[linux-2.6-block.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 <joerg@dorchain.net>
 *
 * (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
#ifdef DEBUG
#define DPRINTK printk
#else
static inline int DPRINTK(void *nothing, ...) {return 0;}
#endif

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)
{
DPRINTK(KERN_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)
{
DPRINTK(KERN_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)
{
DPRINTK(KERN_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;

DPRINTK(KERN_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);
DPRINTK(KERN_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)
{
	DPRINTK(KERN_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)
{
	DPRINTK(KERN_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;
		printk(KERN_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 <joerg@dorchain.net>");
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 <joerg@dorchain.net>
	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
73	#ifdef DEBUG
74	#define DPRINTK printk
75	#else
76	static inline int DPRINTK(void *nothing, ...) {return 0;}
77	#endif
78
79	static struct parport *this_port[MAX_MFC] = {NULL, };
80	static volatile int dummy; /* for trigger readds */
81
82	#define pia(dev) ((struct pia *)(dev->base))
83	static struct parport_operations pp_mfc3_ops;
84
85	static void mfc3_write_data(struct parport *p, unsigned char data)
86	{
87	DPRINTK(KERN_DEBUG "write_data %c\n",data);
88
89	dummy = pia(p)->pprb; /* clears irq bit */
90	/* Triggers also /STROBE.*/
91	pia(p)->pprb = data;
92	}
93
94	static unsigned char mfc3_read_data(struct parport *p)
95	{
96	/* clears interrupt bit. Triggers also /STROBE. */
97	return pia(p)->pprb;
98	}
99
100	static unsigned char control_pc_to_mfc3(unsigned char control)
101	{
102	unsigned char ret = 32\|64;
103
104	if (control & PARPORT_CONTROL_SELECT) /* XXX: What is SELECP? */
105	ret &= ~32; /* /SELECT_IN */
106	if (control & PARPORT_CONTROL_INIT) /* INITP */
107	ret \|= 128;
108	if (control & PARPORT_CONTROL_AUTOFD) /* AUTOLF */
109	ret &= ~64;
110	if (control & PARPORT_CONTROL_STROBE) /* Strobe */
111	/* Handled directly by hardware */;
112	return ret;
113	}
114
115	static unsigned char control_mfc3_to_pc(unsigned char control)
116	{
117	unsigned char ret = PARPORT_CONTROL_STROBE
118	\| PARPORT_CONTROL_AUTOFD \| PARPORT_CONTROL_SELECT;
119
120	if (control & 128) /* /INITP */
121	ret \|= PARPORT_CONTROL_INIT;
122	if (control & 64) /* /AUTOLF */
123	ret &= ~PARPORT_CONTROL_AUTOFD;
124	if (control & 32) /* /SELECT_IN */
125	ret &= ~PARPORT_CONTROL_SELECT;
126	return ret;
127	}
128
129	static void mfc3_write_control(struct parport *p, unsigned char control)
130	{
131	DPRINTK(KERN_DEBUG "write_control %02x\n",control);
132	pia(p)->ppra = (pia(p)->ppra & 0x1f) \| control_pc_to_mfc3(control);
133	}
134
135	static unsigned char mfc3_read_control( struct parport *p)
136	{
137	DPRINTK(KERN_DEBUG "read_control \n");
138	return control_mfc3_to_pc(pia(p)->ppra & 0xe0);
139	}
140
141	static unsigned char mfc3_frob_control( struct parport *p, unsigned char mask, unsigned char val)
142	{
143	unsigned char old;
144
145	DPRINTK(KERN_DEBUG "frob_control mask %02x, value %02x\n",mask,val);
146	old = mfc3_read_control(p);
147	mfc3_write_control(p, (old & ~mask) ^ val);
148	return old;
