[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / parport / parport_mfc3.c

/* 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 = 0;

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 = (struct pia *)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
1da177e4 LT	1	/* Low-level parallel port routines for the Multiface 3 card
	2	*
	3	* Author: Joerg Dorchain <joerg@dorchain.net>
	4	*
	5	* (C) The elitist m68k Users(TM)
	6	*
	7	* based on the existing parport_amiga and lp_mfc
	8	*
	9	*
	10	* From the MFC3 documentation:
	11	*
	12	* Miscellaneous PIA Details
	13	* -------------------------
	14	*
	15	* The two open-drain interrupt outputs /IRQA and /IRQB are routed to
	16	* /INT2 of the Z2 bus.
	17	*
	18	* The CPU data bus of the PIA (D0-D7) is connected to D8-D15 on the Z2
	19	* bus. This means that any PIA registers are accessed at even addresses.
	20	*
	21	* Centronics Pin Connections for the PIA
	22	* --------------------------------------
	23	*
	24	* The following table shows the connections between the PIA and the
	25	* Centronics interface connector. These connections implement a single, but
	26	* very complete, Centronics type interface. The Pin column gives the pin
	27	* numbers of the PIA. The Centronics pin numbers can be found in the section
	28	* "Parallel Connectors".
	29	*
	30	*
	31	* Pin \| PIA \| Dir \| Centronics Names
	32	* -------+-----+-----+---------------------------------------------------------
	33	* 19 \| CB2 \| --> \| /STROBE (aka /DRDY)
	34	* 10-17 \| PBx \| <-> \| DATA0 - DATA7
	35	* 18 \| CB1 \| <-- \| /ACK
	36	* 40 \| CA1 \| <-- \| BUSY
	37	* 3 \| PA1 \| <-- \| PAPER-OUT (aka POUT)
	38	* 4 \| PA2 \| <-- \| SELECTED (aka SEL)
	39	* 9 \| PA7 \| --> \| /INIT (aka /RESET or /INPUT-PRIME)
	40	* 6 \| PA4 \| <-- \| /ERROR (aka /FAULT)
	41	* 7 \| PA5 \| --> \| DIR (aka /SELECT-IN)
	42	* 8 \| PA6 \| --> \| /AUTO-FEED-XT
	43	* 39 \| CA2 \| --> \| open
	44	* 5 \| PA3 \| <-- \| /ACK (same as CB1!)
	45	* 2 \| PA0 \| <-- \| BUSY (same as CA1!)
	46	* -------+-----+-----+---------------------------------------------------------
	47	*
	48	* Should be enough to understand some of the driver.
	49	*
	50	* Per convention for normal use the port registers are visible.
	51	* If you need the data direction registers, restore the value in the
	52	* control register.
	53	*/
	54
	55	#include "multiface.h"
	56	#include <linux/module.h>
	57	#include <linux/init.h>
	58	#include <linux/parport.h>
	59	#include <linux/delay.h>
	60	#include <linux/mc6821.h>
	61	#include <linux/zorro.h>
	62	#include <linux/interrupt.h>
	63	#include <asm/setup.h>
	64	#include <asm/amigahw.h>
65	#include <asm/irq.h>
66	#include <asm/amigaints.h>
67
68	/* Maximum Number of Cards supported */
69	#define MAX_MFC 5
70
71	#undef DEBUG
72	#ifdef DEBUG
73	#define DPRINTK printk
74	#else
75	static inline int DPRINTK(void *nothing, ...) {return 0;}
76	#endif
77
78	static struct parport *this_port[MAX_MFC] = {NULL, };
