2 * arch/arm/mach-ks8695/board-acs5k.c
4 * Brivo Systems LLC, ACS-5000 Master Board
6 * Copyright 2008 Simtec Electronics
7 * Daniel Silverstone <dsilvers@simtec.co.uk>
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.
13 #include <linux/gpio.h>
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>
20 #include <linux/i2c.h>
21 #include <linux/i2c-algo-bit.h>
22 #include <linux/i2c-gpio.h>
23 #include <linux/i2c/pca953x.h>
25 #include <linux/mtd/mtd.h>
26 #include <linux/mtd/map.h>
27 #include <linux/mtd/physmap.h>
28 #include <linux/mtd/partitions.h>
30 #include <asm/mach-types.h>
32 #include <asm/mach/arch.h>
33 #include <asm/mach/map.h>
34 #include <asm/mach/irq.h>
36 #include <mach/devices.h>
40 static struct i2c_gpio_platform_data acs5k_i2c_device_platdata
= {
46 static struct platform_device acs5k_i2c_device
= {
52 .platform_data
= &acs5k_i2c_device_platdata
,
56 static int acs5k_pca9555_setup(struct i2c_client
*client
,
57 unsigned gpio_base
, unsigned ngpio
,
60 static int acs5k_gpio_value
[] = {
61 -1, -1, -1, -1, -1, -1, -1, 0, 1, 1, -1, 0, 1, 0, -1, -1
65 for (n
= 0; n
< ARRAY_SIZE(acs5k_gpio_value
); ++n
) {
66 gpio_request(gpio_base
+ n
, "ACS-5000 GPIO Expander");
67 if (acs5k_gpio_value
[n
] < 0)
68 gpio_direction_input(gpio_base
+ n
);
70 gpio_direction_output(gpio_base
+ n
,
72 gpio_export(gpio_base
+ n
, 0); /* Export, direction locked down */
78 static struct pca953x_platform_data acs5k_i2c_pca9555_platdata
= {
79 .gpio_base
= 16, /* Start directly after the CPU's GPIO */
80 .invert
= 0, /* Do not invert */
81 .setup
= acs5k_pca9555_setup
,
84 static struct i2c_board_info acs5k_i2c_devs
[] __initdata
= {
86 I2C_BOARD_INFO("pcf8563", 0x51),
89 I2C_BOARD_INFO("pca9555", 0x20),
90 .platform_data
= &acs5k_i2c_pca9555_platdata
,
94 static void __devinit
acs5k_i2c_init(void)
96 /* The gpio interface */
97 platform_device_register(&acs5k_i2c_device
);
99 i2c_register_board_info(0, acs5k_i2c_devs
,
100 ARRAY_SIZE(acs5k_i2c_devs
));
103 static struct mtd_partition acs5k_nor_partitions
[] = {
105 .name
= "Boot Agent and config",
108 .mask_flags
= MTD_WRITEABLE
,
118 .offset
= SZ_256K
+ SZ_1M
,
122 .size
= SZ_4M
+ SZ_2M
,
123 .offset
= SZ_256K
+ SZ_1M
+ SZ_2M
,
127 .size
= SZ_16M
+ SZ_4M
+ SZ_2M
+ SZ_512K
, /* 22.5 MB */
128 .offset
= SZ_256K
+ SZ_8M
+ SZ_1M
,
132 static struct physmap_flash_data acs5k_nor_pdata
= {
134 .nr_parts
= ARRAY_SIZE(acs5k_nor_partitions
),
135 .parts
= acs5k_nor_partitions
,
138 static struct resource acs5k_nor_resource
[] = {
140 .start
= SZ_32M
, /* We expect the bootloader to map
143 .end
= SZ_32M
+ SZ_16M
- 1,
144 .flags
= IORESOURCE_MEM
,
147 .start
= SZ_32M
+ SZ_16M
,
148 .end
= SZ_32M
+ SZ_32M
- SZ_256K
- 1,
149 .flags
= IORESOURCE_MEM
,
153 static struct platform_device acs5k_device_nor
= {
154 .name
= "physmap-flash",
156 .num_resources
= ARRAY_SIZE(acs5k_nor_resource
),
157 .resource
= acs5k_nor_resource
,
159 .platform_data
= &acs5k_nor_pdata
,
163 static void __init
acs5k_register_nor(void)
167 if (acs5k_nor_partitions
[0].mask_flags
== 0)
168 printk(KERN_WARNING
"Warning: Unprotecting bootloader and configuration partition\n");
170 ret
= platform_device_register(&acs5k_device_nor
);
172 printk(KERN_ERR
"failed to register physmap-flash device\n");
175 static int __init
acs5k_protection_setup(char *s
)
177 /* We can't allocate anything here but we should be able
178 * to trivially parse s and decide if we can protect the
179 * bootloader partition or not
181 if (strcmp(s
, "no") == 0)
182 acs5k_nor_partitions
[0].mask_flags
= 0;
187 __setup("protect_bootloader=", acs5k_protection_setup
);
189 static void __init
acs5k_init_gpio(void)
193 ks8695_register_gpios();
194 for (i
= 0; i
< 4; ++i
)
195 gpio_request(i
, "ACS5K IRQ");
196 gpio_request(7, "ACS5K KS_FRDY");
197 for (i
= 8; i
< 16; ++i
)
198 gpio_request(i
, "ACS5K Unused");
200 gpio_request(3, "ACS5K CAN Control");
201 gpio_request(6, "ACS5K Heartbeat");
202 gpio_direction_output(3, 1); /* Default CAN_RESET high */
203 gpio_direction_output(6, 0); /* Default KS8695_ACTIVE low */
204 gpio_export(3, 0); /* export CAN_RESET as output only */
205 gpio_export(6, 0); /* export KS8695_ACTIVE as output only */
208 static void __init
acs5k_init(void)
213 ks8695_add_device_lan(); /* eth0 = LAN */
214 ks8695_add_device_wan(); /* ethX = WAN */
217 acs5k_register_nor();
223 MACHINE_START(ACS5K
, "Brivo Systems LLC ACS-5000 Master board")
224 /* Maintainer: Simtec Electronics. */
225 .boot_params
= KS8695_SDRAM_PA
+ 0x100,
226 .map_io
= ks8695_map_io
,
227 .init_irq
= ks8695_init_irq
,
228 .init_machine
= acs5k_init
,
229 .timer
= &ks8695_timer
,