Commit graph

293 commits

Author SHA1 Message Date
Linus Torvalds
63634c8636 Merge branch 'davinci-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-davinci
* 'davinci-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-davinci:
  davinci: fix compile warning: <mach/da8xx.h>: #include <linux/platform_device.h>
  davinci: DM365: fix duplicate default IRQ priorities
  davinci: edma: clear events in edma_start()
  davinci: da8xx/omap-l1: fix build error when CONFIG_DAVINCI_MUX is undefined
  davinci: timers: don't enable timer until clocksource is initialized
2010-04-07 11:03:06 -07:00
Sergei Shtylyov
75392dd304 davinci: fix compile warning: <mach/da8xx.h>: #include <linux/platform_device.h>
This hushes the following warning:

arch/arm/mach-davinci/include/mach/da8xx.h:104: warning: ‘struct platform_device’
declared inside parameter list
arch/arm/mach-davinci/include/mach/da8xx.h:104: warning: its scope is only this
definition or declaration, which is probably not what you want

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-04-07 09:51:58 -07:00
Kevin Hilman
c8e42de6ef davinci: DM365: fix duplicate default IRQ priorities
IRQ 29 has two possible interrupts DDRINT and RTC, but having both in
the default priority table is confusing (and triggers a warning from
sparse.)

This patch removes the lower priority DDRINT from the default priority
table leaving the RTC setting as the default.

Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-04-05 15:25:11 -07:00
Brian Niebuhr
bb17ef102b davinci: edma: clear events in edma_start()
This patch fixes an issue where a DMA channel can erroneously process an
event generated by a previous transfer.  A failure case is where DMA is
being used for SPI transmit and receive channels on OMAP L138.  In this
case there is a single bit that controls all event generation from the
SPI peripheral.  Therefore it is possible that between when edma_stop()
has been called for the transmit channel on a previous transfer and
edma_start() is called for the transmit channel on a subsequent transfer,
that a transmit event has been generated.

The fix is to clear events in edma_start().  This prevents false events
from being processed when events are enabled for that channel.

Signed-off-by: Brian Niebuhr <bniebuhr@efjohnson.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-04-05 15:25:11 -07:00
Sekhar Nori
5eb2e891f0 davinci: da8xx/omap-l1: fix build error when CONFIG_DAVINCI_MUX is undefined
The da8xx/omap-l1 boards refuse to build when CONFIG_DAVINCI_MUX is undefined
because arch/arm/mach-davinci/mux.c:da8xx_pinmux_setup() is not defined.

This patch fixes this issue. This is build tested with davinci_all_defconfig
and da8xx_omapl_defconfig and boot tested on DA830 EVM.

Reported-by: Shanmuga Sundaram Mahendran <shanmuga@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-04-05 15:25:11 -07:00
Kevin Hilman
d99c387114 davinci: timers: don't enable timer until clocksource is initialized
On da830, when the same timer is used for clocksource and clockevent,
the timer can be started before the clockevent is
registered/initialzed.  This creates a window where a timer
interrupt might fire before the clockevent handler has been
setup and causes a crash.

This patch moves the actual enable/start of the timer after
the clockevent has ben registered.

Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-04-05 15:25:11 -07:00
Tejun Heo
5a0e3ad6af include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files.  percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed.  Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability.  As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

  http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
  only the necessary includes are there.  ie. if only gfp is used,
  gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
  blocks and try to put the new include such that its order conforms
  to its surrounding.  It's put in the include block which contains
  core kernel includes, in the same order that the rest are ordered -
  alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
  doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
  because the file doesn't have fitting include block), it prints out
  an error message indicating which .h file needs to be added to the
  file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
   over 4000 files, deleting around 700 includes and adding ~480 gfp.h
   and ~3000 slab.h inclusions.  The script emitted errors for ~400
   files.

2. Each error was manually checked.  Some didn't need the inclusion,
   some needed manual addition while adding it to implementation .h or
   embedding .c file was more appropriate for others.  This step added
   inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
   from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
   e.g. lib/decompress_*.c used malloc/free() wrappers around slab
   APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
   editing them as sprinkling gfp.h and slab.h inclusions around .h
   files could easily lead to inclusion dependency hell.  Most gfp.h
   inclusion directives were ignored as stuff from gfp.h was usually
   wildly available and often used in preprocessor macros.  Each
   slab.h inclusion directive was examined and added manually as
   necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
   were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
   distributed build env didn't work with gcov compiles) and a few
   more options had to be turned off depending on archs to make things
   build (like ipr on powerpc/64 which failed due to missing writeq).

   * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
   * powerpc and powerpc64 SMP allmodconfig
   * sparc and sparc64 SMP allmodconfig
   * ia64 SMP allmodconfig
   * s390 SMP allmodconfig
   * alpha SMP allmodconfig
   * um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
   a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-30 22:02:32 +09:00
Jiri Kosina
318ae2edc3 Merge branch 'for-next' into for-linus
Conflicts:
	Documentation/filesystems/proc.txt
	arch/arm/mach-u300/include/mach/debug-macro.S
	drivers/net/qlge/qlge_ethtool.c
	drivers/net/qlge/qlge_main.c
	drivers/net/typhoon.c
2010-03-08 16:55:37 +01:00
Linus Torvalds
13dda80e48 Merge branch 'davinci-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-davinci
* 'davinci-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-davinci: (40 commits)
  DaVinci DM365: Adding support for SPI EEPROM
  DaVinci DM365: Adding DM365 SPI support
  DaVinci DM355: Modifications to DM355 SPI support
  DaVinci: SPI: Adding header file for SPI support.
  davinci: dm646x: CDCE clocks: davinci_clk converted to clk_lookup
  davinci: clkdev cleanup: remove clk_lookup wrapper, use clkdev_add_table()
  DaVinci: DM365: Voice codec support for the DM365 SoC
  davinci: clock: let clk->set_rate function sleep
  Add SDA and SCL pin numbers to i2c platform data
  davinci: da8xx/omap-l1xx: Add EDMA platform data for da850/omap-l138
  davinci: build list of unused EDMA events dynamically
  davinci: Fix edma_alloc_channel api for EDMA_CHANNEL_ANY case
  davinci: Keep count of channel controllers on a platform
  davinci: Correct return value of edma_alloc_channel api
  davinci: add CDCE949 support on DM6467 EVM
  davinci: add support for CDCE949 clock synthesizer
  davinci: da850/omap-l138 EVM: register for suspend support
  davinci: da850/omap-l138: add support for SoC suspend
  davinci: add power management support
  DaVinci: DM365: Changing default queue for DM365.
  ...
2010-03-01 13:05:40 -08:00
Sandeep Paulraj
5f19daa16f DaVinci DM365: Adding support for SPI EEPROM
The DM365 Spectrum Digital EVM comes with an EEPROM
connected to SPI0.
This patch adds support for the SPI EEPROM.

Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-03-01 10:20:24 -08:00
Sandeep Paulraj
a3e13e89d6 DaVinci DM365: Adding DM365 SPI support
This patch adds SPI init for DM365.
It does the following
1) Initializes SPI0
2) Defines resources to be used by SPI0
3) Adds platform data for SPI0

Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-03-01 10:20:24 -08:00
Sandeep Paulraj
15e865859a DaVinci DM355: Modifications to DM355 SPI support
This patch does the following

1) Minor change to the SPI clocks making it
similar to DM365.
2) Changing the interrupt used by SPI0
3) Adding EDMA resources that can be used by SPI0
4) Adding platform specific data.

Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-03-01 10:20:23 -08:00
Sandeep Paulraj
8e2a0013c2 DaVinci: SPI: Adding header file for SPI support.
This patch adds "spi.h" header file that will be used by board and
architecture specific code.

Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-03-01 10:20:22 -08:00
Kevin Hilman
c564191b1c davinci: dm646x: CDCE clocks: davinci_clk converted to clk_lookup
Remove unneeded 'struct davinci_clk' wrapper around 'struct
clk_lookup' and use clk_lookup directly.

Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-03-01 10:19:58 -08:00
Linus Torvalds
ac0f6f927d Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (100 commits)
  ARM: Eliminate decompressor -Dstatic= PIC hack
  ARM: 5958/1: ARM: U300: fix inverted clk round rate
  ARM: 5956/1: misplaced parentheses
  ARM: 5955/1: ep93xx: move timer defines into core.c and document
  ARM: 5954/1: ep93xx: move gpio interrupt support to gpio.c
  ARM: 5953/1: ep93xx: fix broken build of clock.c
  ARM: 5952/1: ARM: MM: Add ARM_L1_CACHE_SHIFT_6 for handle inside each ARCH Kconfig
  ARM: 5949/1: NUC900 add gpio virtual memory map
  ARM: 5948/1: Enable timer0 to time4 clock support for nuc910
  ARM: 5940/2: ARM: MMCI: remove custom DBG macro and printk
  ARM: make_coherent(): fix problems with highpte, part 2
  MM: Pass a PTE pointer to update_mmu_cache() rather than the PTE itself
  ARM: 5945/1: ep93xx: include correct irq.h in core.c
  ARM: 5933/1: amba-pl011: support hardware flow control
  ARM: 5930/1: Add PKMAP area description to memory.txt.
  ARM: 5929/1: Add checks to detect overlap of memory regions.
  ARM: 5928/1: Change type of VMALLOC_END to unsigned long.
  ARM: 5927/1: Make delimiters of DMA area globally visibly.
  ARM: 5926/1: Add "Virtual kernel memory..." printout.
  ARM: 5920/1: OMAP4: Enable L2 Cache
  ...

Fix up trivial conflict in arch/arm/mach-mx25/clock.c
2010-03-01 09:15:15 -08:00
Murali Karicheri
a30d6744cf V4L/DVB: DaVinci - Adding platform & board changes for vpfe capture on DM365
This patch adds following changes:-
	1) add sub device configuration data for TVP5146 used by vpfe capture
	2) registers platform devices for vpfe_capture, isif and vpss
	3) defines hardware resources for the devices listed under 2)
	4) defines clock aliase for isif driver
	5) adding setup_pinmux() for isif

Reviewed-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Murali Karicheri <mkaricheri@gmail.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-02-26 15:11:06 -03:00
Muralidharan Karicheri
77c8b5fb0e V4L/DVB: vpfe-capture: converting ccdc drivers to platform-drivers
This adds platform code for ccdc driver on DM355 and DM6446.

1) new ccdc platform devices added
2) added clock aliases master and slave for CCDC clocks
3) added dm355_ccdc_setup_pinmux() pin-mux setup hook in dm355 ccdc driver platform data

Reviewed-by: Vaibhav Hiremath <hvaibhav@ti.com>
Reviewed-by: Kevin Hilman <khilman@deeprootsystems.com>
Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Muralidharan Karicheri <m-karicheri2@ti.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-02-26 15:10:45 -03:00
Russell King
2741ecb4ce Merge branch 'misc2' into devel 2010-02-25 22:09:41 +00:00
Russell King
186f93ea1f Merge branch 'tmpreg' into devel
Conflicts:
	arch/arm/Kconfig
	arch/arm/mach-ux500/include/mach/debug-macro.S
2010-02-25 22:07:25 +00:00
Fenkart/Bostandzhyan
c931b4f655 ARM: 5928/1: Change type of VMALLOC_END to unsigned long.
Makes it consistent with VMALLOC_START

Tested-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Andreas Fenkart <andreas.fenkart@streamunlimited.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-02-15 21:40:33 +00:00
Russell King
31aa8fd6fd ARM: Add caller information to ioremap
This allows the procfs vmallocinfo file to show who created the ioremap
regions.  Note: __builtin_return_address(0) doesn't do what's expected
if its used in an inline function, so we leave __arm_ioremap callers
in such places alone.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-02-15 21:39:11 +00:00
Tony Lindgren
4e6d488af3 ARM: 5910/1: ARM: Add tmp register for addruart and loadsp
Otherwise more complicated uart configuration won't be possible.
We can use r1 for tmp register for both head.S and debug.S.

NOTE: This patch depends on another patch to add the the tmp register
into all debug-macro.S files. That can be done with:

$ sed -i -e "s/addruart,rx|addruart, rx/addruart, rx, tmp/"
	arch/arm/*/include/*/debug-macro.S

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-02-12 17:27:52 +00:00
Stefan Weil
947af29435 Fix spelling of 'platform' in comments and doc
Replace platfrom -> platform.

This is a frequent spelling bug.

Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2010-02-05 12:22:34 +01:00
Kevin Hilman
08aca087f2 davinci: clkdev cleanup: remove clk_lookup wrapper, use clkdev_add_table()
Remove unneeded 'struct davinci_clk' wrapper around 'struct clk_lookup'
and use clkdev_add_table() to add the list of clocks in one go.

Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-02-04 13:30:09 -08:00
Miguel Aguilar
e89861e9b4 DaVinci: DM365: Voice codec support for the DM365 SoC
This patch adds the generic Voice Codec support for the DM365 based
platforms.

Signed-off-by: Miguel Aguilar <miguel.aguilar@ridgerun.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-02-04 13:30:09 -08:00
Sekhar Nori
3b43cd6f2d davinci: clock: let clk->set_rate function sleep
When supporting I2C/SPI based on-board PLLs like CDCE949,
it is essential that clk->set_rate be able to sleep.

Currently, this is not possible because clk->set_rate is
called from within spin-lock in clk_set_rate

This patch brings clk->set_rate outside of the spin-lock
and lets the individual set_rate implementations achieve
serialization through appropiate means.

Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-02-04 13:30:08 -08:00
Philby John
00642f6616 Add SDA and SCL pin numbers to i2c platform data
Patch adds SDA and SCL pin numbers to the i2c platform data
structure for Davinci DM355 and DM6446. This at present is
used for i2c bus recovery.
TODO: Add SDA and SCL pin number information to include all
Davinci platforms such as dm355-leopard, dm365, dm646x, da8xx etc.

Signed-off-by: Philby John <pjohn@in.mvista.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-02-04 13:30:06 -08:00
Sudhakar Rajashekhara
3f995f2fd7 davinci: da8xx/omap-l1xx: Add EDMA platform data for da850/omap-l138
Currently da850/omap-l138 supports only one channel controller
instance of EDMA though EDMA driver as such supports multiple
channel controller instances. This patch adds platform data
for the 2nd EDMA channel controller. As, the platform data
differ between da830/omap-l137 and da850/omap-l138, existing
code has been re-shuffled to accommodate this.

Signed-off-by: Sudhakar Rajashekhara <sudhakar.raj@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-02-04 13:30:04 -08:00
Sudhakar Rajashekhara
f900d552f9 davinci: build list of unused EDMA events dynamically
Currently, the edma_noevent list is passed from platform data.
But on some architectures, there will be many EDMA channels
which will not be used at all. This patch scans all the
platform devices and then builds a list of events which are
not being used. The unused event list will be used to allocate
EDMA channels in case of EDMA_CHANNEL_ANY usage instead of the
edma_noevent being used earlier for this purpose.

This patch is based on David Brownells's suggestion at
http://article.gmane.org/gmane.linux.davinci/15176.

Signed-off-by: Sudhakar Rajashekhara <sudhakar.raj@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-02-04 13:30:02 -08:00
Sudhakar Rajashekhara
447f18f1b4 davinci: Fix edma_alloc_channel api for EDMA_CHANNEL_ANY case
Though edma_alloc_channel api was looping through the available
channel controllers in EDMA_CHANNEL_ANY case, it was never
returning the channel for 2nd channel controller, if 1st
channel controller had no free channels. This issue has
been fixed with this patch.

Signed-off-by: Sudhakar Rajashekhara <sudhakar.raj@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-02-04 13:30:01 -08:00
Sudhakar Rajashekhara
2d51750806 davinci: Keep count of channel controllers on a platform
Some architectures have only one channel controller, but the
edma_alloc_channel api loops twice to findout the free channel
available in EDMA_CHANNEL_ANY case. A new variable has been
introduced to keep count of number of channel controllers being
used on a particular architecture.

Signed-off-by: Sudhakar Rajashekhara <sudhakar.raj@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-02-04 13:30:00 -08:00
Sudhakar Rajashekhara
0e6cb8d296 davinci: Correct return value of edma_alloc_channel api
Currently, edma_alloc_channel api is returning the channel
number without prepending the controller on which the
channel was allocated. So, if a channel is allocated on
2nd controller, calls subsequent to edma_alloc_channel would
never know that channel was allocated on the 2nd controller,
and continue to operate on 1st controller, resulting in edma
failure. This patch fixes this issue.

Signed-off-by: Sudhakar Rajashekhara <sudhakar.raj@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-02-04 13:30:00 -08:00
Nageswari Srinivasan
77a92c710b davinci: add CDCE949 support on DM6467 EVM
This patch adds the CDCE949 reference oscillator to
the davinci clock list.

