i3c: master: svc: need check IBIWON for dynamic address assignment

When sending REQUEST_PROC_DAA, emit START and address 7E. Address
arbitration may occur at this time if other devices trigger HJ, IBI, or
CR events.

When IBIWON happen during a REQUEST_PROC_DAA, NACK the IBI request then
send a repeated start to continue current dynamic address assignment.

Reviewed-by: Miquel Raynal <[email protected]>
Signed-off-by: Frank Li <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Alexandre Belloni <[email protected]>

Author: nxpfrankli

drivers/i3c/master/svc-i3c-master.c

@@ -872,6 +872,9 @@ static int svc_i3c_master_do_daa_locked(struct svc_i3c_master *master,
 	int ret, i;
 
 	while (true) {
+		/* clean SVC_I3C_MINT_IBIWON w1c bits */
+		writel(SVC_I3C_MINT_IBIWON, master->regs + SVC_I3C_MSTATUS);
+
 		/* SVC_I3C_MCTRL_REQUEST_PROC_DAA have two mode, ENTER DAA or PROCESS DAA.
 		 *
 		 * ENTER DAA:
@@ -923,6 +926,9 @@ static int svc_i3c_master_do_daa_locked(struct svc_i3c_master *master,
 			ret = svc_i3c_master_readb(master, data, 2);
 			if (ret)
 				break;
+		} else if (SVC_I3C_MSTATUS_IBIWON(reg)) {
+			svc_i3c_master_handle_ibi_won(master, reg);
+			continue;
 		} else if (SVC_I3C_MSTATUS_MCTRLDONE(reg)) {
 			if (SVC_I3C_MSTATUS_STATE_IDLE(reg) &&
 			    SVC_I3C_MSTATUS_COMPLETE(reg)) {