[linux.git] / drivers / parport / parport_mfc3.c

// SPDX-License-Identifier: GPL-2.0-only
/* Low-level parallel port routines for the Multiface 3 card
 *
 * Author: Joerg Dorchain <[email protected]>
 *
 * (C) The elitist m68k Users(TM)
 *
 * based on the existing parport_amiga and lp_mfc
 *
 *
 * From the MFC3 documentation:
 * 
 * Miscellaneous PIA Details
 * -------------------------
 * 
 * 	The two open-drain interrupt outputs /IRQA and /IRQB are routed to
 * /INT2 of the Z2 bus.
 * 
 * 	The CPU data bus of the PIA (D0-D7) is connected to D8-D15 on the Z2
 * bus. This means that any PIA registers are accessed at even addresses.
 * 
 * Centronics Pin Connections for the PIA
 * --------------------------------------
 * 
 * 	The following table shows the connections between the PIA and the
 * Centronics interface connector. These connections implement a single, but
 * very complete, Centronics type interface. The Pin column gives the pin
 * numbers of the PIA. The Centronics pin numbers can be found in the section
 * "Parallel Connectors".
 * 
 * 
 *    Pin | PIA | Dir | Centronics Names
 * -------+-----+-----+---------------------------------------------------------
 *     19 | CB2 | --> | /STROBE (aka /DRDY)
 *  10-17 | PBx | <-> | DATA0 - DATA7
 *     18 | CB1 | <-- | /ACK
 *     40 | CA1 | <-- | BUSY
 *      3 | PA1 | <-- | PAPER-OUT (aka POUT)
 *      4 | PA2 | <-- | SELECTED (aka SEL)
 *      9 | PA7 | --> | /INIT (aka /RESET or /INPUT-PRIME)
 *      6 | PA4 | <-- | /ERROR (aka /FAULT)
 *      7 | PA5 | --> | DIR (aka /SELECT-IN)
 *      8 | PA6 | --> | /AUTO-FEED-XT
 *     39 | CA2 | --> | open
 *      5 | PA3 | <-- | /ACK (same as CB1!)
 *      2 | PA0 | <-- | BUSY (same as CA1!)
 * -------+-----+-----+---------------------------------------------------------
 * 
 * Should be enough to understand some of the driver.
 *
 * Per convention for normal use the port registers are visible.
 * If you need the data direction registers, restore the value in the
 * control register.
 */

#include "multiface.h"
#include <linux/module.h>
#include <linux/init.h>
#include <linux/parport.h>
#include <linux/delay.h>
#include <linux/mc6821.h>
#include <linux/zorro.h>
#include <linux/interrupt.h>
#include <asm/setup.h>
#include <asm/amigahw.h>
#include <asm/irq.h>
#include <asm/amigaints.h>

/* Maximum Number of Cards supported */
#define MAX_MFC 5

#undef DEBUG

static struct parport *this_port[MAX_MFC] = {NULL, };
static volatile int dummy; /* for trigger readds */

#define pia(dev) ((struct pia *)(dev->base))
static struct parport_operations pp_mfc3_ops;

static void mfc3_write_data(struct parport *p, unsigned char data)
{
	pr_debug("write_data %c\n", data);

	dummy = pia(p)->pprb; /* clears irq bit */
	/* Triggers also /STROBE.*/
	pia(p)->pprb = data;
}

static unsigned char mfc3_read_data(struct parport *p)
{
	/* clears interrupt bit. Triggers also /STROBE. */
	return pia(p)->pprb;
}

static unsigned char control_pc_to_mfc3(unsigned char control)
{
	unsigned char ret = 32|64;

	if (control & PARPORT_CONTROL_SELECT) /* XXX: What is SELECP? */
		ret &= ~32; /* /SELECT_IN */
	if (control & PARPORT_CONTROL_INIT) /* INITP */
		ret |= 128;
	if (control & PARPORT_CONTROL_AUTOFD) /* AUTOLF */
		ret &= ~64;
	if (control & PARPORT_CONTROL_STROBE) /* Strobe */
		/* Handled directly by hardware */;
	return ret;
}

