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From: Sibi Sankar <sibis@codeaurora.org>
To: bjorn.andersson@linaro.org, ulf.hansson@linaro.org,
	mathieu.poirier@linaro.org, robh+dt@kernel.org,
	swboyd@chromium.org
Cc: rjw@rjwysocki.net, agross@kernel.org, ohad@wizery.com,
	linux-arm-msm@vger.kernel.org, linux-remoteproc@vger.kernel.org,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	dianders@chromium.org, rishabhb@codeaurora.org,
	sidgup@codeaurora.org, Sibi Sankar <sibis@codeaurora.org>
Subject: [PATCH 02/12] soc: qcom: aoss: Drop power domain support
Date: Fri, 16 Apr 2021 17:33:48 +0530
Message-ID: <1618574638-5117-3-git-send-email-sibis@codeaurora.org> (raw)
In-Reply-To: <1618574638-5117-1-git-send-email-sibis@codeaurora.org>

The load state resources are expected to follow the life cycle of the
remote processor it tracks. However, modeling load state resources as
power-domains result in them getting turned off during system suspend
and thereby falling out of sync with the remote processors that are still
on. Fix this by replacing load state resource control through the generic
qmp message send interface instead.

Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
---
 drivers/soc/qcom/qcom_aoss.c | 109 ++-----------------------------------------
 1 file changed, 3 insertions(+), 106 deletions(-)

diff --git a/drivers/soc/qcom/qcom_aoss.c b/drivers/soc/qcom/qcom_aoss.c
index 51b32f6d9bdb..f084ea9f6b66 100644
--- a/drivers/soc/qcom/qcom_aoss.c
+++ b/drivers/soc/qcom/qcom_aoss.c
@@ -2,7 +2,6 @@
 /*
  * Copyright (c) 2019, Linaro Ltd
  */
-#include <dt-bindings/power/qcom-aoss-qmp.h>
 #include <linux/clk-provider.h>
 #include <linux/debugfs.h>
 #include <linux/interrupt.h>
@@ -11,7 +10,6 @@
 #include <linux/module.h>
 #include <linux/of_platform.h>
 #include <linux/platform_device.h>
-#include <linux/pm_domain.h>
 #include <linux/thermal.h>
 #include <linux/slab.h>
 #include <linux/soc/qcom/qcom_aoss.h>
@@ -68,7 +66,6 @@ struct qmp_cooling_device {
  * @event: wait_queue for synchronization with the IRQ
  * @tx_lock: provides synchronization between multiple callers of qmp_send()
  * @qdss_clk: QDSS clock hw struct
- * @pd_data: genpd data
  * @cooling_devs: thermal cooling devices
  */
 struct qmp {
@@ -87,20 +84,12 @@ struct qmp {
 	struct mutex tx_lock;
 
 	struct clk_hw qdss_clk;
-	struct genpd_onecell_data pd_data;
 	struct qmp_cooling_device *cooling_devs;
 #if IS_ENABLED(CONFIG_DEBUG_FS)
 	struct dentry *debugfs_file;
 #endif /* CONFIG_DEBUG_FS */
 };
 
-struct qmp_pd {
-	struct qmp *qmp;
-	struct generic_pm_domain pd;
-};
-
-#define to_qmp_pd_resource(res) container_of(res, struct qmp_pd, pd)
-
 static void qmp_kick(struct qmp *qmp)
 {
 	mbox_send_message(qmp->mbox_chan, NULL);
@@ -329,95 +318,6 @@ static void qmp_qdss_clk_remove(struct qmp *qmp)
 	clk_hw_unregister(&qmp->qdss_clk);
 }
 
