drivers/usb/gadget/udc/amd5536udc.h - arm/linux - Git at Google

 /*
  * amd5536.h -- header for AMD 5536 UDC high/full speed USB device controller
  *
  * Copyright (C) 2007 AMD (http://www.amd.com)
  * Author: Thomas Dahlmann
  *
  * 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.
  */

 #ifndef AMD5536UDC_H
 #define AMD5536UDC_H

 /* debug control */
 /* #define UDC_VERBOSE */

 #include <linux/extcon.h>
 #include <linux/usb/ch9.h>
 #include <linux/usb/gadget.h>

 /* various constants */
 #define UDC_RDE_TIMER_SECONDS		1
 #define UDC_RDE_TIMER_DIV		10
 #define UDC_POLLSTALL_TIMER_USECONDS	500

 /* Hs AMD5536 chip rev. */
 #define UDC_HSA0_REV 1
 #define UDC_HSB1_REV 2

 /* Broadcom chip rev. */
 #define UDC_BCM_REV 10

 /*
  * SETUP usb commands
  * needed, because some SETUP's are handled in hw, but must be passed to
  * gadget driver above
  * SET_CONFIG
  */
 #define UDC_SETCONFIG_DWORD0			0x00000900
 #define UDC_SETCONFIG_DWORD0_VALUE_MASK		0xffff0000
 #define UDC_SETCONFIG_DWORD0_VALUE_OFS		16

 #define UDC_SETCONFIG_DWORD1			0x00000000

 /* SET_INTERFACE */
 #define UDC_SETINTF_DWORD0			0x00000b00
 #define UDC_SETINTF_DWORD0_ALT_MASK		0xffff0000
 #define UDC_SETINTF_DWORD0_ALT_OFS		16

 #define UDC_SETINTF_DWORD1			0x00000000
 #define UDC_SETINTF_DWORD1_INTF_MASK		0x0000ffff
 #define UDC_SETINTF_DWORD1_INTF_OFS		0

 /* Mass storage reset */
 #define UDC_MSCRES_DWORD0			0x0000ff21
 #define UDC_MSCRES_DWORD1			0x00000000

 /* Global CSR's -------------------------------------------------------------*/
 #define UDC_CSR_ADDR				0x500

 /* EP NE bits */
 /* EP number */
 #define UDC_CSR_NE_NUM_MASK			0x0000000f
 #define UDC_CSR_NE_NUM_OFS			0
 /* EP direction */
 #define UDC_CSR_NE_DIR_MASK			0x00000010
 #define UDC_CSR_NE_DIR_OFS			4
 /* EP type */
 #define UDC_CSR_NE_TYPE_MASK			0x00000060
 #define UDC_CSR_NE_TYPE_OFS			5
 /* EP config number */
 #define UDC_CSR_NE_CFG_MASK			0x00000780
 #define UDC_CSR_NE_CFG_OFS			7
 /* EP interface number */
 #define UDC_CSR_NE_INTF_MASK			0x00007800
 #define UDC_CSR_NE_INTF_OFS			11
 /* EP alt setting */
 #define UDC_CSR_NE_ALT_MASK			0x00078000
 #define UDC_CSR_NE_ALT_OFS			15

 /* max pkt */
 #define UDC_CSR_NE_MAX_PKT_MASK			0x3ff80000
 #define UDC_CSR_NE_MAX_PKT_OFS			19

 /* Device Config Register ---------------------------------------------------*/
 #define UDC_DEVCFG_ADDR				0x400

 #define UDC_DEVCFG_SOFTRESET			31
 #define UDC_DEVCFG_HNPSFEN			30
 #define UDC_DEVCFG_DMARST			29
 #define UDC_DEVCFG_SET_DESC			18
 #define UDC_DEVCFG_CSR_PRG			17
 #define UDC_DEVCFG_STATUS			7
 #define UDC_DEVCFG_DIR				6
 #define UDC_DEVCFG_PI				5
 #define UDC_DEVCFG_SS				4
 #define UDC_DEVCFG_SP				3
 #define UDC_DEVCFG_RWKP				2

 #define UDC_DEVCFG_SPD_MASK			0x3
 #define UDC_DEVCFG_SPD_OFS			0
 #define UDC_DEVCFG_SPD_HS			0x0
 #define UDC_DEVCFG_SPD_FS			0x1
 #define UDC_DEVCFG_SPD_LS			0x2
 /*#define UDC_DEVCFG_SPD_FS			0x3*/


 /* Device Control Register --------------------------------------------------*/
 #define UDC_DEVCTL_ADDR				0x404

 #define UDC_DEVCTL_THLEN_MASK			0xff000000
 #define UDC_DEVCTL_THLEN_OFS			24

 #define UDC_DEVCTL_BRLEN_MASK			0x00ff0000
 #define UDC_DEVCTL_BRLEN_OFS			16

 #define UDC_DEVCTL_SRX_FLUSH			14
 #define UDC_DEVCTL_CSR_DONE			13
 #define UDC_DEVCTL_DEVNAK			12
 #define UDC_DEVCTL_SD				10
 #define UDC_DEVCTL_MODE				9
 #define UDC_DEVCTL_BREN				8
 #define UDC_DEVCTL_THE				7
 #define UDC_DEVCTL_BF				6
 #define UDC_DEVCTL_BE				5
 #define UDC_DEVCTL_DU				4
 #define UDC_DEVCTL_TDE				3
 #define UDC_DEVCTL_RDE				2
 #define UDC_DEVCTL_RES				0


 /* Device Status Register ---------------------------------------------------*/
 #define UDC_DEVSTS_ADDR				0x408

 #define UDC_DEVSTS_TS_MASK			0xfffc0000
 #define UDC_DEVSTS_TS_OFS			18

 #define UDC_DEVSTS_SESSVLD			17
 #define UDC_DEVSTS_PHY_ERROR			16
 #define UDC_DEVSTS_RXFIFO_EMPTY			15

 #define UDC_DEVSTS_ENUM_SPEED_MASK		0x00006000
 #define UDC_DEVSTS_ENUM_SPEED_OFS		13
 #define UDC_DEVSTS_ENUM_SPEED_FULL		1
 #define UDC_DEVSTS_ENUM_SPEED_HIGH		0

 #define UDC_DEVSTS_SUSP				12

 #define UDC_DEVSTS_ALT_MASK			0x00000f00
 #define UDC_DEVSTS_ALT_OFS			8

 #define UDC_DEVSTS_INTF_MASK			0x000000f0
 #define UDC_DEVSTS_INTF_OFS			4

 #define UDC_DEVSTS_CFG_MASK			0x0000000f
 #define UDC_DEVSTS_CFG_OFS			0


 /* Device Interrupt Register ------------------------------------------------*/
 #define UDC_DEVINT_ADDR				0x40c

