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dmaengine: kill struct dma_client and supporting infrastructure

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All users have been converted to either the general-purpose allocator,
dma_find_channel, or dma_request_channel.

Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams 2009-01-06 11:38:17 -07:00
parent 209b84a88f
commit aa1e6f1a38
9 changed files with 17 additions and 232 deletions
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50
include/linux/dmaengine.h
View file

@ -28,20 +28,6 @@
#include <linux/rcupdate.h>
#include <linux/dma-mapping.h>
/**
* enum dma_state - resource PNP/power management state
* @DMA_RESOURCE_SUSPEND: DMA device going into low power state
* @DMA_RESOURCE_RESUME: DMA device returning to full power
* @DMA_RESOURCE_AVAILABLE: DMA device available to the system
* @DMA_RESOURCE_REMOVED: DMA device removed from the system
*/
enum dma_state {
DMA_RESOURCE_SUSPEND,
DMA_RESOURCE_RESUME,
DMA_RESOURCE_AVAILABLE,
DMA_RESOURCE_REMOVED,
};
/**
* enum dma_state_client - state of the channel in the client
* @DMA_ACK: client would like to use, or was using this channel
@ -170,23 +156,6 @@ struct dma_chan {
void dma_chan_cleanup(struct kref *kref);
/*
* typedef dma_event_callback - function pointer to a DMA event callback
* For each channel added to the system this routine is called for each client.
* If the client would like to use the channel it returns '1' to signal (ack)
* the dmaengine core to take out a reference on the channel and its
* corresponding device. A client must not 'ack' an available channel more
* than once. When a channel is removed all clients are notified. If a client
* is using the channel it must 'ack' the removal. A client must not 'ack' a
* removed channel more than once.
* @client - 'this' pointer for the client context
* @chan - channel to be acted upon
* @state - available or removed
*/
struct dma_client;
typedef enum dma_state_client (*dma_event_callback) (struct dma_client *client,
struct dma_chan *chan, enum dma_state state);
/**
* typedef dma_filter_fn - callback filter for dma_request_channel
* @chan: channel to be reviewed
@ -199,21 +168,6 @@ typedef enum dma_state_client (*dma_event_callback) (struct dma_client *client,
*/
typedef enum dma_state_client (*dma_filter_fn)(struct dma_chan *chan, void *filter_param);
/**
* struct dma_client - info on the entity making use of DMA services
* @event_callback: func ptr to call when something happens
* @cap_mask: only return channels that satisfy the requested capabilities
* a value of zero corresponds to any capability
* @slave: data for preparing slave transfer. Must be non-NULL iff the
* DMA_SLAVE capability is requested.
* @global_node: list_head for global dma_client_list
*/
struct dma_client {
dma_event_callback event_callback;
dma_cap_mask_t cap_mask;
struct list_head global_node;
};
typedef void (*dma_async_tx_callback)(void *dma_async_param);
/**
* struct dma_async_tx_descriptor - async transaction descriptor
@ -285,8 +239,7 @@ struct dma_device {
int dev_id;
struct device *dev;
int (*device_alloc_chan_resources)(struct dma_chan *chan,
struct dma_client *client);
int (*device_alloc_chan_resources)(struct dma_chan *chan);
void (*device_free_chan_resources)(struct dma_chan *chan);
struct dma_async_tx_descriptor *(*device_prep_dma_memcpy)(
@ -320,7 +273,6 @@ struct dma_device {
void dmaengine_get(void);
void dmaengine_put(void);
void dma_async_client_chan_request(struct dma_client *client);
dma_cookie_t dma_async_memcpy_buf_to_buf(struct dma_chan *chan,
void *dest, void *src, size_t len);
dma_cookie_t dma_async_memcpy_buf_to_pg(struct dma_chan *chan,