICE(3), | |
2ec1d359 AR |
96 | }; |
97 | ||
d2392ba0 AR |
98 | static struct amba_device cpu8815_amba_rng = { |
99 | .dev = { | |
100 | .init_name = "rng", | |
101 | }, | |
102 | __MEM_4K_RESOURCE(NOMADIK_RNG_BASE), | |
103 | }; | |
104 | ||
3e3c62ca RV |
105 | static struct platform_device *platform_devs[] __initdata = { |
106 | cpu8815_platform_gpio + 0, | |
107 | cpu8815_platform_gpio + 1, | |
108 | cpu8815_platform_gpio + 2, | |
109 | cpu8815_platform_gpio + 3, | |
110 | }; | |
111 | ||
2ec1d359 | 112 | static struct amba_device *amba_devs[] __initdata = { |
d2392ba0 | 113 | &cpu8815_amba_rng |
2ec1d359 AR |
114 | }; |
115 | ||
116 | static int __init cpu8815_init(void) | |
117 | { | |
118 | int i; | |
119 | ||
3e3c62ca | 120 | platform_add_devices(platform_devs, ARRAY_SIZE(platform_devs)); |
2ec1d359 AR |
121 | for (i = 0; i < ARRAY_SIZE(amba_devs); i++) |
122 | amba_device_register(amba_devs[i], &iomem_resource); | |
123 | return 0; | |
124 | } | |
125 | arch_initcall(cpu8815_init); | |
126 | ||
28ad94ec AR |
127 | /* All SoC devices live in the same area (see hardware.h) */ |
128 | static struct map_desc nomadik_io_desc[] __initdata = { | |
129 | { | |
130 | .virtual = NOMADIK_IO_VIRTUAL, | |
131 | .pfn = __phys_to_pfn(NOMADIK_IO_PHYSICAL), | |
132 | .length = NOMADIK_IO_SIZE, | |
133 | .type = MT_DEVICE, | |
134 | } | |
135 | /* static ram and secured ram may be added later */ | |
136 | }; | |
137 | ||
138 | void __init cpu8815_map_io(void) | |
139 | { | |
140 | iotable_init(nomadik_io_desc, ARRAY_SIZE(nomadik_io_desc)); | |
141 | } | |
142 | ||
143 | void __init cpu8815_init_irq(void) | |
144 | { | |
145 | /* This modified VIC cell has two register blocks, at 0 and 0x20 */ | |
146 | vic_init(io_p2v(NOMADIK_IC_BASE + 0x00), IRQ_VIC_START + 0, ~0, 0); | |
147 | vic_init(io_p2v(NOMADIK_IC_BASE + 0x20), IRQ_VIC_START + 32, ~0, 0); | |
ba327b1e LW |
148 | |
149 | /* | |
150 | * Init clocks here so that they are available for system timer | |
151 | * initialization. | |
152 | */ | |
153 | clk_init(); | |
28ad94ec AR |
154 | } |
155 | ||
156 | /* | |
157 | * This function is called from the board init ("init_machine"). | |
28ad94ec AR |
158 | */ |
159 | void __init cpu8815_platform_init(void) | |
160 | { | |
0b260fd4 AR |
161 | #ifdef CONFIG_CACHE_L2X0 |
162 | /* At full speed latency must be >=2, so 0x249 in low bits */ | |
163 | l2x0_init(io_p2v(NOMADIK_L2CC_BASE), 0x00730249, 0xfe000fff); | |
164 | #endif | |
28ad94ec AR |
165 | return; |
166 | } |