Loading...
1/* SPDX-License-Identifier: GPL-1.0+ */
2/*
3 * Renesas USB driver
4 *
5 * Copyright (C) 2011 Renesas Solutions Corp.
6 * Copyright (C) 2019 Renesas Electronics Corporation
7 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
8 */
9#ifndef RENESAS_USB_MOD_H
10#define RENESAS_USB_MOD_H
11
12#include <linux/spinlock.h>
13#include <linux/usb/renesas_usbhs.h>
14#include "common.h"
15
16/*
17 * struct
18 */
19struct usbhs_irq_state {
20 u16 intsts0;
21 u16 intsts1;
22 u16 brdysts;
23 u16 nrdysts;
24 u16 bempsts;
25};
26
27struct usbhs_mod {
28 char *name;
29
30 /*
31 * entry point from common.c
32 */
33 int (*start)(struct usbhs_priv *priv);
34 int (*stop)(struct usbhs_priv *priv);
35
36 /*
37 * INTSTS0
38 */
39
40 /* DVST (DVSQ) */
41 int (*irq_dev_state)(struct usbhs_priv *priv,
42 struct usbhs_irq_state *irq_state);
43
44 /* CTRT (CTSQ) */
45 int (*irq_ctrl_stage)(struct usbhs_priv *priv,
46 struct usbhs_irq_state *irq_state);
47
48 /* BEMP / BEMPSTS */
49 int (*irq_empty)(struct usbhs_priv *priv,
50 struct usbhs_irq_state *irq_state);
51 u16 irq_bempsts;
52
53 /* BRDY / BRDYSTS */
54 int (*irq_ready)(struct usbhs_priv *priv,
55 struct usbhs_irq_state *irq_state);
56 u16 irq_brdysts;
57
58 /*
59 * INTSTS1
60 */
61
62 /* ATTCHE */
63 int (*irq_attch)(struct usbhs_priv *priv,
64 struct usbhs_irq_state *irq_state);
65
66 /* DTCHE */
67 int (*irq_dtch)(struct usbhs_priv *priv,
68 struct usbhs_irq_state *irq_state);
69
70 /* SIGN */
71 int (*irq_sign)(struct usbhs_priv *priv,
72 struct usbhs_irq_state *irq_state);
73
74 /* SACK */
75 int (*irq_sack)(struct usbhs_priv *priv,
76 struct usbhs_irq_state *irq_state);
77
78 struct usbhs_priv *priv;
79};
80
81struct usbhs_mod_info {
82 struct usbhs_mod *mod[USBHS_MAX];
83 struct usbhs_mod *curt; /* current mod */
84
85 /*
86 * INTSTS0 :: VBINT
87 *
88 * This function will be used as autonomy mode (runtime_pwctrl == 0)
89 * when the platform doesn't have own get_vbus function.
90 *
91 * This callback cannot be member of "struct usbhs_mod" because it
92 * will be used even though host/gadget has not been selected.
93 */
94 int (*irq_vbus)(struct usbhs_priv *priv,
95 struct usbhs_irq_state *irq_state);
96
97 /*
98 * This function will be used on any gadget mode. To simplify the code,
99 * this member is in here.
100 */
101 int (*get_vbus)(struct platform_device *pdev);
102};
103
104/*
105 * for host/gadget module
106 */
107struct usbhs_mod *usbhs_mod_get(struct usbhs_priv *priv, int id);
108struct usbhs_mod *usbhs_mod_get_current(struct usbhs_priv *priv);
109void usbhs_mod_register(struct usbhs_priv *priv, struct usbhs_mod *usb, int id);
110int usbhs_mod_is_host(struct usbhs_priv *priv);
111int usbhs_mod_change(struct usbhs_priv *priv, int id);
112int usbhs_mod_probe(struct usbhs_priv *priv);
113void usbhs_mod_remove(struct usbhs_priv *priv);
114
115void usbhs_mod_autonomy_mode(struct usbhs_priv *priv);
116void usbhs_mod_non_autonomy_mode(struct usbhs_priv *priv);
117
118/*
119 * status functions
120 */
121int usbhs_status_get_device_state(struct usbhs_irq_state *irq_state);
122int usbhs_status_get_ctrl_stage(struct usbhs_irq_state *irq_state);
123
124/*
125 * callback functions
126 */
127void usbhs_irq_callback_update(struct usbhs_priv *priv, struct usbhs_mod *mod);
128
129
130#define usbhs_mod_call(priv, func, param...) \
131 ({ \
132 struct usbhs_mod *mod; \
133 mod = usbhs_mod_get_current(priv); \
134 !mod ? -ENODEV : \
135 !mod->func ? 0 : \
136 mod->func(param); \
137 })
138
139#define usbhs_priv_to_modinfo(priv) (&priv->mod_info)
140#define usbhs_mod_info_call(priv, func, param...) \
141({ \
142 struct usbhs_mod_info *info; \
143 info = usbhs_priv_to_modinfo(priv); \
144 !info->func ? 0 : \
145 info->func(param); \
146})
147
148/*
149 * host / gadget control
150 */
151#if defined(CONFIG_USB_RENESAS_USBHS_HCD) || \
152 defined(CONFIG_USB_RENESAS_USBHS_HCD_MODULE)
153extern int usbhs_mod_host_probe(struct usbhs_priv *priv);
154extern int usbhs_mod_host_remove(struct usbhs_priv *priv);
155#else
156static inline int usbhs_mod_host_probe(struct usbhs_priv *priv)
157{
158 return 0;
159}
160static inline void usbhs_mod_host_remove(struct usbhs_priv *priv)
161{
162}
163#endif
164
165#if defined(CONFIG_USB_RENESAS_USBHS_UDC) || \
166 defined(CONFIG_USB_RENESAS_USBHS_UDC_MODULE)
167extern int usbhs_mod_gadget_probe(struct usbhs_priv *priv);
168extern void usbhs_mod_gadget_remove(struct usbhs_priv *priv);
169#else
170static inline int usbhs_mod_gadget_probe(struct usbhs_priv *priv)
171{
172 return 0;
173}
174static inline void usbhs_mod_gadget_remove(struct usbhs_priv *priv)
175{
176}
177#endif
178
179#endif /* RENESAS_USB_MOD_H */
1/*
2 * Renesas USB driver
3 *
4 * Copyright (C) 2011 Renesas Solutions Corp.
