drivers/usb/renesas_usbhs/mod.h

   1 /*
   2  * Renesas USB driver
   3  *
   4  * Copyright (C) 2011 Renesas Solutions Corp.
   5  * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
   6  *
   7  * This program is distributed in the hope that it will be useful,
   8  * but WITHOUT ANY WARRANTY; without even the implied warranty of
   9  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10  * GNU General Public License for more details.
  11  *
  12  * You should have received a copy of the GNU General Public License
  13  * along with this program; if not, write to the Free Software
  14  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  15  *
  16  */
  17 #ifndef RENESAS_USB_MOD_H
  18 #define RENESAS_USB_MOD_H
  19
  20 #include <linux/spinlock.h>
  21 #include <linux/usb/renesas_usbhs.h>
  22 #include "common.h"
  23
  24 /*
  25  *      struct
  26  */
  27 struct usbhs_irq_state {
  28         u16 intsts0;
  29         u16 intsts1;
  30         u16 brdysts;
  31         u16 nrdysts;
  32         u16 bempsts;
  33 };
  34
  35 struct usbhs_mod {
  36         char *name;
  37
  38         /*
  39          * entry point from common.c
  40          */
  41         int (*start)(struct usbhs_priv *priv);
  42         int (*stop)(struct usbhs_priv *priv);
  43
  44         /*
  45          * INTSTS0
  46          */
  47
  48         /* DVST (DVSQ) */
  49         int (*irq_dev_state)(struct usbhs_priv *priv,
  50                              struct usbhs_irq_state *irq_state);
  51
  52         /* CTRT (CTSQ) */
  53         int (*irq_ctrl_stage)(struct usbhs_priv *priv,
  54                               struct usbhs_irq_state *irq_state);
  55
  56         /* BEMP / BEMPSTS */
  57         int (*irq_empty)(struct usbhs_priv *priv,
  58                          struct usbhs_irq_state *irq_state);
  59         u16 irq_bempsts;
  60
  61         /* BRDY / BRDYSTS */
  62         int (*irq_ready)(struct usbhs_priv *priv,
  63                          struct usbhs_irq_state *irq_state);
  64         u16 irq_brdysts;
  65
  66         /*
  67          * INTSTS1
  68          */
  69
  70         /* ATTCHE */
  71         int (*irq_attch)(struct usbhs_priv *priv,
  72                          struct usbhs_irq_state *irq_state);
  73
  74         /* DTCHE */
  75         int (*irq_dtch)(struct usbhs_priv *priv,
  76                         struct usbhs_irq_state *irq_state);
  77
  78         /* SIGN */
  79         int (*irq_sign)(struct usbhs_priv *priv,
  80                         struct usbhs_irq_state *irq_state);
  81
  82         /* SACK */
  83         int (*irq_sack)(struct usbhs_priv *priv,
  84                         struct usbhs_irq_state *irq_state);
  85
  86         struct usbhs_priv *priv;
  87 };
  88
  89 struct usbhs_mod_info {
  90         struct usbhs_mod *mod[USBHS_MAX];
  91         struct usbhs_mod *curt; /* current mod */
  92
  93         /*
  94          * INTSTS0 :: VBINT
  95          *
  96          * This function will be used as autonomy mode
  97          * when platform cannot call notify_hotplug.
  98          *
  99          * This callback cannot be member of "struct usbhs_mod"
 100          * because it will be used even though
 101          * host/gadget has not been selected.
 102          */
 103         int (*irq_vbus)(struct usbhs_priv *priv,
 104                         struct usbhs_irq_state *irq_state);
 105 };
 106
 107 /*
 108  *              for host/gadget module
 109  */
 110 struct usbhs_mod *usbhs_mod_get(struct usbhs_priv *priv, int id);
 111 struct usbhs_mod *usbhs_mod_get_current(struct usbhs_priv *priv);
 112 void usbhs_mod_register(struct usbhs_priv *priv, struct usbhs_mod *usb, int id);
 113 int usbhs_mod_is_host(struct usbhs_priv *priv);
 114 int usbhs_mod_change(struct usbhs_priv *priv, int id);
 115 int usbhs_mod_probe(struct usbhs_priv *priv);
 116 void usbhs_mod_remove(struct usbhs_priv *priv);
 117
 118 void usbhs_mod_autonomy_mode(struct usbhs_priv *priv);
 119
 120 /*
 121  *              status functions
 122  */
 123 int usbhs_status_get_device_state(struct usbhs_irq_state *irq_state);
 124 int usbhs_status_get_ctrl_stage(struct usbhs_irq_state *irq_state);
 125
 126 /*
 127  *              callback functions
 128  */
 129 void usbhs_irq_callback_update(struct usbhs_priv *priv, struct usbhs_mod *mod);
 130
 131
 132 #define usbhs_mod_call(priv, func, param...)            \
 133         ({                                              \
 134                 struct usbhs_mod *mod;                  \
 135                 mod = usbhs_mod_get_current(priv);      \
 136                 !mod            ? -ENODEV :             \
 137                 !mod->func      ? 0 :                   \
 138                  mod->func(param);                      \
 139         })
 140
 141 /*
 142  * host / gadget control
 143  */
 144 #if     defined(CONFIG_USB_RENESAS_USBHS_HCD) || \
 145         defined(CONFIG_USB_RENESAS_USBHS_HCD_MODULE)
 146 extern int usbhs_mod_host_probe(struct usbhs_priv *priv);
 147 extern int usbhs_mod_host_remove(struct usbhs_priv *priv);
 148 #else
 149 static inline int usbhs_mod_host_probe(struct usbhs_priv *priv)
 150 {
 151         return 0;
 152 }
 153 static inline void usbhs_mod_host_remove(struct usbhs_priv *priv)
 154 {
 155 }
 156 #endif
 157
 158 #if     defined(CONFIG_USB_RENESAS_USBHS_UDC) || \
 159         defined(CONFIG_USB_RENESAS_USBHS_UDC_MODULE)
 160 extern int usbhs_mod_gadget_probe(struct usbhs_priv *priv);
 161 extern void usbhs_mod_gadget_remove(struct usbhs_priv *priv);
 162 #else
 163 static inline int usbhs_mod_gadget_probe(struct usbhs_priv *priv)
 164 {
 165         return 0;
 166 }
 167 static inline void usbhs_mod_gadget_remove(struct usbhs_priv *priv)
 168 {
 169 }
 170 #endif
 171
 172 #endif /* RENESAS_USB_MOD_H */