drivers/staging/comedi/drivers/ni_labpc_isadma.h

   1 /*
   2  * ni_labpc ISA DMA support.
   3 */
   4
   5 #ifndef _NI_LABPC_ISADMA_H
   6 #define _NI_LABPC_ISADMA_H
   7
   8 #define NI_LABPC_HAVE_ISA_DMA   IS_ENABLED(CONFIG_COMEDI_NI_LABPC_ISADMA)
   9
  10 #if NI_LABPC_HAVE_ISA_DMA
  11
  12 int labpc_init_dma_chan(struct comedi_device *dev, unsigned int dma_chan);
  13 void labpc_free_dma_chan(struct comedi_device *dev);
  14
  15 #else
  16
  17 static inline int labpc_init_dma_chan(struct comedi_device *dev,
  18                                       unsigned int dma_chan)
  19 {
  20         return -ENOTSUPP;
  21 }
  22
  23 static inline void labpc_free_dma_chan(struct comedi_device *dev)
  24 {
  25 }
  26
  27 #endif
  28
  29 #endif /* _NI_LABPC_ISADMA_H */