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b74788d8 DS |
1 | /* |
2 | * arch/arm/mach-ks8695/board-acs5k.c | |
3 | * | |
4 | * Brivo Systems LLC, ACS-5000 Master Board | |
5 | * | |
6 | * Copyright 2008 Simtec Electronics | |
7 | * Daniel Silverstone <dsilvers@simtec.co.uk> | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License version 2 as | |
11 | * published by the Free Software Foundation. | |
12 | */ | |
2f8163ba | 13 | #include <linux/gpio.h> |
b74788d8 DS |
14 | #include <linux/kernel.h> |
15 | #include <linux/types.h> | |
16 | #include <linux/interrupt.h> | |
17 | #include <linux/init.h> | |
18 | #include <linux/platform_device.h> | |
19 | ||
20 | #include <linux/i2c.h> | |
21 | #include <linux/i2c-algo-bit.h> | |
22 | #include <linux/i2c-gpio.h> | |
5877457a | 23 | #include <linux/platform_data/pca953x.h> |
b74788d8 DS |
24 | |
25 | #include <linux/mtd/mtd.h> | |
26 | #include <linux/mtd/map.h> | |
27 | #include <linux/mtd/physmap.h> | |
28 | #include <linux/mtd/partitions.h> | |
29 | ||
30 | #include <asm/mach-types.h> | |
31 | ||
32 | #include <asm/mach/arch.h> | |
33 | #include <asm/mach/map.h> | |
34 | #include <asm/mach/irq.h> | |
35 | ||
36 | #include <mach/devices.h> | |
e24e4498 | 37 | #include <mach/gpio-ks8695.h> |
b74788d8 DS |
38 | |
39 | #include "generic.h" | |
40 | ||
41 | static struct i2c_gpio_platform_data acs5k_i2c_device_platdata = { | |
42 | .sda_pin = 4, | |
43 | .scl_pin = 5, | |
44 | .udelay = 10, | |
45 | }; | |
46 | ||
47 | static struct platform_device acs5k_i2c_device = { | |
48 | .name = "i2c-gpio", | |
49 | .id = -1, | |
50 | .num_resources = 0, | |
51 | .resource = NULL, | |
52 | .dev = { | |
53 | .platform_data = &acs5k_i2c_device_platdata, | |
54 | }, | |
55 | }; | |
56 | ||
57 | static int acs5k_pca9555_setup(struct i2c_client *client, | |
58 | unsigned gpio_base, unsigned ngpio, | |
59 | void *context) | |
60 | { | |
61 | static int acs5k_gpio_value[] = { | |
62 | -1, -1, -1, -1, -1, -1, -1, 0, 1, 1, -1, 0, 1, 0, -1, -1 | |
63 | }; | |
64 | int n; | |
65 | ||
66 | for (n = 0; n < ARRAY_SIZE(acs5k_gpio_value); ++n) { | |
67 | gpio_request(gpio_base + n, "ACS-5000 GPIO Expander"); | |
68 | if (acs5k_gpio_value[n] < 0) | |
69 | gpio_direction_input(gpio_base + n); | |
70 | else | |
71 | gpio_direction_output(gpio_base + n, | |
72 | acs5k_gpio_value[n]); | |
73 | gpio_export(gpio_base + n, 0); /* Export, direction locked down */ | |
74 | } | |
75 | ||
76 | return 0; | |
77 | } | |
78 | ||
79 | static struct pca953x_platform_data acs5k_i2c_pca9555_platdata = { | |
80 | .gpio_base = 16, /* Start directly after the CPU's GPIO */ | |
81 | .invert = 0, /* Do not invert */ | |
82 | .setup = acs5k_pca9555_setup, | |
83 | }; | |
84 | ||
85 | static struct i2c_board_info acs5k_i2c_devs[] __initdata = { | |
86 | { | |
87 | I2C_BOARD_INFO("pcf8563", 0x51), | |
88 | }, | |
89 | { | |
90 | I2C_BOARD_INFO("pca9555", 0x20), | |
91 | .platform_data = &acs5k_i2c_pca9555_platdata, | |
92 | }, | |
93 | }; | |
94 | ||
351a102d | 95 | static void acs5k_i2c_init(void) |
b74788d8 DS |
96 | { |
97 | /* The gpio interface */ | |
98 | platform_device_register(&acs5k_i2c_device); | |
99 | /* I2C devices */ | |
100 | i2c_register_board_info(0, acs5k_i2c_devs, | |
101 | ARRAY_SIZE(acs5k_i2c_devs)); | |
102 | } | |
103 | ||
104 | static struct mtd_partition acs5k_nor_partitions[] = { | |
105 | [0] = { | |
106 | .name = "Boot Agent and config", | |
107 | .size = SZ_256K, | |
108 | .offset = 0, | |
109 | .mask_flags = MTD_WRITEABLE, | |
110 | }, | |
111 | [1] = { | |
112 | .name = "Kernel", | |
113 | .size = SZ_1M, | |
114 | .offset = SZ_256K, | |
115 | }, | |
116 | [2] = { | |
117 | .name = "SquashFS1", | |
118 | .size = SZ_2M, | |
