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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [parport/] [parport_mfc3.c] - Blame information for rev 1774

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/* 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 <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;
}
 
#if 0 /* currently unused */
static unsigned char status_pc_to_mfc3(unsigned char status)
{
        unsigned char ret = 1;
 
        if (status & PARPORT_STATUS_BUSY) /* Busy */
                ret &= ~1;
        if (status & PARPORT_STATUS_ACK) /* Ack */
                ret |= 8;
        if (status & PARPORT_STATUS_PAPEROUT) /* PaperOut */
                ret |= 2;
        if (status & PARPORT_STATUS_SELECT) /* select */
                ret |= 4;
        if (status & PARPORT_STATUS_ERROR) /* error */
                ret |= 16;
        return ret;
}
#endif
 
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;
}
 
#if 0 /* currently unused */
static void mfc3_write_status( struct parport *p, unsigned char status)
{
DPRINTK(KERN_DEBUG "write_status %02x\n",status);
        pia(p)->ppra = (pia(p)->ppra & 0xe0) | status_pc_to_mfc3(status);
}
#endif
 
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;
}
 
#if 0 /* currently unused */
static void mfc3_change_mode( struct parport *p, int m)
{
        /* XXX: This port only has one mode, and I am
        not sure about the corresponding PC-style mode*/
}
#endif
 
static int use_cnt = 0;
 
static void mfc3_interrupt(int irq, void *dev_id, struct pt_regs *regs)
{
        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(irq, this_port[i], regs);
                        }
}
 
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 void mfc3_inc_use_count(void)
{
        MOD_INC_USE_COUNT;
}
 
static void mfc3_dec_use_count(void)
{
        MOD_DEC_USE_COUNT;
}
 
static struct parport_operations pp_mfc3_ops = {
        mfc3_write_data,
        mfc3_read_data,
 
        mfc3_write_control,
        mfc3_read_control,
        mfc3_frob_control,
 
        mfc3_read_status,
 
        mfc3_enable_irq,
        mfc3_disable_irq,
 
        mfc3_data_forward,
        mfc3_data_reverse,
 
        mfc3_init_state,
        mfc3_save_state,
        mfc3_restore_state,
 
        mfc3_inc_use_count,
        mfc3_dec_use_count,
 
        parport_ieee1284_epp_write_data,
        parport_ieee1284_epp_read_data,
        parport_ieee1284_epp_write_addr,
        parport_ieee1284_epp_read_addr,
 
        parport_ieee1284_ecp_write_data,
        parport_ieee1284_ecp_read_data,
        parport_ieee1284_ecp_write_addr,
 
        parport_ieee1284_write_compat,
        parport_ieee1284_read_nibble,
        parport_ieee1284_read_byte,
};
 
/* ----------- Initialisation code --------------------------------- */
 
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, SA_SHIRQ, p->name, &pp_mfc3_ops))
                                        goto out_irq;
                }
 
                this_port[pias++] = p;
                printk(KERN_INFO "%s: Multiface III port using irq\n", p->name);
                /* XXX: set operating mode */
                parport_proc_register(p);
 
                p->private_data = (void *)piabase;
                parport_announce_port (p);
 
                if (pias >= MAX_MFC)
                        break;
                continue;
 
        out_irq:
                parport_unregister_port(p);
        out_port:
                release_mem_region(piabase, sizeof(struct pia));
        }
 
        return pias ? 0 : -ENODEV;
}
 
void __exit parport_mfc3_exit(void)
{
        int i;
 
        for (i = 0; i < MAX_MFC; i++) {
                if (!this_port[i])
                        continue;
                if (!this_port[i]->irq != PARPORT_IRQ_NONE) {
                        if (--use_cnt == 0)
                                free_irq(IRQ_AMIGA_PORTS, &pp_mfc3_ops);
                }
                parport_proc_unregister(this_port[i]);
                parport_unregister_port(this_port[i]);
                release_mem_region(ZTWO_PADDR(this_port[i]->private_data), sizeof(struct pia));
        }
}
 
