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Message-ID: <20250317120622.1746415-20-b-padhi@ti.com>
Date: Mon, 17 Mar 2025 17:36:15 +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 v9 19/26] remoteproc: k3: Refactor .attach rproc ops into common driver
The .attach rproc ops implementations in TI K3 R5, DSP and M4 drivers
are NOPs. Refactor the implementations into ti_k3_common.c driver
as k3_rproc_attach() and align R5, DSP and M4 drivers to register this
common function as .attach ops.
Signed-off-by: Beleswar Padhi <b-padhi@...com>
---
drivers/remoteproc/ti_k3_common.c | 12 ++++++++++++
drivers/remoteproc/ti_k3_common.h | 1 +
drivers/remoteproc/ti_k3_dsp_remoteproc.c | 13 +------------
drivers/remoteproc/ti_k3_m4_remoteproc.c | 14 +-------------
drivers/remoteproc/ti_k3_r5_remoteproc.c | 13 +------------
5 files changed, 16 insertions(+), 37 deletions(-)
diff --git a/drivers/remoteproc/ti_k3_common.c b/drivers/remoteproc/ti_k3_common.c
index 93d793e0899f..9e80d4da0d43 100644
--- a/drivers/remoteproc/ti_k3_common.c
+++ b/drivers/remoteproc/ti_k3_common.c
@@ -297,5 +297,17 @@ int k3_rproc_stop(struct rproc *rproc)
}
EXPORT_SYMBOL_GPL(k3_rproc_stop);
+/*
+ * Attach to a running remote processor (IPC-only mode)
+ *
+ * The rproc attach callback is a NOP. The remote processor is already booted,
+ * and all required resources have been acquired during probe routine, so there
+ * is no need to issue any TI-SCI commands to boot the remote cores in IPC-only
+ * mode. This callback is invoked only in IPC-only mode and exists because
+ * rproc_validate() checks for its existence.
+ */
+int k3_rproc_attach(struct rproc *rproc) { return 0; }
+EXPORT_SYMBOL_GPL(k3_rproc_attach);
+
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 0162757f024c..93f41ee41505 100644
--- a/drivers/remoteproc/ti_k3_common.h
+++ b/drivers/remoteproc/ti_k3_common.h
@@ -97,4 +97,5 @@ int k3_rproc_prepare(struct rproc *rproc);
int k3_rproc_unprepare(struct rproc *rproc);
int k3_rproc_start(struct rproc *rproc);
int k3_rproc_stop(struct rproc *rproc);
+int k3_rproc_attach(struct rproc *rproc);
#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 c5fe2b097a6f..d7ae4b202f92 100644
--- a/drivers/remoteproc/ti_k3_dsp_remoteproc.c
+++ b/drivers/remoteproc/ti_k3_dsp_remoteproc.c
@@ -58,17 +58,6 @@ static int k3_dsp_rproc_start(struct rproc *rproc)
return 0;
}
-/*
- * Attach to a running DSP remote processor (IPC-only mode)
- *
- * This rproc attach callback is a NOP. The remote processor is already booted,
- * and all required resources have been acquired during probe routine, so there
- * is no need to issue any TI-SCI commands to boot the DSP core. This callback
- * is invoked only in IPC-only mode and exists because rproc_validate() checks
- * for its existence.
- */
-static int k3_dsp_rproc_attach(struct rproc *rproc) { return 0; }
-
/*
* Detach from a running DSP remote processor (IPC-only mode)
*
@@ -172,6 +161,7 @@ static void *k3_dsp_rproc_da_to_va(struct rproc *rproc, u64 da, size_t len, bool
static const struct rproc_ops k3_dsp_rproc_ops = {
.start = k3_dsp_rproc_start,
.stop = k3_rproc_stop,
+ .attach = k3_rproc_attach,
.kick = k3_rproc_kick,
.da_to_va = k3_dsp_rproc_da_to_va,
};
@@ -397,7 +387,6 @@ static int k3_dsp_rproc_probe(struct platform_device *pdev)
dev_info(dev, "configured DSP for IPC-only mode\n");
rproc->state = RPROC_DETACHED;
/* override rproc ops with only required IPC-only mode ops */
- rproc->ops->attach = k3_dsp_rproc_attach;
rproc->ops->detach = k3_dsp_rproc_detach;
rproc->ops->get_loaded_rsc_table = k3_dsp_get_loaded_rsc_table;
} else {
diff --git a/drivers/remoteproc/ti_k3_m4_remoteproc.c b/drivers/remoteproc/ti_k3_m4_remoteproc.c
index 8830b1d84675..b52a1014c934 100644
--- a/drivers/remoteproc/ti_k3_m4_remoteproc.c
+++ b/drivers/remoteproc/ti_k3_m4_remoteproc.c
@@ -244,18 +244,6 @@ static void k3_m4_release_tsp(void *data)
ti_sci_proc_release(tsp);
}
-/*
- * Attach to a running M4 remote processor (IPC-only mode)
- *
- * The remote processor is already booted, so there is no need to issue any
- * TI-SCI commands to boot the M4 core. This callback is used only in IPC-only
- * mode.
- */
-static int k3_m4_rproc_attach(struct rproc *rproc)
-{
- return 0;
-}
-
/*
* Detach from a running M4 remote processor (IPC-only mode)
*
@@ -273,7 +261,7 @@ static const struct rproc_ops k3_m4_rproc_ops = {
.unprepare = k3_rproc_unprepare,
.start = k3_rproc_start,
.stop = k3_rproc_stop,
- .attach = k3_m4_rproc_attach,
+ .attach = k3_rproc_attach,
.detach = k3_m4_rproc_detach,
.kick = k3_rproc_kick,
.da_to_va = k3_m4_rproc_da_to_va,
diff --git a/drivers/remoteproc/ti_k3_r5_remoteproc.c b/drivers/remoteproc/ti_k3_r5_remoteproc.c
index 2bec94755e31..fe1bc3a74b09 100644
--- a/drivers/remoteproc/ti_k3_r5_remoteproc.c
+++ b/drivers/remoteproc/ti_k3_r5_remoteproc.c
@@ -559,17 +559,6 @@ static int k3_r5_rproc_stop(struct rproc *rproc)
return ret;
}
-/*
- * Attach to a running R5F remote processor (IPC-only mode)
- *
- * The R5F attach callback is a NOP. The remote processor is already booted, and
- * all required resources have been acquired during probe routine, so there is
- * no need to issue any TI-SCI commands to boot the R5F cores in IPC-only mode.
- * This callback is invoked only in IPC-only mode and exists because
- * rproc_validate() checks for its existence.
- */
-static int k3_r5_rproc_attach(struct rproc *rproc) { return 0; }
-
/*
* Detach from a running R5F remote processor (IPC-only mode)
*
@@ -1059,7 +1048,7 @@ static int k3_r5_rproc_configure_mode(struct k3_rproc *kproc)
kproc->rproc->ops->unprepare = NULL;
kproc->rproc->ops->start = NULL;
kproc->rproc->ops->stop = NULL;
- kproc->rproc->ops->attach = k3_r5_rproc_attach;
+ kproc->rproc->ops->attach = k3_rproc_attach;
kproc->rproc->ops->detach = k3_r5_rproc_detach;
kproc->rproc->ops->get_loaded_rsc_table =
k3_r5_get_loaded_rsc_table;
--
2.34.1
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