include/linux/i2c-omap.h

   1 #ifndef __I2C_OMAP_H__
   2 #define __I2C_OMAP_H__
   3
   4 #include <linux/platform_device.h>
   5
   6 /*
   7  * Version 2 of the I2C peripheral unit has a different register
   8  * layout and extra registers.  The ID register in the V2 peripheral
   9  * unit on the OMAP4430 reports the same ID as the V1 peripheral
  10  * unit on the OMAP3530, so we must inform the driver which IP
  11  * version we know it is running on from platform / cpu-specific
  12  * code using these constants in the hwmod class definition.
  13  */
  14
  15 #define OMAP_I2C_IP_VERSION_1 1
  16 #define OMAP_I2C_IP_VERSION_2 2
  17
  18 /* struct omap_i2c_bus_platform_data .flags meanings */
  19
  20 #define OMAP_I2C_FLAG_NO_FIFO                   BIT(0)
  21 #define OMAP_I2C_FLAG_SIMPLE_CLOCK              BIT(1)
  22 #define OMAP_I2C_FLAG_16BIT_DATA_REG            BIT(2)
  23 #define OMAP_I2C_FLAG_RESET_REGS_POSTIDLE       BIT(3)
  24 #define OMAP_I2C_FLAG_APPLY_ERRATA_I207 BIT(4)
  25 #define OMAP_I2C_FLAG_ALWAYS_ARMXOR_CLK BIT(5)
  26 #define OMAP_I2C_FLAG_FORCE_19200_INT_CLK       BIT(6)
  27 /* how the CPU address bus must be translated for I2C unit access */
  28 #define OMAP_I2C_FLAG_BUS_SHIFT_NONE 0
  29 #define OMAP_I2C_FLAG_BUS_SHIFT_1               BIT(7)
  30 #define OMAP_I2C_FLAG_BUS_SHIFT_2               BIT(8)
  31 #define OMAP_I2C_FLAG_BUS_SHIFT__SHIFT 7
  32
  33 struct omap_i2c_bus_platform_data {
  34         u32             clkrate;
  35         void            (*set_mpu_wkup_lat)(struct device *dev, long set);
  36         int             (*device_enable) (struct platform_device *pdev);
  37         int             (*device_shutdown) (struct platform_device *pdev);
  38         int             (*device_idle) (struct platform_device *pdev);
  39 };
  40
  41 #endif