ARM: ks8695: add board support for the OpenGear boards based on the KS8695

A number of boards produced by OpenGear and based on the Micrel KS8695 SoC.
Add board support to the KS8695 kernel code to support them.

The following machine type entries will need to be added back into the
mach-types file with these in mainline:

    cm4008      MACH_CM4008       CM4008       624
    cm41xx      MACH_CM41XX       CM41XX       672
    cm4002      MACH_CM4002       CM4002       876
    im42xx      MACH_IM42XX       IM42XX       1105
    im4004      MACH_IM4004       IM4004       1400

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Olof Johansson <olof@lixom.net>

3 files changed, 243 insertions, 0 deletions

diff --git a/arch/arm/mach-ks8695/Kconfig b/arch/arm/mach-ks8695/Kconfig
index f6b737eb79fc..a545976bdbd6 100644
--- a/arch/arm/mach-ks8695/Kconfig
+++ b/arch/arm/mach-ks8695/Kconfig
@@ -43,6 +43,45 @@ config MACH_SE4200
           Internet Router.
           See http://www.securecomputing.com for more details.
 
+config MACH_CM4002
+        bool "OpenGear CM4002"
+        help
+          Say 'Y' here if you want your kernel to support the OpenGear
+          CM4002 Secure Access Server. See http://www.opengear.com for
+          more details.
+
+config MACH_CM4008
+        bool "OpenGear CM4008"
+        select MIGHT_HAVE_PCI
+        help
+          Say 'Y' here if you want your kernel to support the OpenGear
+          CM4008 Console Server. See http://www.opengear.com for more
+          details.
+
+config MACH_CM41xx
+        bool "OpenGear CM41xx"
+        select MIGHT_HAVE_PCI
+        help
+          Say 'Y' here if you want your kernel to support the OpenGear
+          CM4016 or CM4048 Console Servers. See http://www.opengear.com for
+          more details.
+
+config MACH_IM4004
+        bool "OpenGear IM4004"
+        select MIGHT_HAVE_PCI
+        help
+          Say 'Y' here if you want your kernel to support the OpenGear
+          IM4004 Secure Access Server. See http://www.opengear.com for
+          more details.
+
+config MACH_IM42xx
+        bool "OpenGear IM42xx"
+        select MIGHT_HAVE_PCI
+        help
+          Say 'Y' here if you want your kernel to support the OpenGear
+          IM4216 or IM4248 Console Servers. See http://www.opengear.com for
+          more details.
+
 endmenu
 
