i2c.h 1.7 KB

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  1. /*
  2. * Helper module for board specific I2C bus registration
  3. *
  4. * Copyright (C) 2009 Nokia Corporation.
  5. *
  6. * This program is free software; you can redistribute it and/or
  7. * modify it under the terms of the GNU General Public License
  8. * version 2 as published by the Free Software Foundation.
  9. *
  10. * This program is distributed in the hope that it will be useful, but
  11. * WITHOUT ANY WARRANTY; without even the implied warranty of
  12. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  13. * 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., 51 Franklin St, Fifth Floor, Boston, MA
  18. * 02110-1301 USA
  19. *
  20. */
  21. #ifndef __ASM__ARCH_OMAP_I2C_H
  22. #define __ASM__ARCH_OMAP_I2C_H
  23. #include <linux/i2c.h>
  24. #include <linux/i2c-omap.h>
  25. #if defined(CONFIG_I2C_OMAP) || defined(CONFIG_I2C_OMAP_MODULE)
  26. extern int omap_register_i2c_bus(int bus_id, u32 clkrate,
  27. struct i2c_board_info const *info,
  28. unsigned len);
  29. #else
  30. static inline int omap_register_i2c_bus(int bus_id, u32 clkrate,
  31. struct i2c_board_info const *info,
  32. unsigned len)
  33. {
  34. return 0;
  35. }
  36. #endif
  37. /**
  38. * i2c_dev_attr - OMAP I2C controller device attributes for omap_hwmod
  39. * @fifo_depth: total controller FIFO size (in bytes)
  40. * @flags: differences in hardware support capability
  41. *
  42. * @fifo_depth represents what exists on the hardware, not what is
  43. * actually configured at runtime by the device driver.
  44. */
  45. struct omap_i2c_dev_attr {
  46. u8 fifo_depth;
  47. u32 flags;
  48. };
  49. void __init omap1_i2c_mux_pins(int bus_id);
  50. void __init omap2_i2c_mux_pins(int bus_id);
  51. struct omap_hwmod;
  52. int omap_i2c_reset(struct omap_hwmod *oh);
  53. #endif /* __ASM__ARCH_OMAP_I2C_H */