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

• Lines: 252
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.3.11/linux/drivers/misc/parport_atari.c
• Orig date: Thu Jul 8 15:42:20 1999

diff -u --recursive --new-file v2.3.11/linux/drivers/misc/parport_atari.c linux/drivers/misc/parport_atari.c
@@ -1,251 +0,0 @@
-/* Low-level parallel port routines for the Atari builtin port
- *
- * Author: Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
- *
- * Based on parport_amiga.c.
- *
- * The built-in Atari parallel port provides one port at a fixed address
- * with 8 output data lines (D0 - D7), 1 output control line (STROBE)
- * and 1 input status line (BUSY) able to cause an interrupt.
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/parport.h>
-#include <asm/setup.h>
-#include <asm/atarihw.h>
-#include <asm/irq.h>
-#include <asm/atariints.h>
-
-static struct parport *this_port = NULL;
-
-static unsigned char
-parport_atari_read_data(struct parport *p)
-{
-	unsigned long flags;
-	unsigned char data;
-
-	save_flags(flags);
-	cli();
-	sound_ym.rd_data_reg_sel = 15;
-	data = sound_ym.rd_data_reg_sel;
-	restore_flags(flags);
-	return data;
-}
-
-static void
-parport_atari_write_data(struct parport *p, unsigned char data)
-{
-	unsigned long flags;
-
-	save_flags(flags);
-	cli();
-	sound_ym.rd_data_reg_sel = 15;
-	sound_ym.wd_data = data;
-	restore_flags(flags);
-}
-
-static unsigned char
-parport_atari_read_control(struct parport *p)
-{
-	unsigned long flags;
-	unsigned char control = 0;
-
-	save_flags(flags);
-	cli();
-	sound_ym.rd_data_reg_sel = 14;
-	if (!(sound_ym.rd_data_reg_sel & (1 << 5)))
-		control = PARPORT_CONTROL_STROBE;
-	restore_flags(flags);
-	return control;
-}
-
-static void
-parport_atari_write_control(struct parport *p, unsigned char control)
-{
-	unsigned long flags;
-
-	save_flags(flags);
-	cli();
-	sound_ym.rd_data_reg_sel = 14;
-	if (control & PARPORT_CONTROL_STROBE)
-		sound_ym.wd_data = sound_ym.rd_data_reg_sel & ~(1 << 5);
-	else
-		sound_ym.wd_data = sound_ym.rd_data_reg_sel | (1 << 5);
-	restore_flags(flags);
-}
-
-static unsigned char
-parport_atari_frob_control(struct parport *p, unsigned char mask,
-			   unsigned char val)
-{
-	unsigned char old = parport_atari_read_control(p);
-	parport_atari_write_control(p, (old & ~mask) ^ val);
-	return old;
-}
-
-static unsigned char
-parport_atari_read_status(struct parport *p)
-{
-	return ((mfp.par_dt_reg & 1 ? 0 : PARPORT_STATUS_BUSY) |
-		PARPORT_STATUS_SELECT | PARPORT_STATUS_ERROR);
-}
-
-static void
-parport_atari_write_status(struct parport *p, unsigned char status)
-{
-}
-
-static void
-parport_atari_init_state(struct parport_state *s)
-{
-}
-
-static void
-parport_atari_save_state(struct parport *p, struct parport_state *s)
-{
-}
-
-static void
-parport_atari_restore_state(struct parport *p, struct parport_state *s)
-{
-}
-
-static void
-parport_atari_interrupt(int irq, void *dev_id, struct pt_regs *regs)
-{
-	parport_generic_irq(irq, (struct parport *) dev_id, regs);
-}
-
-static void
-parport_atari_inc_use_count(void)
-{
-	MOD_INC_USE_COUNT;
-}
-
-static void
-parport_atari_dec_use_count(void)
-{
-	MOD_DEC_USE_COUNT;
-}
-
-static void
-parport_atari_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 parport_atari_ops = {
-	parport_atari_write_data,
-	parport_atari_read_data,
-
-	parport_atari_write_control,
-	parport_atari_read_control,
-	parport_atari_frob_control,
-
-	NULL, /* write_econtrol */
-	NULL, /* read_econtrol */
-	NULL, /* frob_econtrol */
-
-	parport_atari_write_status,
-	parport_atari_read_status,
-
-	NULL, /* write fifo */
-	NULL, /* read fifo */
-
-	NULL, /* change_mode */
-
-	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 */
-
-	parport_atari_init_state,
-	parport_atari_save_state,
-	parport_atari_restore_state,
-
-	NULL, /* enable_irq */
-	NULL, /* disable_irq */
-	parport_atari_interrupt,
-
-	parport_atari_inc_use_count,
-	parport_atari_dec_use_count,
-	parport_atari_fill_inode
-};
-
-
-int __init
-parport_atari_init(void)
-{
-	struct parport *p;
-	unsigned long flags;
-
-	if (MACH_IS_ATARI) {
-		save_flags(flags);
-		cli();
-		/* Soundchip port A/B as output. */
-		sound_ym.rd_data_reg_sel = 7;
-		sound_ym.wd_data = (sound_ym.rd_data_reg_sel & 0x3f) | 0xc0;
-		/* STROBE high. */
-		sound_ym.rd_data_reg_sel = 14;
-		sound_ym.wd_data = sound_ym.rd_data_reg_sel | (1 << 5);
-		restore_flags(flags);
-		/* MFP port I0 as input. */
-		mfp.data_dir &= ~1;
-		/* MFP port I0 interrupt on high->low edge. */
-		mfp.active_edge &= ~1;
-		p = parport_register_port((unsigned long)&sound_ym.wd_data,
-					  IRQ_MFP_BUSY, PARPORT_DMA_NONE,
-					  &parport_atari_ops);
-		if (!p)
-			return 0;
-		if (request_irq(IRQ_MFP_BUSY, parport_atari_interrupt,
-				IRQ_TYPE_SLOW, p->name, p)) {
-			parport_unregister_port (p);
-			return 0;
-		}
-
-		this_port = p;
-		printk(KERN_INFO "%s: Atari built-in port using irq\n", p->name);
-		parport_proc_register(p);
-
-		parport_announce_port (p);
-
-		return 1;
-	}
-	return 0;
-}
-
-#ifdef MODULE
-
-MODULE_AUTHOR("Andreas Schwab");
-MODULE_DESCRIPTION("Parport Driver for Atari builtin Port");
-MODULE_SUPPORTED_DEVICE("Atari builtin Parallel Port");
-
-int
-init_module(void)
-{
-	return parport_atari_init() ? 0 : -ENODEV;
-}
-
-void
-cleanup_module(void)
-{
-	if (p->irq != PARPORT_IRQ_NONE)
-		free_irq(IRQ_MFP_BUSY, p);
-	parport_proc_unregister(this_port);
-	parport_unregister_port(this_port);
-}
-#endif