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

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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 <miquel.raynal@bootlin.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20241002-svc-i3c-hj-v6-3-7e6e1d3569ae@nxp.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Frank Li 2024-10-02 10:50:35 -04:00 committed by Alexandre Belloni
parent e22405a812
commit 6a12f56f73
1 changed files with 6 additions and 0 deletions
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6
drivers/i3c/master/svc-i3c-master.c
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@ -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)) {