From 08f87f769b595151be1afeff53e144f543faa614 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 06 Dec 2023 09:51:13 +0000
Subject: [PATCH] add dts config
---
kernel/tools/gpio/gpio-hammer.c | 65 +++++++++++++++++---------------
1 files changed, 35 insertions(+), 30 deletions(-)
diff --git a/kernel/tools/gpio/gpio-hammer.c b/kernel/tools/gpio/gpio-hammer.c
index 3da5462..54fdf59 100644
--- a/kernel/tools/gpio/gpio-hammer.c
+++ b/kernel/tools/gpio/gpio-hammer.c
@@ -1,11 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* gpio-hammer - example swiss army knife to shake GPIO lines on a system
*
* Copyright (C) 2016 Linus Walleij
- *
- * 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.
*
* Usage:
* gpio-hammer -n <device-name> -o <offset1> -o <offset2>
@@ -25,39 +22,46 @@
#include <linux/gpio.h>
#include "gpio-utils.h"
-int hammer_device(const char *device_name, unsigned int *lines, int nlines,
+int hammer_device(const char *device_name, unsigned int *lines, int num_lines,
unsigned int loops)
{
- struct gpiohandle_data data;
+ struct gpio_v2_line_values values;
+ struct gpio_v2_line_config config;
char swirr[] = "-\\|/";
int fd;
int ret;
int i, j;
unsigned int iteration = 0;
- memset(&data.values, 0, sizeof(data.values));
- ret = gpiotools_request_linehandle(device_name, lines, nlines,
- GPIOHANDLE_REQUEST_OUTPUT, &data,
- "gpio-hammer");
+ memset(&config, 0, sizeof(config));
+ config.flags = GPIO_V2_LINE_FLAG_OUTPUT;
+
+ ret = gpiotools_request_line(device_name, lines, num_lines,
+ &config, "gpio-hammer");
if (ret < 0)
goto exit_error;
else
fd = ret;
- ret = gpiotools_get_values(fd, &data);
+ values.mask = 0;
+ values.bits = 0;
+ for (i = 0; i < num_lines; i++)
+ gpiotools_set_bit(&values.mask, i);
+
+ ret = gpiotools_get_values(fd, &values);
if (ret < 0)
goto exit_close_error;
fprintf(stdout, "Hammer lines [");
- for (i = 0; i < nlines; i++) {
+ for (i = 0; i < num_lines; i++) {
fprintf(stdout, "%d", lines[i]);
- if (i != (nlines - 1))
+ if (i != (num_lines - 1))
fprintf(stdout, ", ");
}
fprintf(stdout, "] on %s, initial states: [", device_name);
- for (i = 0; i < nlines; i++) {
- fprintf(stdout, "%d", data.values[i]);
- if (i != (nlines - 1))
+ for (i = 0; i < num_lines; i++) {
+ fprintf(stdout, "%d", gpiotools_test_bit(values.bits, i));
+ if (i != (num_lines - 1))
fprintf(stdout, ", ");
}
fprintf(stdout, "]\n");
@@ -66,27 +70,28 @@
j = 0;
while (1) {
/* Invert all lines so we blink */
- for (i = 0; i < nlines; i++)
- data.values[i] = !data.values[i];
+ for (i = 0; i < num_lines; i++)
+ gpiotools_change_bit(&values.bits, i);
- ret = gpiotools_set_values(fd, &data);
+ ret = gpiotools_set_values(fd, &values);
if (ret < 0)
goto exit_close_error;
/* Re-read values to get status */
- ret = gpiotools_get_values(fd, &data);
+ ret = gpiotools_get_values(fd, &values);
if (ret < 0)
goto exit_close_error;
fprintf(stdout, "[%c] ", swirr[j]);
j++;
- if (j == sizeof(swirr)-1)
+ if (j == sizeof(swirr) - 1)
j = 0;
fprintf(stdout, "[");
- for (i = 0; i < nlines; i++) {
- fprintf(stdout, "%d: %d", lines[i], data.values[i]);
- if (i != (nlines - 1))
+ for (i = 0; i < num_lines; i++) {
+ fprintf(stdout, "%d: %d", lines[i],
+ gpiotools_test_bit(values.bits, i));
+ if (i != (num_lines - 1))
fprintf(stdout, ", ");
}
fprintf(stdout, "]\r");
@@ -100,7 +105,7 @@
ret = 0;
exit_close_error:
- gpiotools_release_linehandle(fd);
+ gpiotools_release_line(fd);
exit_error:
return ret;
}
@@ -124,7 +129,7 @@
const char *device_name = NULL;
unsigned int lines[GPIOHANDLES_MAX];
unsigned int loops = 0;
- int nlines;
+ int num_lines;
int c;
int i;
@@ -156,16 +161,16 @@
if (i >= GPIOHANDLES_MAX) {
fprintf(stderr,
- "Only %d occurences of '-o' are allowed, %d were found\n",
+ "Only %d occurrences of '-o' are allowed, %d were found\n",
GPIOHANDLES_MAX, i + 1);
return -1;
}
- nlines = i;
+ num_lines = i;
- if (!device_name || !nlines) {
+ if (!device_name || !num_lines) {
print_usage();
return -1;
}
- return hammer_device(device_name, lines, nlines, loops);
+ return hammer_device(device_name, lines, num_lines, loops);
}
--
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