arch/arm/plat-omap/include/plat/dma.h - kernel/mindspeed - Git at Google

 /*
  *  arch/arm/plat-omap/include/mach/dma.h
  *
  *  Copyright (C) 2003 Nokia Corporation
  *  Author: Juha Yrjölä <juha.yrjola@nokia.com>
  *
  * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  */
 #ifndef __ASM_ARCH_DMA_H
 #define __ASM_ARCH_DMA_H

 #include <linux/platform_device.h>

 /*
  * TODO: These dma channel defines should go away once all
  * the omap drivers hwmod adapted.
  */

 /* Move omap4 specific defines to dma-44xx.h */
 #include "dma-44xx.h"

 /* DMA channels for omap1 */
 #define OMAP_DMA_NO_DEVICE		0
 #define OMAP_DMA_MCSI1_TX		1
 #define OMAP_DMA_MCSI1_RX		2
 #define OMAP_DMA_I2C_RX			3
 #define OMAP_DMA_I2C_TX			4
 #define OMAP_DMA_EXT_NDMA_REQ		5
 #define OMAP_DMA_EXT_NDMA_REQ2		6
 #define OMAP_DMA_UWIRE_TX		7
 #define OMAP_DMA_MCBSP1_TX		8
 #define OMAP_DMA_MCBSP1_RX		9
 #define OMAP_DMA_MCBSP3_TX		10
 #define OMAP_DMA_MCBSP3_RX		11
 #define OMAP_DMA_UART1_TX		12
 #define OMAP_DMA_UART1_RX		13
 #define OMAP_DMA_UART2_TX		14
 #define OMAP_DMA_UART2_RX		15
 #define OMAP_DMA_MCBSP2_TX		16
 #define OMAP_DMA_MCBSP2_RX		17
 #define OMAP_DMA_UART3_TX		18
 #define OMAP_DMA_UART3_RX		19
 #define OMAP_DMA_CAMERA_IF_RX		20
 #define OMAP_DMA_MMC_TX			21
 #define OMAP_DMA_MMC_RX			22
 #define OMAP_DMA_NAND			23
 #define OMAP_DMA_IRQ_LCD_LINE		24
 #define OMAP_DMA_MEMORY_STICK		25
 #define OMAP_DMA_USB_W2FC_RX0		26
 #define OMAP_DMA_USB_W2FC_RX1		27
 #define OMAP_DMA_USB_W2FC_RX2		28
 #define OMAP_DMA_USB_W2FC_TX0		29
 #define OMAP_DMA_USB_W2FC_TX1		30
 #define OMAP_DMA_USB_W2FC_TX2		31

 /* These are only for 1610 */
 #define OMAP_DMA_CRYPTO_DES_IN		32
 #define OMAP_DMA_SPI_TX			33
 #define OMAP_DMA_SPI_RX			34
 #define OMAP_DMA_CRYPTO_HASH		35
 #define OMAP_DMA_CCP_ATTN		36
 #define OMAP_DMA_CCP_FIFO_NOT_EMPTY	37
 #define OMAP_DMA_CMT_APE_TX_CHAN_0	38
 #define OMAP_DMA_CMT_APE_RV_CHAN_0	39
 #define OMAP_DMA_CMT_APE_TX_CHAN_1	40
 #define OMAP_DMA_CMT_APE_RV_CHAN_1	41
 #define OMAP_DMA_CMT_APE_TX_CHAN_2	42
 #define OMAP_DMA_CMT_APE_RV_CHAN_2	43
 #define OMAP_DMA_CMT_APE_TX_CHAN_3	44
 #define OMAP_DMA_CMT_APE_RV_CHAN_3	45
 #define OMAP_DMA_CMT_APE_TX_CHAN_4	46
 #define OMAP_DMA_CMT_APE_RV_CHAN_4	47
 #define OMAP_DMA_CMT_APE_TX_CHAN_5	48
 #define OMAP_DMA_CMT_APE_RV_CHAN_5	49
 #define OMAP_DMA_CMT_APE_TX_CHAN_6	50
 #define OMAP_DMA_CMT_APE_RV_CHAN_6	51
 #define OMAP_DMA_CMT_APE_TX_CHAN_7	52
 #define OMAP_DMA_CMT_APE_RV_CHAN_7	53
 #define OMAP_DMA_MMC2_TX		54
 #define OMAP_DMA_MMC2_RX		55
 #define OMAP_DMA_CRYPTO_DES_OUT		56

