[PATCH 11/16] i3c: mipi-i3c-hci: Factor out reset-and-restore helper

[Adrian Hunter]

Factor the reset-and-restore sequence out of i3c_hci_rpm_resume() into
a separate helper.

This allows the same logic to be reused for recovery paths in subsequent
changes without duplicating suspend/resume handling.

No functional change.

Signed-off-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
---
 drivers/i3c/master/mipi-i3c-hci/core.c | 21 +++++++++++++++++++--
 drivers/i3c/master/mipi-i3c-hci/hci.h  |  2 ++
 2 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/drivers/i3c/master/mipi-i3c-hci/core.c b/drivers/i3c/master/mipi-i3c-hci/core.c
index 4c4e87a9b352..f745805d3c99 100644
--- a/drivers/i3c/master/mipi-i3c-hci/core.c
+++ b/drivers/i3c/master/mipi-i3c-hci/core.c
@@ -801,9 +801,8 @@ int i3c_hci_rpm_suspend(struct device *dev)
 }
 EXPORT_SYMBOL_GPL(i3c_hci_rpm_suspend);
 
-int i3c_hci_rpm_resume(struct device *dev)
+static int i3c_hci_do_reset_and_restore(struct i3c_hci *hci)
 {
-	struct i3c_hci *hci = dev_get_drvdata(dev);
 	int ret;
 
 	ret = i3c_hci_reset_and_init(hci);
@@ -824,6 +823,24 @@ int i3c_hci_rpm_resume(struct device *dev)
 
 	return 0;
 }
+
+int i3c_hci_reset_and_restore(struct i3c_hci *hci)
+{
+	i3c_hci_bus_disable(hci);
+
+	hci->io->suspend(hci);
+
+	i3c_hci_sync_irq_inactive(hci);
+
+	return i3c_hci_do_reset_and_restore(hci);
+}
+
+int i3c_hci_rpm_resume(struct device *dev)
+{
+	struct i3c_hci *hci = dev_get_drvdata(dev);
+
+	return i3c_hci_do_reset_and_restore(hci);
+}
 EXPORT_SYMBOL_GPL(i3c_hci_rpm_resume);
 
 static int i3c_hci_runtime_suspend(struct device *dev)
diff --git a/drivers/i3c/master/mipi-i3c-hci/hci.h b/drivers/i3c/master/mipi-i3c-hci/hci.h
index d542d03dc629..9b46453d6d4b 100644
--- a/drivers/i3c/master/mipi-i3c-hci/hci.h
+++ b/drivers/i3c/master/mipi-i3c-hci/hci.h
@@ -175,4 +175,6 @@ int i3c_hci_process_xfer(struct i3c_hci *hci, struct hci_xfer *xfer, int n);
 int i3c_hci_rpm_suspend(struct device *dev);
 int i3c_hci_rpm_resume(struct device *dev);
 
+int i3c_hci_reset_and_restore(struct i3c_hci *hci);
+
 #endif
-- 
2.51.0