static unsigned char control_mfc3_to_pc(unsigned char control)
{
	unsigned char ret = PARPORT_CONTROL_STROBE 
			  | PARPORT_CONTROL_AUTOFD | PARPORT_CONTROL_SELECT;

	if (control & 128) /* /INITP */
		ret |= PARPORT_CONTROL_INIT;
	if (control & 64) /* /AUTOLF */
		ret &= ~PARPORT_CONTROL_AUTOFD;
	if (control & 32) /* /SELECT_IN */
		ret &= ~PARPORT_CONTROL_SELECT;
	return ret;
}

static void mfc3_write_control(struct parport *p, unsigned char control)
{
	pr_debug("write_control %02x\n", control);
	pia(p)->ppra = (pia(p)->ppra & 0x1f) | control_pc_to_mfc3(control);
}
	
static unsigned char mfc3_read_control( struct parport *p)
{
	pr_debug("read_control\n");
	return control_mfc3_to_pc(pia(p)->ppra & 0xe0);
}

static unsigned char mfc3_frob_control( struct parport *p, unsigned char mask, unsigned char val)
{
	unsigned char old;

	pr_debug("frob_control mask %02x, value %02x\n", mask, val);
	old = mfc3_read_control(p);
	mfc3_write_control(p, (old & ~mask) ^ val);
	return old;
}

static unsigned char status_mfc3_to_pc(unsigned char status)
{
	unsigned char ret = PARPORT_STATUS_BUSY;

	if (status & 1) /* Busy */
		ret &= ~PARPORT_STATUS_BUSY;
	if (status & 2) /* PaperOut */
		ret |= PARPORT_STATUS_PAPEROUT;
	if (status & 4) /* Selected */
		ret |= PARPORT_STATUS_SELECT;
	if (status & 8) /* Ack */
		ret |= PARPORT_STATUS_ACK;
	if (status & 16) /* /ERROR */
		ret |= PARPORT_STATUS_ERROR;

	return ret;
}

static unsigned char mfc3_read_status(struct parport *p)
{
	unsigned char status;

	status = status_mfc3_to_pc(pia(p)->ppra & 0x1f);
	pr_debug("read_status %02x\n", status);
	return status;
}

static int use_cnt;

static irqreturn_t mfc3_interrupt(int irq, void *dev_id)
{
	int i;

	for( i = 0; i < MAX_MFC; i++)
		if (this_port[i] != NULL)
			if (pia(this_port[i])->crb & 128) { /* Board caused interrupt */
				dummy = pia(this_port[i])->pprb; /* clear irq bit */
				parport_generic_irq(this_port[i]);
			}
	return IRQ_HANDLED;
}

static void mfc3_enable_irq(struct parport *p)
{
	pia(p)->crb |= PIA_C1_ENABLE_IRQ;
}

static void mfc3_disable_irq(struct parport *p)
{
	pia(p)->crb &= ~PIA_C1_ENABLE_IRQ;
}

static void mfc3_data_forward(struct parport *p)
{
	pr_debug("forward\n");
	pia(p)->crb &= ~PIA_DDR; /* make data direction register visible */
	pia(p)->pddrb = 255; /* all pins output */
	pia(p)->crb |= PIA_DDR; /* make data register visible - default */
}

static void mfc3_data_reverse(struct parport *p)
{
	pr_debug("reverse\n");
	pia(p)->crb &= ~PIA_DDR; /* make data direction register visible */
	pia(p)->pddrb = 0; /* all pins input */
	pia(p)->crb |= PIA_DDR; /* make data register visible - default */
}

static void mfc3_init_state(struct pardevice *dev, struct parport_state *s)
{
	s->u.amiga.data = 0;
	s->u.amiga.datadir = 255;
	s->u.amiga.status = 0;
	s->u.amiga.statusdir = 0xe0;
}

static void mfc3_save_state(struct parport *p, struct parport_state *s)
{
	s->u.amiga.data = pia(p)->pprb;
	pia(p)->crb &= ~PIA_DDR;
	s->u.amiga.datadir = pia(p)->pddrb;
	pia(p)->crb |= PIA_DDR;
	s->u.amiga.status = pia(p)->ppra;
	pia(p)->cra &= ~PIA_DDR;
	s->u.amiga.statusdir = pia(p)->pddrb;
	pia(p)->cra |= PIA_DDR;
}