 #define UDC_DEVINT_SVC				7
 #define UDC_DEVINT_ENUM				6
 #define UDC_DEVINT_SOF				5
 #define UDC_DEVINT_US				4
 #define UDC_DEVINT_UR				3
 #define UDC_DEVINT_ES				2
 #define UDC_DEVINT_SI				1
 #define UDC_DEVINT_SC				0

 /* Device Interrupt Mask Register -------------------------------------------*/
 #define UDC_DEVINT_MSK_ADDR			0x410

 #define UDC_DEVINT_MSK				0x7f

 /* Endpoint Interrupt Register ----------------------------------------------*/
 #define UDC_EPINT_ADDR				0x414

 #define UDC_EPINT_OUT_MASK			0xffff0000
 #define UDC_EPINT_OUT_OFS			16
 #define UDC_EPINT_IN_MASK			0x0000ffff
 #define UDC_EPINT_IN_OFS			0

 #define UDC_EPINT_IN_EP0			0
 #define UDC_EPINT_IN_EP1			1
 #define UDC_EPINT_IN_EP2			2
 #define UDC_EPINT_IN_EP3			3
 #define UDC_EPINT_OUT_EP0			16
 #define UDC_EPINT_OUT_EP1			17
 #define UDC_EPINT_OUT_EP2			18
 #define UDC_EPINT_OUT_EP3			19

 #define UDC_EPINT_EP0_ENABLE_MSK		0x001e001e

 /* Endpoint Interrupt Mask Register -----------------------------------------*/
 #define UDC_EPINT_MSK_ADDR			0x418

 #define UDC_EPINT_OUT_MSK_MASK			0xffff0000
 #define UDC_EPINT_OUT_MSK_OFS			16
 #define UDC_EPINT_IN_MSK_MASK			0x0000ffff
 #define UDC_EPINT_IN_MSK_OFS			0

 #define UDC_EPINT_MSK_DISABLE_ALL		0xffffffff
 /* mask non-EP0 endpoints */
 #define UDC_EPDATAINT_MSK_DISABLE		0xfffefffe
 /* mask all dev interrupts */
 #define UDC_DEV_MSK_DISABLE			0x7f

 /* Endpoint-specific CSR's --------------------------------------------------*/
 #define UDC_EPREGS_ADDR				0x0
 #define UDC_EPIN_REGS_ADDR			0x0
 #define UDC_EPOUT_REGS_ADDR			0x200

 #define UDC_EPCTL_ADDR				0x0

 #define UDC_EPCTL_RRDY				9
 #define UDC_EPCTL_CNAK				8
 #define UDC_EPCTL_SNAK				7
 #define UDC_EPCTL_NAK				6

 #define UDC_EPCTL_ET_MASK			0x00000030
 #define UDC_EPCTL_ET_OFS			4
 #define UDC_EPCTL_ET_CONTROL			0
 #define UDC_EPCTL_ET_ISO			1
 #define UDC_EPCTL_ET_BULK			2
 #define UDC_EPCTL_ET_INTERRUPT			3

 #define UDC_EPCTL_P				3
 #define UDC_EPCTL_SN				2
 #define UDC_EPCTL_F				1
 #define UDC_EPCTL_S				0

 /* Endpoint Status Registers ------------------------------------------------*/
 #define UDC_EPSTS_ADDR				0x4

 #define UDC_EPSTS_RX_PKT_SIZE_MASK		0x007ff800
 #define UDC_EPSTS_RX_PKT_SIZE_OFS		11

 #define UDC_EPSTS_TDC				10
 #define UDC_EPSTS_HE				9
 #define UDC_EPSTS_BNA				7
 #define UDC_EPSTS_IN				6

 #define UDC_EPSTS_OUT_MASK			0x00000030
 #define UDC_EPSTS_OUT_OFS			4
 #define UDC_EPSTS_OUT_DATA			1
 #define UDC_EPSTS_OUT_DATA_CLEAR		0x10
 #define UDC_EPSTS_OUT_SETUP			2
 #define UDC_EPSTS_OUT_SETUP_CLEAR		0x20
 #define UDC_EPSTS_OUT_CLEAR			0x30

 /* Endpoint Buffer Size IN/ Receive Packet Frame Number OUT Registers ------*/
 #define UDC_EPIN_BUFF_SIZE_ADDR			0x8
 #define UDC_EPOUT_FRAME_NUMBER_ADDR		0x8

 #define UDC_EPIN_BUFF_SIZE_MASK			0x0000ffff
 #define UDC_EPIN_BUFF_SIZE_OFS			0
 /* EP0in txfifo = 128 bytes*/
 #define UDC_EPIN0_BUFF_SIZE			32
 /* EP0in fullspeed txfifo = 128 bytes*/
 #define UDC_FS_EPIN0_BUFF_SIZE			32

 /* fifo size mult = fifo size / max packet */
 #define UDC_EPIN_BUFF_SIZE_MULT			2

 /* EPin data fifo size = 1024 bytes DOUBLE BUFFERING */
 #define UDC_EPIN_BUFF_SIZE			256
 /* EPin small INT data fifo size = 128 bytes */
 #define UDC_EPIN_SMALLINT_BUFF_SIZE		32

 /* EPin fullspeed data fifo size = 128 bytes DOUBLE BUFFERING */
 #define UDC_FS_EPIN_BUFF_SIZE			32

 #define UDC_EPOUT_FRAME_NUMBER_MASK		0x0000ffff
 #define UDC_EPOUT_FRAME_NUMBER_OFS		0

 /* Endpoint Buffer Size OUT/Max Packet Size Registers -----------------------*/
 #define UDC_EPOUT_BUFF_SIZE_ADDR		0x0c
 #define UDC_EP_MAX_PKT_SIZE_ADDR		0x0c

 #define UDC_EPOUT_BUFF_SIZE_MASK		0xffff0000
 #define UDC_EPOUT_BUFF_SIZE_OFS			16
 #define UDC_EP_MAX_PKT_SIZE_MASK		0x0000ffff
 #define UDC_EP_MAX_PKT_SIZE_OFS			0
 /* EP0in max packet size = 64 bytes */
 #define UDC_EP0IN_MAX_PKT_SIZE			64
 /* EP0out max packet size = 64 bytes */
 #define UDC_EP0OUT_MAX_PKT_SIZE			64
 /* EP0in fullspeed max packet size = 64 bytes */
 #define UDC_FS_EP0IN_MAX_PKT_SIZE		64
 /* EP0out fullspeed max packet size = 64 bytes */
 #define UDC_FS_EP0OUT_MAX_PKT_SIZE		64