 /* DMA channels for 24xx */
 #define OMAP24XX_DMA_NO_DEVICE		0
 #define OMAP24XX_DMA_XTI_DMA		1	/* S_DMA_0 */
 #define OMAP24XX_DMA_EXT_DMAREQ0	2	/* S_DMA_1 */
 #define OMAP24XX_DMA_EXT_DMAREQ1	3	/* S_DMA_2 */
 #define OMAP24XX_DMA_GPMC		4	/* S_DMA_3 */
 #define OMAP24XX_DMA_GFX		5	/* S_DMA_4 */
 #define OMAP24XX_DMA_DSS		6	/* S_DMA_5 */
 #define OMAP242X_DMA_VLYNQ_TX		7	/* S_DMA_6 */
 #define OMAP24XX_DMA_EXT_DMAREQ2	7	/* S_DMA_6 */
 #define OMAP24XX_DMA_CWT		8	/* S_DMA_7 */
 #define OMAP24XX_DMA_AES_TX		9	/* S_DMA_8 */
 #define OMAP24XX_DMA_AES_RX		10	/* S_DMA_9 */
 #define OMAP24XX_DMA_DES_TX		11	/* S_DMA_10 */
 #define OMAP24XX_DMA_DES_RX		12	/* S_DMA_11 */
 #define OMAP24XX_DMA_SHA1MD5_RX		13	/* S_DMA_12 */
 #define OMAP34XX_DMA_SHA2MD5_RX		13	/* S_DMA_12 */
 #define OMAP242X_DMA_EXT_DMAREQ2	14	/* S_DMA_13 */
 #define OMAP242X_DMA_EXT_DMAREQ3	15	/* S_DMA_14 */
 #define OMAP242X_DMA_EXT_DMAREQ4	16	/* S_DMA_15 */
 #define OMAP242X_DMA_EAC_AC_RD		17	/* S_DMA_16 */
 #define OMAP242X_DMA_EAC_AC_WR		18	/* S_DMA_17 */
 #define OMAP242X_DMA_EAC_MD_UL_RD	19	/* S_DMA_18 */
 #define OMAP242X_DMA_EAC_MD_UL_WR	20	/* S_DMA_19 */
 #define OMAP242X_DMA_EAC_MD_DL_RD	21	/* S_DMA_20 */
 #define OMAP242X_DMA_EAC_MD_DL_WR	22	/* S_DMA_21 */
 #define OMAP242X_DMA_EAC_BT_UL_RD	23	/* S_DMA_22 */
 #define OMAP242X_DMA_EAC_BT_UL_WR	24	/* S_DMA_23 */
 #define OMAP242X_DMA_EAC_BT_DL_RD	25	/* S_DMA_24 */
 #define OMAP242X_DMA_EAC_BT_DL_WR	26	/* S_DMA_25 */
 #define OMAP243X_DMA_EXT_DMAREQ3	14	/* S_DMA_13 */
 #define OMAP24XX_DMA_SPI3_TX0		15	/* S_DMA_14 */
 #define OMAP24XX_DMA_SPI3_RX0		16	/* S_DMA_15 */
 #define OMAP24XX_DMA_MCBSP3_TX		17	/* S_DMA_16 */
 #define OMAP24XX_DMA_MCBSP3_RX		18	/* S_DMA_17 */
 #define OMAP24XX_DMA_MCBSP4_TX		19	/* S_DMA_18 */
 #define OMAP24XX_DMA_MCBSP4_RX		20	/* S_DMA_19 */
 #define OMAP24XX_DMA_MCBSP5_TX		21	/* S_DMA_20 */
 #define OMAP24XX_DMA_MCBSP5_RX		22	/* S_DMA_21 */
 #define OMAP24XX_DMA_SPI3_TX1		23	/* S_DMA_22 */
 #define OMAP24XX_DMA_SPI3_RX1		24	/* S_DMA_23 */
 #define OMAP243X_DMA_EXT_DMAREQ4	25	/* S_DMA_24 */
 #define OMAP243X_DMA_EXT_DMAREQ5	26	/* S_DMA_25 */
 #define OMAP34XX_DMA_I2C3_TX		25	/* S_DMA_24 */
 #define OMAP34XX_DMA_I2C3_RX		26	/* S_DMA_25 */
 #define OMAP24XX_DMA_I2C1_TX		27	/* S_DMA_26 */
 #define OMAP24XX_DMA_I2C1_RX		28	/* S_DMA_27 */
 #define OMAP24XX_DMA_I2C2_TX		29	/* S_DMA_28 */
 #define OMAP24XX_DMA_I2C2_RX		30	/* S_DMA_29 */
 #define OMAP24XX_DMA_MCBSP1_TX		31	/* S_DMA_30 */
 #define OMAP24XX_DMA_MCBSP1_RX		32	/* S_DMA_31 */
 #define OMAP24XX_DMA_MCBSP2_TX		33	/* S_DMA_32 */
 #define OMAP24XX_DMA_MCBSP2_RX		34	/* S_DMA_33 */
 #define OMAP24XX_DMA_SPI1_TX0		35	/* S_DMA_34 */
 #define OMAP24XX_DMA_SPI1_RX0		36	/* S_DMA_35 */
 #define OMAP24XX_DMA_SPI1_TX1		37	/* S_DMA_36 */
 #define OMAP24XX_DMA_SPI1_RX1		38	/* S_DMA_37 */
 #define OMAP24XX_DMA_SPI1_TX2		39	/* S_DMA_38 */
 #define OMAP24XX_DMA_SPI1_RX2		40	/* S_DMA_39 */
 #define OMAP24XX_DMA_SPI1_TX3		41	/* S_DMA_40 */
 #define OMAP24XX_DMA_SPI1_RX3		42	/* S_DMA_41 */
 #define OMAP24XX_DMA_SPI2_TX0		43	/* S_DMA_42 */
 #define OMAP24XX_DMA_SPI2_RX0		44	/* S_DMA_43 */
 #define OMAP24XX_DMA_SPI2_TX1		45	/* S_DMA_44 */
 #define OMAP24XX_DMA_SPI2_RX1		46	/* S_DMA_45 */
 #define OMAP24XX_DMA_MMC2_TX		47	/* S_DMA_46 */
 #define OMAP24XX_DMA_MMC2_RX		48	/* S_DMA_47 */
 #define OMAP24XX_DMA_UART1_TX		49	/* S_DMA_48 */
 #define OMAP24XX_DMA_UART1_RX		50	/* S_DMA_49 */
 #define OMAP24XX_DMA_UART2_TX		51	/* S_DMA_50 */
 #define OMAP24XX_DMA_UART2_RX		52	/* S_DMA_51 */
 #define OMAP24XX_DMA_UART3_TX		53	/* S_DMA_52 */
 #define OMAP24XX_DMA_UART3_RX		54	/* S_DMA_53 */
 #define OMAP24XX_DMA_USB_W2FC_TX0	55	/* S_DMA_54 */
 #define OMAP24XX_DMA_USB_W2FC_RX0	56	/* S_DMA_55 */
 #define OMAP24XX_DMA_USB_W2FC_TX1	57	/* S_DMA_56 */
 #define OMAP24XX_DMA_USB_W2FC_RX1	58	/* S_DMA_57 */
 #define OMAP24XX_DMA_USB_W2FC_TX2	59	/* S_DMA_58 */
 #define OMAP24XX_DMA_USB_W2FC_RX2	60	/* S_DMA_59 */
 #define OMAP24XX_DMA_MMC1_TX		61	/* S_DMA_60 */
 #define OMAP24XX_DMA_MMC1_RX		62	/* S_DMA_61 */
 #define OMAP24XX_DMA_MS			63	/* S_DMA_62 */
 #define OMAP242X_DMA_EXT_DMAREQ5	64	/* S_DMA_63 */
 #define OMAP243X_DMA_EXT_DMAREQ6	64	/* S_DMA_63 */
 #define OMAP34XX_DMA_EXT_DMAREQ3	64	/* S_DMA_63 */
 #define OMAP34XX_DMA_AES2_TX		65	/* S_DMA_64 */
 #define OMAP34XX_DMA_AES2_RX		66	/* S_DMA_65 */
 #define OMAP34XX_DMA_DES2_TX		67	/* S_DMA_66 */
 #define OMAP34XX_DMA_DES2_RX		68	/* S_DMA_67 */
 #define OMAP34XX_DMA_SHA1MD5_RX		69	/* S_DMA_68 */
 #define OMAP34XX_DMA_SPI4_TX0		70	/* S_DMA_69 */
 #define OMAP34XX_DMA_SPI4_RX0		71	/* S_DMA_70 */
 #define OMAP34XX_DSS_DMA0		72	/* S_DMA_71 */
 #define OMAP34XX_DSS_DMA1		73	/* S_DMA_72 */
 #define OMAP34XX_DSS_DMA2		74	/* S_DMA_73 */
 #define OMAP34XX_DSS_DMA3		75	/* S_DMA_74 */
 #define OMAP34XX_DMA_MMC3_TX		77	/* S_DMA_76 */
 #define OMAP34XX_DMA_MMC3_RX		78	/* S_DMA_77 */
 #define OMAP34XX_DMA_USIM_TX		79	/* S_DMA_78 */
 #define OMAP34XX_DMA_USIM_RX		80	/* S_DMA_79 */

 #define OMAP36XX_DMA_UART4_TX		81	/* S_DMA_80 */
 #define OMAP36XX_DMA_UART4_RX		82	/* S_DMA_81 */

 /* Only for AM35xx */
 #define AM35XX_DMA_UART4_TX		54
 #define AM35XX_DMA_UART4_RX		55

 /*----------------------------------------------------------------------------*/

 #define OMAP1_DMA_TOUT_IRQ		(1 << 0)
 #define OMAP_DMA_DROP_IRQ		(1 << 1)
 #define OMAP_DMA_HALF_IRQ		(1 << 2)
 #define OMAP_DMA_FRAME_IRQ		(1 << 3)
 #define OMAP_DMA_LAST_IRQ		(1 << 4)
 #define OMAP_DMA_BLOCK_IRQ		(1 << 5)
 #define OMAP1_DMA_SYNC_IRQ		(1 << 6)
 #define OMAP2_DMA_PKT_IRQ		(1 << 7)
 #define OMAP2_DMA_TRANS_ERR_IRQ		(1 << 8)
 #define OMAP2_DMA_SECURE_ERR_IRQ	(1 << 9)
 #define OMAP2_DMA_SUPERVISOR_ERR_IRQ	(1 << 10)
 #define OMAP2_DMA_MISALIGNED_ERR_IRQ	(1 << 11)

