drivers: regulator: DT property regulator-enable-ramp-delay

Implement regulator DT property regulator-enable-ramp-delay.

Signed-off-by: Etienne Carriere <etienne.carriere@foss.st.com>
Signed-off-by

drivers: regulator: DT property regulator-enable-ramp-delay

Implement regulator DT property regulator-enable-ramp-delay.

Signed-off-by: Etienne Carriere <etienne.carriere@foss.st.com>
Signed-off-by: Thomas Bourgoin <thomas.bourgoin@foss.st.com>
Acked-by: Gatien Chevallier <gatien.chevallier@foss.st.com>

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drivers: regulator: DT property regulator-ramp-delay

Implement regulator DT property regulator-ramp-delay.

Signed-off-by: Etienne Carriere <etienne.carriere@foss.st.com>
Signed-off-by: Thomas Bourg

drivers: regulator: DT property regulator-ramp-delay

Implement regulator DT property regulator-ramp-delay.

Signed-off-by: Etienne Carriere <etienne.carriere@foss.st.com>
Signed-off-by: Thomas Bourgoin <thomas.bourgoin@foss.st.com>
Acked-by: Gatien Chevallier <gatien.chevallier@foss.st.com>

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drivers: regulator: change tree trace level

Change regulator trace level of print tree so that
it can bee seen when it is requested by
xtest --stats --regulators.

Signed-off-by: Pascal Paillet <p.p

drivers: regulator: change tree trace level

Change regulator trace level of print tree so that
it can bee seen when it is requested by
xtest --stats --regulators.

Signed-off-by: Pascal Paillet <p.paillet@foss.st.com>
Acked-by: Gatien Chevallier <gatien.chevallier@foss.st.com>
Acked-by: Jerome Forissier <jerome.forissier@linaro.org>
Reviewed-by: Etienne Carriere <etienne.carriere@foss.st.com>

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drivers: regulator: split regulator_supported_voltages() assertions

Split assertions in regulator_supported_voltages() to ease debugging,
providing a better indication of which condition is not fulf

drivers: regulator: split regulator_supported_voltages() assertions

Split assertions in regulator_supported_voltages() to ease debugging,
providing a better indication of which condition is not fulfilled.

Signed-off-by: Etienne Carriere <etienne.carriere@foss.st.com>
Acked-by: Gatien Chevallier <gatien.chevallier@foss.st.com>
Acked-by: Patrick Delaunay <patrick.delaunay@foss.st.com>

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drivers: regulator: fix error case in regulator_supported_voltages()

Fix case when .supported_voltages() handler is supported. If successful
it shall assert voltage description data. If it returns
T

drivers: regulator: fix error case in regulator_supported_voltages()

Fix case when .supported_voltages() handler is supported. If successful
it shall assert voltage description data. If it returns
TEE_ERROR_NOT_SUPPORTED, it shall use the pre-filled fallback description.

Fixes: af5b9881111c ("drivers: regulator: supported voltage consider levels bounds")
Signed-off-by: Etienne Carriere <etienne.carriere@foss.st.com>
Acked-by: Gatien Chevallier <gatien.chevallier@foss.st.com>
Acked-by: Patrick Delaunay <patrick.delaunay@foss.st.com>

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drivers: regulator: use mutex_pm_aware

Use newly introduced struct mutex_pm_aware semaphore to protect
regulator accesses.

Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Eti

drivers: regulator: use mutex_pm_aware

Use newly introduced struct mutex_pm_aware semaphore to protect
regulator accesses.

Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Etienne Carriere <etienne.carriere@foss.st.com>

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drivers: regulator: do not cache voltage level value

Always read current voltage level from the device instead of
caching the level in struct regulator. This fixes issues for
when the regulator leve

drivers: regulator: do not cache voltage level value

Always read current voltage level from the device instead of
caching the level in struct regulator. This fixes issues for
when the regulator level value depends on the parent regulator
(supply). It is up the regulator drivers to cache or not this
value in their private data if applicable.

Fixes: 1a3d3273040b ("drivers: regulator framework")
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Etienne Carriere <etienne.carriere@foss.st.com>

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drivers: regulator: supported voltage consider levels bounds

Assert regulator_supported_voltages() provides a list that takes into
account the min/max voltage levels possibly set from the secure DT.

drivers: regulator: supported voltage consider levels bounds

Assert regulator_supported_voltages() provides a list that takes into
account the min/max voltage levels possibly set from the secure DT.