 /*
  * Endpoint dma descriptors ------------------------------------------------
  *
  * Setup data, Status dword
  */
 #define UDC_DMA_STP_STS_CFG_MASK		0x0fff0000
 #define UDC_DMA_STP_STS_CFG_OFS			16
 #define UDC_DMA_STP_STS_CFG_ALT_MASK		0x000f0000
 #define UDC_DMA_STP_STS_CFG_ALT_OFS		16
 #define UDC_DMA_STP_STS_CFG_INTF_MASK		0x00f00000
 #define UDC_DMA_STP_STS_CFG_INTF_OFS		20
 #define UDC_DMA_STP_STS_CFG_NUM_MASK		0x0f000000
 #define UDC_DMA_STP_STS_CFG_NUM_OFS		24
 #define UDC_DMA_STP_STS_RX_MASK			0x30000000
 #define UDC_DMA_STP_STS_RX_OFS			28
 #define UDC_DMA_STP_STS_BS_MASK			0xc0000000
 #define UDC_DMA_STP_STS_BS_OFS			30
 #define UDC_DMA_STP_STS_BS_HOST_READY		0
 #define UDC_DMA_STP_STS_BS_DMA_BUSY		1
 #define UDC_DMA_STP_STS_BS_DMA_DONE		2
 #define UDC_DMA_STP_STS_BS_HOST_BUSY		3
 /* IN data, Status dword */
 #define UDC_DMA_IN_STS_TXBYTES_MASK		0x0000ffff
 #define UDC_DMA_IN_STS_TXBYTES_OFS		0
 #define	UDC_DMA_IN_STS_FRAMENUM_MASK		0x07ff0000
 #define UDC_DMA_IN_STS_FRAMENUM_OFS		0
 #define UDC_DMA_IN_STS_L			27
 #define UDC_DMA_IN_STS_TX_MASK			0x30000000
 #define UDC_DMA_IN_STS_TX_OFS			28
 #define UDC_DMA_IN_STS_BS_MASK			0xc0000000
 #define UDC_DMA_IN_STS_BS_OFS			30
 #define UDC_DMA_IN_STS_BS_HOST_READY		0
 #define UDC_DMA_IN_STS_BS_DMA_BUSY		1
 #define UDC_DMA_IN_STS_BS_DMA_DONE		2
 #define UDC_DMA_IN_STS_BS_HOST_BUSY		3
 /* OUT data, Status dword */
 #define UDC_DMA_OUT_STS_RXBYTES_MASK		0x0000ffff
 #define UDC_DMA_OUT_STS_RXBYTES_OFS		0
 #define UDC_DMA_OUT_STS_FRAMENUM_MASK		0x07ff0000
 #define UDC_DMA_OUT_STS_FRAMENUM_OFS		0
 #define UDC_DMA_OUT_STS_L			27
 #define UDC_DMA_OUT_STS_RX_MASK			0x30000000
 #define UDC_DMA_OUT_STS_RX_OFS			28
 #define UDC_DMA_OUT_STS_BS_MASK			0xc0000000
 #define UDC_DMA_OUT_STS_BS_OFS			30
 #define UDC_DMA_OUT_STS_BS_HOST_READY		0
 #define UDC_DMA_OUT_STS_BS_DMA_BUSY		1
 #define UDC_DMA_OUT_STS_BS_DMA_DONE		2
 #define UDC_DMA_OUT_STS_BS_HOST_BUSY		3
 /* max ep0in packet */
 #define UDC_EP0IN_MAXPACKET			1000
 /* max dma packet */
 #define UDC_DMA_MAXPACKET			65536

 /* un-usable DMA address */
 #define DMA_DONT_USE				(~(dma_addr_t) 0 )

 /* other Endpoint register addresses and values-----------------------------*/
 #define UDC_EP_SUBPTR_ADDR			0x10
 #define UDC_EP_DESPTR_ADDR			0x14
 #define UDC_EP_WRITE_CONFIRM_ADDR		0x1c

 /* EP number as layouted in AHB space */
 #define UDC_EP_NUM				32
 #define UDC_EPIN_NUM				16
 #define UDC_EPIN_NUM_USED			5
 #define UDC_EPOUT_NUM				16
 /* EP number of EP's really used = EP0 + 8 data EP's */
 #define UDC_USED_EP_NUM				9
 /* UDC CSR regs are aligned but AHB regs not - offset for OUT EP's */
 #define UDC_CSR_EP_OUT_IX_OFS			12

 #define UDC_EP0OUT_IX				16
 #define UDC_EP0IN_IX				0

 /* Rx fifo address and size = 1k -------------------------------------------*/
 #define UDC_RXFIFO_ADDR				0x800
 #define UDC_RXFIFO_SIZE				0x400

 /* Tx fifo address and size = 1.5k -----------------------------------------*/
 #define UDC_TXFIFO_ADDR				0xc00
 #define UDC_TXFIFO_SIZE				0x600

 /* default data endpoints --------------------------------------------------*/
 #define UDC_EPIN_STATUS_IX			1
 #define UDC_EPIN_IX				2
 #define UDC_EPOUT_IX				18

 /* general constants -------------------------------------------------------*/
 #define UDC_DWORD_BYTES				4
 #define UDC_BITS_PER_BYTE_SHIFT			3
 #define UDC_BYTE_MASK				0xff
 #define UDC_BITS_PER_BYTE			8

 /*---------------------------------------------------------------------------*/
 /* UDC CSR's */
 struct udc_csrs {

 	/* sca - setup command address */
 	u32 sca;

 	/* ep ne's */
 	u32 ne[UDC_USED_EP_NUM];
 } __attribute__ ((packed));

 /* AHB subsystem CSR registers */
 struct udc_regs {

 	/* device configuration */
 	u32 cfg;

 	/* device control */
 	u32 ctl;

 	/* device status */
 	u32 sts;

 	/* device interrupt */
 	u32 irqsts;

 	/* device interrupt mask */
 	u32 irqmsk;

 	/* endpoint interrupt */
 	u32 ep_irqsts;

 	/* endpoint interrupt mask */
 	u32 ep_irqmsk;
 } __attribute__ ((packed));

 /* endpoint specific registers */
 struct udc_ep_regs {

 	/* endpoint control */
 	u32 ctl;

 	/* endpoint status */
 	u32 sts;

 	/* endpoint buffer size in/ receive packet frame number out */
 	u32 bufin_framenum;

 	/* endpoint buffer size out/max packet size */
 	u32 bufout_maxpkt;

 	/* endpoint setup buffer pointer */
 	u32 subptr;

 	/* endpoint data descriptor pointer */
 	u32 desptr;

 	/* reserverd */
 	u32 reserved;

 	/* write/read confirmation */
 	u32 confirm;

 } __attribute__ ((packed));

 /* control data DMA desc */
 struct udc_stp_dma {
 	/* status quadlet */
 	u32	status;
 	/* reserved */
 	u32	_reserved;
 	/* first setup word */
 	u32	data12;
 	/* second setup word */
 	u32	data34;
 } __attribute__ ((aligned (16)));

