Simplify twl4030 IRQ handling by removing a needless custom flow
handler.  The top level IRQs, from the PIH, are well suited for
handle_simple_irq() ... they can't be acked or masked.

Switching resolves some issues with how IRQs were dispatched.
Notably, abuse of desc->status, IRQ accounting, and handling
of various faults.

In short, use standard genirq code.

Drivers that request_irq() to the PIH will need to pay more
attention to things like setting IRQF_DISABLED (since it's
no longer ignored), and making I2C calls from handlers (you'll
need a lockdep workaround).
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>

Bugfixes to TWL subdriver irq handler setup ... lockdep
workarounds, remove IRQF_DISABLED.  NOPs with current code.

These changes are specific to the drivers which register
directly with the PIH irq_chip (in twl4030-core), and are
prerequsites to a cleanup patch for that PIH infrastructure.
(Unless you don't use these drivers.)
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>

Request two more GPIOs on Beagle:  MMC write protect, DVI enable.

Also define the first OMAP3 GPIO mux config symbols, with a new
naming convention.  Examples:

  - GPIO42 is bidirectional, and uses external pull up/down (if any);
  - GPIO42_UP is bidirectional, with an internal pullup;
  - GPIO42_DOWN is bidirectional, with an internal pulldown.
  - GPIO42_OUT is output-only, and needs no pullup or pulldown.

All of those would be fully functional through the standard GPIO
interface as well as the legacy OMAP-only one, except GPIO42_OUT
which won't let you read the actual pin value after setting it.

There's no special off-mode support for these particular pins;
on Beagle they have external pullups or pulldowns.

(OMAP2 can use this naming convention too, except that since it
has no input-enable the "_OUT" convention can't be used there.)
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>

Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

This patch enables the support for nand driver on 3430sdp
Signed-off-by: Teerth Reddy <teerth@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

This patch adds NAND support on 3430sdp board

[VS: updated for NAND_BLOCK_SIZE macros]
Signed-off-by: Teerth Reddy <teerth@ti.com>
Signed-off-by: Vimal Singh <vimal.singh@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

Add pin-mux settings for OHCI in PHY mode.
Also change settings for EHCI in TLL mode.
Signed-off-by: Anand Gadiyar <gadiyar@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

OMAP2/3 clock: fix CONFIG_OMAP_RESET_CLOCKS

plat-omap/clock.c was skipping clocks with enable_reg == 0.  This no longer
works now that we use enable_reg as an offset from a PRCM module.

Problem found and traced by Tero Kristo <tero.kristo@nokia.com> -
thanks Tero.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

Commit 81d2c7d8 broke
compilation of board-n800-mmc.c, this patch fixes it.

Still n810 doesn't boot anymore with current linux-omap.
Will look into that soon.
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

Make hdq_reg_out as void and remove suspend, resume from the driver structure.
Signed-off-by: Madhusudhan Chikkature <madhu.cr@ti.com>
Acked-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Acked-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

This patch fixes the indentation, commenting style of a single line comment.
Signed-off-by: Madhusudhan Chikkature <madhu.cr@ti.com>
Acked-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Acked-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

This patch moves the shared variable into the local structure and
protects its updation.
Signed-off-by: Madhusudhan Chikkature <madhu.cr@ti.com>
Acked-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Acked-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

This patch replaces the usage of semaphore by mutex.
Signed-off-by: Madhusudhan Chikkature <madhu.cr@ti.com>
Acked-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Acked-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

This patch provides the ioremap related changes to the driver.
Signed-off-by: Madhusudhan Chikkature <madhu.cr@ti.com>
Acked-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Acked-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

Convert declaration to static.
Signed-off-by: Madhusudhan Chikkature <madhu.cr@ti.com>
Acked-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Acked-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

Remove the unneeded "unlikely" calls.
Signed-off-by: Madhusudhan Chikkature <madhu.cr@ti.com>
Acked-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Acked-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

This patch fix the exit paths in the probe function.
Signed-off-by: Madhusudhan Chikkature <madhu.cr@ti.com>
Acked-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Acked-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

Replace pr_debug with dev_dbg with device information added for
debug prints.
Signed-off-by: Madhusudhan Chikkature <madhu.cr@ti.com>
Acked-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Acked-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

This patch provides the necessary modifications to the driver to
remove the global ptr hdq_data.
Signed-off-by: Madhusudhan Chikkature <madhu.cr@ti.com>
Acked-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
Acked-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

Drive OVERO_GPIO_BT_XGATE low rather than relying on the pin mux pull
down set by U-boot
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

commit bf9454a3 broke compilation
for ldp board. The following patch fixes it. Also fixes a wrong
cast from a void __iomem * to u32.
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

This increases VMALLOC_END to 0x18000000, making room for 256MB
RAM with the default 128MB vmalloc region.

