linux.git/drivers/devfreq/exynos-bus.c, branch v5.10.258

PM / devfreq: event: Change prototype of devfreq_event_get_edev_by_phandle function

2020-09-29T08:50:10+00:00

Previously, devfreq core support 'devfreq-events' property in order to get
the devfreq-event device by phandle. But, 'devfreq-events' property name is
not proper on devicetree binding because this name doesn't mean
the any h/w attribute.

The devfreq-event core hand over the rights to decide the property name
for getting the devfreq-event device on devicetree. Each devfreq-event driver
will decide the property name on devicetree binding and then pass
the their own property name to devfreq_event_get_edev_by_phandle function.

And change the prototype of devfreq_event_get_edev_count function
because of used deprecated 'devfreq-events' property.

Acked-by: Krzysztof Kozlowski 
Signed-off-by: Chanwoo Choi

PM / devfreq: Change prototype of devfreq_get_devfreq_by_phandle function

2020-09-29T08:50:10+00:00

Previously, devfreq core support 'devfreq' property in order to get
the devfreq device by phandle. But, 'devfreq' property name is not proper
on devicetree binding because this name doesn't mean the any h/w attribute.

The devfreq core hand over the right to decide the property name
for getting the devfreq device on devicetree. Each devfreq driver
will decide the property name on devicetree binding and pass
the their own property name to devfreq_get_devfreq_by_phandle function.

Acked-by: Krzysztof Kozlowski 
Signed-off-by: Chanwoo Choi

PM / devfreq: exynos-bus: Add error log when fail to get devfreq-event

2019-12-30T00:59:06+00:00

Adding an error log makes it easier to trace the function's error path.
Because the error code may be rewritten on return, print error code here.

Signed-off-by: Yangtao Li 
Signed-off-by: Chanwoo Choi

PM / devfreq: exynos-bus: Disable devfreq-event device when fails

2019-12-30T00:59:06+00:00

The exynos_bus_profile_init process may fail, but the devfreq event device
remains enabled. Call devfreq_event_disable_edev on the error return path.

Signed-off-by: Yangtao Li 
Signed-off-by: Chanwoo Choi

PM / devfreq: exynos-bus: Reduce goto statements and remove unused headers

2019-12-30T00:59:06+00:00

Improve code readability by changing the goto statements
as well as eliminating a few more goto statements (related to return
paths). Moreover, remove unused header file and adds a missing .

Signed-off-by: Artur Świgoń 
[cw00.choi: Edit patch title and description]
Signed-off-by: Chanwoo Choi

PM / devfreq: exynos-bus: Extract exynos_bus_profile_init_passive()

2019-12-30T00:59:05+00:00

This patch adds a new exynos_bus_profile_init_passive()
extracted from exynos_bus_probe() for devfreq device using passive governor.

Signed-off-by: Artur Świgoń 
[cw00.choi: Edit description to indicate that function is for devfreq device
using passive governor]
Signed-off-by: Chanwoo Choi

PM / devfreq: exynos-bus: Extract exynos_bus_profile_init()

2019-12-30T00:59:05+00:00

This patch adds a new exynos_bus_profile_init() extracted
from exynos_bus_probe() for devfreq device using simple_ondemand governor
like parent devfreq device.

Signed-off-by: Artur Świgoń 
[cw00.choi: Edit description to indicate that new function is
for parent devfreq device]
Signed-off-by: Chanwoo Choi

PM / devfreq: exynos-bus: Convert to use dev_pm_opp_set_rate()

2019-08-25T03:46:48+00:00

Reuse opp core code for setting bus clock and voltage. As a side
effect this allow usage of coupled regulators feature (required
for boards using Exynos5422/5800 SoCs) because dev_pm_opp_set_rate()
uses regulator_set_voltage_triplet() for setting regulator voltage
while the old code used regulator_set_voltage_tol() with fixed
tolerance. This patch also removes no longer needed parsing of DT
property "exynos,voltage-tolerance" (no Exynos devfreq DT node uses
it). After applying changes both functions exynos_bus_passive_target()
and exynos_bus_target() have the same code, so remove
exynos_bus_passive_target(). In exynos_bus_probe() replace it with
exynos_bus_target.

Signed-off-by: Kamil Konieczny 
Acked-by: Chanwoo Choi 
Signed-off-by: MyungJoo Ham

PM / devfreq: exynos-bus: Correct clock enable sequence

2019-08-25T03:46:07+00:00

Regulators should be enabled before clocks to avoid h/w hang. This
require change in exynos_bus_probe() to move exynos_bus_parse_of()
after exynos_bus_parent_parse_of() and change in error handling.
Similar change is needed in exynos_bus_exit() where clock should be
disabled before regulators.

Signed-off-by: Kamil Konieczny 
Acked-by: Chanwoo Choi 
Signed-off-by: MyungJoo Ham

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500

2019-06-19T15:09:55+00:00

Based on 2 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation #

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 4122 file(s).

Signed-off-by: Thomas Gleixner 
Reviewed-by: Enrico Weigelt 
Reviewed-by: Kate Stewart 
Reviewed-by: Allison Randal 
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de
Signed-off-by: Greg Kroah-Hartman