 #define OMAP_DMA_CCR_EN			(1 << 7)
 #define OMAP_DMA_CCR_RD_ACTIVE		(1 << 9)
 #define OMAP_DMA_CCR_WR_ACTIVE		(1 << 10)
 #define OMAP_DMA_CCR_SEL_SRC_DST_SYNC	(1 << 24)
 #define OMAP_DMA_CCR_BUFFERING_DISABLE	(1 << 25)

 #define OMAP_DMA_DATA_TYPE_S8		0x00
 #define OMAP_DMA_DATA_TYPE_S16		0x01
 #define OMAP_DMA_DATA_TYPE_S32		0x02

 #define OMAP_DMA_SYNC_ELEMENT		0x00
 #define OMAP_DMA_SYNC_FRAME		0x01
 #define OMAP_DMA_SYNC_BLOCK		0x02
 #define OMAP_DMA_SYNC_PACKET		0x03

 #define OMAP_DMA_DST_SYNC_PREFETCH	0x02
 #define OMAP_DMA_SRC_SYNC		0x01
 #define OMAP_DMA_DST_SYNC		0x00

 #define OMAP_DMA_PORT_EMIFF		0x00
 #define OMAP_DMA_PORT_EMIFS		0x01
 #define OMAP_DMA_PORT_OCP_T1		0x02
 #define OMAP_DMA_PORT_TIPB		0x03
 #define OMAP_DMA_PORT_OCP_T2		0x04
 #define OMAP_DMA_PORT_MPUI		0x05

 #define OMAP_DMA_AMODE_CONSTANT		0x00
 #define OMAP_DMA_AMODE_POST_INC		0x01
 #define OMAP_DMA_AMODE_SINGLE_IDX	0x02
 #define OMAP_DMA_AMODE_DOUBLE_IDX	0x03

 #define DMA_DEFAULT_FIFO_DEPTH		0x10
 #define DMA_DEFAULT_ARB_RATE		0x01
 /* Pass THREAD_RESERVE ORed with THREAD_FIFO for tparams */
 #define DMA_THREAD_RESERVE_NORM		(0x00 << 12) /* Def */
 #define DMA_THREAD_RESERVE_ONET		(0x01 << 12)
 #define DMA_THREAD_RESERVE_TWOT		(0x02 << 12)
 #define DMA_THREAD_RESERVE_THREET	(0x03 << 12)
 #define DMA_THREAD_FIFO_NONE		(0x00 << 14) /* Def */
 #define DMA_THREAD_FIFO_75		(0x01 << 14)
 #define DMA_THREAD_FIFO_25		(0x02 << 14)
 #define DMA_THREAD_FIFO_50		(0x03 << 14)

 /* DMA4_OCP_SYSCONFIG bits */
 #define DMA_SYSCONFIG_MIDLEMODE_MASK		(3 << 12)
 #define DMA_SYSCONFIG_CLOCKACTIVITY_MASK	(3 << 8)
 #define DMA_SYSCONFIG_EMUFREE			(1 << 5)
 #define DMA_SYSCONFIG_SIDLEMODE_MASK		(3 << 3)
 #define DMA_SYSCONFIG_SOFTRESET			(1 << 2)
 #define DMA_SYSCONFIG_AUTOIDLE			(1 << 0)

 #define DMA_SYSCONFIG_MIDLEMODE(n)		((n) << 12)
 #define DMA_SYSCONFIG_SIDLEMODE(n)		((n) << 3)

 #define DMA_IDLEMODE_SMARTIDLE			0x2
 #define DMA_IDLEMODE_NO_IDLE			0x1
 #define DMA_IDLEMODE_FORCE_IDLE			0x0

 /* Chaining modes*/
 #ifndef CONFIG_ARCH_OMAP1
 #define OMAP_DMA_STATIC_CHAIN		0x1
 #define OMAP_DMA_DYNAMIC_CHAIN		0x2
 #define OMAP_DMA_CHAIN_ACTIVE		0x1
 #define OMAP_DMA_CHAIN_INACTIVE		0x0
 #endif

 #define DMA_CH_PRIO_HIGH		0x1
 #define DMA_CH_PRIO_LOW			0x0 /* Def */

 /* Errata handling */
 #define IS_DMA_ERRATA(id)		(errata & (id))
 #define SET_DMA_ERRATA(id)		(errata |= (id))

 #define DMA_ERRATA_IFRAME_BUFFERING	BIT(0x0)
 #define DMA_ERRATA_PARALLEL_CHANNELS	BIT(0x1)
 #define DMA_ERRATA_i378			BIT(0x2)
 #define DMA_ERRATA_i541			BIT(0x3)
 #define DMA_ERRATA_i88			BIT(0x4)
 #define DMA_ERRATA_3_3			BIT(0x5)
 #define DMA_ROMCODE_BUG			BIT(0x6)

 /* Attributes for OMAP DMA Contrller */
 #define DMA_LINKED_LCH			BIT(0x0)
 #define GLOBAL_PRIORITY			BIT(0x1)
 #define RESERVE_CHANNEL			BIT(0x2)
 #define IS_CSSA_32			BIT(0x3)
 #define IS_CDSA_32			BIT(0x4)
 #define IS_RW_PRIORITY			BIT(0x5)
 #define ENABLE_1510_MODE		BIT(0x6)
 #define SRC_PORT			BIT(0x7)
 #define DST_PORT			BIT(0x8)
 #define SRC_INDEX			BIT(0x9)
 #define DST_INDEX			BIT(0xA)
 #define IS_BURST_ONLY4			BIT(0xB)
 #define CLEAR_CSR_ON_READ		BIT(0xC)
 #define IS_WORD_16			BIT(0xD)

 enum omap_reg_offsets {

 GCR,		GSCR,		GRST1,		HW_ID,
 PCH2_ID,	PCH0_ID,	PCH1_ID,	PCHG_ID,
 PCHD_ID,	CAPS_0,		CAPS_1,		CAPS_2,
 CAPS_3,		CAPS_4,		PCH2_SR,	PCH0_SR,
 PCH1_SR,	PCHD_SR,	REVISION,	IRQSTATUS_L0,
 IRQSTATUS_L1,	IRQSTATUS_L2,	IRQSTATUS_L3,	IRQENABLE_L0,
 IRQENABLE_L1,	IRQENABLE_L2,	IRQENABLE_L3,	SYSSTATUS,
 OCP_SYSCONFIG,

 /* omap1+ specific */
 CPC, CCR2, LCH_CTRL,

 /* Common registers for all omap's */
 CSDP,		CCR,		CICR,		CSR,
 CEN,		CFN,		CSFI,		CSEI,
 CSAC,		CDAC,		CDEI,
 CDFI,		CLNK_CTRL,

