Commit f2b5d43c authored by Adrian Hunter's avatar Adrian Hunter Committed by Alexandre Belloni
Browse files

i3c: mipi-i3c-hci: Allow core re-initialization for Runtime PM support 



Prepare i3c_hci_reset_and_init() to support runtime resume.  Update it to
handle the case where the I/O mode has already been selected.

Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Reviewed-by: default avatarFrank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20260113072702.16268-18-adrian.hunter@intel.com


Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@bootlin.com>
parent 7f91e0e6

drivers/i3c/master/mipi-i3c-hci/core.c

+21 −17
Original line number Diff line number Diff line
@@ -681,6 +681,9 @@ static int i3c_hci_reset_and_init(struct i3c_hci *hci) 
		}

	}



	if (hci->io) {

		ret = i3c_hci_set_io_mode(hci, hci->io == &mipi_i3c_hci_dma);

	} else {

		/* Try activating DMA operations first */

		if (hci->RHS_regs) {

			ret = i3c_hci_set_io_mode(hci, true);
@@ -703,6 +706,7 @@ static int i3c_hci_reset_and_init(struct i3c_hci *hci) 
			dev_err(&hci->master.dev, "neither DMA nor PIO can be used\n");

			ret = ret ?: -EINVAL;

		}

	}

	if (ret)

		return ret;