patch-2.3.12 linux/drivers/misc/parport_mfc3.c

• Lines: 415
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.3.11/linux/drivers/misc/parport_mfc3.c
• Orig date: Thu Jun 3 16:21:47 1999

diff -u --recursive --new-file v2.3.11/linux/drivers/misc/parport_mfc3.c linux/drivers/misc/parport_mfc3.c
@@ -1,414 +0,0 @@
-/* Low-level parallel port routines for the Multiface 3 card
- *
- * Author: Joerg Dorchain <dorchain@wirbel.com>
- *
- * (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.
- */
-
-#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() {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("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 interupt 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_DIRECTION) /* XXX: What is this? */
-		;
-	if (control & PARPORT_CONTROL_INTEN) /* XXX: What is INTEN? */
-		;
-	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_INTEN | 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("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("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("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_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;
-}
-
-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 void mfc3_write_status( struct parport *p, unsigned char status)
-{
-DPRINTK("write_status %02x\n",status);
-	pia(p)->ppra = (pia(p)->ppra & 0xe0) | status_pc_to_mfc3(status);
-}
-
-static unsigned char mfc3_read_status(struct parport *p)
-{
-	unsigned char status;
-
-	status = status_mfc3_to_pc(pia(p)->ppra & 0x1f);
-DPRINTK("read_status %02x\n", status);
-	return status;
-}
-
-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*/
-}
-
-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 int mfc3_claim_resources(struct parport *p)
-{
-DPRINTK("claim_resources\n");
-}
-
-static void mfc3_init_state(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_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_inc_use_count(void)
-{
-	MOD_INC_USE_COUNT;
-}
-
-static void mfc3_dec_use_count(void)
-{
-	MOD_DEC_USE_COUNT;
-}
-
-static void mfc3_fill_inode(struct inode *inode, int fill)
-{
-#ifdef MODULE
-	if (fill)
-		MOD_INC_USE_COUNT;
-	else
-		MOD_DEC_USE_COUNT;
-#endif
-}
-
-static struct parport_operations pp_mfc3_ops = {
-	mfc3_write_data,
-	mfc3_read_data,
-
-	mfc3_write_control,
-	mfc3_read_control,
-	mfc3_frob_control,
-
-	NULL, /* write_econtrol */
-	NULL, /* read_econtrol */
-	NULL, /* frob_econtrol */
-
-	mfc3_write_status,
-	mfc3_read_status,
-
-	NULL, /* write fifo */
-	NULL, /* read fifo */
-
-	mfc3_change_mode,
-
-
-	mfc3_release_resources,
-	mfc3_claim_resources,
-
-
-	NULL, /* epp_write_data */
-	NULL, /* epp_read_data */
-	NULL, /* epp_write_addr */
-	NULL, /* epp_read_addr */
-	NULL, /* epp_check_timeout */
-
-	NULL, /* epp_write_block */
-	NULL, /* epp_read_block */
-
-	NULL, /* ecp_write_block */
-	NULL, /* ecp_read_block */
-
-	mfc3_init_state,
-	mfc3_save_state,
-	mfc3_restore_state,
-
-	mfc3_enable_irq,
-	mfc3_disable_irq,
-	mfc3_interrupt,
-
-	mfc3_inc_use_count,
-	mfc3_dec_use_count,
-	mfc3_fill_inode
-};
-
-/* ----------- Initialisation code --------------------------------- */
-
-__initfunc(int parport_mfc3_init(void))
-{
-	struct parport *p;
-	int pias = 0;
-	struct pia *pp;
-	unsigned int key = 0;
-	const struct ConfigDev *cd;
-
-	if (MACH_IS_AMIGA) {
-		while ((key = zorro_find(ZORRO_PROD_BSC_MULTIFACE_III, 0, key))) {
-			cd = zorro_get_board(key);
-			pp = (struct pia *)ZTWO_VADDR((((u_char *)cd->cd_BoardAddr)+PIABASE));
-			if (pias < MAX_MFC) {
-				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;
-				if ((p = parport_register_port((unsigned long)pp,
-					IRQ_AMIGA_PORTS, PARPORT_DMA_NONE,
-					&pp_mfc3_ops))) {
-					this_port[pias++] = p;
-					printk(KERN_INFO "%s: Multiface III port using irq\n", p->name);
-					/* XXX: set operating mode */
-					parport_proc_register(p);
-
-					if (p->irq != PARPORT_IRQ_NONE)
-						if (use_cnt++ == 0)
-							if (request_irq(IRQ_AMIGA_PORTS, mfc3_interrupt, 0, p->name, &pp_mfc3_ops))
-								use_cnt--;
-
-					if (parport_probe_hook)
-						(*parport_probe_hook)(p);
-					zorro_config_board(key, 0);
-					p->private_data = (void *)key;
-					parport_announce_port (p);
-				}
-			}
-		}
-	}
-	return pias;
-}
-
-#ifdef MODULE
-
-MODULE_AUTHOR("Joerg Dorchain");
-MODULE_DESCRIPTION("Parport Driver for Multiface 3 expansion cards Paralllel Port");
-MODULE_SUPPORTED_DEVICE("Multiface 3 Parallel Port");
-
-int init_module(void)
-{
-	return ! parport_mfc3_init();
-}
-
-void cleanup_module(void)
-{
-	int i;
-
-	for (i = 0; i < MAX_MFC; i++)
-		if (this_port[i] != NULL) {
-			if (p->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]);
-			zorro_unconfig_board((unsigned int)this_port[i]->private_data, 0);
-		}
-}
-#endif
-
-