79	static volatile int dummy; /* for trigger readds */
80
81	#define pia(dev) ((struct pia *)(dev->base))
82	static struct parport_operations pp_mfc3_ops;
83
84	static void mfc3_write_data(struct parport *p, unsigned char data)
85	{
86	DPRINTK(KERN_DEBUG "write_data %c\n",data);
87
88	dummy = pia(p)->pprb; /* clears irq bit */
89	/* Triggers also /STROBE.*/
90	pia(p)->pprb = data;
91	}
92
93	static unsigned char mfc3_read_data(struct parport *p)
94	{
95	/* clears interrupt bit. Triggers also /STROBE. */
96	return pia(p)->pprb;
97	}
98
99	static unsigned char control_pc_to_mfc3(unsigned char control)
100	{
101	unsigned char ret = 32\|64;
102
103	if (control & PARPORT_CONTROL_SELECT) /* XXX: What is SELECP? */
104	ret &= ~32; /* /SELECT_IN */
105	if (control & PARPORT_CONTROL_INIT) /* INITP */
106	ret \|= 128;
107	if (control & PARPORT_CONTROL_AUTOFD) /* AUTOLF */
108	ret &= ~64;
109	if (control & PARPORT_CONTROL_STROBE) /* Strobe */
110	/* Handled directly by hardware */;
111	return ret;
112	}
113
114	static unsigned char control_mfc3_to_pc(unsigned char control)
115	{
116	unsigned char ret = PARPORT_CONTROL_STROBE
117	\| PARPORT_CONTROL_AUTOFD \| PARPORT_CONTROL_SELECT;
118
119	if (control & 128) /* /INITP */
120	ret \|= PARPORT_CONTROL_INIT;
121	if (control & 64) /* /AUTOLF */
122	ret &= ~PARPORT_CONTROL_AUTOFD;
123	if (control & 32) /* /SELECT_IN */
124	ret &= ~PARPORT_CONTROL_SELECT;
125	return ret;
126	}
127
128	static void mfc3_write_control(struct parport *p, unsigned char control)
129	{
130	DPRINTK(KERN_DEBUG "write_control %02x\n",control);
131	pia(p)->ppra = (pia(p)->ppra & 0x1f) \| control_pc_to_mfc3(control);
132	}
133
134	static unsigned char mfc3_read_control( struct parport *p)
135	{
136	DPRINTK(KERN_DEBUG "read_control \n");
137	return control_mfc3_to_pc(pia(p)->ppra & 0xe0);
138	}
139
140	static unsigned char mfc3_frob_control( struct parport *p, unsigned char mask, unsigned char val)
141	{
142	unsigned char old;
143
144	DPRINTK(KERN_DEBUG "frob_control mask %02x, value %02x\n",mask,val);
145	old = mfc3_read_control(p);
146	mfc3_write_control(p, (old & ~mask) ^ val);
147	return old;
148	}
149
1da177e4 LT	150	static unsigned char status_mfc3_to_pc(unsigned char status)
	151	{
	152	unsigned char ret = PARPORT_STATUS_BUSY;
	153
	154	if (status & 1) /* Busy */
	155	ret &= ~PARPORT_STATUS_BUSY;
	156	if (status & 2) /* PaperOut */
	157	ret \|= PARPORT_STATUS_PAPEROUT;
	158	if (status & 4) /* Selected */
	159	ret \|= PARPORT_STATUS_SELECT;
	160	if (status & 8) /* Ack */
	161	ret \|= PARPORT_STATUS_ACK;
	162	if (status & 16) /* /ERROR */
	163	ret \|= PARPORT_STATUS_ERROR;
	164
	165	return ret;
	166	}
	167
1da177e4 LT	168	static unsigned char mfc3_read_status(struct parport *p)
	169	{
	170	unsigned char status;
	171
	172	status = status_mfc3_to_pc(pia(p)->ppra & 0x1f);
	173	DPRINTK(KERN_DEBUG "read_status %02x\n", status);
	174	return status;
	175	}
	176
