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Commit ad644987 authored by Stephen Boyd's avatar Stephen Boyd Committed by Linus Walleij
Browse files

pinctrl: qcom: Hook pm_power_down for shutdown support 



Assign pm_power_off() if we have the PS_HOLD functionality so
that we can properly shutdown the SoC. Otherwise, shutdown won't
do anything besides put the CPU into a tight loop. Unfortunately,
we have to use a singleton here because pm_power_off() doesn't
take any arguments. Fortunately there's only one instance of the
pinctrl device on a running system so this isn't a problem.

Cc: Pramod Gurav <pramod.gurav@smartplayin.com>
Signed-off-by: default avatarStephen Boyd <sboyd@codeaurora.org>
Acked-by: default avatarBjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent e3f3aaac

drivers/pinctrl/qcom/pinctrl-msm.c

+10 −0
Original line number Diff line number Diff line
@@ -28,6 +28,7 @@ 
#include <linux/interrupt.h>

#include <linux/spinlock.h>

#include <linux/reboot.h>

#include <linux/pm.h>



#include "../core.h"

#include "../pinconf.h"
@@ -855,6 +856,13 @@ static int msm_ps_hold_restart(struct notifier_block *nb, unsigned long action, 
	return NOTIFY_DONE;

}



static struct msm_pinctrl *poweroff_pctrl;



static void msm_ps_hold_poweroff(void)

{

	msm_ps_hold_restart(&poweroff_pctrl->restart_nb, 0, NULL);

}



static void msm_pinctrl_setup_pm_reset(struct msm_pinctrl *pctrl)

{

	int i;
@@ -867,6 +875,8 @@ static void msm_pinctrl_setup_pm_reset(struct msm_pinctrl *pctrl) 
			if (register_restart_handler(&pctrl->restart_nb))

				dev_err(pctrl->dev,

					"failed to setup restart handler.\n");

			poweroff_pctrl = pctrl;

			pm_power_off = msm_ps_hold_poweroff;

			break;

		}

}