[ARM] 3830/1: iop3xx: board support file cleanup

Revamp the iop3xx board support: move the support code for each iop
board type into its own file, start using platform serial and platform
physmap flash devices, switch to a per-board time tick rate, and get
rid of the ARCH_EP80219 and STEPD config options by doing the relevant
checks at run time.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 293 insertions, 0 deletions

diff --git a/arch/arm/mach-iop32x/iq31244.c b/arch/arm/mach-iop32x/iq31244.c
new file mode 100644
index 000000000000..88b77d32b0ac
--- /dev/null
+++ b/arch/arm/mach-iop32x/iq31244.c
@@ -0,0 +1,293 @@
+/*
+ * arch/arm/mach-iop32x/iq31244.c
+ *
+ * Board support code for the Intel EP80219 and IQ31244 platforms.
+ *
+ * Author: Rory Bolt <rorybolt@pacbell.net>
+ * Copyright (C) 2002 Rory Bolt
+ * Copyright 2003 (c) MontaVista, Software, Inc.
+ * Copyright (C) 2004 Intel Corp.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/mm.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/pm.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+#include <linux/serial_core.h>
+#include <linux/serial_8250.h>
+#include <linux/mtd/physmap.h>
+#include <linux/platform_device.h>
+#include <asm/hardware.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/pci.h>
+#include <asm/mach/time.h>
+#include <asm/mach-types.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+
+
+/*
+ * The EP80219 and IQ31244 use the same machine ID.  To find out
+ * which of the two we're running on, we look at the processor ID.
+ */
+static int is_80219(void)
+{
+        extern int processor_id;
+        return !!((processor_id & 0xffffffe0) == 0x69052e20);
+}
+
+
+/*
+ * EP80219/IQ31244 timer tick configuration.
+ */
+static void __init iq31244_timer_init(void)
+{
+        if (is_80219()) {
+                /* 33.333 MHz crystal.  */
+                iop3xx_init_time(200000000);
+        } else {
+                /* 33.000 MHz crystal.  */
+                iop3xx_init_time(198000000);
+        }
+}
+
+static struct sys_timer iq31244_timer = {
+        .init           = iq31244_timer_init,
+        .offset         = iop3xx_gettimeoffset,
+};
+
+
+/*
+ * IQ31244 I/O.
+ */
+static struct map_desc iq31244_io_desc[] __initdata = {
+        {       /* on-board devices */
+                .virtual        = IQ31244_UART,
+                .pfn            = __phys_to_pfn(IQ31244_UART),
+                .length         = 0x00100000,
+                .type           = MT_DEVICE,
+        },
+};
+
+void __init iq31244_map_io(void)
+{
+        iop3xx_map_io();
+        iotable_init(iq31244_io_desc, ARRAY_SIZE(iq31244_io_desc));
+}
+
+
+/*
+ * EP80219/IQ31244 PCI.
+ */
+static inline int __init
+ep80219_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+{
+        int irq;
+
+        if (slot == 0) {
+                /* CFlash */
+                irq = IRQ_IOP321_XINT1;
+        } else if (slot == 1) {
+                /* 82551 Pro 100 */
+                irq = IRQ_IOP321_XINT0;
+        } else if (slot == 2) {
+                /* PCI-X Slot */
+                irq = IRQ_IOP321_XINT3;
+        } else if (slot == 3) {
+                /* SATA */
+                irq = IRQ_IOP321_XINT2;
+        } else {
+                printk(KERN_ERR "ep80219_pci_map_irq() called for unknown "
+                        "device PCI:%d:%d:%d\n", dev->bus->number,
+                        PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
+                irq = -1;
+        }
+
+        return irq;
+}
+
+static struct hw_pci ep80219_pci __initdata = {
+        .swizzle        = pci_std_swizzle,
+        .nr_controllers = 1,
+        .setup          = iop3xx_pci_setup,
+        .preinit        = iop3xx_pci_preinit,
+        .scan           = iop3xx_pci_scan_bus,
+        .map_irq        = ep80219_pci_map_irq,
+};
+
+static inline int __init
+iq31244_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+{
+        int irq;
+
+        if (slot == 0) {
+                /* CFlash */
+                irq = IRQ_IOP321_XINT1;
+        } else if (slot == 1) {
+                /* SATA */
+                irq = IRQ_IOP321_XINT2;
+        } else if (slot == 2) {
+                /* PCI-X Slot */
+                irq = IRQ_IOP321_XINT3;
+        } else if (slot == 3) {
+                /* 82546 GigE */
+                irq = IRQ_IOP321_XINT0;
+        } else {
+                printk(KERN_ERR "iq31244_pci_map_irq() called for unknown "
+                        "device PCI:%d:%d:%d\n", dev->bus->number,
+                        PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
+                irq = -1;
+        }
+
+        return irq;
+}
+
+static struct hw_pci iq31244_pci __initdata = {
+        .swizzle        = pci_std_swizzle,
+        .nr_controllers = 1,
+        .setup          = iop3xx_pci_setup,
+        .preinit        = iop3xx_pci_preinit,
+        .scan           = iop3xx_pci_scan_bus,
+        .map_irq        = iq31244_pci_map_irq,
+};
+
+static int __init iq31244_pci_init(void)
+{
+        if (machine_is_iq31244()) {
+                if (is_80219()) {
+                        pci_common_init(&ep80219_pci);
+                } else {
+                        pci_common_init(&iq31244_pci);
+                }
+        }
+
+        return 0;
+}
+
+subsys_initcall(iq31244_pci_init);
+
+
+/*
+ * IQ31244 machine initialisation.
