Assign the platform resource structures according to the EVMs used.
Signed-off-by: Chaithrika U S <chaithrika@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

This patch seems to get me much more reliable performance using the
GPIO banked interrupts on dm355 for the dm9000 driver.

Changes include:

- init GPIO handling along with normal GPIO init
- mask the level-sensitive bank IRQ during handling
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

Fix two IRQ triggering bugs affecting GPIO IRQs:

 - Make sure enabling with IRQ_TYPE_NONE ("default, unspecified")
   isn't a NOP ... default to both edges, at least one must work.

 - As noted by Kevin Hilman, setting the irq trigger type for a
   banked gpio interrupt shouldn't enable irqs that are disabled.

Since GPIO IRQs haven't been used much yet, it's not clear these
bugs could have affected anything.  The few current users don't
seem to have been obviously suffering from these issues.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

Provide a generic SRAM allocator using genalloc, and vaguely
modeled after what AVR32 uses.  This builds on top of the
static CPU mapping set up in the previous patch, and returns
DMA mappings as requested (if possible).

Compared to its OMAP cousin, there's no current support for
(currently non-existent) DaVinci power management code running
in SRAM; and this has ways to deallocate, instead of being
allocate-only.

The initial user of this should probably be the audio code,
because EDMA from DDR is subject to various dropouts on at
least DM355 and DM6446 chips.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

Package on-chip SRAM.  It's always accessible from the ARM, so
set up a standardized virtual address mapping into a 128 KiB
area that's reserved for platform use.

In some cases (dm6467) the physical addresses used for EDMA are
not the same as the ones used by the ARM ... so record that info
separately in the SOC data, for chips (unlike the OMAP-L137)
where SRAM may be used with EDMA.

Other blocks of SRAM, such as the ETB buffer or DSP L1/L2 RAM,
may be unused/available on some system.  They are ignored here.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

Remove dm6446-specific SRAM allocator, as preparation for a
more generic replacement.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

As per commit 284901a9,
use DMA_BIT_MASK(n)
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

The offset for the compare register used by the davinci
time code are passed in via the cmp_off member of the
'davinci_timer_instance' structure.  Therefore, the
offset defined in time.c are not necessary.
Signed-off-by: Mark A. Greer <mgreer@mvista.com>

It seems that declarations of kmalloc/kfree are missed, explicitly
include it.
Signed-off-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

Fix the following bug, which was reported after a command line "reboot":

 WARNING: at kernel/lockdep.c:2280 lockdep_trace_alloc+0x40/0x50()
 Modules linked in:
 [<c002d910>] (unwind_backtrace+0x0/0xdc) from [<c003bba8>] (warn_slowpath+0x68/0x8c)
 [<c003bba8>] (warn_slowpath+0x68/0x8c) from [<c005ecf0>] (lockdep_trace_alloc+0x40/0x50)
 [<c005ecf0>] (lockdep_trace_alloc+0x40/0x50) from [<c0091e14>] (__kmalloc+0x58/0x110)
 [<c0091e14>] (__kmalloc+0x58/0x110) from [<c0165044>] (kvasprintf+0x38/0x58)
 [<c0165044>] (kvasprintf+0x38/0x58) from [<c015e794>] (kobject_set_name_vargs+0x14/0x54)
 [<c015e794>] (kobject_set_name_vargs+0x14/0x54) from [<c019b9ac>] (dev_set_name+0x20/0x2c)
 [<c019b9ac>] (dev_set_name+0x20/0x2c) from [<c0031804>] (davinci_watchdog_reset+0x1c/0xb0)
 [<c0031804>] (davinci_watchdog_reset+0x1c/0xb0) from [<c0029304>] (arm_machine_restart+0x24/0x50)
 [<c0029304>] (arm_machine_restart+0x24/0x50) from [<c0028d84>] (machine_restart+0x18/0x20)
 [<c0028d84>] (machine_restart+0x18/0x20) from [<c004ba80>] (sys_reboot+0xe0/0x1c4)
 [<c004ba80>] (sys_reboot+0xe0/0x1c4) from [<c0027d40>] (ret_fast_syscall+0x0/0x2c)

The issue is that dev_set_name() may no longer be called with IRQs disabled.
Trivial fix:  don't cons up a fake watchdog device, just use the real one.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

Use network device ops interface.
Tested on TI DM646x adn DM644x EVMs.
Signed-off-by: Chaithrika U S <chaithrika@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

Fix for phy_disconnect bug

Disconnect the phy device only if there is a PHY connected.
If the phy_mask is zero, the phydev pointer is null, therefore
check the phydevice before disconnection.
Signed-off-by: Chaithrika U S <chaithrika@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

Different SoC have different numbers of pinmux registers and other
resources that overlap with each other.  To clean up the code and
eliminate defines that overlap with each other, move the PINMUX
defines to the SoC specific files.
Signed-off-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

The Timer64p timer has 8 compare registers that can
be used to generate interrupts when the timer value
matches the compare reg's value.  They do not disturb
the timer itself.  This can be useful when there is
only one timer available for both clock events and
clocksource.

