drivers/usb/gadget/omap_udc.h - linux/kernel/git/viro/vfs - Git at Google

 /*
  * omap_udc.h -- for omap 3.2 udc, with OTG support
  *
  * 2004 (C) Texas Instruments, Inc.
  * 2004 (C) David Brownell
  */

 /*
  * USB device/endpoint management registers
  */

 #define	UDC_REV				(UDC_BASE + 0x0)	/* Revision */
 #define	UDC_EP_NUM			(UDC_BASE + 0x4)	/* Which endpoint */
 #	define	UDC_SETUP_SEL		(1 << 6)
 #	define	UDC_EP_SEL		(1 << 5)
 #	define	UDC_EP_DIR		(1 << 4)
 	/* low 4 bits for endpoint number */
 #define	UDC_DATA			(UDC_BASE + 0x08)	/* Endpoint FIFO */
 #define	UDC_CTRL			(UDC_BASE + 0x0C)	/* Endpoint control */
 #	define	UDC_CLR_HALT		(1 << 7)
 #	define	UDC_SET_HALT		(1 << 6)
 #	define	UDC_CLRDATA_TOGGLE	(1 << 3)
 #	define	UDC_SET_FIFO_EN		(1 << 2)
 #	define	UDC_CLR_EP		(1 << 1)
 #	define	UDC_RESET_EP		(1 << 0)
 #define	UDC_STAT_FLG			(UDC_BASE + 0x10)	/* Endpoint status */
 #	define	UDC_NO_RXPACKET		(1 << 15)
 #	define	UDC_MISS_IN		(1 << 14)
 #	define	UDC_DATA_FLUSH		(1 << 13)
 #	define	UDC_ISO_ERR		(1 << 12)
 #	define	UDC_ISO_FIFO_EMPTY	(1 << 9)
 #	define	UDC_ISO_FIFO_FULL	(1 << 8)
 #	define	UDC_EP_HALTED		(1 << 6)
 #	define	UDC_STALL		(1 << 5)
 #	define	UDC_NAK			(1 << 4)
 #	define	UDC_ACK			(1 << 3)
 #	define	UDC_FIFO_EN		(1 << 2)
 #	define	UDC_NON_ISO_FIFO_EMPTY	(1 << 1)
 #	define	UDC_NON_ISO_FIFO_FULL	(1 << 0)
 #define	UDC_RXFSTAT			(UDC_BASE + 0x14)	/* OUT bytecount */
 #define	UDC_SYSCON1			(UDC_BASE + 0x18)	/* System config 1 */
 #	define	UDC_CFG_LOCK		(1 << 8)
 #	define	UDC_DATA_ENDIAN		(1 << 7)
 #	define	UDC_DMA_ENDIAN		(1 << 6)
 #	define	UDC_NAK_EN		(1 << 4)
 #	define	UDC_AUTODECODE_DIS	(1 << 3)
 #	define	UDC_SELF_PWR		(1 << 2)
 #	define	UDC_SOFF_DIS		(1 << 1)
 #	define	UDC_PULLUP_EN		(1 << 0)
 #define	UDC_SYSCON2			(UDC_BASE + 0x1C)	/* System config 2 */
 #	define	UDC_RMT_WKP		(1 << 6)
 #	define	UDC_STALL_CMD		(1 << 5)
 #	define	UDC_DEV_CFG		(1 << 3)
 #	define	UDC_CLR_CFG		(1 << 2)
 #define	UDC_DEVSTAT			(UDC_BASE + 0x20)	/* Device status */
 #	define	UDC_B_HNP_ENABLE	(1 << 9)
 #	define	UDC_A_HNP_SUPPORT	(1 << 8)
 #	define	UDC_A_ALT_HNP_SUPPORT	(1 << 7)
 #	define	UDC_R_WK_OK		(1 << 6)
 #	define	UDC_USB_RESET		(1 << 5)
 #	define	UDC_SUS			(1 << 4)
 #	define	UDC_CFG			(1 << 3)
 #	define	UDC_ADD			(1 << 2)
 #	define	UDC_DEF			(1 << 1)
 #	define	UDC_ATT			(1 << 0)
 #define	UDC_SOF				(UDC_BASE + 0x24)	/* Start of frame */
 #	define	UDC_FT_LOCK		(1 << 12)
 #	define	UDC_TS_OK		(1 << 11)
 #	define	UDC_TS			0x03ff
 #define	UDC_IRQ_EN			(UDC_BASE + 0x28)	/* Interrupt enable */
 #	define	UDC_SOF_IE		(1 << 7)
 #	define	UDC_EPN_RX_IE		(1 << 5)
 #	define	UDC_EPN_TX_IE		(1 << 4)
 #	define	UDC_DS_CHG_IE		(1 << 3)
 #	define	UDC_EP0_IE		(1 << 0)
 #define	UDC_DMA_IRQ_EN			(UDC_BASE + 0x2C)	/* DMA irq enable */
 	/* rx/tx dma channels numbered 1-3 not 0-2 */
 #	define	UDC_TX_DONE_IE(n)	(1 << (4 * (n) - 2))
 #	define	UDC_RX_CNT_IE(n)	(1 << (4 * (n) - 3))
 #	define	UDC_RX_EOT_IE(n)	(1 << (4 * (n) - 4))
 #define	UDC_IRQ_SRC			(UDC_BASE + 0x30)	/* Interrupt source */
 #	define	UDC_TXN_DONE		(1 << 10)
 #	define	UDC_RXN_CNT		(1 << 9)
 #	define	UDC_RXN_EOT		(1 << 8)
 #	define	UDC_IRQ_SOF		(1 << 7)
 #	define	UDC_EPN_RX		(1 << 5)
 #	define	UDC_EPN_TX		(1 << 4)
 #	define	UDC_DS_CHG		(1 << 3)
 #	define	UDC_SETUP		(1 << 2)
 #	define	UDC_EP0_RX		(1 << 1)
 #	define	UDC_EP0_TX		(1 << 0)
 #	define	UDC_IRQ_SRC_MASK	0x7bf
 #define	UDC_EPN_STAT			(UDC_BASE + 0x34)	/* EP irq status */
 #define	UDC_DMAN_STAT			(UDC_BASE + 0x38)	/* DMA irq status */
 #	define	UDC_DMA_RX_SB		(1 << 12)
 #	define	UDC_DMA_RX_SRC(x)	(((x)>>8) & 0xf)
 #	define	UDC_DMA_TX_SRC(x)	(((x)>>0) & 0xf)


