diff --git a/arch/arm/mach-tegra/Kconfig b/arch/arm/mach-tegra/Kconfig
index f6e79ed..f7a1983 100644
--- a/arch/arm/mach-tegra/Kconfig
+++ b/arch/arm/mach-tegra/Kconfig
@@ -117,13 +117,6 @@ config TEGRA_DEBUG_UART_AUTO_SCRATCH
 
 endchoice
 
-config TEGRA_SYSTEM_DMA
-	bool "Enable system DMA driver for NVIDIA Tegra SoCs"
-	default y
-	help
-	  Adds system DMA functionality for NVIDIA Tegra SoCs, used by
-	  several Tegra device drivers
-
 config TEGRA_EMC_SCALING_ENABLE
 	bool "Enable scaling the memory frequency"
 
diff --git a/arch/arm/mach-tegra/Makefile b/arch/arm/mach-tegra/Makefile
index 060592a..7d7cb82 100644
--- a/arch/arm/mach-tegra/Makefile
+++ b/arch/arm/mach-tegra/Makefile
@@ -20,7 +20,6 @@ obj-$(CONFIG_ARCH_TEGRA_3x_SOC)		+= tegra30_clocks_data.o
 obj-$(CONFIG_SMP)			+= platsmp.o headsmp.o
 obj-$(CONFIG_SMP)                       += reset.o
 obj-$(CONFIG_HOTPLUG_CPU)               += hotplug.o
-obj-$(CONFIG_TEGRA_SYSTEM_DMA)		+= dma.o
 obj-$(CONFIG_CPU_FREQ)                  += cpu-tegra.o
 obj-$(CONFIG_TEGRA_PCI)			+= pcie.o
 obj-$(CONFIG_USB_SUPPORT)		+= usb_phy.o
diff --git a/arch/arm/mach-tegra/dma.c b/arch/arm/mach-tegra/dma.c
deleted file mode 100644
index 29c5114..0000000
--- a/arch/arm/mach-tegra/dma.c
+++ /dev/null
@@ -1,823 +0,0 @@
-/*
- * arch/arm/mach-tegra/dma.c
- *
- * System DMA driver for NVIDIA Tegra SoCs
- *
- * Copyright (c) 2008-2009, NVIDIA Corporation.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
- */
-
-#include <linux/io.h>
-#include <linux/interrupt.h>
-#include <linux/module.h>
-#include <linux/spinlock.h>
-#include <linux/err.h>
-#include <linux/irq.h>
-#include <linux/delay.h>
-#include <linux/clk.h>
-#include <mach/dma.h>
-#include <mach/irqs.h>
-#include <mach/iomap.h>
-#include <mach/suspend.h>
-
-#include "apbio.h"
-
-#define APB_DMA_GEN				0x000
-#define GEN_ENABLE				(1<<31)
-
-#define APB_DMA_CNTRL				0x010
-
-#define APB_DMA_IRQ_MASK			0x01c
-
-#define APB_DMA_IRQ_MASK_SET			0x020
-
-#define APB_DMA_CHAN_CSR			0x000
-#define CSR_ENB					(1<<31)
-#define CSR_IE_EOC				(1<<30)
-#define CSR_HOLD				(1<<29)
-#define CSR_DIR					(1<<28)
-#define CSR_ONCE				(1<<27)
-#define CSR_FLOW				(1<<21)
-#define CSR_REQ_SEL_SHIFT			16
-#define CSR_WCOUNT_SHIFT			2
-#define CSR_WCOUNT_MASK				0xFFFC
-
-#define APB_DMA_CHAN_STA				0x004
-#define STA_BUSY				(1<<31)
-#define STA_ISE_EOC				(1<<30)
-#define STA_HALT				(1<<29)
-#define STA_PING_PONG				(1<<28)
-#define STA_COUNT_SHIFT				2
-#define STA_COUNT_MASK				0xFFFC
-
-#define APB_DMA_CHAN_AHB_PTR				0x010
-
-#define APB_DMA_CHAN_AHB_SEQ				0x014
-#define AHB_SEQ_INTR_ENB			(1<<31)
-#define AHB_SEQ_BUS_WIDTH_SHIFT			28
-#define AHB_SEQ_BUS_WIDTH_MASK			(0x7<<AHB_SEQ_BUS_WIDTH_SHIFT)
-#define AHB_SEQ_BUS_WIDTH_8			(0<<AHB_SEQ_BUS_WIDTH_SHIFT)
-#define AHB_SEQ_BUS_WIDTH_16			(1<<AHB_SEQ_BUS_WIDTH_SHIFT)
-#define AHB_SEQ_BUS_WIDTH_32			(2<<AHB_SEQ_BUS_WIDTH_SHIFT)
-#define AHB_SEQ_BUS_WIDTH_64			(3<<AHB_SEQ_BUS_WIDTH_SHIFT)
-#define AHB_SEQ_BUS_WIDTH_128			(4<<AHB_SEQ_BUS_WIDTH_SHIFT)
-#define AHB_SEQ_DATA_SWAP			(1<<27)
-#define AHB_SEQ_BURST_MASK			(0x7<<24)
-#define AHB_SEQ_BURST_1				(4<<24)
-#define AHB_SEQ_BURST_4				(5<<24)
-#define AHB_SEQ_BURST_8				(6<<24)
-#define AHB_SEQ_DBL_BUF				(1<<19)