 
MODULE_AUTHOR("Joerg Dorchain <joerg@dorchain.net>");
MODULE_DESCRIPTION("Parport Driver for Multiface 3 expansion cards Paralllel Port");
MODULE_SUPPORTED_DEVICE("Multiface 3 Parallel Port");
MODULE_LICENSE("GPL");
 
module_init(parport_mfc3_init)
module_exit(parport_mfc3_exit)
 

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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [drivers/] [parport/] [parport_mfc3.c] - Blame information for rev 1774

Line No.	Rev	Author	Line
1	1275	phoenix	`/* 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 <asm/setup.h>`
63			`#include <asm/amigahw.h>`
64			`#include <asm/irq.h>`
65			`#include <asm/amigaints.h>`
66
67			`/* Maximum Number of Cards supported */`
68			`#define MAX_MFC 5`
69
70			`#undef DEBUG`
71			`#ifdef DEBUG`
72			`#define DPRINTK printk`
73			`#else`
74			`static inline int DPRINTK(void *nothing, ...) {return 0;}`
75			`#endif`
76
77			`static struct parport *this_port[MAX_MFC] = {NULL, };`
78			`static volatile int dummy; /* for trigger readds */`
79
80			`#define pia(dev) ((struct pia *)(dev->base))`
81			`static struct parport_operations pp_mfc3_ops;`
82
83			`static void mfc3_write_data(struct parport *p, unsigned char data)`
84			`{`
85			`DPRINTK(KERN_DEBUG "write_data %c\n",data);`
86
87			`dummy = pia(p)->pprb; /* clears irq bit */`
88			`/* Triggers also /STROBE.*/`
89			`pia(p)->pprb = data;`
90			`}`
91
92			`static unsigned char mfc3_read_data(struct parport *p)`
93			`{`
94			`/* clears interrupt bit. Triggers also /STROBE. */`
95			`return pia(p)->pprb;`
96			`}`
97
98			`static unsigned char control_pc_to_mfc3(unsigned char control)`
99			`{`
100			`unsigned char ret = 32\|64;`
101
102			`if (control & PARPORT_CONTROL_SELECT) /* XXX: What is SELECP? */`
103			`ret &= ~32; /* /SELECT_IN */`
104			`if (control & PARPORT_CONTROL_INIT) /* INITP */`
105			`ret \|= 128;`
106			`if (control & PARPORT_CONTROL_AUTOFD) /* AUTOLF */`
107			`ret &= ~64;`
108			`if (control & PARPORT_CONTROL_STROBE) /* Strobe */`
109			`/* Handled directly by hardware */;`
110			`return ret;`
111			`}`
112
113			`static unsigned char control_mfc3_to_pc(unsigned char control)`
114			`{`
115			`unsigned char ret = PARPORT_CONTROL_STROBE`
116			`\| PARPORT_CONTROL_AUTOFD \| PARPORT_CONTROL_SELECT;`
117
118			`if (control & 128) /* /INITP */`
119			`ret \|= PARPORT_CONTROL_INIT;`
120			`if (control & 64) /* /AUTOLF */`
121			`ret &= ~PARPORT_CONTROL_AUTOFD;`
122			`if (control & 32) /* /SELECT_IN */`
123			`ret &= ~PARPORT_CONTROL_SELECT;`
124			`return ret;`
125			`}`
126
127			`static void mfc3_write_control(struct parport *p, unsigned char control)`
128			`{`
129			`DPRINTK(KERN_DEBUG "write_control %02x\n",control);`
130			`pia(p)->ppra = (pia(p)->ppra & 0x1f) \| control_pc_to_mfc3(control);`
131			`}`
132
133			`static unsigned char mfc3_read_control( struct parport *p)`
