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#ifndef __LINUX_ACPI_DMA_H
#define __LINUX_ACPI_DMA_H
#include <linux/list.h>
#include <linux/device.h>
#include <linux/dmaengine.h>
struct acpi_dma_spec {
int chan_id;
int slave_id;
struct device *dev;
};
struct acpi_dma {
struct list_head dma_controllers;
struct device *dev;
struct dma_chan *(*acpi_dma_xlate)
(struct acpi_dma_spec *, struct acpi_dma *);
void *data;
unsigned short base_request_line;
unsigned short end_request_line;
};
struct acpi_dma_filter_info {
dma_cap_mask_t dma_cap;
dma_filter_fn filter_fn;
};
#ifdef CONFIG_DMA_ACPI
int acpi_dma_controller_register(struct device *dev,
struct dma_chan *(*acpi_dma_xlate)
(struct acpi_dma_spec *, struct acpi_dma *),
void *data);
int acpi_dma_controller_free(struct device *dev);
int devm_acpi_dma_controller_register(struct device *dev,
struct dma_chan *(*acpi_dma_xlate)
(struct acpi_dma_spec *, struct acpi_dma *),
void *data);
void devm_acpi_dma_controller_free(struct device *dev);
struct dma_chan *acpi_dma_request_slave_chan_by_index(struct device *dev,
size_t index);
struct dma_chan *acpi_dma_request_slave_chan_by_name(struct device *dev,
const char *name);
struct dma_chan *acpi_dma_simple_xlate(struct acpi_dma_spec *dma_spec,
struct acpi_dma *adma);
#else
static inline int acpi_dma_controller_register(struct device *dev,
struct dma_chan *(*acpi_dma_xlate)
(struct acpi_dma_spec *, struct acpi_dma *),
void *data)
{
return -ENODEV;
}
static inline int acpi_dma_controller_free(struct device *dev)
{
return -ENODEV;
}
static inline int devm_acpi_dma_controller_register(struct device *dev,
struct dma_chan *(*acpi_dma_xlate)
(struct acpi_dma_spec *, struct acpi_dma *),
void *data)
{
return -ENODEV;
}
static inline void devm_acpi_dma_controller_free(struct device *dev)
{
}
static inline struct dma_chan *acpi_dma_request_slave_chan_by_index(
struct device *dev, size_t index)
{
return NULL;
}
static inline struct dma_chan *acpi_dma_request_slave_chan_by_name(
struct device *dev, const char *name)
{
return NULL;
}
#define acpi_dma_simple_xlate NULL
#endif
#define acpi_dma_request_slave_channel acpi_dma_request_slave_chan_by_index
#endif /* __LINUX_ACPI_DMA_H */
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