| Badhri Jagan Sridharan | ea562f8 | 2015-08-31 21:36:07 -0700 | [diff] [blame] | 1 | #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 | |
| 8 | struct device; |
| 9 | |
| 10 | enum 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 | |
| 18 | enum { |
| 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 | |
| 26 | enum { |
| 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 | |
| 35 | enum { |
| 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 | |
| 43 | enum { |
| 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 | |
| 50 | enum 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 | |
| 58 | struct dual_role_phy_instance; |
| 59 | |
| 60 | /* Description of typec port */ |
| 61 | struct 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 | |
| 82 | struct 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) |
| 93 | extern void dual_role_instance_changed(struct dual_role_phy_instance |
| 94 | *dual_role); |
| 95 | extern struct dual_role_phy_instance *__must_check |
| 96 | devm_dual_role_instance_register(struct device *parent, |
| 97 | const struct dual_role_phy_desc *desc); |
| 98 | extern void devm_dual_role_instance_unregister(struct device *dev, |
| 99 | struct dual_role_phy_instance |
| 100 | *dual_role); |
| 101 | extern int dual_role_get_property(struct dual_role_phy_instance *dual_role, |
| 102 | enum dual_role_property prop, |
| 103 | unsigned int *val); |
| 104 | extern int dual_role_set_property(struct dual_role_phy_instance *dual_role, |
| 105 | enum dual_role_property prop, |
| 106 | const unsigned int *val); |
| 107 | extern int dual_role_property_is_writeable(struct dual_role_phy_instance |
| 108 | *dual_role, |
| 109 | enum dual_role_property prop); |
| 110 | extern void *dual_role_get_drvdata(struct dual_role_phy_instance *dual_role); |
| 111 | #else /* CONFIG_DUAL_ROLE_USB_INTF */ |
| 112 | static inline void dual_role_instance_changed(struct dual_role_phy_instance |
| 113 | *dual_role){} |
| 114 | static inline struct dual_role_phy_instance *__must_check |
| 115 | devm_dual_role_instance_register(struct device *parent, |
| 116 | const struct dual_role_phy_desc *desc) |
| 117 | { |
| 118 | return ERR_PTR(-ENOSYS); |
| 119 | } |
| 120 | static inline void devm_dual_role_instance_unregister(struct device *dev, |
| 121 | struct dual_role_phy_instance |
| 122 | *dual_role){} |
| 123 | static 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__ */ |