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