When enabled, the clocksource remains a continuous
32-bit counter but the clock event will no longer
support periodic interrupts.  Instead only oneshot
timers will be supported and implemented by setting
the compare register to the current timer value plus
the period that the clock event subsystem is requesting.

Compare registers support is enabled automatically
when the following conditions are met:
1) The same timer is being used for clock events
   and clocksource.
2) The timer is the bottom half (32 bits) of the
   64-bit timer (hardware limitation).
3) The the compare register offset and irq are
   not zero.

Since the timer is always running, there is a hardware
race in timer32_config() between reading the current
timer value, and adding the period to the current
timer value and writing the compare register.
Testing on a da830 evm board with the timer clocked
at 24 MHz and the processor clocked at 300 MHz,
showed the number of counter ticks to do this ranged
from 20-53 (~1-2.2 usecs) but usually around 41 ticks.
This includes some artifacts from collecting the
information.  So, the minimum period should be
at least 5 usecs to be safe.

There is also an non-critical lower limit that
the period should be since there is no point in
setting an event that is much shorter than the
time it takes to set the event, and get & handle
the timer interrupt for that event.  There can
also be all sorts of delays from activities
occuring elsewhere in the system (including
hardware activitis like cache & TLB management).
These are virtually impossible to quantify so a
minimum period of 50 usecs was chosen.  That will
certianly be enough to avoid the actual hardware
race but hopefully not large enough to cause
unreasonably course-grained timers.
Signed-off-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

Integrate the Common Platform Interrupt Controller (cp_intc)
support into the low-level irq handling for davinci and similar
platforms.  Do it such that support for cp_intc and the original
aintc can coexist in the same kernel binary.
Signed-off-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

Factor out the code to extract that mac address from
i2c eeprom.
Signed-off-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

The dm644x and dm646x board files have i2c eeprom read and
write routines but they are not used so remove them.
Signed-off-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

Since most of the emac platform_data is really SoC specific
and not board specific, move it to the SoC-specific files.
Put a pointer to the platform_data in the soc_info structure
so the board-specific code can set some of the platform_data
if it needs to.
Signed-off-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

Currently, there is one set of platform_device and platform_data
structures for all DaVinci SoCs.  The differences in the data
between the various SoCs is handled by davinci_serial_init()
by checking the SoC type.  However, as new SoCs appear, this
routine will become more & more cluttered.

To clean up the routine and make it easier to add support for new
SoCs, move the platform_device and platform_data structures into the
SoC-specific code and use the SoC infrastructure to provide access
to the data.

In the process, fix a bug where the wrong irq is used for uart2
of the dm646x.
Signed-off-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

The current gpio code needs to know the number of
gpio irqs there are and what the bank irq number is.
To determine those values, it checks the SoC type.

It also assumes that the base address and the number
of irqs the interrupt controller uses is fixed.

To clean up the SoC checks and make it support
different base addresses and interrupt controllers,
have the SoC-specific code set those values in
the soc_info structure and have the gpio code
reference them there.
Signed-off-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

The watchdog code currently hardcodes the base address
of the timer its using.  To support new SoCs, make it
support timers at any address.  Use the soc_info structure
to do this.
Signed-off-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

The davinci timer code currently hardcodes the timer register
base addresses, the timer irq numbers, and the timers to use
for clock events and clocksource.  This won't work for some
a new SoC so put those values into the soc_info structure
and set them up in the SoC-specific files.
Signed-off-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

Use the SoC infrastructure to hold the interrupt controller
information (i.e., base address, default priorities,
interrupt controller type, and the number of IRQs).

The interrupt controller base, although initially put
in the soc_info structure's intc_base field, is eventually
put in the global 'davinci_intc_base' so the low-level
interrupt code can access it without a dereference.

These changes enable the SoC default irq priorities to be
put in the SoC-specific files, and the interrupt controller
to be at any base address.
Signed-off-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

The pinmux register base and setup can be different for different
SoCs so move the pinmux reg base, pinmux table (and its size) to
the SoC infrastructure.
Signed-off-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

The current code to support the DaVinci Power and Sleep Controller (PSC)
assumes that there is only one controller.  This assumption is no longer
valid so expand the support to allow greater than one PSC.

To accomplish this, put the base addresses for the PSCs in the SoC
infrastructure so it can be referenced by the PSC code.  This also
requires adding an extra parameter to davinci_psc_config() to specify
the PSC that is to be enabled/disabled.
Signed-off-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

All of the davinci SoCs need to call davinci_clk_init() so
put the call in the common init routine.
Signed-off-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

The Davinci cpu_is_davinci_*() macros use the SoC part number
and variant retrieved from the JTAG ID register to determine the
type of cpu that the kernel is running on.  Currently, the code to
read the JTAG ID register assumes that the register is always at
the same base address.  This isn't true on some newer SoCs.

