iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

i3c: dw: Disable IBI IRQ depends on hot-join and SIR enabling

Browse Source 
[ Upstream commit 10201396ef6455a68ac671fa0163205d327ebb70 ]

Disable IBI IRQ signal and status only when hot-join and SIR enabling of
all target devices attached to the bus are disabled.

Fixes: e389b1d72a62 ("i3c: dw: Add support for in-band interrupts")

Signed-off-by: Dylan Hung <dylan_hung@aspeedtech.com>
Link: https://lore.kernel.org/r/20240119054547.983693-1-dylan_hung@aspeedtech.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Dylan Hung 2024-01-19 13:45:47 +08:00 committed by Sasha Levin
parent ccb6998cbc
commit 076acd671f
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/i3c/master/dw-i3c-master.c
View File

@ -1163,8 +1163,10 @@ static void dw_i3c_master_set_sir_enabled(struct dw_i3c_master *master,
global = reg == 0xffffffff;
reg &= ~BIT(idx);
} else {
global = reg == 0;
bool hj_rejected = !!(readl(master->regs + DEVICE_CTRL) & DEV_CTRL_HOT_JOIN_NACK);
reg |= BIT(idx);
global = (reg == 0xffffffff) && hj_rejected;
}
writel(reg, master->regs + IBI_SIR_REQ_REJECT);