 /* DMA configuration registers:  up to three channels in each direction.  */
 #define	UDC_RXDMA_CFG			(UDC_BASE + 0x40)	/* 3 eps for RX DMA */
 #	define	UDC_DMA_REQ		(1 << 12)
 #define	UDC_TXDMA_CFG			(UDC_BASE + 0x44)	/* 3 eps for TX DMA */
 #define	UDC_DATA_DMA			(UDC_BASE + 0x48)	/* rx/tx fifo addr */

 /* rx/tx dma control, numbering channels 1-3 not 0-2 */
 #define	UDC_TXDMA(chan)			(UDC_BASE + 0x50 - 4 + 4 * (chan))
 #	define UDC_TXN_EOT		(1 << 15)	/* bytes vs packets */
 #	define UDC_TXN_START		(1 << 14)	/* start transfer */
 #	define UDC_TXN_TSC		0x03ff		/* units in xfer */
 #define	UDC_RXDMA(chan)			(UDC_BASE + 0x60 - 4 + 4 * (chan))
 #	define UDC_RXN_STOP		(1 << 15)	/* enable EOT irq */
 #	define UDC_RXN_TC		0x00ff		/* packets in xfer */


 /*
  * Endpoint configuration registers (used before CFG_LOCK is set)
  * UDC_EP_TX(0) is unused
  */
 #define	UDC_EP_RX(endpoint)		(UDC_BASE + 0x80 + (endpoint)*4)
 #	define	UDC_EPN_RX_VALID	(1 << 15)
 #	define	UDC_EPN_RX_DB		(1 << 14)
 	/* buffer size in bits 13, 12 */
 #	define	UDC_EPN_RX_ISO		(1 << 11)
 	/* buffer pointer in low 11 bits */
 #define	UDC_EP_TX(endpoint)		(UDC_BASE + 0xc0 + (endpoint)*4)
 	/* same bitfields as in RX */