To solve this, have the SoC-specific code set the JTAG ID register
base address in soc_info structure and add a 'cpu_id' member to it.
'cpu_id' will be used by the cpu_is_davinci_*() macros to match
the cpu id.  Also move the info used to identify the cpu type into
the SoC-specific code to keep all SoC-specific code together.

The common code will read the JTAG ID register, search through
an array of davinci_id structures to identify the cpu type.
Once identified, it will set the 'cpu_id' member of the soc_info
structure to the proper value and the cpu_is_davinci_*() macros
will now work.
Signed-off-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

Create a structure to encapsulate SoC-specific information.
This will assist in generalizing code so it can be used by
different SoCs that have similar hardware but with minor
differences such as having a different base address.

The idea is that the code for each SoC fills out a structure
with the correct information.  The board-specific code then
calls the SoC init routine which in turn will call a common
init routine that makes a copy of the structure, maps in I/O
regions, etc.

After initialization, code can get a pointer to the structure
by calling davinci_get_soc_info().  Eventually, the common
init routine will make a copy of all of the data pointed to
by the structure so the original data can be made __init_data.
That way the data for SoC's that aren't being used won't consume
memory for the entire life of the kernel.

The structure will be extended in subsequent patches but
initially, it holds the map_desc structure for any I/O
regions the SoC/board wants statically mapped.
Signed-off-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

Fix EMAC driver build errors for 2.6.30-rc2 staging branch

The member 'bus_id'  no longer exists in the device structure,
instead use dev_name() function. Also, replace netif_rx_schedule()
and netif_rx_complete() with napi_schedule() and napi_complete()
respectively.

Tested on TI DM644x and DM646x EVMs.
Signed-off-by: Chaithrika U S <chaithrika@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

Conflicts:
	arch/arm/mach-davinci/board-evm.c
	arch/arm/mach-davinci/include/mach/nand.h
	drivers/ide/palm_bk3710.c
	drivers/media/video/Makefile
	drivers/misc/eeprom/at24.c
	drivers/misc/eeprom/at25.c
	drivers/mmc/host/Kconfig
	drivers/mmc/host/Makefile
	drivers/mtd/nand/Kconfig
	drivers/mtd/nand/Makefile
	drivers/mtd/nand/davinci_nand.c
	drivers/usb/musb/davinci.c
	drivers/video/Makefile
	drivers/watchdog/davinci_wdt.c
	include/linux/memory.h
	sound/soc/davinci/davinci-evm.c
	sound/soc/davinci/davinci-sffsdr.c

Move the creation of a random ethernet address from devices.c
into davinci_emac.c. This allows me to delete the davinci_emac_init
function and directly call the dmxxx specific function from the
board file.
Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>

This reverts commit 1420b5d7.

Use the same mac order in emac_set_type0addr as in
emac_set_type1addr. The byte order was reversed.
Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

Signed-off-by: Stijn Devriendt <HIGHGuY@gmail.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

The scatterlist traversal is made proper. The patch has some minor comments
modification and also sets the value written to the DAVINCI_MMCTOR register
properly. The timeout calculation is made proper by deriving it from the
clock values.

This patch incorporates most of review comments given on LKLM by
Pierre Ossman.
Signed-off-by: Vipin Bhandari <vipin.bhandari@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

Currently the auto generated file mach-types.h is checking for
MACH_DAVINCI_DM6467_EVM, while it is configured as
MACH_DAVINCI_DM646X_EVM in the Kconfigs and defconfigs.
So machine_is_davinci_dm6467_evm() always returns FALSE.
Signed-off-by: Naresh Medisetty <naresh@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

Update NAND partitioning for the dm6446 evm, unmasking the hidden
data at the beginning and letting the kernel be updated from Linux.

 - This is boot-compatible with TI's software (U-Boot 1.20 and both
   the 2.6.10 and 2.6.18 kernels), in terms of startup and loading
   kernels from flash.

 - In the same way, it's also boot-compatible with mainline U-Boot,
   which stores U-Boot params in block 0 not block 16.

 - It's not quite compatible with systems that previously used NAND
   partitions to hold (filesystem) data.  The compatibilities are a
   bit different based on which kernel was used previously
     + Users of TI/MV kernels no longer see mtd2 "params"
       (mainline u-boot env is in a different place)
	* Filesystem is now mtd2 ... vs mtd3
     + Users of GIT kernels now see mtd0 and mtd1 partitions
	* Filesystem partition starts 640 KBytes earlier
	* Filesystem is now mtd2 ... vs mtd0
     * Linux now *uses* the flash-resident BBT
	* Removes annoying slowdown/hiccup during boot
	* Potentially ~64KB less space available with TI/MV kernels

If you *used* NAND partitions from Linux, there is no solution that's
fully compatible with all previous kernels in those respects ... ergo
this "best compromise".  It'd be good to back back up the filesystem
data; or, carry your own backwards-compatibility patch for awhile.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>