1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * Intel PXA25x on-chip full speed USB device controller
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * Copyright (C) 2003 Robert Schwebel <r.schwebel@pengutronix.de>, Pengutronix
5*4882a593Smuzhiyun * Copyright (C) 2003 David Brownell
6*4882a593Smuzhiyun * Copyright (C) 2012 Lukasz Dalek <luk0104@gmail.com>
7*4882a593Smuzhiyun *
8*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+
9*4882a593Smuzhiyun */
10*4882a593Smuzhiyun
11*4882a593Smuzhiyun #ifndef __LINUX_USB_GADGET_PXA25X_H
12*4882a593Smuzhiyun #define __LINUX_USB_GADGET_PXA25X_H
13*4882a593Smuzhiyun
14*4882a593Smuzhiyun #include <linux/types.h>
15*4882a593Smuzhiyun #include <asm/arch/regs-usb.h>
16*4882a593Smuzhiyun
17*4882a593Smuzhiyun /*
18*4882a593Smuzhiyun * Prefetching support - only ARMv5.
19*4882a593Smuzhiyun */
20*4882a593Smuzhiyun
21*4882a593Smuzhiyun #ifdef ARCH_HAS_PREFETCH
prefetch(const void * ptr)22*4882a593Smuzhiyun static inline void prefetch(const void *ptr)
23*4882a593Smuzhiyun {
24*4882a593Smuzhiyun __asm__ __volatile__(
25*4882a593Smuzhiyun "pld\t%a0"
26*4882a593Smuzhiyun :
27*4882a593Smuzhiyun : "p" (ptr)
28*4882a593Smuzhiyun : "cc");
29*4882a593Smuzhiyun }
30*4882a593Smuzhiyun
31*4882a593Smuzhiyun #define prefetchw(ptr) prefetch(ptr)
32*4882a593Smuzhiyun #endif /* ARCH_HAS_PREFETCH */
33*4882a593Smuzhiyun
34*4882a593Smuzhiyun /*-------------------------------------------------------------------------*/
35*4882a593Smuzhiyun
36*4882a593Smuzhiyun #define UDC_REGS ((struct pxa25x_udc_regs *)PXA25X_UDC_BASE)
37*4882a593Smuzhiyun
38*4882a593Smuzhiyun /*-------------------------------------------------------------------------*/
39*4882a593Smuzhiyun
40*4882a593Smuzhiyun struct pxa2xx_udc_mach_info {
41*4882a593Smuzhiyun int (*udc_is_connected)(void); /* do we see host? */
42*4882a593Smuzhiyun void (*udc_command)(int cmd);
43*4882a593Smuzhiyun #define PXA2XX_UDC_CMD_CONNECT 0 /* let host see us */
44*4882a593Smuzhiyun #define PXA2XX_UDC_CMD_DISCONNECT 1 /* so host won't see us */
45*4882a593Smuzhiyun };
46*4882a593Smuzhiyun
47*4882a593Smuzhiyun struct pxa25x_udc;
48*4882a593Smuzhiyun
49*4882a593Smuzhiyun struct pxa25x_ep {
50*4882a593Smuzhiyun struct usb_ep ep;
51*4882a593Smuzhiyun struct pxa25x_udc *dev;
52*4882a593Smuzhiyun
53*4882a593Smuzhiyun const struct usb_endpoint_descriptor *desc;
54*4882a593Smuzhiyun struct list_head queue;
55*4882a593Smuzhiyun unsigned long pio_irqs;
56*4882a593Smuzhiyun
57*4882a593Smuzhiyun unsigned short fifo_size;
58*4882a593Smuzhiyun u8 bEndpointAddress;
59*4882a593Smuzhiyun u8 bmAttributes;
60*4882a593Smuzhiyun
61*4882a593Smuzhiyun unsigned stopped:1;
62*4882a593Smuzhiyun
63*4882a593Smuzhiyun /* UDCCS = UDC Control/Status for this EP
64*4882a593Smuzhiyun * UBCR = UDC Byte Count Remaining (contents of OUT fifo)
65*4882a593Smuzhiyun * UDDR = UDC Endpoint Data Register (the fifo)
66*4882a593Smuzhiyun * DRCM = DMA Request Channel Map
67*4882a593Smuzhiyun */
68*4882a593Smuzhiyun u32 *reg_udccs;
69*4882a593Smuzhiyun u32 *reg_ubcr;
70*4882a593Smuzhiyun u32 *reg_uddr;
71*4882a593Smuzhiyun };
