From: andrew@lunn.ch (Andrew Lunn)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 20/44] power/reset: restart-poweroff: Register with kernel poweroff handler
Date: Tue, 7 Oct 2014 18:06:38 +0200 [thread overview]
Message-ID: <20141007160638.GE19005@lunn.ch> (raw)
In-Reply-To: <1412659726-29957-21-git-send-email-linux@roeck-us.net>
On Mon, Oct 06, 2014 at 10:28:22PM -0700, Guenter Roeck wrote:
> Register with kernel poweroff handler instead of seting pm_power_off
> directly. Register as poweroff handler of last resort since the driver
> does not really power off the system but executes a restart.
I would not say last resort, this is how it is designed to work. There
is no way to turn the power off from with linux, it is designed that
u-boot will put the hardware into minimal power consumption until the
"power" button is pressed.
Other than that,
Acked-by: Andrew Lunn <andrew@lunn.ch>
Thanks
Andrew
>
> Cc: Sebastian Reichel <sre@kernel.org>
> Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
> Cc: David Woodhouse <dwmw2@infradead.org>
> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
> ---
> drivers/power/reset/restart-poweroff.c | 25 ++++++++++++-------------
> 1 file changed, 12 insertions(+), 13 deletions(-)
>
> diff --git a/drivers/power/reset/restart-poweroff.c b/drivers/power/reset/restart-poweroff.c
> index edd707e..5437697 100644
> --- a/drivers/power/reset/restart-poweroff.c
> +++ b/drivers/power/reset/restart-poweroff.c
> @@ -12,35 +12,34 @@
> */
> #include <linux/kernel.h>
> #include <linux/init.h>
> +#include <linux/notifier.h>
> #include <linux/platform_device.h>
> #include <linux/of_platform.h>
> #include <linux/module.h>
> +#include <linux/pm.h>
> #include <linux/reboot.h>
> -#include <asm/system_misc.h>
>
> -static void restart_poweroff_do_poweroff(void)
> +static int restart_poweroff_do_poweroff(struct notifier_block *this,
> + unsigned long unused1, void *unused2)
> {
> reboot_mode = REBOOT_HARD;
> machine_restart(NULL);
> +
> + return NOTIFY_DONE;
> }
>
> +static struct notifier_block restart_poweroff_handler = {
> + .notifier_call = restart_poweroff_do_poweroff,
> +};
> +
> static int restart_poweroff_probe(struct platform_device *pdev)
> {
> - /* If a pm_power_off function has already been added, leave it alone */
> - if (pm_power_off != NULL) {
> - dev_err(&pdev->dev,
> - "pm_power_off function already registered");
> - return -EBUSY;
> - }
> -
> - pm_power_off = &restart_poweroff_do_poweroff;
> - return 0;
> + return register_poweroff_handler(&restart_poweroff_handler);
> }
>
> static int restart_poweroff_remove(struct platform_device *pdev)
> {
> - if (pm_power_off == &restart_poweroff_do_poweroff)
> - pm_power_off = NULL;
> + unregister_poweroff_handler(&restart_poweroff_handler);
>
> return 0;
> }
> --
> 1.9.1
>
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel at lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2014-10-07 16:06 UTC|newest]
Thread overview: 91+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1412659726-29957-1-git-send-email-linux@roeck-us.net>
2014-10-07 5:28 ` [PATCH 01/44] kernel: Add support for poweroff handler call chain Guenter Roeck
2014-10-07 7:46 ` Philippe Rétornaz
2014-10-09 10:31 ` Pavel Machek
2014-10-09 15:38 ` Guenter Roeck
2014-10-09 11:31 ` Geert Uytterhoeven
2014-10-09 13:25 ` Guenter Roeck
2015-06-18 1:04 ` Stephen Boyd
2015-06-18 6:53 ` Frans Klaver
2015-06-18 11:54 ` Guenter Roeck
2015-06-18 12:14 ` Frans Klaver
2015-06-18 15:30 ` Guenter Roeck
2015-06-18 21:40 ` Stephen Boyd
2014-10-07 5:28 ` [PATCH 02/44] memory: emif: Use API function to determine poweroff capability Guenter Roeck
2014-10-07 5:28 ` [PATCH 03/44] hibernate: Call have_kernel_poweroff instead of checking pm_power_off Guenter Roeck
2014-10-07 23:41 ` Rafael J. Wysocki
2014-10-09 10:32 ` Pavel Machek
2014-10-09 13:24 ` Guenter Roeck
2014-10-07 5:28 ` [PATCH 04/44] m68k: Replace mach_power_off with pm_power_off Guenter Roeck