On the DM6467T EVM, the CDCE949 is responsible for
generating the pixel clock for display. On the DM6467
EVM, this pixel clock was being obtained from an
internal source. This is not possible on the DM6467T
EVM because of the presence of a 33MHz oscillator.

The TSIF module also requires the CDCE949 to generate
the data clocks.

The actual clock definitions will be added by patches
adding support for DM6467T VPIF and TSIF. This patch
mearly lays the foundation for that work.

Signed-off-by: Nageswari Srinivasan <nageswari@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-02-04 13:29:59 -08:00
Nageswari Srinivasan
5b8972d1b6 davinci: add support for CDCE949 clock synthesizer
This patch adds support for TI's CDCE949 - a clock
synthesizer with 4 PLLs and 9 outputs.

It is used on DM6467 EVM. On the EVM, it generates
clocks required for VPIF, TSIF and Audio modules.

This patch adds it as part of the DaVinci clock framework.

Testing:
The various frequency outputs on Y1 have been tested using
a out-of-tree VPIF video driver supporting HD video.
The register values for Y5 frequency outputs have been
derived from TSIF driver sources in MontaVista LSP kernel,
but actual output has not been tested for lack of TSIF
driver which actually works on the latest kernel.

Signed-off-by: Nageswari Srinivasan <nageswari@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-02-04 13:29:58 -08:00
Sekhar Nori
6353444363 davinci: da850/omap-l138 EVM: register for suspend support
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-02-04 13:29:57 -08:00
Sekhar Nori
044ca01521 davinci: da850/omap-l138: add support for SoC suspend
This patch adds support for registering for suspend-to-RAM
functionality on da850/omap-l138 SoCs.

da850 supports wakeup based on external event and RTC
alarm.

Currently only RTC alarm based wakeup is supported.
Support for wakeup based on external event will be
added as later improvements.

For scheduling an alarm event on RTC some useful code
is present in Documentation/rtc.txt

Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-02-04 13:29:56 -08:00
Sekhar Nori
efc1bb8a6f davinci: add power management support
This patch adds core power management (suspend-to-RAM)
support for DaVinci SoCs.

The code depends on the the "deepsleep" feature to suspend
the SoC and saves power by gating the input clock.

The wakeup can be based on an external event as supported
by the SoC.

Assembly code (in sleep.S) is added to aid gating DDR2
clocks. Code doing this work should not be accessing DDR2.
The assembly code is relocated to SRAM by the code in pm.c

The support has been validated on DA850/OMAP-L138 only
though the code is (hopefully) generic enough that other
SoCs supporting deepsleep feature simply requires SoC
specific code to start using this driver.

Note that all the device drivers don't support suspend/resume
still and are being worked on.

Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-02-04 13:29:55 -08:00
Sandeep Paulraj
7307d093e6 DaVinci: DM365: Changing default queue for DM365.
In DM365 Q0, Q1 and Q2 are used by codecs.
LSP drivers should use Q3.
This patch changes the default queue for DM365.

Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-02-04 13:29:54 -08:00
Chaithrika U S
679f9218ca davinci: clock: Check CLK_PSC flag before disabling PSC
Some modules do not have PSC to control their clocks.
The 'lpsc' field in the clk structure is 0 for such clocks.

In the clock disable function check for CLK PSC flag before
disabling the PSC. If this is not taken care of then it may
so happen that module controlled by LPSC 0 is erroneously disabled.

Signed-off-by: Chaithrika U S <chaithrika@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-02-04 13:29:53 -08:00
Sriramakrishnan
8ee2bf9ab7 TI Davinci EMAC : Re-use driver for other platforms.
The davinci EMAC peripheral is also available on other TI
platforms -notably TI AM3517 SoC. This patch modifies the
config option and the platform structure header files so that
the driver can be reused on non-davinci platforms as well.

Signed-off-by: Sriramakrishnan <srk@ti.com>
Acked-by: Chaithrika U S <chaithrika@ti.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-02-04 13:29:50 -08:00
Sudhakar Rajashekhara
fc42e335ee davinci: da850/omap-l138: Enable 4-bit ecc
This patch initializes the platform data to enable 4-bit
ecc support on DA850/OMAP-L138.

