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