drivers/staging/greybus/interface.h

   1 /*
   2  * Greybus Interface Block code
   3  *
   4  * Copyright 2014 Google Inc.
   5  * Copyright 2014 Linaro Ltd.
   6  *
   7  * Released under the GPLv2 only.
   8  */
   9
  10 #ifndef __INTERFACE_H
  11 #define __INTERFACE_H
  12
  13 enum gb_interface_type {
  14         GB_INTERFACE_TYPE_INVALID = 0,
  15         GB_INTERFACE_TYPE_UNKNOWN,
  16         GB_INTERFACE_TYPE_DUMMY,
  17         GB_INTERFACE_TYPE_UNIPRO,
  18         GB_INTERFACE_TYPE_GREYBUS,
  19 };
  20
  21 #define GB_INTERFACE_QUIRK_NO_CPORT_FEATURES            BIT(0)
  22 #define GB_INTERFACE_QUIRK_NO_INIT_STATUS               BIT(1)
  23 #define GB_INTERFACE_QUIRK_NO_GMP_IDS                   BIT(2)
  24 #define GB_INTERFACE_QUIRK_FORCED_DISABLE               BIT(3)
  25 #define GB_INTERFACE_QUIRK_LEGACY_MODE_SWITCH           BIT(4)
  26 #define GB_INTERFACE_QUIRK_NO_BUNDLE_ACTIVATE           BIT(5)
  27 #define GB_INTERFACE_QUIRK_NO_PM                        BIT(6)
  28
  29 struct gb_interface {
  30         struct device dev;
  31         struct gb_control *control;
  32
  33         struct list_head bundles;
  34         struct list_head module_node;
  35         struct list_head manifest_descs;
  36         u8 interface_id;        /* Physical location within the Endo */
  37         u8 device_id;
  38         u8 features;            /* Feature flags set in the manifest */
  39
  40         enum gb_interface_type type;
  41
  42         u32 ddbl1_manufacturer_id;
  43         u32 ddbl1_product_id;
  44         u32 vendor_id;
  45         u32 product_id;
  46         u64 serial_number;
  47
  48         struct gb_host_device *hd;
  49         struct gb_module *module;
  50
  51         unsigned long quirks;
  52
  53         struct mutex mutex;
  54
  55         bool disconnected;
  56
  57         bool ejected;
  58         bool removed;
  59         bool active;
  60         bool enabled;
  61         bool mode_switch;
  62         bool dme_read;
  63
  64         struct work_struct mode_switch_work;
  65         struct completion mode_switch_completion;
  66 };
  67 #define to_gb_interface(d) container_of(d, struct gb_interface, dev)
  68
  69 struct gb_interface *gb_interface_create(struct gb_module *module,
  70                                          u8 interface_id);
  71 int gb_interface_activate(struct gb_interface *intf);
  72 void gb_interface_deactivate(struct gb_interface *intf);
  73 int gb_interface_enable(struct gb_interface *intf);
  74 void gb_interface_disable(struct gb_interface *intf);
  75 int gb_interface_timesync_enable(struct gb_interface *intf, u8 count,
  76                                  u64 frame_time, u32 strobe_delay, u32 refclk);
  77 int gb_interface_timesync_authoritative(struct gb_interface *intf,
  78                                         u64 *frame_time);
  79 int gb_interface_timesync_disable(struct gb_interface *intf);
  80 int gb_interface_add(struct gb_interface *intf);
  81 void gb_interface_del(struct gb_interface *intf);
  82 void gb_interface_put(struct gb_interface *intf);
  83 void gb_interface_mailbox_event(struct gb_interface *intf, u16 result,
  84                                                                 u32 mailbox);
  85
  86 int gb_interface_request_mode_switch(struct gb_interface *intf);
  87
  88 #endif /* __INTERFACE_H */