Signed-off-by: Sudhakar Rajashekhara <sudhakar.raj@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-02-04 13:29:49 -08:00
Sudhakar Rajashekhara
e2abd5a282 davinci: da850/omap-l138: Modify NOR partition info
On DA850/OMAP-L138, NOR flash partition was starting from offset
ZERO erasing the UBL and u-boot when the complete NOR is erased.
This patch moves the start of the partition to 512K, after the
bootloaders and u-boot env variables.

This patch also creates a new partition on NOR Flash to store
Linux kernel image.

Signed-off-by: Sudhakar Rajashekhara <sudhakar.raj@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-02-04 13:29:47 -08:00
Sekhar Nori
2f72e8dcc5 davinci: move /proc/davinci_clocks to debugfs
Move /proc/davinci_clocks to /sys/kernel/debug/davinci_clocks
(debugfs).

debugfs is more suited for this since the clock dump is
debug information.

Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-02-04 13:29:46 -08:00
Sekhar Nori
f979aa6e17 davinci: make /proc/davinci_clocks display multi-rooted clock tree
This patch modifies clock dump to take care of
clock tress rooted at multiple oscillators.
Current code assumes the entire tree is rooted
on a single oscillator. When using off-chip
clock synthesizers, some of the clocks can
be obtained from a different on-board oscillator.

Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-02-04 13:29:45 -08:00
Sekhar Nori
c1978e1dfb davinci: add support for DM6467T EVM
DM6467T (T for Turbo) is a newer and faster DM6467
part from TI. The new part supports 1080p video and
has the ARM running at 495MHz. More SoC information:

http://focus.ti.com/docs/prod/folders/print/tms320dm6467t.html

Spectrum Digital, Inc has a new EVM for this part.
It is _mostly_ same as the older DM6467 EVM except
for a 33MHz crystal input and THS8200 video encoder
for 1080p support.

The meat of this patch is dedicated to initializing
the crystal frequency from EVM board file.

Additional notes:
I did consider some alternative ways to make the crystal
input board specific including - (1) having board code
initialize the crystal frequency using the first member
of soc_info->cpu_clks array (2) introducing a new ref_clk_rate
member in soc_info structure.

But, the current way seems to be the simplest and least
intruding considering that both the clock array and SoC
info structure are actually private to the SoC file. Also
the fact that davinci_common_init() initializes both the
soc_info and clocks in one go.

Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-02-04 13:29:44 -08:00
Sekhar Nori
b73b526ec3 davinci: board-dm646x-evm.c: arrange related code together
Currently all the #defines and static variables in the
board-dm646x-evm.c file are located right at the start
of the file because of which the related code is not
together - making reading the code difficult.

This patch moves around the code keeping related code
together.

Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-02-04 13:29:42 -08:00
Sekhar Nori
5b5052e32d davinci: explain CLOCK_TICK_RATE of 27MHz in include/mach/timex.h
Leave a comment explaining the constant value of 27Mhz used
in include/mach/timex.h for all DaVinci platforms. Many of
the platforms actually run at 24MHz timer frequency (Eg.
EVMs of DM355, DM365 and OMAP-L1).

The comment also serves as a porting alert.

Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-02-04 13:29:41 -08:00
Sekhar Nori
60cd02e1f4 davinci: da850/omap-l138: create static map for SRAM
Create static map for internal SRAM and populate SRAM base
and size in soc_info structure to allow SRAM allocation
functions from arch/arm/mach-davinci/sram.c to work.

On DA850 SRAM is used for suspend-to-RAM implementation
in places where DDR2 cannot be accessed as its clocks are
stopped.

Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-02-04 13:29:40 -08:00
Sekhar Nori
7aad472bb5 davinci: da850/omap-l138: unlock PLL registers during init
On omap-l1 devices the PLL registers can be locked from
writes. Currently the cpufreq rate setting code unlocks
PLL0 before the write actually happens. With suspend
support getting added PLL1 registers need be be unlocked
as well.

To facilitate this, unlock both PLLs during the init time
itself.

This also obviates the need to unlock PLL registers for
each CPUFreq transtition.

Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-02-04 13:29:39 -08:00
Sekhar Nori
948c66df0d davinci: cpuidle: move mapping of DDR2 controller registers out of driver
When suspend is supported, both cpuidle and suspend code
need to work on DDR2 registers. Instead of mapping the
DDR2 registers twice, do it once outside of cpuidle
driver and let cpuidle driver get the virtual base address
of DDR2 registers.

Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
2010-02-04 13:29:38 -08:00