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Message-Id: <20240105160103.183092-4-ulf.hansson@linaro.org>
Date: Fri, 5 Jan 2024 17:01:01 +0100
From: Ulf Hansson <ulf.hansson@...aro.org>
To: "Rafael J . Wysocki" <rafael@...nel.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Viresh Kumar <viresh.kumar@...aro.org>,
linux-pm@...r.kernel.org
Cc: Ulf Hansson <ulf.hansson@...aro.org>,
Sudeep Holla <sudeep.holla@....com>,
Kevin Hilman <khilman@...nel.org>,
Konrad Dybcio <konrad.dybcio@...aro.org>,
Bjorn Andersson <andersson@...nel.org>,
Nikunj Kela <nkela@...cinc.com>,
Prasad Sodagudi <psodagud@...cinc.com>,
Stephan Gerhold <stephan@...hold.net>,
Ben Horgan <Ben.Horgan@....com>,
linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
linux-remoteproc@...r.kernel.org,
linux-media@...r.kernel.org,
Mathieu Poirier <mathieu.poirier@...aro.org>,
Shawn Guo <shawnguo@...nel.org>,
Sascha Hauer <s.hauer@...gutronix.de>,
Iuliana Prodan <iuliana.prodan@....com>,
Daniel Baluta <daniel.baluta@....com>
Subject: [PATCH v2 3/5] remoteproc: imx_rproc: Convert to dev_pm_domain_attach|detach_list()
Let's avoid the boilerplate code to manage the multiple PM domain case, by
converting into using dev_pm_domain_attach|detach_list().
Cc: Mathieu Poirier <mathieu.poirier@...aro.org>
Cc: Bjorn Andersson <andersson@...nel.org>
Cc: Shawn Guo <shawnguo@...nel.org>
Cc: Sascha Hauer <s.hauer@...gutronix.de>
Cc: Iuliana Prodan <iuliana.prodan@....com>
Cc: Daniel Baluta <daniel.baluta@....com>
Cc: <linux-remoteproc@...r.kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@...aro.org>
---
Changes in v2:
- None.
Iuliana/Daniel I am ccing you to request help with test/review of this change.
Note that, you will need patch 1/5 in the series too, to be able to test this.
Kind regards
Ulf Hansson
---
drivers/remoteproc/imx_rproc.c | 73 +++++-----------------------------
1 file changed, 9 insertions(+), 64 deletions(-)
diff --git a/drivers/remoteproc/imx_rproc.c b/drivers/remoteproc/imx_rproc.c
index 8bb293b9f327..3161f14442bc 100644
--- a/drivers/remoteproc/imx_rproc.c
+++ b/drivers/remoteproc/imx_rproc.c
@@ -92,7 +92,6 @@ struct imx_rproc_mem {
static int imx_rproc_xtr_mbox_init(struct rproc *rproc);
static void imx_rproc_free_mbox(struct rproc *rproc);
-static int imx_rproc_detach_pd(struct rproc *rproc);
struct imx_rproc {
struct device *dev;
@@ -113,10 +112,8 @@ struct imx_rproc {
u32 rproc_pt; /* partition id */
u32 rsrc_id; /* resource id */
u32 entry; /* cpu start address */
- int num_pd;
u32 core_index;
- struct device **pd_dev;
- struct device_link **pd_dev_link;
+ struct dev_pm_domain_list *pd_list;
};
static const struct imx_rproc_att imx_rproc_att_imx93[] = {
@@ -853,7 +850,7 @@ static void imx_rproc_put_scu(struct rproc *rproc)
return;
if (imx_sc_rm_is_resource_owned(priv->ipc_handle, priv->rsrc_id)) {
- imx_rproc_detach_pd(rproc);
+ dev_pm_domain_detach_list(priv->pd_list);
return;
}
@@ -880,72 +877,20 @@ static int imx_rproc_partition_notify(struct notifier_block *nb,
static int imx_rproc_attach_pd(struct imx_rproc *priv)
{
struct device *dev = priv->dev;
- int ret, i;
-
- /*
- * If there is only one power-domain entry, the platform driver framework
- * will handle it, no need handle it in this driver.
- */
- priv->num_pd = of_count_phandle_with_args(dev->of_node, "power-domains",
- "#power-domain-cells");
- if (priv->num_pd <= 1)
- return 0;
-
- priv->pd_dev = devm_kmalloc_array(dev, priv->num_pd, sizeof(*priv->pd_dev), GFP_KERNEL);
- if (!priv->pd_dev)
- return -ENOMEM;
-
- priv->pd_dev_link = devm_kmalloc_array(dev, priv->num_pd, sizeof(*priv->pd_dev_link),
- GFP_KERNEL);
-
- if (!priv->pd_dev_link)
- return -ENOMEM;
-
- for (i = 0; i < priv->num_pd; i++) {
- priv->pd_dev[i] = dev_pm_domain_attach_by_id(dev, i);
- if (IS_ERR(priv->pd_dev[i])) {
- ret = PTR_ERR(priv->pd_dev[i]);
- goto detach_pd;
- }
-
- priv->pd_dev_link[i] = device_link_add(dev, priv->pd_dev[i], DL_FLAG_STATELESS |
- DL_FLAG_PM_RUNTIME | DL_FLAG_RPM_ACTIVE);
- if (!priv->pd_dev_link[i]) {
- dev_pm_domain_detach(priv->pd_dev[i], false);
- ret = -EINVAL;
- goto detach_pd;
- }
- }
-
- return 0;
-
-detach_pd:
- while (--i >= 0) {
- device_link_del(priv->pd_dev_link[i]);
- dev_pm_domain_detach(priv->pd_dev[i], false);
- }
-
- return ret;
-}
-
-static int imx_rproc_detach_pd(struct rproc *rproc)
-{
- struct imx_rproc *priv = rproc->priv;
- int i;
+ int ret;
+ struct dev_pm_domain_attach_data pd_data = {
+ .pd_flags = PD_FLAG_DEV_LINK_ON,
+ };
/*
* If there is only one power-domain entry, the platform driver framework
* will handle it, no need handle it in this driver.
*/
- if (priv->num_pd <= 1)
+ if (dev->pm_domain)
return 0;
- for (i = 0; i < priv->num_pd; i++) {
- device_link_del(priv->pd_dev_link[i]);
- dev_pm_domain_detach(priv->pd_dev[i], false);
- }
-
- return 0;
+ ret = dev_pm_domain_attach_list(dev, &pd_data, &priv->pd_list);
+ return ret < 0 ? ret : 0;
}
static int imx_rproc_detect_mode(struct imx_rproc *priv)
--
2.34.1
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