This is used to support suspend modes like RTC-only and hibernate where
the state of the registers controlling clockdomains is lost.
Signed-off-by: Russ Dill <Russ.Dill@ti.com>
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Signed-off-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Make these const as they are only getting passed to the functions
cm_register and cm_unregister having the arguments as const.
Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
In some cases the physical address info is needed, so store this
under the existing cm*_base, prm_base and prcm_mpu_base variables.
These are converted now to structs that contain both virtual and
physical address base for the instance.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Now that we have moved the check for valid clkctrl_offs to the caller of
am33xx_cm_wait_module_ready/idle and omap4_cminst_wait_module_ready/idle
let's remove the now redundant check for clkctrl_offs from these functions.
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Acked-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
If the module has no clkctrl register defined, module_wait_ready should
not try to access this. This can potentially cause an illegal register
access, and result in bad idle reporting also.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This gets rid of need for some exported driver APIs, and simplifies the
initialization of the CM driver. Done in preparation to make CM a
separate driver. The init data is now also passed to the SoC specific
implementations, allowing future expansion to add feature flags etc.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
There is no need to provide the CM base address through a low-level API
from the low-level IO init, as this information is available through DT.
Re-routed the parsing function to be called from the CM drivers also to
simplify the implementation under io.c.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Removes some functions that are not used anywhere:
am33xx_cm_read_reg_bits() am33xx_cm_clear_reg_bits() am33xx_cm_set_reg_bits()
This was partially found by using a static code analysis program called cppcheck.
Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Adds a generic CM driver API for enabling/disabling modules.
The SoC specific implementations are registered through cm_ll_data.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Tested-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
These are not accessed outside the cm*.c files themselves, so make them
static.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Acked-by: Paul Walmsley <paul@pwsan.com>
Tested-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Adds a generic CM driver API for waiting module to enter idle / standby.
The SoC specific implementations are registered through cm_ll_data.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Acked-by: Paul Walmsley <paul@pwsan.com>
Tested-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This patch consolidates the parameters provided for the SoC specific
cm_*_wait_module_ready calls, adds the missing cm_ll_data function
pointers and uses the now generic call from the mach-omap2 board code.
SoC specific *_wait_module_ready calls are also made static so they
can only be accessed through the generic CM driver API only.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Tested-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This is needed for expanding the generic CM driver API to include
AM33xx and OMAP4 also.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Acked-by: Paul Walmsley <paul@pwsan.com>
Tested-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This is not needed for anything. This also eases the consolidation of
the wait_module_ready / wait_module_idle calls behind a generic CM
driver API by reducing the number of needed parameters.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Tested-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
All OMAP IP blocks expect LE data, but CPU may operate in BE mode.
Need to use endian neutral functions to read/write h/w registers.
I.e instead of __raw_read[lw] and __raw_write[lw] functions code
need to use read[lw]_relaxed and write[lw]_relaxed functions.
If the first simply reads/writes register, the second will byteswap
it if host operates in BE mode.
Changes are trivial sed like replacement of __raw_xxx functions
with xxx_relaxed variant.
Signed-off-by: Victor Kamensky <victor.kamensky@linaro.org>
Signed-off-by: Taras Kondratiuk <taras.kondratiuk@linaro.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Most of the AM43x CM reg address offsets are with MSB bit '1' (on
16-bit value) leading to arithmetic miscalculations while calculating
CLOCK ENABLE register's address because cm_inst field was a type of
"const s16", so make it "const u16".
Also modify relevant functions so as to take care of the above.
[afzal@ti.com: fixup and cleanup]
Signed-off-by: Ankur Kishore <a-kishore@ti.com>
Signed-off-by: Afzal Mohammed <afzal@ti.com>
Acked-by: Rajendra Nayak <rnayak@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
am33xx_cm_wait_module_ready() checks if register offset is NULL.
int am33xx_cm_wait_module_ready(u16 inst, s16 cdoffs, u16 clkctrl_offs)
{
int i = 0;
if (!clkctrl_offs)
return 0;
In case of AM33xx, CLKCTRL register offset for different clock domains
are not uniformly placed. An example of this would be the RTC clock
domain with CLKCTRL offset at 0x00.
In such cases the module ready check is skipped which leads to a data
abort during boot-up when RTC registers is accessed.
Remove this check here to avoid checking module readiness for modules
with clkctrl register offset at 0x00.
Koen Kooi notes that this patch fixes a crash on boot with
CONFIG_RTC_DRV_OMAP=y with v3.8-rc5.
Signed-off-by: Hebbar Gururaja <gururaja.hebbar@ti.com>
Cc: Koen Kooi <koen@dominion.thruhere.net>
[paul@pwsan.com: noted Koen's test in the patch description]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
introduced by the earlier clean-up and clean up few more
things for enabling multiplatform support.
The multiplatform kernel has been booted on omaps on
top of this branch with the work-in-progress patches
applied manually.
We cannot yet enable the multiplatform support though.
We still need the common clock framework patches, some
solution for dma-omap.h, and serial-omap.h moved before
we can enable it.
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Merge tag 'omap-for-v3.8/cleanup-headers-prepare-multiplatform-v3-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/headers
From Tony Lindgren <tony@atomide.com>:
These changes deal with the issues of relative includes
introduced by the earlier clean-up and clean up few more
things for enabling multiplatform support.
The multiplatform kernel has been booted on omaps on
top of this branch with the work-in-progress patches
applied manually.
