From 95099d4622f8cb224d94e314c7a8e0df60b13f87 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Sat, 09 Dec 2023 08:38:01 +0000
Subject: [PATCH] enable docker ppp
---
kernel/drivers/leds/led-core.c | 166 +++++++++++++++++++++++++++++++++++++++++++++++++++++-
1 files changed, 161 insertions(+), 5 deletions(-)
diff --git a/kernel/drivers/leds/led-core.c b/kernel/drivers/leds/led-core.c
index ede4fa0..c4e780b 100644
--- a/kernel/drivers/leds/led-core.c
+++ b/kernel/drivers/leds/led-core.c
@@ -1,14 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* LED Class Core
*
* Copyright 2005-2006 Openedhand Ltd.
*
* Author: Richard Purdie <rpurdie@openedhand.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
*/
#include <linux/kernel.h>
@@ -16,7 +12,11 @@
#include <linux/list.h>
#include <linux/module.h>
#include <linux/mutex.h>
+#include <linux/of.h>
+#include <linux/property.h>
#include <linux/rwsem.h>
+#include <linux/slab.h>
+#include <uapi/linux/uleds.h>
#include "leds.h"
DECLARE_RWSEM(leds_list_lock);
@@ -24,6 +24,20 @@
LIST_HEAD(leds_list);
EXPORT_SYMBOL_GPL(leds_list);
+
+const char * const led_colors[LED_COLOR_ID_MAX] = {
+ [LED_COLOR_ID_WHITE] = "white",
+ [LED_COLOR_ID_RED] = "red",
+ [LED_COLOR_ID_GREEN] = "green",
+ [LED_COLOR_ID_BLUE] = "blue",
+ [LED_COLOR_ID_AMBER] = "amber",
+ [LED_COLOR_ID_VIOLET] = "violet",
+ [LED_COLOR_ID_YELLOW] = "yellow",
+ [LED_COLOR_ID_IR] = "ir",
+ [LED_COLOR_ID_MULTI] = "multicolor",
+ [LED_COLOR_ID_RGB] = "rgb",
+};
+EXPORT_SYMBOL_GPL(led_colors);
static int __led_set_brightness(struct led_classdev *led_cdev,
enum led_brightness value)
@@ -310,6 +324,31 @@
}
EXPORT_SYMBOL_GPL(led_update_brightness);
+u32 *led_get_default_pattern(struct led_classdev *led_cdev, unsigned int *size)
+{
+ struct fwnode_handle *fwnode = led_cdev->dev->fwnode;
+ u32 *pattern;
+ int count;
+
+ count = fwnode_property_count_u32(fwnode, "led-pattern");
+ if (count < 0)
+ return NULL;
+
+ pattern = kcalloc(count, sizeof(*pattern), GFP_KERNEL);
+ if (!pattern)
+ return NULL;
+
+ if (fwnode_property_read_u32_array(fwnode, "led-pattern", pattern, count)) {
+ kfree(pattern);
+ return NULL;
+ }
+
+ *size = count;
+
+ return pattern;
+}
+EXPORT_SYMBOL_GPL(led_get_default_pattern);
+
/* Caller must ensure led_cdev->led_access held */
void led_sysfs_disable(struct led_classdev *led_cdev)
{
@@ -327,3 +366,120 @@
led_cdev->flags &= ~LED_SYSFS_DISABLE;
}
EXPORT_SYMBOL_GPL(led_sysfs_enable);
+
+static void led_parse_fwnode_props(struct device *dev,
+ struct fwnode_handle *fwnode,
+ struct led_properties *props)
+{
+ int ret;
+
+ if (!fwnode)
+ return;
+
+ if (fwnode_property_present(fwnode, "label")) {
+ ret = fwnode_property_read_string(fwnode, "label", &props->label);
+ if (ret)
+ dev_err(dev, "Error parsing 'label' property (%d)\n", ret);
+ return;
+ }
+
+ if (fwnode_property_present(fwnode, "color")) {
+ ret = fwnode_property_read_u32(fwnode, "color", &props->color);
+ if (ret)
+ dev_err(dev, "Error parsing 'color' property (%d)\n", ret);
+ else if (props->color >= LED_COLOR_ID_MAX)
+ dev_err(dev, "LED color identifier out of range\n");
+ else
+ props->color_present = true;
+ }
+
+
+ if (!fwnode_property_present(fwnode, "function"))
+ return;
+
+ ret = fwnode_property_read_string(fwnode, "function", &props->function);
+ if (ret) {
+ dev_err(dev,
+ "Error parsing 'function' property (%d)\n",
+ ret);
+ }
+
+ if (!fwnode_property_present(fwnode, "function-enumerator"))
+ return;
+
+ ret = fwnode_property_read_u32(fwnode, "function-enumerator",
+ &props->func_enum);
+ if (ret) {
+ dev_err(dev,
+ "Error parsing 'function-enumerator' property (%d)\n",
+ ret);
+ } else {
+ props->func_enum_present = true;
+ }
+}
+
+int led_compose_name(struct device *dev, struct led_init_data *init_data,
+ char *led_classdev_name)
+{
+ struct led_properties props = {};
+ struct fwnode_handle *fwnode = init_data->fwnode;
+ const char *devicename = init_data->devicename;
+
+ /* We want to label LEDs that can produce full range of colors
+ * as RGB, not multicolor */
+ BUG_ON(props.color == LED_COLOR_ID_MULTI);
+
+ if (!led_classdev_name)
+ return -EINVAL;
+
+ led_parse_fwnode_props(dev, fwnode, &props);
+
+ if (props.label) {
+ /*
+ * If init_data.devicename is NULL, then it indicates that
+ * DT label should be used as-is for LED class device name.
+ * Otherwise the label is prepended with devicename to compose
+ * the final LED class device name.
+ */
+ if (!devicename) {
+ strscpy(led_classdev_name, props.label,
+ LED_MAX_NAME_SIZE);
+ } else {
+ snprintf(led_classdev_name, LED_MAX_NAME_SIZE, "%s:%s",
+ devicename, props.label);
+ }
+ } else if (props.function || props.color_present) {
+ char tmp_buf[LED_MAX_NAME_SIZE];
+
+ if (props.func_enum_present) {
+ snprintf(tmp_buf, LED_MAX_NAME_SIZE, "%s:%s-%d",
+ props.color_present ? led_colors[props.color] : "",
+ props.function ?: "", props.func_enum);
+ } else {
+ snprintf(tmp_buf, LED_MAX_NAME_SIZE, "%s:%s",
+ props.color_present ? led_colors[props.color] : "",
+ props.function ?: "");
+ }
+ if (init_data->devname_mandatory) {
+ snprintf(led_classdev_name, LED_MAX_NAME_SIZE, "%s:%s",
+ devicename, tmp_buf);
+ } else {
+ strscpy(led_classdev_name, tmp_buf, LED_MAX_NAME_SIZE);
+
+ }
+ } else if (init_data->default_label) {
+ if (!devicename) {
+ dev_err(dev, "Legacy LED naming requires devicename segment");
+ return -EINVAL;
+ }
+ snprintf(led_classdev_name, LED_MAX_NAME_SIZE, "%s:%s",
+ devicename, init_data->default_label);
+ } else if (is_of_node(fwnode)) {
+ strscpy(led_classdev_name, to_of_node(fwnode)->name,
+ LED_MAX_NAME_SIZE);
+ } else
+ return -EINVAL;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(led_compose_name);
--
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