add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/leds/leds-as3645a.c
..
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * drivers/leds/leds-as3645a.c - AS3645A and LM3555 flash controllers driver
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  *
..
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@@ -7,15 +8,6 @@
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  * Based on drivers/media/i2c/as3645a.c.
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  *
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  * Contact: Sakari Ailus <sakari.ailus@iki.fi>
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- *
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- * This program is free software; you can redistribute it and/or
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- * modify it under the terms of the GNU General Public License
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- * version 2 as published by the Free Software Foundation.
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- *
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- * This program is distributed in the hope that it will be useful, but
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- * WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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- * General Public License for more details.
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  */
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12
 
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 #include <linux/delay.h>
..
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@@ -25,7 +17,7 @@
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 #include <linux/leds.h>
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 #include <linux/module.h>
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 #include <linux/mutex.h>
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-#include <linux/of.h>
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+#include <linux/property.h>
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 #include <linux/slab.h>
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 #include <media/v4l2-flash-led-class.h>
..
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@@ -132,11 +124,6 @@
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 	u32 peak;
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 };
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-struct as3645a_names {
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-	char flash[32];
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-	char indicator[32];
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-};
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-
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 struct as3645a {
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 	struct i2c_client *client;
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..
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@@ -148,8 +135,8 @@
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 	struct v4l2_flash *vf;
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 	struct v4l2_flash *vfind;
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-	struct device_node *flash_node;
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-	struct device_node *indicator_node;
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+	struct fwnode_handle *flash_node;
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+	struct fwnode_handle *indicator_node;
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 	struct as3645a_config cfg;
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142
 
..
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@@ -492,25 +479,25 @@
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 }
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480
 
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 static int as3645a_parse_node(struct as3645a *flash,
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-			      struct as3645a_names *names,
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-			      struct device_node *node)
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+			      struct fwnode_handle *fwnode)
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 {
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 	struct as3645a_config *cfg = &flash->cfg;
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-	struct device_node *child;
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-	const char *name;
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+	struct fwnode_handle *child;
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 	int rval;
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-	for_each_child_of_node(node, child) {
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+	fwnode_for_each_child_node(fwnode, child) {
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 		u32 id = 0;
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-		of_property_read_u32(child, "reg", &id);
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+		fwnode_property_read_u32(child, "reg", &id);
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492
 
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 		switch (id) {
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 		case AS_LED_FLASH:
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-			flash->flash_node = of_node_get(child);
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+			flash->flash_node = child;
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+			fwnode_handle_get(child);
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 			break;
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 		case AS_LED_INDICATOR:
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-			flash->indicator_node = of_node_get(child);
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+			flash->indicator_node = child;
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+			fwnode_handle_get(child);
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 			break;
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 		default:
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 			dev_warn(&flash->client->dev,
..
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@@ -524,42 +511,35 @@
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 		return -ENODEV;
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 	}
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513
 
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-	rval = of_property_read_string(flash->flash_node, "label", &name);
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-	if (!rval)
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-		strlcpy(names->flash, name, sizeof(names->flash));
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-	else
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-		snprintf(names->flash, sizeof(names->flash),
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-			 "%s:flash", node->name);
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-
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-	rval = of_property_read_u32(flash->flash_node, "flash-timeout-us",
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-				    &cfg->flash_timeout_us);
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+	rval = fwnode_property_read_u32(flash->flash_node, "flash-timeout-us",
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+					&cfg->flash_timeout_us);
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 	if (rval < 0) {
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 		dev_err(&flash->client->dev,
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 			"can't read flash-timeout-us property for flash\n");
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 		goto out_err;
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 	}
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-	rval = of_property_read_u32(flash->flash_node, "flash-max-microamp",
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-				    &cfg->flash_max_ua);
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+	rval = fwnode_property_read_u32(flash->flash_node, "flash-max-microamp",
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+					&cfg->flash_max_ua);
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 	if (rval < 0) {
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 		dev_err(&flash->client->dev,
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 			"can't read flash-max-microamp property for flash\n");
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 		goto out_err;
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 	}
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-	rval = of_property_read_u32(flash->flash_node, "led-max-microamp",
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-				    &cfg->assist_max_ua);
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+	rval = fwnode_property_read_u32(flash->flash_node, "led-max-microamp",
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+					&cfg->assist_max_ua);
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 	if (rval < 0) {
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 		dev_err(&flash->client->dev,
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 			"can't read led-max-microamp property for flash\n");
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 		goto out_err;
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 	}
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-	of_property_read_u32(flash->flash_node, "voltage-reference",
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-			     &cfg->voltage_reference);
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+	fwnode_property_read_u32(flash->flash_node, "voltage-reference",
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+				 &cfg->voltage_reference);
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540
 
