Commit Graph

24 Commits

Author SHA1 Message Date
Nishanth Menon
1e037794f7 ARM: OMAP3+: PRM: register interrupt information from DT
Allow the PRM interrupt information to be picked up from device tree.
OMAP3 may use legacy boot and needs to be compatible with old dtbs
(without interrupt populated), for these, we use the value which is
pre-populated.

Signed-off-by: Nishanth Menon <nm@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
2014-09-08 10:54:06 -05:00
Tero Kristo
ba12c24286 ARM: OMAP3: control: isolate control module init to its own function
Control module related PM initializations are now moved within control
module driver. Done in preparation to isolate the code to its own driver.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
2014-07-04 17:02:21 +03:00
Tero Kristo
c2148e5930 ARM: OMAP3: PRM: move modem reset and iva2 idle to PRM driver
Done in preparation to move PRM into its own driver.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
2014-07-04 17:02:20 +03:00
Tero Kristo
c5180a2b3e ARM: OMAP3: PRM: move PRM init code from PM core to the driver
Helps to isolate the PRM driver.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
2014-07-04 17:02:17 +03:00
Tero Kristo
7e28b465fd ARM: OMAP3: PRM: add API for saving PRM scratchpad contents
This isolates the PRM register access within the PRM driver.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
2014-07-04 17:02:15 +03:00
Tero Kristo
9efcea09b0 ARM: OMAP3: PRM: add API for checking and clearing cold reset status
This isolates the PRM register access within the PRM driver.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
2014-07-04 17:02:14 +03:00
Tero Kristo
55c6c3ad90 ARM: OMAP3: PRM: move modem reset to PRM driver
This is a more proper isolation of the code. Done in preparation of making
PRM an individual driver.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
2014-07-04 17:02:13 +03:00
Tero Kristo
9de367fae0 ARM: OMAP3: PRM: move iva reset to PRM driver
This is a more proper isolation of the code. Done in preparation of making
PRM an individual driver.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
2014-07-04 17:02:11 +03:00
Tero Kristo
0efc0f6ec2 ARM: OMAP3: PRM: move prcm wakeup helper to prm driver
Done in preparation to make the prm an individual driver.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
2014-07-04 17:02:00 +03:00
Tony Lindgren
ea351c1603 Some OMAP PRCM cleanup patches. These help prepare to convert the PRCM
code into drivers.
 
 Basic build, boot, and PM test results are available here:
 
 http://www.pwsan.com/omap/testlogs/prcm-cleanup-v3.16/20140515213244/
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJTdZbbAAoJEMePsQ0LvSpLql4P/2pktswM4PLcmGVlS9AUiH25
 +lT8ctTHUAS3n7hBSmZQCPWE/4hAsx7UDGUDTT3t6ASIHxAUsx0/RQ4/RTZQ7ZJZ
 3cGUS5Y43v6n1RCP4Ruvs3R7yOamQWVCX2WR4cH0OlwfF2YVfeUDlJIJ0bK0/p5g
 appCjso1mxl1VrnHSLGtFLPxuVRDDEUZFa/AIomwsHabZTZcg5KuIEZs/K828CGt
 yd8ltx1gZIpJQb8j85ulVWMNeT93I9uNGcAxJcgwWWgqhkr1uZ/Rudl3F+bXkQhd
 NTfdI5b9IP+hdJAy47X3LQ6Nj9MKmGClyGdKkj8D6l0mqsC7XwcFEpQHh1XVlXp8
 pTV34MZ/hV54eRpoL6ggS06/Yw/9UYOaTR+O2v2w5SNwUdB9ghvKpF2go1sT8aiZ
 79M+a05DxwENww7/9ybN7Fxcvb4+5NMmvOH8EeENfsRJVkPXkj8Y/9GaicOdbpkg
 sAHKnpWrLRBMlUIEthoI5CT5I2goHBIN754BUnK+EoPsYutGTPH9WkDMJJJ3ZBTt
 Jc6krR7QZWfDyraSUiweq9g0b1+2mqp2dG8x9m4klGwyifCtnnNERDRf+eINwAZ3
 o9sSjJyijE9eZudLdP3Q9cdTIj5P4moWsn6SqTpkmHDvAPxsZnkrzVa7LVKV2fy3
 Q3R2Cc7IoOjFDwxb3FFA
 =3vOc
 -----END PGP SIGNATURE-----

Merge tag 'for-v3.16/prcm-cleanup-a' of git://git.kernel.org/pub/scm/linux/kernel/git/pjw/omap-pending into omap-for-v3.16/prcm

Some OMAP PRCM cleanup patches.  These help prepare to convert the PRCM
code into drivers.

