[linux-2.6-block.git] / drivers / tty / serial / 8250 / 8250_acorn.c

// SPDX-License-Identifier: GPL-2.0
/*
 *  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
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_8250_port uart;
	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(&uart, 0, sizeof(struct uart_8250_port));
	uart.port.irq	= ec->irq;
	uart.port.flags	= UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ;
	uart.port.uartclk	= type->uartclk;
	uart.port.iotype	= UPIO_MEM;
	uart.port.regshift	= 2;
	uart.port.dev	= &ec->dev;

	for (i = 0; i < info->num_ports; i++) {
		uart.port.membase = info->vaddr + type->offset[i];
		uart.port.mapbase = bus_addr + type->offset[i];

		info->ports[i] = serial8250_register_8250_port(&uart);
	}

	return 0;
}

static void 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		= 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);
Commit	Line	Data
e3b3d0f5	1	// SPDX-License-Identifier: GPL-2.0
1da177e4 LT	2	/*
	3	* linux/drivers/serial/acorn.c
	4	*
	5	* Copyright (C) 1996-2003 Russell King.
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License version 2 as
	9	* published by the Free Software Foundation.
	10	*/
	11	#include <linux/module.h>
	12	#include <linux/types.h>
	13	#include <linux/tty.h>
	14	#include <linux/serial_core.h>
	15	#include <linux/errno.h>
	16	#include <linux/ioport.h>
	17	#include <linux/slab.h>
	18	#include <linux/device.h>
	19	#include <linux/init.h>
	20
	21	#include <asm/io.h>
	22	#include <asm/ecard.h>
	23	#include <asm/string.h>
	24
	25	#include "8250.h"
	26
	27	#define MAX_PORTS 3
	28
	29	struct serial_card_type {
	30	unsigned int num_ports;
	31	unsigned int uartclk;
	32	unsigned int type;
	33	unsigned int offset[MAX_PORTS];
	34	};
	35
	36	struct serial_card_info {
	37	unsigned int num_ports;
	38	int ports[MAX_PORTS];
f12ad7d5	39	void __iomem *vaddr;
1da177e4 LT	40	};
1da177e4 LT	41
9671f099	42	static int
1da177e4 LT	43	serial_card_probe(struct expansion_card ec, const struct ecard_id id)
	44	{
	45	struct serial_card_info *info;
	46	struct serial_card_type *type = id->data;
2655a2c7	47	struct uart_8250_port uart;
1da177e4	48	unsigned long bus_addr;
1da177e4 LT	49	unsigned int i;
1da177e4 LT	50
8f31bb39	51	info = kzalloc(sizeof(struct serial_card_info), GFP_KERNEL);
1da177e4 LT	52	if (!info)
	53	return -ENOMEM;
	54
1da177e4 LT	55	info->num_ports = type->num_ports;
	56
	57	bus_addr = ecard_resource_start(ec, type->type);
10bdaaa0	58	info->vaddr = ecardm_iomap(ec, type->type, 0, 0);
f12ad7d5	59	if (!info->vaddr) {
1da177e4 LT	60	kfree(info);
	61	return -ENOMEM;
	62	}
	63
	64	ecard_set_drvdata(ec, info);
	65
2655a2c7 AC	66	memset(&uart, 0, sizeof(struct uart_8250_port));
	67	uart.port.irq = ec->irq;
	68	uart.port.flags = UPF_BOOT_AUTOCONF \| UPF_SHARE_IRQ;
	69	uart.port.uartclk = type->uartclk;
	70	uart.port.iotype = UPIO_MEM;
	71	uart.port.regshift = 2;
	72	uart.port.dev = &ec->dev;
1da177e4	73
1a33e342	74	for (i = 0; i < info->num_ports; i++) {
2655a2c7 AC	75	uart.port.membase = info->vaddr + type->offset[i];
2655a2c7 AC	76	uart.port.mapbase = bus_addr + type->offset[i];
1da177e4	77
2655a2c7	78	info->ports[i] = serial8250_register_8250_port(&uart);
1da177e4 LT	79	}
	80
	81	return 0;
	82	}
	83
ae8d8a14	84	static void serial_card_remove(struct expansion_card *ec)
1da177e4 LT	85	{
	86	struct serial_card_info *info = ecard_get_drvdata(ec);
	87	int i;
	88
	89	ecard_set_drvdata(ec, NULL);
	90
	91	for (i = 0; i < info->num_ports; i++)
	92	if (info->ports[i] > 0)
	93	serial8250_unregister_port(info->ports[i]);
	94
	95	kfree(info);
	96	}
	97
	98	static struct serial_card_type atomwide_type = {
	99	.num_ports = 3,
	100	.uartclk = 7372800,
	101	.type = ECARD_RES_IOCSLOW,
	102	.offset = { 0x2800, 0x2400, 0x2000 },
	103	};
	104
	105	static struct serial_card_type serport_type = {
	106	.num_ports = 2,
	107	.uartclk = 3686400,
	108	.type = ECARD_RES_IOCSLOW,
	109	.offset = { 0x2000, 0x2020 },
	110	};
	111
	112	static const struct ecard_id serial_cids[] = {
	113	{ MANU_ATOMWIDE, PROD_ATOMWIDE_3PSERIAL, &atomwide_type },
	114	{ MANU_SERPORT, PROD_SERPORT_DSPORT, &serport_type },
	115	{ 0xffff, 0xffff }
	116	};
	117
	118	static struct ecard_driver serial_card_driver = {
	119	.probe = serial_card_probe,
2d47b716	120	.remove = serial_card_remove,
1da177e4 LT	121	.id_table = serial_cids,
	122	.drv = {
	123	.name = "8250_acorn",
	124	},
	125	};
	126
	127	static int __init serial_card_init(void)
	128	{
	129	return ecard_register_driver(&serial_card_driver);
	130	}
	131
	132	static void __exit serial_card_exit(void)
	133	{
	134	ecard_remove_driver(&serial_card_driver);
	135	}
	136
	137	MODULE_AUTHOR("Russell King");
	138	MODULE_DESCRIPTION("Acorn 8250-compatible serial port expansion card driver");
	139	MODULE_LICENSE("GPL");
	140
	141	module_init(serial_card_init);
	142	module_exit(serial_card_exit);