 /* Channel specific registers */
 CSSA,		CDSA,		COLOR,
 CCEN,		CCFN,

 /* omap3630 and omap4 specific */
 CDP,		CNDP,		CCDN,

 };

 enum omap_dma_burst_mode {
 	OMAP_DMA_DATA_BURST_DIS = 0,
 	OMAP_DMA_DATA_BURST_4,
 	OMAP_DMA_DATA_BURST_8,
 	OMAP_DMA_DATA_BURST_16,
 };

 enum end_type {
 	OMAP_DMA_LITTLE_ENDIAN = 0,
 	OMAP_DMA_BIG_ENDIAN
 };

 enum omap_dma_color_mode {
 	OMAP_DMA_COLOR_DIS = 0,
 	OMAP_DMA_CONSTANT_FILL,
 	OMAP_DMA_TRANSPARENT_COPY
 };

 enum omap_dma_write_mode {
 	OMAP_DMA_WRITE_NON_POSTED = 0,
 	OMAP_DMA_WRITE_POSTED,
 	OMAP_DMA_WRITE_LAST_NON_POSTED
 };

 enum omap_dma_channel_mode {
 	OMAP_DMA_LCH_2D = 0,
 	OMAP_DMA_LCH_G,
 	OMAP_DMA_LCH_P,
 	OMAP_DMA_LCH_PD
 };

 struct omap_dma_channel_params {
 	int data_type;		/* data type 8,16,32 */
 	int elem_count;		/* number of elements in a frame */
 	int frame_count;	/* number of frames in a element */

 	int src_port;		/* Only on OMAP1 REVISIT: Is this needed? */
 	int src_amode;		/* constant, post increment, indexed,
 					double indexed */
 	unsigned long src_start;	/* source address : physical */
 	int src_ei;		/* source element index */
 	int src_fi;		/* source frame index */

 	int dst_port;		/* Only on OMAP1 REVISIT: Is this needed? */
 	int dst_amode;		/* constant, post increment, indexed,
 					double indexed */
 	unsigned long dst_start;	/* source address : physical */
 	int dst_ei;		/* source element index */
 	int dst_fi;		/* source frame index */

 	int trigger;		/* trigger attached if the channel is
 					synchronized */
 	int sync_mode;		/* sycn on element, frame , block or packet */
 	int src_or_dst_synch;	/* source synch(1) or destination synch(0) */

 	int ie;			/* interrupt enabled */

 	unsigned char read_prio;/* read priority */
 	unsigned char write_prio;/* write priority */

 #ifndef CONFIG_ARCH_OMAP1
 	enum omap_dma_burst_mode burst_mode; /* Burst mode 4/8/16 words */
 #endif
 };

 struct omap_dma_lch {
 	int next_lch;
 	int dev_id;
 	u16 saved_csr;
 	u16 enabled_irqs;
 	const char *dev_name;
 	void (*callback)(int lch, u16 ch_status, void *data);
 	void *data;
 	long flags;
 	/* required for Dynamic chaining */
 	int prev_linked_ch;
 	int next_linked_ch;
 	int state;
 	int chain_id;
 	int status;
 };

 struct omap_dma_dev_attr {
 	u32 dev_caps;
 	u16 lch_count;
 	u16 chan_count;
 	struct omap_dma_lch *chan;
 };

 /* System DMA platform data structure */
 struct omap_system_dma_plat_info {
 	struct omap_dma_dev_attr *dma_attr;
 	u32 errata;
 	void (*disable_irq_lch)(int lch);
 	void (*show_dma_caps)(void);
 	void (*clear_lch_regs)(int lch);
 	void (*clear_dma)(int lch);
 	void (*dma_write)(u32 val, int reg, int lch);
 	u32 (*dma_read)(int reg, int lch);
 };

 extern void omap_set_dma_priority(int lch, int dst_port, int priority);
 extern int omap_request_dma(int dev_id, const char *dev_name,
 			void (*callback)(int lch, u16 ch_status, void *data),
 			void *data, int *dma_ch);
 extern void omap_enable_dma_irq(int ch, u16 irq_bits);
 extern void omap_disable_dma_irq(int ch, u16 irq_bits);
 extern void omap_free_dma(int ch);
 extern void omap_start_dma(int lch);
 extern void omap_stop_dma(int lch);
 extern void omap_set_dma_transfer_params(int lch, int data_type,
 					 int elem_count, int frame_count,
 					 int sync_mode,
 					 int dma_trigger, int src_or_dst_synch);
 extern void omap_set_dma_color_mode(int lch, enum omap_dma_color_mode mode,
 				    u32 color);
 extern void omap_set_dma_write_mode(int lch, enum omap_dma_write_mode mode);
 extern void omap_set_dma_channel_mode(int lch, enum omap_dma_channel_mode mode);

 extern void omap_set_dma_src_params(int lch, int src_port, int src_amode,
 				    unsigned long src_start,
 				    int src_ei, int src_fi);
 extern void omap_set_dma_src_index(int lch, int eidx, int fidx);
 extern void omap_set_dma_src_data_pack(int lch, int enable);
 extern void omap_set_dma_src_burst_mode(int lch,
 					enum omap_dma_burst_mode burst_mode);

 extern void omap_set_dma_dest_params(int lch, int dest_port, int dest_amode,
 				     unsigned long dest_start,
 				     int dst_ei, int dst_fi);
 extern void omap_set_dma_dest_index(int lch, int eidx, int fidx);
 extern void omap_set_dma_dest_data_pack(int lch, int enable);
 extern void omap_set_dma_dest_burst_mode(int lch,
 					 enum omap_dma_burst_mode burst_mode);

 extern void omap_set_dma_params(int lch,
 				struct omap_dma_channel_params *params);

 extern void omap_dma_link_lch(int lch_head, int lch_queue);
 extern void omap_dma_unlink_lch(int lch_head, int lch_queue);

 extern int omap_set_dma_callback(int lch,
 			void (*callback)(int lch, u16 ch_status, void *data),
 			void *data);
 extern dma_addr_t omap_get_dma_src_pos(int lch);
 extern dma_addr_t omap_get_dma_dst_pos(int lch);
 extern void omap_clear_dma(int lch);
 extern int omap_get_dma_active_status(int lch);
 extern int omap_dma_running(void);
 extern void omap_dma_set_global_params(int arb_rate, int max_fifo_depth,
 				       int tparams);
 extern int omap_dma_set_prio_lch(int lch, unsigned char read_prio,
 				 unsigned char write_prio);
 extern void omap_set_dma_dst_endian_type(int lch, enum end_type etype);
 extern void omap_set_dma_src_endian_type(int lch, enum end_type etype);
 extern int omap_get_dma_index(int lch, int *ei, int *fi);

 void omap_dma_global_context_save(void);
 void omap_dma_global_context_restore(void);

 extern void omap_dma_disable_irq(int lch);

 /* Chaining APIs */
 #ifndef CONFIG_ARCH_OMAP1
 extern int omap_request_dma_chain(int dev_id, const char *dev_name,
 				  void (*callback) (int lch, u16 ch_status,
 						    void *data),
 				  int *chain_id, int no_of_chans,
 				  int chain_mode,
 				  struct omap_dma_channel_params params);
 extern int omap_free_dma_chain(int chain_id);
 extern int omap_dma_chain_a_transfer(int chain_id, int src_start,
 				     int dest_start, int elem_count,
 				     int frame_count, void *callbk_data);
 extern int omap_start_dma_chain_transfers(int chain_id);
 extern int omap_stop_dma_chain_transfers(int chain_id);
 extern int omap_get_dma_chain_index(int chain_id, int *ei, int *fi);
 extern int omap_get_dma_chain_dst_pos(int chain_id);
 extern int omap_get_dma_chain_src_pos(int chain_id);

 extern int omap_modify_dma_chain_params(int chain_id,
 					struct omap_dma_channel_params params);
 extern int omap_dma_chain_status(int chain_id);
 #endif

