diff options
| author | Frank Li <Frank.Li@nxp.com> | 2024-10-02 10:50:35 -0400 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2024-10-31 23:53:39 +0100 |
| commit | 6a12f56f7392cfdd2f31ef9a090ccadadae548e8 (patch) | |
| tree | f4c87cdaf18beda1f5ad9edcd7339107ec27080b /drivers/i3c | |
| parent | e22405a812a11e5b01bfbb18c5277dd3e69ba589 (diff) | |
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 <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>
Diffstat (limited to 'drivers/i3c')
| -rw-r--r-- | drivers/i3c/master/svc-i3c-master.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/i3c/master/svc-i3c-master.c b/drivers/i3c/master/svc-i3c-master.c index c35a228f0c2f..5df0ec02d73c 100644 --- a/drivers/i3c/master/svc-i3c-master.c +++ b/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)) { |