134			`{`
135			`DPRINTK(KERN_DEBUG "read_control \n");`
136			`return control_mfc3_to_pc(pia(p)->ppra & 0xe0);`
137			`}`
138
139			`static unsigned char mfc3_frob_control( struct parport *p, unsigned char mask, unsigned char val)`
140			`{`
141			`unsigned char old;`
142
143			`DPRINTK(KERN_DEBUG "frob_control mask %02x, value %02x\n",mask,val);`
144			`old = mfc3_read_control(p);`
145			`mfc3_write_control(p, (old & ~mask) ^ val);`
146			`return old;`
147			`}`
148
149			`#if 0 /* currently unused */`
150			`static unsigned char status_pc_to_mfc3(unsigned char status)`
151			`{`
152			`unsigned char ret = 1;`
153
154			`if (status & PARPORT_STATUS_BUSY) /* Busy */`
155			`ret &= ~1;`
156			`if (status & PARPORT_STATUS_ACK) /* Ack */`
157			`ret \|= 8;`
158			`if (status & PARPORT_STATUS_PAPEROUT) /* PaperOut */`
159			`ret \|= 2;`
160			`if (status & PARPORT_STATUS_SELECT) /* select */`
161			`ret \|= 4;`
162			`if (status & PARPORT_STATUS_ERROR) /* error */`
163			`ret \|= 16;`
164			`return ret;`
165			`}`
166			`#endif`
167
168			`static unsigned char status_mfc3_to_pc(unsigned char status)`
169			`{`
170			`unsigned char ret = PARPORT_STATUS_BUSY;`
171
172			`if (status & 1) /* Busy */`
173			`ret &= ~PARPORT_STATUS_BUSY;`
174			`if (status & 2) /* PaperOut */`
175			`ret \|= PARPORT_STATUS_PAPEROUT;`
176			`if (status & 4) /* Selected */`
177			`ret \|= PARPORT_STATUS_SELECT;`
178			`if (status & 8) /* Ack */`
179			`ret \|= PARPORT_STATUS_ACK;`
180			`if (status & 16) /* /ERROR */`
181			`ret \|= PARPORT_STATUS_ERROR;`
182
183			`return ret;`
184			`}`
185
186			`#if 0 /* currently unused */`
187			`static void mfc3_write_status( struct parport *p, unsigned char status)`
188			`{`
189			`DPRINTK(KERN_DEBUG "write_status %02x\n",status);`
190			`pia(p)->ppra = (pia(p)->ppra & 0xe0) \| status_pc_to_mfc3(status);`
191			`}`
192			`#endif`
193
194			`static unsigned char mfc3_read_status(struct parport *p)`
195			`{`
196			`unsigned char status;`
197
198			`status = status_mfc3_to_pc(pia(p)->ppra & 0x1f);`
199			`DPRINTK(KERN_DEBUG "read_status %02x\n", status);`
200			`return status;`
201			`}`
202
203			`#if 0 /* currently unused */`
204			`static void mfc3_change_mode( struct parport *p, int m)`
205			`{`
206			`/* XXX: This port only has one mode, and I am`
207			`not sure about the corresponding PC-style mode*/`
208			`}`
209			`#endif`
210
211			`static int use_cnt = 0;`
212
213			`static void mfc3_interrupt(int irq, void dev_id, struct pt_regs regs)`
214			`{`
215			`int i;`
216
217			`for( i = 0; i < MAX_MFC; i++)`
218			`if (this_port[i] != NULL)`
219			`if (pia(this_port[i])->crb & 128) { /* Board caused interrupt */`
220			`dummy = pia(this_port[i])->pprb; /* clear irq bit */`
221			`parport_generic_irq(irq, this_port[i], regs);`
222			`}`
223			`}`
