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

Mathieu Poirier
2020-04-24T20:25:20Z

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@linaro.org>
---
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