drivers/spi/spi-fsl-cpm.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Freescale SPI controller driver cpm functions.
   4  *
   5  * Maintainer: Kumar Gala
   6  *
   7  * Copyright (C) 2006 Polycom, Inc.
   8  * Copyright 2010 Freescale Semiconductor, Inc.
   9  *
  10  * CPM SPI and QE buffer descriptors mode support:
  11  * Copyright (c) 2009  MontaVista Software, Inc.
  12  * Author: Anton Vorontsov <avorontsov@ru.mvista.com>
  13  */
  14
  15 #ifndef __SPI_FSL_CPM_H__
  16 #define __SPI_FSL_CPM_H__
  17
  18 #include "spi-fsl-lib.h"
  19
  20 #ifdef CONFIG_FSL_SOC
  21 extern void fsl_spi_cpm_reinit_txrx(struct mpc8xxx_spi *mspi);
  22 extern int fsl_spi_cpm_bufs(struct mpc8xxx_spi *mspi,
  23                             struct spi_transfer *t, bool is_dma_mapped);
  24 extern void fsl_spi_cpm_bufs_complete(struct mpc8xxx_spi *mspi);
  25 extern void fsl_spi_cpm_irq(struct mpc8xxx_spi *mspi, u32 events);
  26 extern int fsl_spi_cpm_init(struct mpc8xxx_spi *mspi);
  27 extern void fsl_spi_cpm_free(struct mpc8xxx_spi *mspi);
  28 #else
  29 static inline void fsl_spi_cpm_reinit_txrx(struct mpc8xxx_spi *mspi) { }
  30 static inline int fsl_spi_cpm_bufs(struct mpc8xxx_spi *mspi,
  31                                    struct spi_transfer *t,
  32                                    bool is_dma_mapped) { return 0; }
  33 static inline void fsl_spi_cpm_bufs_complete(struct mpc8xxx_spi *mspi) { }
  34 static inline void fsl_spi_cpm_irq(struct mpc8xxx_spi *mspi, u32 events) { }
  35 static inline int fsl_spi_cpm_init(struct mpc8xxx_spi *mspi) { return 0; }
  36 static inline void fsl_spi_cpm_free(struct mpc8xxx_spi *mspi) { }
  37 #endif
  38
  39 #endif /* __SPI_FSL_CPM_H__ */