+ */
+static struct physmap_flash_data iq31244_flash_data = {
+        .width          = 2,
+};
+
+static struct resource iq31244_flash_resource = {
+        .start          = 0xf0000000,
+        .end            = 0xf07fffff,
+        .flags          = IORESOURCE_MEM,
+};
+
+static struct platform_device iq31244_flash_device = {
+        .name           = "physmap-flash",
+        .id             = 0,
+        .dev            = {
+                .platform_data  = &iq31244_flash_data,
+        },
+        .num_resources  = 1,
+        .resource       = &iq31244_flash_resource,
+};
+
+static struct plat_serial8250_port iq31244_serial_port[] = {
+        {
+                .mapbase        = IQ31244_UART,
+                .membase        = (char *)IQ31244_UART,
+                .irq            = IRQ_IOP321_XINT1,
+                .flags          = UPF_SKIP_TEST,
+                .iotype         = UPIO_MEM,
+                .regshift       = 0,
+                .uartclk        = 1843200,
+        },
+        { },
+};
+
+static struct resource iq31244_uart_resource = {
+        .start          = IQ31244_UART,
+        .end            = IQ31244_UART + 7,
+        .flags          = IORESOURCE_MEM,
+};
+
+static struct platform_device iq31244_serial_device = {
+        .name           = "serial8250",
+        .id             = PLAT8250_DEV_PLATFORM,
+        .dev            = {
+                .platform_data          = iq31244_serial_port,
+        },
+        .num_resources  = 1,
+        .resource       = &iq31244_uart_resource,
+};
+
+/*
+ * This function will send a SHUTDOWN_COMPLETE message to the PIC
+ * controller over I2C.  We are not using the i2c subsystem since
+ * we are going to power off and it may be removed
+ */
+void ep80219_power_off(void)
+{
+        /*
+         * Send the Address byte w/ the start condition
+         */
+        *IOP3XX_IDBR1 = 0x60;
+        *IOP3XX_ICR1 = 0xE9;
+        mdelay(1);
+
+        /*
+         * Send the START_MSG byte w/ no start or stop condition
+         */
+        *IOP3XX_IDBR1 = 0x0F;
+        *IOP3XX_ICR1 = 0xE8;
+        mdelay(1);
+
+        /*
+         * Send the SHUTDOWN_COMPLETE Message ID byte w/ no start or
+         * stop condition
+         */
+        *IOP3XX_IDBR1 = 0x03;
+        *IOP3XX_ICR1 = 0xE8;
+        mdelay(1);
+
+        /*
+         * Send an ignored byte w/ stop condition
+         */
+        *IOP3XX_IDBR1 = 0x00;
+        *IOP3XX_ICR1 = 0xEA;
+
+        while (1)
+                ;
+}
+
+static void __init iq31244_init_machine(void)
+{
+        platform_device_register(&iop3xx_i2c0_device);
+        platform_device_register(&iop3xx_i2c1_device);
+        platform_device_register(&iq31244_flash_device);
+        platform_device_register(&iq31244_serial_device);
+
+        if (is_80219())
+                pm_power_off = ep80219_power_off;
+}
+
+MACHINE_START(IQ31244, "Intel IQ31244")
+        /* Maintainer: Intel Corp. */
+        .phys_io        = IQ31244_UART,
+        .io_pg_offst    = ((IQ31244_UART) >> 18) & 0xfffc,
+        .boot_params    = 0xa0000100,
+        .map_io         = iq31244_map_io,
+        .init_irq       = iop321_init_irq,
+        .timer          = &iq31244_timer,
+        .init_machine   = iq31244_init_machine,
+MACHINE_END