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

 struct omap_req {
 	struct usb_request		req;
 	struct list_head		queue;
 	unsigned			dma_bytes;
 	unsigned			mapped:1;
 };

 struct omap_ep {
 	struct usb_ep			ep;
 	struct list_head		queue;
 	unsigned long			irqs;
 	struct list_head		iso;
 	char				name[14];
 	u16				maxpacket;
 	u8				bEndpointAddress;
 	u8				bmAttributes;
 	unsigned			double_buf:1;
 	unsigned			stopped:1;
 	unsigned			fnf:1;
 	unsigned			has_dma:1;
 	u8				ackwait;
 	u8				dma_channel;
 	u16				dma_counter;
 	int				lch;
 	struct omap_udc			*udc;
 	struct timer_list		timer;
 };

 struct omap_udc {
 	struct usb_gadget		gadget;
 	struct usb_gadget_driver	*driver;
 	spinlock_t			lock;
 	struct omap_ep			ep[32];
 	u16				devstat;
 	u16				clr_halt;
 	struct usb_phy			*transceiver;
 	struct list_head		iso;
 	unsigned			softconnect:1;
 	unsigned			vbus_active:1;
 	unsigned			ep0_pending:1;
 	unsigned			ep0_in:1;
 	unsigned			ep0_set_config:1;
 	unsigned			ep0_reset_config:1;
 	unsigned			ep0_setup:1;
 	struct completion		*done;
 	struct clk			*dc_clk;
 	struct clk			*hhc_clk;
 	unsigned			clk_requested:1;
 };

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

 #ifdef VERBOSE
 #    define VDBG		DBG
 #else
 #    define VDBG(stuff...)	do{}while(0)
 #endif

 #define ERR(stuff...)		pr_err("udc: " stuff)
 #define WARNING(stuff...)	pr_warning("udc: " stuff)
 #define INFO(stuff...)		pr_info("udc: " stuff)
 #define DBG(stuff...)		pr_debug("udc: " stuff)

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

 /* MOD_CONF_CTRL_0 */
 #define VBUS_W2FC_1510		(1 << 17)	/* 0 gpio0, 1 dvdd2 pin */

 /* FUNC_MUX_CTRL_0 */
 #define	VBUS_CTRL_1510		(1 << 19)	/* 1 connected (software) */
 #define	VBUS_MODE_1510		(1 << 18)	/* 0 hardware, 1 software */

 #define	HMC_1510	((omap_readl(MOD_CONF_CTRL_0) >> 1) & 0x3f)
 #define	HMC_1610	(omap_readl(OTG_SYSCON_2) & 0x3f)
 #define	HMC		(cpu_is_omap15xx() ? HMC_1510 : HMC_1610)
	/*
	* omap_udc.h -- for omap 3.2 udc, with OTG support
	*
	* 2004 (C) Texas Instruments, Inc.
	* 2004 (C) David Brownell
	*/

