1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
209 lines
6.5 KiB
C
209 lines
6.5 KiB
C
/*
|
|
* 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_REG(offset) __REG16(UDC_BASE + (offset))
|
|
|
|
#define UDC_REV_REG UDC_REG(0x0) /* Revision */
|
|
#define UDC_EP_NUM_REG UDC_REG(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_REG UDC_REG(0x08) /* Endpoint FIFO */
|
|
#define UDC_CTRL_REG UDC_REG(0x0C) /* Endpoint control */
|
|
# define UDC_CLR_HALT (1 << 7)
|
|
# define UDC_SET_HALT (1 << 6)
|
|
# define UDC_SET_FIFO_EN (1 << 2)
|
|
# define UDC_CLR_EP (1 << 1)
|
|
# define UDC_RESET_EP (1 << 0)
|
|
#define UDC_STAT_FLG_REG UDC_REG(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_REG UDC_REG(0x14) /* OUT bytecount */
|
|
#define UDC_SYSCON1_REG UDC_REG(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_REG UDC_REG(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_REG UDC_REG(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_REG UDC_REG(0x24) /* Start of frame */
|
|
# define UDC_FT_LOCK (1 << 12)
|
|
# define UDC_TS_OK (1 << 11)
|
|
# define UDC_TS 0x03ff
|
|
#define UDC_IRQ_EN_REG UDC_REG(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_REG UDC_REG(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_REG UDC_REG(0x30) /* Interrupt source */
|
|
# define UDC_TXN_DONE (1 << 10)
|
|
# define UDC_RXN_CNT (1 << 9)
|
|
# define UDC_RXN_EOT (1 << 8)
|
|
# define UDC_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_REG UDC_REG(0x34) /* EP irq status */
|
|
#define UDC_DMAN_STAT_REG UDC_REG(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_REG UDC_REG(0x40) /* 3 eps for RX DMA */
|
|
#define UDC_TXDMA_CFG_REG UDC_REG(0x44) /* 3 eps for TX DMA */
|
|
#define UDC_DATA_DMA_REG UDC_REG(0x48) /* rx/tx fifo addr */
|
|
|
|
/* rx/tx dma control, numbering channels 1-3 not 0-2 */
|
|
#define UDC_TXDMA_REG(chan) UDC_REG(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_REG(chan) UDC_REG(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_REG(0) is unused
|
|
*/
|
|
#define UDC_EP_RX_REG(endpoint) UDC_REG(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_REG(endpoint) UDC_REG(0xc0 + (endpoint)*4)
|
|
/* same bitfields as in RX_REG */
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
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;
|
|
const struct usb_endpoint_descriptor *desc;
|
|
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;
|
|
struct otg_transceiver *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;
|
|
};
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
#ifdef DEBUG
|
|
#define DBG(stuff...) printk(KERN_DEBUG "udc: " stuff)
|
|
#else
|
|
#define DBG(stuff...) do{}while(0)
|
|
#endif
|
|
|
|
#ifdef VERBOSE
|
|
# define VDBG DBG
|
|
#else
|
|
# define VDBG(stuff...) do{}while(0)
|
|
#endif
|
|
|
|
#define ERR(stuff...) printk(KERN_ERR "udc: " stuff)
|
|
#define WARN(stuff...) printk(KERN_WARNING "udc: " stuff)
|
|
#define INFO(stuff...) printk(KERN_INFO "udc: " stuff)
|
|
|
|
/*-------------------------------------------------------------------------*/
|
|
|
|
#define MOD_CONF_CTRL_0_REG __REG32(MOD_CONF_CTRL_0)
|
|
#define VBUS_W2FC_1510 (1 << 17) /* 0 gpio0, 1 dvdd2 pin */
|
|
|
|
#define FUNC_MUX_CTRL_0_REG __REG32(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 ((MOD_CONF_CTRL_0_REG >> 1) & 0x3f)
|
|
#define HMC_1610 (OTG_SYSCON_2_REG & 0x3f)
|
|
#define HMC (cpu_is_omap15xx() ? HMC_1510 : HMC_1610)
|
|
|