1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * This is used to for host and peripheral modes of the driver for
4 * Inventra (Multidrop) Highspeed Dual-Role Controllers: (M)HDRC.
5 *
6 * Board initialization should put one of these into dev->platform_data,
7 * probably on some platform_device named "musb-hdrc". It encapsulates
8 * key configuration differences between boards.
9 */
10
11#ifndef __LINUX_USB_MUSB_H
12#define __LINUX_USB_MUSB_H
13
14/* The USB role is defined by the connector used on the board, so long as
15 * standards are being followed. (Developer boards sometimes won't.)
16 */
17enum musb_mode {
18 MUSB_UNDEFINED = 0,
19 MUSB_HOST, /* A or Mini-A connector */
20 MUSB_PERIPHERAL, /* B or Mini-B connector */
21 MUSB_OTG /* Mini-AB connector */
22};
23
24struct clk;
25
26enum musb_fifo_style {
27 FIFO_RXTX,
28 FIFO_TX,
29 FIFO_RX
30} __attribute__ ((packed));
31
32enum musb_buf_mode {
33 BUF_SINGLE,
34 BUF_DOUBLE
35} __attribute__ ((packed));
36
37struct musb_fifo_cfg {
38 u8 hw_ep_num;
39 enum musb_fifo_style style;
40 enum musb_buf_mode mode;
41 u16 maxpacket;
42};
43
44#define MUSB_EP_FIFO(ep, st, m, pkt) \
45{ \
46 .hw_ep_num = ep, \
47 .style = st, \
48 .mode = m, \
49 .maxpacket = pkt, \
50}
51
52#define MUSB_EP_FIFO_SINGLE(ep, st, pkt) \
53 MUSB_EP_FIFO(ep, st, BUF_SINGLE, pkt)
54
55#define MUSB_EP_FIFO_DOUBLE(ep, st, pkt) \
56 MUSB_EP_FIFO(ep, st, BUF_DOUBLE, pkt)
57
58struct musb_hdrc_eps_bits {
59 const char name[16];
60 u8 bits;
61};
62
63struct musb_hdrc_config {
64 const struct musb_fifo_cfg *fifo_cfg; /* board fifo configuration */
65 unsigned fifo_cfg_size; /* size of the fifo configuration */
66
67 /* MUSB configuration-specific details */
68 unsigned multipoint:1; /* multipoint device */
69 unsigned dyn_fifo:1 __deprecated; /* supports dynamic fifo sizing */
70
71 /* need to explicitly de-assert the port reset after resume? */
72 unsigned host_port_deassert_reset_at_resume:1;
73
74 u8 num_eps; /* number of endpoints _with_ ep0 */
75 u8 ram_bits; /* ram address size */
76
77 u32 maximum_speed;
78};
79
80struct musb_hdrc_platform_data {
81 /* MUSB_HOST, MUSB_PERIPHERAL, or MUSB_OTG */
82 u8 mode;
83
84 /* for clk_get() */
85 const char *clock;
86
87 /* (HOST or OTG) switch VBUS on/off */
88 int (*set_vbus)(struct device *dev, int is_on);
89
90 /* (HOST or OTG) mA/2 power supplied on (default = 8mA) */
91 u8 power;
92
93 /* (PERIPHERAL) mA/2 max power consumed (default = 100mA) */
94 u8 min_power;
95
96 /* (HOST or OTG) msec/2 after VBUS on till power good */
97 u8 potpgt;
98
99 /* (HOST or OTG) program PHY for external Vbus */
100 unsigned extvbus:1;
101
102 /* MUSB configuration-specific details */
103 const struct musb_hdrc_config *config;
104
105 /* Architecture specific board data */
106 void *board_data;
107
108 /* Platform specific struct musb_ops pointer */
109 const void *platform_ops;
110};
111
112enum musb_vbus_id_status {
113 MUSB_UNKNOWN = 0,
114 MUSB_ID_GROUND,
115 MUSB_ID_FLOAT,
116 MUSB_VBUS_VALID,
117 MUSB_VBUS_OFF,
118};
119
120#if IS_ENABLED(CONFIG_USB_MUSB_HDRC)
121int musb_mailbox(enum musb_vbus_id_status status);
122#else
123static inline int musb_mailbox(enum musb_vbus_id_status status)
124{
125 return 0;
126}
127#endif
128
129/* TUSB 6010 support */
130
131#define TUSB6010_OSCCLK_60 16667 /* psec/clk @ 60.0 MHz */
132#define TUSB6010_REFCLK_24 41667 /* psec/clk @ 24.0 MHz XI */
133#define TUSB6010_REFCLK_19 52083 /* psec/clk @ 19.2 MHz CLKIN */
134
135#endif /* __LINUX_USB_MUSB_H */
136

source code of linux/include/linux/usb/musb.h