The sleep indicator LEDs can be enabled/disabled by toggling GPIO162.
Use the LED GPIO class to export this LED functionality to userspace.

To enable:

  # echo 1 > /sys/class/leds/sleep_ind/brightness

To disable:

  # echo 0 > /sys/class/leds/sleep_ind/brightness
Signed-off-by: NKevin Hilman <khilman@deeprootsystems.com>

Different boards benefit differently from the available
seven C-states for cpu idle. In most cases, only few,
properly spaced (in terms of consumption and latency)
C-states are required to make the power management
optimal. Hence we need a possibility to pass which
C-states are actually used for each board.

So added the valid field to cpuidle_params and added
support to 3430sdp, which uses the paramenter passing.
Signed-off-by: NKalle Jokiniemi <kalle.jokiniemi@digia.com>
Signed-off-by: NKevin Hilman <khilman@deeprootsystems.com>

The CPUidle C state latencies and thresholds are dependent on various
board specific details.  This patch makes it possible to configure
these values from the respective board files.

omap3_pm_init_cpuidle() can now be optionally called from board files
to pass board specific cpuidle parameters.  If the board files do not
use this function to pass the params default values are used which
might cause higher consumption dur to wrong state selection by the
governor.

This patch only updates the 3430sdp board files to use
omap3_pm_init_cpuidle().

From Kalle, in addition to original patch from Rajendra:

Building without CONFIG_CPU_IDLE or CONFIG_PM causes build to fail if
cpu idle parameters are tried to pass using omap3_pm_init_cpuidle
function.
Signed-off-by: NRajendra Nayak <rnayak@ti.com>
Signed-off-by: NKalle Jokiniemi <kalle.jokiniemi@digia.com>
Signed-off-by: NKevin Hilman <khilman@deeprootsystems.com>

When 'enable_off_mode' is 0, the target power state for MPU
and CORE was locally changed to PWRDM_POWER_RET but, the
statistics are updated for idle state originally selected
by the governor.

This patch 'invalidates' the idle states that lead either of
MPU or Core to PWRDM_POWER_OFF state when 'enable_off_mode'
is '0'. The states are valid once 'enable_off_mode' is set
to '1'.

Added function next_valid_state() to check if current state
is valid; else get the next valid state. It is called from
omap3_enter_idle_bm().
Signed-off-by: NSanjeev Premi <premi@ti.com>
Signed-off-by: NKevin Hilman <khilman@deeprootsystems.com>

The check for a valid mux name should be performed regardless of whether
DEBUG_FS is enabled or not. Otherwise without DEBUG_FS, we get:

Unable to handle kernel NULL pointer dereference at virtual address 00000000
pgd = c0004000
[00000000] *pgd=00000000
Internal error: Oops: 5 [#1]
last sysfs file:
Modules linked in:
CPU: 0    Not tainted  (2.6.33-rc8 #10)
PC is at strcmp+0x18/0x40
LR is at omap_mux_init_signal+0x68/0x14c
...

This fixes the issue currently seen with boards not booting up
if DEBUG_FS is not enabled in defconfig.

Note that the earlier ifndef + ifdef now becomes simpler ifdef else:
If CONFIG_OMAP_MUX is selected, we use pin names. If it's not selected,
we only want the GPIO to mux register mapping.
Signed-off-by: NRanjith Lohithakshan <ranjithl@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Add platform device for McPDM interface in OMAP4 and register
its memory and irq resources.
Signed-off-by: NJorge Eduardo Candelaria <x0107209@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Define McPDM physical and L3 base address for OMAP4
Signed-off-by: NJorge Eduardo Candelaria <x0107209@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Support for McPDM IRQs in OMAP4
Signed-off-by: NJorge Eduardo Candelaria <x0107209@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

sdp4430_uart_config isn't used anywhere, so remove it.
Signed-off-by: NFelipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Signed-off-by: NVaibhav Hiremath <hvaibhav@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

AM3517/05 has few additional control module registers to control
the new IP's, like VPFE, USBOTG, CPGMAC.

This patch adds the bit defination for INTR_CLR and SW_RST control
register.
Signed-off-by: NVaibhav Hiremath <hvaibhav@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Add base address definations for new AM35xx IPSS modules, like
VPFE, USBOTG, CPGMAC.

Please note that the OMAP34xx IVA2 memory space is being used for
AM35xx IPSS modules.
Signed-off-by: NVaibhav Hiremath <hvaibhav@ti.com>
Signed-off-by: NSriramakrishnan <srk@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Changes for setting the padconf value for sys_nirq line which is
connected to T2 INTR1. This will fix the T2 keypad wakeup.
Signed-off-by: NLesly A M <x0080970@ti.com>
Signed-off-by: NTeerth Reddy <teerth@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Get rid of the ifdeffery in omap_mux_init by creating
omap_mux_init_package and omap_mux_init_signals functions.
Signed-off-by: NTony Lindgren <tony@atomide.com>

It is still possible to use the omap_hsmmc module
without the regulator framework.  Accordingly, ifdef
out regulator-specific functions.
Signed-off-by: NAdrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

EMMC can have two voltage supplies, Vcc and VccQ
which are implemented in the code as consumer
supplies vmmc and vmmc_aux.

