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Diffstat (limited to 'drivers/usb/dwc3/gadget.h')
| -rw-r--r-- | drivers/usb/dwc3/gadget.h | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/gadget.h b/drivers/usb/dwc3/gadget.h new file mode 100644 index 000000000000..71145a449d99 --- /dev/null +++ b/drivers/usb/dwc3/gadget.h @@ -0,0 +1,211 @@ +/** + * gadget.h - DesignWare USB3 DRD Gadget Header + * + * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com + * + * Authors: Felipe Balbi <balbi@ti.com>, + * Sebastian Andrzej Siewior <bigeasy@linutronix.de> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions, and the following disclaimer, + * without modification. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The names of the above-listed copyright holders may not be used + * to endorse or promote products derived from this software without + * specific prior written permission. + * + * ALTERNATIVELY, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2, as published by the Free + * Software Foundation. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS + * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, + * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef __DRIVERS_USB_DWC3_GADGET_H +#define __DRIVERS_USB_DWC3_GADGET_H + +#include <linux/list.h> +#include <linux/usb/gadget.h> +#include "io.h" + +struct dwc3; +#define to_dwc3_ep(ep) (container_of(ep, struct dwc3_ep, endpoint)) +#define gadget_to_dwc(g) (container_of(g, struct dwc3, gadget)) + +/* DEPCFG parameter 1 */ +#define DWC3_DEPCFG_INT_NUM(n) ((n) << 0) +#define DWC3_DEPCFG_XFER_COMPLETE_EN (1 << 8) +#define DWC3_DEPCFG_XFER_IN_PROGRESS_EN (1 << 9) +#define DWC3_DEPCFG_XFER_NOT_READY_EN (1 << 10) +#define DWC3_DEPCFG_FIFO_ERROR_EN (1 << 11) +#define DWC3_DEPCFG_STREAM_EVENT_EN (1 << 13) +#define DWC3_DEPCFG_BINTERVAL_M1(n) ((n) << 16) +#define DWC3_DEPCFG_STREAM_CAPABLE (1 << 24) +#define DWC3_DEPCFG_EP_NUMBER(n) ((n) << 25) +#define DWC3_DEPCFG_BULK_BASED (1 << 30) +#define DWC3_DEPCFG_FIFO_BASED (1 << 31) + +/* DEPCFG parameter 0 */ +#define DWC3_DEPCFG_EP_TYPE(n) ((n) << 1) +#define DWC3_DEPCFG_MAX_PACKET_SIZE(n) ((n) << 3) +#define DWC3_DEPCFG_FIFO_NUMBER(n) ((n) << 17) +#define DWC3_DEPCFG_BURST_SIZE(n) ((n) << 22) +#define DWC3_DEPCFG_DATA_SEQ_NUM(n) ((n) << 26) +#define DWC3_DEPCFG_IGN_SEQ_NUM (1 << 31) + +/* DEPXFERCFG parameter 0 */ +#define DWC3_DEPXFERCFG_NUM_XFER_RES(n) ((n) & 0xffff) + +struct dwc3_gadget_ep_cmd_params { + u32 param2; + u32 param1; + u32 param0; +}; + +/* -------------------------------------------------------------------------- */ + +struct dwc3_request { + struct usb_request request; + struct list_head list; + struct dwc3_ep *dep; + + u8 epnum; + struct dwc3_trb_hw *trb; + dma_addr_t trb_dma; + + unsigned direction:1; + unsigned mapped:1; + unsigned queued:1; +}; +#define to_dwc3_request(r) (container_of(r, struct dwc3_request, request)) + +static inline struct dwc3_request *next_request(struct list_head *list) +{ + if (list_empty(list)) + return NULL; + + return list_first_entry(list, struct