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From:   <yhchuang@realtek.com>
To:     <kvalo@codeaurora.org>
CC:     <linux-wireless@vger.kernel.org>, <briannorris@chromium.org>,
        <johannes@sipsolutions.net>, <arend.vanspriel@broadcom.com>,
        <tamizhr@codeaurora.org>
Subject: [PATCH v3 0/2] rtw88: add coex related debugfs
Date:   Fri, 13 Mar 2020 11:30:08 +0800
Message-ID: <20200313033008.20070-4-yhchuang@realtek.com>
In-Reply-To: <20200313033008.20070-1-yhchuang@realtek.com>
References: <20200313033008.20070-1-yhchuang@realtek.com>
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From: Yan-Hsuan Chuang <yhchuang@realtek.com>

Sometimes WiFi/BT coexistence problems are difficult to debug. There
are many factors that can influence the coex. Such the different
scenarios of BT's profile, or the environment. So it is very useful
to have some tools to know the current status for WiFi and BT, so that
we can check if the decision made by the coex mechanism is good for
the current situation.

Also we can stop the coex mechanism to stop making any decisions, and
send some commands through user space, to help us check that specific
strategies are good for the current situation.

There's several thread talking about adding a btcoex subsystem in the
stack [1][2], but seems hard to implement. So currently rtw88 can only
add its own debugfs to debug for btcoex. The information is really
important for developers to analyze on the WiFi-BT misbehavior.

[1] https://patchwork.kernel.org/patch/10252135/
[2] https://www.spinics.net/lists/linux-wireless/msg133333.html 


v1 -> v2
  * don't ignore "ignore wlan command"

v2 -> v3
  * Use scnprintf() instead of snprintf()
  * Use kstrtobool() instread of sscanf()


Yan-Hsuan Chuang (2):
  rtw88: add a debugfs entry to dump coex's info
  rtw88: add a debugfs entry to enable/disable coex mechanism

 drivers/net/wireless/realtek/rtw88/coex.c     | 492 ++++++++++++++++++
 drivers/net/wireless/realtek/rtw88/coex.h     |  10 +
 drivers/net/wireless/realtek/rtw88/debug.c    |  62 +++
 drivers/net/wireless/realtek/rtw88/main.h     |  18 +
 drivers/net/wireless/realtek/rtw88/rtw8822b.c |  30 ++
 drivers/net/wireless/realtek/rtw88/rtw8822c.c |  28 +
 6 files changed, 640 insertions(+)

-- 
2.17.1