drivers/staging/greybus/svc.h

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Greybus SVC code
   4  *
   5  * Copyright 2015 Google Inc.
   6  * Copyright 2015 Linaro Ltd.
   7  */
   8
   9 #ifndef __SVC_H
  10 #define __SVC_H
  11
  12 #define GB_SVC_CPORT_FLAG_E2EFC         BIT(0)
  13 #define GB_SVC_CPORT_FLAG_CSD_N         BIT(1)
  14 #define GB_SVC_CPORT_FLAG_CSV_N         BIT(2)
  15
  16 enum gb_svc_state {
  17         GB_SVC_STATE_RESET,
  18         GB_SVC_STATE_PROTOCOL_VERSION,
  19         GB_SVC_STATE_SVC_HELLO,
  20 };
  21
  22 enum gb_svc_watchdog_bite {
  23         GB_SVC_WATCHDOG_BITE_RESET_UNIPRO = 0,
  24         GB_SVC_WATCHDOG_BITE_PANIC_KERNEL,
  25 };
  26
  27 struct gb_svc_watchdog;
  28
  29 struct svc_debugfs_pwrmon_rail {
  30         u8 id;
  31         struct gb_svc *svc;
  32 };
  33
  34 struct gb_svc {
  35         struct device           dev;
  36
  37         struct gb_host_device   *hd;
  38         struct gb_connection    *connection;
  39         enum gb_svc_state       state;
  40         struct ida              device_id_map;
  41         struct workqueue_struct *wq;
  42
  43         u16 endo_id;
  44         u8 ap_intf_id;
  45
  46         u8 protocol_major;
  47         u8 protocol_minor;
  48
  49         struct gb_svc_watchdog  *watchdog;
  50         enum gb_svc_watchdog_bite action;
  51
  52         struct dentry *debugfs_dentry;
  53         struct svc_debugfs_pwrmon_rail *pwrmon_rails;
  54 };
  55 #define to_gb_svc(d) container_of(d, struct gb_svc, dev)
  56
  57 struct gb_svc *gb_svc_create(struct gb_host_device *hd);
  58 int gb_svc_add(struct gb_svc *svc);
  59 void gb_svc_del(struct gb_svc *svc);
  60 void gb_svc_put(struct gb_svc *svc);
  61
  62 int gb_svc_pwrmon_intf_sample_get(struct gb_svc *svc, u8 intf_id,
  63                                   u8 measurement_type, u32 *value);
  64 int gb_svc_intf_device_id(struct gb_svc *svc, u8 intf_id, u8 device_id);
  65 int gb_svc_route_create(struct gb_svc *svc, u8 intf1_id, u8 dev1_id,
  66                                u8 intf2_id, u8 dev2_id);
  67 void gb_svc_route_destroy(struct gb_svc *svc, u8 intf1_id, u8 intf2_id);
  68 int gb_svc_connection_create(struct gb_svc *svc, u8 intf1_id, u16 cport1_id,
  69                              u8 intf2_id, u16 cport2_id, u8 cport_flags);
  70 void gb_svc_connection_destroy(struct gb_svc *svc, u8 intf1_id, u16 cport1_id,
  71                                u8 intf2_id, u16 cport2_id);
  72 int gb_svc_intf_eject(struct gb_svc *svc, u8 intf_id);
  73 int gb_svc_intf_vsys_set(struct gb_svc *svc, u8 intf_id, bool enable);
  74 int gb_svc_intf_refclk_set(struct gb_svc *svc, u8 intf_id, bool enable);
  75 int gb_svc_intf_unipro_set(struct gb_svc *svc, u8 intf_id, bool enable);
  76 int gb_svc_intf_activate(struct gb_svc *svc, u8 intf_id, u8 *intf_type);
  77 int gb_svc_intf_resume(struct gb_svc *svc, u8 intf_id);
  78
  79 int gb_svc_dme_peer_get(struct gb_svc *svc, u8 intf_id, u16 attr, u16 selector,
  80                         u32 *value);
  81 int gb_svc_dme_peer_set(struct gb_svc *svc, u8 intf_id, u16 attr, u16 selector,
  82                         u32 value);
  83 int gb_svc_intf_set_power_mode(struct gb_svc *svc, u8 intf_id, u8 hs_series,
  84                                u8 tx_mode, u8 tx_gear, u8 tx_nlanes,
  85                                u8 tx_amplitude, u8 tx_hs_equalizer,
  86                                u8 rx_mode, u8 rx_gear, u8 rx_nlanes,
  87                                u8 flags, u32 quirks,
  88                                struct gb_svc_l2_timer_cfg *local,
  89                                struct gb_svc_l2_timer_cfg *remote);
  90 int gb_svc_intf_set_power_mode_hibernate(struct gb_svc *svc, u8 intf_id);
  91 int gb_svc_ping(struct gb_svc *svc);
  92 int gb_svc_watchdog_create(struct gb_svc *svc);
  93 void gb_svc_watchdog_destroy(struct gb_svc *svc);
  94 bool gb_svc_watchdog_enabled(struct gb_svc *svc);
  95 int gb_svc_watchdog_enable(struct gb_svc *svc);
  96 int gb_svc_watchdog_disable(struct gb_svc *svc);
  97
  98 int gb_svc_protocol_init(void);
  99 void gb_svc_protocol_exit(void);
 100
 101 #endif /* __SVC_H */