5 * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
6 *
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
11 *
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, write to the Free Software
14 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
15 *
16 */
17#ifndef RENESAS_USB_MOD_H
18#define RENESAS_USB_MOD_H
19
20#include <linux/spinlock.h>
21#include <linux/usb/renesas_usbhs.h>
22#include "./common.h"
23
24/*
25 * struct
26 */
27struct usbhs_irq_state {
28 u16 intsts0;
29 u16 intsts1;
30 u16 brdysts;
31 u16 nrdysts;
32 u16 bempsts;
33 u16 dvstctr;
34};
35
36struct usbhs_mod {
37 char *name;
38
39 /*
40 * entry point from common.c
41 */
42 int (*start)(struct usbhs_priv *priv);
43 int (*stop)(struct usbhs_priv *priv);
44
45 /* INTSTS0 :: DVST (DVSQ) */
46 int (*irq_dev_state)(struct usbhs_priv *priv,
47 struct usbhs_irq_state *irq_state);
48
49 /* INTSTS0 :: CTRT (CTSQ) */
50 int (*irq_ctrl_stage)(struct usbhs_priv *priv,
51 struct usbhs_irq_state *irq_state);
52
53 /* INTSTS0 :: BEMP */
54 /* BEMPSTS */
55 int (*irq_empty)(struct usbhs_priv *priv,
56 struct usbhs_irq_state *irq_state);
57 u16 irq_bempsts;
58
59 /* INTSTS0 :: BRDY */
60 /* BRDYSTS */
61 int (*irq_ready)(struct usbhs_priv *priv,
62 struct usbhs_irq_state *irq_state);
63 u16 irq_brdysts;
64
65 struct usbhs_priv *priv;
66};
67
68struct usbhs_mod_info {
69 struct usbhs_mod *mod[USBHS_MAX];
70 struct usbhs_mod *curt; /* current mod */
71
72 /*
73 * INTSTS0 :: VBINT
74 *
75 * This function will be used as autonomy mode
76 * when platform cannot call notify_hotplug.
77 *
78 * This callback cannot be member of "struct usbhs_mod"
79 * because it will be used even though
80 * host/gadget has not been selected.
81 */
82 int (*irq_vbus)(struct usbhs_priv *priv,
83 struct usbhs_irq_state *irq_state);
84};
85
86/*
87 * for host/gadget module
88 */
89struct usbhs_mod *usbhs_mod_get(struct usbhs_priv *priv, int id);
90struct usbhs_mod *usbhs_mod_get_current(struct usbhs_priv *priv);
91void usbhs_mod_register(struct usbhs_priv *priv, struct usbhs_mod *usb, int id);
92int usbhs_mod_is_host(struct usbhs_priv *priv, struct usbhs_mod *mod);
93int usbhs_mod_change(struct usbhs_priv *priv, int id);
94int usbhs_mod_probe(struct usbhs_priv *priv);
95void usbhs_mod_remove(struct usbhs_priv *priv);
96
97void usbhs_mod_autonomy_mode(struct usbhs_priv *priv);
98
99/*
100 * status functions
101 */
102int usbhs_status_get_usb_speed(struct usbhs_irq_state *irq_state);
103int usbhs_status_get_device_state(struct usbhs_irq_state *irq_state);
104int usbhs_status_get_ctrl_stage(struct usbhs_irq_state *irq_state);
105
106/*
107 * callback functions
108 */
109void usbhs_irq_callback_update(struct usbhs_priv *priv, struct usbhs_mod *mod);
110
111
112#define usbhs_mod_call(priv, func, param...) \
113 ({ \
114 struct usbhs_mod *mod; \
115 mod = usbhs_mod_get_current(priv); \
116 !mod ? -ENODEV : \
117 !mod->func ? 0 : \
118 mod->func(param); \
119 })
120
121/*
122 * gadget control
123 */
124#ifdef CONFIG_USB_RENESAS_USBHS_UDC
125extern int __devinit usbhs_mod_gadget_probe(struct usbhs_priv *priv);
126extern void __devexit usbhs_mod_gadget_remove(struct usbhs_priv *priv);
127#else
128static inline int usbhs_mod_gadget_probe(struct usbhs_priv *priv)
129{
130 return 0;
131}
132static inline void usbhs_mod_gadget_remove(struct usbhs_priv *priv)
133{
134}
135#endif
136
137#endif /* RENESAS_USB_MOD_H */