A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-09 21:59:12 -04:00
Code Issues Projects Releases Packages Wiki Activity

devfreq: devfreq_simple_dev: Add support for preparing device clock

Browse source 
For certain implementation, device clock needs to be prepared before
rate voting taking effect. Add support for preparing device clock
during initialization.

Change-Id: Ib22e83952187118342ff2546d4c79d3970a288f9
Signed-off-by: Junjie Wu <junjiew@codeaurora.org>
[avajid@codeaurora.org: made minor styling changes]
Signed-off-by: Amir Vajid <avajid@codeaurora.org>
This commit is contained in:
Junjie Wu 2019-01-16 18:47:51 -08:00 • committed by Amir Vajid
commit f4c2ac968a
1 changed files with 15 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

18
drivers/devfreq/devfreq_simple_dev.c
View file

@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2014, 2019, The Linux Foundation. All rights reserved.
* Copyright (c) 2014-2015, 2019, The Linux Foundation. All rights reserved.
*/
#define pr_fmt(fmt) "devfreq-simple-dev: " fmt
@ -147,11 +147,23 @@ static int devfreq_clock_probe(struct platform_device *pdev)
if (of_property_read_string(dev->of_node, "governor", &gov_name))
gov_name = "performance";
if (of_property_read_bool(dev->of_node, "qcom,prepare-clk")) {
ret = clk_prepare(d->clk);
if (ret < 0)
return ret;
}
d->df = devfreq_add_device(dev, p, gov_name, NULL);
if (IS_ERR(d->df))
return PTR_ERR_OR_ZERO(d->df);
if (IS_ERR(d->df)) {
ret = PTR_ERR_OR_ZERO(d->df);
goto add_err;
}
return 0;
add_err:
if (of_property_read_bool(dev->of_node, "qcom,prepare-clk"))
clk_unprepare(d->clk);
return ret;
}
static int devfreq_clock_remove(struct platform_device *pdev)