| /* |
| * ni_labpc ISA DMA support. |
| */ |
| |
| #ifndef _NI_LABPC_ISADMA_H |
| #define _NI_LABPC_ISADMA_H |
| |
| #define NI_LABPC_HAVE_ISA_DMA IS_ENABLED(CONFIG_COMEDI_NI_LABPC_ISADMA) |
| |
| #if NI_LABPC_HAVE_ISA_DMA |
| |
| static inline bool labpc_have_dma_chan(struct comedi_device *dev) |
| { |
| struct labpc_private *devpriv = dev->private; |
| |
| return (bool)devpriv->dma_chan; |
| } |
| |
| int labpc_init_dma_chan(struct comedi_device *dev, unsigned int dma_chan); |
| void labpc_free_dma_chan(struct comedi_device *dev); |
| void labpc_setup_dma(struct comedi_device *dev, struct comedi_subdevice *s); |
| void labpc_drain_dma(struct comedi_device *dev); |
| void labpc_handle_dma_status(struct comedi_device *dev); |
| |
| #else |
| |
| static inline bool labpc_have_dma_chan(struct comedi_device *dev) |
| { |
| return false; |
| } |
| |
| static inline int labpc_init_dma_chan(struct comedi_device *dev, |
| unsigned int dma_chan) |
| { |
| return -ENOTSUPP; |
| } |
| |
| static inline void labpc_free_dma_chan(struct comedi_device *dev) |
| { |
| } |
| |
| static inline void labpc_setup_dma(struct comedi_device *dev, |
| struct comedi_subdevice *s) |
| { |
| } |
| |
| static inline void labpc_drain_dma(struct comedi_device *dev) |
| { |
| } |
| |
| static inline void labpc_handle_dma_status(struct comedi_device *dev) |
| { |
| } |
| |
| #endif |
| |
| #endif /* _NI_LABPC_ISADMA_H */ |