static void mfc3_restore_state(struct parport *p, struct parport_state *s)
{
	pia(p)->pprb = s->u.amiga.data;
	pia(p)->crb &= ~PIA_DDR;
	pia(p)->pddrb = s->u.amiga.datadir;
	pia(p)->crb |= PIA_DDR;
	pia(p)->ppra = s->u.amiga.status;
	pia(p)->cra &= ~PIA_DDR;
	pia(p)->pddrb = s->u.amiga.statusdir;
	pia(p)->cra |= PIA_DDR;
}

static struct parport_operations pp_mfc3_ops = {
	.write_data	= mfc3_write_data,
	.read_data	= mfc3_read_data,

	.write_control	= mfc3_write_control,
	.read_control	= mfc3_read_control,
	.frob_control	= mfc3_frob_control,

	.read_status	= mfc3_read_status,

	.enable_irq	= mfc3_enable_irq,
	.disable_irq	= mfc3_disable_irq,

	.data_forward	= mfc3_data_forward, 
	.data_reverse	= mfc3_data_reverse, 

	.init_state	= mfc3_init_state,
	.save_state	= mfc3_save_state,
	.restore_state	= mfc3_restore_state,

	.epp_write_data	= parport_ieee1284_epp_write_data,
	.epp_read_data	= parport_ieee1284_epp_read_data,
	.epp_write_addr	= parport_ieee1284_epp_write_addr,
	.epp_read_addr	= parport_ieee1284_epp_read_addr,

	.ecp_write_data	= parport_ieee1284_ecp_write_data,
	.ecp_read_data	= parport_ieee1284_ecp_read_data,
	.ecp_write_addr	= parport_ieee1284_ecp_write_addr,

	.compat_write_data	= parport_ieee1284_write_compat,
	.nibble_read_data	= parport_ieee1284_read_nibble,
	.byte_read_data		= parport_ieee1284_read_byte,

	.owner		= THIS_MODULE,
};

/* ----------- Initialisation code --------------------------------- */

static int __init parport_mfc3_init(void)
{
	struct parport *p;
	int pias = 0;
	struct pia *pp;
	struct zorro_dev *z = NULL;

	if (!MACH_IS_AMIGA)
		return -ENODEV;

	while ((z = zorro_find_device(ZORRO_PROD_BSC_MULTIFACE_III, z))) {
		unsigned long piabase = z->resource.start+PIABASE;
		if (!request_mem_region(piabase, sizeof(struct pia), "PIA"))
			continue;

		pp = ZTWO_VADDR(piabase);
		pp->crb = 0;
		pp->pddrb = 255; /* all data pins output */
		pp->crb = PIA_DDR|32|8;
		dummy = pp->pddrb; /* reading clears interrupt */
		pp->cra = 0;
		pp->pddra = 0xe0; /* /RESET,  /DIR ,/AUTO-FEED output */
		pp->cra = PIA_DDR;
		pp->ppra = 0; /* reset printer */
		udelay(10);
		pp->ppra = 128;
		p = parport_register_port((unsigned long)pp, IRQ_AMIGA_PORTS,
					  PARPORT_DMA_NONE, &pp_mfc3_ops);
		if (!p)
			goto out_port;

		if (p->irq != PARPORT_IRQ_NONE) {
			if (use_cnt++ == 0)
				if (request_irq(IRQ_AMIGA_PORTS, mfc3_interrupt, IRQF_SHARED, p->name, &pp_mfc3_ops))
					goto out_irq;
		}
		p->dev = &z->dev;

		this_port[pias++] = p;
		pr_info("%s: Multiface III port using irq\n", p->name);
		/* XXX: set operating mode */

		p->private_data = (void *)piabase;
		parport_announce_port (p);

		if (pias >= MAX_MFC)
			break;
		continue;

	out_irq:
		parport_put_port(p);
	out_port:
		release_mem_region(piabase, sizeof(struct pia));
	}

	return pias ? 0 : -ENODEV;
}

static void __exit parport_mfc3_exit(void)
{
	int i;

	for (i = 0; i < MAX_MFC; i++) {
		if (!this_port[i])
			continue;
		parport_remove_port(this_port[i]);
		if (this_port[i]->irq != PARPORT_IRQ_NONE) {
			if (--use_cnt == 0) 
				free_irq(IRQ_AMIGA_PORTS, &pp_mfc3_ops);
		}
		release_mem_region(ZTWO_PADDR(this_port[i]->private_data), sizeof(struct pia));
		parport_put_port(this_port[i]);
	}
}


