linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Thara Gopinath <thara.gopinath@linaro.org>
To: edubezval@gmail.com, rui.zhang@intel.com, ulf.hansson@linaro.org,
	daniel.lezcano@linaro.org, bjorn.andersson@linaro.org,
	agross@kernel.org
Cc: amit.kucheria@verdurent.com, mark.rutland@arm.com,
	rjw@rjwysocki.net, linux-pm@vger.kernel.org,
	devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: [Patch v4 5/7] soc: qcom: Extend RPMh power controller driver to register warming devices.
Date: Wed, 20 Nov 2019 07:56:31 -0500	[thread overview]
Message-ID: <1574254593-16078-6-git-send-email-thara.gopinath@linaro.org> (raw)
In-Reply-To: <1574254593-16078-1-git-send-email-thara.gopinath@linaro.org>

RPMh power control hosts power domains that can be used as
thermal warming devices. Register these power domains
with the generic power domain warming device thermal framework.

Signed-off-by: Thara Gopinath <thara.gopinath@linaro.org>
---
v3->v4:
	- Introduce a boolean value is_warming_dev in rpmhpd structure to
	  indicate if a generic power domain can be used as a warming
	  device or not.With this change, device tree no longer has to
	  specify which power domain inside the rpmh power domain provider
	  is a warming device.
	- Move registering of warming devices into a late initcall to
	  ensure that warming devices are registerd after thermal
	  framework is initialized.
 
 drivers/soc/qcom/rpmhpd.c | 38 +++++++++++++++++++++++++++++++++++++-
 1 file changed, 37 insertions(+), 1 deletion(-)

diff --git a/drivers/soc/qcom/rpmhpd.c b/drivers/soc/qcom/rpmhpd.c
index 9d37534..5666d1f 100644
--- a/drivers/soc/qcom/rpmhpd.c
+++ b/drivers/soc/qcom/rpmhpd.c
@@ -11,6 +11,7 @@
 #include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/pm_opp.h>
+#include <linux/pwr_domain_warming.h>
 #include <soc/qcom/cmd-db.h>
 #include <soc/qcom/rpmh.h>
 #include <dt-bindings/power/qcom-rpmpd.h>
@@ -48,6 +49,7 @@ struct rpmhpd {
 	bool		enabled;
 	const char	*res_name;
 	u32		addr;
+	bool		is_warming_dev;
 };
 
 struct rpmhpd_desc {
@@ -55,6 +57,8 @@ struct rpmhpd_desc {
 	size_t num_pds;
 };
 
+const struct rpmhpd_desc *global_desc;
+
 static DEFINE_MUTEX(rpmhpd_lock);
 
 /* SDM845 RPMH powerdomains */
@@ -89,6 +93,7 @@ static struct rpmhpd sdm845_mx = {
 	.pd = { .name = "mx", },
 	.peer = &sdm845_mx_ao,
 	.res_name = "mx.lvl",
+	.is_warming_dev = true,
 };
 
 static struct rpmhpd sdm845_mx_ao = {
@@ -396,7 +401,14 @@ static int rpmhpd_probe(struct platform_device *pdev)
 					       &rpmhpds[i]->pd);
 	}
 
-	return of_genpd_add_provider_onecell(pdev->dev.of_node, data);
+	ret = of_genpd_add_provider_onecell(pdev->dev.of_node, data);
+
+	if (ret)
+		return ret;
+
+	global_desc = desc;
+
+	return 0;
 }
 
 static struct platform_driver rpmhpd_driver = {
@@ -413,3 +425,27 @@ static int __init rpmhpd_init(void)
 	return platform_driver_register(&rpmhpd_driver);
 }
 core_initcall(rpmhpd_init);
+
+static int __init rpmhpd_init_warming_device(void)
+{
+	size_t num_pds;
+	struct rpmhpd **rpmhpds;
+	int i;
+
+	if (!global_desc)
+		return -EINVAL;
+
+	rpmhpds = global_desc->rpmhpds;
+	num_pds = global_desc->num_pds;
+
+	if (!of_find_property(rpmhpds[0]->dev->of_node, "#cooling-cells", NULL))
+		return 0;
+
+	for (i = 0; i < num_pds; i++)
+		if (rpmhpds[i]->is_warming_dev)
+			pwr_domain_warming_register(rpmhpds[i]->dev,
+						    rpmhpds[i]->res_name, i);
+
+	return 0;
+}
+late_initcall(rpmhpd_init_warming_device);
-- 
2.1.4


  parent reply	other threads:[~2019-11-20 12:57 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-20 12:56 [Patch v4 0/7] Introduce Power domain based warming device driver Thara Gopinath
2019-11-20 12:56 ` [Patch v4 1/7] PM/Domains: Add support for retrieving genpd performance states information Thara Gopinath
2019-11-20 12:56 ` [Patch v4 2/7] soc: qcom: rpmhpd: Introduce function to retrieve power domain performance state count Thara Gopinath
2020-02-04 16:10   ` Ulf Hansson
2019-11-20 12:56 ` [Patch v4 3/7] thermal: core: Allow cooling devices to register a parent Thara Gopinath
2020-02-04 16:22   ` Ulf Hansson
2019-11-20 12:56 ` [Patch v4 4/7] thermal: Add generic power domain warming device driver Thara Gopinath
2020-02-04 16:54   ` Ulf Hansson
2020-03-01 23:00     ` Thara Gopinath
2020-03-13 13:13       ` Ulf Hansson
2020-03-13 15:02         ` Thara Gopinath
2019-11-20 12:56 ` Thara Gopinath [this message]
2020-02-04 17:40   ` [Patch v4 5/7] soc: qcom: Extend RPMh power controller driver to register warming devices Ulf Hansson
2020-03-01 23:36     ` Thara Gopinath
2019-11-20 12:56 ` [Patch v4 6/7] dt-bindings: soc: qcom: Extend RPMh power controller binding to describe thermal warming device Thara Gopinath
2019-11-22 23:59   ` Rob Herring
2020-02-04 17:41   ` Ulf Hansson
2020-03-01 23:37     ` Thara Gopinath
2019-11-20 12:56 ` [Patch v4 7/7] arm64: dts: qcom: Indicate rpmhpd hosts a power domain that can be used as a " Thara Gopinath
2020-02-04 17:40   ` Ulf Hansson
2020-01-09 15:02 ` [Patch v4 0/7] Introduce Power domain based warming device driver Thara Gopinath

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1574254593-16078-6-git-send-email-thara.gopinath@linaro.org \
    --to=thara.gopinath@linaro.org \
    --cc=agross@kernel.org \
    --cc=amit.kucheria@verdurent.com \
    --cc=bjorn.andersson@linaro.org \
    --cc=daniel.lezcano@linaro.org \
    --cc=devicetree@vger.kernel.org \
    --cc=edubezval@gmail.com \
    --cc=linux-arm-msm@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-pm@vger.kernel.org \
    --cc=mark.rutland@arm.com \
    --cc=rjw@rjwysocki.net \
    --cc=rui.zhang@intel.com \
    --cc=ulf.hansson@linaro.org \
    --subject='Re: [Patch v4 5/7] soc: qcom: Extend RPMh power controller driver to register warming devices.' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).