72*4882a593Smuzhiyun
73*4882a593Smuzhiyun struct pxa25x_request {
74*4882a593Smuzhiyun struct usb_request req;
75*4882a593Smuzhiyun struct list_head queue;
76*4882a593Smuzhiyun };
77*4882a593Smuzhiyun
78*4882a593Smuzhiyun enum ep0_state {
79*4882a593Smuzhiyun EP0_IDLE,
80*4882a593Smuzhiyun EP0_IN_DATA_PHASE,
81*4882a593Smuzhiyun EP0_OUT_DATA_PHASE,
82*4882a593Smuzhiyun EP0_END_XFER,
83*4882a593Smuzhiyun EP0_STALL,
84*4882a593Smuzhiyun };
85*4882a593Smuzhiyun
86*4882a593Smuzhiyun #define EP0_FIFO_SIZE 16U
87*4882a593Smuzhiyun #define BULK_FIFO_SIZE 64U
88*4882a593Smuzhiyun #define ISO_FIFO_SIZE 256U
89*4882a593Smuzhiyun #define INT_FIFO_SIZE 8U
90*4882a593Smuzhiyun
91*4882a593Smuzhiyun struct udc_stats {
92*4882a593Smuzhiyun struct ep0stats {
93*4882a593Smuzhiyun unsigned long ops;
94*4882a593Smuzhiyun unsigned long bytes;
95*4882a593Smuzhiyun } read, write;
96*4882a593Smuzhiyun unsigned long irqs;
97*4882a593Smuzhiyun };
98*4882a593Smuzhiyun
99*4882a593Smuzhiyun #ifdef CONFIG_USB_PXA25X_SMALL
100*4882a593Smuzhiyun /* when memory's tight, SMALL config saves code+data. */
101*4882a593Smuzhiyun #define PXA_UDC_NUM_ENDPOINTS 3
102*4882a593Smuzhiyun #endif
103*4882a593Smuzhiyun
104*4882a593Smuzhiyun #ifndef PXA_UDC_NUM_ENDPOINTS
105*4882a593Smuzhiyun #define PXA_UDC_NUM_ENDPOINTS 16
106*4882a593Smuzhiyun #endif
107*4882a593Smuzhiyun
108*4882a593Smuzhiyun struct pxa25x_watchdog {
109*4882a593Smuzhiyun unsigned running:1;
110*4882a593Smuzhiyun ulong period;
111*4882a593Smuzhiyun ulong base;
112*4882a593Smuzhiyun struct pxa25x_udc *udc;
113*4882a593Smuzhiyun
114*4882a593Smuzhiyun void (*function)(struct pxa25x_udc *udc);
115*4882a593Smuzhiyun };
116*4882a593Smuzhiyun
117*4882a593Smuzhiyun struct pxa25x_udc {
118*4882a593Smuzhiyun struct usb_gadget gadget;
119*4882a593Smuzhiyun struct usb_gadget_driver *driver;
120*4882a593Smuzhiyun struct pxa25x_udc_regs *regs;
121*4882a593Smuzhiyun
122*4882a593Smuzhiyun enum ep0_state ep0state;
123*4882a593Smuzhiyun struct udc_stats stats;
124*4882a593Smuzhiyun unsigned got_irq:1,
125*4882a593Smuzhiyun pullup:1,
126*4882a593Smuzhiyun has_cfr:1,
127*4882a593Smuzhiyun req_pending:1,
128*4882a593Smuzhiyun req_std:1,
129*4882a593Smuzhiyun req_config:1,
130*4882a593Smuzhiyun active:1;
131*4882a593Smuzhiyun
132*4882a593Smuzhiyun struct clk *clk;
133*4882a593Smuzhiyun struct pxa2xx_udc_mach_info *mach;
134*4882a593Smuzhiyun u64 dma_mask;
135*4882a593Smuzhiyun struct pxa25x_ep ep[PXA_UDC_NUM_ENDPOINTS];
136*4882a593Smuzhiyun
137*4882a593Smuzhiyun struct pxa25x_watchdog watchdog;
138*4882a593Smuzhiyun };
139*4882a593Smuzhiyun
140*4882a593Smuzhiyun /*-------------------------------------------------------------------------*/
141*4882a593Smuzhiyun
142*4882a593Smuzhiyun static struct pxa25x_udc *the_controller;
143*4882a593Smuzhiyun
144*4882a593Smuzhiyun /*-------------------------------------------------------------------------*/
145*4882a593Smuzhiyun
146*4882a593Smuzhiyun #ifndef DEBUG
147*4882a593Smuzhiyun # define NOISY 0
148*4882a593Smuzhiyun #endif
149*4882a593Smuzhiyun
150*4882a593Smuzhiyun #endif /* __LINUX_USB_GADGET_PXA25X_H */
151