 /* normal data DMA desc */
 struct udc_data_dma {
 	/* status quadlet */
 	u32	status;
 	/* reserved */
 	u32	_reserved;
 	/* buffer pointer */
 	u32	bufptr;
 	/* next descriptor pointer */
 	u32	next;
 } __attribute__ ((aligned (16)));

 /* request packet */
 struct udc_request {
 	/* embedded gadget ep */
 	struct usb_request		req;

 	/* flags */
 	unsigned			dma_going : 1,
 					dma_done : 1;
 	/* phys. address */
 	dma_addr_t			td_phys;
 	/* first dma desc. of chain */
 	struct udc_data_dma		*td_data;
 	/* last dma desc. of chain */
 	struct udc_data_dma		*td_data_last;
 	struct list_head		queue;

 	/* chain length */
 	unsigned			chain_len;

 };

 /* UDC specific endpoint parameters */
 struct udc_ep {
 	struct usb_ep			ep;
 	struct udc_ep_regs __iomem	*regs;
 	u32 __iomem			*txfifo;
 	u32 __iomem			*dma;
 	dma_addr_t			td_phys;
 	dma_addr_t			td_stp_dma;
 	struct udc_stp_dma		*td_stp;
 	struct udc_data_dma		*td;
 	/* temp request */
 	struct udc_request		*req;
 	unsigned			req_used;
 	unsigned			req_completed;
 	/* dummy DMA desc for BNA dummy */
 	struct udc_request		*bna_dummy_req;
 	unsigned			bna_occurred;

 	/* NAK state */
 	unsigned			naking;

 	struct udc			*dev;

 	/* queue for requests */
 	struct list_head		queue;
 	unsigned			halted;
 	unsigned			cancel_transfer;
 	unsigned			num : 5,
 					fifo_depth : 14,
 					in : 1;
 };

 /* device struct */
 struct udc {
 	struct usb_gadget		gadget;
 	spinlock_t			lock;	/* protects all state */
 	/* all endpoints */
 	struct udc_ep			ep[UDC_EP_NUM];
 	struct usb_gadget_driver	*driver;
 	/* operational flags */
 	unsigned			stall_ep0in : 1,
 					waiting_zlp_ack_ep0in : 1,
 					set_cfg_not_acked : 1,
 					data_ep_enabled : 1,
 					data_ep_queued : 1,
 					sys_suspended : 1,
 					connected;

 	u16				chiprev;

 	/* registers */
 	struct pci_dev			*pdev;
 	struct udc_csrs __iomem		*csr;
 	struct udc_regs __iomem		*regs;
 	struct udc_ep_regs __iomem	*ep_regs;
 	u32 __iomem			*rxfifo;
 	u32 __iomem			*txfifo;

 	/* DMA desc pools */
 	struct dma_pool			*data_requests;
 	struct dma_pool			*stp_requests;

 	/* device data */
 	unsigned long			phys_addr;
 	void __iomem			*virt_addr;
 	unsigned			irq;

 	/* states */
 	u16				cur_config;
 	u16				cur_intf;
 	u16				cur_alt;

 	/* for platform device and extcon support */
 	struct device			*dev;
 	struct phy			*udc_phy;
 	struct extcon_dev		*edev;
 	struct extcon_specific_cable_nb	extcon_nb;
 	struct notifier_block		nb;
 	struct delayed_work		drd_work;
 	struct workqueue_struct		*drd_wq;
 	u32				conn_type;
 };

 #define to_amd5536_udc(g)	(container_of((g), struct udc, gadget))

 /* setup request data */
 union udc_setup_data {
 	u32			data[2];
 	struct usb_ctrlrequest	request;
 };

 /* Function declarations */
 int udc_enable_dev_setup_interrupts(struct udc *dev);
 int udc_mask_unused_interrupts(struct udc *dev);
 irqreturn_t udc_irq(int irq, void *pdev);
 void gadget_release(struct device *pdev);
 void empty_req_queue(struct udc_ep *ep);
 void udc_basic_init(struct udc *dev);
 void free_dma_pools(struct udc *dev);
 int init_dma_pools(struct udc *dev);
 void udc_remove(struct udc *dev);
 int udc_probe(struct udc *dev);

 /* DMA usage flag */
 static bool use_dma = 1;
 /* packet per buffer dma */
 static bool use_dma_ppb = 1;
 /* with per descr. update */
 static bool use_dma_ppb_du;
 /* full speed only mode */
 static bool use_fullspeed;

 /* module parameters */
 module_param(use_dma, bool, S_IRUGO);
 MODULE_PARM_DESC(use_dma, "true for DMA");
 module_param(use_dma_ppb, bool, S_IRUGO);
 MODULE_PARM_DESC(use_dma_ppb, "true for DMA in packet per buffer mode");
 module_param(use_dma_ppb_du, bool, S_IRUGO);
 MODULE_PARM_DESC(use_dma_ppb_du,
 	"true for DMA in packet per buffer mode with descriptor update");
 module_param(use_fullspeed, bool, S_IRUGO);
 MODULE_PARM_DESC(use_fullspeed, "true for fullspeed only");
 /*
  *---------------------------------------------------------------------------
  * SET and GET bitfields in u32 values
  * via constants for mask/offset:
  * <bit_field_stub_name> is the text between
  * UDC_ and _MASK|_OFS of appropriate
  * constant
  *
  * set bitfield value in u32 u32Val
  */
 #define AMD_ADDBITS(u32Val, bitfield_val, bitfield_stub_name)		\
 	(((u32Val) & (((u32) ~((u32) bitfield_stub_name##_MASK))))	\
 	| (((bitfield_val) << ((u32) bitfield_stub_name##_OFS))		\
 		& ((u32) bitfield_stub_name##_MASK)))

 /*
  * set bitfield value in zero-initialized u32 u32Val
  * => bitfield bits in u32Val are all zero
  */
 #define AMD_INIT_SETBITS(u32Val, bitfield_val, bitfield_stub_name)	\
 	((u32Val)							\
 	| (((bitfield_val) << ((u32) bitfield_stub_name##_OFS))		\
 		& ((u32) bitfield_stub_name##_MASK)))

 /* get bitfield value from u32 u32Val */
 #define AMD_GETBITS(u32Val, bitfield_stub_name)				\
 	((u32Val & ((u32) bitfield_stub_name##_MASK))			\
 		>> ((u32) bitfield_stub_name##_OFS))

 /* SET and GET bits in u32 values ------------------------------------------*/
 #define AMD_BIT(bit_stub_name) (1 << bit_stub_name)
 #define AMD_UNMASK_BIT(bit_stub_name) (~AMD_BIT(bit_stub_name))
 #define AMD_CLEAR_BIT(bit_stub_name) (~AMD_BIT(bit_stub_name))