Basic build, boot, and PM test results are available here:

http://www.pwsan.com/omap/testlogs/prcm-cleanup-v3.16/20140515213244/

Conflicts:
	arch/arm/mach-omap2/cm3xxx.c
	arch/arm/mach-omap2/cm44xx.c

Also fixed up new section mismatch warnings.
2014-05-16 15:26:22 -07:00
Tero Kristo
b550e47f5e ARM: OMAP3/4: PRM: add support of late_init call to prm_ll_ops
SoC specific late_init call is now registered during PRM init, and will
be called automatically by PRM core. This helps to get rid of some
redundant initcalls and cpu_is_X checks from the PRM code.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2014-05-15 22:35:04 -06:00
Tero Kristo
2541d15f16 ARM: OMAP3/OMAP4: PRM: add prm_features flags and add IO wakeup under it
prm_features flag will contain SoC specific feature enabler flags. Initially
IO wakeup is added under this. Helps to get rid of runtime cpu_is_X checks.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2014-05-15 22:34:58 -06:00
Tero Kristo
81243651ba ARM: OMAP3/4: PRM: provide io chain reconfig function through irq setup
This helps to make the PRM registration modular, and also gets rid of a
cpu type check done later.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2014-05-15 22:34:54 -06:00
Tero Kristo
d8871cd245 ARM: OMAP2+: PRM: remove unnecessary cpu_is_XXX calls from prm_init / exit
Done in preparation to make PRM its own driver, as the cpu_is_XXX calls are
not available outside mach-omap2 folder.

The init functions are called only from cpu specific init chain, and thus
don't need to double check against cpu type.

The exit calls check against the data provided during init-time registration
and thus don't need cpu check either.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
[paul@pwsan.com: updated to apply]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2014-05-15 22:34:51 -06:00
Tony Lindgren
b76c8b19b0 ARM: OMAP2+: Use omap initcalls
This way the initcalls don't run on other SoCs on multiplatform
kernels. Otherwise we'll get something like this when booting
on vexpress:

omap_hwmod: _ensure_mpu_hwmod_is_setup: MPU initiator hwmod mpu not yet registered
...
WARNING: at arch/arm/mach-omap2/pm.c:82 _init_omap_device+0x74/0x94()
_init_omap_device: could not find omap_hwmod for mpu
...
omap-dma-engine omap-dma-engine: OMAP DMA engine driver
...

Tested-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2013-01-11 11:24:18 -08:00
Tony Lindgren
2cd1f483b8 Some OMAP PRCM and sparse fixes against v3.8-rc1. A basic set of test
logs are available here:
 
     http://www.pwsan.com/omap/testlogs/prcm_fixes_b_3.8-rc/20130102120724/
 
 The 3730 Beagle XM here has an intermittent failure mounting SD root,
 but the suspicion right now is that this is due to a failing SD card,
 rather than any change introduced by these patches.
 
 This second version includes a few changes requested by Tony Lindgren.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.12 (GNU/Linux)
 
 iQIcBAABAgAGBQJQ5IkPAAoJEMePsQ0LvSpL/RQQAJUbGPZTdMEH2DHHDVPRxgBE
 bWEg0RQfzheOLfFvfot2tReJoN7GMlhzcDq2DSHZLwp5b9XgOgOJdNdldvrvFljD
 p3QEy+y/7ZSgsAdgDV33vAAUAv4c0CIh0cKgw3JwOn/dqVSbiMXXqXe1kZe419gi
 bbJHBr6fZH63qvGzkjI17vl3lDq6RsX7vgtEQ9TeiTMUAOnrXzp3rt9oDNVsChSs
 Ml6h1WKnxQdMFjbNNmBOUGltSg7O1rwuWeS/9mg77yV3lIZ5QdmAVlcq6lUB+jqy
 CWhAYbrhXMBPYFaxzw0I8h00m0VNBSOZf2e1d5Lw8wU8dVxQ3PVZCI4SyRssBdd3
 T+91zy4Axmo+SWrkTxpq+yE2Sn1AMZC4mJwI62UhCZV8TPPvek8IlK3ktKeV97ql
 BNehuGYqbc3u5TiIjO8K+akTBKKTVDdXaah9ms8rtQ4hcwLwC0VA/71R9qaQJx3E
 mGf3pRK6FSV83vEMrGb2mRk3ByGHzpYlMD0sb4+0OFvkj5Hyv7OCPb0TJapn6OPO
 vpeG6pIbHN3p/mKrj/RNHVtvpV5/mHJmMOXgkcXLcdlZhsnGE21dqw/vPrvjf3Wa
 SnUp7q48/4a2FP2d0KpQ+CpHyLyNEs4x4zs9hfjHGsYs1fWBwdu0+/8rVPaAEjjB
 iUa8sxlv/1o0rJfiyRkd
 =oUTN
 -----END PGP SIGNATURE-----

Merge tag 'omap-fixes-a2-for-v3.8-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/pjw/omap-pending into omap-for-v3.8-rc2/fixes

Some OMAP PRCM and sparse fixes against v3.8-rc1.  A basic set of test
logs are available here:

    http://www.pwsan.com/omap/testlogs/prcm_fixes_b_3.8-rc/20130102120724/

The 3730 Beagle XM here has an intermittent failure mounting SD root,
but the suspicion right now is that this is due to a failing SD card,
rather than any change introduced by these patches.

