Omap DMA controller can prefetch data in advance in case of
destination synchronized data transfer. This may increase
performance when target HW block doesn't have fifo.
Data is waiting for transfer request in DMA fifo instead of read from memory.
Signed-off-by: NSamu Onkalo <samu.p.onkalo@nokia.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Fix GPIO numbers and smc91x for 2430sdp. The earlier code
had cut and paste errors from 3430sdp code. Also, 2430
has five GPIO banks for a total of 160 GPIO lines.
Signed-off-by: NTony Lindgren <tony@atomide.com>

This change adds in the necessary clocks and mux pins for UART
control on omap7xx devices.  I also made a change in the serial
code to only try and initialize two UARTs in omap_serial_init, as
these devices don't have three.
Signed-off-by: NCory Maccarrone <darkstar6262@gmail.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Recent DEBUG_LL and uncompress.h changes removed the check_port()
as pointed out by Cory Maccarrone <darkstar6262@gmail.com>.

This causes some boards to not boot, so add back the MDR1 register
check. The MDR1 register tells the mode of omap uart. Based on
an earlier patch by Cory Maccarrone <darkstar6262@gmail.com>.
Tested-by: NCory Maccarrone <darkstar6262@gmail.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

The addition of the new debounce code (commit
168ef3d9) broke the auto-disable of
debounce clocks on idle by forgetting to update the debounce clock
enable mask.

Add back the updating of bank->dbck_enable_mask so debounce clocks are
auto-disabled.
Signed-off-by: NKevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

The kernel timer queue is being run currently from a GP timer running in a one
shot mode, which works in a way that when it expires, it will also stop.
Usually during this situation, the interrupt handler will ack the interrupt,
load a new value to the timer and start it again. During suspend, the
situation is slightly different, as we disable interrupts just before
timekeeping is suspended, which leaves a small window where the timer can
expire before it is stopped, and will leave the interrupt flag pending.
This pending interrupt will prevent ARM sleep entry, thus now we ack it always
when we are attempting to stop a timer.
Signed-off-by: NTero Kristo <tero.kristo@nokia.com>
Acked-by: NKevin Hilman <khilman@deeprootsystems.com>
[tony@atomide.com: removed the ifdef to make the patch cover omap1 also]
Signed-off-by: NTony Lindgren <tony@atomide.com>

The memory allocated for sgt structure is not freed on error
when sg_alloc_table is called in sgtable_alloc().
Signed-off-by: NSatish Kumar <x0124230@ti.com>
Signed-off-by: NManjunatha GK <manjugk@ti.com>
Cc: Vimal Singh <vimal.newwork@gmail.com>
Signed-off-by: NHiroshi DOYU <Hiroshi.DOYU@nokia.com>
Signed-off-by: NTony Lindgen <tony@atomide.com>

Nobody uses that anymore, so remove and expect drivers to use the gpiolib
implementation.
Signed-off-by: NFelipe Balbi <felipe.balbi@nokia.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: David Brownell <david-b@pacbell.net>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

OMAP supports debouncing of gpio lines, implement the method using
gpiolib.
Signed-off-by: NFelipe Balbi <felipe.balbi@nokia.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: David Brownell <david-b@pacbell.net>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Add platform init code for the OMAP3 OHCI driver.

Also, configure padconf settings for OMAP3 depending
on which port mode is used.
Signed-off-by: NAnand Gadiyar <gadiyar@ti.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

EXTVBUS programming is required by OMAP3EVM REV >=E to supply 500mA
power so adding a flag which can be used by musb driver to program
EXTVBUS.
Signed-off-by: NAjay Kumar Gupta <ajay.gupta@ti.com>
Signed-off-by: NFelipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Add support for i2c init for omap4.

This patch is based on and earlier patch by
Santosh Shilimkar <santosh.shilimkar@ti.com>.
Signed-off-by: NTony Lindgren <tony@atomide.com>

Add separate omap_i2c_add_bus functions for mach-omap1
and mach-omap2. Make the mach-omap2 init set the interrupt
dynamically to support.

This is needed to add support for omap4 in a way that
works with multi-omap builds. This will eventually get
fixed in a generic way with the omap hwmods.
Signed-off-by: NTony Lindgren <tony@atomide.com>

Add some missing credits for people who have contributed significant features
or fixes.
Signed-off-by: NPaul Walmsley <paul@pwsan.com>
Cc: Benoît Cousson <b-cousson@ti.com>
Cc: Tero Kristo <tero.kristo@nokia.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Cc: Thara Gopinath <thara@ti.com>

Some powerdomains in OMAP4 support a direct transition from one sleep
state to another deeper sleep state without having to wakeup the
powerdomain. This patch adds an api in the powerdomain framework to
set the LOWPOWERSTATECHANGE bit in PWRSTCTRL register.
Signed-off-by: NRajendra Nayak <rnayak@ti.com>
Signed-off-by: NPaul Walmsley <paul@pwsan.com>