 /* debug macros ------------------------------------------------------------*/

 #define DBG(udc , args...)	dev_dbg(udc->dev, args)

 #ifdef UDC_VERBOSE
 #define VDBG			DBG
 #else
 #define VDBG(udc , args...)	do {} while (0)
 #endif

 #endif /* #ifdef AMD5536UDC_H */
	/*
	* amd5536.h -- header for AMD 5536 UDC high/full speed USB device controller
	*
	* Copyright (C) 2007 AMD (http://www.amd.com)
	* Author: Thomas Dahlmann
	*
	* 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.
	*/

	#ifndef AMD5536UDC_H
	#define AMD5536UDC_H

	/* debug control */
	/* #define UDC_VERBOSE */

	#include <linux/extcon.h>
	#include <linux/usb/ch9.h>
	#include <linux/usb/gadget.h>

	/* various constants */
	#define UDC_RDE_TIMER_SECONDS 1
	#define UDC_RDE_TIMER_DIV 10
	#define UDC_POLLSTALL_TIMER_USECONDS 500

	/* Hs AMD5536 chip rev. */
	#define UDC_HSA0_REV 1
	#define UDC_HSB1_REV 2

	/* Broadcom chip rev. */
	#define UDC_BCM_REV 10

	/*
	* SETUP usb commands
	* needed, because some SETUP's are handled in hw, but must be passed to
	* gadget driver above
	* SET_CONFIG
	*/
	#define UDC_SETCONFIG_DWORD0 0x00000900
	#define UDC_SETCONFIG_DWORD0_VALUE_MASK 0xffff0000
	#define UDC_SETCONFIG_DWORD0_VALUE_OFS 16

	#define UDC_SETCONFIG_DWORD1 0x00000000

	/* SET_INTERFACE */
	#define UDC_SETINTF_DWORD0 0x00000b00
	#define UDC_SETINTF_DWORD0_ALT_MASK 0xffff0000
	#define UDC_SETINTF_DWORD0_ALT_OFS 16

	#define UDC_SETINTF_DWORD1 0x00000000
	#define UDC_SETINTF_DWORD1_INTF_MASK 0x0000ffff
	#define UDC_SETINTF_DWORD1_INTF_OFS 0

	/* Mass storage reset */
	#define UDC_MSCRES_DWORD0 0x0000ff21
	#define UDC_MSCRES_DWORD1 0x00000000

	/* Global CSR's -------------------------------------------------------------*/
	#define UDC_CSR_ADDR 0x500

	/* EP NE bits */
	/* EP number */
	#define UDC_CSR_NE_NUM_MASK 0x0000000f
	#define UDC_CSR_NE_NUM_OFS 0
	/* EP direction */
	#define UDC_CSR_NE_DIR_MASK 0x00000010
	#define UDC_CSR_NE_DIR_OFS 4
	/* EP type */
	#define UDC_CSR_NE_TYPE_MASK 0x00000060
	#define UDC_CSR_NE_TYPE_OFS 5
	/* EP config number */
	#define UDC_CSR_NE_CFG_MASK 0x00000780
	#define UDC_CSR_NE_CFG_OFS 7
	/* EP interface number */
	#define UDC_CSR_NE_INTF_MASK 0x00007800
	#define UDC_CSR_NE_INTF_OFS 11
	/* EP alt setting */
	#define UDC_CSR_NE_ALT_MASK 0x00078000
	#define UDC_CSR_NE_ALT_OFS 15

	/* max pkt */
	#define UDC_CSR_NE_MAX_PKT_MASK 0x3ff80000
	#define UDC_CSR_NE_MAX_PKT_OFS 19

	/* Device Config Register ---------------------------------------------------*/
	#define UDC_DEVCFG_ADDR 0x400

	#define UDC_DEVCFG_SOFTRESET 31
	#define UDC_DEVCFG_HNPSFEN 30
	#define UDC_DEVCFG_DMARST 29
	#define UDC_DEVCFG_SET_DESC 18
	#define UDC_DEVCFG_CSR_PRG 17
	#define UDC_DEVCFG_STATUS 7
	#define UDC_DEVCFG_DIR 6
	#define UDC_DEVCFG_PI 5
	#define UDC_DEVCFG_SS 4
	#define UDC_DEVCFG_SP 3
	#define UDC_DEVCFG_RWKP 2

	#define UDC_DEVCFG_SPD_MASK 0x3
	#define UDC_DEVCFG_SPD_OFS 0
	#define UDC_DEVCFG_SPD_HS 0x0
	#define UDC_DEVCFG_SPD_FS 0x1
	#define UDC_DEVCFG_SPD_LS 0x2
	/#define UDC_DEVCFG_SPD_FS 0x3/


	/* Device Control Register --------------------------------------------------*/
	#define UDC_DEVCTL_ADDR 0x404

	#define UDC_DEVCTL_THLEN_MASK 0xff000000
	#define UDC_DEVCTL_THLEN_OFS 24

	#define UDC_DEVCTL_BRLEN_MASK 0x00ff0000
	#define UDC_DEVCTL_BRLEN_OFS 16

	#define UDC_DEVCTL_SRX_FLUSH 14
	#define UDC_DEVCTL_CSR_DONE 13
	#define UDC_DEVCTL_DEVNAK 12
	#define UDC_DEVCTL_SD 10
	#define UDC_DEVCTL_MODE 9
	#define UDC_DEVCTL_BREN 8
	#define UDC_DEVCTL_THE 7
	#define UDC_DEVCTL_BF 6
	#define UDC_DEVCTL_BE 5
	#define UDC_DEVCTL_DU 4
	#define UDC_DEVCTL_TDE 3
	#define UDC_DEVCTL_RDE 2
	#define UDC_DEVCTL_RES 0


	/* Device Status Register ---------------------------------------------------*/
	#define UDC_DEVSTS_ADDR 0x408

	#define UDC_DEVSTS_TS_MASK 0xfffc0000
	#define UDC_DEVSTS_TS_OFS 18

	#define UDC_DEVSTS_SESSVLD 17
	#define UDC_DEVSTS_PHY_ERROR 16
	#define UDC_DEVSTS_RXFIFO_EMPTY 15

	#define UDC_DEVSTS_ENUM_SPEED_MASK 0x00006000
	#define UDC_DEVSTS_ENUM_SPEED_OFS 13
	#define UDC_DEVSTS_ENUM_SPEED_FULL 1
	#define UDC_DEVSTS_ENUM_SPEED_HIGH 0

	#define UDC_DEVSTS_SUSP 12

	#define UDC_DEVSTS_ALT_MASK 0x00000f00
	#define UDC_DEVSTS_ALT_OFS 8

	#define UDC_DEVSTS_INTF_MASK 0x000000f0
	#define UDC_DEVSTS_INTF_OFS 4

	#define UDC_DEVSTS_CFG_MASK 0x0000000f
	#define UDC_DEVSTS_CFG_OFS 0


	/* Device Interrupt Register ------------------------------------------------*/
	#define UDC_DEVINT_ADDR 0x40c