This second version includes a few changes requested by Tony Lindgren.
2013-01-03 11:04:21 -08:00
Paul Walmsley
7e7fff8254 ARM: OMAP2/3: PRM: fix bogus OMAP2xxx powerstate return values
On OMAP2xxx chips, the register bitfields for the
PM_PWSTCTRL_*.POWERSTATE and PM_PWSTST_*.LASTSTATEENTERED are
different than those used on OMAP3/4.  The order is reversed.  So, for
example, on OMAP2xxx, 0x0 indicates 'ON'; but on OMAP3/4, 0x0
indicates 'OFF'.  Similarly, on OMAP2xxx, 0x3 indicates 'OFF', but on
OMAP3/4, 0x3 indicates 'ON'.

To fix this, we treat the OMAP3/4 values as the powerdomain API
values, and create new low-level powerdomain functions for the
OMAP2xxx chips which translate between the OMAP2xxx values and the
OMAP3/4 values.

Without this patch, the conversion of the OMAP2xxx PM code to the
functional powerstate code results in a non-booting kernel.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
2013-01-02 12:07:16 -07:00
Tony Lindgren
e8d3d47a98 ARM: OMAP2+: Drop plat/cpu.h for omap2plus
The cpu_is_omap macros are now local to arch/arm/mach-omap2
in soc.h and plat/cpu.h can finally be dropped for omap2+.
Thanks everybody for help with fixing the drivers.

Note that we can now also remove the unused plat/cpu.h from
smartreflex.c and isp.c as they will cause compile errors
with ARCH_MULTIPLATFORM enabled.

Cc: Kevin Hilman <khilman@deeprootsystems.com>
Acked-by: Jean Pihet <jean.pihet@newoldbits.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-12-17 10:50:41 -08:00
Paul Walmsley
63a293e000 ARM: OMAP2+: PRM: initialize some PRM functions early
Some PRM functions will need to be called by the hwmod code early in
kernel init.  To handle this, split the PRM initialization code into
early and late phases.  The early init is handled via mach-omap2/io.c,
while the late init is handled by subsys_initcall().

Signed-off-by: Paul Walmsley <paul@pwsan.com>
2012-11-21 16:15:16 -07:00
Paul Walmsley
b99db36cdf ARM: OMAP2+: PRCM: remove obsolete prcm.[ch]
arch/arm/mach-omap2/prcm.c and arch/arm/plat-omap/include/plat/prcm.h
are now completely unused and can be removed.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Tested-by: Vaibhav Hiremath <hvaibhav@ti.com>
2012-11-08 15:09:26 -07:00
Paul Walmsley
d08cce6a1d ARM: OMAP2/3: PRM: add SoC reset functions (using the CORE DPLL method)
Add SoC reset functions into the PRM code.  These functions are based
on code from mach-omap2/prcm.c.  They reset the SoC using the CORE DPLL
reset method (as opposed to one of the other two or three chip reset
methods).

Adding them here will facilitate their removal from
arch/arm/mach-omap2/prcm.c.  (prcm.c is deprecated.)

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Tested-by: Vaibhav Hiremath <hvaibhav@ti.com>
2012-11-08 12:33:07 -07:00
Paul Walmsley
2bb2a5d30a ARM: OMAP2+: PRM: create PRM reset source API for the watchdog timer driver
The OMAP watchdog timer driver needs to determine what caused the SoC
to reset for its GETBOOTSTATUS ioctl.  So, define a set of standard
reset sources across OMAP SoCs.  For OMAP2xxx, 3xxx, and 4xxx SoCs,
define mappings from the SoC-specific reset source register bits to
the standardized reset source IDs.  Create SoC-specific PRM functions
that read the appropriate per-SoC register and use the mapping to
return the standardized reset bits.  Register the SoC-specific PRM
functions with the common PRM code via prm_register().  Create a
function in the common PRM code, prm_read_reset_sources(), that
calls the SoC-specific function, registered during boot.

This patch does not yet handle some SoCs, such as AM33xx.  Those SoCs
were not handled by the code this will replace.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
2012-10-21 01:01:13 -06:00
Paul Walmsley
498153995b ARM: OMAP2+: powerdomain/PRM: move the low-level powerdomain functions into PRM
Move the low-level SoC-specific powerdomain control functions into
prm*.c.  For example, OMAP2xxx low-level powerdomain functions go into
prm2xxx.c.  Then remove the unnecessary powerdomain*xxx*.c files.

The objective is to centralize low-level PRM register accesses into
the 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>
2012-10-21 01:01:10 -06:00
Paul Walmsley
139563ad27 ARM: OMAP2+: PRM: split PRM functions into OMAP2, OMAP3-specific files
Move OMAP3xxx-specific PRM functions & macros into prm3xxx.[ch] and
OMAP2xxx-specific macros into prm2xxx.h.  (prm2xxx.c will be created
by a subsequent patch when it's needed.)  Move basic PRM register
access functions into static inline functions in prm2xxx_3xxx.h, leaving
only OMAP2/3 hardreset functions in prm2xxx_3xxx.c.

Also clarify the initcall function naming to reinforce that this code
is specifically for the PRM IP block.

This is in preparation for the upcoming powerdomain series and the
upcoming move of this code to drivers/.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Reviewed-by: Russ Dill <Russ.Dill@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
2012-10-21 01:01:10 -06:00