drivers/staging/greybus/interface.h

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Greybus Interface Block code
   4  *
   5  * Copyright 2014 Google Inc.
   6  * Copyright 2014 Linaro Ltd.
   7  */
   8
   9 #ifndef __INTERFACE_H
  10 #define __INTERFACE_H
  11
  12 enum gb_interface_type {
  13         GB_INTERFACE_TYPE_INVALID = 0,
  14         GB_INTERFACE_TYPE_UNKNOWN,
  15         GB_INTERFACE_TYPE_DUMMY,
  16         GB_INTERFACE_TYPE_UNIPRO,
  17         GB_INTERFACE_TYPE_GREYBUS,
  18 };
  19
  20 #define GB_INTERFACE_QUIRK_NO_CPORT_FEATURES            BIT(0)
  21 #define GB_INTERFACE_QUIRK_NO_INIT_STATUS               BIT(1)
  22 #define GB_INTERFACE_QUIRK_NO_GMP_IDS                   BIT(2)
  23 #define GB_INTERFACE_QUIRK_FORCED_DISABLE               BIT(3)
  24 #define GB_INTERFACE_QUIRK_LEGACY_MODE_SWITCH           BIT(4)
  25 #define GB_INTERFACE_QUIRK_NO_BUNDLE_ACTIVATE           BIT(5)
  26 #define GB_INTERFACE_QUIRK_NO_PM                        BIT(6)
  27
  28 struct gb_interface {
  29         struct device dev;
  30         struct gb_control *control;
  31
  32         struct list_head bundles;
  33         struct list_head module_node;
  34         struct list_head manifest_descs;
  35         u8 interface_id;        /* Physical location within the Endo */
  36         u8 device_id;
  37         u8 features;            /* Feature flags set in the manifest */
  38
  39         enum gb_interface_type type;
  40
  41         u32 ddbl1_manufacturer_id;
  42         u32 ddbl1_product_id;
  43         u32 vendor_id;
  44         u32 product_id;
  45         u64 serial_number;
  46
  47         struct gb_host_device *hd;
  48         struct gb_module *module;
  49
  50         unsigned long quirks;
  51
  52         struct mutex mutex;
  53
  54         bool disconnected;
  55
  56         bool ejected;
  57         bool removed;
  58         bool active;
  59         bool enabled;
  60         bool mode_switch;
  61         bool dme_read;
  62
  63         struct work_struct mode_switch_work;
  64         struct completion mode_switch_completion;
  65 };
  66 #define to_gb_interface(d) container_of(d, struct gb_interface, dev)
  67
  68 struct gb_interface *gb_interface_create(struct gb_module *module,
  69                                          u8 interface_id);
  70 int gb_interface_activate(struct gb_interface *intf);
  71 void gb_interface_deactivate(struct gb_interface *intf);
  72 int gb_interface_enable(struct gb_interface *intf);
  73 void gb_interface_disable(struct gb_interface *intf);
  74 int gb_interface_add(struct gb_interface *intf);
  75 void gb_interface_del(struct gb_interface *intf);
  76 void gb_interface_put(struct gb_interface *intf);
  77 void gb_interface_mailbox_event(struct gb_interface *intf, u16 result,
  78                                                                 u32 mailbox);
  79
  80 int gb_interface_request_mode_switch(struct gb_interface *intf);
  81
  82 #endif /* __INTERFACE_H */