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kernel/linux-imx6_3.14.28/include/linux/i2c-omap.h 1.17 KB
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  #ifndef __I2C_OMAP_H__
  #define __I2C_OMAP_H__
  
  #include <linux/platform_device.h>
  
  /*
   * Version 2 of the I2C peripheral unit has a different register
   * layout and extra registers.  The ID register in the V2 peripheral
   * unit on the OMAP4430 reports the same ID as the V1 peripheral
   * unit on the OMAP3530, so we must inform the driver which IP
   * version we know it is running on from platform / cpu-specific
   * code using these constants in the hwmod class definition.
   */
  
  #define OMAP_I2C_IP_VERSION_1 1
  #define OMAP_I2C_IP_VERSION_2 2
  
  /* struct omap_i2c_bus_platform_data .flags meanings */
  
  #define OMAP_I2C_FLAG_NO_FIFO			BIT(0)
  #define OMAP_I2C_FLAG_SIMPLE_CLOCK		BIT(1)
  #define OMAP_I2C_FLAG_16BIT_DATA_REG		BIT(2)
  #define OMAP_I2C_FLAG_ALWAYS_ARMXOR_CLK	BIT(5)
  #define OMAP_I2C_FLAG_FORCE_19200_INT_CLK	BIT(6)
  /* how the CPU address bus must be translated for I2C unit access */
  #define OMAP_I2C_FLAG_BUS_SHIFT_NONE 0
  #define OMAP_I2C_FLAG_BUS_SHIFT_1		BIT(7)
  #define OMAP_I2C_FLAG_BUS_SHIFT_2		BIT(8)
  #define OMAP_I2C_FLAG_BUS_SHIFT__SHIFT 7
  
  struct omap_i2c_bus_platform_data {
  	u32		clkrate;
  	u32		rev;
  	u32		flags;
  	void		(*set_mpu_wkup_lat)(struct device *dev, long set);
  };
  
  #endif