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struct pxp_irq_info is only used by PXP device driver, so it is unreasonable
to define it in pxp_dma.h which will be included by EPDC, V4L2 PXP and PXP
device driver.
Signed-off-by: Fancy Fang <B47543@freescale.com>
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This mutex lock is no longer necessary in PXP dma driver. After
the commit "ENGR00291400 PXP: Organize PXP task queue to be FIFO",
protection fields can be protected by the spin lock in PXP channel
now.
Signed-off-by: Fancy Fang <B47543@freescale.com>
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start PXP
After the commit "ffcad666548417ef21937e0a755d85ab922313a9" pushed,
adding this support in PXP device driver is also necessary. This
change allows users to submit more than one PXP tasks followd by
only one wait for finished ioctl. It means that users can wait for
more than one tasks done by calling one PXP_IOC_WAIT4CMPLT ioctl.
Signed-off-by: Fancy Fang <B47543@freescale.com>
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The requested PXP tasks were handled based on channel unit. All the
tasks in one channel were handled one by one, and the tasks in another
channel only can get chance after all the tasks in previous channel
were finished. So this may allow some channel occupies PXP hardware
exclusively all the time, and other channels may never get PXP services.
So this change makes the PXP task queue to be a FIFO to avoid this kind
of unfair usage for PXP.
Signed-off-by: Fancy Fang <B47543@freescale.com>
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initialization
In previous PXP driver, the number of tx descriptors allocated
for each channel is a constant 16 and they can only be allocated
during PXP initialization. But since the driver allows users to
queue more than one PXP tasks for each channel before issuing
pending tasks, so in this case the descriptors may be not enough
for some cases.
Signed-off-by: Fancy Fang <B47543@freescale.com>
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Move the user-space part in include/linux/pxp_dma.h into
include/uapi/linux/pxp_dma.h due to the UAPI introduced.
Signed-off-by: Robby Cai <R63905@freescale.com>
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