-#define AHB_SEQ_WRAP_SHIFT			16
-#define AHB_SEQ_WRAP_MASK			(0x7<<AHB_SEQ_WRAP_SHIFT)
-
-#define APB_DMA_CHAN_APB_PTR				0x018
-
-#define APB_DMA_CHAN_APB_SEQ				0x01c
-#define APB_SEQ_BUS_WIDTH_SHIFT			28
-#define APB_SEQ_BUS_WIDTH_MASK			(0x7<<APB_SEQ_BUS_WIDTH_SHIFT)
-#define APB_SEQ_BUS_WIDTH_8			(0<<APB_SEQ_BUS_WIDTH_SHIFT)
-#define APB_SEQ_BUS_WIDTH_16			(1<<APB_SEQ_BUS_WIDTH_SHIFT)
-#define APB_SEQ_BUS_WIDTH_32			(2<<APB_SEQ_BUS_WIDTH_SHIFT)
-#define APB_SEQ_BUS_WIDTH_64			(3<<APB_SEQ_BUS_WIDTH_SHIFT)
-#define APB_SEQ_BUS_WIDTH_128			(4<<APB_SEQ_BUS_WIDTH_SHIFT)
-#define APB_SEQ_DATA_SWAP			(1<<27)
-#define APB_SEQ_WRAP_SHIFT			16
-#define APB_SEQ_WRAP_MASK			(0x7<<APB_SEQ_WRAP_SHIFT)
-
-#define TEGRA_SYSTEM_DMA_CH_NR			16
-#define TEGRA_SYSTEM_DMA_AVP_CH_NUM		4
-#define TEGRA_SYSTEM_DMA_CH_MIN			0
-#define TEGRA_SYSTEM_DMA_CH_MAX	\
-	(TEGRA_SYSTEM_DMA_CH_NR - TEGRA_SYSTEM_DMA_AVP_CH_NUM - 1)
-
-#define NV_DMA_MAX_TRASFER_SIZE 0x10000
-
-static const unsigned int ahb_addr_wrap_table[8] = {
-	0, 32, 64, 128, 256, 512, 1024, 2048
-};
-
-static const unsigned int apb_addr_wrap_table[8] = {
-	0, 1, 2, 4, 8, 16, 32, 64
-};
-
-static const unsigned int bus_width_table[5] = {
-	8, 16, 32, 64, 128
-};
-
-#define TEGRA_DMA_NAME_SIZE 16
-struct tegra_dma_channel {
-	struct list_head	list;
-	int			id;
-	spinlock_t		lock;
-	char			name[TEGRA_DMA_NAME_SIZE];
-	void  __iomem		*addr;
-	int			mode;
-	int			irq;
-	int			req_transfer_count;
-};
-
-#define  NV_DMA_MAX_CHANNELS  32
-
-static bool tegra_dma_initialized;
-static DEFINE_MUTEX(tegra_dma_lock);
-static DEFINE_SPINLOCK(enable_lock);
-
-static DECLARE_BITMAP(channel_usage, NV_DMA_MAX_CHANNELS);
-static struct tegra_dma_channel dma_channels[NV_DMA_MAX_CHANNELS];
-
-static void tegra_dma_update_hw(struct tegra_dma_channel *ch,
-	struct tegra_dma_req *req);
-static void tegra_dma_update_hw_partial(struct tegra_dma_channel *ch,
-	struct tegra_dma_req *req);
-static void tegra_dma_stop(struct tegra_dma_channel *ch);
-
-void tegra_dma_flush(struct tegra_dma_channel *ch)
-{
-}
-EXPORT_SYMBOL(tegra_dma_flush);
-
-void tegra_dma_dequeue(struct tegra_dma_channel *ch)
-{
-	struct tegra_dma_req *req;
-
-	if (tegra_dma_is_empty(ch))
-		return;
-
-	req = list_entry(ch->list.next, typeof(*req), node);
-
-	tegra_dma_dequeue_req(ch, req);
-	return;
-}
-
-static void tegra_dma_stop(struct tegra_dma_channel *ch)
-{
-	u32 csr;
-	u32 status;
-
-	csr = readl(ch->addr + APB_DMA_CHAN_CSR);
-	csr &= ~CSR_IE_EOC;
-	writel(csr, ch->addr + APB_DMA_CHAN_CSR);
-
-	csr &= ~CSR_ENB;
-	writel(csr, ch->addr + APB_DMA_CHAN_CSR);
-
-	status = readl(ch->addr + APB_DMA_CHAN_STA);
-	if (status & STA_ISE_EOC)
-		writel(status, ch->addr + APB_DMA_CHAN_STA);
-}
-
-static int tegra_dma_cancel(struct tegra_dma_channel *ch)
-{
-	unsigned long irq_flags;
-
-	spin_lock_irqsave(&ch->lock, irq_flags);
-	while (!list_empty(&ch->list))
-		list_del(ch->list.next);
-
-	tegra_dma_stop(ch);
-
-	spin_unlock_irqrestore(&ch->lock, irq_flags);
-	return 0;
-}
-
-static unsigned int get_channel_status(struct tegra_dma_channel *ch,
-			struct tegra_dma_req *req, bool is_stop_dma)
-{
-	void __iomem *addr = IO_ADDRESS(TEGRA_APB_DMA_BASE);
-	unsigned int status;
-
-	if (is_stop_dma) {
-		/*
-		 * STOP the DMA and get the transfer count.
