On 11/1/2015 3:21 PM, Timur Tabi wrote:
Sinan Kaya wrote:
However, after issuing the command; I still need to wait some amount of
time until hardware acknowledges the commands like reset/enable/disable.
These are relatively faster operations happening in microseconds. That's
why, I have mdelay there.
Can you use readl_poll_timeout()?
Yes, I'm changing them to readl_poll_timeout after looking at the
workqueue vs. expected delay requirements. I decided to stick with
polled read.
First, I missed the point here that mdelay is discouraged.
https://www.kernel.org/doc/Documentation/timers/timers-howto.txt
According to same document, msleep can sleep up to 20ms which is not
what I want.
This code is trying to sleep 10ms maximum and treating longer durations
as failures.
readl_poll_timeout calls usleep_range that seems to satisfy what I'm
looking for.
--
Sinan Kaya
Qualcomm Technologies, Inc. on behalf of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a
Linux Foundation Collaborative Project
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