149	}
150
1da177e4 LT	151	static unsigned char status_mfc3_to_pc(unsigned char status)
	152	{
	153	unsigned char ret = PARPORT_STATUS_BUSY;
	154
	155	if (status & 1) /* Busy */
	156	ret &= ~PARPORT_STATUS_BUSY;
	157	if (status & 2) /* PaperOut */
	158	ret \|= PARPORT_STATUS_PAPEROUT;
	159	if (status & 4) /* Selected */
	160	ret \|= PARPORT_STATUS_SELECT;
	161	if (status & 8) /* Ack */
	162	ret \|= PARPORT_STATUS_ACK;
	163	if (status & 16) /* /ERROR */
	164	ret \|= PARPORT_STATUS_ERROR;
	165
	166	return ret;
	167	}
	168
1da177e4 LT	169	static unsigned char mfc3_read_status(struct parport *p)
	170	{
	171	unsigned char status;
	172
	173	status = status_mfc3_to_pc(pia(p)->ppra & 0x1f);
	174	DPRINTK(KERN_DEBUG "read_status %02x\n", status);
	175	return status;
	176	}
	177
df4c756e	178	static int use_cnt;
1da177e4	179
7d12e780	180	static irqreturn_t mfc3_interrupt(int irq, void *dev_id)
1da177e4 LT	181	{
	182	int i;
	183
	184	for( i = 0; i < MAX_MFC; i++)
	185	if (this_port[i] != NULL)
	186	if (pia(this_port[i])->crb & 128) { /* Board caused interrupt */
	187	dummy = pia(this_port[i])->pprb; /* clear irq bit */
f230d101	188	parport_generic_irq(this_port[i]);
1da177e4 LT	189	}
	190	return IRQ_HANDLED;
	191	}
	192
	193	static void mfc3_enable_irq(struct parport *p)
	194	{
	195	pia(p)->crb \|= PIA_C1_ENABLE_IRQ;
	196	}
	197
	198	static void mfc3_disable_irq(struct parport *p)
	199	{
	200	pia(p)->crb &= ~PIA_C1_ENABLE_IRQ;
	201	}
	202
	203	static void mfc3_data_forward(struct parport *p)
	204	{
	205	DPRINTK(KERN_DEBUG "forward\n");
	206	pia(p)->crb &= ~PIA_DDR; /* make data direction register visible */
	207	pia(p)->pddrb = 255; /* all pins output */
	208	pia(p)->crb \|= PIA_DDR; /* make data register visible - default */
	209	}
	210
	211	static void mfc3_data_reverse(struct parport *p)
	212	{
	213	DPRINTK(KERN_DEBUG "reverse\n");
	214	pia(p)->crb &= ~PIA_DDR; /* make data direction register visible */
	215	pia(p)->pddrb = 0; /* all pins input */
	216	pia(p)->crb \|= PIA_DDR; /* make data register visible - default */
	217	}
	218
	219	static void mfc3_init_state(struct pardevice dev, struct parport_state s)
	220	{
	221	s->u.amiga.data = 0;
	222	s->u.amiga.datadir = 255;
	223	s->u.amiga.status = 0;
	224	s->u.amiga.statusdir = 0xe0;
	225	}
	226
	227	static void mfc3_save_state(struct parport p, struct parport_state s)
	228	{
	229	s->u.amiga.data = pia(p)->pprb;
	230	pia(p)->crb &= ~PIA_DDR;
	231	s->u.amiga.datadir = pia(p)->pddrb;
	232	pia(p)->crb \|= PIA_DDR;
	233	s->u.amiga.status = pia(p)->ppra;
	234	pia(p)->cra &= ~PIA_DDR;
	235	s->u.amiga.statusdir = pia(p)->pddrb;
	236	pia(p)->cra \|= PIA_DDR;
	237	}
	238
	239	static void mfc3_restore_state(struct parport p, struct parport_state s)
	240	{
	241	pia(p)->pprb = s->u.amiga.data;
	242	pia(p)->crb &= ~PIA_DDR;
	243	pia(p)->pddrb = s->u.amiga.datadir;
	244	pia(p)->crb \|= PIA_DDR;
	245	pia(p)->ppra = s->u.amiga.status;
	246	pia(p)->cra &= ~PIA_DDR;
	247	pia(p)->pddrb = s->u.amiga.statusdir;
	248	pia(p)->cra \|= PIA_DDR;
	249	}
	250
	251	static struct parport_operations pp_mfc3_ops = {
	252	.write_data = mfc3_write_data,
253	.read_data = mfc3_read_data,
254
255	.write_control = mfc3_write_control,
256	.read_control = mfc3_read_control,
257	.frob_control = mfc3_frob_control,
258
259	.read_status = mfc3_read_status,
260
261	.enable_irq = mfc3_enable_irq,
