Commit Graph

12 Commits

Author SHA1 Message Date
Tomi Valkeinen
fc01387302 ARM: OMAP: change get_context_loss_count ret value to int
get_context_loss_count functions return context loss count as u32, and
zero means an error. However, zero is also returned when context has
never been lost and could also be returned when the context loss count
has wrapped and goes to zero.

Change the functions to return an int, with negative value meaning an
error.

OMAP HSMMC code uses omap_pm_get_dev_context_loss_count(), but as the
hsmmc code handles the returned value as an int, with negative value
meaning an error, this patch actually fixes hsmmc code also.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Acked-by: Kevin Hilman <khilman@ti.com>
Acked-by: Paul Walmsley <paul@pwsan.com>
[tony@atomide.com: updated to fix a warning with recent dmtimer changes]
Signed-off-by: Tony Lindgren <tony@atomide.com>
2011-11-04 17:41:07 -07:00
Kevin Hilman
e69c22b145 OMAP2+: voltage: keep track of powerdomains in each voltagedomain
When a powerdomain is registered and it has an associated voltage domain,
add the powerdomain to the voltagedomain using voltdm_add_pwrdm().

Also add voltagedomain iterator helper functions to iterate over all
registered voltagedomains and all powerdomains associated with a
voltagedomain.

Modeled after a similar relationship between clockdomains and powerdomains.

Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-09-15 11:39:10 -07:00
Kevin Hilman
048a7034f1 OMAP2+: powerdomain: add voltage domain lookup during register
When a powerdomain is registered, lookup the voltage domain by name
and keep a pointer to the containing voltagedomain in the powerdomain
structure.

Modeled after similar method between powerdomain and clockdomain layers.

Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-09-15 11:39:10 -07:00
Kevin Hilman
8f1bec246c OMAP2+: powerdomain: add voltagedomain to struct powerdomain
Each powerdomain is associated with a voltage domain.  Add an entry to
struct powerdomain where the enclosing voltagedomain can be
referenced.

Modeled after similar relationship between clockdomains and powerdomains.

Signed-off-by: Kevin Hilman <khilman@ti.com>
2011-09-15 11:39:10 -07:00
Paul Walmsley
8179488a36 OMAP: powerdomain: remove omap_chip bitmasks
At Tony's request, remove the omap_chip bitmasks from the powerdomain
definitions.  Instead, initialize powerdomains based on one or more
lists that are applicable to a particular SoC family, variant, and
silicon revision.

Gražvydas Ignotas <notasas@gmail.com> found and reported a bug in a
related patch that also applied to this patch - thanks Gražvydas.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Gražvydas Ignotas <notasas@gmail.com>
2011-09-14 17:20:44 -06:00
Paul Walmsley
129c65ee66 OMAP: powerdomain: split pwrdm_init() into two functions
In preparation for OMAP_CHIP() removal, split pwrdm_init() into three
functions.  This allows some of them to be called multiple times: for
example, pwrdm_register_pwrdms() can be called once to register
powerdomains that are common to a group of SoCs, and once to register
powerdomains that are specific to a single SoC.

The appropriate order to call these functions - which is enforced
by the code - is:

1. pwrdm_register_platform_funcs()
2. pwrdm_register_pwrdms() (can be called multiple times)
3. pwrdm_complete_init()

Convert the OMAP2, 3, and 4 powerdomain init code to use these new
functions.

While here, improve documentation, and increase CodingStyle
conformance by shortening some local variable names.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
2011-09-14 17:20:44 -06:00
Lucas De Marchi
25985edced Fix common misspellings
Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
2011-03-31 11:26:23 -03:00
Paul Walmsley
21ace5452c Merge remote branches 'remotes/origin/pwrdm_clkdm_b_2.6.39', 'remotes/origin/pwrdm_add_can_lose_context_fns_2.6.39', 'remotes/origin/omap_device_a_2.6.39', 'remotes/origin/mmc_a_2.6.39', 'remotes/origin/hwmod_b_2.6.39', 'remotes/origin/dmtimer_a_2.6.39', 'remotes/origin/pwrdm_clkdm_a_2.6.39', 'remotes/origin/clkdm_statdep_omap4_2.6.39', 'remotes/origin/clk_a_2.6.39', 'remotes/origin/clk_autoidle_a_2.6.39', 'remotes/origin/clk_autoidle_b_2.6.39', 'remotes/origin/clk_b_2.6.39', 'remotes/origin/clk_clkdm_a_2.6.39', 'remotes/origin/misc_a_2.6.39', 'remotes/origin/for_2.6.39/omap3_hwmod_data' and 'remotes/origin/wdtimer_a_2.6.39' into tmp-integration-2.6.39-20110310-024 2011-03-10 22:41:28 -07:00
Paul Walmsley
694606c4ef OMAP2+: powerdomain: add pwrdm_can_ever_lose_context()
Some drivers wish to know whether the device that they control can
ever lose context, for example, when the device's enclosing
powerdomain loses power.  They can use this information to determine
whether it is necessary to save and restore device context, or whether
it can be skipped.  Implement the powerdomain portion of this by
adding the function pwrdm_can_ever_lose_context().  This is not for
use directly from driver code, but instead is intended to be called
from driver-subarch integration code (i.e., arch/arm/*omap* code).

Currently, the result from this function should be passed into the
driver code via struct platform_data, but at some point this should
be part of some common or OMAP-specific device code.

While here, update file copyrights.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
2011-03-07 19:28:15 -07:00
Rajendra Nayak
3673d1ef5d OMAP: powerdomain: remove unused func declaration
Trivial fix to remove the unused function declaration
from the powerdomain header.

Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2011-02-25 16:06:46 -07:00
Kevin Hilman
7f595674e0 OMAP2+: powerdomain: add API to get context loss count
Add new powerdomain API

    u32 pwrdm_get_context_loss_count(struct powerdomain *pwrdm)

for checking how many times the powerdomain has lost context.  The
loss count is the sum of the powerdomain off-mode counter, the
logic off counter and the per-bank memory off counter.

Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
[paul@pwsan.com: removed bogus return value on error; improved kerneldoc;
 tweaked commit message]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
2010-12-21 21:31:55 -07:00
Paul Walmsley
72e06d0872 OMAP2+: powerdomain: move header file from plat-omap to mach-omap2
The OMAP powerdomain code and data is all OMAP2+-specific.  This seems
unlikely to change any time soon.  Move plat-omap/include/plat/powerdomain.h
to mach-omap2/powerdomain.h.  The primary point of doing this is to remove
the temptation for unrelated upper-layer code to access powerdomain code
and data directly.

As part of this process, remove the references to powerdomain data
from the GPIO "driver" and the OMAP PM no-op layer, both in plat-omap.
Change the DSPBridge code to point to the new location for the
powerdomain headers.  The DSPBridge code should not be including the
powerdomain headers; these should be removed.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Cc: Omar Ramirez Luna <omar.ramirez@ti.com>
Cc: Felipe Contreras <felipe.contreras@gmail.com>
Cc: Greg Kroah-Hartman <greg@kroah.com>
2010-12-21 21:05:16 -07:00