 #if defined(CONFIG_ARCH_OMAP1) && defined(CONFIG_FB_OMAP)
 #include <mach/lcd_dma.h>
 #else
 static inline int omap_lcd_dma_running(void)
 {
 	return 0;
 }
 #endif

 #endif /* __ASM_ARCH_DMA_H */
	/*
	* arch/arm/plat-omap/include/mach/dma.h
	*
	* Copyright (C) 2003 Nokia Corporation
	* Author: Juha Yrjölä <juha.yrjola@nokia.com>
	*
	* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	*/
	#ifndef __ASM_ARCH_DMA_H
	#define __ASM_ARCH_DMA_H

	#include <linux/platform_device.h>

	/*
	* TODO: These dma channel defines should go away once all
	* the omap drivers hwmod adapted.
	*/

	/* Move omap4 specific defines to dma-44xx.h */
	#include "dma-44xx.h"

	/* DMA channels for omap1 */
	#define OMAP_DMA_NO_DEVICE 0
	#define OMAP_DMA_MCSI1_TX 1
	#define OMAP_DMA_MCSI1_RX 2
	#define OMAP_DMA_I2C_RX 3
	#define OMAP_DMA_I2C_TX 4
	#define OMAP_DMA_EXT_NDMA_REQ 5
	#define OMAP_DMA_EXT_NDMA_REQ2 6
	#define OMAP_DMA_UWIRE_TX 7
	#define OMAP_DMA_MCBSP1_TX 8
	#define OMAP_DMA_MCBSP1_RX 9
	#define OMAP_DMA_MCBSP3_TX 10
	#define OMAP_DMA_MCBSP3_RX 11
	#define OMAP_DMA_UART1_TX 12
	#define OMAP_DMA_UART1_RX 13
	#define OMAP_DMA_UART2_TX 14
	#define OMAP_DMA_UART2_RX 15
	#define OMAP_DMA_MCBSP2_TX 16
	#define OMAP_DMA_MCBSP2_RX 17
	#define OMAP_DMA_UART3_TX 18
	#define OMAP_DMA_UART3_RX 19
	#define OMAP_DMA_CAMERA_IF_RX 20
	#define OMAP_DMA_MMC_TX 21
	#define OMAP_DMA_MMC_RX 22
	#define OMAP_DMA_NAND 23
	#define OMAP_DMA_IRQ_LCD_LINE 24
	#define OMAP_DMA_MEMORY_STICK 25
	#define OMAP_DMA_USB_W2FC_RX0 26
	#define OMAP_DMA_USB_W2FC_RX1 27
	#define OMAP_DMA_USB_W2FC_RX2 28
	#define OMAP_DMA_USB_W2FC_TX0 29
	#define OMAP_DMA_USB_W2FC_TX1 30
	#define OMAP_DMA_USB_W2FC_TX2 31

	/* These are only for 1610 */
	#define OMAP_DMA_CRYPTO_DES_IN 32
	#define OMAP_DMA_SPI_TX 33
	#define OMAP_DMA_SPI_RX 34
	#define OMAP_DMA_CRYPTO_HASH 35
	#define OMAP_DMA_CCP_ATTN 36
	#define OMAP_DMA_CCP_FIFO_NOT_EMPTY 37
	#define OMAP_DMA_CMT_APE_TX_CHAN_0 38
	#define OMAP_DMA_CMT_APE_RV_CHAN_0 39
	#define OMAP_DMA_CMT_APE_TX_CHAN_1 40
	#define OMAP_DMA_CMT_APE_RV_CHAN_1 41
	#define OMAP_DMA_CMT_APE_TX_CHAN_2 42
	#define OMAP_DMA_CMT_APE_RV_CHAN_2 43
	#define OMAP_DMA_CMT_APE_TX_CHAN_3 44
	#define OMAP_DMA_CMT_APE_RV_CHAN_3 45
	#define OMAP_DMA_CMT_APE_TX_CHAN_4 46
	#define OMAP_DMA_CMT_APE_RV_CHAN_4 47
	#define OMAP_DMA_CMT_APE_TX_CHAN_5 48
	#define OMAP_DMA_CMT_APE_RV_CHAN_5 49
	#define OMAP_DMA_CMT_APE_TX_CHAN_6 50
	#define OMAP_DMA_CMT_APE_RV_CHAN_6 51
	#define OMAP_DMA_CMT_APE_TX_CHAN_7 52
	#define OMAP_DMA_CMT_APE_RV_CHAN_7 53
	#define OMAP_DMA_MMC2_TX 54
	#define OMAP_DMA_MMC2_RX 55
	#define OMAP_DMA_CRYPTO_DES_OUT 56