Acked-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Etienne Carriere <etienne.carriere@foss.st.com>

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drivers: regulator: fix variable sized voltages fallback

Fix build issue reported by Clang on variable size field desc
not being located at the end of struct voltages_fallback. The
error was reporte

drivers: regulator: fix variable sized voltages fallback

Fix build issue reported by Clang on variable size field desc
not being located at the end of struct voltages_fallback. The
error was reported with a trace message like below:

core/include/drivers/regulator.h:118:4: warning: field 'voltages_fallback' with variable sized type 'struct voltages_fallback' not at the end of a struct or class is a GNU extension [-Wgnu-variable-sized-type-not-at-end]
} voltages_fallback;
^
core/drivers/regulator/regulator_fixed.c:27:19: warning: field 'regulator' with variable sized type 'struct regulator' not at the end of a struct or class is a GNU extension [-Wgnu-variable-sized-type-not-at-end]
struct regulator regulator;
^
2 warnings generated.

To achieve this the variable size field entries is removed from
struct regulator_voltages that is renamed struct regulator_voltages_desc.
API function regulator_supported_voltages() and regulator drivers handler
function ::supported_voltages are updated the get 2 input arguments the
second being the levels arrays which size is defined by the description
argument.

Impacted sources files are updated accordingly.

Fixes: 43c155ba111d ("drivers: regulator: list supported levels")
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Etienne Carriere <etienne.carriere@foss.st.com>

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drivers: regulator: print regulator tree summary

Changes implementation of regulator_print_state() to better show
the regulator tree hierarchy and renames the function to
regulator_print_tree().

Th

drivers: regulator: print regulator tree summary

Changes implementation of regulator_print_state() to better show
the regulator tree hierarchy and renames the function to
regulator_print_tree().

The function now depends on CFG_DRIVERS_REGULATOR_PRINT_TREE
being enabled.

Reviewed-by: Jens Wiklander <jens.wiklander@linaro.org>
Co-developed-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>
Signed-off-by: Etienne Carriere <etienne.carriere@foss.st.com>

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tree-wide: remove useless newline character in *MSG() messages

The *MSG() macros take care of printing a newline. Adding a newline
character ('\n') is useless. Remove it.

Signed-off-by: Vincent Mai

tree-wide: remove useless newline character in *MSG() messages

The *MSG() macros take care of printing a newline. Adding a newline
character ('\n') is useless. Remove it.

Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Acked-by: Etienne Carriere <etienne.carriere@foss.st.com>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>

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drivers: regulator: list supported levels

Adds regulator API function regulator_supported_voltages() to get the
list of the voltage levels supported by the regulator.

Voltage level array is either

drivers: regulator: list supported levels

Adds regulator API function regulator_supported_voltages() to get the
list of the voltage levels supported by the regulator.

Voltage level array is either an array of increasing ordered levels, in
microvolt, or is a triplet [min, max, step] for linear step incremental
levels.

Acked-by: Jerome Forissier <jerome.forissier@linaro.org>
Signed-off-by: Etienne Carriere <etienne.carriere@foss.st.com>

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drivers: regulator: always on property

Implements always-on regulator property for regulators that once enabled
shall never be disabled. This is archived using a regulator_enable()
call to increment

drivers: regulator: always on property

Implements always-on regulator property for regulators that once enabled
shall never be disabled. This is archived using a regulator_enable()
call to increment its refcount.

Acked-by: Jerome Forissier <jerome.forissier@linaro.org>
Acked-by: Gatien Chevallier <gatien.chevallier@foss.st.com>
Signed-off-by: Etienne Carriere <etienne.carriere@foss.st.com>

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drivers: fix flags in regulator framework

Fixes commit introducing regulator voltage that did not implement
always-on flag.

Fixes: 1a3d3273040b ("drivers: regulator framework")
Acked-by: Jerome For

drivers: fix flags in regulator framework

Fixes commit introducing regulator voltage that did not implement
always-on flag.

Fixes: 1a3d3273040b ("drivers: regulator framework")
Acked-by: Jerome Forissier <jerome.forissier@linaro.org>
Acked-by: Gatien Chevallier <gatien.chevallier@foss.st.com>
Signed-off-by: Etienne Carriere <etienne.carriere@foss.st.com>

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drivers: regulator framework

Introduces a voltage regulator driver framework for management
of regulators and supply dependencies. The framework permits 1
regulator supply per regulator.

API functi

drivers: regulator framework

Introduces a voltage regulator driver framework for management
of regulators and supply dependencies. The framework permits 1
regulator supply per regulator.

API function regulator_register() allows a regulator driver to
register a regulator in the regulator framework.

Supported operation here are to enable, disable, get and set
voltage level. They are all optional.

Registered regulators are referenced in a list for initialization
resource release and debug purpose.

Acked-by: Gatien Chevallier <gatien.chevallier@foss.st.com>
Acked-by: Jerome Forissier <jerome.forissier@linaro.org>
Co-developed-by: Pascal Paillet <p.paillet@foss.st.com>
Signed-off-by: Pascal Paillet <p.paillet@foss.st.com>
Signed-off-by: Etienne Carriere <etienne.carriere@foss.st.com>

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