-		 * Getting the transfer count is tricky.
-		 *  - Globally disable DMA on all channels
-		 *  - Read the channel's status register to know the number
-		 *    of pending bytes to be transfered.
-		 *  - Stop the dma channel
-		 *  - Globally re-enable DMA to resume other transfers
-		 */
-		spin_lock(&enable_lock);
-		writel(0, addr + APB_DMA_GEN);
-		udelay(20);
-		status = readl(ch->addr + APB_DMA_CHAN_STA);
-		tegra_dma_stop(ch);
-		writel(GEN_ENABLE, addr + APB_DMA_GEN);
-		spin_unlock(&enable_lock);
-		if (status & STA_ISE_EOC) {
-			pr_err("Got Dma Int here clearing");
-			writel(status, ch->addr + APB_DMA_CHAN_STA);
-		}
-		req->status = TEGRA_DMA_REQ_ERROR_ABORTED;
-	} else {
-		status = readl(ch->addr + APB_DMA_CHAN_STA);
-	}
-	return status;
-}
-
-/* should be called with the channel lock held */
-static unsigned int dma_active_count(struct tegra_dma_channel *ch,
-	struct tegra_dma_req *req, unsigned int status)
-{
-	unsigned int to_transfer;
-	unsigned int req_transfer_count;
-	unsigned int bytes_transferred;
-
-	to_transfer = ((status & STA_COUNT_MASK) >> STA_COUNT_SHIFT) + 1;
-	req_transfer_count = ch->req_transfer_count + 1;
-	bytes_transferred = req_transfer_count;
-	if (status & STA_BUSY)
-		bytes_transferred -= to_transfer;
-	/*
-	 * In continuous transfer mode, DMA only tracks the count of the
-	 * half DMA buffer. So, if the DMA already finished half the DMA
-	 * then add the half buffer to the completed count.
-	 */
-	if (ch->mode & TEGRA_DMA_MODE_CONTINOUS) {
-		if (req->buffer_status == TEGRA_DMA_REQ_BUF_STATUS_HALF_FULL)
-			bytes_transferred += req_transfer_count;
-		if (status & STA_ISE_EOC)
-			bytes_transferred += req_transfer_count;
-	}
-	bytes_transferred *= 4;
-	return bytes_transferred;
-}
-
-int tegra_dma_dequeue_req(struct tegra_dma_channel *ch,
-	struct tegra_dma_req *_req)
-{
-	unsigned int status;
-	struct tegra_dma_req *req = NULL;
-	int found = 0;
-	unsigned long irq_flags;
-	int stop = 0;
-
-	spin_lock_irqsave(&ch->lock, irq_flags);
-
-	if (list_entry(ch->list.next, struct tegra_dma_req, node) == _req)
-		stop = 1;
-
-	list_for_each_entry(req, &ch->list, node) {
-		if (req == _req) {
-			list_del(&req->node);
-			found = 1;
-			break;
-		}
-	}
-	if (!found) {
-		spin_unlock_irqrestore(&ch->lock, irq_flags);
-		return 0;
-	}
-
-	if (!stop)
-		goto skip_stop_dma;
-
-	status = get_channel_status(ch, req, true);
-	req->bytes_transferred = dma_active_count(ch, req, status);
-
-	if (!list_empty(&ch->list)) {
-		/* if the list is not empty, queue the next request */
-		struct tegra_dma_req *next_req;
-		next_req = list_entry(ch->list.next,
-			typeof(*next_req), node);
-		tegra_dma_update_hw(ch, next_req);
-	}
-
-skip_stop_dma:
-	req->status = -TEGRA_DMA_REQ_ERROR_ABORTED;
-
-	spin_unlock_irqrestore(&ch->lock, irq_flags);
-
-	/* Callback should be called without any lock */
-	req->complete(req);
-	return 0;
-}
-EXPORT_SYMBOL(tegra_dma_dequeue_req);
-
-bool tegra_dma_is_empty(struct tegra_dma_channel *ch)
-{
-	unsigned long irq_flags;
-	bool is_empty;
-
-	spin_lock_irqsave(&ch->lock, irq_flags);
-	if (list_empty(&ch->list))
-		is_empty = true;
-	else
-		is_empty = false;
-	spin_unlock_irqrestore(&ch->lock, irq_flags);
-	return is_empty;
-}
-EXPORT_SYMBOL(tegra_dma_is_empty);
