LXR uboot/include/spmi/spmi.h

   1#ifndef _SPMI_SPMI_H
   2#define _SPMI_SPMI_H
   3
   4/**
   5 * struct dm_spmi_ops - SPMI device I/O interface
   6 *
   7 * Should be implemented by UCLASS_SPMI device drivers. The standard
   8 * device operations provides the I/O interface for it's childs.
   9 *
  10 * @read:      read register 'reg' of slave 'usid' and peripheral 'pid'
  11 * @write:     write register 'reg' of slave 'usid' and peripheral 'pid'
  12 *
  13 * Each register is 8-bit, both read and write can return negative values
  14 * on error.
  15 */
  16struct dm_spmi_ops {
  17        int (*read)(struct udevice *dev, int usid, int pid, int reg);
  18        int (*write)(struct udevice *dev, int usid, int pid, int reg,
  19                     uint8_t value);
  20};
  21
  22/**
  23 * spmi_reg_read() - read a register from specific slave/peripheral
  24 *
  25 * @dev:        SPMI bus to read
  26 * @usid        SlaveID
  27 * @pid         Peripheral ID
  28 * @reg:        Register to read
  29 * @return value read on success or negative value of errno.
  30 */
  31int spmi_reg_read(struct udevice *dev, int usid, int pid, int reg);
  32
  33/**
  34 * spmi_reg_write() - write a register of specific slave/peripheral
  35 *
  36 * @dev:        SPMI bus to write
  37 * @usid        SlaveID
  38 * @pid         Peripheral ID
  39 * @reg:        Register to write
  40 * @value:      Value to write
  41 * @return 0 on success or negative value of errno.
  42 */
  43int spmi_reg_write(struct udevice *dev, int usid, int pid, int reg,
  44                   uint8_t value);
  45
  46#endif
  47