dwc3_request, list); +} + +static inline void dwc3_gadget_move_request_queued(struct dwc3_request *req) +{ + struct dwc3_ep *dep = req->dep; + + req->queued = true; + list_move_tail(&req->list, &dep->req_queued); +} + +#if defined(CONFIG_USB_GADGET_DWC3) || defined(CONFIG_USB_GADGET_DWC3_MODULE) +int dwc3_gadget_init(struct dwc3 *dwc); +void dwc3_gadget_exit(struct dwc3 *dwc); +#else +static inline int dwc3_gadget_init(struct dwc3 *dwc) { return 0; } +static inline void dwc3_gadget_exit(struct dwc3 *dwc) { } +static inline int dwc3_send_gadget_ep_cmd(struct dwc3 *dwc, unsigned ep, + unsigned cmd, struct dwc3_gadget_ep_cmd_params *params) +{ + return 0; +} +#endif + +void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req, + int status); + +void dwc3_ep0_interrupt(struct dwc3 *dwc, const struct dwc3_event_depevt *event); +void dwc3_ep0_out_start(struct dwc3 *dwc); +int dwc3_gadget_ep0_queue(struct usb_ep *ep, struct usb_request *request, + gfp_t gfp_flags); +int __dwc3_gadget_ep_set_halt(struct dwc3_ep *dep, int value); +int dwc3_send_gadget_ep_cmd(struct dwc3 *dwc, unsigned ep, + unsigned cmd, struct dwc3_gadget_ep_cmd_params *params); +void dwc3_map_buffer_to_dma(struct dwc3_request *req); +void dwc3_unmap_buffer_from_dma(struct dwc3_request *req); + +/** + * dwc3_gadget_ep_get_transfer_index - Gets transfer index from HW + * @dwc: DesignWare USB3 Pointer + * @number: DWC endpoint number + * + * Caller should take care of locking + */ +static inline u32 dwc3_gadget_ep_get_transfer_index(struct dwc3 *dwc, u8 number) +{ + u32 res_id; + + res_id = dwc3_readl(dwc->regs, DWC3_DEPCMD(number)); + + return DWC3_DEPCMD_GET_RSC_IDX(res_id); +} + +/** + * dwc3_gadget_event_string - returns event name + * @event: the event code + */ +static inline const char *dwc3_gadget_event_string(u8 event) +{ + switch (event) { + case DWC3_DEVICE_EVENT_DISCONNECT: + return "Disconnect"; + case DWC3_DEVICE_EVENT_RESET: + return "Reset"; + case DWC3_DEVICE_EVENT_CONNECT_DONE: + return "Connection Done"; + case DWC3_DEVICE_EVENT_LINK_STATUS_CHANGE: + return "Link Status Change"; + case DWC3_DEVICE_EVENT_WAKEUP: + return "WakeUp"; + case DWC3_DEVICE_EVENT_EOPF: + return "End-Of-Frame"; + case DWC3_DEVICE_EVENT_SOF: + return "Start-Of-Frame"; + case DWC3_DEVICE_EVENT_ERRATIC_ERROR: + return "Erratic Error"; + case DWC3_DEVICE_EVENT_CMD_CMPL: + return "Command Complete"; + case DWC3_DEVICE_EVENT_OVERFLOW: + return "Overflow"; + } + + return "UNKNOWN"; +} + +/** + * dwc3_ep_event_string - returns event name + * @event: then event code + */ +static inline const char *dwc3_ep_event_string(u8 event) +{ + switch (event) { + case DWC3_DEPEVT_XFERCOMPLETE: + return "Transfer Complete"; + case DWC3_DEPEVT_XFERINPROGRESS: + return "Transfer In-Progress"; + case DWC3_DEPEVT_XFERNOTREADY: + return "Transfer Not Ready"; + case DWC3_DEPEVT_RXTXFIFOEVT: + return "FIFO"; + case DWC3_DEPEVT_STREAMEVT: + return "Stream"; + case DWC3_DEPEVT_EPCMDCMPLT: + return "Endpoint Command Complete"; + } + + return "UNKNOWN"; +} + +#endif /* __DRIVERS_USB_DWC3_GADGET_H */ |