i2c-mux-reg.h 1.2 KB

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  1. /* SPDX-License-Identifier: GPL-2.0-or-later */
  2. /*
  3. * I2C multiplexer using a single register
  4. *
  5. * Copyright 2015 Freescale Semiconductor
  6. * York Sun <[email protected]>
  7. */
  8. #ifndef __LINUX_PLATFORM_DATA_I2C_MUX_REG_H
  9. #define __LINUX_PLATFORM_DATA_I2C_MUX_REG_H
  10. /**
  11. * struct i2c_mux_reg_platform_data - Platform-dependent data for i2c-mux-reg
  12. * @parent: Parent I2C bus adapter number
  13. * @base_nr: Base I2C bus number to number adapters from or zero for dynamic
  14. * @values: Array of value for each channel
  15. * @n_values: Number of multiplexer channels
  16. * @little_endian: Indicating if the register is in little endian
  17. * @write_only: Reading the register is not allowed by hardware
  18. * @classes: Optional I2C auto-detection classes
  19. * @idle: Value to write to mux when idle
  20. * @idle_in_use: indicate if idle value is in use
  21. * @reg: Virtual address of the register to switch channel
  22. * @reg_size: register size in bytes
  23. */
  24. struct i2c_mux_reg_platform_data {
  25. int parent;
  26. int base_nr;
  27. const unsigned int *values;
  28. int n_values;
  29. bool little_endian;
  30. bool write_only;
  31. const unsigned int *classes;
  32. u32 idle;
  33. bool idle_in_use;
  34. void __iomem *reg;
  35. resource_size_t reg_size;
  36. };
  37. #endif /* __LINUX_PLATFORM_DATA_I2C_MUX_REG_H */