diff options
Diffstat (limited to 'drivers/usb/chipidea/udc.h')
| -rw-r--r-- | drivers/usb/chipidea/udc.h | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/drivers/usb/chipidea/udc.h b/drivers/usb/chipidea/udc.h new file mode 100644 index 000000000000..4ff2384d7ca8 --- /dev/null +++ b/drivers/usb/chipidea/udc.h @@ -0,0 +1,93 @@ +/* + * udc.h - ChipIdea UDC structures + * + * Copyright (C) 2008 Chipidea - MIPS Technologies, Inc. All rights reserved. + * + * Author: David Lopo + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __DRIVERS_USB_CHIPIDEA_UDC_H +#define __DRIVERS_USB_CHIPIDEA_UDC_H + +#include <linux/list.h> + +#define CTRL_PAYLOAD_MAX 64 +#define RX 0 /* similar to USB_DIR_OUT but can be used as an index */ +#define TX 1 /* similar to USB_DIR_IN but can be used as an index */ + +/* DMA layout of transfer descriptors */ +struct ci13xxx_td { + /* 0 */ + u32 next; +#define TD_TERMINATE BIT(0) +#define TD_ADDR_MASK (0xFFFFFFEUL << 5) + /* 1 */ + u32 token; +#define TD_STATUS (0x00FFUL << 0) +#define TD_STATUS_TR_ERR BIT(3) +#define TD_STATUS_DT_ERR BIT(5) +#define TD_STATUS_HALTED BIT(6) +#define TD_STATUS_ACTIVE BIT(7) +#define TD_MULTO (0x0003UL << 10) +#define TD_IOC BIT(15) +#define TD_TOTAL_BYTES (0x7FFFUL << 16) + /* 2 */ + u32 page[5]; +#define TD_CURR_OFFSET (0x0FFFUL << 0) +#define TD_FRAME_NUM (0x07FFUL << 0) +#define TD_RESERVED_MASK (0x0FFFUL << 0) +} __attribute__ ((packed)); + +/* DMA layout of queue heads */ +struct ci13xxx_qh { + /* 0 */ + u32 cap; +#define QH_IOS BIT(15) +#define QH_MAX_PKT (0x07FFUL << 16) +#define QH_ZLT BIT(29) +#define QH_MULT (0x0003UL << 30) + /* 1 */ + u32 curr; + /* 2 - 8 */ + struct ci13xxx_td td; + /* 9 */ + u32 RESERVED; + struct usb_ctrlrequest setup; +} __attribute__ ((packed)); + +/** + * struct ci13xxx_req - usb request representation + * @req: request structure for gadget drivers + * @queue: link to QH list + * @ptr: transfer descriptor for this request + * @dma: dma address for the transfer descriptor + * @zptr: transfer descriptor for the zero packet + * @zdma: dma address of the zero packet's transfer descriptor + */ +struct ci13xxx_req { + struct usb_request req; + struct list_head queue; + struct ci13xxx_td *ptr; + dma_addr_t dma; + struct ci13xxx_td *zptr; + dma_addr_t zdma; +}; + +#ifdef CONFIG_USB_CHIPIDEA_UDC + +int ci_hdrc_gadget_init(struct ci13xxx *ci); + +#else + +static inline int ci_hdrc_gadget_init(struct ci13xxx *ci) +{ + return -ENXIO; +} + +#endif + +#endif /* __DRIVERS_USB_CHIPIDEA_UDC_H */ |