linux.git/drivers/devfreq, branch v5.13.4 Clone of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git PM / devfreq: passive: Fix get_target_freq when not using required-opp 2021-07-14T15:06:53+00:00 Chanwoo Choi cw00.choi@samsung.com 2021-06-17T06:05:43+00:00 c4b228181982a71d1250a54d2b80bc94d86c9bc6 [ Upstream commit 8c37d01e1a86073d15ea7084390fba58d9a1665f ] The 86ad9a24f21e ("PM / devfreq: Add required OPPs support to passive governor") supported the required-opp property for using devfreq passive governor. But, 86ad9a24f21e has caused the problem on use-case when required-opp is not used such as exynos-bus.c devfreq driver. So that fix the get_target_freq of passive governor for supporting the case of when required-opp is not used. Fixes: 86ad9a24f21e ("PM / devfreq: Add required OPPs support to passive governor") Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit 8c37d01e1a86073d15ea7084390fba58d9a1665f ]

The 86ad9a24f21e ("PM / devfreq: Add required OPPs support to passive governor")
supported the required-opp property for using devfreq passive governor.
But, 86ad9a24f21e has caused the problem on use-case when required-opp
is not used such as exynos-bus.c devfreq driver. So that fix the
get_target_freq of passive governor for supporting the case of when
required-opp is not used.

Fixes: 86ad9a24f21e ("PM / devfreq: Add required OPPs support to passive governor")
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
PM / devfreq: Add missing error code in devfreq_add_device() 2021-07-14T15:06:50+00:00 YueHaibing yuehaibing@huawei.com 2021-05-14T06:48:43+00:00 7e95c52cb786b34ce32470809636a8c436b3c309 [ Upstream commit 18b380ed61f892ed06838d1f1a5124d966292ed3 ] Set err code in the error path before jumping to the end of the function. Fixes: 4dc3bab8687f ("PM / devfreq: Add support delayed timer for polling mode") Signed-off-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit 18b380ed61f892ed06838d1f1a5124d966292ed3 ]

Set err code in the error path before jumping to the end of the function.

Fixes: 4dc3bab8687f ("PM / devfreq: Add support delayed timer for polling mode")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
PM / devfreq: imx8m-ddrc: Remove unneeded of_match_ptr() 2021-04-08T04:14:51+00:00 Fabio Estevam festevam@gmail.com 2021-03-29T12:24:25+00:00 0a7dc8318c2817fb33dc50946f7ca6e0ff28f036 i.MX is a DT-only platform, so of_match_ptr() can be safely removed. Remove the unneeded of_match_ptr(). Signed-off-by: Fabio Estevam <festevam@gmail.com> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> 
i.MX is a DT-only platform, so of_match_ptr() can be safely
removed.

Remove the unneeded of_match_ptr().

Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
PM / devfreq: imx-bus: Remove unneeded of_match_ptr() 2021-04-08T04:14:51+00:00 Fabio Estevam festevam@gmail.com 2021-03-29T12:24:24+00:00 ca948312e00056124e8026478a36d3b7baeb0b22 i.MX is a DT-only platform, so of_match_ptr() can be safely removed. Remove the unneeded of_match_ptr(). Signed-off-by: Fabio Estevam <festevam@gmail.com> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> 
i.MX is a DT-only platform, so of_match_ptr() can be safely
removed.

Remove the unneeded of_match_ptr().

Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
PM / devfreq: imx8m-ddrc: Remove imx8m_ddrc_get_dev_status 2021-04-08T04:14:51+00:00 Dong Aisheng aisheng.dong@nxp.com 2021-03-23T07:20:11+00:00 6c4b264c70adcec0d4e2cdb4573ee8e4526b584d Current driver actually does not support simple ondemand governor as it's unable to provide device load information. So removing the unnecessary callback to avoid confusing. Right now the driver is using userspace governor by default. polling_ms was also dropped as it's not needed for non-ondemand governor. Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> 
Current driver actually does not support simple ondemand governor
as it's unable to provide device load information. So removing
the unnecessary callback to avoid confusing.
Right now the driver is using userspace governor by default.

polling_ms was also dropped as it's not needed for non-ondemand
governor.

Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
PM / devfreq: Remove the invalid description for get_target_freq 2021-04-08T04:14:51+00:00 Dong Aisheng aisheng.dong@nxp.com 2021-03-23T07:20:09+00:00 05f15314f0895bf7dfee67142cd3f7aca3414658 First of all, no_central_polling was removed since commit 7e6fdd4bad03 ("PM / devfreq: Core updates to support devices which can idle") Secondly, get_target_freq() is not only called only with update_devfreq() notified by OPP now, but also min/max freq qos notifier. So remove this invalid description now to avoid confusing. Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> 
First of all, no_central_polling was removed since
commit 7e6fdd4bad03 ("PM / devfreq: Core updates to support devices
which can idle")
Secondly, get_target_freq() is not only called only with update_devfreq()
notified by OPP now, but also min/max freq qos notifier.

So remove this invalid description now to avoid confusing.

Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
PM / devfreq: Check get_dev_status in devfreq_update_stats 2021-04-08T04:14:51+00:00 Dong Aisheng aisheng.dong@nxp.com 2021-03-09T12:58:38+00:00 b19e13463a1054b1b51f4314a1a53da02aed776f Check .get_dev_status() in devfreq_update_stats in case it's abused when a device does not provide it. Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> 
Check .get_dev_status() in devfreq_update_stats in case it's abused
when a device does not provide it.

Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
PM / devfreq: Fix the wrong set_freq path for userspace governor in Kconfig 2021-04-08T04:14:50+00:00 Dong Aisheng aisheng.dong@nxp.com 2021-03-09T12:58:33+00:00 5f104f9fc1bb1423058b98b8a64b01af70f44547 Fix the wrong set_freq path for userspace governor in Kconfig. Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> 
Fix the wrong set_freq path for userspace governor in Kconfig.

Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
PM / devfreq: rk3399_dmc: Simplify with dev_err_probe() 2021-04-08T04:14:50+00:00 Krzysztof Kozlowski krzk@kernel.org 2021-02-28T06:52:32+00:00 fbf821ec632b4bb93ec9224c1e75c36b01ad16ed Common pattern of handling deferred probe can be simplified with dev_err_probe(). Less code and the error value gets printed. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> 
Common pattern of handling deferred probe can be simplified with
dev_err_probe().  Less code and the error value gets printed.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
PM / devfreq: Use more accurate returned new_freq as resume_freq 2021-04-08T04:14:45+00:00 Dong Aisheng aisheng.dong@nxp.com 2021-03-23T07:20:08+00:00 62453f1ba5d5def9d58e140a50f3f168f028da38 Use the more accurate returned new_freq as resume_freq. It's the same as how devfreq->previous_freq was updated. Fixes: 83f8ca45afbf0 ("PM / devfreq: add support for suspend/resume of a devfreq device") Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> 
Use the more accurate returned new_freq as resume_freq.
It's the same as how devfreq->previous_freq was updated.

Fixes: 83f8ca45afbf0 ("PM / devfreq: add support for suspend/resume of a devfreq device")
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>