cregit-Linux how code gets into the kernel

Release 4.7 drivers/usb/gadget/udc/omap_udc.h

/*
 * 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)


Overall Contributors

PersonTokensPropCommitsCommitProp
david brownelldavid brownell68292.79%666.67%
tony lindgrentony lindgren516.94%111.11%
heikki krogerusheikki krogerus10.14%111.11%
arjan van de venarjan van de ven10.14%111.11%
Total735100.00%9100.00%
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