-
-bool tegra_dma_is_req_inflight(struct tegra_dma_channel *ch,
-	struct tegra_dma_req *_req)
-{
-	unsigned long irq_flags;
-	struct tegra_dma_req *req;
-
-	spin_lock_irqsave(&ch->lock, irq_flags);
-	list_for_each_entry(req, &ch->list, node) {
-		if (req == _req) {
-			spin_unlock_irqrestore(&ch->lock, irq_flags);
-			return true;
-		}
-	}
-	spin_unlock_irqrestore(&ch->lock, irq_flags);
-	return false;
-}
-EXPORT_SYMBOL(tegra_dma_is_req_inflight);
-
-int tegra_dma_enqueue_req(struct tegra_dma_channel *ch,
-	struct tegra_dma_req *req)
-{
-	unsigned long irq_flags;
-	struct tegra_dma_req *_req;
-	int start_dma = 0;
-
-	if (req->size > NV_DMA_MAX_TRASFER_SIZE ||
-		req->source_addr & 0x3 || req->dest_addr & 0x3) {
-		pr_err("Invalid DMA request for channel %d\n", ch->id);
-		return -EINVAL;
-	}
-
-	spin_lock_irqsave(&ch->lock, irq_flags);
-
-	list_for_each_entry(_req, &ch->list, node) {
-		if (req == _req) {
-		    spin_unlock_irqrestore(&ch->lock, irq_flags);
-		    return -EEXIST;
-		}
-	}
-
-	req->bytes_transferred = 0;
-	req->status = 0;
-	req->buffer_status = 0;
-	if (list_empty(&ch->list))
-		start_dma = 1;
-
-	list_add_tail(&req->node, &ch->list);
-
-	if (start_dma)
-		tegra_dma_update_hw(ch, req);
-
-	spin_unlock_irqrestore(&ch->lock, irq_flags);
-
-	return 0;
-}
-EXPORT_SYMBOL(tegra_dma_enqueue_req);
-
-struct tegra_dma_channel *tegra_dma_allocate_channel(int mode)
-{
-	int channel;
-	struct tegra_dma_channel *ch = NULL;
-
-	if (!tegra_dma_initialized)
-		return NULL;
-
-	mutex_lock(&tegra_dma_lock);
-
-	/* first channel is the shared channel */
-	if (mode & TEGRA_DMA_SHARED) {
-		channel = TEGRA_SYSTEM_DMA_CH_MIN;
-	} else {
-		channel = find_first_zero_bit(channel_usage,
-			ARRAY_SIZE(dma_channels));
-		if (channel >= ARRAY_SIZE(dma_channels))
-			goto out;
-	}
-	__set_bit(channel, channel_usage);
-	ch = &dma_channels[channel];
-	ch->mode = mode;
-
-out:
-	mutex_unlock(&tegra_dma_lock);
-	return ch;
-}
-EXPORT_SYMBOL(tegra_dma_allocate_channel);
-
-void tegra_dma_free_channel(struct tegra_dma_channel *ch)
-{
-	if (ch->mode & TEGRA_DMA_SHARED)
-		return;
-	tegra_dma_cancel(ch);
-	mutex_lock(&tegra_dma_lock);
-	__clear_bit(ch->id, channel_usage);
-	mutex_unlock(&tegra_dma_lock);
-}
-EXPORT_SYMBOL(tegra_dma_free_channel);
-
-static void tegra_dma_update_hw_partial(struct tegra_dma_channel *ch,
-	struct tegra_dma_req *req)
-{
-	u32 apb_ptr;
-	u32 ahb_ptr;
-
-	if (req->to_memory) {
-		apb_ptr = req->source_addr;
-		ahb_ptr = req->dest_addr;
-	} else {
-		apb_ptr = req->dest_addr;
-		ahb_ptr = req->source_addr;
-	}
-	writel(apb_ptr, ch->addr + APB_DMA_CHAN_APB_PTR);
-	writel(ahb_ptr, ch->addr + APB_DMA_CHAN_AHB_PTR);
-
-	req->status = TEGRA_DMA_REQ_INFLIGHT;
-	return;
-}
-
-static void tegra_dma_update_hw(struct tegra_dma_channel *ch,
-	struct tegra_dma_req *req)
-{
-	int ahb_addr_wrap;
-	int apb_addr_wrap;
-	int ahb_bus_width;
-	int apb_bus_width;
-	int index;
-
-	u32 ahb_seq;
-	u32 apb_seq;
-	u32 ahb_ptr;
-	u32 apb_ptr;
-	u32 csr;
-
-	csr = CSR_IE_EOC | CSR_FLOW;
-	ahb_seq = AHB_SEQ_INTR_ENB | AHB_SEQ_BURST_1;
-	apb_seq = 0;
-
-	csr |= req->req_sel << CSR_REQ_SEL_SHIFT;
-
-	/* One shot mode is always single buffered,
-	 * continuous mode is always double buffered
-	 * */