2014-10-07 8:29 ` Geert Uytterhoeven
2014-10-07 5:28 ` [PATCH 05/44] mfd: as3722: Drop reference to pm_power_off from devicetree bindings Guenter Roeck
2014-10-07 10:59 ` Mark Rutland
2014-10-07 16:21 ` Rob Landley
2014-10-07 16:31 ` Guenter Roeck
2014-10-07 16:59 ` David Daney
2014-10-07 17:10 ` Rob Landley
2014-10-07 16:58 ` Mark Rutland
2014-10-07 5:28 ` [PATCH 06/44] gpio-poweroff: " Guenter Roeck
2014-10-07 11:03 ` Mark Rutland
2014-10-07 15:50 ` Andrew Lunn
2014-10-07 5:28 ` [PATCH 07/44] qnap-poweroff: " Guenter Roeck
2014-10-07 11:02 ` Mark Rutland
2014-10-07 15:57 ` Guenter Roeck
2014-10-07 15:51 ` Andrew Lunn
2014-10-07 5:28 ` [PATCH 09/44] mfd: palmas: Register with kernel poweroff handler Guenter Roeck
2014-10-07 5:28 ` [PATCH 10/44] mfd: axp20x: " Guenter Roeck
2014-10-07 5:28 ` [PATCH 11/44] mfd: retu: " Guenter Roeck
2014-10-07 5:28 ` [PATCH 12/44] mfd: ab8500-sysctrl: " Guenter Roeck
2014-10-07 8:00 ` Lee Jones
2014-10-09 10:36 ` Catalin Marinas
2014-10-09 10:49 ` Lee Jones
2014-10-09 13:26 ` Guenter Roeck
2014-10-09 13:33 ` Lee Jones
2014-10-09 15:45 ` Guenter Roeck
2014-10-09 15:54 ` Guenter Roeck
2014-10-07 5:28 ` [PATCH 13/44] mfd: max8907: " Guenter Roeck
2014-10-07 5:28 ` [PATCH 14/44] mfd: tps80031: " Guenter Roeck
2014-10-07 5:28 ` [PATCH 15/44] mfd: dm355evm_msp: " Guenter Roeck
2014-10-07 5:28 ` [PATCH 16/44] mfd: tps6586x: " Guenter Roeck
2014-10-07 5:28 ` [PATCH 17/44] mfd: tps65910: " Guenter Roeck
2014-10-07 5:28 ` [PATCH 18/44] mfd: twl4030-power: " Guenter Roeck
2014-10-07 7:52 ` Lee Jones
2014-10-07 5:28 ` [PATCH 19/44] ipmi: " Guenter Roeck
2014-10-07 5:28 ` [PATCH 20/44] power/reset: restart-poweroff: " Guenter Roeck
2014-10-07 16:06 ` Andrew Lunn [this message]
2014-10-07 5:28 ` [PATCH 21/44] power/reset: gpio-poweroff: " Guenter Roeck
2014-10-07 16:00 ` Andrew Lunn
2014-10-07 5:28 ` [PATCH 22/44] power/reset: as3722-poweroff: " Guenter Roeck
2014-10-07 5:28 ` [PATCH 23/44] power/reset: qnap-poweroff: " Guenter Roeck
2014-10-07 16:02 ` Andrew Lunn
2014-10-07 5:28 ` [PATCH 24/44] power/reset: msm-powroff: " Guenter Roeck
2014-10-07 5:28 ` [PATCH 25/44] power/reset: vexpress-poweroff: " Guenter Roeck
2014-10-07 5:28 ` [PATCH 26/44] x86: iris: " Guenter Roeck
2014-10-07 5:28 ` [PATCH 27/44] x86: apm: " Guenter Roeck
2014-10-07 5:28 ` [PATCH 28/44] x86: olpc: Register xo1 poweroff handler " Guenter Roeck
2014-10-07 5:28 ` [PATCH 29/44] staging: nvec: Register " Guenter Roeck
2014-10-07 16:23 ` Greg Kroah-Hartman
2014-10-08 18:51 ` Marc Dietrich
2014-10-07 5:28 ` [PATCH 30/44] acpi: Register poweroff handler " Guenter Roeck
2014-10-07 5:28 ` [PATCH 32/44] arm64: psci: Register " Guenter Roeck
2014-10-09 10:41 ` Catalin Marinas
2014-10-07 5:28 ` [PATCH 33/44] avr32: atngw100: " Guenter Roeck
2014-11-01 10:16 ` Hans-Christian Egtvedt
2014-11-01 17:02 ` Guenter Roeck
2014-10-07 5:28 ` [PATCH 34/44] ia64: " Guenter Roeck
2014-10-07 5:28 ` [PATCH 35/44] m68k: " Guenter Roeck
2014-10-07 9:19 ` Geert Uytterhoeven
2014-10-07 5:28 ` [PATCH 36/44] mips: " Guenter Roeck
2014-10-07 5:28 ` [PATCH 37/44] sh: " Guenter Roeck
2014-10-07 5:28 ` [PATCH 38/44] x86: lguest: " Guenter Roeck
2014-10-07 5:28 ` [PATCH 39/44] x86: ce4100: " Guenter Roeck
2014-10-07 5:28 ` [PATCH 40/44] x86: intel-mid: Drop registration of dummy poweroff handlers Guenter Roeck
2014-10-07 5:28 ` [PATCH 41/44] x86: pmc_atom: Register poweroff handler with kernel poweroff handler Guenter Roeck
2014-10-07 5:28 ` [PATCH 42/44] efi: " Guenter Roeck
2014-10-16 14:59 ` Matt Fleming
2014-10-16 15:24 ` Mark Salter
2014-10-16 17:27 ` Guenter Roeck
2014-10-16 17:46 ` Matt Fleming
2014-10-16 18:27 ` Guenter Roeck
2014-10-07 5:28 ` [PATCH 43/44] hwmon: (ab8500) Call kernel_power_off instead of pm_power_off Guenter Roeck
2014-10-07 5:28 ` [PATCH 44/44] kernel: Remove pm_power_off Guenter Roeck
2014-10-07 23:43 ` Rafael J. Wysocki
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