The search logic in the gpio demux walks all possible gpio blocks starting
at the specified pin.  The trouble on bf537 parts when we demux the port
F and port G mask A interrupts is that we also demux port H mask A ints.
Most of the time this isn't an issue as people don't usually use port H,
but might as well avoid it when possible.
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

This functionality was merged into the common bfin_pm_standby_ctrl func
some time ago, so punt these now unused funcs and data, and localize the
wake funcs that aren't needed externally anymore.
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

The SIC interrupt line muxing that the bf537 does is specific to this
CPU (thankfully), so rip it out of the common code and move it to a
bf537-specific file.  This tidies up the common code significantly.
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

Prefer MMR named checks over part-specific lists, condense duplicated
code across different #ifdef branches, simplify CONFIG_PM ifdefs, and
drop unused kgdb header.
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

Seems the ipipe code just copied & pasted the existing irq lookup logic,
so pull the logic out of do_irq() and into a local helper, and convert
the two users over to that.
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

The local ivg structs need not be exported, so mark them as static.
Further, the "num_spurious" variable is only incremented and never
actually read anywhere, so punt it.
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

Convert to the new function names. Scripted with coccinelle.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: uclinux-dist-devel@blackfin.uclinux.org

Use the trigger type in irq_data and check level type instead of
looking at desc->handle_irq.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: uclinux-dist-devel@blackfin.uclinux.org

This patch introduces Blackfin-specific bits to support the current
tip of the interrupt pipeline development, mainly:

- 2/3-level interrupt maps (sparse IRQs)
- generic virq handling
- sysinfo v2 format for ipipe_get_sysinfo()
Signed-off-by: NPhilippe Gerum <rpm@xenomai.org>
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

Fixup the open coded access to irq_desc and use the proper wrappers.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

When unmasking a GPIO interrupt on a BF54x part, the code will implicitly
ack any pending interrupts.  This is not what unmasking should do and can
cause people to miss interrupts from their devices, so punt the code.
Reported-by: NRutger Hofman <rutger@cs.vu.nl>
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

This matches all the other Blackfin ports and keep us from having to write
bf561-specific code in many places.
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

Make sure we include EMAC_SYSTAT when showing errors.
Signed-off-by: NMichael Hennerich <michael.hennerich@analog.com>
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

Rename h/w IRQ flags handling functions to be in line with what is expected for
the irq renaming patch.  This renames local_*_hw() to hard_local_*() using the
following perl command:

	perl -pi -e 's/local_irq_(restore|enable|disable)_hw/hard_local_irq_\1/ or s/local_irq_save_hw([_a-z]*)[(]flags[)]/flags = hard_local_irq_save\1()/' `find arch/blackfin/ -name "*.[ch]"`

and then fixing up asm/irqflags.h manually.

Additionally, arch/hard_local_save_flags() and arch/hard_local_irq_save() both
return the flags rather than passing it through the argument list.
Signed-off-by: NDavid Howells <dhowells@redhat.com>

Tweak the for loops that operate on the SIC IAR system MMRs to avoid
re-reading them multiple times in a row.  System MMRs are a little
slower to access, so avoid the penalty when possible.
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

This patch removes a custom GPIO wakeup API which allowed GPIOs to act
as wakeup sources, which are not configured as Interrupts.
This API is a leftover from the time before irq_wake was established.
From now on people must use enable_irq_wake(GPIO_IRQx) and the GPIO in
question needs to be configured as Interrupt.
Signed-off-by: NMichael Hennerich <michael.hennerich@analog.com>
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

The on-chip keypad peripheral requires different registers to be setup
depending on the standby type (standby vs hibernation).  However, since
the power management framework doesn't differentiate between these types,
the driver doesn't know which registers to program and subsequently it
avoids doing so.

Always enabling the keyboard wakeup source causes misbehavior when the
pins are not assigned to the keypad.  If they happen to drive a certain
level, they'll trigger a wake up event which is not wanted.  So until
the aforementioned issue can be sorted out, drop support for the
wakeup source completely.
Signed-off-by: NMichael Hennerich <michael.hennerich@analog.com>
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

This patch provides infrastructure for MAC Wake-On-Lan and PHYINT use in
phylib.  New Interrupts added:

IRQ_MAC_PHYINT   /* PHY_INT Interrupt */
IRQ_MAC_MMCINT   /* MMC Counter Interrupt */
IRQ_MAC_RXFSINT  /* RX Frame-Status Interrupt */
IRQ_MAC_TXFSINT  /* TX Frame-Status Interrupt */
IRQ_MAC_WAKEDET  /* Wake-Up Interrupt */
IRQ_MAC_RXDMAERR /* RX DMA Direction Error Interrupt */
IRQ_MAC_TXDMAERR /* TX DMA Direction Error Interrupt */
IRQ_MAC_STMDONE  /* Station Mgt. Transfer Done Interrupt */

On BF537/6 the implementation is not straight forward since there are now
two chained chained_handlers.  A cleaner approach would have been to add
latter IRQs to the demux of IRQ_GENERIC_ERROR.
Signed-off-by: NMichael Hennerich <michael.hennerich@analog.com>
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

This makes room for off-chip IRQ controllers.
Signed-off-by: NMichael Hennerich <michael.hennerich@analog.com>
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

Signed-off-by: NYi Li <yi.li@analog.com>
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

SMP systems require per-cpu local clock event devices in order to enable
HRT support.  One a BF561, we can use local core timer for this purpose.
Originally, there was one global core-timer clock event device set up for
core A.

To accomplish this feat, we need to split the gptimer0/core timer logic
so that each is a standalone clock event.  There is no requirement that
we only have one clock event source anyways.  Once we have this, we just
define per-cpu clock event devices for each local core timer.
Signed-off-by: NYi Li <yi.li@analog.com>
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

Now that the Blackfin IRQ controller supports this, drivers get the normal
functionality of controlling which CPU to bind IRQs to.
Signed-off-by: NSonic Zhang <sonic.zhang@analog.com>
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

Signed-off-by: NMichael Hennerich <michael.hennerich@analog.com>
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

The error masks are only needed in the BF537 demux error code, so instead
of needing all the short peripheral defines in global space, push these
masks into the one file where they are actually needed.  This fixes a
bunch of define collisions with common code (can/serial/etc...).
Signed-off-by: NMike Frysinger <vapier@gentoo.org>
Signed-off-by: NBarry Song <barry.song@analog.com>

Signed-off-by: NMike Frysinger <vapier@gentoo.org>

Bill Gatliff & David Brownell pointed out we were missing some
copyrights, and licensing terms in some of the files in
./arch/blackfin, so this fixes things, and cleans them up.

It also removes:
 - verbose GPL text(refer to the top level ./COPYING file)
 - file names (you are looking at the file)
 - bug url (it's in the ./MAINTAINERS file)
 - "or later" on GPL-2, when we did not have that right

It also allows some Blackfin-specific assembly files to be under a BSD
like license (for people to use them outside of Linux).
Signed-off-by: NRobin Getz <robin.getz@analog.com>
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

Signed-off-by: NGraf Yang <graf.yang@analog.com>
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

The purpose of the EVT14 handler may depend on whether CONFIG_IPIPE is
enabled, albeit its implementation can be the same in both cases. When
the interrupt pipeline is enabled, EVT14 can be used to raise the core
priority level for the running code; when CONFIG_IPIPE is off, EVT14
can be used to lower this level before running softirq handlers.

Rename evt14_softirq to evt_evt14 to pick an identifier that fits
both, which allows to reuse the same vector setup code as well.
Signed-off-by: NPhilippe Gerum <rpm@xenomai.org>
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

Signed-off-by: NPhilippe Gerum <rpm@xenomai.org>
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

Convert to test_bit() as that is what pretty much everyone uses and allows
us to migrate asm/bitops.h to the asm-generic version.
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

Rather than having to maintain a hard coded list of Blackfin variants, use
the SIC defines themselves.  This fixes build problems on BF51x/BF538 under
some configurations as they were missing from one of the lists.
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

For systems where the core cycles are not a usable tick source (like SMP
or cycles gets updated), enable gptimer0 as an alternative.
Signed-off-by: NGraf Yang <graf.yang@analog.com>
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

ipipe-2.6.28.9-blackfin-git95aafe6.patch
Singed-off-by: NPhilippe Gerum <rpm@xenomai.org>
Signed-off-by: NYi Li <yi.li@analog.com>
Signed-off-by: NBryan Wu <cooloney@kernel.org>
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

Signed-off-by: NMichael Hennerich <michael.hennerich@analog.com>
Signed-off-by: NMike Frysinger <vapier@gentoo.org>
Signed-off-by: NBryan Wu <cooloney@kernel.org>

Signed-off-by: NPhilippe Gerum <rpm@xenomai.org>
Signed-off-by: NBryan Wu <cooloney@kernel.org>