MODULE_AUTHOR("Joerg Dorchain <[email protected]>");
MODULE_DESCRIPTION("Parport Driver for Multiface 3 expansion cards Parallel Port");
MODULE_SUPPORTED_DEVICE("Multiface 3 Parallel Port");
MODULE_LICENSE("GPL");

module_init(parport_mfc3_init)
module_exit(parport_mfc3_exit)
Commit	Line	Data
09c434b8	1	// SPDX-License-Identifier: GPL-2.0-only
1da177e4 LT	2	/* Low-level parallel port routines for the Multiface 3 card
	3	*
	4	* Author: Joerg Dorchain <[email protected]>
	5	*
	6	* (C) The elitist m68k Users(TM)
	7	*
	8	* based on the existing parport_amiga and lp_mfc
	9	*
	10	*
	11	* From the MFC3 documentation:
	12	*
	13	* Miscellaneous PIA Details
	14	* -------------------------
	15	*
	16	* The two open-drain interrupt outputs /IRQA and /IRQB are routed to
	17	* /INT2 of the Z2 bus.
	18	*
	19	* The CPU data bus of the PIA (D0-D7) is connected to D8-D15 on the Z2
	20	* bus. This means that any PIA registers are accessed at even addresses.
	21	*
	22	* Centronics Pin Connections for the PIA
	23	* --------------------------------------
	24	*
	25	* The following table shows the connections between the PIA and the
	26	* Centronics interface connector. These connections implement a single, but
	27	* very complete, Centronics type interface. The Pin column gives the pin
	28	* numbers of the PIA. The Centronics pin numbers can be found in the section
	29	* "Parallel Connectors".
	30	*
	31	*
	32	* Pin \| PIA \| Dir \| Centronics Names
	33	* -------+-----+-----+---------------------------------------------------------
	34	* 19 \| CB2 \| --> \| /STROBE (aka /DRDY)
	35	* 10-17 \| PBx \| <-> \| DATA0 - DATA7
	36	* 18 \| CB1 \| <-- \| /ACK
	37	* 40 \| CA1 \| <-- \| BUSY
	38	* 3 \| PA1 \| <-- \| PAPER-OUT (aka POUT)
	39	* 4 \| PA2 \| <-- \| SELECTED (aka SEL)
	40	* 9 \| PA7 \| --> \| /INIT (aka /RESET or /INPUT-PRIME)
	41	* 6 \| PA4 \| <-- \| /ERROR (aka /FAULT)
	42	* 7 \| PA5 \| --> \| DIR (aka /SELECT-IN)
	43	* 8 \| PA6 \| --> \| /AUTO-FEED-XT
	44	* 39 \| CA2 \| --> \| open
	45	* 5 \| PA3 \| <-- \| /ACK (same as CB1!)
	46	* 2 \| PA0 \| <-- \| BUSY (same as CA1!)
	47	* -------+-----+-----+---------------------------------------------------------
	48	*
	49	* Should be enough to understand some of the driver.
	50	*
	51	* Per convention for normal use the port registers are visible.
	52	* If you need the data direction registers, restore the value in the
	53	* control register.
	54	*/
	55
	56	#include "multiface.h"
	57	#include <linux/module.h>
	58	#include <linux/init.h>
	59	#include <linux/parport.h>
	60	#include <linux/delay.h>
	61	#include <linux/mc6821.h>
	62	#include <linux/zorro.h>
	63	#include <linux/interrupt.h>
	64	#include <asm/setup.h>
	65	#include <asm/amigahw.h>
66	#include <asm/irq.h>
67	#include <asm/amigaints.h>
68
69	/* Maximum Number of Cards supported */
70	#define MAX_MFC 5
71
72	#undef DEBUG
1da177e4 LT	73
	74	static struct parport *this_port[MAX_MFC] = {NULL, };
	75	static volatile int dummy; /* for trigger readds */
	76