Note that after this patch there's no longer a hole between vmalloc
space and the beginning of IO space on omap2 as the first virtual
mapping starts at 0xd8000000.
Signed-off-by: Mans Rullgard <mans@mansr.com>
Acked-by: Kevin Hilman <khilman@deeprootsystems.com>

Get rid of bogus ASOC boot messages on non-Overo boards,
such as with a kernel built for both Overo and Beagle.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-By: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

without it, otg_get/set_transceiver won't be useful and
twl4030-usb transceiver won't get to musb code.
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

Make twl4030 GPIO support the new gpio_to_irq() hook
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>

Make OMAP use the new __gpio_to_irq() hook, to make it easier to
support IRQs coming in from off-chip gpio controllers like the
TWL4030/TPS65930 chip used on OMAP3 boads like Beagleboard.org and
the Gumstix Overo.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>

Add a new gpiolib mechanism:  gpio_chip instances can provide
mappings between their (input) GPIOs and any associated IRQs.
This makes it easier for platforms to support IRQs that are
provided by board-specific external chips instead of as part
of their core (such as SOC-integrated GPIOs).

Also update the irq_to_gpio() description, saying to avoid it
becuase it's not always supported.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>

A variety of twl4030-core cleanups:

 - SIH register declarations moved from core.c to twl4030.h, for
   keypad, madc, bci; this decouples from twl4030-madc.h; add
   several omitted register decls; remove a duplicate.

 - Use a global "inuse" flag, not a per-slave one;

 - Remove pointless SLAVENUM_NUM symbols; just use 0/1/2/3

 - Comments:
     * Add comments:  header, register values
     * Add some section delimiters
     * Correct clock init and other comments

 - Minor stuff:
     * Group some variables and code with sibling
     * Make clock init a bit simpler
     * List twl5030 in supported i2c chips list
     * Remove needless "return;"

And one IRQ-related bugfix:  if the I2C timeout bug strikes while
reading PIH interrupt status, force an immediate retry.  Otherwise
the twl4030 IRQ will never get re-enabled...

Object size shrinks by 180 bytes, w00t!
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>

Get rid of another needless TWL header file:  twl4030-pwrirq.h
can easily live in twl4030.h; updating its three users.

Also switch to the shared definition of the SIH_CTRL COR bit,
remove useless-to-non-driver MODULE_ALIAS(), and add a note
about a bug that will appear if anyone ever removes this code.

No functional changes, just shrinkage.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

Remove <linux/i2c/twl4030-rtc.h> by moving all the relevant contents
into the driver itself, and removing the rest.  Stuff removed included
many useless bitmasks, and remnants of the platform data hook.

Add markers inside the rtc driver to split sections apart:  first
data structure declarations, then the RTC driver, then platform bus
glue for it all.

There's still an issue with the twl4030-pwrirq.h registers ... this
driver has no business touching them!  This patch at least switches
away from having private versions of those register definitions, and
removes some unnecessary accesses to them.

No functional changes, just shrinkage.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

Portability fixes (simplifications) for rtc-twl4030:  don't include
so many needless headers, especially platform-specific ones.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>

make twl4030_usb transceiver reach musb.
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

When a non-CORE DPLL is enabled via omap3_noncore_dpll_enable(), use
the user's desired rate in clk->rate to determine whether to put the
DPLL into bypass or lock mode, rather than reading the DPLL's current
idle state from its hardware registers.

This fixes a bug observed when leaving retention. Non-CORE DPLLs were
not being relocked when downstream clocks re-enabled; rather, the DPLL
entered bypass mode.

Problem reported by Tero Kristo <tero.kristo@nokia.com>.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

Commit a63efb15 broke the dss1_alwon_fck
clock enable on 3430ES2+.  The clock code was not waiting for the module
to come out of idle.

Problem reported by Rajendra Nayak <rnayak@ti.com>.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

The <linux/i2c/...> directory has too many headers for twl4030
support.  Start simplifying that by moving twl430-gpio.h into
the main twl4030.h and also:

 - Providing comments to summarize the { module, offset } logical
   addressing vs the { i2c_client, register } physical addressing.

 - Moving the { module, offset } based I/O calls next to the place
   those modules are defined, with slightly improved descriptions.

 - Adding some section markers internal to twl4030.h so unrelated
   things can be visually separated.

 - Move TWL4030_GPIO_MAX adjacent to the other GPIO symbols.

 - Remove two more now-obsolete symbols (for GPIO pullup/pulldown).

 - Have global definitions of the three SIH_CTRL register bits,
   following the pattern of twl4030-core.c (and fixing a minor
   fault handling bug in reading the clear-on-read bit).

To keep things simple, the only blocks with register declarations
in this file should be ones with registers that (cleanly) get
shared between components ... modules with SIH registers (for
IRQ handling) being the obvious candidates.

No functional changes.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>

Move twl4030-core to drivers/mfd from drivers/i2c/chips,
along with its Kconfig and Makefile help.

The intent here is:  no functional change, match the patch
sent to LKML this morning (except, fix that spelling error
in the new Kconfig text).
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>

Merge branches 'master' and 'linus'

Conflicts:

	drivers/usb/musb/musb_core.c

Fix typo in omap_wdt.c introduced by a recent change
Signed-off-by: Anand Gadiyar <gadiyar@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

Signed-off-by: Tony Lindgren <tony@atomide.com>