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Re: [Xen-devel] [PATCH 01/44] kernel: Add support for poweroff handler call chain
- To: Stephen Boyd <sboyd@xxxxxxxxxxxxxx>
- From: Guenter Roeck <linux@xxxxxxxxxxxx>
- Date: Thu, 18 Jun 2015 08:30:03 -0700
- Cc: linux-m32r-ja@xxxxxxxxxxxxxxxxx, linux-mips@xxxxxxxxxxxxxx, linux-efi@xxxxxxxxxxxxxxx, linux-ia64@xxxxxxxxxxxxxxx, Heiko Stuebner <heiko@xxxxxxxxx>, linux-sh@xxxxxxxxxxxxxxx, devicetree@xxxxxxxxxxxxxxx, Pavel Machek <pavel@xxxxxx>, devel@xxxxxxxxxxxxxxxxxxxx, linux-s390@xxxxxxxxxxxxxxx, lguest@xxxxxxxxxxxxxxxx, linux-c6x-dev@xxxxxxxxxxxxx, linux-hexagon@xxxxxxxxxxxxxxx, Alexander Graf <agraf@xxxxxxx>, linux-acpi@xxxxxxxxxxxxxxx, Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx, Len Brown <len.brown@xxxxxxxxx>, user-mode-linux-devel@xxxxxxxxxxxxxxxxxxxxx, linux-pm@xxxxxxxxxxxxxxx, linux-xtensa@xxxxxxxxxxxxxxxx, adi-buildroot-devel@xxxxxxxxxxxxxxxxxxxxx, linux-m68k@xxxxxxxxxxxxxxxxxxxx, linux-am33-list@xxxxxxxxxx, linux-tegra@xxxxxxxxxxxxxxx, openipmi-developer@xxxxxxxxxxxxxxxxxxxxx, linux-metag@xxxxxxxxxxxxxxx, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, linux-cris-kernel@xxxxxxxx, linux-parisc@xxxxxxxxxxxxxxx, "Rafael J. Wysocki" <rjw@xxxxxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, linux-alpha@xxxxxxxxxxxxxxx, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Romain Perier <romain.perier@xxxxxxxxx>, linuxppc-dev@xxxxxxxxxxxxxxxx
- Delivery-date: Thu, 18 Jun 2015 15:30:28 +0000
- List-id: Xen developer discussion <xen-devel.lists.xen.org>
On Wed, Jun 17, 2015 at 06:04:54PM -0700, Stephen Boyd wrote:
[ ... ]
>
> What happened to this series? I want to add shutdown support to my
> platform and I need to write a register on the PMIC in one driver to
> configure it for shutdown instead of restart and then write an MMIO
> register to tell the PMIC to actually do the shutdown in another driver.
> It seems that the notifier solves this case for me, albeit with the
> slight complication that I need to order the two with some priority.
>
Can you use the .shutdown driver callback instead ?
I see other drivers use that, and check for system_state == SYSTEM_POWER_OFF
to power off the hardware.
Guenter
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