-	if (ch->mode & TEGRA_DMA_MODE_ONESHOT) {
-		csr |= CSR_ONCE;
-		ch->req_transfer_count = (req->size >> 2) - 1;
-	} else {
-		ahb_seq |= AHB_SEQ_DBL_BUF;
-
-		/* In double buffered mode, we set the size to half the
-		 * requested size and interrupt when half the buffer
-		 * is full */
-		ch->req_transfer_count = (req->size >> 3) - 1;
-	}
-
-	csr |= ch->req_transfer_count << CSR_WCOUNT_SHIFT;
-
-	if (req->to_memory) {
-		apb_ptr = req->source_addr;
-		ahb_ptr = req->dest_addr;
-
-		apb_addr_wrap = req->source_wrap;
-		ahb_addr_wrap = req->dest_wrap;
-		apb_bus_width = req->source_bus_width;
-		ahb_bus_width = req->dest_bus_width;
-
-	} else {
-		csr |= CSR_DIR;
-		apb_ptr = req->dest_addr;
-		ahb_ptr = req->source_addr;
-
-		apb_addr_wrap = req->dest_wrap;
-		ahb_addr_wrap = req->source_wrap;
-		apb_bus_width = req->dest_bus_width;
-		ahb_bus_width = req->source_bus_width;
-	}
-
-	apb_addr_wrap >>= 2;
-	ahb_addr_wrap >>= 2;
-
-	/* set address wrap for APB size */
-	index = 0;
-	do  {
-		if (apb_addr_wrap_table[index] == apb_addr_wrap)
-			break;
-		index++;
-	} while (index < ARRAY_SIZE(apb_addr_wrap_table));
-	BUG_ON(index == ARRAY_SIZE(apb_addr_wrap_table));
-	apb_seq |= index << APB_SEQ_WRAP_SHIFT;
-
-	/* set address wrap for AHB size */
-	index = 0;
-	do  {
-		if (ahb_addr_wrap_table[index] == ahb_addr_wrap)
-			break;
-		index++;
-	} while (index < ARRAY_SIZE(ahb_addr_wrap_table));
-	BUG_ON(index == ARRAY_SIZE(ahb_addr_wrap_table));
-	ahb_seq |= index << AHB_SEQ_WRAP_SHIFT;
-
-	for (index = 0; index < ARRAY_SIZE(bus_width_table); index++) {
-		if (bus_width_table[index] == ahb_bus_width)
-			break;
-	}
-	BUG_ON(index == ARRAY_SIZE(bus_width_table));
-	ahb_seq |= index << AHB_SEQ_BUS_WIDTH_SHIFT;
-
-	for (index = 0; index < ARRAY_SIZE(bus_width_table); index++) {
-		if (bus_width_table[index] == apb_bus_width)
-			break;
-	}
-	BUG_ON(index == ARRAY_SIZE(bus_width_table));
-	apb_seq |= index << APB_SEQ_BUS_WIDTH_SHIFT;
-
-	writel(csr, ch->addr + APB_DMA_CHAN_CSR);
-	writel(apb_seq, ch->addr + APB_DMA_CHAN_APB_SEQ);
-	writel(apb_ptr, ch->addr + APB_DMA_CHAN_APB_PTR);
-	writel(ahb_seq, ch->addr + APB_DMA_CHAN_AHB_SEQ);
-	writel(ahb_ptr, ch->addr + APB_DMA_CHAN_AHB_PTR);
-
-	csr |= CSR_ENB;
-	writel(csr, ch->addr + APB_DMA_CHAN_CSR);
-
-	req->status = TEGRA_DMA_REQ_INFLIGHT;
-}
-
-static void handle_oneshot_dma(struct tegra_dma_channel *ch)
-{
-	struct tegra_dma_req *req;
-	unsigned long irq_flags;
-
-	spin_lock_irqsave(&ch->lock, irq_flags);
-	if (list_empty(&ch->list)) {
-		spin_unlock_irqrestore(&ch->lock, irq_flags);
-		return;
-	}
-
-	req = list_entry(ch->list.next, typeof(*req), node);
-	if (req) {
-		int bytes_transferred;
-
-		bytes_transferred = ch->req_transfer_count;
-		bytes_transferred += 1;
-		bytes_transferred <<= 2;
-
-		list_del(&req->node);
-		req->bytes_transferred = bytes_transferred;
-		req->status = TEGRA_DMA_REQ_SUCCESS;
-
-		spin_unlock_irqrestore(&ch->lock, irq_flags);
-		/* Callback should be called without any lock */
-		pr_debug("%s: transferred %d bytes\n", __func__,
-			req->bytes_transferred);
-		req->complete(req);
-		spin_lock_irqsave(&ch->lock, irq_flags);
-	}
-
-	if (!list_empty(&ch->list)) {
-		req = list_entry(ch->list.next, typeof(*req), node);