262	.disable_irq = mfc3_disable_irq,
263
264	.data_forward = mfc3_data_forward,
265	.data_reverse = mfc3_data_reverse,
266
267	.init_state = mfc3_init_state,
268	.save_state = mfc3_save_state,
269	.restore_state = mfc3_restore_state,
270
271	.epp_write_data = parport_ieee1284_epp_write_data,
272	.epp_read_data = parport_ieee1284_epp_read_data,
273	.epp_write_addr = parport_ieee1284_epp_write_addr,
274	.epp_read_addr = parport_ieee1284_epp_read_addr,
275
276	.ecp_write_data = parport_ieee1284_ecp_write_data,
277	.ecp_read_data = parport_ieee1284_ecp_read_data,
278	.ecp_write_addr = parport_ieee1284_ecp_write_addr,
279
280	.compat_write_data = parport_ieee1284_write_compat,
281	.nibble_read_data = parport_ieee1284_read_nibble,
282	.byte_read_data = parport_ieee1284_read_byte,
283
284	.owner = THIS_MODULE,
285	};
286
287	/* ----------- Initialisation code --------------------------------- */
288
289	static int __init parport_mfc3_init(void)
290	{
291	struct parport *p;
292	int pias = 0;
293	struct pia *pp;
294	struct zorro_dev *z = NULL;
295
296	if (!MACH_IS_AMIGA)
297	return -ENODEV;
298
299	while ((z = zorro_find_device(ZORRO_PROD_BSC_MULTIFACE_III, z))) {
300	unsigned long piabase = z->resource.start+PIABASE;
301	if (!request_mem_region(piabase, sizeof(struct pia), "PIA"))
302	continue;
303
6112ea08	304	pp = ZTWO_VADDR(piabase);
1da177e4 LT	305	pp->crb = 0;
	306	pp->pddrb = 255; /* all data pins output */
	307	pp->crb = PIA_DDR\|32\|8;
	308	dummy = pp->pddrb; /* reading clears interrupt */
	309	pp->cra = 0;
	310	pp->pddra = 0xe0; /* /RESET, /DIR ,/AUTO-FEED output */
	311	pp->cra = PIA_DDR;
	312	pp->ppra = 0; /* reset printer */
	313	udelay(10);
	314	pp->ppra = 128;
	315	p = parport_register_port((unsigned long)pp, IRQ_AMIGA_PORTS,
	316	PARPORT_DMA_NONE, &pp_mfc3_ops);
	317	if (!p)
	318	goto out_port;
	319
	320	if (p->irq != PARPORT_IRQ_NONE) {
	321	if (use_cnt++ == 0)
dace1453	322	if (request_irq(IRQ_AMIGA_PORTS, mfc3_interrupt, IRQF_SHARED, p->name, &pp_mfc3_ops))
1da177e4 LT	323	goto out_irq;
1da177e4 LT	324	}
c15a3837	325	p->dev = &z->dev;
1da177e4 LT	326
	327	this_port[pias++] = p;
	328	printk(KERN_INFO "%s: Multiface III port using irq\n", p->name);
	329	/* XXX: set operating mode */
	330
	331	p->private_data = (void *)piabase;
	332	parport_announce_port (p);
	333
	334	if (pias >= MAX_MFC)
	335	break;
	336	continue;
	337
	338	out_irq:
	339	parport_put_port(p);
	340	out_port:
	341	release_mem_region(piabase, sizeof(struct pia));
	342	}
	343
	344	return pias ? 0 : -ENODEV;
	345	}
	346
	347	static void __exit parport_mfc3_exit(void)
	348	{
	349	int i;
	350
	351	for (i = 0; i < MAX_MFC; i++) {
	352	if (!this_port[i])
	353	continue;
	354	parport_remove_port(this_port[i]);
49966bae	355	if (this_port[i]->irq != PARPORT_IRQ_NONE) {
1da177e4 LT	356	if (--use_cnt == 0)
	357	free_irq(IRQ_AMIGA_PORTS, &pp_mfc3_ops);
	358	}
	359	release_mem_region(ZTWO_PADDR(this_port[i]->private_data), sizeof(struct pia));
	360	parport_put_port(this_port[i]);
	361	}
	362	}
	363
	364
	365	MODULE_AUTHOR("Joerg Dorchain <joerg@dorchain.net>");
42b2aa86	366	MODULE_DESCRIPTION("Parport Driver for Multiface 3 expansion cards Parallel Port");
1da177e4 LT	367	MODULE_SUPPORTED_DEVICE("Multiface 3 Parallel Port");
	368	MODULE_LICENSE("GPL");
	369
	370	module_init(parport_mfc3_init)
	371	module_exit(parport_mfc3_exit)