	#define UDC_DEVINT_SVC 7
	#define UDC_DEVINT_ENUM 6
	#define UDC_DEVINT_SOF 5
	#define UDC_DEVINT_US 4
	#define UDC_DEVINT_UR 3
	#define UDC_DEVINT_ES 2
	#define UDC_DEVINT_SI 1
	#define UDC_DEVINT_SC 0

	/* Device Interrupt Mask Register -------------------------------------------*/
	#define UDC_DEVINT_MSK_ADDR 0x410

	#define UDC_DEVINT_MSK 0x7f

	/* Endpoint Interrupt Register ----------------------------------------------*/
	#define UDC_EPINT_ADDR 0x414

	#define UDC_EPINT_OUT_MASK 0xffff0000
	#define UDC_EPINT_OUT_OFS 16
	#define UDC_EPINT_IN_MASK 0x0000ffff
	#define UDC_EPINT_IN_OFS 0

	#define UDC_EPINT_IN_EP0 0
	#define UDC_EPINT_IN_EP1 1
	#define UDC_EPINT_IN_EP2 2
	#define UDC_EPINT_IN_EP3 3
	#define UDC_EPINT_OUT_EP0 16
	#define UDC_EPINT_OUT_EP1 17
	#define UDC_EPINT_OUT_EP2 18
	#define UDC_EPINT_OUT_EP3 19

	#define UDC_EPINT_EP0_ENABLE_MSK 0x001e001e

	/* Endpoint Interrupt Mask Register -----------------------------------------*/
	#define UDC_EPINT_MSK_ADDR 0x418

	#define UDC_EPINT_OUT_MSK_MASK 0xffff0000
	#define UDC_EPINT_OUT_MSK_OFS 16
	#define UDC_EPINT_IN_MSK_MASK 0x0000ffff
	#define UDC_EPINT_IN_MSK_OFS 0

	#define UDC_EPINT_MSK_DISABLE_ALL 0xffffffff
	/* mask non-EP0 endpoints */
	#define UDC_EPDATAINT_MSK_DISABLE 0xfffefffe
	/* mask all dev interrupts */
	#define UDC_DEV_MSK_DISABLE 0x7f

	/* Endpoint-specific CSR's --------------------------------------------------*/
	#define UDC_EPREGS_ADDR 0x0
	#define UDC_EPIN_REGS_ADDR 0x0
	#define UDC_EPOUT_REGS_ADDR 0x200

	#define UDC_EPCTL_ADDR 0x0

	#define UDC_EPCTL_RRDY 9
	#define UDC_EPCTL_CNAK 8
	#define UDC_EPCTL_SNAK 7
	#define UDC_EPCTL_NAK 6

	#define UDC_EPCTL_ET_MASK 0x00000030
	#define UDC_EPCTL_ET_OFS 4
	#define UDC_EPCTL_ET_CONTROL 0
	#define UDC_EPCTL_ET_ISO 1
	#define UDC_EPCTL_ET_BULK 2
	#define UDC_EPCTL_ET_INTERRUPT 3

	#define UDC_EPCTL_P 3
	#define UDC_EPCTL_SN 2
	#define UDC_EPCTL_F 1
	#define UDC_EPCTL_S 0

	/* Endpoint Status Registers ------------------------------------------------*/
	#define UDC_EPSTS_ADDR 0x4

	#define UDC_EPSTS_RX_PKT_SIZE_MASK 0x007ff800
	#define UDC_EPSTS_RX_PKT_SIZE_OFS 11

	#define UDC_EPSTS_TDC 10
	#define UDC_EPSTS_HE 9
	#define UDC_EPSTS_BNA 7
	#define UDC_EPSTS_IN 6

	#define UDC_EPSTS_OUT_MASK 0x00000030
	#define UDC_EPSTS_OUT_OFS 4
	#define UDC_EPSTS_OUT_DATA 1
	#define UDC_EPSTS_OUT_DATA_CLEAR 0x10
	#define UDC_EPSTS_OUT_SETUP 2
	#define UDC_EPSTS_OUT_SETUP_CLEAR 0x20
	#define UDC_EPSTS_OUT_CLEAR 0x30

	/* Endpoint Buffer Size IN/ Receive Packet Frame Number OUT Registers ------*/
	#define UDC_EPIN_BUFF_SIZE_ADDR 0x8
	#define UDC_EPOUT_FRAME_NUMBER_ADDR 0x8

	#define UDC_EPIN_BUFF_SIZE_MASK 0x0000ffff
	#define UDC_EPIN_BUFF_SIZE_OFS 0
	/* EP0in txfifo = 128 bytes*/
	#define UDC_EPIN0_BUFF_SIZE 32
	/* EP0in fullspeed txfifo = 128 bytes*/
	#define UDC_FS_EPIN0_BUFF_SIZE 32

	/* fifo size mult = fifo size / max packet */
	#define UDC_EPIN_BUFF_SIZE_MULT 2

	/* EPin data fifo size = 1024 bytes DOUBLE BUFFERING */
	#define UDC_EPIN_BUFF_SIZE 256
	/* EPin small INT data fifo size = 128 bytes */
	#define UDC_EPIN_SMALLINT_BUFF_SIZE 32

	/* EPin fullspeed data fifo size = 128 bytes DOUBLE BUFFERING */
	#define UDC_FS_EPIN_BUFF_SIZE 32

	#define UDC_EPOUT_FRAME_NUMBER_MASK 0x0000ffff
	#define UDC_EPOUT_FRAME_NUMBER_OFS 0

	/* Endpoint Buffer Size OUT/Max Packet Size Registers -----------------------*/
	#define UDC_EPOUT_BUFF_SIZE_ADDR 0x0c
	#define UDC_EP_MAX_PKT_SIZE_ADDR 0x0c

	#define UDC_EPOUT_BUFF_SIZE_MASK 0xffff0000
	#define UDC_EPOUT_BUFF_SIZE_OFS 16
	#define UDC_EP_MAX_PKT_SIZE_MASK 0x0000ffff
	#define UDC_EP_MAX_PKT_SIZE_OFS 0
	/* EP0in max packet size = 64 bytes */
	#define UDC_EP0IN_MAX_PKT_SIZE 64
	/* EP0out max packet size = 64 bytes */
	#define UDC_EP0OUT_MAX_PKT_SIZE 64
	/* EP0in fullspeed max packet size = 64 bytes */
	#define UDC_FS_EP0IN_MAX_PKT_SIZE 64
	/* EP0out fullspeed max packet size = 64 bytes */
	#define UDC_FS_EP0OUT_MAX_PKT_SIZE 64