The pwrsts flag for ALWAYS ON domains like always_on_core_pwrdm
and wkup_pwrdm is wrongly populated with the define for a
powerdomain power state, instead of the allowable state
bitfields.
This causes a few api's to fail sensing invalid pwrst
requested.
Signed-off-by: NRajendra Nayak <rnayak@ti.com>
Signed-off-by: NPaul Walmsley <paul@pwsan.com>

The clock sources for timers on OMAP4 (system clock and 32k
clock) have their names wronly populated.
This patch fixes them so the omap_dm_timer_set_source
does not fail anymore.
Signed-off-by: NRajendra Nayak <rnayak@ti.com>
Signed-off-by: NPaul Walmsley <paul@pwsan.com>

Remove the hack put in place while clock framework was still not in
place for OMAP4.
Signed-off-by: NRajendra Nayak <rnayak@ti.com>
Signed-off-by: NPaul Walmsley <paul@pwsan.com>

The MPU subsystem was named based on internal code name (CHIRON).
This patch will remove all the occurences of the chiron name
are replace it with PRCM_MPU in order to differentiate
the MPU local PRCM to the global one.

Remove PDA_ from PRCM_MPU registers names to stick to the global
PRM naming convention.
Signed-off-by: NBenoit Cousson <b-cousson@ti.com>
Signed-off-by: NPaul Walmsley <paul@pwsan.com>
Cc: Rajendra Nayak <rnayak@ti.com>

Some initiator modules in OMAP2 & 3 does not have IDLEST bit,
in that case we cannot detect the module readiness by
polling that bit and must exist the function immediately
assuming that the module is ready.

The previous flag was affected to the OCP interface. While it is
technically true that the idlest is related to the L4 slave
interface of the module, the PRCM status belong to the module.
Signed-off-by: NBenoit Cousson <b-cousson@ti.com>
Signed-off-by: NPaul Walmsley <paul@pwsan.com>

Accessing the clkctrl register using offset of module & device is hard
to do in OMAP4 due to the way the CM1, CM2, PRM and PRCM_MPU are located
in the address space. There is no common base address anymore for all the
CM registers.
The easiest way to handle that on OMAP4 is to provide the absolute address
of the XXX_CLKCTRL register per hwmod.
Signed-off-by: NBenoit Cousson <b-cousson@ti.com>
Signed-off-by: NPaul Walmsley <paul@pwsan.com>
Cc: Rajendra Nayak <rnayak@ti.com>

Clean up comment style, remove unnecessary includes, and resolve some
checkpatch warnings in plat-omap/clock.c.
Signed-off-by: NPaul Walmsley <paul@pwsan.com>

Rename the RATE_IN_343X clksel_rate.rate flag to be RATE_IN_3XXX, to reflect
that these rates are valid on all OMAP3 platforms, not just 343X.

Also rename the RATE_IN_OMAP3430ES2 clksel_rate.rate flag to be
RATE_IN_OMAP3430ES2PLUS, to reflect that these flags are valid on all
OMAP3 platforms after 3430ES2.

This patch should not result in any functional changes.
Signed-off-by: NPaul Walmsley <paul@pwsan.com>
Cc: Richard Woodruff <r-woodruff2@ti.com>
Cc: Rajendra Nayak <rnayak@ti.com>
Cc: Ranjith Lohithakshan <ranjithl@ti.com>

The DEFAULT_RATE clksel_rate flag is essentially useless.  It was set
on some of the lowest divisors, which, when switching to a much
higher-rate parent, could have potentially resulted in rates that
exceeded the hardware specifications for downstream clocks in the
window between the clk_set_parent(), and a subsequent clk_set_rate().
It seems much safer to just remove the flag and always use the highest
available divisor (resulting in the lowest possible rate) after the
switch, and this patch does so.

Ideally, it would be best to first attempt to switch to a divisor that
matches the clock's rate with the previous parent, if at all possible.
But that is a project for some other day or some other person.  The
parent changing code is rarely used.
Signed-off-by: NPaul Walmsley <paul@pwsan.com>

In OMAP4, MMC1 PBIAS and its associated IO is software-controlled
by CONTROL_PBIAS and CONTROL_MMC1 registers. This patch adds PBIAS
configuration for MMC1 Controller during power-ON and power-OFF
of regulator.
Signed-off-by: NKishore Kadiyala <kishore.kadiyala@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Access to some of the OMAP4 GPIO registers are not properly handled.
This patch fixes it.

This patch is tested on 3430SDP and 4430SDP boards
Signed-off-by: NCharulatha V <charu@ti.com>
Acked-by: NKevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

This patch moves OMAP4 soc specific code from 4430sdp board file.
The change is necessary so that newer board support can be added
with minimal changes. This will be also problematic for
multi-board, multi-omap builds.
Signed-off-by: NSantosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

AM3517 don't have the register OMAP343X_CONTROL_PBIAS_LITE and the regulators
like "vmmc", so we set a noop "set_power" function for it.
Signed-off-by: NStanley.Miao <stanley.miao@windriver.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Multi line comments are fixed as per CodingStyle
guidelines.