	/*
	* USB device/endpoint management registers
	*/

	#define UDC_REV (UDC_BASE + 0x0) /* Revision */
	#define UDC_EP_NUM (UDC_BASE + 0x4) /* Which endpoint */
	# define UDC_SETUP_SEL (1 << 6)
	# define UDC_EP_SEL (1 << 5)
	# define UDC_EP_DIR (1 << 4)
	/* low 4 bits for endpoint number */
	#define UDC_DATA (UDC_BASE + 0x08) /* Endpoint FIFO */
	#define UDC_CTRL (UDC_BASE + 0x0C) /* Endpoint control */
	# define UDC_CLR_HALT (1 << 7)
	# define UDC_SET_HALT (1 << 6)
	# define UDC_CLRDATA_TOGGLE (1 << 3)
	# define UDC_SET_FIFO_EN (1 << 2)
	# define UDC_CLR_EP (1 << 1)
	# define UDC_RESET_EP (1 << 0)
	#define UDC_STAT_FLG (UDC_BASE + 0x10) /* Endpoint status */
	# define UDC_NO_RXPACKET (1 << 15)
	# define UDC_MISS_IN (1 << 14)
	# define UDC_DATA_FLUSH (1 << 13)
	# define UDC_ISO_ERR (1 << 12)
	# define UDC_ISO_FIFO_EMPTY (1 << 9)
	# define UDC_ISO_FIFO_FULL (1 << 8)
	# define UDC_EP_HALTED (1 << 6)
	# define UDC_STALL (1 << 5)
	# define UDC_NAK (1 << 4)
	# define UDC_ACK (1 << 3)
	# define UDC_FIFO_EN (1 << 2)
	# define UDC_NON_ISO_FIFO_EMPTY (1 << 1)
	# define UDC_NON_ISO_FIFO_FULL (1 << 0)
	#define UDC_RXFSTAT (UDC_BASE + 0x14) /* OUT bytecount */
	#define UDC_SYSCON1 (UDC_BASE + 0x18) /* System config 1 */
	# define UDC_CFG_LOCK (1 << 8)
	# define UDC_DATA_ENDIAN (1 << 7)
	# define UDC_DMA_ENDIAN (1 << 6)
	# define UDC_NAK_EN (1 << 4)
	# define UDC_AUTODECODE_DIS (1 << 3)
	# define UDC_SELF_PWR (1 << 2)
	# define UDC_SOFF_DIS (1 << 1)
	# define UDC_PULLUP_EN (1 << 0)
	#define UDC_SYSCON2 (UDC_BASE + 0x1C) /* System config 2 */
	# define UDC_RMT_WKP (1 << 6)
	# define UDC_STALL_CMD (1 << 5)
	# define UDC_DEV_CFG (1 << 3)
	# define UDC_CLR_CFG (1 << 2)
	#define UDC_DEVSTAT (UDC_BASE + 0x20) /* Device status */
	# define UDC_B_HNP_ENABLE (1 << 9)
	# define UDC_A_HNP_SUPPORT (1 << 8)
	# define UDC_A_ALT_HNP_SUPPORT (1 << 7)
	# define UDC_R_WK_OK (1 << 6)
	# define UDC_USB_RESET (1 << 5)
	# define UDC_SUS (1 << 4)
	# define UDC_CFG (1 << 3)
	# define UDC_ADD (1 << 2)
	# define UDC_DEF (1 << 1)
	# define UDC_ATT (1 << 0)
	#define UDC_SOF (UDC_BASE + 0x24) /* Start of frame */
	# define UDC_FT_LOCK (1 << 12)
	# define UDC_TS_OK (1 << 11)
	# define UDC_TS 0x03ff
	#define UDC_IRQ_EN (UDC_BASE + 0x28) /* Interrupt enable */
	# define UDC_SOF_IE (1 << 7)
	# define UDC_EPN_RX_IE (1 << 5)
	# define UDC_EPN_TX_IE (1 << 4)
	# define UDC_DS_CHG_IE (1 << 3)
	# define UDC_EP0_IE (1 << 0)
	#define UDC_DMA_IRQ_EN (UDC_BASE + 0x2C) /* DMA irq enable */
	/* rx/tx dma channels numbered 1-3 not 0-2 */
	# define UDC_TX_DONE_IE(n) (1 << (4 * (n) - 2))
	# define UDC_RX_CNT_IE(n) (1 << (4 * (n) - 3))
	# define UDC_RX_EOT_IE(n) (1 << (4 * (n) - 4))
	#define UDC_IRQ_SRC (UDC_BASE + 0x30) /* Interrupt source */
	# define UDC_TXN_DONE (1 << 10)
	# define UDC_RXN_CNT (1 << 9)
	# define UDC_RXN_EOT (1 << 8)
	# define UDC_IRQ_SOF (1 << 7)
	# define UDC_EPN_RX (1 << 5)
	# define UDC_EPN_TX (1 << 4)
	# define UDC_DS_CHG (1 << 3)
	# define UDC_SETUP (1 << 2)
	# define UDC_EP0_RX (1 << 1)
	# define UDC_EP0_TX (1 << 0)
	# define UDC_IRQ_SRC_MASK 0x7bf
	#define UDC_EPN_STAT (UDC_BASE + 0x34) /* EP irq status */
	#define UDC_DMAN_STAT (UDC_BASE + 0x38) /* DMA irq status */
	# define UDC_DMA_RX_SB (1 << 12)
	# define UDC_DMA_RX_SRC(x) (((x)>>8) & 0xf)
	# define UDC_DMA_TX_SRC(x) (((x)>>0) & 0xf)


