tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
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 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 unsigned soft_con:1 __deprecated; /* soft connect required */
71 unsigned utm_16:1 __deprecated; /* utm data witdh is 16 bits */
72 unsigned big_endian:1; /* true if CPU uses big-endian */
73 unsigned mult_bulk_tx:1; /* Tx ep required for multbulk pkts */
74 unsigned mult_bulk_rx:1; /* Rx ep required for multbulk pkts */
75 unsigned high_iso_tx:1; /* Tx ep required for HB iso */
76 unsigned high_iso_rx:1; /* Rx ep required for HD iso */
77 unsigned dma:1 __deprecated; /* supports DMA */
78 unsigned vendor_req:1 __deprecated; /* vendor registers required */
79
80 /* need to explicitly de-assert the port reset after resume? */
81 unsigned host_port_deassert_reset_at_resume:1;
82
83 u8 num_eps; /* number of endpoints _with_ ep0 */
84 u8 dma_channels __deprecated; /* number of dma channels */
85 u8 dyn_fifo_size; /* dynamic size in bytes */
86 u8 vendor_ctrl __deprecated; /* vendor control reg width */
87 u8 vendor_stat __deprecated; /* vendor status reg witdh */
88 u8 dma_req_chan __deprecated; /* bitmask for required dma channels */
89 u8 ram_bits; /* ram address size */
90
91 struct musb_hdrc_eps_bits *eps_bits __deprecated;
92#ifdef CONFIG_BLACKFIN
93 /* A GPIO controlling VRSEL in Blackfin */
94 unsigned int gpio_vrsel;
95 unsigned int gpio_vrsel_active;
96 /* musb CLKIN in Blackfin in MHZ */
97 unsigned char clkin;
98#endif
99 u32 maximum_speed;
100};
101
102struct musb_hdrc_platform_data {
103 /* MUSB_HOST, MUSB_PERIPHERAL, or MUSB_OTG */
104 u8 mode;
105
106 /* for clk_get() */
107 const char *clock;
108
109 /* (HOST or OTG) switch VBUS on/off */
110 int (*set_vbus)(struct device *dev, int is_on);
111
112 /* (HOST or OTG) mA/2 power supplied on (default = 8mA) */
113 u8 power;
114
115 /* (PERIPHERAL) mA/2 max power consumed (default = 100mA) */
116 u8 min_power;
117
118 /* (HOST or OTG) msec/2 after VBUS on till power good */
119 u8 potpgt;
120
121 /* (HOST or OTG) program PHY for external Vbus */
122 unsigned extvbus:1;
123
124 /* Power the device on or off */
125 int (*set_power)(int state);
126
127 /* MUSB configuration-specific details */
128 const struct musb_hdrc_config *config;
129
130 /* Architecture specific board data */
131 void *board_data;
132
133 /* Platform specific struct musb_ops pointer */
134 const void *platform_ops;
135};
136
137enum musb_vbus_id_status {
138 MUSB_UNKNOWN = 0,
139 MUSB_ID_GROUND,
140 MUSB_ID_FLOAT,
141 MUSB_VBUS_VALID,
142 MUSB_VBUS_OFF,
143};
144
145#if IS_ENABLED(CONFIG_USB_MUSB_HDRC)
146int musb_mailbox(enum musb_vbus_id_status status);
147#else
148static inline int musb_mailbox(enum musb_vbus_id_status status)
149{
150 return 0;
151}
152#endif
153
154/* TUSB 6010 support */
155
156#define TUSB6010_OSCCLK_60 16667 /* psec/clk @ 60.0 MHz */
157#define TUSB6010_REFCLK_24 41667 /* psec/clk @ 24.0 MHz XI */
158#define TUSB6010_REFCLK_19 52083 /* psec/clk @ 19.2 MHz CLKIN */
159
160#ifdef CONFIG_ARCH_OMAP2
161
162extern int __init tusb6010_setup_interface(
163 struct musb_hdrc_platform_data *data,
164 unsigned ps_refclk, unsigned waitpin,
165 unsigned async_cs, unsigned sync_cs,
166 unsigned irq, unsigned dmachan);
167
168extern int tusb6010_platform_retime(unsigned is_refclk);
169
170#endif /* OMAP2 */
171
172#endif /* __LINUX_USB_MUSB_H */