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 */ 164