From: Jeff LaBundy <jeff@labundy.com>
To: dmitry.torokhov@gmail.com
Cc: linux-input@vger.kernel.org, jeff@labundy.com
Subject: [PATCH 2/5] Input: iqs269a - increase interrupt handler return delay
Date: Mon, 28 Nov 2022 21:02:31 -0600 [thread overview]
Message-ID: <Y4V2R7GB48a2BOke@nixie71> (raw)
In-Reply-To: <Y4V16ey6osEaaZJ/@nixie71>
The time the device takes to deassert its RDY output following an
I2C stop condition scales with the core clock frequency.
To prevent level-triggered interrupts from being reasserted after
the interrupt handler returns, increase the time before returning
to account for the worst-case delay (~140 us) plus margin.
Fixes: 04e49867fad1 ("Input: add support for Azoteq IQS269A")
Signed-off-by: Jeff LaBundy <jeff@labundy.com>
---
drivers/input/misc/iqs269a.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/input/misc/iqs269a.c b/drivers/input/misc/iqs269a.c
index 5620a009bf55..711e67db71a4 100644
--- a/drivers/input/misc/iqs269a.c
+++ b/drivers/input/misc/iqs269a.c
@@ -153,7 +153,7 @@
#define IQS269_PWR_MODE_POLL_SLEEP_US IQS269_ATI_POLL_SLEEP_US
#define IQS269_PWR_MODE_POLL_TIMEOUT_US IQS269_ATI_POLL_TIMEOUT_US
-#define iqs269_irq_wait() usleep_range(100, 150)
+#define iqs269_irq_wait() usleep_range(200, 250)
enum iqs269_local_cap_size {
IQS269_LOCAL_CAP_SIZE_0,
--
2.34.1
next prev parent reply other threads:[~2022-11-29 3:04 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-29 3:00 [PATCH 0/5] Miscellaneous fixes for Azoteq IQS269A Jeff LaBundy
2022-11-29 3:02 ` [PATCH 1/5] Input: iqs269a - drop unused device node references Jeff LaBundy
2022-12-15 9:31 ` Mattijs Korpershoek
2022-11-29 3:02 ` Jeff LaBundy [this message]
2022-12-15 9:32 ` [PATCH 2/5] Input: iqs269a - increase interrupt handler return delay Mattijs Korpershoek
2022-11-29 3:02 ` [PATCH 3/5] Input: iqs269a - configure device with a single block write Jeff LaBundy
2022-12-15 9:55 ` Mattijs Korpershoek
2022-11-29 3:02 ` [PATCH 4/5] Input: iqs269a - do not poll during suspend or resume Jeff LaBundy
2022-12-15 10:07 ` Mattijs Korpershoek
2022-11-29 3:03 ` [PATCH 5/5] Input: iqs269a - do not poll during ATI Jeff LaBundy
2022-12-15 10:22 ` Mattijs Korpershoek
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