drivers/spi/spi-fsl-cpm.h

   1 /*
   2  * Freescale SPI controller driver cpm functions.
   3  *
   4  * Maintainer: Kumar Gala
   5  *
   6  * Copyright (C) 2006 Polycom, Inc.
   7  * Copyright 2010 Freescale Semiconductor, Inc.
   8  *
   9  * CPM SPI and QE buffer descriptors mode support:
  10  * Copyright (c) 2009  MontaVista Software, Inc.
  11  * Author: Anton Vorontsov <avorontsov@ru.mvista.com>
  12  *
  13  * This program is free software; you can redistribute  it and/or modify it
  14  * under  the terms of  the GNU General  Public License as published by the
  15  * Free Software Foundation;  either version 2 of the  License, or (at your
  16  * option) any later version.
  17  */
  18
  19 #ifndef __SPI_FSL_CPM_H__
  20 #define __SPI_FSL_CPM_H__
  21
  22 #include "spi-fsl-lib.h"
  23
  24 #ifdef CONFIG_FSL_SOC
  25 extern void fsl_spi_cpm_reinit_txrx(struct mpc8xxx_spi *mspi);
  26 extern int fsl_spi_cpm_bufs(struct mpc8xxx_spi *mspi,
  27                             struct spi_transfer *t, bool is_dma_mapped);
  28 extern void fsl_spi_cpm_bufs_complete(struct mpc8xxx_spi *mspi);
  29 extern void fsl_spi_cpm_irq(struct mpc8xxx_spi *mspi, u32 events);
  30 extern int fsl_spi_cpm_init(struct mpc8xxx_spi *mspi);
  31 extern void fsl_spi_cpm_free(struct mpc8xxx_spi *mspi);
  32 #else
  33 static inline void fsl_spi_cpm_reinit_txrx(struct mpc8xxx_spi *mspi) { }
  34 static inline int fsl_spi_cpm_bufs(struct mpc8xxx_spi *mspi,
  35                                    struct spi_transfer *t,
  36                                    bool is_dma_mapped) { return 0; }
  37 static inline void fsl_spi_cpm_bufs_complete(struct mpc8xxx_spi *mspi) { }
  38 static inline void fsl_spi_cpm_irq(struct mpc8xxx_spi *mspi, u32 events) { }
  39 static inline int fsl_spi_cpm_init(struct mpc8xxx_spi *mspi) { return 0; }
  40 static inline void fsl_spi_cpm_free(struct mpc8xxx_spi *mspi) { }
  41 #endif
  42
  43 #endif /* __SPI_FSL_CPM_H__ */