	77	#define pia(dev) ((struct pia *)(dev->base))
	78	static struct parport_operations pp_mfc3_ops;
	79
	80	static void mfc3_write_data(struct parport *p, unsigned char data)
	81	{
46aea0d4	82	pr_debug("write_data %c\n", data);
1da177e4 LT	83
	84	dummy = pia(p)->pprb; /* clears irq bit */
	85	/* Triggers also /STROBE.*/
	86	pia(p)->pprb = data;
	87	}
	88
	89	static unsigned char mfc3_read_data(struct parport *p)
	90	{
	91	/* clears interrupt bit. Triggers also /STROBE. */
	92	return pia(p)->pprb;
	93	}
	94
	95	static unsigned char control_pc_to_mfc3(unsigned char control)
	96	{
	97	unsigned char ret = 32\|64;
	98
	99	if (control & PARPORT_CONTROL_SELECT) /* XXX: What is SELECP? */
	100	ret &= ~32; /* /SELECT_IN */
	101	if (control & PARPORT_CONTROL_INIT) /* INITP */
	102	ret \|= 128;
	103	if (control & PARPORT_CONTROL_AUTOFD) /* AUTOLF */
	104	ret &= ~64;
	105	if (control & PARPORT_CONTROL_STROBE) /* Strobe */
	106	/* Handled directly by hardware */;
	107	return ret;
	108	}
	109
	110	static unsigned char control_mfc3_to_pc(unsigned char control)
	111	{
	112	unsigned char ret = PARPORT_CONTROL_STROBE
	113	\| PARPORT_CONTROL_AUTOFD \| PARPORT_CONTROL_SELECT;
	114
	115	if (control & 128) /* /INITP */
	116	ret \|= PARPORT_CONTROL_INIT;
	117	if (control & 64) /* /AUTOLF */
	118	ret &= ~PARPORT_CONTROL_AUTOFD;
	119	if (control & 32) /* /SELECT_IN */
	120	ret &= ~PARPORT_CONTROL_SELECT;
	121	return ret;
	122	}
	123
	124	static void mfc3_write_control(struct parport *p, unsigned char control)
	125	{
46aea0d4	126	pr_debug("write_control %02x\n", control);
1da177e4 LT	127	pia(p)->ppra = (pia(p)->ppra & 0x1f) \| control_pc_to_mfc3(control);
	128	}
	129
	130	static unsigned char mfc3_read_control( struct parport *p)
	131	{
46aea0d4	132	pr_debug("read_control\n");
1da177e4 LT	133	return control_mfc3_to_pc(pia(p)->ppra & 0xe0);
	134	}
	135
	136	static unsigned char mfc3_frob_control( struct parport *p, unsigned char mask, unsigned char val)
	137	{
	138	unsigned char old;
	139
46aea0d4	140	pr_debug("frob_control mask %02x, value %02x\n", mask, val);
1da177e4 LT	141	old = mfc3_read_control(p);
	142	mfc3_write_control(p, (old & ~mask) ^ val);
	143	return old;
	144	}
	145
1da177e4 LT	146	static unsigned char status_mfc3_to_pc(unsigned char status)
	147	{
	148	unsigned char ret = PARPORT_STATUS_BUSY;
	149
	150	if (status & 1) /* Busy */
	151	ret &= ~PARPORT_STATUS_BUSY;
	152	if (status & 2) /* PaperOut */
	153	ret \|= PARPORT_STATUS_PAPEROUT;
	154	if (status & 4) /* Selected */
	155	ret \|= PARPORT_STATUS_SELECT;
	156	if (status & 8) /* Ack */
	157	ret \|= PARPORT_STATUS_ACK;
	158	if (status & 16) /* /ERROR */
	159	ret \|= PARPORT_STATUS_ERROR;
	160
	161	return ret;
	162	}
	163
1da177e4 LT	164	static unsigned char mfc3_read_status(struct parport *p)
	165	{
	166	unsigned char status;
	167
	168	status = status_mfc3_to_pc(pia(p)->ppra & 0x1f);
46aea0d4	169	pr_debug("read_status %02x\n", status);
1da177e4 LT	170	return status;
	171	}
	172