	/* DMA channels for 24xx */
	#define OMAP24XX_DMA_NO_DEVICE 0
	#define OMAP24XX_DMA_XTI_DMA 1 /* S_DMA_0 */
	#define OMAP24XX_DMA_EXT_DMAREQ0 2 /* S_DMA_1 */
	#define OMAP24XX_DMA_EXT_DMAREQ1 3 /* S_DMA_2 */
	#define OMAP24XX_DMA_GPMC 4 /* S_DMA_3 */
	#define OMAP24XX_DMA_GFX 5 /* S_DMA_4 */
	#define OMAP24XX_DMA_DSS 6 /* S_DMA_5 */
	#define OMAP242X_DMA_VLYNQ_TX 7 /* S_DMA_6 */
	#define OMAP24XX_DMA_EXT_DMAREQ2 7 /* S_DMA_6 */
	#define OMAP24XX_DMA_CWT 8 /* S_DMA_7 */
	#define OMAP24XX_DMA_AES_TX 9 /* S_DMA_8 */
	#define OMAP24XX_DMA_AES_RX 10 /* S_DMA_9 */
	#define OMAP24XX_DMA_DES_TX 11 /* S_DMA_10 */
	#define OMAP24XX_DMA_DES_RX 12 /* S_DMA_11 */
	#define OMAP24XX_DMA_SHA1MD5_RX 13 /* S_DMA_12 */
	#define OMAP34XX_DMA_SHA2MD5_RX 13 /* S_DMA_12 */
	#define OMAP242X_DMA_EXT_DMAREQ2 14 /* S_DMA_13 */
	#define OMAP242X_DMA_EXT_DMAREQ3 15 /* S_DMA_14 */
	#define OMAP242X_DMA_EXT_DMAREQ4 16 /* S_DMA_15 */
	#define OMAP242X_DMA_EAC_AC_RD 17 /* S_DMA_16 */
	#define OMAP242X_DMA_EAC_AC_WR 18 /* S_DMA_17 */
	#define OMAP242X_DMA_EAC_MD_UL_RD 19 /* S_DMA_18 */
	#define OMAP242X_DMA_EAC_MD_UL_WR 20 /* S_DMA_19 */
	#define OMAP242X_DMA_EAC_MD_DL_RD 21 /* S_DMA_20 */
	#define OMAP242X_DMA_EAC_MD_DL_WR 22 /* S_DMA_21 */
	#define OMAP242X_DMA_EAC_BT_UL_RD 23 /* S_DMA_22 */
	#define OMAP242X_DMA_EAC_BT_UL_WR 24 /* S_DMA_23 */
	#define OMAP242X_DMA_EAC_BT_DL_RD 25 /* S_DMA_24 */
	#define OMAP242X_DMA_EAC_BT_DL_WR 26 /* S_DMA_25 */
	#define OMAP243X_DMA_EXT_DMAREQ3 14 /* S_DMA_13 */
	#define OMAP24XX_DMA_SPI3_TX0 15 /* S_DMA_14 */
	#define OMAP24XX_DMA_SPI3_RX0 16 /* S_DMA_15 */
	#define OMAP24XX_DMA_MCBSP3_TX 17 /* S_DMA_16 */
	#define OMAP24XX_DMA_MCBSP3_RX 18 /* S_DMA_17 */
	#define OMAP24XX_DMA_MCBSP4_TX 19 /* S_DMA_18 */
	#define OMAP24XX_DMA_MCBSP4_RX 20 /* S_DMA_19 */
	#define OMAP24XX_DMA_MCBSP5_TX 21 /* S_DMA_20 */
	#define OMAP24XX_DMA_MCBSP5_RX 22 /* S_DMA_21 */
	#define OMAP24XX_DMA_SPI3_TX1 23 /* S_DMA_22 */
	#define OMAP24XX_DMA_SPI3_RX1 24 /* S_DMA_23 */
	#define OMAP243X_DMA_EXT_DMAREQ4 25 /* S_DMA_24 */
	#define OMAP243X_DMA_EXT_DMAREQ5 26 /* S_DMA_25 */
	#define OMAP34XX_DMA_I2C3_TX 25 /* S_DMA_24 */
	#define OMAP34XX_DMA_I2C3_RX 26 /* S_DMA_25 */
	#define OMAP24XX_DMA_I2C1_TX 27 /* S_DMA_26 */
	#define OMAP24XX_DMA_I2C1_RX 28 /* S_DMA_27 */
	#define OMAP24XX_DMA_I2C2_TX 29 /* S_DMA_28 */
	#define OMAP24XX_DMA_I2C2_RX 30 /* S_DMA_29 */
	#define OMAP24XX_DMA_MCBSP1_TX 31 /* S_DMA_30 */
	#define OMAP24XX_DMA_MCBSP1_RX 32 /* S_DMA_31 */
	#define OMAP24XX_DMA_MCBSP2_TX 33 /* S_DMA_32 */
	#define OMAP24XX_DMA_MCBSP2_RX 34 /* S_DMA_33 */
	#define OMAP24XX_DMA_SPI1_TX0 35 /* S_DMA_34 */
	#define OMAP24XX_DMA_SPI1_RX0 36 /* S_DMA_35 */
	#define OMAP24XX_DMA_SPI1_TX1 37 /* S_DMA_36 */
	#define OMAP24XX_DMA_SPI1_RX1 38 /* S_DMA_37 */
	#define OMAP24XX_DMA_SPI1_TX2 39 /* S_DMA_38 */
	#define OMAP24XX_DMA_SPI1_RX2 40 /* S_DMA_39 */
	#define OMAP24XX_DMA_SPI1_TX3 41 /* S_DMA_40 */
	#define OMAP24XX_DMA_SPI1_RX3 42 /* S_DMA_41 */
	#define OMAP24XX_DMA_SPI2_TX0 43 /* S_DMA_42 */
	#define OMAP24XX_DMA_SPI2_RX0 44 /* S_DMA_43 */
	#define OMAP24XX_DMA_SPI2_TX1 45 /* S_DMA_44 */
	#define OMAP24XX_DMA_SPI2_RX1 46 /* S_DMA_45 */
	#define OMAP24XX_DMA_MMC2_TX 47 /* S_DMA_46 */
	#define OMAP24XX_DMA_MMC2_RX 48 /* S_DMA_47 */
	#define OMAP24XX_DMA_UART1_TX 49 /* S_DMA_48 */
	#define OMAP24XX_DMA_UART1_RX 50 /* S_DMA_49 */
	#define OMAP24XX_DMA_UART2_TX 51 /* S_DMA_50 */
	#define OMAP24XX_DMA_UART2_RX 52 /* S_DMA_51 */
	#define OMAP24XX_DMA_UART3_TX 53 /* S_DMA_52 */
	#define OMAP24XX_DMA_UART3_RX 54 /* S_DMA_53 */
	#define OMAP24XX_DMA_USB_W2FC_TX0 55 /* S_DMA_54 */
	#define OMAP24XX_DMA_USB_W2FC_RX0 56 /* S_DMA_55 */
	#define OMAP24XX_DMA_USB_W2FC_TX1 57 /* S_DMA_56 */
	#define OMAP24XX_DMA_USB_W2FC_RX1 58 /* S_DMA_57 */
	#define OMAP24XX_DMA_USB_W2FC_TX2 59 /* S_DMA_58 */
	#define OMAP24XX_DMA_USB_W2FC_RX2 60 /* S_DMA_59 */
	#define OMAP24XX_DMA_MMC1_TX 61 /* S_DMA_60 */
	#define OMAP24XX_DMA_MMC1_RX 62 /* S_DMA_61 */
	#define OMAP24XX_DMA_MS 63 /* S_DMA_62 */
	#define OMAP242X_DMA_EXT_DMAREQ5 64 /* S_DMA_63 */
	#define OMAP243X_DMA_EXT_DMAREQ6 64 /* S_DMA_63 */
	#define OMAP34XX_DMA_EXT_DMAREQ3 64 /* S_DMA_63 */
	#define OMAP34XX_DMA_AES2_TX 65 /* S_DMA_64 */
	#define OMAP34XX_DMA_AES2_RX 66 /* S_DMA_65 */
	#define OMAP34XX_DMA_DES2_TX 67 /* S_DMA_66 */
	#define OMAP34XX_DMA_DES2_RX 68 /* S_DMA_67 */
	#define OMAP34XX_DMA_SHA1MD5_RX 69 /* S_DMA_68 */
	#define OMAP34XX_DMA_SPI4_TX0 70 /* S_DMA_69 */
	#define OMAP34XX_DMA_SPI4_RX0 71 /* S_DMA_70 */
	#define OMAP34XX_DSS_DMA0 72 /* S_DMA_71 */
	#define OMAP34XX_DSS_DMA1 73 /* S_DMA_72 */
	#define OMAP34XX_DSS_DMA2 74 /* S_DMA_73 */
	#define OMAP34XX_DSS_DMA3 75 /* S_DMA_74 */
	#define OMAP34XX_DMA_MMC3_TX 77 /* S_DMA_76 */
	#define OMAP34XX_DMA_MMC3_RX 78 /* S_DMA_77 */
	#define OMAP34XX_DMA_USIM_TX 79 /* S_DMA_78 */
	#define OMAP34XX_DMA_USIM_RX 80 /* S_DMA_79 */

	#define OMAP36XX_DMA_UART4_TX 81 /* S_DMA_80 */
	#define OMAP36XX_DMA_UART4_RX 82 /* S_DMA_81 */

	/* Only for AM35xx */
	#define AM35XX_DMA_UART4_TX 54
	#define AM35XX_DMA_UART4_RX 55

	/----------------------------------------------------------------------------/

	#define OMAP1_DMA_TOUT_IRQ (1 << 0)
	#define OMAP_DMA_DROP_IRQ (1 << 1)
	#define OMAP_DMA_HALF_IRQ (1 << 2)
	#define OMAP_DMA_FRAME_IRQ (1 << 3)
	#define OMAP_DMA_LAST_IRQ (1 << 4)
	#define OMAP_DMA_BLOCK_IRQ (1 << 5)
	#define OMAP1_DMA_SYNC_IRQ (1 << 6)
	#define OMAP2_DMA_PKT_IRQ (1 << 7)
	#define OMAP2_DMA_TRANS_ERR_IRQ (1 << 8)
	#define OMAP2_DMA_SECURE_ERR_IRQ (1 << 9)
	#define OMAP2_DMA_SUPERVISOR_ERR_IRQ (1 << 10)
	#define OMAP2_DMA_MISALIGNED_ERR_IRQ (1 << 11)