	/*
	* Endpoint dma descriptors ------------------------------------------------
	*
	* Setup data, Status dword
	*/
	#define UDC_DMA_STP_STS_CFG_MASK 0x0fff0000
	#define UDC_DMA_STP_STS_CFG_OFS 16
	#define UDC_DMA_STP_STS_CFG_ALT_MASK 0x000f0000
	#define UDC_DMA_STP_STS_CFG_ALT_OFS 16
	#define UDC_DMA_STP_STS_CFG_INTF_MASK 0x00f00000
	#define UDC_DMA_STP_STS_CFG_INTF_OFS 20
	#define UDC_DMA_STP_STS_CFG_NUM_MASK 0x0f000000
	#define UDC_DMA_STP_STS_CFG_NUM_OFS 24
	#define UDC_DMA_STP_STS_RX_MASK 0x30000000
	#define UDC_DMA_STP_STS_RX_OFS 28
	#define UDC_DMA_STP_STS_BS_MASK 0xc0000000
	#define UDC_DMA_STP_STS_BS_OFS 30
	#define UDC_DMA_STP_STS_BS_HOST_READY 0
	#define UDC_DMA_STP_STS_BS_DMA_BUSY 1
	#define UDC_DMA_STP_STS_BS_DMA_DONE 2
	#define UDC_DMA_STP_STS_BS_HOST_BUSY 3
	/* IN data, Status dword */
	#define UDC_DMA_IN_STS_TXBYTES_MASK 0x0000ffff
	#define UDC_DMA_IN_STS_TXBYTES_OFS 0
	#define UDC_DMA_IN_STS_FRAMENUM_MASK 0x07ff0000
	#define UDC_DMA_IN_STS_FRAMENUM_OFS 0
	#define UDC_DMA_IN_STS_L 27
	#define UDC_DMA_IN_STS_TX_MASK 0x30000000
	#define UDC_DMA_IN_STS_TX_OFS 28
	#define UDC_DMA_IN_STS_BS_MASK 0xc0000000
	#define UDC_DMA_IN_STS_BS_OFS 30
	#define UDC_DMA_IN_STS_BS_HOST_READY 0
	#define UDC_DMA_IN_STS_BS_DMA_BUSY 1
	#define UDC_DMA_IN_STS_BS_DMA_DONE 2
	#define UDC_DMA_IN_STS_BS_HOST_BUSY 3
	/* OUT data, Status dword */
	#define UDC_DMA_OUT_STS_RXBYTES_MASK 0x0000ffff
	#define UDC_DMA_OUT_STS_RXBYTES_OFS 0
	#define UDC_DMA_OUT_STS_FRAMENUM_MASK 0x07ff0000
	#define UDC_DMA_OUT_STS_FRAMENUM_OFS 0
	#define UDC_DMA_OUT_STS_L 27
	#define UDC_DMA_OUT_STS_RX_MASK 0x30000000
	#define UDC_DMA_OUT_STS_RX_OFS 28
	#define UDC_DMA_OUT_STS_BS_MASK 0xc0000000
	#define UDC_DMA_OUT_STS_BS_OFS 30
	#define UDC_DMA_OUT_STS_BS_HOST_READY 0
	#define UDC_DMA_OUT_STS_BS_DMA_BUSY 1
	#define UDC_DMA_OUT_STS_BS_DMA_DONE 2
	#define UDC_DMA_OUT_STS_BS_HOST_BUSY 3
	/* max ep0in packet */
	#define UDC_EP0IN_MAXPACKET 1000
	/* max dma packet */
	#define UDC_DMA_MAXPACKET 65536

	/* un-usable DMA address */
	#define DMA_DONT_USE (~(dma_addr_t) 0 )

	/* other Endpoint register addresses and values-----------------------------*/
	#define UDC_EP_SUBPTR_ADDR 0x10
	#define UDC_EP_DESPTR_ADDR 0x14
	#define UDC_EP_WRITE_CONFIRM_ADDR 0x1c

	/* EP number as layouted in AHB space */
	#define UDC_EP_NUM 32
	#define UDC_EPIN_NUM 16
	#define UDC_EPIN_NUM_USED 5
	#define UDC_EPOUT_NUM 16
	/* EP number of EP's really used = EP0 + 8 data EP's */
	#define UDC_USED_EP_NUM 9
	/* UDC CSR regs are aligned but AHB regs not - offset for OUT EP's */
	#define UDC_CSR_EP_OUT_IX_OFS 12

	#define UDC_EP0OUT_IX 16
	#define UDC_EP0IN_IX 0

	/* Rx fifo address and size = 1k -------------------------------------------*/
	#define UDC_RXFIFO_ADDR 0x800
	#define UDC_RXFIFO_SIZE 0x400

	/* Tx fifo address and size = 1.5k -----------------------------------------*/
	#define UDC_TXFIFO_ADDR 0xc00
	#define UDC_TXFIFO_SIZE 0x600

	/* default data endpoints --------------------------------------------------*/
	#define UDC_EPIN_STATUS_IX 1
	#define UDC_EPIN_IX 2
	#define UDC_EPOUT_IX 18

	/* general constants -------------------------------------------------------*/
	#define UDC_DWORD_BYTES 4
	#define UDC_BITS_PER_BYTE_SHIFT 3
	#define UDC_BYTE_MASK 0xff
	#define UDC_BITS_PER_BYTE 8

	/---------------------------------------------------------------------------/
	/* UDC CSR's */
	struct udc_csrs {

	/* sca - setup command address */
	u32 sca;

	/* ep ne's */
	u32 ne[UDC_USED_EP_NUM];
	} __attribute__ ((packed));

	/* AHB subsystem CSR registers */
	struct udc_regs {

	/* device configuration */
	u32 cfg;

	/* device control */
	u32 ctl;

	/* device status */
	u32 sts;

	/* device interrupt */
	u32 irqsts;

	/* device interrupt mask */
	u32 irqmsk;

	/* endpoint interrupt */
	u32 ep_irqsts;

	/* endpoint interrupt mask */
	u32 ep_irqmsk;
	} __attribute__ ((packed));

	/* endpoint specific registers */
	struct udc_ep_regs {

	/* endpoint control */
	u32 ctl;

	/* endpoint status */
	u32 sts;

	/* endpoint buffer size in/ receive packet frame number out */
	u32 bufin_framenum;

	/* endpoint buffer size out/max packet size */
	u32 bufout_maxpkt;

	/* endpoint setup buffer pointer */
	u32 subptr;

	/* endpoint data descriptor pointer */
	u32 desptr;

	/* reserverd */
	u32 reserved;

	/* write/read confirmation */
	u32 confirm;

	} __attribute__ ((packed));

	/* control data DMA desc */
	struct udc_stp_dma {
	/* status quadlet */
	u32 status;
	/* reserved */
	u32 _reserved;
	/* first setup word */
	u32 data12;
	/* second setup word */
	u32 data34;
	} __attribute__ ((aligned (16)));

