[PATCH v2 08/12] remoteproc: stm32: Introduce new start ops for synchronisation

[Mathieu Poirier]

Introduce new start functions to be used when synchonising with an MCU.

Mainly based on the work published by Arnaud Pouliquen [1].

[1]. https://patchwork.kernel.org/project/linux-remoteproc/list/?series=239877

Signed-off-by: Mathieu Poirier <mathieu.poirier@xxxxxxxxxx>
---
 drivers/remoteproc/stm32_rproc.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/remoteproc/stm32_rproc.c b/drivers/remoteproc/stm32_rproc.c
index 8ba69e903851..404f17a97095 100644
--- a/drivers/remoteproc/stm32_rproc.c
+++ b/drivers/remoteproc/stm32_rproc.c
@@ -449,6 +449,13 @@ static int stm32_rproc_start(struct rproc *rproc)
 	return stm32_rproc_set_hold_boot(rproc, true);
 }
 
+static int stm32_rproc_sync_start(struct rproc *rproc)
+{
+	stm32_rproc_add_coredump_trace(rproc);
+
+	return stm32_rproc_set_hold_boot(rproc, true);
+}
+
 static int stm32_rproc_stop(struct rproc *rproc)
 {
 	struct stm32_rproc *ddata = rproc->priv;
@@ -522,6 +529,10 @@ static struct rproc_ops st_rproc_ops = {
 	.get_boot_addr	= rproc_elf_get_boot_addr,
 };
 
+static __maybe_unused struct rproc_ops st_rproc_sync_ops = {
+	.start		= stm32_rproc_sync_start,
+};
+
 static const struct of_device_id stm32_rproc_match[] = {
 	{ .compatible = "st,stm32mp1-m4" },
 	{},
-- 
2.20.1