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2024-10-09 244b2c5ca8b14627e4a17755e5922221e121c771 
 kernel/drivers/power/supply/gpio-charger.c
....@@ -1,19 +1,9 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
12 /*
23  *  Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
34  *  Driver for chargers which report their online status through a GPIO pin
4
- *
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- *  This program is free software; you can redistribute it and/or modify it
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- *  under  the terms of the GNU General  Public License as published by the
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- *  Free Software Foundation;  either version 2 of the License, or (at your
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- *  option) any later version.
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- *
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- *  You should have received a copy of the GNU General Public License along
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- *  with this program; if not, write to the Free Software Foundation, Inc.,
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- *  675 Mass Ave, Cambridge, MA 02139, USA.
13
- *
145  */
156 
16
-#include <linux/extcon-provider.h>
177 #include <linux/device.h>
188 #include <linux/init.h>
199 #include <linux/interrupt.h>
....@@ -40,13 +30,11 @@
4030 
4131 	struct power_supply *charger;
4232 	struct power_supply_desc charger_desc;
43
-	struct extcon_dev *edev;
4433 	struct gpio_desc *gpiod;
4534 	struct gpio_desc *charge_status;
4635 
4736 	struct gpio_descs *current_limit_gpios;
4837 	struct gpio_mapping *current_limit_map;
49
-	struct notifier_block cable_cg_nb;
5038 	u32 current_limit_map_size;
5139 	u32 charge_current_limit;
5240 };
....@@ -249,22 +237,6 @@
249237 	return 0;
250238 }
251239 
252
-static int gpio_charger_evt_notifier(struct notifier_block *nb,
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-				     unsigned long event, void *ptr)
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-{
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-	int limit_ua;
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-	struct gpio_charger *charger =
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-		container_of(nb, struct gpio_charger, cable_cg_nb);
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-
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-	limit_ua = charger->current_limit_map[charger->current_limit_map_size - 1].limit_ua;
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-	if (extcon_get_state(charger->edev, EXTCON_CHG_USB_DCP) > 0)
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-		limit_ua = charger->current_limit_map[0].limit_ua;
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-
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-	set_charge_current_limit(charger, limit_ua);
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-
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-	return NOTIFY_DONE;
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-}
267
-
268240 /*
269241  * The entries will be overwritten by driver's probe routine depending
270242  * on the available features. This list ensures, that the array is big
....@@ -280,7 +252,6 @@
280252 {
281253 	struct device *dev = &pdev->dev;
282254 	const struct gpio_charger_platform_data *pdata = dev->platform_data;
283
-	struct extcon_dev *edev;
284255 	struct power_supply_config psy_cfg = {};
285256 	struct gpio_charger *gpio_charger;
286257 	struct power_supply_desc *charger_desc;
....@@ -299,27 +270,6 @@
299270 		return -ENOMEM;
300271 	gpio_charger->dev = dev;
301272 
302
-	if (of_property_read_bool(dev->of_node, "extcon")) {
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-		edev = extcon_get_edev_by_phandle(dev, 0);
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-		if (IS_ERR(edev)) {
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-			if (PTR_ERR(edev) != -EPROBE_DEFER)
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-				dev_err(dev, "Invalid or missing extcon\n");
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-			return PTR_ERR(edev);
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-		}
309
-		gpio_charger->edev = edev;
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-		gpio_charger->cable_cg_nb.notifier_call =
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-			gpio_charger_evt_notifier;
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-		ret = devm_extcon_register_notifier(dev, edev,
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-						    EXTCON_CHG_USB_DCP,
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-						    &gpio_charger->cable_cg_nb);
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-		if (ret) {
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-			dev_err(dev, "failed to register notifier for CDP\n");
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-			return ret;
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-		}
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-	} else {
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-		gpio_charger->edev = ERR_PTR(-ENODEV);
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-	}
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-
323273 	/*
324274 	 * This will fetch a GPIO descriptor from device tree, ACPI or
325275 	 * boardfile descriptor tables. It's good to try this first.
....@@ -327,10 +277,8 @@
327277 	gpio_charger->gpiod = devm_gpiod_get_optional(dev, NULL, GPIOD_IN);
328278 	if (IS_ERR(gpio_charger->gpiod)) {
329279 		/* Just try again if this happens */
330
-		if (PTR_ERR(gpio_charger->gpiod) == -EPROBE_DEFER)
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-			return -EPROBE_DEFER;
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-		dev_err(dev, "error getting GPIO descriptor\n");
333
-		return PTR_ERR(gpio_charger->gpiod);
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+		return dev_err_probe(dev, PTR_ERR(gpio_charger->gpiod),
281
+				     "error getting GPIO descriptor\n");
334282 	}
335283 
336284 	if (gpio_charger->gpiod) {