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         u16 dvstctr;
  34 };
  35
  36 struct usbhs_mod {
  37         char *name;
  38
  39         /*
  40          * entry point from common.c
  41          */
  42         int (*start)(struct usbhs_priv *priv);
  43         int (*stop)(struct usbhs_priv *priv);
  44
  45         /* INTSTS0 :: DVST (DVSQ) */
  46         int (*irq_dev_state)(struct usbhs_priv *priv,
  47                              struct usbhs_irq_state *irq_state);
  48
  49         /* INTSTS0 :: CTRT (CTSQ) */
  50         int (*irq_ctrl_stage)(struct usbhs_priv *priv,
  51                               struct usbhs_irq_state *irq_state);
  52
  53         /* INTSTS0 :: BEMP */
  54         /* BEMPSTS */
  55         int (*irq_empty)(struct usbhs_priv *priv,
  56                          struct usbhs_irq_state *irq_state);
  57         u16 irq_bempsts;
  58
  59         /* INTSTS0 :: BRDY */
  60         /* BRDYSTS */
  61         int (*irq_ready)(struct usbhs_priv *priv,
  62                          struct usbhs_irq_state *irq_state);
  63         u16 irq_brdysts;
  64
  65         struct usbhs_priv *priv;
  66 };
  67
  68 struct usbhs_mod_info {
  69         struct usbhs_mod *mod[USBHS_MAX];
  70         struct usbhs_mod *curt; /* current mod */
  71 };
  72
  73 /*
  74  *              for host/gadget module
  75  */
  76 struct usbhs_mod *usbhs_mod_get(struct usbhs_priv *priv, int id);
  77 struct usbhs_mod *usbhs_mod_get_current(struct usbhs_priv *priv);
  78 void usbhs_mod_register(struct usbhs_priv *priv, struct usbhs_mod *usb, int id);
  79 int usbhs_mod_is_host(struct usbhs_priv *priv, struct usbhs_mod *mod);
  80 int usbhs_mod_change(struct usbhs_priv *priv, int id);
  81 int usbhs_mod_probe(struct usbhs_priv *priv);
  82 void usbhs_mod_remove(struct usbhs_priv *priv);
  83
  84 /*
  85  *              status functions
  86  */
  87 int usbhs_status_get_usb_speed(struct usbhs_irq_state *irq_state);
  88 int usbhs_status_get_device_state(struct usbhs_irq_state *irq_state);
  89 int usbhs_status_get_ctrl_stage(struct usbhs_irq_state *irq_state);
  90
  91 /*
  92  *              callback functions
  93  */
  94 void usbhs_irq_callback_update(struct usbhs_priv *priv, struct usbhs_mod *mod);
  95
  96
  97 #define usbhs_mod_call(priv, func, param...)            \
  98         ({                                              \
  99                 struct usbhs_mod *mod;                  \
 100                 mod = usbhs_mod_get_current(priv);      \
 101                 !mod            ? -ENODEV :             \
 102                 !mod->func      ? 0 :                   \
 103                  mod->func(param);                      \
 104         })
 105
 106 /*
 107  * gadget control
 108  */
 109 #ifdef CONFIG_USB_RENESAS_USBHS_UDC
 110 extern int __devinit usbhs_mod_gadget_probe(struct usbhs_priv *priv);
 111 extern void __devexit usbhs_mod_gadget_remove(struct usbhs_priv *priv);
 112 #else
 113 static inline int usbhs_mod_gadget_probe(struct usbhs_priv *priv)
 114 {
 115         return 0;
 116 }
 117 static inline void usbhs_mod_gadget_remove(struct usbhs_priv *priv)
 118 {
 119 }
 120 #endif
 121
 122 #endif /* RENESAS_USB_MOD_H */