-		/* the complete function we just called may have enqueued
-		   another req, in which case dma has already started */
-		if (req->status != TEGRA_DMA_REQ_INFLIGHT)
-			tegra_dma_update_hw(ch, req);
-	}
-	spin_unlock_irqrestore(&ch->lock, irq_flags);
-}
-
-static void handle_continuous_dma(struct tegra_dma_channel *ch)
-{
-	struct tegra_dma_req *req;
-	unsigned long irq_flags;
-
-	spin_lock_irqsave(&ch->lock, irq_flags);
-	if (list_empty(&ch->list)) {
-		spin_unlock_irqrestore(&ch->lock, irq_flags);
-		return;
-	}
-
-	req = list_entry(ch->list.next, typeof(*req), node);
-	if (req) {
-		if (req->buffer_status == TEGRA_DMA_REQ_BUF_STATUS_EMPTY) {
-			bool is_dma_ping_complete;
-			is_dma_ping_complete = (readl(ch->addr + APB_DMA_CHAN_STA)
-						& STA_PING_PONG) ? true : false;
-			if (req->to_memory)
-				is_dma_ping_complete = !is_dma_ping_complete;
-			/* Out of sync - Release current buffer */
-			if (!is_dma_ping_complete) {
-				int bytes_transferred;
-
-				bytes_transferred = ch->req_transfer_count;
-				bytes_transferred += 1;
-				bytes_transferred <<= 3;
-				req->buffer_status = TEGRA_DMA_REQ_BUF_STATUS_FULL;
-				req->bytes_transferred = bytes_transferred;
-				req->status = TEGRA_DMA_REQ_SUCCESS;
-				tegra_dma_stop(ch);
-
-				if (!list_is_last(&req->node, &ch->list)) {
-					struct tegra_dma_req *next_req;
-
-					next_req = list_entry(req->node.next,
-						typeof(*next_req), node);
-					tegra_dma_update_hw(ch, next_req);
-				}
-
-				list_del(&req->node);
-
-				/* DMA lock is NOT held when callbak is called */
-				spin_unlock_irqrestore(&ch->lock, irq_flags);
-				req->complete(req);
-				return;
-			}
-			/* Load the next request into the hardware, if available
-			 * */
-			if (!list_is_last(&req->node, &ch->list)) {
-				struct tegra_dma_req *next_req;
-
-				next_req = list_entry(req->node.next,
-					typeof(*next_req), node);
-				tegra_dma_update_hw_partial(ch, next_req);
-			}
-			req->buffer_status = TEGRA_DMA_REQ_BUF_STATUS_HALF_FULL;
-			req->status = TEGRA_DMA_REQ_SUCCESS;
-			/* DMA lock is NOT held when callback is called */
-			spin_unlock_irqrestore(&ch->lock, irq_flags);
-			if (likely(req->threshold))
-				req->threshold(req);
-			return;
-
-		} else if (req->buffer_status ==
-			TEGRA_DMA_REQ_BUF_STATUS_HALF_FULL) {
-			/* Callback when the buffer is completely full (i.e on
-			 * the second  interrupt */
-			int bytes_transferred;
-
-			bytes_transferred = ch->req_transfer_count;
-			bytes_transferred += 1;
-			bytes_transferred <<= 3;
-
-			req->buffer_status = TEGRA_DMA_REQ_BUF_STATUS_FULL;
-			req->bytes_transferred = bytes_transferred;
-			req->status = TEGRA_DMA_REQ_SUCCESS;
-			list_del(&req->node);
-
-			/* DMA lock is NOT held when callbak is called */
-			spin_unlock_irqrestore(&ch->lock, irq_flags);
-			req->complete(req);
-			return;
-
-		} else {
-			BUG();
-		}
-	}
-	spin_unlock_irqrestore(&ch->lock, irq_flags);
-}
-
-static irqreturn_t dma_isr(int irq, void *data)
-{
-	struct tegra_dma_channel *ch = data;
-	unsigned long status;
-
-	status = readl(ch->addr + APB_DMA_CHAN_STA);
-	if (status & STA_ISE_EOC)
-		writel(status, ch->addr + APB_DMA_CHAN_STA);
-	else {
-		pr_warning("Got a spurious ISR for DMA channel %d\n", ch->id);
-		return IRQ_HANDLED;
-	}
-	return IRQ_WAKE_THREAD;