	#define OMAP_DMA_CCR_EN (1 << 7)
	#define OMAP_DMA_CCR_RD_ACTIVE (1 << 9)
	#define OMAP_DMA_CCR_WR_ACTIVE (1 << 10)
	#define OMAP_DMA_CCR_SEL_SRC_DST_SYNC (1 << 24)
	#define OMAP_DMA_CCR_BUFFERING_DISABLE (1 << 25)

	#define OMAP_DMA_DATA_TYPE_S8 0x00
	#define OMAP_DMA_DATA_TYPE_S16 0x01
	#define OMAP_DMA_DATA_TYPE_S32 0x02

	#define OMAP_DMA_SYNC_ELEMENT 0x00
	#define OMAP_DMA_SYNC_FRAME 0x01
	#define OMAP_DMA_SYNC_BLOCK 0x02
	#define OMAP_DMA_SYNC_PACKET 0x03

	#define OMAP_DMA_DST_SYNC_PREFETCH 0x02
	#define OMAP_DMA_SRC_SYNC 0x01
	#define OMAP_DMA_DST_SYNC 0x00

	#define OMAP_DMA_PORT_EMIFF 0x00
	#define OMAP_DMA_PORT_EMIFS 0x01
	#define OMAP_DMA_PORT_OCP_T1 0x02
	#define OMAP_DMA_PORT_TIPB 0x03
	#define OMAP_DMA_PORT_OCP_T2 0x04
	#define OMAP_DMA_PORT_MPUI 0x05

	#define OMAP_DMA_AMODE_CONSTANT 0x00
	#define OMAP_DMA_AMODE_POST_INC 0x01
	#define OMAP_DMA_AMODE_SINGLE_IDX 0x02
	#define OMAP_DMA_AMODE_DOUBLE_IDX 0x03

	#define DMA_DEFAULT_FIFO_DEPTH 0x10
	#define DMA_DEFAULT_ARB_RATE 0x01
	/* Pass THREAD_RESERVE ORed with THREAD_FIFO for tparams */
	#define DMA_THREAD_RESERVE_NORM (0x00 << 12) /* Def */
	#define DMA_THREAD_RESERVE_ONET (0x01 << 12)
	#define DMA_THREAD_RESERVE_TWOT (0x02 << 12)
	#define DMA_THREAD_RESERVE_THREET (0x03 << 12)
	#define DMA_THREAD_FIFO_NONE (0x00 << 14) /* Def */
	#define DMA_THREAD_FIFO_75 (0x01 << 14)
	#define DMA_THREAD_FIFO_25 (0x02 << 14)
	#define DMA_THREAD_FIFO_50 (0x03 << 14)

	/* DMA4_OCP_SYSCONFIG bits */
	#define DMA_SYSCONFIG_MIDLEMODE_MASK (3 << 12)
	#define DMA_SYSCONFIG_CLOCKACTIVITY_MASK (3 << 8)
	#define DMA_SYSCONFIG_EMUFREE (1 << 5)
	#define DMA_SYSCONFIG_SIDLEMODE_MASK (3 << 3)
	#define DMA_SYSCONFIG_SOFTRESET (1 << 2)
	#define DMA_SYSCONFIG_AUTOIDLE (1 << 0)

	#define DMA_SYSCONFIG_MIDLEMODE(n) ((n) << 12)
	#define DMA_SYSCONFIG_SIDLEMODE(n) ((n) << 3)

	#define DMA_IDLEMODE_SMARTIDLE 0x2
	#define DMA_IDLEMODE_NO_IDLE 0x1
	#define DMA_IDLEMODE_FORCE_IDLE 0x0

	/* Chaining modes*/
	#ifndef CONFIG_ARCH_OMAP1
	#define OMAP_DMA_STATIC_CHAIN 0x1
	#define OMAP_DMA_DYNAMIC_CHAIN 0x2
	#define OMAP_DMA_CHAIN_ACTIVE 0x1
	#define OMAP_DMA_CHAIN_INACTIVE 0x0
	#endif

	#define DMA_CH_PRIO_HIGH 0x1
	#define DMA_CH_PRIO_LOW 0x0 /* Def */

	/* Errata handling */
	#define IS_DMA_ERRATA(id) (errata & (id))
	#define SET_DMA_ERRATA(id) (errata \|= (id))

	#define DMA_ERRATA_IFRAME_BUFFERING BIT(0x0)
	#define DMA_ERRATA_PARALLEL_CHANNELS BIT(0x1)
	#define DMA_ERRATA_i378 BIT(0x2)
	#define DMA_ERRATA_i541 BIT(0x3)
	#define DMA_ERRATA_i88 BIT(0x4)
	#define DMA_ERRATA_3_3 BIT(0x5)
	#define DMA_ROMCODE_BUG BIT(0x6)

	/* Attributes for OMAP DMA Contrller */
	#define DMA_LINKED_LCH BIT(0x0)
	#define GLOBAL_PRIORITY BIT(0x1)
	#define RESERVE_CHANNEL BIT(0x2)
	#define IS_CSSA_32 BIT(0x3)
	#define IS_CDSA_32 BIT(0x4)
	#define IS_RW_PRIORITY BIT(0x5)
	#define ENABLE_1510_MODE BIT(0x6)
	#define SRC_PORT BIT(0x7)
	#define DST_PORT BIT(0x8)
	#define SRC_INDEX BIT(0x9)
	#define DST_INDEX BIT(0xA)
	#define IS_BURST_ONLY4 BIT(0xB)
	#define CLEAR_CSR_ON_READ BIT(0xC)
	#define IS_WORD_16 BIT(0xD)

	enum omap_reg_offsets {

	GCR, GSCR, GRST1, HW_ID,
	PCH2_ID, PCH0_ID, PCH1_ID, PCHG_ID,
	PCHD_ID, CAPS_0, CAPS_1, CAPS_2,
	CAPS_3, CAPS_4, PCH2_SR, PCH0_SR,
	PCH1_SR, PCHD_SR, REVISION, IRQSTATUS_L0,
	IRQSTATUS_L1, IRQSTATUS_L2, IRQSTATUS_L3, IRQENABLE_L0,
	IRQENABLE_L1, IRQENABLE_L2, IRQENABLE_L3, SYSSTATUS,
	OCP_SYSCONFIG,

	/* omap1+ specific */
	CPC, CCR2, LCH_CTRL,

	/* Common registers for all omap's */
	CSDP, CCR, CICR, CSR,
	CEN, CFN, CSFI, CSEI,
	CSAC, CDAC, CDEI,
	CDFI, CLNK_CTRL,