df4c756e	173	static int use_cnt;
1da177e4	174
7d12e780	175	static irqreturn_t mfc3_interrupt(int irq, void *dev_id)
1da177e4 LT	176	{
	177	int i;
	178
	179	for( i = 0; i < MAX_MFC; i++)
	180	if (this_port[i] != NULL)
	181	if (pia(this_port[i])->crb & 128) { /* Board caused interrupt */
	182	dummy = pia(this_port[i])->pprb; /* clear irq bit */
f230d101	183	parport_generic_irq(this_port[i]);
1da177e4 LT	184	}
	185	return IRQ_HANDLED;
	186	}
	187
	188	static void mfc3_enable_irq(struct parport *p)
	189	{
	190	pia(p)->crb \|= PIA_C1_ENABLE_IRQ;
	191	}
	192
	193	static void mfc3_disable_irq(struct parport *p)
	194	{
	195	pia(p)->crb &= ~PIA_C1_ENABLE_IRQ;
	196	}
	197
	198	static void mfc3_data_forward(struct parport *p)
	199	{
46aea0d4	200	pr_debug("forward\n");
1da177e4 LT	201	pia(p)->crb &= ~PIA_DDR; /* make data direction register visible */
	202	pia(p)->pddrb = 255; /* all pins output */
	203	pia(p)->crb \|= PIA_DDR; /* make data register visible - default */
	204	}
	205
	206	static void mfc3_data_reverse(struct parport *p)
	207	{
46aea0d4	208	pr_debug("reverse\n");
1da177e4 LT	209	pia(p)->crb &= ~PIA_DDR; /* make data direction register visible */
	210	pia(p)->pddrb = 0; /* all pins input */
	211	pia(p)->crb \|= PIA_DDR; /* make data register visible - default */
	212	}
	213
	214	static void mfc3_init_state(struct pardevice dev, struct parport_state s)
	215	{
	216	s->u.amiga.data = 0;
	217	s->u.amiga.datadir = 255;
	218	s->u.amiga.status = 0;
	219	s->u.amiga.statusdir = 0xe0;
	220	}
	221
	222	static void mfc3_save_state(struct parport p, struct parport_state s)
	223	{
	224	s->u.amiga.data = pia(p)->pprb;
	225	pia(p)->crb &= ~PIA_DDR;
	226	s->u.amiga.datadir = pia(p)->pddrb;
	227	pia(p)->crb \|= PIA_DDR;
	228	s->u.amiga.status = pia(p)->ppra;
	229	pia(p)->cra &= ~PIA_DDR;
	230	s->u.amiga.statusdir = pia(p)->pddrb;
	231	pia(p)->cra \|= PIA_DDR;
	232	}
	233
	234	static void mfc3_restore_state(struct parport p, struct parport_state s)
	235	{
	236	pia(p)->pprb = s->u.amiga.data;
	237	pia(p)->crb &= ~PIA_DDR;
	238	pia(p)->pddrb = s->u.amiga.datadir;
	239	pia(p)->crb \|= PIA_DDR;
	240	pia(p)->ppra = s->u.amiga.status;
	241	pia(p)->cra &= ~PIA_DDR;
	242	pia(p)->pddrb = s->u.amiga.statusdir;
	243	pia(p)->cra \|= PIA_DDR;
	244	}
	245
	246	static struct parport_operations pp_mfc3_ops = {
	247	.write_data = mfc3_write_data,
	248	.read_data = mfc3_read_data,
	249
	250	.write_control = mfc3_write_control,
	251	.read_control = mfc3_read_control,
	252	.frob_control = mfc3_frob_control,
	253
	254	.read_status = mfc3_read_status,
	255
	256	.enable_irq = mfc3_enable_irq,
	257	.disable_irq = mfc3_disable_irq,
	258
	259	.data_forward = mfc3_data_forward,
	260	.data_reverse = mfc3_data_reverse,
	261
	262	.init_state = mfc3_init_state,
	263	.save_state = mfc3_save_state,
	264	.restore_state = mfc3_restore_state,
	265
	266	.epp_write_data = parport_ieee1284_epp_write_data,
	267	.epp_read_data = parport_ieee1284_epp_read_data,
	268	.epp_write_addr = parport_ieee1284_epp_write_addr,