-}
-
-static irqreturn_t dma_thread_fn(int irq, void *data)
-{
-	struct tegra_dma_channel *ch = data;
-
-	if (ch->mode & TEGRA_DMA_MODE_ONESHOT)
-		handle_oneshot_dma(ch);
-	else
-		handle_continuous_dma(ch);
-
-
-	return IRQ_HANDLED;
-}
-
-int __init tegra_dma_init(void)
-{
-	int ret = 0;
-	int i;
-	unsigned int irq;
-	void __iomem *addr;
-	struct clk *c;
-
-	bitmap_fill(channel_usage, NV_DMA_MAX_CHANNELS);
-
-	c = clk_get_sys("tegra-apbdma", NULL);
-	if (IS_ERR(c)) {
-		pr_err("Unable to get clock for APB DMA\n");
-		ret = PTR_ERR(c);
-		goto fail;
-	}
-	ret = clk_prepare_enable(c);
-	if (ret != 0) {
-		pr_err("Unable to enable clock for APB DMA\n");
-		goto fail;
-	}
-
-	addr = IO_ADDRESS(TEGRA_APB_DMA_BASE);
-	writel(GEN_ENABLE, addr + APB_DMA_GEN);
-	writel(0, addr + APB_DMA_CNTRL);
-	writel(0xFFFFFFFFul >> (31 - TEGRA_SYSTEM_DMA_CH_MAX),
-	       addr + APB_DMA_IRQ_MASK_SET);
-
-	for (i = TEGRA_SYSTEM_DMA_CH_MIN; i <= TEGRA_SYSTEM_DMA_CH_MAX; i++) {
-		struct tegra_dma_channel *ch = &dma_channels[i];
-
-		ch->id = i;
-		snprintf(ch->name, TEGRA_DMA_NAME_SIZE, "dma_channel_%d", i);
-
-		ch->addr = IO_ADDRESS(TEGRA_APB_DMA_CH0_BASE +
-			TEGRA_APB_DMA_CH0_SIZE * i);
-
-		spin_lock_init(&ch->lock);
-		INIT_LIST_HEAD(&ch->list);
-
-		irq = INT_APB_DMA_CH0 + i;
-		ret = request_threaded_irq(irq, dma_isr, dma_thread_fn, 0,
-			dma_channels[i].name, ch);
-		if (ret) {
-			pr_err("Failed to register IRQ %d for DMA %d\n",
-				irq, i);
-			goto fail;
-		}
-		ch->irq = irq;
-
-		__clear_bit(i, channel_usage);
-	}
-	/* mark the shared channel allocated */
-	__set_bit(TEGRA_SYSTEM_DMA_CH_MIN, channel_usage);
-
-	tegra_dma_initialized = true;
-
-	return 0;
-fail:
-	writel(0, addr + APB_DMA_GEN);
-	for (i = TEGRA_SYSTEM_DMA_CH_MIN; i <= TEGRA_SYSTEM_DMA_CH_MAX; i++) {
-		struct tegra_dma_channel *ch = &dma_channels[i];
-		if (ch->irq)
-			free_irq(ch->irq, ch);
-	}
-	return ret;
-}
-postcore_initcall(tegra_dma_init);
-
-#ifdef CONFIG_PM
-static u32 apb_dma[5*TEGRA_SYSTEM_DMA_CH_NR + 3];
-
-void tegra_dma_suspend(void)
-{
-	void __iomem *addr = IO_ADDRESS(TEGRA_APB_DMA_BASE);
-	u32 *ctx = apb_dma;
-	int i;
-
-	*ctx++ = readl(addr + APB_DMA_GEN);
-	*ctx++ = readl(addr + APB_DMA_CNTRL);
-	*ctx++ = readl(addr + APB_DMA_IRQ_MASK);
-
-	for (i = 0; i < TEGRA_SYSTEM_DMA_CH_NR; i++) {
-		addr = IO_ADDRESS(TEGRA_APB_DMA_CH0_BASE +
-				  TEGRA_APB_DMA_CH0_SIZE * i);
-
-		*ctx++ = readl(addr + APB_DMA_CHAN_CSR);
-		*ctx++ = readl(addr + APB_DMA_CHAN_AHB_PTR);
-		*ctx++ = readl(addr + APB_DMA_CHAN_AHB_SEQ);
-		*ctx++ = readl(addr + APB_DMA_CHAN_APB_PTR);
-		*ctx++ = readl(addr + APB_DMA_CHAN_APB_SEQ);
-	}
-}
-
-void tegra_dma_resume(void)
-{
-	void __iomem *addr = IO_ADDRESS(TEGRA_APB_DMA_BASE);
-	u32 *ctx = apb_dma;
-	int i;
-
-	writel(*ctx++, addr + APB_DMA_GEN);
-	writel(*ctx++, addr + APB_DMA_CNTRL);
-	writel(*ctx++, addr + APB_DMA_IRQ_MASK);
-
-	for (i = 0; i < TEGRA_SYSTEM_DMA_CH_NR; i++) {
-		addr = IO_ADDRESS(TEGRA_APB_DMA_CH0_BASE +
-				  TEGRA_APB_DMA_CH0_SIZE * i);
-
-		writel(*ctx++, addr + APB_DMA_CHAN_CSR);
-		writel(*ctx++, addr + APB_DMA_CHAN_AHB_PTR);
-		writel(*ctx++, addr + APB_DMA_CHAN_AHB_SEQ);
-		writel(*ctx++, addr + APB_DMA_CHAN_APB_PTR);
-		writel(*ctx++, addr + APB_DMA_CHAN_APB_SEQ);
