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2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb

 kernel/tools/gpio/lsgpio.c
..
..
@@ -1,11 +1,8 @@
1
+// SPDX-License-Identifier: GPL-2.0-only
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2
 /*
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3
  * lsgpio - example on how to list the GPIO lines on a system
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4
  *
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  * Copyright (C) 2015 Linus Walleij
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- *
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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 version 2 as published by
8
- * the Free Software Foundation.
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6
  *
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7
  * Usage:
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8
  *	lsgpio <-n device-name>
..
..
@@ -28,44 +25,72 @@
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25
 
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 struct gpio_flag {
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27
 	char *name;
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-	unsigned long mask;
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+	unsigned long long mask;
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 };
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30
 
34
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 struct gpio_flag flagnames[] = {
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 	{
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-		.name = "kernel",
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-		.mask = GPIOLINE_FLAG_KERNEL,
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+		.name = "used",
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+		.mask = GPIO_V2_LINE_FLAG_USED,
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+	},
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+	{
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+		.name = "input",
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+		.mask = GPIO_V2_LINE_FLAG_INPUT,
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 	},
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 	{
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 		.name = "output",
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-		.mask = GPIOLINE_FLAG_IS_OUT,
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+		.mask = GPIO_V2_LINE_FLAG_OUTPUT,
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 	},
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 	{
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 		.name = "active-low",
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-		.mask = GPIOLINE_FLAG_ACTIVE_LOW,
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+		.mask = GPIO_V2_LINE_FLAG_ACTIVE_LOW,
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 	},
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 	{
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 		.name = "open-drain",
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-		.mask = GPIOLINE_FLAG_OPEN_DRAIN,
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+		.mask = GPIO_V2_LINE_FLAG_OPEN_DRAIN,
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 	},
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 	{
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 		.name = "open-source",
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-		.mask = GPIOLINE_FLAG_OPEN_SOURCE,
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+		.mask = GPIO_V2_LINE_FLAG_OPEN_SOURCE,
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+	},
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+	{
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+		.name = "pull-up",
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+		.mask = GPIO_V2_LINE_FLAG_BIAS_PULL_UP,
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+	},
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+	{
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+		.name = "pull-down",
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+		.mask = GPIO_V2_LINE_FLAG_BIAS_PULL_DOWN,
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+	},
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+	{
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+		.name = "bias-disabled",
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+		.mask = GPIO_V2_LINE_FLAG_BIAS_DISABLED,
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 	},
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68
 };
56
69
 
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-void print_flags(unsigned long flags)
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+static void print_attributes(struct gpio_v2_line_info *info)
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 {
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 	int i;
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-	int printed = 0;
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+	const char *field_format = "%s";
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74
 
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 	for (i = 0; i < ARRAY_SIZE(flagnames); i++) {
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-		if (flags & flagnames[i].mask) {
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-			if (printed)
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-				fprintf(stdout, " ");
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-			fprintf(stdout, "%s", flagnames[i].name);
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-			printed++;
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+		if (info->flags & flagnames[i].mask) {
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+			fprintf(stdout, field_format, flagnames[i].name);
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+			field_format = ", %s";
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 		}
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+	}
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+
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+	if ((info->flags & GPIO_V2_LINE_FLAG_EDGE_RISING) &&
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+	    (info->flags & GPIO_V2_LINE_FLAG_EDGE_FALLING))
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+		fprintf(stdout, field_format, "both-edges");
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+	else if (info->flags & GPIO_V2_LINE_FLAG_EDGE_RISING)
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+		fprintf(stdout, field_format, "rising-edge");
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+	else if (info->flags & GPIO_V2_LINE_FLAG_EDGE_FALLING)
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+		fprintf(stdout, field_format, "falling-edge");
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+
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+	for (i = 0; i < info->num_attrs; i++) {
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+		if (info->attrs[i].id == GPIO_V2_LINE_ATTR_ID_DEBOUNCE)
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+			fprintf(stdout, ", debounce_period=%dusec",
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+				info->attrs[i].debounce_period_us);
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 	}
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 }
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96
 
..
..
@@ -85,7 +110,7 @@
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 	if (fd == -1) {
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 		ret = -errno;
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 		fprintf(stderr, "Failed to open %s\n", chrdev_name);
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-		goto exit_close_error;
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+		goto exit_free_name;
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114
 	}
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115
 
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 	/* Inspect this GPIO chip */
..
..
@@ -100,18 +125,18 @@
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125
 
101
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 	/* Loop over the lines and print info */
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 	for (i = 0; i < cinfo.lines; i++) {
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-		struct gpioline_info linfo;
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+		struct gpio_v2_line_info linfo;
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129
 
105
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 		memset(&linfo, 0, sizeof(linfo));
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-		linfo.line_offset = i;
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+		linfo.offset = i;
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132
 
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-		ret = ioctl(fd, GPIO_GET_LINEINFO_IOCTL, &linfo);
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+		ret = ioctl(fd, GPIO_V2_GET_LINEINFO_IOCTL, &linfo);
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 		if (ret == -1) {
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 			ret = -errno;
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 			perror("Failed to issue LINEINFO IOCTL\n");
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 			goto exit_close_error;
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 		}
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-		fprintf(stdout, "\tline %2d:", linfo.line_offset);
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+		fprintf(stdout, "\tline %2d:", linfo.offset);
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140
 		if (linfo.name[0])
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141
 			fprintf(stdout, " \"%s\"", linfo.name);
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 		else
..
..
@@ -122,7 +147,7 @@
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 			fprintf(stdout, " unused");
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148
 		if (linfo.flags) {
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149
 			fprintf(stdout, " [");
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-			print_flags(linfo.flags);
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+			print_attributes(&linfo);
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 			fprintf(stdout, "]");
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 		}
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 		fprintf(stdout, "\n");
..
..
@@ -132,6 +157,7 @@
132
157
 exit_close_error:
133
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 	if (close(fd) == -1)
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 		perror("Failed to close GPIO character device file");
160
+exit_free_name:
135
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 	free(chrdev_name);
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 	return ret;
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 }