224
225			`static void mfc3_enable_irq(struct parport *p)`
226			`{`
227			`pia(p)->crb \|= PIA_C1_ENABLE_IRQ;`
228			`}`
229
230			`static void mfc3_disable_irq(struct parport *p)`
231			`{`
232			`pia(p)->crb &= ~PIA_C1_ENABLE_IRQ;`
233			`}`
234
235			`static void mfc3_data_forward(struct parport *p)`
236			`{`
237			`DPRINTK(KERN_DEBUG "forward\n");`
238			`pia(p)->crb &= ~PIA_DDR; /* make data direction register visible */`
239			`pia(p)->pddrb = 255; /* all pins output */`
240			`pia(p)->crb \|= PIA_DDR; /* make data register visible - default */`
241			`}`
242
243			`static void mfc3_data_reverse(struct parport *p)`
244			`{`
245			`DPRINTK(KERN_DEBUG "reverse\n");`
246			`pia(p)->crb &= ~PIA_DDR; /* make data direction register visible */`
247			`pia(p)->pddrb = 0; /* all pins input */`
248			`pia(p)->crb \|= PIA_DDR; /* make data register visible - default */`
249			`}`
250
251			`static void mfc3_init_state(struct pardevice dev, struct parport_state s)`
252			`{`
253			`s->u.amiga.data = 0;`
254			`s->u.amiga.datadir = 255;`
255			`s->u.amiga.status = 0;`
256			`s->u.amiga.statusdir = 0xe0;`
257			`}`
258
259			`static void mfc3_save_state(struct parport p, struct parport_state s)`
260			`{`
261			`s->u.amiga.data = pia(p)->pprb;`
262			`pia(p)->crb &= ~PIA_DDR;`
263			`s->u.amiga.datadir = pia(p)->pddrb;`
264			`pia(p)->crb \|= PIA_DDR;`
265			`s->u.amiga.status = pia(p)->ppra;`
266			`pia(p)->cra &= ~PIA_DDR;`
267			`s->u.amiga.statusdir = pia(p)->pddrb;`
268			`pia(p)->cra \|= PIA_DDR;`
269			`}`
270
271			`static void mfc3_restore_state(struct parport p, struct parport_state s)`
272			`{`
273			`pia(p)->pprb = s->u.amiga.data;`
274			`pia(p)->crb &= ~PIA_DDR;`
275			`pia(p)->pddrb = s->u.amiga.datadir;`
276			`pia(p)->crb \|= PIA_DDR;`
277			`pia(p)->ppra = s->u.amiga.status;`
278			`pia(p)->cra &= ~PIA_DDR;`
279			`pia(p)->pddrb = s->u.amiga.statusdir;`
280			`pia(p)->cra \|= PIA_DDR;`
281			`}`
282
283			`static void mfc3_inc_use_count(void)`
284			`{`
285			`MOD_INC_USE_COUNT;`
286			`}`
287
288			`static void mfc3_dec_use_count(void)`
289			`{`
290			`MOD_DEC_USE_COUNT;`
291			`}`
292
293			`static struct parport_operations pp_mfc3_ops = {`
294			`mfc3_write_data,`
295			`mfc3_read_data,`
296
297			`mfc3_write_control,`
298			`mfc3_read_control,`
299			`mfc3_frob_control,`
300
301			`mfc3_read_status,`
302
303			`mfc3_enable_irq,`
304			`mfc3_disable_irq,`
305
306			`mfc3_data_forward,`
307			`mfc3_data_reverse,`
308
309			`mfc3_init_state,`
310			`mfc3_save_state,`
311			`mfc3_restore_state,`
312
313			`mfc3_inc_use_count,`
314			`mfc3_dec_use_count,`
315
316			`parport_ieee1284_epp_write_data,`
317			`parport_ieee1284_epp_read_data,`
318			`parport_ieee1284_epp_write_addr,`
319			`parport_ieee1284_epp_read_addr,`
320
321			`parport_ieee1284_ecp_write_data,`