	/* normal data DMA desc */
	struct udc_data_dma {
	/* status quadlet */
	u32 status;
	/* reserved */
	u32 _reserved;
	/* buffer pointer */
	u32 bufptr;
	/* next descriptor pointer */
	u32 next;
	} __attribute__ ((aligned (16)));

	/* request packet */
	struct udc_request {
	/* embedded gadget ep */
	struct usb_request req;

	/* flags */
	unsigned dma_going : 1,
	dma_done : 1;
	/* phys. address */
	dma_addr_t td_phys;
	/* first dma desc. of chain */
	struct udc_data_dma *td_data;
	/* last dma desc. of chain */
	struct udc_data_dma *td_data_last;
	struct list_head queue;

	/* chain length */
	unsigned chain_len;

	};

	/* UDC specific endpoint parameters */
	struct udc_ep {
	struct usb_ep ep;
	struct udc_ep_regs __iomem *regs;
	u32 __iomem *txfifo;
	u32 __iomem *dma;
	dma_addr_t td_phys;
	dma_addr_t td_stp_dma;
	struct udc_stp_dma *td_stp;
	struct udc_data_dma *td;
	/* temp request */
	struct udc_request *req;
	unsigned req_used;
	unsigned req_completed;
	/* dummy DMA desc for BNA dummy */
	struct udc_request *bna_dummy_req;
	unsigned bna_occurred;

	/* NAK state */
	unsigned naking;

	struct udc *dev;

	/* queue for requests */
	struct list_head queue;
	unsigned halted;
	unsigned cancel_transfer;
	unsigned num : 5,
	fifo_depth : 14,
	in : 1;
	};

	/* device struct */
	struct udc {
	struct usb_gadget gadget;
	spinlock_t lock; /* protects all state */
	/* all endpoints */
	struct udc_ep ep[UDC_EP_NUM];
	struct usb_gadget_driver *driver;
	/* operational flags */
	unsigned stall_ep0in : 1,
	waiting_zlp_ack_ep0in : 1,
	set_cfg_not_acked : 1,
	data_ep_enabled : 1,
	data_ep_queued : 1,
	sys_suspended : 1,
	connected;

	u16 chiprev;

	/* registers */
	struct pci_dev *pdev;
	struct udc_csrs __iomem *csr;
	struct udc_regs __iomem *regs;
	struct udc_ep_regs __iomem *ep_regs;
	u32 __iomem *rxfifo;
	u32 __iomem *txfifo;

	/* DMA desc pools */
	struct dma_pool *data_requests;
	struct dma_pool *stp_requests;

	/* device data */
	unsigned long phys_addr;
	void __iomem *virt_addr;
	unsigned irq;

	/* states */
	u16 cur_config;
	u16 cur_intf;
	u16 cur_alt;

	/* for platform device and extcon support */
	struct device *dev;
	struct phy *udc_phy;
	struct extcon_dev *edev;
	struct extcon_specific_cable_nb extcon_nb;
	struct notifier_block nb;
	struct delayed_work drd_work;
	struct workqueue_struct *drd_wq;
	u32 conn_type;
	};

	#define to_amd5536_udc(g) (container_of((g), struct udc, gadget))

	/* setup request data */
	union udc_setup_data {
	u32 data[2];
	struct usb_ctrlrequest request;
	};

	/* Function declarations */
	int udc_enable_dev_setup_interrupts(struct udc *dev);
	int udc_mask_unused_interrupts(struct udc *dev);
	irqreturn_t udc_irq(int irq, void *pdev);
	void gadget_release(struct device *pdev);
	void empty_req_queue(struct udc_ep *ep);
	void udc_basic_init(struct udc *dev);
	void free_dma_pools(struct udc *dev);
	int init_dma_pools(struct udc *dev);
	void udc_remove(struct udc *dev);
	int udc_probe(struct udc *dev);

	/* DMA usage flag */
	static bool use_dma = 1;
	/* packet per buffer dma */
	static bool use_dma_ppb = 1;
	/* with per descr. update */
	static bool use_dma_ppb_du;
	/* full speed only mode */
	static bool use_fullspeed;

	/* module parameters */
	module_param(use_dma, bool, S_IRUGO);
	MODULE_PARM_DESC(use_dma, "true for DMA");
	module_param(use_dma_ppb, bool, S_IRUGO);
	MODULE_PARM_DESC(use_dma_ppb, "true for DMA in packet per buffer mode");
	module_param(use_dma_ppb_du, bool, S_IRUGO);
	MODULE_PARM_DESC(use_dma_ppb_du,
	"true for DMA in packet per buffer mode with descriptor update");
	module_param(use_fullspeed, bool, S_IRUGO);
	MODULE_PARM_DESC(use_fullspeed, "true for fullspeed only");
	/*
	*---------------------------------------------------------------------------
	* SET and GET bitfields in u32 values
	* via constants for mask/offset:
	* <bit_field_stub_name> is the text between
	* UDC_ and _MASK\|_OFS of appropriate
	* constant
	*
	* set bitfield value in u32 u32Val
	*/
	#define AMD_ADDBITS(u32Val, bitfield_val, bitfield_stub_name) \
	(((u32Val) & (((u32) ~((u32) bitfield_stub_name##_MASK)))) \
	\| (((bitfield_val) << ((u32) bitfield_stub_name##_OFS)) \
	& ((u32) bitfield_stub_name##_MASK)))

	/*
	* set bitfield value in zero-initialized u32 u32Val
	* => bitfield bits in u32Val are all zero
	*/
	#define AMD_INIT_SETBITS(u32Val, bitfield_val, bitfield_stub_name) \
	((u32Val) \
	\| (((bitfield_val) << ((u32) bitfield_stub_name##_OFS)) \
	& ((u32) bitfield_stub_name##_MASK)))

	/* get bitfield value from u32 u32Val */
	#define AMD_GETBITS(u32Val, bitfield_stub_name) \
	((u32Val & ((u32) bitfield_stub_name##_MASK)) \
	>> ((u32) bitfield_stub_name##_OFS))

	/* SET and GET bits in u32 values ------------------------------------------*/
	#define AMD_BIT(bit_stub_name) (1 << bit_stub_name)
	#define AMD_UNMASK_BIT(bit_stub_name) (~AMD_BIT(bit_stub_name))
	#define AMD_CLEAR_BIT(bit_stub_name) (~AMD_BIT(bit_stub_name))

	/* debug macros ------------------------------------------------------------*/

	#define DBG(udc , args...) dev_dbg(udc->dev, args)

	#ifdef UDC_VERBOSE
	#define VDBG DBG
	#else
	#define VDBG(udc , args...) do {} while (0)
	#endif

	#endif /* #ifdef AMD5536UDC_H */