sh: dma: Kill off ISA DMA wrapper.

There are no more users for this code, and it has been deprecated for
some time, so just kill it off.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/Kconfig

@@ -486,9 +486,6 @@ source "arch/sh/drivers/Kconfig"
 
 endmenu
 
-config ISA_DMA_API
-	bool
-
 menu "Kernel features"
 
 source kernel/Kconfig.hz

arch/sh/drivers/dma/Makefile

@@ -3,7 +3,6 @@
 #
 
 obj-$(CONFIG_SH_DMA_API)	+= dma-api.o dma-sysfs.o
-obj-$(CONFIG_ISA_DMA_API)	+= dma-isa.o
 obj-$(CONFIG_SH_DMA)		+= dma-sh.o
 obj-$(CONFIG_SH_DREAMCAST)	+= dma-pvr2.o dma-g2.o
 obj-$(CONFIG_SH_DMABRG)		+= dmabrg.o

arch/sh/drivers/dma/dma-isa.c

-/*
- * arch/sh/drivers/dma/dma-isa.c
- *
- * Generic ISA DMA wrapper for SH DMA API
- *
- * Copyright (C) 2003, 2004  Paul Mundt
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- */
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <asm/dma.h>
-
-/*
- * This implements a small wrapper set to make code using the old ISA DMA API
- * work with the SH DMA API. Since most of the work in the new API happens
- * at ops->xfer() time, we simply use the various set_dma_xxx() routines to
- * fill in per-channel info, and then hand hand this off to ops->xfer() at
- * enable_dma() time.
- *
- * For channels that are doing on-demand data transfer via cascading, the
- * channel itself will still need to be configured through the new API. As
- * such, this code is meant for only the simplest of tasks (and shouldn't be
- * used in any new drivers at all).
- *
- * NOTE: ops->xfer() is the preferred way of doing things. However, there
- * are some users of the ISA DMA API that exist in common code that we
- * don't necessarily want to go out of our way to break, so we still
- * allow for some compatibility at that level. Any new code is strongly
- * advised to run far away from the ISA DMA API and use the SH DMA API
- * directly.
- */
-unsigned long claim_dma_lock(void)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&dma_spin_lock, flags);
-
-	return flags;
-}
-EXPORT_SYMBOL(claim_dma_lock);
-
-void release_dma_lock(unsigned long flags)
-{
-	spin_unlock_irqrestore(&dma_spin_lock, flags);
-}
-EXPORT_SYMBOL(release_dma_lock);
-
-void disable_dma(unsigned int chan)
-{
-	/* Nothing */
-}
-EXPORT_SYMBOL(disable_dma);
-
-void enable_dma(unsigned int chan)
-{
-	struct dma_info *info = get_dma_info(chan);
-	struct dma_channel *channel = &info->channels[chan];
-
-	info->ops->xfer(channel);
-}
-EXPORT_SYMBOL(enable_dma);
-
-void clear_dma_ff(unsigned int chan)
-{
-	/* Nothing */
-}
-EXPORT_SYMBOL(clear_dma_ff);
-
-void set_dma_mode(unsigned int chan, char mode)
-{
-	struct dma_info *info = get_dma_info(chan);
-	struct dma_channel *channel = &info->channels[chan];
-
-	channel->mode = mode;
-}
-EXPORT_SYMBOL(set_dma_mode);
-
-void set_dma_addr(unsigned int chan, unsigned int addr)
-{
-	struct dma_info *info = get_dma_info(chan);
-	struct dma_channel *channel = &info->channels[chan];
-
-	/*
-	 * Single address mode is the only thing supported through
-	 * this interface.
-	 */
-	if ((channel->mode & DMA_MODE_MASK) == DMA_MODE_READ) {
-		channel->sar = addr;
-	} else {
-		channel->dar = addr;
-	}
-}
-EXPORT_SYMBOL(set_dma_addr);
-
-void set_dma_count(unsigned int chan, unsigned int count)
-{
-	struct dma_info *info = get_dma_info(chan);
-	struct dma_channel *channel = &info->channels[chan];
-
-	channel->count = count;
-}
-EXPORT_SYMBOL(set_dma_count);
-