i3c: mipi-i3c-hci: Set ring start request together with enable

Set ring start request together with ring enable in hci_dma_init(). This
causes the ring abort request in hci_dma_dequeue_xfer() will raise the
INTR_RING_OP (RING_OP_STAT in MIPI I3C HCI specification) interrupt in
the RH_INTR_STATUS register.

Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Link: https://lore.kernel.org/r/20230921055704.1087277-7-jarkko.nikula@linux.intel.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

diff --git a/drivers/i3c/master/mipi-i3c-hci/dma.c b/drivers/i3c/master/mipi-i3c-hci/dma.c
index e676b47966d23ad41793d1e8be8db3b043754cb1..d2dbbcdad1e9434e39111cbdffb03ed353ff966e 100644 (file)
--- a/drivers/i3c/master/mipi-i3c-hci/dma.c
+++ b/drivers/i3c/master/mipi-i3c-hci/dma.c
@@ -325,7 +325,8 @@ static int hci_dma_init(struct i3c_hci *hci)
                rh_reg_write(INTR_SIGNAL_ENABLE, regval);
 
 ring_ready:
-               rh_reg_write(RING_CONTROL, RING_CTRL_ENABLE);
+               rh_reg_write(RING_CONTROL, RING_CTRL_ENABLE |
+                                          RING_CTRL_RUN_STOP);
        }
 
        regval = FIELD_PREP(MAX_HEADER_COUNT, rings->total);