We cannot yet enable the multiplatform support though.
We still need the common clock framework patches, some
solution for dma-omap.h, and serial-omap.h moved before
we can enable it.
* tag 'omap-for-v3.8/cleanup-headers-prepare-multiplatform-v3-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP: Remove omap_init_consistent_dma_size()
ARM: OMAP: Remove NEED_MACH_GPIO_H
ARM: OMAP: Remove unnecessary mach and plat includes
ARM: OMAP2+: Fix relative includes for serial.h
ARM: OMAP: Fix relative includes for fpga.h
ARM: OMAP1: Remove relative includes
ARM: OMAP: Remove cpu_is_omap usage from plat-omap/dma.c
ARM: OMAP: Fix relative includes for debug-devices.h
ARM: OMAP: Remove plat-omap/common.h
ARM: OMAP: Move omap-pm-noop.c local to mach-omap2
ARM: OMAP: Fix relative includes for shared i2c.h file
ARM: OMAP: Make plat-omap/i2c.c port checks local
ARM: OMAP: Move omap2+ specific parts of sram.c to mach-omap2
ARM: OMAP: Move omap1 specific code to local sram.c
ARM: OMAP: Introduce common omap_map_sram() and omap_sram_reset()
ARM: OMAP: Split sram.h to local headers and minimal shared header
ARM: OMAP1: usb: fix sparse warnings
Conflicts:
arch/arm/mach-omap2/cm33xx.c
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Most of the prototypes in plat-omap/common.h are not
common to omap1 and omap2+, they are local to omap2+
and should not be in plat-omap/common.h.
The only shared function prototype in this file is
omap_init_clocksource_32k(), let's put that into
counter-32k.h.
Note that the new plat/counter-32k.h must not be
included from drivers, that will break omap2+ build
for CONFIG_MULTIPLATFORM.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Prepares for the future move of the PRM/CM code to drivers/. Also
includes some prcm.[ch] cleanup patches from the WDTIMER cleanup
series that don't need external acks.
Basic test logs for this branch on top of v3.7-rc2 are here:
http://www.pwsan.com/omap/testlogs/prcm_cleanup_a_3.8/20121021123719/
But due to the number of unrelated regressions present in v3.7-rc[12],
it's not particularly usable as a testing base. With reverts, fixes,
and workarounds applied as documented in:
http://www.pwsan.com/omap/testlogs/test_v3.7-rc2/20121020134755/README.txt
the following test logs were obtained:
http://www.pwsan.com/omap/testlogs/prcm_cleanup_a_3.8/20121020231757/
which indicate that the series tests cleanly.
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Merge tag 'omap-cleanup-a-for-3.8' of git://git.kernel.org/pub/scm/linux/kernel/git/pjw/omap-pending into omap-for-v3.8/cleanup-prcm
The first set of OMAP PRM/CM-related cleanup patches for 3.8.
Prepares for the future move of the PRM/CM code to drivers/. Also
includes some prcm.[ch] cleanup patches from the WDTIMER cleanup
series that don't need external acks.
Basic test logs for this branch on top of v3.7-rc2 are here:
http://www.pwsan.com/omap/testlogs/prcm_cleanup_a_3.8/20121021123719/
But due to the number of unrelated regressions present in v3.7-rc[12],
it's not particularly usable as a testing base. With reverts, fixes,
and workarounds applied as documented in:
http://www.pwsan.com/omap/testlogs/test_v3.7-rc2/20121020134755/README.txt
the following test logs were obtained:
http://www.pwsan.com/omap/testlogs/prcm_cleanup_a_3.8/20121020231757/
which indicate that the series tests cleanly.
Conflicts:
arch/arm/mach-omap2/Makefile
arch/arm/mach-omap2/clockdomain2xxx_3xxx.c
arch/arm/mach-omap2/pm24xx.c
Move the low-level SoC-specific clockdomain control functions into
cm*.c and prm*.c. For example, OMAP2xxx low-level clockdomain
functions go into cm2xxx.c. Then remove the unnecessary
clockdomain*xxx*.c files.
The objective is to centralize low-level CM and PRM register accesses
into the cm*.[ch] and prm*.[ch] files, and then to export an OMAP
SoC-independent API to higher-level OMAP power management code.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Rajendra Nayak <rnayak@ti.com>
Cc: Vaibhav Hiremath <hvaibhav@ti.com>
Acked-by: Rajendra Nayak <rnayak@ti.com>
Reviewed-by: Russ Dill <Russ.Dill@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
As far as PRM/CM/PRCM modules are concerned, AM33XX device is
different than OMAP3 and OMAP4 architectures; so similar to
PRM implementation, handle AM33XX CM separately.
This patch introduces AM33XX CM module low-level api's, used and
required by omap clockdomain and hwmod framework.
Please note that cm-regbits-33xx.h (register bit field offset)
and cm33xx.h (register addr offset) files are mostly auto generated.
Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>
Signed-off-by: Afzal Mohammed <afzal@ti.com>
Signed-off-by: Vaibhav Bedia <vaibhav.bedia@ti.com>
Cc: Kevin Hilman <khilman@ti.com>
Cc: Rajendra Nayak <rnayak@ti.com>
CC: Tony Lindgren <tony@atomide.com>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Benoit Cousson <b-cousson@ti.com>
[paul@pwsan.com: split the hwmod code changes in this patch into a separate
patch; updated for 3.5]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Russ Dill