1da177e4 LT	177	static int use_cnt = 0;
1da177e4 LT	178
7d12e780	179	static irqreturn_t mfc3_interrupt(int irq, void *dev_id)
1da177e4 LT	180	{
	181	int i;
	182
	183	for( i = 0; i < MAX_MFC; i++)
	184	if (this_port[i] != NULL)
	185	if (pia(this_port[i])->crb & 128) { /* Board caused interrupt */
	186	dummy = pia(this_port[i])->pprb; /* clear irq bit */
f230d101	187	parport_generic_irq(this_port[i]);
1da177e4 LT	188	}
	189	return IRQ_HANDLED;
	190	}
	191
	192	static void mfc3_enable_irq(struct parport *p)
	193	{
	194	pia(p)->crb \|= PIA_C1_ENABLE_IRQ;
	195	}
	196
	197	static void mfc3_disable_irq(struct parport *p)
	198	{
	199	pia(p)->crb &= ~PIA_C1_ENABLE_IRQ;
	200	}
	201
	202	static void mfc3_data_forward(struct parport *p)
	203	{
	204	DPRINTK(KERN_DEBUG "forward\n");
	205	pia(p)->crb &= ~PIA_DDR; /* make data direction register visible */
	206	pia(p)->pddrb = 255; /* all pins output */
	207	pia(p)->crb \|= PIA_DDR; /* make data register visible - default */
	208	}
	209
	210	static void mfc3_data_reverse(struct parport *p)
	211	{
	212	DPRINTK(KERN_DEBUG "reverse\n");
	213	pia(p)->crb &= ~PIA_DDR; /* make data direction register visible */
	214	pia(p)->pddrb = 0; /* all pins input */
	215	pia(p)->crb \|= PIA_DDR; /* make data register visible - default */
	216	}
	217
	218	static void mfc3_init_state(struct pardevice dev, struct parport_state s)
	219	{
	220	s->u.amiga.data = 0;
	221	s->u.amiga.datadir = 255;
	222	s->u.amiga.status = 0;
	223	s->u.amiga.statusdir = 0xe0;
	224	}
	225
	226	static void mfc3_save_state(struct parport p, struct parport_state s)
	227	{
	228	s->u.amiga.data = pia(p)->pprb;
	229	pia(p)->crb &= ~PIA_DDR;
	230	s->u.amiga.datadir = pia(p)->pddrb;
	231	pia(p)->crb \|= PIA_DDR;
	232	s->u.amiga.status = pia(p)->ppra;
	233	pia(p)->cra &= ~PIA_DDR;
	234	s->u.amiga.statusdir = pia(p)->pddrb;
	235	pia(p)->cra \|= PIA_DDR;
	236	}
	237
	238	static void mfc3_restore_state(struct parport p, struct parport_state s)
	239	{
	240	pia(p)->pprb = s->u.amiga.data;
	241	pia(p)->crb &= ~PIA_DDR;
	242	pia(p)->pddrb = s->u.amiga.datadir;
	243	pia(p)->crb \|= PIA_DDR;
	244	pia(p)->ppra = s->u.amiga.status;
	245	pia(p)->cra &= ~PIA_DDR;
	246	pia(p)->pddrb = s->u.amiga.statusdir;
	247	pia(p)->cra \|= PIA_DDR;
	248	}
	249
	250	static struct parport_operations pp_mfc3_ops = {
	251	.write_data = mfc3_write_data,
252	.read_data = mfc3_read_data,
253
254	.write_control = mfc3_write_control,
255	.read_control = mfc3_read_control,
256	.frob_control = mfc3_frob_control,
257
258	.read_status = mfc3_read_status,
259
260	.enable_irq = mfc3_enable_irq,
261	.disable_irq = mfc3_disable_irq,
262
263	.data_forward = mfc3_data_forward,
264	.data_reverse = mfc3_data_reverse,
265
266	.init_state = mfc3_init_state,
267	.save_state = mfc3_save_state,
268	.restore_state = mfc3_restore_state,
269
270	.epp_write_data = parport_ieee1284_epp_write_data,
271	.epp_read_data = parport_ieee1284_epp_read_data,
272	.epp_write_addr = parport_ieee1284_epp_write_addr,
