51b751f112
Now that the SPDX tag is in all USB files, that identifies the license in a specific and legally-defined manner. So the extra GPL text wording can be removed as it is no longer needed at all. This is done on a quest to remove the 700+ different ways that files in the kernel describe the GPL license text. And there's unneeded stuff like the address (sometimes incorrect) for the FSF which is never needed. No copyright headers or other non-license-description text was removed. Cc: Thierry Reding <thierry.reding@gmail.com> Cc: Jonathan Hunter <jonathanh@nvidia.com> Acked-by: Peter Chen <peter.chen@nxp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
101 lines
2.4 KiB
C
101 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* udc.h - ChipIdea UDC structures
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*
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* Copyright (C) 2008 Chipidea - MIPS Technologies, Inc. All rights reserved.
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*
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* Author: David Lopo
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*/
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#ifndef __DRIVERS_USB_CHIPIDEA_UDC_H
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#define __DRIVERS_USB_CHIPIDEA_UDC_H
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#include <linux/list.h>
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#define CTRL_PAYLOAD_MAX 64
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#define RX 0 /* similar to USB_DIR_OUT but can be used as an index */
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#define TX 1 /* similar to USB_DIR_IN but can be used as an index */
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/* DMA layout of transfer descriptors */
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struct ci_hw_td {
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/* 0 */
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__le32 next;
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#define TD_TERMINATE BIT(0)
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#define TD_ADDR_MASK (0xFFFFFFEUL << 5)
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/* 1 */
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__le32 token;
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#define TD_STATUS (0x00FFUL << 0)
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#define TD_STATUS_TR_ERR BIT(3)
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#define TD_STATUS_DT_ERR BIT(5)
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#define TD_STATUS_HALTED BIT(6)
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#define TD_STATUS_ACTIVE BIT(7)
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#define TD_MULTO (0x0003UL << 10)
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#define TD_IOC BIT(15)
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#define TD_TOTAL_BYTES (0x7FFFUL << 16)
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/* 2 */
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__le32 page[5];
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#define TD_CURR_OFFSET (0x0FFFUL << 0)
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#define TD_FRAME_NUM (0x07FFUL << 0)
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#define TD_RESERVED_MASK (0x0FFFUL << 0)
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} __attribute__ ((packed, aligned(4)));
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/* DMA layout of queue heads */
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struct ci_hw_qh {
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/* 0 */
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__le32 cap;
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#define QH_IOS BIT(15)
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#define QH_MAX_PKT (0x07FFUL << 16)
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#define QH_ZLT BIT(29)
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#define QH_MULT (0x0003UL << 30)
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#define QH_ISO_MULT(x) ((x >> 11) & 0x03)
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/* 1 */
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__le32 curr;
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/* 2 - 8 */
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struct ci_hw_td td;
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/* 9 */
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__le32 RESERVED;
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struct usb_ctrlrequest setup;
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} __attribute__ ((packed, aligned(4)));
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struct td_node {
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struct list_head td;
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dma_addr_t dma;
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struct ci_hw_td *ptr;
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};
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/**
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* struct ci_hw_req - usb request representation
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* @req: request structure for gadget drivers
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* @queue: link to QH list
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* @ptr: transfer descriptor for this request
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* @dma: dma address for the transfer descriptor
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* @zptr: transfer descriptor for the zero packet
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* @zdma: dma address of the zero packet's transfer descriptor
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*/
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struct ci_hw_req {
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struct usb_request req;
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struct list_head queue;
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struct list_head tds;
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};
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#ifdef CONFIG_USB_CHIPIDEA_UDC
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int ci_hdrc_gadget_init(struct ci_hdrc *ci);
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void ci_hdrc_gadget_destroy(struct ci_hdrc *ci);
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#else
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static inline int ci_hdrc_gadget_init(struct ci_hdrc *ci)
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{
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return -ENXIO;
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}
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static inline void ci_hdrc_gadget_destroy(struct ci_hdrc *ci)
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{
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}
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#endif
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#endif /* __DRIVERS_USB_CHIPIDEA_UDC_H */
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