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Badhri Jagan Sridharanea562f82015-08-31 21:36:07 -07001#ifndef __LINUX_CLASS_DUAL_ROLE_H__
2#define __LINUX_CLASS_DUAL_ROLE_H__
3
4#include <linux/workqueue.h>
5#include <linux/errno.h>
6#include <linux/types.h>
7
8struct device;
9
10enum dual_role_supported_modes {
11 DUAL_ROLE_SUPPORTED_MODES_DFP_AND_UFP = 0,
12 DUAL_ROLE_SUPPORTED_MODES_DFP,
13 DUAL_ROLE_SUPPORTED_MODES_UFP,
14/*The following should be the last element*/
15 DUAL_ROLE_PROP_SUPPORTED_MODES_TOTAL,
16};
17
18enum {
19 DUAL_ROLE_PROP_MODE_UFP = 0,
20 DUAL_ROLE_PROP_MODE_DFP,
21 DUAL_ROLE_PROP_MODE_NONE,
22/*The following should be the last element*/
23 DUAL_ROLE_PROP_MODE_TOTAL,
24};
25
26enum {
27 DUAL_ROLE_PROP_PR_SRC = 0,
28 DUAL_ROLE_PROP_PR_SNK,
29 DUAL_ROLE_PROP_PR_NONE,
30/*The following should be the last element*/
31 DUAL_ROLE_PROP_PR_TOTAL,
32
33};
34
35enum {
36 DUAL_ROLE_PROP_DR_HOST = 0,
37 DUAL_ROLE_PROP_DR_DEVICE,
38 DUAL_ROLE_PROP_DR_NONE,
39/*The following should be the last element*/
40 DUAL_ROLE_PROP_DR_TOTAL,
41};
42
43enum {
44 DUAL_ROLE_PROP_VCONN_SUPPLY_NO = 0,
45 DUAL_ROLE_PROP_VCONN_SUPPLY_YES,
46/*The following should be the last element*/
47 DUAL_ROLE_PROP_VCONN_SUPPLY_TOTAL,
48};
49
50enum dual_role_property {
51 DUAL_ROLE_PROP_SUPPORTED_MODES = 0,
52 DUAL_ROLE_PROP_MODE,
53 DUAL_ROLE_PROP_PR,
54 DUAL_ROLE_PROP_DR,
55 DUAL_ROLE_PROP_VCONN_SUPPLY,
56};
57
58struct dual_role_phy_instance;
59
60/* Description of typec port */
61struct dual_role_phy_desc {
62 /* /sys/class/dual_role_usb/<name>/ */
63 const char *name;
64 enum dual_role_supported_modes supported_modes;
65 enum dual_role_property *properties;
66 size_t num_properties;
67
68 /* Callback for "cat /sys/class/dual_role_usb/<name>/<property>" */
69 int (*get_property)(struct dual_role_phy_instance *dual_role,
70 enum dual_role_property prop,
71 unsigned int *val);
72 /* Callback for "echo <value> >
73 * /sys/class/dual_role_usb/<name>/<property>" */
74 int (*set_property)(struct dual_role_phy_instance *dual_role,
75 enum dual_role_property prop,
76 const unsigned int *val);
77 /* Decides whether userspace can change a specific property */
78 int (*property_is_writeable)(struct dual_role_phy_instance *dual_role,
79 enum dual_role_property prop);
80};
81
82struct dual_role_phy_instance {
83 const struct dual_role_phy_desc *desc;
84
85 /* Driver private data */
86 void *drv_data;
87
88 struct device dev;
89 struct work_struct changed_work;
90};
91
92#if IS_ENABLED(CONFIG_DUAL_ROLE_USB_INTF)
93extern void dual_role_instance_changed(struct dual_role_phy_instance
94 *dual_role);
95extern struct dual_role_phy_instance *__must_check
96devm_dual_role_instance_register(struct device *parent,
97 const struct dual_role_phy_desc *desc);
98extern void devm_dual_role_instance_unregister(struct device *dev,
99 struct dual_role_phy_instance
100 *dual_role);
101extern int dual_role_get_property(struct dual_role_phy_instance *dual_role,
102 enum dual_role_property prop,
103 unsigned int *val);
104extern int dual_role_set_property(struct dual_role_phy_instance *dual_role,
105 enum dual_role_property prop,
106 const unsigned int *val);
107extern int dual_role_property_is_writeable(struct dual_role_phy_instance
108 *dual_role,
109 enum dual_role_property prop);
110extern void *dual_role_get_drvdata(struct dual_role_phy_instance *dual_role);
111#else /* CONFIG_DUAL_ROLE_USB_INTF */
112static inline void dual_role_instance_changed(struct dual_role_phy_instance
113 *dual_role){}
114static inline struct dual_role_phy_instance *__must_check
115devm_dual_role_instance_register(struct device *parent,
116 const struct dual_role_phy_desc *desc)
117{
118 return ERR_PTR(-ENOSYS);
119}
120static inline void devm_dual_role_instance_unregister(struct device *dev,
121 struct dual_role_phy_instance
122 *dual_role){}
123static inline void *dual_role_get_drvdata(struct dual_role_phy_instance
124 *dual_role)
125{
126 return ERR_PTR(-ENOSYS);
127}
128#endif /* CONFIG_DUAL_ROLE_USB_INTF */
129#endif /* __LINUX_CLASS_DUAL_ROLE_H__ */