linux-kernel - [PATCH v2 36/45] mfd: tps6586x: Use devm_register_simple_power_off

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Message-Id: <20211027211715.12671-37-digetx@gmail.com>
Date:   Thu, 28 Oct 2021 00:17:06 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Lee Jones <lee.jones@...aro.org>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        Mark Brown <broonie@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Russell King <linux@...linux.org.uk>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Ulf Hansson <ulf.hansson@...aro.org>
Cc:     Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>, Guo Ren <guoren@...nel.org>,
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Subject: [PATCH v2 36/45] mfd: tps6586x: Use devm_register_simple_power_off_handler()

Use devm_register_simple_power_off_handler() that replaces global
pm_power_off variable and allows to register multiple power-off handlers.

Signed-off-by: Dmitry Osipenko <digetx@...il.com>
---
 drivers/mfd/tps6586x.c | 21 ++++++++++++++-------
 1 file changed, 14 insertions(+), 7 deletions(-)

diff --git a/drivers/mfd/tps6586x.c b/drivers/mfd/tps6586x.c
index c9303d3d6602..9033ed936d1e 100644
--- a/drivers/mfd/tps6586x.c
+++ b/drivers/mfd/tps6586x.c
@@ -22,6 +22,7 @@
 #include <linux/err.h>
 #include <linux/i2c.h>
 #include <linux/platform_device.h>
+#include <linux/reboot.h>
 #include <linux/regmap.h>
 #include <linux/of.h>
 
@@ -461,9 +462,10 @@ static const struct regmap_config tps6586x_regmap_config = {
 	.cache_type = REGCACHE_RBTREE,
 };
 
-static struct device *tps6586x_dev;
-static void tps6586x_power_off(void)
+static void tps6586x_power_off(void *data)
 {
+	struct device *tps6586x_dev = data;
+
 	if (tps6586x_clr_bits(tps6586x_dev, TPS6586X_SUPPLYENE, EXITSLREQ_BIT))
 		return;
 
@@ -540,6 +542,16 @@ static int tps6586x_i2c_probe(struct i2c_client *client,
 		return ret;
 	}
 
+	if (pdata->pm_off) {
+		ret = devm_register_simple_power_off_handler(&client->dev,
+							     tps6586x_power_off,
+							     &client->dev);
+		if (ret) {
+			dev_err(&client->dev,
+				"failed to register power-off handler: %d\n", ret);
+			return ret;
+		}
+	}
 
 	if (client->irq) {
 		ret = tps6586x_irq_init(tps6586x, client->irq,
@@ -564,11 +576,6 @@ static int tps6586x_i2c_probe(struct i2c_client *client,
 		goto err_add_devs;
 	}
 
-	if (pdata->pm_off && !pm_power_off) {
-		tps6586x_dev = &client->dev;
-		pm_power_off = tps6586x_power_off;
-	}
-
 	return 0;
 
 err_add_devs:
-- 
2.33.1