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

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