From 25bc99be5fe53853053ceeaa328068c49dc1e799 Mon Sep 17 00:00:00 2001 From: Frank Li Date: Fri, 1 Nov 2024 12:50:02 -0400 Subject: i3c: master: svc: Modify enabled_events bit 7:0 to act as IBI enable counter Fix issue where disabling IBI on one device disables the entire IBI interrupt. Modify bit 7:0 of enabled_events to serve as an IBI enable counter, ensuring that the system IBI interrupt is disabled only when all I3C devices have IBI disabled. Cc: stable@kernel.org Fixes: 7ff730ca458e ("i3c: master: svc: enable the interrupt in the enable ibi function") Reviewed-by: Miquel Raynal Signed-off-by: Frank Li Link: https://lore.kernel.org/r/20241101165002.2479794-1-Frank.Li@nxp.com Signed-off-by: Alexandre Belloni --- drivers/i3c/master/svc-i3c-master.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'drivers/i3c') diff --git a/drivers/i3c/master/svc-i3c-master.c b/drivers/i3c/master/svc-i3c-master.c index c53f2b27662f..c1ee3828e7ee 100644 --- a/drivers/i3c/master/svc-i3c-master.c +++ b/drivers/i3c/master/svc-i3c-master.c @@ -130,8 +130,8 @@ #define SVC_I3C_PPBAUD_MAX 15 #define SVC_I3C_QUICK_I2C_CLK 4170000 -#define SVC_I3C_EVENT_IBI BIT(0) -#define SVC_I3C_EVENT_HOTJOIN BIT(1) +#define SVC_I3C_EVENT_IBI GENMASK(7, 0) +#define SVC_I3C_EVENT_HOTJOIN BIT(31) struct svc_i3c_cmd { u8 addr; @@ -214,7 +214,7 @@ struct svc_i3c_master { spinlock_t lock; } ibi; struct mutex lock; - int enabled_events; + u32 enabled_events; u32 mctrl_config; }; @@ -1688,7 +1688,7 @@ static int svc_i3c_master_enable_ibi(struct i3c_dev_desc *dev) return ret; } - master->enabled_events |= SVC_I3C_EVENT_IBI; + master->enabled_events++; svc_i3c_master_enable_interrupts(master, SVC_I3C_MINT_SLVSTART); return i3c_master_enec_locked(m, dev->info.dyn_addr, I3C_CCC_EVENT_SIR); @@ -1700,7 +1700,7 @@ static int svc_i3c_master_disable_ibi(struct i3c_dev_desc *dev) struct svc_i3c_master *master = to_svc_i3c_master(m); int ret; - master->enabled_events &= ~SVC_I3C_EVENT_IBI; + master->enabled_events--; if (!master->enabled_events) svc_i3c_master_disable_interrupts(master); -- cgit v1.2.3