From: Andrew-sh.Cheng <andrew-sh.cheng@mediatek.com>
To: MyungJoo Ham <myungjoo.ham@samsung.com>,
Kyungmin Park <kyungmin.park@samsung.com>,
Chanwoo Choi <cw00.choi@samsung.com>,
"Rob Herring" <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
"Matthias Brugger" <matthias.bgg@gmail.com>,
"Rafael J . Wysocki" <rjw@rjwysocki.net>,
Viresh Kumar <viresh.kumar@linaro.org>,
Nishanth Menon <nm@ti.com>, "Stephen Boyd" <sboyd@kernel.org>,
Liam Girdwood <lgirdwood@gmail.com>,
Mark Brown <broonie@kernel.org>
Cc: devicetree@vger.kernel.org,
"Andrew-sh.Cheng" <andrew-sh.cheng@mediatek.com>,
srv_heupstream@mediatek.com, linux-pm@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH 12/12] devfreq: mediatek: cci devfreq register opp notification for SVS support
Date: Wed, 20 May 2020 11:43:07 +0800 [thread overview]
Message-ID: <20200520034307.20435-13-andrew-sh.cheng@mediatek.com> (raw)
In-Reply-To: <20200520034307.20435-1-andrew-sh.cheng@mediatek.com>
SVS will change the voltage of opp item.
CCI devfreq need to react to change frequency.
Signed-off-by: Andrew-sh.Cheng <andrew-sh.cheng@mediatek.com>
---
drivers/devfreq/mt8183-cci-devfreq.c | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/drivers/devfreq/mt8183-cci-devfreq.c b/drivers/devfreq/mt8183-cci-devfreq.c
index cd7929a83bf8..3e03c1cac1a1 100644
--- a/drivers/devfreq/mt8183-cci-devfreq.c
+++ b/drivers/devfreq/mt8183-cci-devfreq.c
@@ -23,6 +23,7 @@ struct cci_devfreq {
struct clk *cci_clk;
int old_vproc;
unsigned long old_freq;
+ struct notifier_block opp_nb;
};
static int mtk_cci_set_voltage(struct cci_devfreq *cci_df, int vproc)
@@ -91,6 +92,26 @@ static int mtk_cci_devfreq_target(struct device *dev, unsigned long *freq,
return 0;
}
+static int ccidevfreq_opp_notifier(struct notifier_block *nb,
+ unsigned long event, void *data)
+{
+ struct dev_pm_opp *opp = data;
+ struct cci_devfreq *cci_df = container_of(nb, struct cci_devfreq,
+ opp_nb);
+ unsigned long freq, volt;
+
+ if (event == OPP_EVENT_ADJUST_VOLTAGE) {
+ freq = dev_pm_opp_get_freq(opp);
+ /* current opp item is changed */
+ if (freq == cci_df->old_freq) {
+ volt = dev_pm_opp_get_voltage(opp);
+ mtk_cci_set_voltage(cci_df, volt);
+ }
+ }
+
+ return 0;
+}
+
static struct devfreq_dev_profile cci_devfreq_profile = {
.target = mtk_cci_devfreq_target,
};
@@ -100,12 +121,15 @@ static int mtk_cci_devfreq_probe(struct platform_device *pdev)
struct device *cci_dev = &pdev->dev;
struct cci_devfreq *cci_df;
struct devfreq_passive_data *passive_data;
+ struct notifier_block *opp_nb;
int ret;
cci_df = devm_kzalloc(cci_dev, sizeof(*cci_df), GFP_KERNEL);
if (!cci_df)
return -ENOMEM;
+ opp_nb = &cci_df->opp_nb;
+
cci_df->cci_clk = devm_clk_get(cci_dev, "cci_clock");
ret = PTR_ERR_OR_ZERO(cci_df->cci_clk);
if (ret) {
@@ -153,6 +177,9 @@ static int mtk_cci_devfreq_probe(struct platform_device *pdev)
return ret;
}
+ opp_nb->notifier_call = ccidevfreq_opp_notifier;
+ dev_pm_opp_register_notifier(cci_dev, opp_nb);
+
return 0;
}
--
2.12.5
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next prev parent reply other threads:[~2020-05-20 3:52 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20200520034324epcas1p3affbd24bd1f3fe40d51baade07c1abba@epcas1p3.samsung.com>
2020-05-20 3:42 ` [PATCH 00/12] Add cpufreq and cci devfreq for mt8183, and SVS support Andrew-sh.Cheng
2020-05-20 3:42 ` [PATCH 01/12] OPP: Allow required-opps even if the device doesn't have power-domains Andrew-sh.Cheng
2020-05-20 14:54 ` Matthias Brugger
2020-05-21 1:50 ` andrew-sh.cheng
2020-05-20 3:42 ` [PATCH 02/12] OPP: Add function to look up required OPP's for a given OPP Andrew-sh.Cheng
2020-05-20 3:42 ` [PATCH 03/12] OPP: Improve required-opps linking Andrew-sh.Cheng
2020-05-20 3:42 ` [PATCH 04/12] PM / devfreq: Cache OPP table reference in devfreq Andrew-sh.Cheng
2020-05-20 3:43 ` [PATCH 05/12] PM / devfreq: Add required OPPs support to passive governor Andrew-sh.Cheng
2020-05-20 3:43 ` [PATCH 06/12] PM / devfreq: Add cpu based scaling support to passive_governor Andrew-sh.Cheng
2020-05-28 5:03 ` Chanwoo Choi
2020-05-28 6:14 ` Chanwoo Choi
2020-05-28 7:17 ` Chanwoo Choi
2020-06-02 12:23 ` andrew-sh.cheng
2020-06-03 4:12 ` Chanwoo Choi
2020-06-02 11:43 ` andrew-sh.cheng
2020-06-03 4:07 ` Chanwoo Choi
2020-06-17 7:59 ` andrew-sh.cheng
2020-05-20 3:43 ` [PATCH 07/12] cpufreq: mediatek: Enable clock and regulator Andrew-sh.Cheng
2020-05-20 3:43 ` [PATCH 08/12] dt-bindings: devfreq: add compatible for mt8183 cci devfreq Andrew-sh.Cheng
2020-05-28 7:42 ` Chanwoo Choi
2020-06-17 12:05 ` andrew-sh.cheng
2020-05-20 3:43 ` [PATCH 09/12] devfreq: add mediatek " Andrew-sh.Cheng
2020-05-20 12:31 ` Mark Brown
2020-05-21 8:52 ` andrew-sh.cheng
2020-05-28 7:35 ` Chanwoo Choi
2020-05-28 8:00 ` Chanwoo Choi
2020-05-20 3:43 ` [PATCH 10/12] opp: Modify opp API, dev_pm_opp_get_freq(), find freq in opp, even it is disabled Andrew-sh.Cheng
2020-05-20 3:43 ` [PATCH 11/12] cpufreq: mediatek: add opp notification for SVS support Andrew-sh.Cheng
2020-05-20 3:43 ` Andrew-sh.Cheng [this message]
2020-05-20 4:10 ` [PATCH 00/12] Add cpufreq and cci devfreq for mt8183, and " Chanwoo Choi
2020-05-20 5:36 ` andrew-sh.cheng
2020-05-20 6:24 ` Chanwoo Choi
2020-05-20 7:10 ` andrew-sh.cheng
2020-05-20 14:53 ` Matthias Brugger
2020-06-15 7:31 ` Viresh Kumar
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