1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * Designware DWC2 on-chip full/high speed USB device controllers 4 * Copyright (C) 2005 for Samsung Electronics 5 */ 6 7 #ifndef __DWC2_UDC_OTG_PRIV__ 8 #define __DWC2_UDC_OTG_PRIV__ 9 10 #include <linux/errno.h> 11 #include <linux/sizes.h> 12 #include <linux/usb/ch9.h> 13 #include <linux/usb/gadget.h> 14 #include <linux/list.h> 15 #include <usb/dwc2_udc.h> 16 17 /*-------------------------------------------------------------------------*/ 18 /* DMA bounce buffer size, 16K is enough even for mass storage */ 19 #define DMA_BUFFER_SIZE (16*SZ_1K) 20 21 #define EP0_FIFO_SIZE 64 22 #define EP_FIFO_SIZE 512 23 #define EP_FIFO_SIZE2 1024 24 /* ep0-control, ep1in-bulk, ep2out-bulk, ep3in-int */ 25 #define DWC2_MAX_ENDPOINTS 4 26 27 #define WAIT_FOR_SETUP 0 28 #define DATA_STATE_XMIT 1 29 #define DATA_STATE_NEED_ZLP 2 30 #define WAIT_FOR_OUT_STATUS 3 31 #define DATA_STATE_RECV 4 32 #define WAIT_FOR_COMPLETE 5 33 #define WAIT_FOR_OUT_COMPLETE 6 34 #define WAIT_FOR_IN_COMPLETE 7 35 #define WAIT_FOR_NULL_COMPLETE 8 36 37 #define TEST_J_SEL 0x1 38 #define TEST_K_SEL 0x2 39 #define TEST_SE0_NAK_SEL 0x3 40 #define TEST_PACKET_SEL 0x4 41 #define TEST_FORCE_ENABLE_SEL 0x5 42 43 /* ************************************************************************* */ 44 /* IO 45 */ 46 47 enum ep_type { 48 ep_control, ep_bulk_in, ep_bulk_out, ep_interrupt 49 }; 50 51 struct dwc2_ep { 52 struct usb_ep ep; 53 struct dwc2_udc *dev; 54 55 const struct usb_endpoint_descriptor *desc; 56 struct list_head queue; 57 unsigned long pio_irqs; 58 int len; 59 void *dma_buf; 60 61 u8 stopped; 62 u8 bEndpointAddress; 63 u8 bmAttributes; 64 65 enum ep_type ep_type; 66 int fifo_num; 67 }; 68 69 struct dwc2_request { 70 struct usb_request req; 71 struct list_head queue; 72 }; 73 74 struct dwc2_udc { 75 struct usb_gadget gadget; 76 struct usb_gadget_driver *driver; 77 78 struct dwc2_plat_otg_data *pdata; 79 80 int ep0state; 81 struct dwc2_ep ep[DWC2_MAX_ENDPOINTS]; 82 83 unsigned char usb_address; 84 85 unsigned req_pending:1, req_std:1; 86 }; 87 88 #define ep_is_in(EP) (((EP)->bEndpointAddress&USB_DIR_IN) == USB_DIR_IN) 89 #define ep_index(EP) ((EP)->bEndpointAddress&0xF) 90 #define ep_maxpacket(EP) ((EP)->ep.maxpacket) 91 92 void otg_phy_init(struct dwc2_udc *dev); 93 void otg_phy_off(struct dwc2_udc *dev); 94 95 #endif /* __DWC2_UDC_OTG_PRIV__ */ 96