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-	of_property_read_u32(flash->flash_node, "ams,input-max-microamp",
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-			     &cfg->peak);
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+	fwnode_property_read_u32(flash->flash_node, "ams,input-max-microamp",
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+				 &cfg->peak);
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 	cfg->peak = AS_PEAK_mA_TO_REG(cfg->peak);
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 	if (!flash->indicator_node) {
..
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@@ -569,15 +549,10 @@
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 		goto out_err;
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 	}
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-	rval = of_property_read_string(flash->indicator_node, "label", &name);
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-	if (!rval)
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-		strlcpy(names->indicator, name, sizeof(names->indicator));
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-	else
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-		snprintf(names->indicator, sizeof(names->indicator),
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-			 "%s:indicator", node->name);
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-	rval = of_property_read_u32(flash->indicator_node, "led-max-microamp",
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-				    &cfg->indicator_max_ua);
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+	rval = fwnode_property_read_u32(flash->indicator_node,
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+					"led-max-microamp",
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+					&cfg->indicator_max_ua);
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 	if (rval < 0) {
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 		dev_err(&flash->client->dev,
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 			"can't read led-max-microamp property for indicator\n");
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@@ -587,27 +562,31 @@
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 	return 0;
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563
 
589
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 out_err:
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-	of_node_put(flash->flash_node);
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-	of_node_put(flash->indicator_node);
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+	fwnode_handle_put(flash->flash_node);
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+	fwnode_handle_put(flash->indicator_node);
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567
 
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 	return rval;
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569
 }
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570
 
596
-static int as3645a_led_class_setup(struct as3645a *flash,
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-				   struct as3645a_names *names)
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+static int as3645a_led_class_setup(struct as3645a *flash)
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572
 {
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 	struct led_classdev *fled_cdev = &flash->fled.led_cdev;
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574
 	struct led_classdev *iled_cdev = &flash->iled_cdev;
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+	struct led_init_data init_data = {};
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 	struct led_flash_setting *cfg;
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 	int rval;
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578
 
604
-	iled_cdev->name = names->indicator;
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579
 	iled_cdev->brightness_set_blocking = as3645a_set_indicator_brightness;
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580
 	iled_cdev->max_brightness =
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581
 		flash->cfg.indicator_max_ua / AS_INDICATOR_INTENSITY_STEP;
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582
 	iled_cdev->flags = LED_CORE_SUSPENDRESUME;
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583
 
610
-	rval = led_classdev_register(&flash->client->dev, iled_cdev);
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+	init_data.fwnode = flash->indicator_node;
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+	init_data.devicename = AS_NAME;
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+	init_data.default_label = "indicator";
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+
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+	rval = led_classdev_register_ext(&flash->client->dev, iled_cdev,
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+					 &init_data);
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 	if (rval < 0)
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 		return rval;
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..
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@@ -625,7 +604,6 @@
625
604
 
626
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 	flash->fled.ops = &as3645a_led_flash_ops;
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606
 
628
-	fled_cdev->name = names->flash;
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 	fled_cdev->brightness_set_blocking = as3645a_set_assist_brightness;
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 	/* Value 0 is off in LED class. */
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 	fled_cdev->max_brightness =
..
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@@ -633,14 +611,22 @@
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 				       flash->cfg.assist_max_ua) + 1;
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 	fled_cdev->flags = LED_DEV_CAP_FLASH | LED_CORE_SUSPENDRESUME;
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-	rval = led_classdev_flash_register(&flash->client->dev, &flash->fled);
637
-	if (rval) {
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-		led_classdev_unregister(iled_cdev);
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-		dev_err(&flash->client->dev,
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-			"led_classdev_flash_register() failed, error %d\n",
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-			rval);
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-	}
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+	init_data.fwnode = flash->flash_node;
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+	init_data.devicename = AS_NAME;
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+	init_data.default_label = "flash";
643
617
 
