include/linux/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 #include <linux/types.h>
  13 #include <linux/device.h>
  14
  15 struct gb_svc_l2_timer_cfg;
  16
  17 #define GB_SVC_CPORT_FLAG_E2EFC         BIT(0)
  18 #define GB_SVC_CPORT_FLAG_CSD_N         BIT(1)
  19 #define GB_SVC_CPORT_FLAG_CSV_N         BIT(2)
  20
  21 enum gb_svc_state {
  22         GB_SVC_STATE_RESET,
  23         GB_SVC_STATE_PROTOCOL_VERSION,
  24         GB_SVC_STATE_SVC_HELLO,
  25 };
  26
  27 enum gb_svc_watchdog_bite {
  28         GB_SVC_WATCHDOG_BITE_RESET_UNIPRO = 0,
  29         GB_SVC_WATCHDOG_BITE_PANIC_KERNEL,
  30 };
  31
  32 struct gb_svc_watchdog;
  33
  34 struct svc_debugfs_pwrmon_rail {
  35         u8 id;
  36         struct gb_svc *svc;
  37 };
  38
  39 struct gb_svc {
  40         struct device           dev;
  41
  42         struct gb_host_device   *hd;
  43         struct gb_connection    *connection;
  44         enum gb_svc_state       state;
  45         struct ida              device_id_map;
  46         struct workqueue_struct *wq;
  47
  48         u16 endo_id;
  49         u8 ap_intf_id;
  50
  51         u8 protocol_major;
  52         u8 protocol_minor;
  53
  54         struct gb_svc_watchdog  *watchdog;
  55         enum gb_svc_watchdog_bite action;
  56
  57         struct dentry *debugfs_dentry;
  58         struct svc_debugfs_pwrmon_rail *pwrmon_rails;
  59 };
  60 #define to_gb_svc(d) container_of(d, struct gb_svc, dev)
  61
  62 struct gb_svc *gb_svc_create(struct gb_host_device *hd);
  63 int gb_svc_add(struct gb_svc *svc);
  64 void gb_svc_del(struct gb_svc *svc);
  65 void gb_svc_put(struct gb_svc *svc);
  66
  67 int gb_svc_pwrmon_intf_sample_get(struct gb_svc *svc, u8 intf_id,
  68                                   u8 measurement_type, u32 *value);
  69 int gb_svc_intf_device_id(struct gb_svc *svc, u8 intf_id, u8 device_id);
  70 int gb_svc_route_create(struct gb_svc *svc, u8 intf1_id, u8 dev1_id,
  71                                u8 intf2_id, u8 dev2_id);
  72 void gb_svc_route_destroy(struct gb_svc *svc, u8 intf1_id, u8 intf2_id);
  73 int gb_svc_connection_create(struct gb_svc *svc, u8 intf1_id, u16 cport1_id,
  74                              u8 intf2_id, u16 cport2_id, u8 cport_flags);
  75 void gb_svc_connection_destroy(struct gb_svc *svc, u8 intf1_id, u16 cport1_id,
  76                                u8 intf2_id, u16 cport2_id);
  77 int gb_svc_intf_eject(struct gb_svc *svc, u8 intf_id);
  78 int gb_svc_intf_vsys_set(struct gb_svc *svc, u8 intf_id, bool enable);
  79 int gb_svc_intf_refclk_set(struct gb_svc *svc, u8 intf_id, bool enable);
  80 int gb_svc_intf_unipro_set(struct gb_svc *svc, u8 intf_id, bool enable);
  81 int gb_svc_intf_activate(struct gb_svc *svc, u8 intf_id, u8 *intf_type);
  82 int gb_svc_intf_resume(struct gb_svc *svc, u8 intf_id);
  83
  84 int gb_svc_dme_peer_get(struct gb_svc *svc, u8 intf_id, u16 attr, u16 selector,
  85                         u32 *value);
  86 int gb_svc_dme_peer_set(struct gb_svc *svc, u8 intf_id, u16 attr, u16 selector,
  87                         u32 value);
  88 int gb_svc_intf_set_power_mode(struct gb_svc *svc, u8 intf_id, u8 hs_series,
  89                                u8 tx_mode, u8 tx_gear, u8 tx_nlanes,
  90                                u8 tx_amplitude, u8 tx_hs_equalizer,
  91                                u8 rx_mode, u8 rx_gear, u8 rx_nlanes,
  92                                u8 flags, u32 quirks,
  93                                struct gb_svc_l2_timer_cfg *local,
  94                                struct gb_svc_l2_timer_cfg *remote);
  95 int gb_svc_intf_set_power_mode_hibernate(struct gb_svc *svc, u8 intf_id);
  96 int gb_svc_ping(struct gb_svc *svc);
  97 int gb_svc_watchdog_create(struct gb_svc *svc);
  98 void gb_svc_watchdog_destroy(struct gb_svc *svc);
  99 bool gb_svc_watchdog_enabled(struct gb_svc *svc);
 100 int gb_svc_watchdog_enable(struct gb_svc *svc);
 101 int gb_svc_watchdog_disable(struct gb_svc *svc);
 102
 103 int gb_svc_protocol_init(void);
 104 void gb_svc_protocol_exit(void);
 105
 106 #endif /* __SVC_H */