drivers/media/dvb-frontends/isl6423.h

   1 /*
   2         Intersil ISL6423 SEC and LNB Power supply controller
   3
   4         Copyright (C) Manu Abraham <abraham.manu@gmail.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, or
   9         (at your option) any later version.
  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., 675 Mass Ave, Cambridge, MA 02139, USA.
  19 */
  20
  21 #ifndef __ISL_6423_H
  22 #define __ISL_6423_H
  23
  24 #include <linux/dvb/frontend.h>
  25
  26 enum isl6423_current {
  27         SEC_CURRENT_275m = 0,
  28         SEC_CURRENT_515m,
  29         SEC_CURRENT_635m,
  30         SEC_CURRENT_800m,
  31 };
  32
  33 enum isl6423_curlim {
  34         SEC_CURRENT_LIM_ON = 1,
  35         SEC_CURRENT_LIM_OFF
  36 };
  37
  38 struct isl6423_config {
  39         enum isl6423_current current_max;
  40         enum isl6423_curlim curlim;
  41         u8 addr;
  42         u8 mod_extern;
  43 };
  44
  45 #if IS_REACHABLE(CONFIG_DVB_ISL6423)
  46
  47
  48 extern struct dvb_frontend *isl6423_attach(struct dvb_frontend *fe,
  49                                            struct i2c_adapter *i2c,
  50                                            const struct isl6423_config *config);
  51
  52 #else
  53 static inline struct dvb_frontend *isl6423_attach(struct dvb_frontend *fe,
  54                                                   struct i2c_adapter *i2c,
  55                                                   const struct isl6423_config *config)
  56 {
  57         printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  58         return NULL;
  59 }
  60
  61 #endif /* CONFIG_DVB_ISL6423 */
  62
  63 #endif /* __ISL_6423_H */