If the regulator that supplies vmmc_aux is shared
with other consumers, then sending it to sleep
will disrupt those consumers.  However, the
TWL4030-family regulators may have OFF remapped
to SLEEP, in which case 'regulator_disable()'
will put the regulator to sleep only when all
consumers are disabled - which is the desired
behaviour.

This patch adds a platform data field to allow
that option.
Signed-off-by: NAdrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Stop using 'regulator_is_enabled()' and just pair enables
with disables so that the regulator reference counts can
work correctly.
Signed-off-by: NAdrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Disable timeouts are in msecs not jiffies.
Signed-off-by: NAdrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

An eMMC may be always powered on, so that the lowest
power saving state possible is sleeping. Add a field
to the platform data to indicate that.
Signed-off-by: NAdrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

It has been discovered that, when eMMC is powered off, current
will flow from OMAP eMMC data pull-ups to the eMMC voltage supply.
Configuring pads for OMAP off-mode does not help because eMMC is
powered off independently of OMAP off-mode.  Hence the pads are
now re-configured when eMMC is powered on or off.
Signed-off-by: NAdrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Call the PM context-loss count function, now that there
is a prototype for it.
Signed-off-by: NAdrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

hsmmc.[ch] no longer has any dependency on twl4030
and variable names should be renamed to reflect that.
Signed-off-by: NAdrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

mmc-twl4030.[ch] no longer has any dependency on twl4030
and should be renamed to reflect that.
Signed-off-by: NAdrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

This patch moves the setup code for GPIO's and Voltage
Regulators from the board file mmc-twl4030.c to the
driver omap_hsmmc.c.  PBIAS and other system control
configuration remains in the board file.

Moving GPIO code to the driver makes the board initialisation
code independent of when GPIO's are defined.  That makes the
board initialisation now entirely independent of its original
twl4030 roots.

Moving Voltage Regulator code to the driver allows for further
development of regulator support in the core MMC code.  It also
permits the MMC core to be compiled as a module, because the
board code no longer calls MMC core functions.
Signed-off-by: NAdrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

This patch adds support for flashes on 3430SDP boards. All three
NAND, NOR and OneNAND are supported. I have tested it on
3430SDP (ES2 and ES3.1).

This patch can be treated as an example to "how to utilize":
'gpmc-nand.c' and 'board-sdp-flash.c'.

Similar patches can be created for 2430sdp and 3630sdp or any other
similar board.
Signed-off-by: NVimal Singh <vimalsingh@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

This patch adds 'board-sdp-flash.c', which could be utilized
by boards similar to 3430SDP. (For ex: 2430sdp, 36030sdp).

This file does initialization for all three flash devices present
in SDP boards (NOR, NAND, OneNAND), by finding there 'cs' number
dynamically using switch setting information (S8: 1-4).
This also expects partition information from core board files (for
ex: board-3430sdp.c). Which allows to choose different default
partitions for different boards.

A new structure is created for this purpose: 'flash_partitions'
in 'mach/board-sdp.h'. This has two members:
1. struct mtd_partition *parts
2. int nr_parts

A board file is expected to fill this structure and pass it to
'sdp-flsash-init'. Partition information should be passed in
structure array of 'flash_partitions'. Partition information should
be passed in below sequence in array:
NOR
OneNAND
NAND
Signed-off-by: NVimal Singh <vimalsingh@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Introducing 'gpmc-nand.c' for GPMC specific NAND init.
For example: GPMC timing parameters and all.
This patch also migrates gpmc related calls from 'nand/omap2.c'
to 'gpmc-nand.c'.
Signed-off-by: NVimal Singh <vimalsingh@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

No logical code change

Fix coding style indentaion as per checkpatch.pl
Fix multi-line comment style reported by Nishanth Menon
Signed-off-by: NVikram Pandita <vikram.pandita@ti.com>
Cc: Nishanth Menon <nm@ti.com>
Acked-by: NKevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

trivial patch, no functional changes.
Signed-off-by: NFelipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Get rid of the following warnings:

arch/arm/mach-omap2/gpmc.c:550:30: warning: non-ANSI
function declaration of function 'omap3_gpmc_save_context'

arch/arm/mach-omap2/gpmc.c:581:33: warning: non-ANSI
function declaration of function 'omap3_gpmc_restore_context'
Signed-off-by: NFelipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Change %d to %ld to avoid the compile warning.
Signed-off-by: NFelipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

use ioremap and remove unused variable to get rid
of compile warnings.
Signed-off-by: NFelipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Change the way McBSP registers are updated: use cached values instead of
relying upon those read back from the device.