322			`parport_ieee1284_ecp_read_data,`
323			`parport_ieee1284_ecp_write_addr,`
324
325			`parport_ieee1284_write_compat,`
326			`parport_ieee1284_read_nibble,`
327			`parport_ieee1284_read_byte,`
328			`};`
329
330			`/* ----------- Initialisation code --------------------------------- */`
331
332			`int __init parport_mfc3_init(void)`
333			`{`
334			`struct parport *p;`
335			`int pias = 0;`
336			`struct pia *pp;`
337			`struct zorro_dev *z = NULL;`
338
339			`if (!MACH_IS_AMIGA)`
340			`return -ENODEV;`
341
342			`while ((z = zorro_find_device(ZORRO_PROD_BSC_MULTIFACE_III, z))) {`
343			`unsigned long piabase = z->resource.start+PIABASE;`
344			`if (!request_mem_region(piabase, sizeof(struct pia), "PIA"))`
345			`continue;`
346
347			`pp = (struct pia *)ZTWO_VADDR(piabase);`
348			`pp->crb = 0;`
349			`pp->pddrb = 255; /* all data pins output */`
350			`pp->crb = PIA_DDR\|32\|8;`
351			`dummy = pp->pddrb; /* reading clears interrupt */`
352			`pp->cra = 0;`
353			`pp->pddra = 0xe0; /* /RESET, /DIR ,/AUTO-FEED output */`
354			`pp->cra = PIA_DDR;`
355			`pp->ppra = 0; /* reset printer */`
356			`udelay(10);`
357			`pp->ppra = 128;`
358			`p = parport_register_port((unsigned long)pp, IRQ_AMIGA_PORTS,`
359			`PARPORT_DMA_NONE, &pp_mfc3_ops);`
360			`if (!p)`
361			`goto out_port;`
362
363			`if (p->irq != PARPORT_IRQ_NONE) {`
364			`if (use_cnt++ == 0)`
365			`if (request_irq(IRQ_AMIGA_PORTS, mfc3_interrupt, SA_SHIRQ, p->name, &pp_mfc3_ops))`
366			`goto out_irq;`
367			`}`
368
369			`this_port[pias++] = p;`
370			`printk(KERN_INFO "%s: Multiface III port using irq\n", p->name);`
371			`/* XXX: set operating mode */`
372			`parport_proc_register(p);`
373
374			`p->private_data = (void *)piabase;`
375			`parport_announce_port (p);`
376
377			`if (pias >= MAX_MFC)`
378			`break;`
379			`continue;`
380
381			`out_irq:`
382			`parport_unregister_port(p);`
383			`out_port:`
384			`release_mem_region(piabase, sizeof(struct pia));`
385			`}`
386
387			`return pias ? 0 : -ENODEV;`
388			`}`
389
390			`void __exit parport_mfc3_exit(void)`
391			`{`
392			`int i;`
393
394			`for (i = 0; i < MAX_MFC; i++) {`
395			`if (!this_port[i])`
396			`continue;`
397			`if (!this_port[i]->irq != PARPORT_IRQ_NONE) {`
398			`if (--use_cnt == 0)`
399			`free_irq(IRQ_AMIGA_PORTS, &pp_mfc3_ops);`
400			`}`
401			`parport_proc_unregister(this_port[i]);`
402			`parport_unregister_port(this_port[i]);`
403			`release_mem_region(ZTWO_PADDR(this_port[i]->private_data), sizeof(struct pia));`
404			`}`
405			`}`
406
407
408			`MODULE_AUTHOR("Joerg Dorchain <joerg@dorchain.net>");`
409			`MODULE_DESCRIPTION("Parport Driver for Multiface 3 expansion cards Paralllel Port");`
410			`MODULE_SUPPORTED_DEVICE("Multiface 3 Parallel Port");`
411			`MODULE_LICENSE("GPL");`
412
413			`module_init(parport_mfc3_init)`
414			`module_exit(parport_mfc3_exit)`
415