[RFC: 2.6 patch] Remove CONFIG_PARPORT_ARC, drivers/parport/parport_arc.c

[Adrian Bunk <bunk@stusta.de>]

From: Domen Puncer <domen@coderock.org>

It's wasn't referenced in Makefile since at least 2.2.8, unbuildable
due to trivial typos and things like DATA_LATCH and arc_write_control()
which doesn't exist.

Adrian Bunk:
adapted the patch to unrelated context changes

Signed-off-by: Domen Puncer <domen@coderock.org>
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>

---

 drivers/parport/Kconfig       |    5 -
 drivers/parport/parport_arc.c |  139 ----------------------------------
 2 files changed, 144 deletions(-)

--- a/drivers/parport/parport_arc.c
+++ b/drivers/parport/parport_arc.c
@@ -1,139 +0,0 @@
-/* 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)

--- linux-2.6.17-rc1-mm2-full/drivers/parport/Kconfig.old	2006-04-12 19:30:11.000000000 +0200
+++ linux-2.6.17-rc1-mm2-full/drivers/parport/Kconfig	2006-04-12 19:29:35.000000000 +0200
@@ -85,11 +85,6 @@
 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