linux-kernel - [PATCH v3 16/19] power: reset: gemini-poweroff: Use devm_register_sys_off_handler(POWER

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Date: Thu, 8 Feb 2024 11:04:07 -0600
From: Andrew Davis <afd@...com>
To: Sebastian Reichel <sre@...nel.org>,
        Manivannan Sadhasivam
	<manivannan.sadhasivam@...aro.org>,
        Cristian Ciocaltea
	<cristian.ciocaltea@...il.com>,
        Florian Fainelli
	<florian.fainelli@...adcom.com>,
        Ray Jui <rjui@...adcom.com>, Scott Branden
	<sbranden@...adcom.com>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad
 Dybcio <konrad.dybcio@...aro.org>,
        Sean Wang <sean.wang@...iatek.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno
	<angelogioacchino.delregno@...labora.com>
CC: <linux-pm@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-actions@...ts.infradead.org>, <linux-arm-msm@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>, Andrew Davis <afd@...com>
Subject: [PATCH v3 16/19] power: reset: gemini-poweroff: Use devm_register_sys_off_handler(POWER_OFF)

Use device life-cycle managed register function to simplify probe.

Signed-off-by: Andrew Davis <afd@...com>
---
 drivers/power/reset/gemini-poweroff.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/drivers/power/reset/gemini-poweroff.c b/drivers/power/reset/gemini-poweroff.c
index d309b610142ce..06d6992dec892 100644
--- a/drivers/power/reset/gemini-poweroff.c
+++ b/drivers/power/reset/gemini-poweroff.c
@@ -70,12 +70,9 @@ static irqreturn_t gemini_powerbutton_interrupt(int irq, void *data)
 	return IRQ_HANDLED;
 }
 
-/* This callback needs this static local as it has void as argument */
-static struct gemini_powercon *gpw_poweroff;
-
-static void gemini_poweroff(void)
+static int gemini_poweroff(struct sys_off_data *data)
 {
-	struct gemini_powercon *gpw = gpw_poweroff;
+	struct gemini_powercon *gpw = data->cb_data;
 	u32 val;
 
 	dev_crit(gpw->dev, "Gemini power off\n");
@@ -86,6 +83,8 @@ static void gemini_poweroff(void)
 	val &= ~GEMINI_CTRL_ENABLE;
 	val |= GEMINI_CTRL_SHUTDOWN;
 	writel(val, gpw->base + GEMINI_PWC_CTRLREG);
+
+	return NOTIFY_DONE;
 }
 
 static int gemini_poweroff_probe(struct platform_device *pdev)
@@ -148,8 +147,11 @@ static int gemini_poweroff_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	pm_power_off = gemini_poweroff;
-	gpw_poweroff = gpw;
+	ret = devm_register_sys_off_handler(dev, SYS_OFF_MODE_POWER_OFF,
+					    SYS_OFF_PRIO_DEFAULT,
+					    gemini_poweroff, gpw);
+	if (ret)
+		return ret;
 
 	dev_info(dev, "Gemini poweroff driver registered\n");
 
-- 
2.39.2