1 files changed, 141 insertions, 0 deletions

diff --git a/drivers/tty/serial/8250_acorn.c b/drivers/tty/serial/8250_acorn.c
new file mode 100644
index 000000000000..b0ce8c56f1a4
--- /dev/null
+++ b/drivers/tty/serial/8250_acorn.c
@@ -0,0 +1,141 @@
+/*
+ *  linux/drivers/serial/acorn.c
+ *
+ *  Copyright (C) 1996-2003 Russell King.
+ *
+ * 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/module.h>
+#include <linux/types.h>
+#include <linux/tty.h>
+#include <linux/serial_core.h>
+#include <linux/errno.h>
+#include <linux/ioport.h>
+#include <linux/slab.h>
+#include <linux/device.h>
+#include <linux/init.h>
+
+#include <asm/io.h>
+#include <asm/ecard.h>
+#include <asm/string.h>
+
+#include "8250.h"
+
+#define MAX_PORTS       3
+
+struct serial_card_type {
+        unsigned int    num_ports;
+        unsigned int    uartclk;
+        unsigned int    type;
+        unsigned int    offset[MAX_PORTS];
+};
+
+struct serial_card_info {
+        unsigned int    num_ports;
+        int             ports[MAX_PORTS];
+        void __iomem *vaddr;
+};
+
+static int __devinit
+serial_card_probe(struct expansion_card *ec, const struct ecard_id *id)
+{
+        struct serial_card_info *info;
+        struct serial_card_type *type = id->data;
+        struct uart_port port;
+        unsigned long bus_addr;
+        unsigned int i;
+
+        info = kzalloc(sizeof(struct serial_card_info), GFP_KERNEL);
+        if (!info)
+                return -ENOMEM;
+
+        info->num_ports = type->num_ports;
+
+        bus_addr = ecard_resource_start(ec, type->type);
+        info->vaddr = ecardm_iomap(ec, type->type, 0, 0);
+        if (!info->vaddr) {
+                kfree(info);
+                return -ENOMEM;
+        }
+
+        ecard_set_drvdata(ec, info);
+
+        memset(&port, 0, sizeof(struct uart_port));
+        port.irq        = ec->irq;
+        port.flags      = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ;
+        port.uartclk    = type->uartclk;
+        port.iotype     = UPIO_MEM;
+        port.regshift   = 2;
+        port.dev        = &ec->dev;
+
+        for (i = 0; i < info->num_ports; i ++) {
+                port.membase = info->vaddr + type->offset[i];
+                port.mapbase = bus_addr + type->offset[i];
+
+                info->ports[i] = serial8250_register_port(&port);
+        }
+
+        return 0;
+}
+
+static void __devexit serial_card_remove(struct expansion_card *ec)
+{
+        struct serial_card_info *info = ecard_get_drvdata(ec);
+        int i;
+
+        ecard_set_drvdata(ec, NULL);
+
+        for (i = 0; i < info->num_ports; i++)
+                if (info->ports[i] > 0)
+                        serial8250_unregister_port(info->ports[i]);
+
+        kfree(info);
+}
+
+static struct serial_card_type atomwide_type = {
+        .num_ports      = 3,
+        .uartclk        = 7372800,
+        .type           = ECARD_RES_IOCSLOW,
+        .offset         = { 0x2800, 0x2400, 0x2000 },
+};
+
+static struct serial_card_type serport_type = {
+        .num_ports      = 2,
+        .uartclk        = 3686400,
+        .type           = ECARD_RES_IOCSLOW,
+        .offset         = { 0x2000, 0x2020 },
+};
+
+static const struct ecard_id serial_cids[] = {
+        { MANU_ATOMWIDE,        PROD_ATOMWIDE_3PSERIAL, &atomwide_type  },
+        { MANU_SERPORT,         PROD_SERPORT_DSPORT,    &serport_type   },
+        { 0xffff, 0xffff }
+};
+
+static struct ecard_driver serial_card_driver = {
+        .probe          = serial_card_probe,
+        .remove         = __devexit_p(serial_card_remove),
+        .id_table       = serial_cids,
+        .drv = {
+                .name   = "8250_acorn",
+        },
+};
+
+static int __init serial_card_init(void)
+{
+        return ecard_register_driver(&serial_card_driver);
+}
+
+static void __exit serial_card_exit(void)
+{
+        ecard_remove_driver(&serial_card_driver);
+}
+
+MODULE_AUTHOR("Russell King");
+MODULE_DESCRIPTION("Acorn 8250-compatible serial port expansion card driver");
+MODULE_LICENSE("GPL");
+
+module_init(serial_card_init);
+module_exit(serial_card_exit);