From: Linus Walleij <linus.walleij@linaro.org>
To: qiujiang <qiujiang@huawei.com>,
Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: Alexandre Courbot <gnurou@gmail.com>,
"linux-gpio@vger.kernel.org" <linux-gpio@vger.kernel.org>,
ACPI Devel Maling List <linux-acpi@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
linuxarm@huawei.com, haifeng.wei@huawei.com,
charles.chenxin@huawei.com
Subject: Re: [RFC PATCH] GPIO/ACPI: DesignWare: Add GPIO-signaled ACPI events support for power button
Date: Mon, 15 Feb 2016 19:25:23 +0100 [thread overview]
Message-ID: <CACRpkdZNCt_TtA6SR86dVCR7vq5cpVmbzxeTguc7go6vVRkuTg@mail.gmail.com> (raw)
In-Reply-To: <1454653542-122055-1-git-send-email-qiujiang@huawei.com>
Mika can you help out looking at this patch. Tell me if you need a copy
of the whole patch, I'm not smart with ACPI.
On Fri, Feb 5, 2016 at 7:25 AM, qiujiang <qiujiang@huawei.com> wrote:
> This patch modifies the DesignWare GPIO controller driver to
> support the GPIO-signaled ACPI Events. This is used for power
> button function on ARM server.
>
> To make it work, the _AEI and _EVT object must be defined in
> the corresponding GPIO driver's dsdt table in UEFI. At the same
> time, ACPI daemon component is also necessary.
>
> Signed-off-by: qiujiang <qiujiang@huawei.com>
(...)
> --- a/drivers/gpio/gpio-dwapb.c
> +++ b/drivers/gpio/gpio-dwapb.c
> @@ -23,6 +23,11 @@
> #include <linux/spinlock.h>
> #include <linux/platform_data/gpio-dwapb.h>
> #include <linux/slab.h>
> +#include <linux/acpi.h>
> +#include <linux/gpio.h>
You should only need <linux/driver.h>
> +#include "gpiolib.h"
I guess this is for some acpi_gpiochip* functions that ACPI GPIO
drivers need like this:
> + /* Add GPIO-signaled ACPI event support */
> + if (pp->irq)
> + acpi_gpiochip_request_interrupts(&(port->bgc.gc));
Hm, maybe these should be in "gpiolib-acpi.h" or so.
Overall the patch looks sane to me, but I need some ACPI
person to tell.
Yours,
Linus Walleij
next prev parent reply other threads:[~2016-02-15 18:25 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-05 6:25 [RFC PATCH] GPIO/ACPI: DesignWare: Add GPIO-signaled ACPI events support for power button qiujiang
2016-02-15 18:25 ` Linus Walleij [this message]
2016-02-16 12:32 ` Jiang Qiu
2016-02-16 15:38 ` Linus Walleij
2016-02-16 9:24 ` Mika Westerberg
2016-02-16 12:43 ` Jiang Qiu
2016-02-16 12:49 ` Mika Westerberg
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