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Change irq_pending field in struct pxp_irq_info to a atomic
type. So the spin lock in pxp_irq_info is unnecessary.
Signed-off-by: Fancy Fang <B47543@freescale.com>
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The allocated DMA channels via some opened file descriptor is better
to be bound to this descriptor. Since this can avoid some application
to fake a channel id which may be requested by other applications to
request PXP service. And also, this make it easier to release the dma
channel when application exists abnormally or forgets to release it
explicitly.
Signed-off-by: Fancy Fang <B47543@freescale.com>
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Create pxp_info struct data for each opened device file descriptor.
And bind all the allocated dma buffers to this struct for each opened
file. This makes the dma buffer lists management safer, more effective
and more flexible.
Signed-off-by: Fancy Fang <B47543@freescale.com>
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Move two struct definitions defined in pxp_device.c to pxp_device.h.
Now the pxp_device.h has been created for PXP device driver. So all
the type definition should stay in header file not c source file.
Signed-off-by: Fancy Fang <B47543@freescale.com>
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header file
Some definitions used only by PXP device driver should not stay in
pxp_dma.h which is shared by PXP, EPDC and V4L2. So the patch creates
a new header file pxp_device.h to hold these definitions.
Signed-off-by: Fancy Fang <B47543@freescale.com>
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