[ARM] 5372/1: ACS5K: Core board support for the ACS-5000

This patch provides the core board support for the Brivo Systems
LLC ACS-5000 master board for automated door/card-reader etc
management.

Signed-off-by: Daniel Silverstone <dsilvers@simtec.co.uk>
Signed-off-by: Vincent Sanders <vince@simtec.co.uk>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

3 files changed, 240 insertions, 0 deletions

diff --git a/arch/arm/mach-ks8695/Kconfig b/arch/arm/mach-ks8695/Kconfig
index 2754daabda55..fe0c82e30b2d 100644
--- a/arch/arm/mach-ks8695/Kconfig
+++ b/arch/arm/mach-ks8695/Kconfig
@@ -14,6 +14,12 @@ config MACH_DSM320
           Say 'Y' here if you want your kernel to run on the D-Link
           DSM-320 Wireless Media Player.
 
+config MACH_ACS5K
+        bool "Brivo Systems LLC, ACS-5000 Master board"
+        help
+          say 'Y' here if you want your kernel to run on the Brivo
+          Systems LLC, ACS-5000 Master board.
+
 endmenu
 
 endif
diff --git a/arch/arm/mach-ks8695/Makefile b/arch/arm/mach-ks8695/Makefile
index f735d2cc0294..7e3e8160ed30 100644
--- a/arch/arm/mach-ks8695/Makefile
+++ b/arch/arm/mach-ks8695/Makefile
@@ -17,3 +17,4 @@ obj-$(CONFIG_LEDS)		+= leds.o
 # Board-specific support
 obj-$(CONFIG_MACH_KS8695)       += board-micrel.o
 obj-$(CONFIG_MACH_DSM320)       += board-dsm320.o
+obj-$(CONFIG_MACH_ACS5K)        += board-acs5k.o
diff --git a/arch/arm/mach-ks8695/board-acs5k.c b/arch/arm/mach-ks8695/board-acs5k.c
new file mode 100644
index 000000000000..9e3e5a640ad2
--- /dev/null
+++ b/arch/arm/mach-ks8695/board-acs5k.c
@@ -0,0 +1,233 @@
+/*
+ * arch/arm/mach-ks8695/board-acs5k.c
+ *
+ * Brivo Systems LLC, ACS-5000 Master Board
+ *
+ * Copyright 2008 Simtec Electronics
+ *                Daniel Silverstone <dsilvers@simtec.co.uk>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+
+#include <linux/i2c.h>
+#include <linux/i2c-algo-bit.h>
+#include <linux/i2c-gpio.h>
+#include <linux/i2c/pca953x.h>
+
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/map.h>
+#include <linux/mtd/physmap.h>
+#include <linux/mtd/partitions.h>
+
+#include <asm/mach-types.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+
+#include <mach/devices.h>
+#include <mach/gpio.h>
+
+#include "generic.h"
+
+static struct i2c_gpio_platform_data acs5k_i2c_device_platdata = {
+        .sda_pin        = 4,
+        .scl_pin        = 5,
+        .udelay         = 10,
+};
+
+static struct platform_device acs5k_i2c_device = {
+        .name           = "i2c-gpio",
+        .id             = -1,
+        .num_resources  = 0,
+        .resource       = NULL,
+        .dev            = {
+                .platform_data  = &acs5k_i2c_device_platdata,
+        },
+};
+
+static int acs5k_pca9555_setup(struct i2c_client *client,
+                               unsigned gpio_base, unsigned ngpio,
+                               void *context)
+{
+        static int acs5k_gpio_value[] = {
+                -1, -1, -1, -1, -1, -1, -1, 0, 1, 1, -1, 0, 1, 0, -1, -1
+        };
+        int n;
+
+        for (n = 0; n < ARRAY_SIZE(acs5k_gpio_value); ++n) {
+                gpio_request(gpio_base + n, "ACS-5000 GPIO Expander");
+                if (acs5k_gpio_value[n] < 0)
+                        gpio_direction_input(gpio_base + n);
+                else
+                        gpio_direction_output(gpio_base + n,
+                                              acs5k_gpio_value[n]);
+                gpio_export(gpio_base + n, 0); /* Export, direction locked down */
+        }
+
+        return 0;
+}
+
+static struct pca953x_platform_data acs5k_i2c_pca9555_platdata = {
+        .gpio_base      = 16, /* Start directly after the CPU's GPIO */
+        .invert         = 0, /* Do not invert */
+        .setup          = acs5k_pca9555_setup,
+};
+
+static struct i2c_board_info acs5k_i2c_devs[] __initdata = {
+        {
+                I2C_BOARD_INFO("pcf8563", 0x51),
+        },
+        {
+                I2C_BOARD_INFO("pca9555", 0x20),
+                .platform_data = &acs5k_i2c_pca9555_platdata,
+        },
+};
+
+static void __devinit acs5k_i2c_init(void)
+{
+        /* The gpio interface */
+        platform_device_register(&acs5k_i2c_device);
+        /* I2C devices */
+        i2c_register_board_info(0, acs5k_i2c_devs,