618
+	rval = led_classdev_flash_register_ext(&flash->client->dev,
619
+					       &flash->fled, &init_data);
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+	if (rval)
621
+		goto out_err;
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+
623
+	return rval;
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+
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+out_err:
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+	led_classdev_unregister(iled_cdev);
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+	dev_err(&flash->client->dev,
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+		"led_classdev_flash_register() failed, error %d\n",
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+		rval);
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 	return rval;
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631
 }
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..
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@@ -665,18 +651,19 @@
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 		},
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 	};
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-	strlcpy(cfg.dev_name, led->name, sizeof(cfg.dev_name));
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-	strlcpy(cfgind.dev_name, flash->iled_cdev.name, sizeof(cfg.dev_name));
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+	strlcpy(cfg.dev_name, led->dev->kobj.name, sizeof(cfg.dev_name));
655
+	strlcpy(cfgind.dev_name, flash->iled_cdev.dev->kobj.name,
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+		sizeof(cfgind.dev_name));
670
657
 
671
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 	flash->vf = v4l2_flash_init(
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-		&flash->client->dev, of_fwnode_handle(flash->flash_node),
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-		&flash->fled, NULL, &cfg);
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+		&flash->client->dev, flash->flash_node, &flash->fled, NULL,
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+		&cfg);
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 	if (IS_ERR(flash->vf))
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 		return PTR_ERR(flash->vf);
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663
 
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 	flash->vfind = v4l2_flash_indicator_init(
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-		&flash->client->dev, of_fwnode_handle(flash->indicator_node),
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-		&flash->iled_cdev, &cfgind);
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+		&flash->client->dev, flash->indicator_node, &flash->iled_cdev,
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+		&cfgind);
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 	if (IS_ERR(flash->vfind)) {
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 		v4l2_flash_release(flash->vf);
682
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 		return PTR_ERR(flash->vfind);
..
..
@@ -687,11 +674,10 @@
687
674
 
688
675
 static int as3645a_probe(struct i2c_client *client)
689
676
 {
690
-	struct as3645a_names names;
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677
 	struct as3645a *flash;
692
678
 	int rval;
693
679
 
694
-	if (client->dev.of_node == NULL)
680
+	if (!dev_fwnode(&client->dev))
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 		return -ENODEV;
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682
 
697
683
 	flash = devm_kzalloc(&client->dev, sizeof(*flash), GFP_KERNEL);
..
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@@ -700,7 +686,7 @@
700
686
 
701
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 	flash->client = client;
702
688
 
703
-	rval = as3645a_parse_node(flash, &names, client->dev.of_node);
689
+	rval = as3645a_parse_node(flash, dev_fwnode(&client->dev));
704
690
 	if (rval < 0)
705
691
 		return rval;
706
692
 
..
..
@@ -715,7 +701,7 @@
715
701
 	if (rval)
716
702
 		goto out_mutex_destroy;
717
703
 
718
-	rval = as3645a_led_class_setup(flash, &names);
704
+	rval = as3645a_led_class_setup(flash);
719
705
 	if (rval)
720
706
 		goto out_mutex_destroy;
721
707
 
..
..
@@ -732,8 +718,8 @@
732
718
 	mutex_destroy(&flash->mutex);
733
719
 
734
720
 out_put_nodes:
735
-	of_node_put(flash->flash_node);
736
-	of_node_put(flash->indicator_node);
721
+	fwnode_handle_put(flash->flash_node);
722
+	fwnode_handle_put(flash->indicator_node);
737
723
 
738
724
 	return rval;
739
725
 }
..
..
@@ -752,8 +738,8 @@
752
738
 
753
739
 	mutex_destroy(&flash->mutex);
754
740
 
755
-	of_node_put(flash->flash_node);
756
-	of_node_put(flash->indicator_node);
741
+	fwnode_handle_put(flash->flash_node);
742
+	fwnode_handle_put(flash->indicator_node);
757
743
 
758
744
 	return 0;
759
745
 }