summaryrefslogtreecommitdiff
path: root/include/linux/usb/renesas_usbhs.h
blob: 372898d9eeb00bbc3ae034717c0d9335da015e49 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
// SPDX-License-Identifier: GPL-1.0+
/*
 * Renesas USB
 *
 * Copyright (C) 2011 Renesas Solutions Corp.
 * Copyright (C) 2019 Renesas Electronics Corporation
 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
 */
#ifndef RENESAS_USB_H
#define RENESAS_USB_H
#include <linux/notifier.h>
#include <linux/platform_device.h>
#include <linux/usb/ch9.h>

/*
 * module type
 *
 * it will be return value from get_id
 */
enum {
	USBHS_HOST = 0,
	USBHS_GADGET,
	USBHS_MAX,
};

/*
 * callback functions for platform
 *
 * These functions are called from driver for platform
 */
struct renesas_usbhs_platform_callback {

	/*
	 * option:
	 *
	 * Hardware init function for platform.
	 * it is called when driver was probed.
	 */
	int (*hardware_init)(struct platform_device *pdev);

	/*
	 * option:
	 *
	 * Hardware exit function for platform.
	 * it is called when driver was removed
	 */
	int (*hardware_exit)(struct platform_device *pdev);

	/*
	 * option:
	 *
	 * for board specific clock control
	 */
	int (*power_ctrl)(struct platform_device *pdev,
			   void __iomem *base, int enable);

	/*
	 * option:
	 *
	 * Phy reset for platform
	 */
	int (*phy_reset)(struct platform_device *pdev);

	/*
	 * get USB ID function
	 *  - USBHS_HOST
	 *  - USBHS_GADGET
	 */
	int (*get_id)(struct platform_device *pdev);

	/*
	 * get VBUS status function.
	 */
	int (*get_vbus)(struct platform_device *pdev);

	/*
	 * option:
	 *
	 * VBUS control is needed for Host
	 */
	int (*set_vbus)(struct platform_device *pdev, int enable);

	/*
	 * option:
	 * extcon notifier to set host/peripheral mode.
	 */
	int (*notifier)(struct notifier_block *nb, unsigned long event,
			void *data);
};

/*
 * parameters for renesas usbhs
 *
 * some register needs USB chip specific parameters.
 * This struct show it to driver
 */

struct renesas_usbhs_driver_pipe_config {
	u8 type;	/* USB_ENDPOINT_XFER_xxx */
	u16 bufsize;
	u8 bufnum;
	bool double_buf;
};
#define RENESAS_USBHS_PIPE(_type, _size, _num, _double_buf)	{	\
			.type = (_type),		\
			.bufsize = (_size),		\
			.bufnum = (_num),		\
			.double_buf = (_double_buf),	\
	}

struct renesas_usbhs_driver_param {
	/*
	 * pipe settings
	 */
	struct renesas_usbhs_driver_pipe_config *pipe_configs;
	int pipe_size; /* pipe_configs array size */

	/*
	 * option:
	 *
	 * for BUSWAIT :: BWAIT
	 * see
	 *	renesas_usbhs/common.c :: usbhsc_set_buswait()
	 * */
	int buswait_bwait;

	/*
	 * option:
	 *
	 * delay time from notify_hotplug callback
	 */
	int detection_delay; /* msec */

	/*
	 * option:
	 *
	 * dma id for dmaengine
	 * The data transfer direction on D0FIFO/D1FIFO should be
	 * fixed for keeping consistency.
	 * So, the platform id settings will be..
	 *	.d0_tx_id = xx_TX,
	 *	.d1_rx_id = xx_RX,
	 * or
	 *	.d1_tx_id = xx_TX,
	 *	.d0_rx_id = xx_RX,
	 */
	int d0_tx_id;
	int d0_rx_id;
	int d1_tx_id;
	int d1_rx_id;
	int d2_tx_id;
	int d2_rx_id;
	int d3_tx_id;
	int d3_rx_id;

	/*
	 * option:
	 *
	 * pio <--> dma border.
	 */
	int pio_dma_border; /* default is 64byte */

	/*
	 * option:
	 */
	u32 has_usb_dmac:1; /* for USB-DMAC */
	u32 runtime_pwctrl:1;
	u32 has_cnen:1;
	u32 cfifo_byte_addr:1; /* CFIFO is byte addressable */
#define USBHS_USB_DMAC_XFER_SIZE	32	/* hardcode the xfer size */
	u32 multi_clks:1;
	u32 has_new_pipe_configs:1;
};

/*
 * option:
 *
 * platform information for renesas_usbhs driver.
 */
struct renesas_usbhs_platform_info {
	/*
	 * option:
	 *
	 * platform set these functions before
	 * call platform_add_devices if needed
	 */
	struct renesas_usbhs_platform_callback	platform_callback;

	/*
	 * option:
	 *
	 * driver use these param for some register
	 */
	struct renesas_usbhs_driver_param	driver_param;
};

/*
 * macro for platform
 */
#define renesas_usbhs_get_info(pdev)\
	((struct renesas_usbhs_platform_info *)(pdev)->dev.platform_data)
#endif /* RENESAS_USB_H */