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From: Hans de Goede <hdegoede@redhat.com>
To: Coiby Xu <coiby.xu@gmail.com>
Cc: Linus Walleij <linus.walleij@linaro.org>,
	"open list:GPIO SUBSYSTEM" <linux-gpio@vger.kernel.org>,
	Nehal Shah <Nehal-bakulchandra.Shah@amd.com>,
	Shyam Sundar S K <Shyam-sundar.S-k@amd.com>,
	linux-kernel-mentees@lists.linuxfoundation.org
Subject: Re: Any other ways to debug GPIO interrupt controller (pinctrl-amd) for broken touchpads of a new laptop model?
Date: Fri, 2 Oct 2020 21:44:54 +0200	[thread overview]
Message-ID: <eed704f5-4210-788c-37b7-06d65b58d3de@redhat.com> (raw)
In-Reply-To: <20201002145133.a43ypm2z7ofgtt7u@Rk>

Hi,

On 10/2/20 4:51 PM, Coiby Xu wrote:
> On Fri, Oct 02, 2020 at 03:36:29PM +0200, Hans de Goede wrote:

<snip>

>>>> So are you seeing these 7 interrupts / second for the touchpad irq or for
>>>> the GPIO controllers parent irq ?
>>>>
>>>> Also to these 7 interrupts/sec stop happening when you do not touch the
>>>> touchpad ?
>>>>
>>> I see these 7 interrupts / second for the GPIO controller's parent irq.
>>> And they stop happening when I don't touch the touchpad.
>>
>> Only from the parent irq, or also on the touchpad irq itself ?
>>
>> If this only happens on the parent irq, then I would start looking at the
>> amd-pinctrl code which determines which of its "child" irqs to fire.
> 
> This only happens on the parent irq. The input's pin#130 of the GIPO
> chip is low most of the time and pin#130.

Right, but it is a low-level triggered IRQ, so when it is low it should
be executing the i2c-hid interrupt-handler. If it is not executing that
then it is time to look at amd-pinctrl's irq-handler and figure out why
that is not triggering the child irq handler for the touchpad.

Regards,

Hans


  reply	other threads:[~2020-10-02 19:45 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-01 13:22 Any other ways to debug GPIO interrupt controller (pinctrl-amd) for broken touchpads of a new laptop model? Coiby Xu
2020-10-01 20:57 ` Linus Walleij
2020-10-02  9:40   ` Hans de Goede
2020-10-02 12:42     ` Coiby Xu
2020-10-02 13:36       ` Hans de Goede
2020-10-02 14:51         ` Coiby Xu
2020-10-02 19:44           ` Hans de Goede [this message]
2020-10-02 22:45             ` Coiby Xu
2020-10-03 13:22               ` Hans de Goede
2020-10-03 23:03                 ` Coiby Xu
2020-10-04  5:16                   ` Coiby Xu
2020-10-06  4:49                     ` Coiby Xu
2020-10-06  6:28                       ` Hans de Goede
2020-10-06  8:31                         ` Coiby Xu
2020-10-06  8:55                           ` Hans de Goede
2020-10-06  9:28                             ` Hans de Goede
2020-10-06  9:29                               ` Hans de Goede
2020-10-08 16:32                                 ` Coiby Xu
2020-10-14  4:24                                 ` Coiby Xu
2020-10-14 11:34                                   ` Coiby Xu
2020-10-14 11:46                                   ` Hans de Goede
2020-10-15  3:27                                     ` Coiby Xu
2020-10-15  4:06                                     ` Coiby Xu
2020-10-26 22:54                                     ` Coiby Xu
2020-10-27  9:52                                       ` Andy Shevchenko
2020-10-30  4:58                                         ` Coiby Xu
2020-10-27 10:09                                       ` Hans de Goede
2020-10-27 15:13                                         ` Andy Shevchenko
2020-10-27 16:00                                           ` Hans de Goede
2020-10-27 16:09                                             ` Andy Shevchenko
2020-10-29  8:04                                               ` Mika Westerberg
2020-10-30  4:54                                               ` Coiby Xu
2020-11-02 19:06                                                 ` Andy Shevchenko
2020-11-02 22:56                                                   ` Coiby Xu
2020-11-03  0:05                                         ` Coiby Xu
2020-11-03 10:12                                           ` Hans de Goede
2020-11-03 10:49                                             ` Andy Shevchenko
2020-11-03 11:00                                               ` Hans de Goede
2020-10-08 16:26                               ` Coiby Xu
2020-10-06  9:16                           ` Linus Walleij
2020-10-08 16:40                             ` Coiby Xu
2020-10-02 10:59   ` Coiby Xu

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