drivers/media/video/pvrusb2/pvrusb2-i2c-core.h

   1 /*
   2  *
   3  *  $Id$
   4  *
   5  *  Copyright (C) 2005 Mike Isely <isely@pobox.com>
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 2 of the License
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program; if not, write to the Free Software
  18  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  */
  21 #ifndef __PVRUSB2_I2C_CORE_H
  22 #define __PVRUSB2_I2C_CORE_H
  23
  24 #include <linux/list.h>
  25 #include <linux/i2c.h>
  26
  27 struct pvr2_hdw;
  28 struct pvr2_i2c_client;
  29 struct pvr2_i2c_handler;
  30 struct pvr2_i2c_handler_functions;
  31 struct pvr2_i2c_op;
  32 struct pvr2_i2c_op_functions;
  33
  34 struct pvr2_i2c_client {
  35         struct i2c_client *client;
  36         struct pvr2_i2c_handler *handler;
  37         struct list_head list;
  38         struct pvr2_hdw *hdw;
  39         int detected_flag;
  40         int recv_enable;
  41         unsigned long pend_mask;
  42         unsigned long ctl_mask;
  43         void (*status_poll)(struct pvr2_i2c_client *);
  44 };
  45
  46 struct pvr2_i2c_handler {
  47         void *func_data;
  48         const struct pvr2_i2c_handler_functions *func_table;
  49 };
  50
  51 struct pvr2_i2c_handler_functions {
  52         void (*detach)(void *);
  53         int (*check)(void *);
  54         void (*update)(void *);
  55         unsigned int (*describe)(void *,char *,unsigned int);
  56 };
  57
  58 struct pvr2_i2c_op {
  59         int (*check)(struct pvr2_hdw *);
  60         void (*update)(struct pvr2_hdw *);
  61         const char *name;
  62 };
  63
  64 void pvr2_i2c_core_init(struct pvr2_hdw *);
  65 void pvr2_i2c_core_done(struct pvr2_hdw *);
  66
  67 int pvr2_i2c_client_cmd(struct pvr2_i2c_client *,unsigned int cmd,void *arg);
  68 int pvr2_i2c_core_cmd(struct pvr2_hdw *,unsigned int cmd,void *arg);
  69
  70 int pvr2_i2c_core_check_stale(struct pvr2_hdw *);
  71 void pvr2_i2c_core_sync(struct pvr2_hdw *);
  72 void pvr2_i2c_core_status_poll(struct pvr2_hdw *);
  73 unsigned int pvr2_i2c_report(struct pvr2_hdw *,char *buf,unsigned int maxlen);
  74 #define PVR2_I2C_DETAIL_DEBUG   0x0001
  75 #define PVR2_I2C_DETAIL_HANDLER 0x0002
  76 #define PVR2_I2C_DETAIL_CTLMASK 0x0004
  77 #define PVR2_I2C_DETAIL_ALL (\
  78         PVR2_I2C_DETAIL_DEBUG |\
  79         PVR2_I2C_DETAIL_HANDLER |\
  80         PVR2_I2C_DETAIL_CTLMASK)
  81
  82 void pvr2_i2c_probe(struct pvr2_hdw *,struct pvr2_i2c_client *);
  83 const struct pvr2_i2c_op *pvr2_i2c_get_op(unsigned int idx);
  84
  85 #endif /* __PVRUSB2_I2C_CORE_H */
  86
  87
  88 /*
  89   Stuff for Emacs to see, in order to encourage consistent editing style:
  90   *** Local Variables: ***
  91   *** mode: c ***
  92   *** fill-column: 75 ***
  93   *** tab-width: 8 ***
  94   *** c-basic-offset: 8 ***
  95   *** End: ***
  96   */