119 | .offset = SZ_256K + SZ_1M, | |
120 | }, | |
121 | [3] = { | |
122 | .name = "SquashFS2", | |
123 | .size = SZ_4M + SZ_2M, | |
124 | .offset = SZ_256K + SZ_1M + SZ_2M, | |
125 | }, | |
126 | [4] = { | |
127 | .name = "Data", | |
128 | .size = SZ_16M + SZ_4M + SZ_2M + SZ_512K, /* 22.5 MB */ | |
129 | .offset = SZ_256K + SZ_8M + SZ_1M, | |
130 | } | |
131 | }; | |
132 | ||
133 | static struct physmap_flash_data acs5k_nor_pdata = { | |
134 | .width = 4, | |
135 | .nr_parts = ARRAY_SIZE(acs5k_nor_partitions), | |
136 | .parts = acs5k_nor_partitions, | |
137 | }; | |
138 | ||
139 | static struct resource acs5k_nor_resource[] = { | |
140 | [0] = { | |
141 | .start = SZ_32M, /* We expect the bootloader to map | |
142 | * the flash here. | |
143 | */ | |
144 | .end = SZ_32M + SZ_16M - 1, | |
145 | .flags = IORESOURCE_MEM, | |
146 | }, | |
147 | [1] = { | |
148 | .start = SZ_32M + SZ_16M, | |
149 | .end = SZ_32M + SZ_32M - SZ_256K - 1, | |
150 | .flags = IORESOURCE_MEM, | |
151 | } | |
152 | }; | |
153 | ||
154 | static struct platform_device acs5k_device_nor = { | |
155 | .name = "physmap-flash", | |
156 | .id = -1, | |
157 | .num_resources = ARRAY_SIZE(acs5k_nor_resource), | |
158 | .resource = acs5k_nor_resource, | |
159 | .dev = { | |
160 | .platform_data = &acs5k_nor_pdata, | |
161 | }, | |
162 | }; | |
163 | ||
164 | static void __init acs5k_register_nor(void) | |
165 | { | |
166 | int ret; | |
167 | ||
168 | if (acs5k_nor_partitions[0].mask_flags == 0) | |
169 | printk(KERN_WARNING "Warning: Unprotecting bootloader and configuration partition\n"); | |
170 | ||
171 | ret = platform_device_register(&acs5k_device_nor); | |
172 | if (ret < 0) | |
173 | printk(KERN_ERR "failed to register physmap-flash device\n"); | |
174 | } | |
175 | ||
176 | static int __init acs5k_protection_setup(char *s) | |
177 | { | |
178 | /* We can't allocate anything here but we should be able | |
179 | * to trivially parse s and decide if we can protect the | |
180 | * bootloader partition or not | |
181 | */ | |
182 | if (strcmp(s, "no") == 0) | |
183 | acs5k_nor_partitions[0].mask_flags = 0; | |
184 | ||
185 | return 1; | |
186 | } | |
187 | ||
188 | __setup("protect_bootloader=", acs5k_protection_setup); | |
189 | ||
190 | static void __init acs5k_init_gpio(void) | |
191 | { | |
192 | int i; | |
193 | ||
194 | ks8695_register_gpios(); | |
195 | for (i = 0; i < 4; ++i) | |
196 | gpio_request(i, "ACS5K IRQ"); | |
197 | gpio_request(7, "ACS5K KS_FRDY"); | |
198 | for (i = 8; i < 16; ++i) | |
199 | gpio_request(i, "ACS5K Unused"); | |
200 | ||
201 | gpio_request(3, "ACS5K CAN Control"); | |
202 | gpio_request(6, "ACS5K Heartbeat"); | |
203 | gpio_direction_output(3, 1); /* Default CAN_RESET high */ | |
204 | gpio_direction_output(6, 0); /* Default KS8695_ACTIVE low */ | |
205 | gpio_export(3, 0); /* export CAN_RESET as output only */ | |
206 | gpio_export(6, 0); /* export KS8695_ACTIVE as output only */ | |
207 | } | |
208 | ||
209 | static void __init acs5k_init(void) | |
210 | { | |
211 | acs5k_init_gpio(); | |
212 | ||
213 | /* Network device */ | |
214 | ks8695_add_device_lan(); /* eth0 = LAN */ | |
215 | ks8695_add_device_wan(); /* ethX = WAN */ | |
216 | ||
217 | /* NOR devices */ | |
218 | acs5k_register_nor(); | |
219 | ||
220 | /* I2C bus */ | |
221 | acs5k_i2c_init(); | |
222 | } | |
223 | ||
224 | MACHINE_START(ACS5K, "Brivo Systems LLC ACS-5000 Master board") | |
225 | /* Maintainer: Simtec Electronics. */ | |
0318ce93 | 226 | .atag_offset = 0x100, |
b74788d8 DS |
227 | .map_io = ks8695_map_io, |
228 | .init_irq = ks8695_init_irq, | |
229 | .init_machine = acs5k_init, | |
6bb27d73 | 230 | .init_time = ks8695_timer_init, |
114c19b7 | 231 | .restart = ks8695_restart, |
b74788d8 | 232 | MACHINE_END |