	269	.epp_read_addr = parport_ieee1284_epp_read_addr,
	270
	271	.ecp_write_data = parport_ieee1284_ecp_write_data,
	272	.ecp_read_data = parport_ieee1284_ecp_read_data,
273	.ecp_write_addr = parport_ieee1284_ecp_write_addr,
274
275	.compat_write_data = parport_ieee1284_write_compat,
276	.nibble_read_data = parport_ieee1284_read_nibble,
277	.byte_read_data = parport_ieee1284_read_byte,
278
279	.owner = THIS_MODULE,
280	};
281
282	/* ----------- Initialisation code --------------------------------- */
283
284	static int __init parport_mfc3_init(void)
285	{
286	struct parport *p;
287	int pias = 0;
288	struct pia *pp;
289	struct zorro_dev *z = NULL;
290
291	if (!MACH_IS_AMIGA)
292	return -ENODEV;
293
294	while ((z = zorro_find_device(ZORRO_PROD_BSC_MULTIFACE_III, z))) {
295	unsigned long piabase = z->resource.start+PIABASE;
296	if (!request_mem_region(piabase, sizeof(struct pia), "PIA"))
297	continue;
298
6112ea08	299	pp = ZTWO_VADDR(piabase);
1da177e4 LT	300	pp->crb = 0;
	301	pp->pddrb = 255; /* all data pins output */
	302	pp->crb = PIA_DDR\|32\|8;
	303	dummy = pp->pddrb; /* reading clears interrupt */
	304	pp->cra = 0;
	305	pp->pddra = 0xe0; /* /RESET, /DIR ,/AUTO-FEED output */
	306	pp->cra = PIA_DDR;
	307	pp->ppra = 0; /* reset printer */
	308	udelay(10);
	309	pp->ppra = 128;
	310	p = parport_register_port((unsigned long)pp, IRQ_AMIGA_PORTS,
	311	PARPORT_DMA_NONE, &pp_mfc3_ops);
	312	if (!p)
	313	goto out_port;
	314
	315	if (p->irq != PARPORT_IRQ_NONE) {
	316	if (use_cnt++ == 0)
dace1453	317	if (request_irq(IRQ_AMIGA_PORTS, mfc3_interrupt, IRQF_SHARED, p->name, &pp_mfc3_ops))
1da177e4 LT	318	goto out_irq;
1da177e4 LT	319	}
c15a3837	320	p->dev = &z->dev;
1da177e4 LT	321
1da177e4 LT	322	this_port[pias++] = p;
decf26f6	323	pr_info("%s: Multiface III port using irq\n", p->name);
1da177e4 LT	324	/* XXX: set operating mode */
	325
	326	p->private_data = (void *)piabase;
	327	parport_announce_port (p);
	328
	329	if (pias >= MAX_MFC)
	330	break;
	331	continue;
	332
	333	out_irq:
	334	parport_put_port(p);
	335	out_port:
	336	release_mem_region(piabase, sizeof(struct pia));
	337	}
	338
	339	return pias ? 0 : -ENODEV;
	340	}
	341
	342	static void __exit parport_mfc3_exit(void)
	343	{
	344	int i;
	345
	346	for (i = 0; i < MAX_MFC; i++) {
	347	if (!this_port[i])
	348	continue;
	349	parport_remove_port(this_port[i]);
49966bae	350	if (this_port[i]->irq != PARPORT_IRQ_NONE) {
1da177e4 LT	351	if (--use_cnt == 0)
	352	free_irq(IRQ_AMIGA_PORTS, &pp_mfc3_ops);
	353	}
	354	release_mem_region(ZTWO_PADDR(this_port[i]->private_data), sizeof(struct pia));
	355	parport_put_port(this_port[i]);
	356	}
	357	}
	358
	359
	360	MODULE_AUTHOR("Joerg Dorchain <[email protected]>");
42b2aa86	361	MODULE_DESCRIPTION("Parport Driver for Multiface 3 expansion cards Parallel Port");
1da177e4 LT	362	MODULE_SUPPORTED_DEVICE("Multiface 3 Parallel Port");
	363	MODULE_LICENSE("GPL");
	364
	365	module_init(parport_mfc3_init)
	366	module_exit(parport_mfc3_exit)