With this patch, I have finally managed to get rid of all random
playback/recording hangups on my OMAP1510 based Amstrad Delta hardware. Before
that, values read back from McBSP registers to be used for updating them
happened to be errornous.

From the hardware side, the issue appeared to be caused by a relatively high
power requirements of an external USB adapter connected to the board's printer
dedicated USB port.

I think there is one important point that makes this patch worth of applying,
apart from my hardware quality. With the current code, if it ever happens to
any machine, no matter if OMAP1510 or newer, to read incorrect value from a
McBSP register, this wrong value will get written back without any checking.
That can lead to hardware damage if, for example, an input pin is turned into
output as a result.

Applies on top of patch 3 from this series:
[PATCH v9 3/4] OMAP: McBSP: Introduce caching in register write operations

Tested on OMAP1510 based Amstrad Delta using linux-omap for-next, commit
fb7380d70e041e4b3892f6b19dff7efb609d15a4 (2.6.33-rc3+ dated 2010-01-11).
Compile-tested with omap_3430sdp_defconfig.
Signed-off-by: NJanusz Krzysztofik <jkrzyszt@tis.icnet.pl>
Acked-by: NPeter Ujfalusi <peter.ujfalusi@nokia.com>
Acked-by: NJarkko Nikula <jhnikula@gmail.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

Determine cache size required per McBSP port at init time, based on
processor type running on.

Allocate space for storing cached copies of McBSP register values at
port request.

Modify omap_msbcp_write() function to update the cache with every
register write operation.

Modify omap_mcbsp_read() to support reading from cache or hardware.

Update MCBSP_READ() macro for modified omap_mcbsp_read() function API.

Introduce a new macro that reads from the cache.

Tested on OMAP1510 based Amstrad Delta using linux-omap for-next, commit
fb7380d70e041e4b3892f6b19dff7efb609d15a4 (2.6.33-rc3+ dated 2010-01-11).
Compile-tested with: omap_perseus2_730_defconfig, omap_generic_1610_defconfig,
omap_generic_2420_defconfig, omap_2430sdp_defconfig, omap_3430sdp_defconfig,
omap_4430sdp_defconfig with CONFIG_OMAP_MCBSP=y selected.
Signed-off-by: NJanusz Krzysztofik <jkrzyszt@tis.icnet.pl>
Acked-by: NPeter Ujfalusi <peter.ujfalusi@nokia.com>
Acked-by: NJarkko Nikula <jhnikula@gmail.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

OMAP_MCBSP_READ()/_WRITE() macros and omap_mcbsp_read()/_write() functions
accept McBSP register base address as an argument. In order to support
caching, that must be replaced with an address of the omap_mcbsp structure
that would provide addresses for both register AND cache access.

Since OMAP_ prefix seems obvious in macro names, drop it off in order to
minimize line wrapping throughout the file.

Tested on OMAP1510 based Amstrad Delta using linux-omap for-next, commit
fb7380d70e041e4b3892f6b19dff7efb609d15a4 (2.6.33-rc3+ dated 2010-01-11).
Compile-tested with omap_3430sdp_defconfig.
Signed-off-by: NJanusz Krzysztofik <jkrzyszt@tis.icnet.pl>
Acked-by: NPeter Ujfalusi <peter.ujfalusi@nokia.com>
Acked-by: NJarkko Nikula <jhnikula@gmail.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

There are several places where readw()/writew() functions are used instead of
OMAP_MCBSP_READ()/WRITE() macros for manipulating McBSP registers. Replace
them with macros to ensure consistent behaviour after caching is introduced.

Tested on OMAP1510 based Amstrad Delta.
Compile-tested with omap_3430sdp_defconfig.
Signed-off-by: NJanusz Krzysztofik <jkrzyszt@tis.icnet.pl>
Acked-by: NPeter Ujfalusi <peter.ujfalusi@nokia.com>
Acked-by: NJarkko Nikula <jhnikula@gmail.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

There was a potential risk that the following "memset" could override
its range if a given address was not the 1st entry of a
largepage. This is not the case for "iovmm".
Reported-by: NHari Nagalla <hnagalla@ti.com>
Signed-off-by: NHiroshi DOYU <Hiroshi.DOYU@nokia.com>
Signed-off-by: NHari Nagalla <hnagalla@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

There was a potential risk that the following "memset" could override
its range if a given address was not the 1st entry of a
supersection. This is not the case for "iovmm".
Signed-off-by: NHiroshi DOYU <Hiroshi.DOYU@nokia.com>
Signed-off-by: NHari Nagalla <hnagalla@ti.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

This is just a cleanup, but adds a few macros here, which can be used
in the proceeding patches.
Signed-off-by: NHiroshi DOYU <Hiroshi.DOYU@nokia.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>