	/* DMA configuration registers: up to three channels in each direction. */
	#define UDC_RXDMA_CFG (UDC_BASE + 0x40) /* 3 eps for RX DMA */
	# define UDC_DMA_REQ (1 << 12)
	#define UDC_TXDMA_CFG (UDC_BASE + 0x44) /* 3 eps for TX DMA */
	#define UDC_DATA_DMA (UDC_BASE + 0x48) /* rx/tx fifo addr */

	/* rx/tx dma control, numbering channels 1-3 not 0-2 */
	#define UDC_TXDMA(chan) (UDC_BASE + 0x50 - 4 + 4 * (chan))
	# define UDC_TXN_EOT (1 << 15) /* bytes vs packets */
	# define UDC_TXN_START (1 << 14) /* start transfer */
	# define UDC_TXN_TSC 0x03ff /* units in xfer */
	#define UDC_RXDMA(chan) (UDC_BASE + 0x60 - 4 + 4 * (chan))
	# define UDC_RXN_STOP (1 << 15) /* enable EOT irq */
	# define UDC_RXN_TC 0x00ff /* packets in xfer */


	/*
	* Endpoint configuration registers (used before CFG_LOCK is set)
	* UDC_EP_TX(0) is unused
	*/
	#define UDC_EP_RX(endpoint) (UDC_BASE + 0x80 + (endpoint)*4)
	# define UDC_EPN_RX_VALID (1 << 15)
	# define UDC_EPN_RX_DB (1 << 14)
	/* buffer size in bits 13, 12 */
	# define UDC_EPN_RX_ISO (1 << 11)
	/* buffer pointer in low 11 bits */
	#define UDC_EP_TX(endpoint) (UDC_BASE + 0xc0 + (endpoint)*4)
	/* same bitfields as in RX */

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

	struct omap_req {
	struct usb_request req;
	struct list_head queue;
	unsigned dma_bytes;
	unsigned mapped:1;
	};

	struct omap_ep {
	struct usb_ep ep;
	struct list_head queue;
	unsigned long irqs;
	struct list_head iso;
	char name[14];
	u16 maxpacket;
	u8 bEndpointAddress;
	u8 bmAttributes;
	unsigned double_buf:1;
	unsigned stopped:1;
	unsigned fnf:1;
	unsigned has_dma:1;
	u8 ackwait;
	u8 dma_channel;
	u16 dma_counter;
	int lch;
	struct omap_udc *udc;
	struct timer_list timer;
	};

	struct omap_udc {
	struct usb_gadget gadget;
	struct usb_gadget_driver *driver;
	spinlock_t lock;
	struct omap_ep ep[32];
	u16 devstat;
	u16 clr_halt;
	struct usb_phy *transceiver;
	struct list_head iso;
	unsigned softconnect:1;
	unsigned vbus_active:1;
	unsigned ep0_pending:1;
	unsigned ep0_in:1;
	unsigned ep0_set_config:1;
	unsigned ep0_reset_config:1;
	unsigned ep0_setup:1;
	struct completion *done;
	struct clk *dc_clk;
	struct clk *hhc_clk;
	unsigned clk_requested:1;
	};

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

	#ifdef VERBOSE
	# define VDBG DBG
	#else
	# define VDBG(stuff...) do{}while(0)
	#endif

	#define ERR(stuff...) pr_err("udc: " stuff)
	#define WARNING(stuff...) pr_warning("udc: " stuff)
	#define INFO(stuff...) pr_info("udc: " stuff)
	#define DBG(stuff...) pr_debug("udc: " stuff)

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

	/* MOD_CONF_CTRL_0 */
	#define VBUS_W2FC_1510 (1 << 17) /* 0 gpio0, 1 dvdd2 pin */

	/* FUNC_MUX_CTRL_0 */
	#define VBUS_CTRL_1510 (1 << 19) /* 1 connected (software) */
	#define VBUS_MODE_1510 (1 << 18) /* 0 hardware, 1 software */

	#define HMC_1510 ((omap_readl(MOD_CONF_CTRL_0) >> 1) & 0x3f)
	#define HMC_1610 (omap_readl(OTG_SYSCON_2) & 0x3f)
	#define HMC (cpu_is_omap15xx() ? HMC_1510 : HMC_1610)