-	}
-}
-
-#endif
diff --git a/arch/arm/mach-tegra/include/mach/dma.h b/arch/arm/mach-tegra/include/mach/dma.h
index 9077092..3081cc6 100644
--- a/arch/arm/mach-tegra/include/mach/dma.h
+++ b/arch/arm/mach-tegra/include/mach/dma.h
@@ -51,101 +51,4 @@
 #define TEGRA_DMA_REQ_SEL_OWR			25
 #define TEGRA_DMA_REQ_SEL_INVALID		31
 
-struct tegra_dma_req;
-struct tegra_dma_channel;
-
-enum tegra_dma_mode {
-	TEGRA_DMA_SHARED = 1,
-	TEGRA_DMA_MODE_CONTINOUS = 2,
-	TEGRA_DMA_MODE_ONESHOT = 4,
-};
-
-enum tegra_dma_req_error {
-	TEGRA_DMA_REQ_SUCCESS = 0,
-	TEGRA_DMA_REQ_ERROR_ABORTED,
-	TEGRA_DMA_REQ_INFLIGHT,
-};
-
-enum tegra_dma_req_buff_status {
-	TEGRA_DMA_REQ_BUF_STATUS_EMPTY = 0,
-	TEGRA_DMA_REQ_BUF_STATUS_HALF_FULL,
-	TEGRA_DMA_REQ_BUF_STATUS_FULL,
-};
-
-struct tegra_dma_req {
-	struct list_head node;
-	unsigned int modid;
-	int instance;
-
-	/* Called when the req is complete and from the DMA ISR context.
-	 * When this is called the req structure is no longer queued by
-	 * the DMA channel.
-	 *
-	 * State of the DMA depends on the number of req it has. If there are
-	 * no DMA requests queued up, then it will STOP the DMA. It there are
-	 * more requests in the DMA, then it will queue the next request.
-	 */
-	void (*complete)(struct tegra_dma_req *req);
-
-	/*  This is a called from the DMA ISR context when the DMA is still in
-	 *  progress and is actively filling same buffer.
-	 *
-	 *  In case of continuous mode receive, this threshold is 1/2 the buffer
-	 *  size. In other cases, this will not even be called as there is no
-	 *  hardware support for it.
-	 *
-	 * In the case of continuous mode receive, if there is next req already
-	 * queued, DMA programs the HW to use that req when this req is
-	 * completed. If there is no "next req" queued, then DMA ISR doesn't do
-	 * anything before calling this callback.
-	 *
-	 *	This is mainly used by the cases, where the clients has queued
-	 *	only one req and want to get some sort of DMA threshold
-	 *	callback to program the next buffer.
-	 *
-	 */
-	void (*threshold)(struct tegra_dma_req *req);
-
-	/* 1 to copy to memory.
-	 * 0 to copy from the memory to device FIFO */
-	int to_memory;
-
-	void *virt_addr;
-
-	unsigned long source_addr;
-	unsigned long dest_addr;
-	unsigned long dest_wrap;
-	unsigned long source_wrap;
-	unsigned long source_bus_width;
-	unsigned long dest_bus_width;
-	unsigned long req_sel;
-	unsigned int size;
-
-	/* Updated by the DMA driver on the conpletion of the request. */
-	int bytes_transferred;
-	int status;
-
-	/* DMA completion tracking information */
-	int buffer_status;
-
-	/* Client specific data */
-	void *dev;
-};
-
-int tegra_dma_enqueue_req(struct tegra_dma_channel *ch,
-	struct tegra_dma_req *req);
-int tegra_dma_dequeue_req(struct tegra_dma_channel *ch,
-	struct tegra_dma_req *req);
-void tegra_dma_dequeue(struct tegra_dma_channel *ch);
-void tegra_dma_flush(struct tegra_dma_channel *ch);
-
-bool tegra_dma_is_req_inflight(struct tegra_dma_channel *ch,
-	struct tegra_dma_req *req);
-bool tegra_dma_is_empty(struct tegra_dma_channel *ch);
-
-struct tegra_dma_channel *tegra_dma_allocate_channel(int mode);
-void tegra_dma_free_channel(struct tegra_dma_channel *ch);
-
-int __init tegra_dma_init(void);
-
 #endif
