Subject: [PATCH v4 0/6] watchdog: pnx4008: add restart handler

From: [email-masked] (Sylvain Lemieux)
Date: Fri, 26 Feb 2016 10:34:46 -0500

On Fri, 2016-02-26 at 06:36 -0800, Guenter Roeck wrote:
> On 02/25/2016 10:31 AM, Sylvain Lemieux wrote:
> > From: Sylvain Lemieux <[email-masked]>
> >
> > The LPC32xx provide the capability to perform a soft or hard reset;
> > a soft reset will no reset the external peripheral
> > (i.e. RESOUT_N output not asserted).
> >
> > This changeset migrate the restart code from the "mach-lpc32xx" to
> > the "pnx-4008" watchdog driver and add the soft reset capability.
> >
> > The default behavior (i.e. hard reset) remain unchanged.
> >
> > The core restart handler support added by this change:
> > 2165bf524da5f5e496d - "watchdog: core: add restart handler support"
> > is not use in this changeset; it does not support the reboot mode.
> 
> I finally had the time to look into this. Sorry for the late reply.
> 
> Changing the watchdog core to pass the restart mode (or action)
> and the cmd/data pointer to the driver would be trivial and should
> be done instead.
> 
Thanks for the feedback.

Do you want me to rebase this patchset on the patch you will submit
to update the core restart handler support?

> I wrote a patch to do just that. I'll send it out later today for review,
> assuming it passes my internal tests.
> 
> Guenter

> >
> > Note:
> > Patch #5 was generated with the option "--unified=2" to ensure
> > it can be apply before or after the changes for the new
> > LPC32xx irqchip driver:
> > - http://permalink.gmane.org/gmane.linux.drivers.devicetree/144683
> > ---
> > Changes from v3 to v4:
> > * Update the patch as per the feedback received from:
> >    Arnd: http://permalink.gmane.org/gmane.linux.watchdog/3329
> >    - Switch patch #5 and #6 order.
> >
> > Changes from v2 to v3:
> > * Update the patch as per the feedback received from:
> >    Joachim: http://permalink.gmane.org/gmane.linux.watchdog/3303
> >    - remove explicit clock enable from restart handler.
> >    - verify "register_restart_handler" return value.
> >    - add call to unregister_restart_handler".
> >    - do the restart handling directly in "pnx4008_restart_handler".
> > * Move the change to "phy3250.c" into a separate patch and generate
> >    the new patch with the "--unified=2" option.
> >
> > Changes from v1 to v2:
> > * Rename patch title;
> >    was "arm: lpc32xx: restart: add support for soft reset"
> > * Update the patch as per the feedback received from:
> >    Joachim: http://permalink.gmane.org/gmane.linux.ports.arm.kernel/479791
> >    - migrate restart code from "mach-lpc32xx" to "pnx-4008" driver.
> > * Add soft reset support to "pnx-4008" driver instead of "mach-lpc32xx".
> > * Use define available in "pnx-4008" when writting to watchdog register.
> > * Remove restart handler from "mach-lpc32xx".
> > * Remove restart hook from "phy3250.c".
> > * Update driver logging during power-on.
> >
> > Sylvain Lemieux (6):
> >    watchdog: pnx4008: update logging during power-on
> >    watchdog: pnx4008: add restart handler
> >    watchdog: pnx4008: add support for soft reset
> >    watchdog: pnx4008: restart: support "cmd" from userspace
> >    arm: lpc32xx: phy3250 remove restart hook
> >    arm: lpc32xx: remove restart handler
> >
> >   arch/arm/mach-lpc32xx/common.c  | 15 ------------
> >   arch/arm/mach-lpc32xx/common.h  |  1 -
> >   arch/arm/mach-lpc32xx/phy3250.c |  1 -
> >   drivers/watchdog/pnx4008_wdt.c  | 51 +++++++++++++++++++++++++++++++++++++++--
> >   4 files changed, 49 insertions(+), 19 deletions(-)
> >
>