drivers/ssi/omap-uwire.h

   1 #ifndef __ARCH_OMAP_UWIRE_H
   2 #define __ARCH_OMAP_UWIRE_H
   3
   4 #define UWIRE_READ_FALLING_EDGE         0x0000
   5 #define UWIRE_READ_RISING_EDGE          0x0001
   6 #define UWIRE_WRITE_FALLING_EDGE        0x0000
   7 #define UWIRE_WRITE_RISING_EDGE         0x0002
   8 #define UWIRE_CS_ACTIVE_LOW             0x0000
   9 #define UWIRE_CS_ACTIVE_HIGH            0x0004
  10 #define UWIRE_FREQ_DIV_2                0x0000
  11 #define UWIRE_FREQ_DIV_4                0x0008
  12 #define UWIRE_FREQ_DIV_8                0x0010
  13 #define UWIRE_CHK_READY                 0x0020
  14 #define UWIRE_CLK_INVERTED              0x0040
  15
  16 /*
  17  * uWire for OMAP declarations
  18  */
  19 extern void omap_uwire_configure_mode(int cs, unsigned long flags);
  20
  21 /* NOTE: Make sure you don't call this from an interrupt handler! */
  22 extern int omap_uwire_data_transfer(int cs, u16 tx_data, int tx_size,
  23                                     int rx_size, u16 *rx_buf,
  24                                     int leave_cs_active);
  25
  26 #endif