[PATCH] Remove CONFIG_PARPORT_ARC, drivers/parport/parport_arc.c

config PARPORT_NOT_PC

	bool

config PARPORT_ARC

	tristate "Archimedes hardware"

	depends on ARM && PARPORT

	select PARPORT_NOT_PC

config PARPORT_IP32

	tristate "SGI IP32 builtin port (EXPERIMENTAL)"

	depends on SGI_IP32 && PARPORT && EXPERIMENTAL

/* Low-level parallel port routines for Archimedes onboard hardware

 *

 * Author: Phil Blundell <philb@gnu.org>

 */

/* This driver is for the parallel port hardware found on Acorn's old

 * range of Archimedes machines.  The A5000 and newer systems have PC-style

 * I/O hardware and should use the parport_pc driver instead.

 *

 * The Acorn printer port hardware is very simple.  There is a single 8-bit

 * write-only latch for the data port and control/status bits are handled

 * with various auxilliary input and output lines.  The port is not

 * bidirectional, does not support any modes other than SPP, and has only

 * a subset of the standard printer control lines connected.

 */

#include <linux/threads.h>

#include <linux/delay.h>

#include <linux/errno.h>

#include <linux/interrupt.h>

#include <linux/ioport.h>

#include <linux/kernel.h>

#include <linux/slab.h>

#include <linux/parport.h>

#include <asm/ptrace.h>

#include <asm/io.h>

#include <asm/arch/oldlatches.h>

#include <asm/arch/irqs.h>

#define DATA_ADDRESS    0x3350010

/* This is equivalent to the above and only used for request_region. */

#define PORT_BASE       0x80000000 | ((DATA_ADDRESS - IO_BASE) >> 2)

/* The hardware can't read from the data latch, so we must use a soft

   copy. */

static unsigned char data_copy;

/* These are pretty simple. We know the irq is never shared and the

   kernel does all the magic that's required. */

static void arc_enable_irq(struct parport *p)

{

	enable_irq(p->irq);

}

static void arc_disable_irq(struct parport *p)

{

	disable_irq(p->irq);

}

static void arc_interrupt(int irq, void *dev_id, struct pt_regs *regs)

{

	parport_generic_irq(irq, (struct parport *) dev_id, regs);

}

static void arc_write_data(struct parport *p, unsigned char data)

{

	data_copy = data;

	outb_t(data, DATA_LATCH);

}

static unsigned char arc_read_data(struct parport *p)

{

	return data_copy;

}

static struct parport_operations parport_arc_ops = 

{

	.write_data	= arc_write_data,

	.read_data	= arc_read_data,

	.write_control	= arc_write_control,

	.read_control	= arc_read_control,

	.frob_control	= arc_frob_control,

	.read_status	= arc_read_status,

	.enable_irq	= arc_enable_irq,

	.disable_irq	= arc_disable_irq,

	.data_forward	= arc_data_forward,

	.data_reverse	= arc_data_reverse,

	.init_state	= arc_init_state,

	.save_state	= arc_save_state,

	.restore_state	= arc_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 parport_arc_init(void)

{

	/* Archimedes hardware provides only one port, at a fixed address */

	struct parport *p;

	struct resource res;

	char *fake_name = "parport probe");

	res = request_region(PORT_BASE, 1, fake_name);

	if (res == NULL)

		return 0;

	p = parport_register_port (PORT_BASE, IRQ_PRINTERACK,

				   PARPORT_DMA_NONE, &parport_arc_ops);

	if (!p) {

		release_region(PORT_BASE, 1);

		return 0;

	}

	p->modes = PARPORT_MODE_ARCSPP;

	p->size = 1;

	rename_region(res, p->name);

	printk(KERN_INFO "%s: Archimedes on-board port, using irq %d\n",

	       p->irq);

	/* Tell the high-level drivers about the port. */

	parport_announce_port (p);

	return 1;

}

module_init(parport_arc_init)