xc5000.h 2.1 KB

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  1. /*
  2. * Driver for Xceive XC5000 "QAM/8VSB single chip tuner"
  3. *
  4. * Copyright (c) 2007 Steven Toth <stoth@hauppauge.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. *
  15. * GNU General Public License for more details.
  16. *
  17. * You should have received a copy of the GNU General Public License
  18. * along with this program; if not, write to the Free Software
  19. * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20. */
  21. #ifndef __XC5000_H__
  22. #define __XC5000_H__
  23. #include <linux/firmware.h>
  24. struct dvb_frontend;
  25. struct i2c_adapter;
  26. struct xc5000_config {
  27. u8 i2c_address;
  28. u32 if_khz;
  29. int (*tuner_callback) (void *priv, int command, int arg);
  30. };
  31. /* xc5000 callback command */
  32. #define XC5000_TUNER_RESET 0
  33. /* For each bridge framework, when it attaches either analog or digital,
  34. * it has to store a reference back to its _core equivalent structure,
  35. * so that it can service the hardware by steering gpio's etc.
  36. * Each bridge implementation is different so cast devptr accordingly.
  37. * The xc5000 driver cares not for this value, other than ensuring
  38. * it's passed back to a bridge during tuner_callback().
  39. */
  40. #if defined(CONFIG_MEDIA_TUNER_XC5000) || \
  41. (defined(CONFIG_MEDIA_TUNER_XC5000_MODULE) && defined(MODULE))
  42. extern struct dvb_frontend* xc5000_attach(struct dvb_frontend *fe,
  43. struct i2c_adapter *i2c,
  44. struct xc5000_config *cfg,
  45. void *devptr);
  46. #else
  47. static inline struct dvb_frontend* xc5000_attach(struct dvb_frontend *fe,
  48. struct i2c_adapter *i2c,
  49. struct xc5000_config *cfg,
  50. void *devptr)
  51. {
  52. printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
  53. return NULL;
  54. }
  55. #endif // CONFIG_MEDIA_TUNER_XC5000
  56. #endif // __XC5000_H__