273	.epp_read_addr = parport_ieee1284_epp_read_addr,
274
275	.ecp_write_data = parport_ieee1284_ecp_write_data,
276	.ecp_read_data = parport_ieee1284_ecp_read_data,
277	.ecp_write_addr = parport_ieee1284_ecp_write_addr,
278
279	.compat_write_data = parport_ieee1284_write_compat,
280	.nibble_read_data = parport_ieee1284_read_nibble,
281	.byte_read_data = parport_ieee1284_read_byte,
282
283	.owner = THIS_MODULE,
284	};
285
286	/* ----------- Initialisation code --------------------------------- */
287
288	static int __init parport_mfc3_init(void)
289	{
290	struct parport *p;
291	int pias = 0;
292	struct pia *pp;
293	struct zorro_dev *z = NULL;
294
295	if (!MACH_IS_AMIGA)
296	return -ENODEV;
297
298	while ((z = zorro_find_device(ZORRO_PROD_BSC_MULTIFACE_III, z))) {
299	unsigned long piabase = z->resource.start+PIABASE;
300	if (!request_mem_region(piabase, sizeof(struct pia), "PIA"))
301	continue;
302
303	pp = (struct pia *)ZTWO_VADDR(piabase);
304	pp->crb = 0;
305	pp->pddrb = 255; /* all data pins output */
306	pp->crb = PIA_DDR\|32\|8;
307	dummy = pp->pddrb; /* reading clears interrupt */
308	pp->cra = 0;
309	pp->pddra = 0xe0; /* /RESET, /DIR ,/AUTO-FEED output */
310	pp->cra = PIA_DDR;
311	pp->ppra = 0; /* reset printer */
312	udelay(10);
313	pp->ppra = 128;
314	p = parport_register_port((unsigned long)pp, IRQ_AMIGA_PORTS,
315	PARPORT_DMA_NONE, &pp_mfc3_ops);
316	if (!p)
317	goto out_port;
318
319	if (p->irq != PARPORT_IRQ_NONE) {
320	if (use_cnt++ == 0)
dace1453	321	if (request_irq(IRQ_AMIGA_PORTS, mfc3_interrupt, IRQF_SHARED, p->name, &pp_mfc3_ops))
1da177e4 LT	322	goto out_irq;
1da177e4 LT	323	}
c15a3837	324	p->dev = &z->dev;
1da177e4 LT	325
	326	this_port[pias++] = p;
	327	printk(KERN_INFO "%s: Multiface III port using irq\n", p->name);
	328	/* XXX: set operating mode */
	329
	330	p->private_data = (void *)piabase;
	331	parport_announce_port (p);
	332
	333	if (pias >= MAX_MFC)
	334	break;
	335	continue;
	336
	337	out_irq:
	338	parport_put_port(p);
	339	out_port:
	340	release_mem_region(piabase, sizeof(struct pia));
	341	}
	342
	343	return pias ? 0 : -ENODEV;
	344	}
	345
	346	static void __exit parport_mfc3_exit(void)
	347	{
	348	int i;
	349
	350	for (i = 0; i < MAX_MFC; i++) {
	351	if (!this_port[i])
	352	continue;
	353	parport_remove_port(this_port[i]);
49966bae	354	if (this_port[i]->irq != PARPORT_IRQ_NONE) {
1da177e4 LT	355	if (--use_cnt == 0)
	356	free_irq(IRQ_AMIGA_PORTS, &pp_mfc3_ops);
	357	}
	358	release_mem_region(ZTWO_PADDR(this_port[i]->private_data), sizeof(struct pia));
	359	parport_put_port(this_port[i]);
	360	}
	361	}
	362
	363
	364	MODULE_AUTHOR("Joerg Dorchain <joerg@dorchain.net>");
42b2aa86	365	MODULE_DESCRIPTION("Parport Driver for Multiface 3 expansion cards Parallel Port");
1da177e4 LT	366	MODULE_SUPPORTED_DEVICE("Multiface 3 Parallel Port");
	367	MODULE_LICENSE("GPL");
	368
	369	module_init(parport_mfc3_init)
	370	module_exit(parport_mfc3_exit)