 endif
diff --git a/arch/arm/mach-ks8695/Makefile b/arch/arm/mach-ks8695/Makefile
index 9673c0ccc5dd..50980e6b1c1f 100644
--- a/arch/arm/mach-ks8695/Makefile
+++ b/arch/arm/mach-ks8695/Makefile
@@ -21,3 +21,8 @@ obj-$(CONFIG_MACH_ACS5K)	+= board-acs5k.o
 obj-$(CONFIG_MACH_LITE300)      += board-sg.o
 obj-$(CONFIG_MACH_SG310)        += board-sg.o
 obj-$(CONFIG_MACH_SE4200)       += board-sg.o
+obj-$(CONFIG_MACH_CM4002)       += board-og.o
+obj-$(CONFIG_MACH_CM4008)       += board-og.o
+obj-$(CONFIG_MACH_CM41xx)       += board-og.o
+obj-$(CONFIG_MACH_IM4004)       += board-og.o
+obj-$(CONFIG_MACH_IM42xx)       += board-og.o
diff --git a/arch/arm/mach-ks8695/board-og.c b/arch/arm/mach-ks8695/board-og.c
new file mode 100644
index 000000000000..1623ba461e47
--- /dev/null
+++ b/arch/arm/mach-ks8695/board-og.c
@@ -0,0 +1,199 @@
+/*
+ * board-og.c -- support for the OpenGear KS8695 based boards.
+ *
+ * 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/delay.h>
+#include <linux/platform_device.h>
+#include <linux/serial_8250.h>
+#include <linux/gpio.h>
+#include <linux/irq.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <mach/devices.h>
+#include <mach/regs-gpio.h>
+#include <mach/gpio-ks8695.h>
+#include "generic.h"
+
+static int og_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
+{
+        if (machine_is_im4004() && (slot == 8))
+                return KS8695_IRQ_EXTERN1;
+        return KS8695_IRQ_EXTERN0;
+}
+
+static struct ks8695_pci_cfg __initdata og_pci = {
+        .mode           = KS8695_MODE_PCI,
+        .map_irq        = og_pci_map_irq,
+};
+
+static void __init og_register_pci(void)
+{
+        /* Initialize the GPIO lines for interrupt mode */
+        ks8695_gpio_interrupt(KS8695_GPIO_0, IRQ_TYPE_LEVEL_LOW);
+
+        /* Cardbus Slot */
+        if (machine_is_im4004())
+                ks8695_gpio_interrupt(KS8695_GPIO_1, IRQ_TYPE_LEVEL_LOW);
+
+        ks8695_init_pci(&og_pci);
+}
+
+/*
+ * The PCI bus reset is driven by a dedicated GPIO line. Toggle it here
+ * and bring the PCI bus out of reset.
+ */
+static void __init og_pci_bus_reset(void)
+{
+        unsigned int rstline = 1;
+
+        /* Some boards use a different GPIO as the PCI reset line */
+        if (machine_is_im4004())
+                rstline = 2;
+        else if (machine_is_im42xx())
+                rstline = 0;
+
+        gpio_request(rstline, "PCI reset");
+        gpio_direction_output(rstline, 0);
+
+        /* Drive a reset on the PCI reset line */
+        gpio_set_value(rstline, 1);
+        gpio_set_value(rstline, 0);
+        mdelay(100);
+        gpio_set_value(rstline, 1);
+        mdelay(100);
+}
+
+/*
+ * Direct connect serial ports (non-PCI that is).
+ */
+#define S8250_PHYS      0x03800000
+#define S8250_VIRT      0xf4000000
+#define S8250_SIZE      0x00100000
+
+static struct __initdata map_desc og_io_desc[] = {
+        {
+                .virtual        = S8250_VIRT,
+                .pfn            = __phys_to_pfn(S8250_PHYS),
+                .length         = S8250_SIZE,
+                .type           = MT_DEVICE,
+        }
+};
+
+static struct resource og_uart_resources[] = {
+        {
+                .start          = S8250_VIRT,
+                .end            = S8250_VIRT + S8250_SIZE,
+                .flags          = IORESOURCE_MEM
+        },
+};
+
+static struct plat_serial8250_port og_uart_data[] = {
+        {
+                .mapbase        = S8250_VIRT,
+                .membase        = (char *) S8250_VIRT,
+                .irq            = 3,
+                .flags          = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
+                .iotype         = UPIO_MEM,
+                .regshift       = 2,
+                .uartclk        = 115200 * 16,
+        },
+        { },
+};
+
+static struct platform_device og_uart = {
+        .name                   = "serial8250",
+        .id                     = 0,
+        .dev.platform_data      = og_uart_data,
+        .num_resources          = 1,
+        .resource               = og_uart_resources
+};
+
+static struct platform_device *og_devices[] __initdata = {
+        &og_uart
+};
+
+static void __init og_init(void)
+{
+        ks8695_register_gpios();
+
+        if (machine_is_cm4002()) {
+                ks8695_gpio_interrupt(KS8695_GPIO_1, IRQ_TYPE_LEVEL_HIGH);
+                iotable_init(og_io_desc, ARRAY_SIZE(og_io_desc));
+                platform_add_devices(og_devices, ARRAY_SIZE(og_devices));
+        } else {
+                og_pci_bus_reset();
+                og_register_pci();
+        }
+
+        ks8695_add_device_lan();
+        ks8695_add_device_wan();
+}
+
+#ifdef CONFIG_MACH_CM4002
+MACHINE_START(CM4002, "OpenGear/CM4002")
+        /* OpenGear Inc. */
+        .atag_offset    = 0x100,
+        .map_io         = ks8695_map_io,
+        .init_irq       = ks8695_init_irq,
+        .init_machine   = og_init,
+        .timer          = &ks8695_timer,
+        .restart        = ks8695_restart,
+MACHINE_END
+#endif
+
+#ifdef CONFIG_MACH_CM4008
+MACHINE_START(CM4008, "OpenGear/CM4008")
+        /* OpenGear Inc. */
+        .atag_offset    = 0x100,
+        .map_io         = ks8695_map_io,
+        .init_irq       = ks8695_init_irq,
+        .init_machine   = og_init,
+        .timer          = &ks8695_timer,
+        .restart        = ks8695_restart,
+MACHINE_END
+#endif
+
+#ifdef CONFIG_MACH_CM41xx
+MACHINE_START(CM41XX, "OpenGear/CM41xx")
+        /* OpenGear Inc. */
+        .atag_offset    = 0x100,
+        .map_io         = ks8695_map_io,
+        .init_irq       = ks8695_init_irq,
+        .init_machine   = og_init,
+        .timer          = &ks8695_timer,
+        .restart        = ks8695_restart,
+MACHINE_END
+#endif
+
+#ifdef CONFIG_MACH_IM4004
+MACHINE_START(IM4004, "OpenGear/IM4004")
+        /* OpenGear Inc. */
+        .atag_offset    = 0x100,
+        .map_io         = ks8695_map_io,
+        .init_irq       = ks8695_init_irq,
+        .init_machine   = og_init,
+        .timer          = &ks8695_timer,
+        .restart        = ks8695_restart,
+MACHINE_END
+#endif
+
+#ifdef CONFIG_MACH_IM42xx
+MACHINE_START(IM42XX, "OpenGear/IM42xx")
+        /* OpenGear Inc. */
+        .atag_offset    = 0x100,
+        .map_io         = ks8695_map_io,
+        .init_irq       = ks8695_init_irq,
+        .init_machine   = og_init,
+        .timer          = &ks8695_timer,
+        .restart        = ks8695_restart,
+MACHINE_END
+#endif