-static int qmp_pd_power_toggle(struct qmp_pd *res, bool enable)
-{
-	char buf[QMP_MSG_LEN] = {};
-
-	snprintf(buf, sizeof(buf),
-		 "{class: image, res: load_state, name: %s, val: %s}",
-		 res->pd.name, enable ? "on" : "off");
-	return qmp_send(res->qmp, buf, sizeof(buf));
-}
-
-static int qmp_pd_power_on(struct generic_pm_domain *domain)
-{
-	return qmp_pd_power_toggle(to_qmp_pd_resource(domain), true);
-}
-
-static int qmp_pd_power_off(struct generic_pm_domain *domain)
-{
-	return qmp_pd_power_toggle(to_qmp_pd_resource(domain), false);
-}
-
-static const char * const sdm845_resources[] = {
-	[AOSS_QMP_LS_CDSP] = "cdsp",
-	[AOSS_QMP_LS_LPASS] = "adsp",
-	[AOSS_QMP_LS_MODEM] = "modem",
-	[AOSS_QMP_LS_SLPI] = "slpi",
-	[AOSS_QMP_LS_SPSS] = "spss",
-	[AOSS_QMP_LS_VENUS] = "venus",
-};
-
-static int qmp_pd_add(struct qmp *qmp)
-{
-	struct genpd_onecell_data *data = &qmp->pd_data;
-	struct device *dev = qmp->dev;
-	struct qmp_pd *res;
-	size_t num = ARRAY_SIZE(sdm845_resources);
-	int ret;
-	int i;
-
-	res = devm_kcalloc(dev, num, sizeof(*res), GFP_KERNEL);
-	if (!res)
-		return -ENOMEM;
-
-	data->domains = devm_kcalloc(dev, num, sizeof(*data->domains),
-				     GFP_KERNEL);
-	if (!data->domains)
-		return -ENOMEM;
-
-	for (i = 0; i < num; i++) {
-		res[i].qmp = qmp;
-		res[i].pd.name = sdm845_resources[i];
-		res[i].pd.power_on = qmp_pd_power_on;
-		res[i].pd.power_off = qmp_pd_power_off;
-
-		ret = pm_genpd_init(&res[i].pd, NULL, true);
-		if (ret < 0) {
-			dev_err(dev, "failed to init genpd\n");
-			goto unroll_genpds;
-		}
-
-		data->domains[i] = &res[i].pd;
-	}
-
-	data->num_domains = i;
-
-	ret = of_genpd_add_provider_onecell(dev->of_node, data);
-	if (ret < 0)
-		goto unroll_genpds;
-
-	return 0;
-
-unroll_genpds:
-	for (i--; i >= 0; i--)
-		pm_genpd_remove(data->domains[i]);
-
-	return ret;
-}
-
-static void qmp_pd_remove(struct qmp *qmp)
-{
-	struct genpd_onecell_data *data = &qmp->pd_data;
-	struct device *dev = qmp->dev;
-	int i;
-
-	of_genpd_del_provider(dev->of_node);
-
-	for (i = 0; i < data->num_domains; i++)
-		pm_genpd_remove(data->domains[i]);
-}
-
 static int qmp_cdev_get_max_state(struct thermal_cooling_device *cdev,
 				  unsigned long *state)
 {
@@ -636,13 +536,11 @@ static int qmp_probe(struct platform_device *pdev)
 	if (ret)
 		goto err_close_qmp;
 
-	ret = qmp_pd_add(qmp);
-	if (ret)
-		goto err_remove_qdss_clk;
-
 	ret = qmp_cooling_devices_register(qmp);
-	if (ret)
+	if (ret) {
 		dev_err(&pdev->dev, "failed to register aoss cooling devices\n");
+		goto err_remove_qdss_clk;
+	}
 
 	platform_set_drvdata(pdev, qmp);
 
@@ -674,7 +572,6 @@ static int qmp_remove(struct platform_device *pdev)
 #endif /* CONFIG_DEBUG_FS */
 
 	qmp_qdss_clk_remove(qmp);
-	qmp_pd_remove(qmp);
 	qmp_cooling_devices_remove(qmp);
 
 	qmp_close(qmp);
-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project


  parent reply index

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-16 12:03 [PATCH 00/12] Use qmp_send to update co-processor load state Sibi Sankar
2021-04-16 12:03 ` [PATCH 01/12] dt-bindings: soc: qcom: aoss: Drop power-domain bindings Sibi Sankar
2021-04-18  1:54   ` Stephen Boyd
2021-04-30 14:59   ` Rob Herring
2021-04-16 12:03 ` Sibi Sankar [this message]
2021-04-18  2:01   ` [PATCH 02/12] soc: qcom: aoss: Drop power domain support Stephen Boyd
2021-04-27  6:25     ` Sibi Sankar
2021-04-16 12:03 ` [PATCH 03/12] dt-bindings: remoteproc: qcom: pas: Add QMP bindings Sibi Sankar
2021-04-18  1:55   ` Stephen Boyd
2021-04-30 15:02   ` Rob Herring
2021-04-16 12:03 ` [PATCH 04/12] dt-bindings: remoteproc: qcom: " Sibi Sankar
2021-04-18  1:55   ` Stephen Boyd
2021-04-30 15:02   ` Rob Herring
2021-04-16 12:03 ` [PATCH 05/12] remoteproc: qcom: q6v5: Use qmp_send to update co-processor load state Sibi Sankar
2021-04-16 12:03 ` [PATCH 06/12] arm64: dts: qcom: sc7180: Use QMP binding to control " Sibi Sankar
2021-04-18  2:02   ` Stephen Boyd
2021-04-16 12:03 ` [PATCH 07/12] arm64: dts: qcom: sc7280: " Sibi Sankar
2021-04-18  2:02   ` Stephen Boyd
2021-04-16 12:03 ` [PATCH 08/12] arm64: dts: qcom: sdm845: " Sibi Sankar
2021-04-18  2:02   ` Stephen Boyd
2021-04-16 12:03 ` [PATCH 09/12] arm64: dts: qcom: sm8150: " Sibi Sankar
2021-04-18  2:02   ` Stephen Boyd
2021-04-16 12:03 ` [PATCH 10/12] arm64: dts: qcom: sm8250: " Sibi Sankar
2021-04-18  2:03   ` Stephen Boyd
2021-04-16 12:03 ` [PATCH 11/12] arm64: dts: qcom: sm8350: " Sibi Sankar
2021-04-18  2:03   ` Stephen Boyd
2021-04-16 12:03 ` [PATCH 12/12] dt-bindings: soc: qcom: aoss: Delete unused power-domain definitions Sibi Sankar
2021-04-18  2:03   ` Stephen Boyd
2021-04-30 15:02   ` Rob Herring

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