summaryrefslogtreecommitdiffstats
path: root/include/linux/usb/langwell_otg.h
blob: e115ae6df1dab8735a9c552a47a60571549d504a (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
/*
 * Intel Langwell USB OTG transceiver driver
 * Copyright (C) 2008, Intel Corporation.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
 *
 */

#ifndef __LANGWELL_OTG_H__
#define __LANGWELL_OTG_H__

/* notify transceiver driver about OTG events */
extern void langwell_update_transceiver(void);
/* HCD register bus driver */
extern int langwell_register_host(struct pci_driver *host_driver);
/* HCD unregister bus driver */
extern void langwell_unregister_host(struct pci_driver *host_driver);
/* DCD register bus driver */
extern int langwell_register_peripheral(struct pci_driver *client_driver);
/* DCD unregister bus driver */
extern void langwell_unregister_peripheral(struct pci_driver *client_driver);
/* No silent failure, output warning message */
extern void langwell_otg_nsf_msg(unsigned long message);

#define CI_USBCMD		0x30
#	define USBCMD_RST		BIT(1)
#	define USBCMD_RS		BIT(0)
#define CI_USBSTS		0x34
#	define USBSTS_SLI		BIT(8)
#	define USBSTS_URI		BIT(6)
#	define USBSTS_PCI		BIT(2)
#define CI_PORTSC1		0x74
#	define PORTSC_PP		BIT(12)
#	define PORTSC_LS		(BIT(11) | BIT(10))
#	define PORTSC_SUSP		BIT(7)
#	define PORTSC_CCS		BIT(0)
#define CI_HOSTPC1		0xb4
#	define HOSTPC1_PHCD		BIT(22)
#define CI_OTGSC		0xf4
#	define OTGSC_DPIE		BIT(30)
#	define OTGSC_1MSE		BIT(29)
#	define OTGSC_BSEIE		BIT(28)
#	define OTGSC_BSVIE		BIT(27)
#	define OTGSC_ASVIE		BIT(26)
#	define OTGSC_AVVIE		BIT(25)
#	define OTGSC_IDIE		BIT(24)
#	define OTGSC_DPIS		BIT(22)
#	define OTGSC_1MSS		BIT(21)
#	define OTGSC_BSEIS		BIT(20)
#	define OTGSC_BSVIS		BIT(19)
#	define OTGSC_ASVIS		BIT(18)
#	define OTGSC_AVVIS		BIT(17)
#	define OTGSC_IDIS		BIT(16)
#	define OTGSC_DPS		BIT(14)
#	define OTGSC_1MST		BIT(13)
#	define OTGSC_BSE		BIT(12)
#	define OTGSC_BSV		BIT(11)
#	define OTGSC_ASV		BIT(10)
#	define OTGSC_AVV		BIT(9)
#	define OTGSC_ID			BIT(8)
#	define OTGSC_HABA		BIT(7)
#	define OTGSC_HADP		BIT(6)
#	define OTGSC_IDPU		BIT(5)
#	define OTGSC_DP			BIT(4)
#	define OTGSC_OT			BIT(3)
#	define OTGSC_HAAR		BIT(2)
#	define OTGSC_VC			BIT(1)
#	define OTGSC_VD			BIT(0)
#	define OTGSC_INTEN_MASK		(0x7f << 24)
#	define OTGSC_INTSTS_MASK	(0x7f << 16)
#define CI_USBMODE		0xf8
#	define USBMODE_CM		(BIT(1) | BIT(0))
#	define USBMODE_IDLE		0
#	define USBMODE_DEVICE		0x2
#	define USBMODE_HOST		0x3

#define INTR_DUMMY_MASK (USBSTS_SLI | USBSTS_URI | USBSTS_PCI)

struct otg_hsm {
	/* Input */
	int a_bus_resume;
	int a_bus_suspend;
	int a_conn;
	int a_sess_vld;
	int a_srp_det;
	int a_vbus_vld;
	int b_bus_resume;
	int b_bus_suspend;
	int b_conn;
	int b_se0_srp;
	int b_sess_end;
	int b_sess_vld;
	int id;

	/* Internal variables */
	int a_set_b_hnp_en;
	int b_srp_done;
	int b_hnp_enable;

	/* Timeout indicator for timers */
	int a_wait_vrise_tmout;
	int a_wait_bcon_tmout;
	int a_aidl_bdis_tmout;
	int b_ase0_brst_tmout;
	int b_bus_suspend_tmout;
	int b_srp_res_tmout;

	/* Informative variables */
	int a_bus_drop;
	int a_bus_req;
	int a_clr_err;
	int a_suspend_req;
	int b_bus_req;

	/* Output */
	int drv_vbus;
	int loc_conn;
	int loc_sof;

	/* Others */
	int b_bus_suspend_vld;
};

#define TA_WAIT_VRISE	100
#define TA_WAIT_BCON	30000
#define TA_AIDL_BDIS	15000
#define TB_ASE0_BRST	5000
#define TB_SE0_SRP	2
#define TB_SRP_RES	100
#define TB_BUS_SUSPEND	500

struct langwell_otg_timer {
	unsigned long expires;	/* Number of count increase to timeout */
	unsigned long count;	/* Tick counter */
	void (*function)(unsigned long);	/* Timeout function */
	unsigned long data;	/* Data passed to function */
	struct list_head list;
};

struct langwell_otg {
	struct otg_transceiver 	otg;
	struct otg_hsm 		hsm;
	void __iomem 		*regs;
	unsigned 		region;
	struct pci_driver	*host_ops;
	struct pci_driver	*client_ops;
	struct pci_dev		*pdev;
	struct work_struct 	work;
	struct workqueue_struct	*qwork;
	spinlock_t 		lock;
	spinlock_t 		wq_lock;
};

static inline struct langwell_otg *otg_to_langwell(struct otg_transceiver *otg)
{
	return container_of(otg, struct langwell_otg, otg);
}

#ifdef DEBUG
#define otg_dbg(fmt, args...) \
	printk(KERN_DEBUG fmt , ## args)
#else
#define otg_dbg(fmt, args...) \
	do { } while (0)
#endif /* DEBUG */
#endif /* __LANGWELL_OTG_H__ */