drivers/usb/renesas_usbhs/mod.h

   1 // SPDX-License-Identifier: GPL-1.0+
   2 /*
   3  * Renesas USB driver
   4  *
   5  * Copyright (C) 2011 Renesas Solutions Corp.
   6  * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
   7  */
   8 #ifndef RENESAS_USB_MOD_H
   9 #define RENESAS_USB_MOD_H
  10
  11 #include <linux/spinlock.h>
  12 #include <linux/usb/renesas_usbhs.h>
  13 #include "common.h"
  14
  15 /*
  16  *      struct
  17  */
  18 struct usbhs_irq_state {
  19         u16 intsts0;
  20         u16 intsts1;
  21         u16 brdysts;
  22         u16 nrdysts;
  23         u16 bempsts;
  24 };
  25
  26 struct usbhs_mod {
  27         char *name;
  28
  29         /*
  30          * entry point from common.c
  31          */
  32         int (*start)(struct usbhs_priv *priv);
  33         int (*stop)(struct usbhs_priv *priv);
  34
  35         /*
  36          * INTSTS0
  37          */
  38
  39         /* DVST (DVSQ) */
  40         int (*irq_dev_state)(struct usbhs_priv *priv,
  41                              struct usbhs_irq_state *irq_state);
  42
  43         /* CTRT (CTSQ) */
  44         int (*irq_ctrl_stage)(struct usbhs_priv *priv,
  45                               struct usbhs_irq_state *irq_state);
  46
  47         /* BEMP / BEMPSTS */
  48         int (*irq_empty)(struct usbhs_priv *priv,
  49                          struct usbhs_irq_state *irq_state);
  50         u16 irq_bempsts;
  51
  52         /* BRDY / BRDYSTS */
  53         int (*irq_ready)(struct usbhs_priv *priv,
  54                          struct usbhs_irq_state *irq_state);
  55         u16 irq_brdysts;
  56
  57         /*
  58          * INTSTS1
  59          */
  60
  61         /* ATTCHE */
  62         int (*irq_attch)(struct usbhs_priv *priv,
  63                          struct usbhs_irq_state *irq_state);
  64
  65         /* DTCHE */
  66         int (*irq_dtch)(struct usbhs_priv *priv,
  67                         struct usbhs_irq_state *irq_state);
  68
  69         /* SIGN */
  70         int (*irq_sign)(struct usbhs_priv *priv,
  71                         struct usbhs_irq_state *irq_state);
  72
  73         /* SACK */
  74         int (*irq_sack)(struct usbhs_priv *priv,
  75                         struct usbhs_irq_state *irq_state);
  76
  77         struct usbhs_priv *priv;
  78 };
  79
  80 struct usbhs_mod_info {
  81         struct usbhs_mod *mod[USBHS_MAX];
  82         struct usbhs_mod *curt; /* current mod */
  83
  84         /*
  85          * INTSTS0 :: VBINT
  86          *
  87          * This function will be used as autonomy mode
  88          * when platform cannot call notify_hotplug.
  89          *
  90          * This callback cannot be member of "struct usbhs_mod"
  91          * because it will be used even though
  92          * host/gadget has not been selected.
  93          */
  94         int (*irq_vbus)(struct usbhs_priv *priv,
  95                         struct usbhs_irq_state *irq_state);
  96 };
  97
  98 /*
  99  *              for host/gadget module
 100  */
 101 struct usbhs_mod *usbhs_mod_get(struct usbhs_priv *priv, int id);
 102 struct usbhs_mod *usbhs_mod_get_current(struct usbhs_priv *priv);
 103 void usbhs_mod_register(struct usbhs_priv *priv, struct usbhs_mod *usb, int id);
 104 int usbhs_mod_is_host(struct usbhs_priv *priv);
 105 int usbhs_mod_change(struct usbhs_priv *priv, int id);
 106 int usbhs_mod_probe(struct usbhs_priv *priv);
 107 void usbhs_mod_remove(struct usbhs_priv *priv);
 108
 109 void usbhs_mod_autonomy_mode(struct usbhs_priv *priv);
 110
 111 /*
 112  *              status functions
 113  */
 114 int usbhs_status_get_device_state(struct usbhs_irq_state *irq_state);
 115 int usbhs_status_get_ctrl_stage(struct usbhs_irq_state *irq_state);
 116
 117 /*
 118  *              callback functions
 119  */
 120 void usbhs_irq_callback_update(struct usbhs_priv *priv, struct usbhs_mod *mod);
 121
 122
 123 #define usbhs_mod_call(priv, func, param...)            \
 124         ({                                              \
 125                 struct usbhs_mod *mod;                  \
 126                 mod = usbhs_mod_get_current(priv);      \
 127                 !mod            ? -ENODEV :             \
 128                 !mod->func      ? 0 :                   \
 129                  mod->func(param);                      \
 130         })
 131
 132 /*
 133  * host / gadget control
 134  */
 135 #if     defined(CONFIG_USB_RENESAS_USBHS_HCD) || \
 136         defined(CONFIG_USB_RENESAS_USBHS_HCD_MODULE)
 137 extern int usbhs_mod_host_probe(struct usbhs_priv *priv);
 138 extern int usbhs_mod_host_remove(struct usbhs_priv *priv);
 139 #else
 140 static inline int usbhs_mod_host_probe(struct usbhs_priv *priv)
 141 {
 142         return 0;
 143 }
 144 static inline void usbhs_mod_host_remove(struct usbhs_priv *priv)
 145 {
 146 }
 147 #endif
 148
 149 #if     defined(CONFIG_USB_RENESAS_USBHS_UDC) || \
 150         defined(CONFIG_USB_RENESAS_USBHS_UDC_MODULE)
 151 extern int usbhs_mod_gadget_probe(struct usbhs_priv *priv);
 152 extern void usbhs_mod_gadget_remove(struct usbhs_priv *priv);
 153 #else
 154 static inline int usbhs_mod_gadget_probe(struct usbhs_priv *priv)
 155 {
 156         return 0;
 157 }
 158 static inline void usbhs_mod_gadget_remove(struct usbhs_priv *priv)
 159 {
 160 }
 161 #endif
 162
 163 #endif /* RENESAS_USB_MOD_H */