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,