linux-toradex.git/drivers/base/power/clock_ops.c, branch v5.11-rc2

PM / clk: Remove error message on out-of-memory condition

2019-05-28T17:40:21+00:00

There is no need to print an error message if kstrdup() fails, as the
memory allocation core already takes care of that.

Note that commit 59d84ca8c46a93ad ("PM / OPP / clk: Remove unnecessary
OOM message") already removed similar error messages, but this one was
forgotten.

Signed-off-by: Geert Uytterhoeven 
Signed-off-by: Rafael J. Wysocki

drivers: base: power: clock_ops: Use of_clk_get_parent_count()

2019-05-28T17:38:47+00:00

Use of_clk_get_parent_count() instead of open coding.

Reviewed-by: Geert Uytterhoeven 
Signed-off-by: Kefeng Wang 
Signed-off-by: Rafael J. Wysocki

drivers: base: power: add proper SPDX identifiers on files that did not have them.

2019-04-04T18:03:40+00:00

There were a few files in the driver core power code that did not have
SPDX identifiers on them, so fix that up.  At the same time, remove the
"free form" text that specified the license of the file, as that is
impossible for any tool to properly parse.

Cc: "Rafael J. Wysocki" 
Signed-off-by: Greg Kroah-Hartman

PM: clock_ops: fix missing clk_prepare() return value check

2019-01-18T10:47:07+00:00

clk_prepare() can fail, so check its status and if it fails,
issue an error message and change the clock_entry_status to
PCE_STATUS_ERROR.

Signed-off-by: Aditya Pakki 
[ rjw: Subject ]
Signed-off-by: Rafael J. Wysocki

PM / clk: signedness bug in of_pm_clk_add_clks()

2018-08-24T09:52:34+00:00

"count" needs to be signed for the error handling to work.  I made "i"
signed as well so they match.

Fixes: 02113ba93ea4 (PM / clk: Add support for obtaining clocks from device-tree)
Cc: 4.6+  # 4.6+
Signed-off-by: Dan Carpenter 
Signed-off-by: Rafael J. Wysocki

PM / clk: Add support for adding a specific clock from device-tree

2016-06-27T22:42:10+00:00

Some drivers using the PM clocks framework need to add specific clocks
from device-tree using a name by calling the functions
of_clk_get_by_name() and then pm_clk_add_clk(). Rather than having
drivers call both functions, add a helper function of_pm_clk_add_clk()
that will call these functions so drivers can call a single function
to add a specific clock from device-tree.

Signed-off-by: Jon Hunter 
Signed-off-by: Rafael J. Wysocki

PM / clk: export symbols for existing pm_clk_<...> API fcns

2016-06-14T23:42:15+00:00

While trying to convert a DMA driver from bool to tristate, we
encountered the following:

ERROR: "pm_clk_add_clk" [drivers/dma/tegra210-adma.ko] undefined!
ERROR: "pm_clk_create" [drivers/dma/tegra210-adma.ko] undefined!
ERROR: "pm_clk_destroy" [drivers/dma/tegra210-adma.ko] undefined!
ERROR: "pm_clk_suspend" [drivers/dma/tegra210-adma.ko] undefined!
ERROR: "pm_clk_resume" [drivers/dma/tegra210-adma.ko] undefined!

Since in principle there is nothing preventing these functions
from being used in modular code as well as builtin, we add the
export of them.  We expand the scope to also include:

   pm_clk_add
   of_pm_clk_add_clks
   pm_clk_remove
   pm_clk_remove_clk
   pm_clk_init
   pm_clk_runtime_suspend
   pm_clk_runtime_resume
   pm_clk_add_notifier

...since these functions are also non-static and presumably form
part of the existing API used by other drivers that may become
modular in the future.

Signed-off-by: Paul Gortmaker 
Acked-by: Pavel Machek 
Signed-off-by: Rafael J. Wysocki

PM / clk: ensure we don't allocate a -ve size of count clks

2016-04-26T19:11:35+00:00

It is entirely possible for of_count_phandle_wit_args to
return a -ve error return value so we need to check for this
otherwise we end up allocating a negative number of clk objects.

Signed-off-by: Colin Ian King 
Acked-by: Pavel Machek 
Signed-off-by: Rafael J. Wysocki

PM / clk: Add support for obtaining clocks from device-tree

2016-03-17T01:32:04+00:00

The PM clocks framework requires clients to pass either a con-id or a
valid clk pointer in order to add a clock to a device. Add a new
function of_pm_clk_add_clks() to allows device clocks to be retrieved
from device-tree and populated for a given device. Note that it is
not necessary to make the compilation of this new function dependent
upon CONFIG_OF because there are stubs functions for the device-tree
APIs used.

In order to handle errors encountered when adding clocks from
device-tree, add a function pm_clk_remove_clk() to remove any clocks
(using a pointer to the clk structure) that have been added
successfully before the error occurred.

Signed-off-by: Jon Hunter 
Acked-by: Geert Uytterhoeven 
Signed-off-by: Rafael J. Wysocki

PM / Domains: add setter for dev.pm_domain

2016-01-08T00:12:06+00:00

Adds a function that sets the pointer to dev_pm_domain in struct device
and that warns if the device has already finished probing. The reason
why we want to enforce that is because in the general case that can
cause problems and also that we can simplify code quite a bit if we can
always assume that.

This patch also changes all current code that directly sets the
dev.pm_domain pointer.

Signed-off-by: Tomeu Vizoso 
Reviewed-by: Ulf Hansson 
Signed-off-by: Rafael J. Wysocki