diff options
Diffstat (limited to 'drivers/usb/musb/musb_dma.h')
| -rw-r--r-- | drivers/usb/musb/musb_dma.h | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/usb/musb/musb_dma.h b/drivers/usb/musb/musb_dma.h index 916065ba9e7..a114af6c330 100644 --- a/drivers/usb/musb/musb_dma.h +++ b/drivers/usb/musb/musb_dma.h @@ -36,7 +36,7 @@ #define __MUSB_DMA_H__ struct musb_hw_ep; - +struct musb_request; /* * DMA Controller Abstraction * @@ -91,6 +91,10 @@ struct musb_hw_ep; # endif #endif +#ifdef CONFIG_USB_U8500_DMA +#undef USE_MODE1 +#endif + /* * DMA channel status ... updated by the dma controller driver whenever that * status changes, and protected by the overall controller spinlock. @@ -155,6 +159,10 @@ dma_channel_status(struct dma_channel *c) * @channel_release: call this to release a DMA channel * @channel_abort: call this to abort a pending DMA transaction, * returning it to FREE (but allocated) state + * @is_compatible:allow dma code to indicate incompatibility + * with usb request. Gadget musb driver call this api, if + * available, before dma mappings to avoid any unnecessary + * mapping operations. * * Controllers manage dma channels. */ @@ -169,6 +177,8 @@ struct dma_controller { dma_addr_t dma_addr, u32 length); int (*channel_abort)(struct dma_channel *); + int (*is_compatible)(struct dma_channel *channel, + struct musb_request *); }; /* called after channel_program(), may indicate a fault */ |