drivers/usb/typec/class.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2
   3 #ifndef __USB_TYPEC_CLASS__
   4 #define __USB_TYPEC_CLASS__
   5
   6 #include <linux/device.h>
   7 #include <linux/usb/typec.h>
   8
   9 struct typec_mux;
  10 struct typec_switch;
  11 struct usb_device;
  12
  13 struct typec_plug {
  14         struct device                   dev;
  15         enum typec_plug_index           index;
  16         struct ida                      mode_ids;
  17         int                             num_altmodes;
  18 };
  19
  20 struct typec_cable {
  21         struct device                   dev;
  22         enum typec_plug_type            type;
  23         struct usb_pd_identity          *identity;
  24         unsigned int                    active:1;
  25         u16                             pd_revision; /* 0300H = "3.0" */
  26 };
  27
  28 struct typec_partner {
  29         struct device                   dev;
  30         unsigned int                    usb_pd:1;
  31         struct usb_pd_identity          *identity;
  32         enum typec_accessory            accessory;
  33         struct ida                      mode_ids;
  34         int                             num_altmodes;
  35         u16                             pd_revision; /* 0300H = "3.0" */
  36         enum usb_pd_svdm_ver            svdm_version;
  37
  38         struct usb_power_delivery       *pd;
  39
  40         void (*attach)(struct typec_partner *partner, struct device *dev);
  41         void (*deattach)(struct typec_partner *partner, struct device *dev);
  42 };
  43
  44 struct typec_port {
  45         unsigned int                    id;
  46         struct device                   dev;
  47         struct ida                      mode_ids;
  48
  49         struct usb_power_delivery       *pd;
  50
  51         int                             prefer_role;
  52         enum typec_data_role            data_role;
  53         enum typec_role                 pwr_role;
  54         enum typec_role                 vconn_role;
  55         enum typec_pwr_opmode           pwr_opmode;
  56         enum typec_port_type            port_type;
  57         struct mutex                    port_type_lock;
  58
  59         enum typec_orientation          orientation;
  60         struct typec_switch             *sw;
  61         struct typec_mux                *mux;
  62         struct typec_retimer            *retimer;
  63
  64         const struct typec_capability   *cap;
  65         const struct typec_operations   *ops;
  66
  67         struct typec_connector          con;
  68
  69         /*
  70          * REVISIT: Only USB devices for now. If there are others, these need to
  71          * be converted into a list.
  72          *
  73          * NOTE: These may be registered first before the typec_partner, so they
  74          * will always have to be kept here instead of struct typec_partner.
  75          */
  76         struct device                   *usb2_dev;
  77         struct device                   *usb3_dev;
  78 };
  79
  80 #define to_typec_port(_dev_) container_of(_dev_, struct typec_port, dev)
  81 #define to_typec_plug(_dev_) container_of(_dev_, struct typec_plug, dev)
  82 #define to_typec_cable(_dev_) container_of(_dev_, struct typec_cable, dev)
  83 #define to_typec_partner(_dev_) container_of(_dev_, struct typec_partner, dev)
  84
  85 extern const struct device_type typec_partner_dev_type;
  86 extern const struct device_type typec_cable_dev_type;
  87 extern const struct device_type typec_plug_dev_type;
  88 extern const struct device_type typec_port_dev_type;
  89
  90 #define is_typec_partner(dev) ((dev)->type == &typec_partner_dev_type)
  91 #define is_typec_cable(dev) ((dev)->type == &typec_cable_dev_type)
  92 #define is_typec_plug(dev) ((dev)->type == &typec_plug_dev_type)
  93 #define is_typec_port(dev) ((dev)->type == &typec_port_dev_type)
  94
  95 extern struct class typec_mux_class;
  96 extern struct class retimer_class;
  97 extern struct class typec_class;
  98
  99 #if defined(CONFIG_ACPI)
 100 int typec_link_ports(struct typec_port *connector);
 101 void typec_unlink_ports(struct typec_port *connector);
 102 #else
 103 static inline int typec_link_ports(struct typec_port *connector) { return 0; }
 104 static inline void typec_unlink_ports(struct typec_port *connector) { }
 105 #endif
 106
 107 #endif /* __USB_TYPEC_CLASS__ */