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Commit 7fa0cf46 authored by Maxime Ripard's avatar Maxime Ripard Committed by Vinod Koul
Browse files

dmaengine: Add device_terminate_all callback 



Split out the terminate_all command from device_control to a dma_device
callback. In order to preserve backward capability, still rely on
device_control if no such callback has been implemented.

Eventually, this will allow to create a generic dma_slave_caps callback.

Signed-off-by: default avatarMaxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: default avatarLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
parent 23a3ea2f

include/linux/dmaengine.h

+6 −0
Original line number Diff line number Diff line
@@ -616,6 +616,8 @@ struct dma_tx_state { 
 *	0 or an error code

 * @device_resume: Resumes any transfer on a channel previously

 *	paused. Returns 0 or an error code

 * @device_terminate_all: Aborts all transfers on a channel. Returns 0

 *	or an error code

 * @device_tx_status: poll for transaction completion, the optional

 *	txstate parameter can be supplied with a pointer to get a

 *	struct with auxiliary transfer status information, otherwise the call
@@ -687,6 +689,7 @@ struct dma_device { 
		unsigned long arg);

	int (*device_pause)(struct dma_chan *chan);

	int (*device_resume)(struct dma_chan *chan);

	int (*device_terminate_all)(struct dma_chan *chan);



	enum dma_status (*device_tx_status)(struct dma_chan *chan,

					    dma_cookie_t cookie,
@@ -796,6 +799,9 @@ static inline int dma_get_slave_caps(struct dma_chan *chan, struct dma_slave_cap 


static inline int dmaengine_terminate_all(struct dma_chan *chan)

{

	if (chan->device->device_terminate_all)

		return chan->device->device_terminate_all(chan);



	return dmaengine_device_control(chan, DMA_TERMINATE_ALL, 0);

}