Cc: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: NManjunatha GK <manjugk@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

If we are softbooting another kernel using kexec, DMA controller state is not
known when we are performing omap_init_dma(). It is possible that some DMA
channels are already active. For example after kexec we get:

<4>IRQ 0020 for non-allocated DMAchannel 5
<4>IRQ 0020 for non-allocated DMAchannel 5
<4>IRQ 0020 for non-allocated DMAchannel 5
<4>IRQ 0020 for non-allocated DMAchannel 5
<4>IRQ 0020 for non-allocated DMAchannel 5

To prevent any weird things happening, we disable all channel interrupts during
init.
Signed-off-by: NMika Westerberg <ext-mika.1.westerberg@nokia.com>
Acked-by: NKevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

While waiting for completion of the i2c transfer, the
MPU could hit OFF mode and cause several msecs of
delay that made i2c transfers fail more often. The
extra delays and subsequent re-trys cause i2c clocks
to be active more often. This has also an negative
effect on power consumption.

Created a mechanism for passing and using the
constraint setting function in driver code. The used
mpu wake up latency constraints are now set individually
per bus, and they are calculated based on clock rate
and fifo size.

Thanks to Jarkko Nikula, Moiz Sonasath, Paul Walmsley,
and Nishanth Menon for tuning out the details of
this patch.

Updates by Kevin as requested by Tony:

- Remove omap_set_i2c_constraint_func() in favor of conditionally
  adding the flag in omap_i2c_add_bus() in order to keep all the OMAP
  conditional checking in a single location.
- Update set_mpu_wkup_lat prototypes to match OMAP PM layer so
  OMAP PM function can be used directly in pdata.

Cc: Moiz Sonasath <m-sonasath@ti.com>
Cc: Jarkko Nikula <jhnikula@gmail.com>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Nishanth Menon <nm@ti.com>
Signed-off-by: NKalle Jokiniemi <kalle.jokiniemi@digia.com>
Signed-off-by: NKevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

McBSP module in OMAP4 needs to be able to set its tx/rx threshold
and enable the transmitter/receiver when starting an audio stream.
Signed-off-by: NJorge Eduardo Candelaria <jorge.candelaria@ti.com>
Signed-off-by: NMargarita Olaya Cabrera <magi.olaya@ti.com>
Acked-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NLiam Girdwood <lrg@slimlogic.co.uk>

In OMAP4, there is only one irq line for TX and RX paths. Use
the correct irq line to avoid errors at runtime.

Also, request irq line only once (instead of requesting for TX
and RX).
Signed-off-by: NJorge Eduardo Candelaria <jorge.candelaria@ti.com>
Acked-by: NJarkko Nikula <jhnikula@gmail.com>
Acked-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NLiam Girdwood <lrg@slimlogic.co.uk>

This rejects unaligned device virtual address('da') and physical
address('pa') and informs error to caller when a page table entry is
set. Otherwise, a wrong address can be used by IO device.
Signed-off-by: NHiroshi DOYU <Hiroshi.DOYU@nokia.com>
Cc: Hari Kanigeri <h-kanigeri2@ti.com>

Searching avaialable spaces should be stopped as soon as it turns out
that there's no possibility with the rest of it.
Signed-off-by: NHiroshi DOYU <Hiroshi.DOYU@nokia.com>

Inserting a gap page between IOVMAs could detect an override on other
IOVMA with iommu fault. This was originally suggested by Sakari Ailus
and based on the work and comment by David Cohen.
Signed-off-by: NHiroshi DOYU <Hiroshi.DOYU@nokia.com>
Cc: David Cohen <david.cohen@nokia.com>
Cc: Sakari Ailus <Sakari.Ailus@nokia.com>

This CONFIG_OMAP_IOMMU_DEBUG option cannot be selected because it's
not visible on menu. Make this option selectable.
Signed-off-by: NHiroshi DOYU <Hiroshi.DOYU@nokia.com>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

There are some places to scan iotlb entries. This iteration macro
could make these code a bit simpler with proceeding iotlb entries
transparently.
Signed-off-by: NHiroshi DOYU <Hiroshi.DOYU@nokia.com>
Tested-by: NHari Kanigeri <h-kanigeri2@ti.com>

This patch adds TLB preservation support to IOMMU module
Signed-off-by: NHari Kanigeri <h-kanigeri2@ti.com>
Signed-off-by: NHiroshi DOYU <Hiroshi.DOYU@nokia.com>

This patch provides the iommu support for OMAP4 co-processors.
Signed-off-by: NHari Kanigeri <h-kanigeri2@ti.com>
Signed-off-by: NHiroshi DOYU <Hiroshi.DOYU@nokia.com>