+                                ARRAY_SIZE(acs5k_i2c_devs));
+}
+
+static struct mtd_partition acs5k_nor_partitions[] = {
+        [0] = {
+                .name   = "Boot Agent and config",
+                .size   = SZ_256K,
+                .offset = 0,
+                .mask_flags = MTD_WRITEABLE,
+        },
+        [1] = {
+                .name   = "Kernel",
+                .size   = SZ_1M,
+                .offset = SZ_256K,
+        },
+        [2] = {
+                .name   = "SquashFS1",
+                .size   = SZ_2M,
+                .offset = SZ_256K + SZ_1M,
+        },
+        [3] = {
+                .name   = "SquashFS2",
+                .size   = SZ_4M + SZ_2M,
+                .offset = SZ_256K + SZ_1M + SZ_2M,
+        },
+        [4] = {
+                .name   = "Data",
+                .size   = SZ_16M + SZ_4M + SZ_2M + SZ_512K, /* 22.5 MB */
+                .offset = SZ_256K + SZ_8M + SZ_1M,
+        }
+};
+
+static struct physmap_flash_data acs5k_nor_pdata = {
+        .width          = 4,
+        .nr_parts       = ARRAY_SIZE(acs5k_nor_partitions),
+        .parts          = acs5k_nor_partitions,
+};
+
+static struct resource acs5k_nor_resource[] = {
+        [0] = {
+                .start = SZ_32M, /* We expect the bootloader to map
+                                  * the flash here.
+                                  */
+                .end   = SZ_32M + SZ_16M - 1,
+                .flags = IORESOURCE_MEM,
+        },
+        [1] = {
+                .start = SZ_32M + SZ_16M,
+                .end   = SZ_32M + SZ_32M - SZ_256K - 1,
+                .flags = IORESOURCE_MEM,
+        }
+};
+
+static struct platform_device acs5k_device_nor = {
+        .name           = "physmap-flash",
+        .id             = -1,
+        .num_resources  = ARRAY_SIZE(acs5k_nor_resource),
+        .resource       = acs5k_nor_resource,
+        .dev            = {
+                .platform_data = &acs5k_nor_pdata,
+        },
+};
+
+static void __init acs5k_register_nor(void)
+{
+        int ret;
+
+        if (acs5k_nor_partitions[0].mask_flags == 0)
+                printk(KERN_WARNING "Warning: Unprotecting bootloader and configuration partition\n");
+
+        ret = platform_device_register(&acs5k_device_nor);
+        if (ret < 0)
+                printk(KERN_ERR "failed to register physmap-flash device\n");
+}
+
+static int __init acs5k_protection_setup(char *s)
+{
+        /* We can't allocate anything here but we should be able
+         * to trivially parse s and decide if we can protect the
+         * bootloader partition or not
+         */
+        if (strcmp(s, "no") == 0)
+                acs5k_nor_partitions[0].mask_flags = 0;
+
+        return 1;
+}
+
+__setup("protect_bootloader=", acs5k_protection_setup);
+
+static void __init acs5k_init_gpio(void)
+{
+        int i;
+
+        ks8695_register_gpios();
+        for (i = 0; i < 4; ++i)
+                gpio_request(i, "ACS5K IRQ");
+        gpio_request(7, "ACS5K KS_FRDY");
+        for (i = 8; i < 16; ++i)
+                gpio_request(i, "ACS5K Unused");
+
+        gpio_request(3, "ACS5K CAN Control");
+        gpio_request(6, "ACS5K Heartbeat");
+        gpio_direction_output(3, 1); /* Default CAN_RESET high */
+        gpio_direction_output(6, 0); /* Default KS8695_ACTIVE low */
+        gpio_export(3, 0); /* export CAN_RESET as output only */
+        gpio_export(6, 0); /* export KS8695_ACTIVE as output only */
+}
+
+static void __init acs5k_init(void)
+{
+        acs5k_init_gpio();
+
+        /* Network device */
+        ks8695_add_device_lan();        /* eth0 = LAN */
+        ks8695_add_device_wan();        /* ethX = WAN */
+
+        /* NOR devices */
+        acs5k_register_nor();
+
+        /* I2C bus */
+        acs5k_i2c_init();
+}
+
+MACHINE_START(ACS5K, "Brivo Systems LLC ACS-5000 Master board")
+        /* Maintainer: Simtec Electronics. */
+        .phys_io        = KS8695_IO_PA,
+        .io_pg_offst    = (KS8695_IO_VA >> 18) & 0xfffc,
+        .boot_params    = KS8695_SDRAM_PA + 0x100,
+        .map_io         = ks8695_map_io,
+        .init_irq       = ks8695_init_irq,
+        .init_machine   = acs5k_init,
+        .timer          = &ks8695_timer,
+MACHINE_END