linux-kernel - [PATCH v10 17/33] remoteproc: k3: Refactor rproc_release() implementation into common driver

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Message-ID: <20250417182001.3903905-18-b-padhi@ti.com>
Date: Thu, 17 Apr 2025 23:49:45 +0530
From: Beleswar Padhi <b-padhi@...com>
To: <andersson@...nel.org>, <mathieu.poirier@...aro.org>
CC: <afd@...com>, <hnagalla@...com>, <u-kumar1@...com>, <jm@...com>,
        <jan.kiszka@...mens.com>, <christophe.jaillet@...adoo.fr>,
        <jkangas@...hat.com>, <eballetbo@...hat.com>, <b-padhi@...com>,
        <linux-remoteproc@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH v10 17/33] remoteproc: k3: Refactor rproc_release() implementation into common driver

The rproc_release() implementations in TI K3 DSP and M4 remoteproc
drivers deassert reset in the same way. Refactor the above function into
the ti_k3_common.c driver as k3_rproc_release() and use it throughout
DSP and M4 drivers for releasing the reset from the remote processor.

Signed-off-by: Beleswar Padhi <b-padhi@...com>
---
v10: Changelog:
1. Split [v9 13/26] into [v10 16/33] and [v10 17/33] patches. 

Link to v9:
https://lore.kernel.org/all/20250317120622.1746415-14-b-padhi@ti.com/

 drivers/remoteproc/ti_k3_common.c         | 27 ++++++++++++++++++++++
 drivers/remoteproc/ti_k3_common.h         |  1 +
 drivers/remoteproc/ti_k3_dsp_remoteproc.c | 28 +----------------------
 drivers/remoteproc/ti_k3_m4_remoteproc.c  |  8 +++----
 4 files changed, 32 insertions(+), 32 deletions(-)

diff --git a/drivers/remoteproc/ti_k3_common.c b/drivers/remoteproc/ti_k3_common.c
index 19bb6c337af77..011a871860754 100644
--- a/drivers/remoteproc/ti_k3_common.c
+++ b/drivers/remoteproc/ti_k3_common.c
@@ -130,5 +130,32 @@ int k3_rproc_reset(struct k3_rproc *kproc)
 }
 EXPORT_SYMBOL_GPL(k3_rproc_reset);
 
+/* Release the remote processor from reset */
+int k3_rproc_release(struct k3_rproc *kproc)
+{
+	struct device *dev = kproc->dev;
+	int ret;
+
+	if (kproc->data->uses_lreset) {
+		ret = reset_control_deassert(kproc->reset);
+		if (ret) {
+			dev_err(dev, "local-reset deassert failed, (%pe)\n", ERR_PTR(ret));
+			if (kproc->ti_sci->ops.dev_ops.put_device(kproc->ti_sci,
+								  kproc->ti_sci_id))
+				dev_warn(dev, "module-reset assert back failed\n");
+		}
+
+		return ret;
+	}
+
+	ret = kproc->ti_sci->ops.dev_ops.get_device(kproc->ti_sci,
+						    kproc->ti_sci_id);
+	if (ret)
+		dev_err(dev, "module-reset deassert failed (%pe)\n", ERR_PTR(ret));
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(k3_rproc_release);
+
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("TI K3 common Remoteproc code");
diff --git a/drivers/remoteproc/ti_k3_common.h b/drivers/remoteproc/ti_k3_common.h
index f3400fc774766..c1af39cd288c1 100644
--- a/drivers/remoteproc/ti_k3_common.h
+++ b/drivers/remoteproc/ti_k3_common.h
@@ -91,4 +91,5 @@ struct k3_rproc {
 void k3_rproc_mbox_callback(struct mbox_client *client, void *data);
 void k3_rproc_kick(struct rproc *rproc, int vqid);
 int k3_rproc_reset(struct k3_rproc *kproc);
+int k3_rproc_release(struct k3_rproc *kproc);
 #endif /* REMOTEPROC_TI_K3_COMMON_H */
diff --git a/drivers/remoteproc/ti_k3_dsp_remoteproc.c b/drivers/remoteproc/ti_k3_dsp_remoteproc.c
index b10b35326bd6b..577dcd65093a9 100644
--- a/drivers/remoteproc/ti_k3_dsp_remoteproc.c
+++ b/drivers/remoteproc/ti_k3_dsp_remoteproc.c
@@ -24,32 +24,6 @@
 
 #define KEYSTONE_RPROC_LOCAL_ADDRESS_MASK	(SZ_16M - 1)
 
-/* Release the DSP processor from reset */
-static int k3_dsp_rproc_release(struct k3_rproc *kproc)
-{
-	struct device *dev = kproc->dev;
-	int ret;
-
-	if (kproc->data->uses_lreset) {
-		ret = reset_control_deassert(kproc->reset);
-		if (ret) {
-			dev_err(dev, "local-reset deassert failed, (%pe)\n", ERR_PTR(ret));
-			if (kproc->ti_sci->ops.dev_ops.put_device(kproc->ti_sci,
-								  kproc->ti_sci_id))
-				dev_warn(dev, "module-reset assert back failed\n");
-		}
-
-		return ret;
-	}
-
-	ret = kproc->ti_sci->ops.dev_ops.get_device(kproc->ti_sci,
-						    kproc->ti_sci_id);
-	if (ret)
-		dev_err(dev, "module-reset deassert failed (%pe)\n", ERR_PTR(ret));
-
-	return ret;
-}
-
 static int k3_dsp_rproc_request_mbox(struct rproc *rproc)
 {
 	struct k3_rproc *kproc = rproc->priv;
@@ -158,7 +132,7 @@ static int k3_dsp_rproc_start(struct rproc *rproc)
 	if (ret)
 		return ret;
 
-	ret = k3_dsp_rproc_release(kproc);
+	ret = k3_rproc_release(kproc);
 	if (ret)
 		return ret;
 
diff --git a/drivers/remoteproc/ti_k3_m4_remoteproc.c b/drivers/remoteproc/ti_k3_m4_remoteproc.c
index 7d5b75be2e4f8..a8a5211bf0c7f 100644
--- a/drivers/remoteproc/ti_k3_m4_remoteproc.c
+++ b/drivers/remoteproc/ti_k3_m4_remoteproc.c
@@ -354,13 +354,11 @@ static int k3_m4_rproc_start(struct rproc *rproc)
 	if (ret)
 		return ret;
 
-	ret = reset_control_deassert(kproc->reset);
-	if (ret) {
+	ret = k3_rproc_release(kproc);
+	if (ret)
 		dev_err(dev, "local-reset deassert failed, ret = %d\n", ret);
-		return ret;
-	}
 
-	return 0;
+	return ret;
 }
 
 /*
-- 
2.34.1