	/* Channel specific registers */
	CSSA, CDSA, COLOR,
	CCEN, CCFN,

	/* omap3630 and omap4 specific */
	CDP, CNDP, CCDN,

	};

	enum omap_dma_burst_mode {
	OMAP_DMA_DATA_BURST_DIS = 0,
	OMAP_DMA_DATA_BURST_4,
	OMAP_DMA_DATA_BURST_8,
	OMAP_DMA_DATA_BURST_16,
	};

	enum end_type {
	OMAP_DMA_LITTLE_ENDIAN = 0,
	OMAP_DMA_BIG_ENDIAN
	};

	enum omap_dma_color_mode {
	OMAP_DMA_COLOR_DIS = 0,
	OMAP_DMA_CONSTANT_FILL,
	OMAP_DMA_TRANSPARENT_COPY
	};

	enum omap_dma_write_mode {
	OMAP_DMA_WRITE_NON_POSTED = 0,
	OMAP_DMA_WRITE_POSTED,
	OMAP_DMA_WRITE_LAST_NON_POSTED
	};

	enum omap_dma_channel_mode {
	OMAP_DMA_LCH_2D = 0,
	OMAP_DMA_LCH_G,
	OMAP_DMA_LCH_P,
	OMAP_DMA_LCH_PD
	};

	struct omap_dma_channel_params {
	int data_type; /* data type 8,16,32 */
	int elem_count; /* number of elements in a frame */
	int frame_count; /* number of frames in a element */

	int src_port; /* Only on OMAP1 REVISIT: Is this needed? */
	int src_amode; /* constant, post increment, indexed,
	double indexed */
	unsigned long src_start; /* source address : physical */
	int src_ei; /* source element index */
	int src_fi; /* source frame index */

	int dst_port; /* Only on OMAP1 REVISIT: Is this needed? */
	int dst_amode; /* constant, post increment, indexed,
	double indexed */
	unsigned long dst_start; /* source address : physical */
	int dst_ei; /* source element index */
	int dst_fi; /* source frame index */

	int trigger; /* trigger attached if the channel is
	synchronized */
	int sync_mode; /* sycn on element, frame , block or packet */
	int src_or_dst_synch; /* source synch(1) or destination synch(0) */

	int ie; /* interrupt enabled */

	unsigned char read_prio;/* read priority */
	unsigned char write_prio;/* write priority */

	#ifndef CONFIG_ARCH_OMAP1
	enum omap_dma_burst_mode burst_mode; /* Burst mode 4/8/16 words */
	#endif
	};

	struct omap_dma_lch {
	int next_lch;
	int dev_id;
	u16 saved_csr;
	u16 enabled_irqs;
	const char *dev_name;
	void (callback)(int lch, u16 ch_status, void data);
	void *data;
	long flags;
	/* required for Dynamic chaining */
	int prev_linked_ch;
	int next_linked_ch;
	int state;
	int chain_id;
	int status;
	};

	struct omap_dma_dev_attr {
	u32 dev_caps;
	u16 lch_count;
	u16 chan_count;
	struct omap_dma_lch *chan;
	};

	/* System DMA platform data structure */
	struct omap_system_dma_plat_info {
	struct omap_dma_dev_attr *dma_attr;
	u32 errata;
	void (*disable_irq_lch)(int lch);
	void (*show_dma_caps)(void);
	void (*clear_lch_regs)(int lch);
	void (*clear_dma)(int lch);
	void (*dma_write)(u32 val, int reg, int lch);
	u32 (*dma_read)(int reg, int lch);
	};

	extern void omap_set_dma_priority(int lch, int dst_port, int priority);
	extern int omap_request_dma(int dev_id, const char *dev_name,
	void (callback)(int lch, u16 ch_status, void data),
	void data, int dma_ch);
	extern void omap_enable_dma_irq(int ch, u16 irq_bits);
	extern void omap_disable_dma_irq(int ch, u16 irq_bits);
	extern void omap_free_dma(int ch);
	extern void omap_start_dma(int lch);
	extern void omap_stop_dma(int lch);
	extern void omap_set_dma_transfer_params(int lch, int data_type,
	int elem_count, int frame_count,
	int sync_mode,
	int dma_trigger, int src_or_dst_synch);
	extern void omap_set_dma_color_mode(int lch, enum omap_dma_color_mode mode,
	u32 color);
	extern void omap_set_dma_write_mode(int lch, enum omap_dma_write_mode mode);
	extern void omap_set_dma_channel_mode(int lch, enum omap_dma_channel_mode mode);

	extern void omap_set_dma_src_params(int lch, int src_port, int src_amode,
	unsigned long src_start,
	int src_ei, int src_fi);
	extern void omap_set_dma_src_index(int lch, int eidx, int fidx);
	extern void omap_set_dma_src_data_pack(int lch, int enable);
	extern void omap_set_dma_src_burst_mode(int lch,
	enum omap_dma_burst_mode burst_mode);

	extern void omap_set_dma_dest_params(int lch, int dest_port, int dest_amode,
	unsigned long dest_start,
	int dst_ei, int dst_fi);
	extern void omap_set_dma_dest_index(int lch, int eidx, int fidx);
	extern void omap_set_dma_dest_data_pack(int lch, int enable);
	extern void omap_set_dma_dest_burst_mode(int lch,
	enum omap_dma_burst_mode burst_mode);

	extern void omap_set_dma_params(int lch,
	struct omap_dma_channel_params *params);

	extern void omap_dma_link_lch(int lch_head, int lch_queue);
	extern void omap_dma_unlink_lch(int lch_head, int lch_queue);

	extern int omap_set_dma_callback(int lch,
	void (callback)(int lch, u16 ch_status, void data),
	void *data);
	extern dma_addr_t omap_get_dma_src_pos(int lch);
	extern dma_addr_t omap_get_dma_dst_pos(int lch);
	extern void omap_clear_dma(int lch);
	extern int omap_get_dma_active_status(int lch);
	extern int omap_dma_running(void);
	extern void omap_dma_set_global_params(int arb_rate, int max_fifo_depth,
	int tparams);
	extern int omap_dma_set_prio_lch(int lch, unsigned char read_prio,
	unsigned char write_prio);
	extern void omap_set_dma_dst_endian_type(int lch, enum end_type etype);
	extern void omap_set_dma_src_endian_type(int lch, enum end_type etype);
	extern int omap_get_dma_index(int lch, int ei, int fi);

	void omap_dma_global_context_save(void);
	void omap_dma_global_context_restore(void);

	extern void omap_dma_disable_irq(int lch);

	/* Chaining APIs */
	#ifndef CONFIG_ARCH_OMAP1
	extern int omap_request_dma_chain(int dev_id, const char *dev_name,
	void (*callback) (int lch, u16 ch_status,
	void *data),
	int *chain_id, int no_of_chans,
	int chain_mode,
	struct omap_dma_channel_params params);
	extern int omap_free_dma_chain(int chain_id);
	extern int omap_dma_chain_a_transfer(int chain_id, int src_start,
	int dest_start, int elem_count,
	int frame_count, void *callbk_data);
	extern int omap_start_dma_chain_transfers(int chain_id);
	extern int omap_stop_dma_chain_transfers(int chain_id);
	extern int omap_get_dma_chain_index(int chain_id, int ei, int fi);
	extern int omap_get_dma_chain_dst_pos(int chain_id);
	extern int omap_get_dma_chain_src_pos(int chain_id);

	extern int omap_modify_dma_chain_params(int chain_id,
	struct omap_dma_channel_params params);
	extern int omap_dma_chain_status(int chain_id);
	#endif

	#if defined(CONFIG_ARCH_OMAP1) && defined(CONFIG_FB_OMAP)
	#include <mach/lcd_dma.h>
	#else
	static inline int omap_lcd_dma_running(void)
	{
	return 0;
	}
	#endif

	#endif /* __ASM_ARCH_DMA_H */