shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-06 02:50:49 +09:00
Code Issues Packages Projects Releases Wiki Activity

tools: testing: selftests: add iomux instance

Browse Source 
Add a new instance for rockchip pinctrl to do selftest, and the userland
can set or get the iomux to one pin directly.

Build the iomux by gcc:
    xx-gcc tools/testing/selftests/rkpinctrl/iomux.c -o iomux

Tested on rk3588-evb1:

[root@RK3588:/]# iomux 1 15 1
[root@RK3588:/]# iomux 1 15
mux get (GPIO1-15) = 1

[root@RK3588:/]# iomux 1 15 2
[root@RK3588:/]# iomux 1 15
mux get (GPIO1-15) = 2

Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
Change-Id: Ic5271b25e55e1023caa5580346ffb82fe7a4cb65
This commit is contained in:
Jianqun Xu
2022-03-15 12:54:30 +08:00
committed by Tao Huang
parent 1d7ef69052
commit f8e84013a5
2 changed files with 113 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
tools/testing/selftests/rkpinctrl/Makefile Normal file
View File

@@ -0,0 +1,6 @@
# SPDX-License-Identifier: GPL-2.0
CFLAGS += -static -O3 -Wl,-no-as-needed -Wall
TEST_GEN_PROGS = iomux
include ../lib.mk

107
tools/testing/selftests/rkpinctrl/iomux.c Normal file
View File

@@ -0,0 +1,107 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2022 Rockchip Electronics Co. Ltd.
*/
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <sys/types.h>
#include "../../../../include/uapi/linux/rk-iomux.h"
static int rk_iomux_ioctl_set(int fd, int bank, int pin, int mux)
{
struct iomux_ioctl_data data = {
.bank = bank,
.pin = pin,
.mux = mux,
};
int ret;
if (!fd)
return -EINVAL;
ret = ioctl(fd, IOMUX_IOC_MUX_SET, &data);
if (ret < 0) {
perror("fail to ioctl");
return ret;
}
return 0;
}
static int rk_iomux_ioctl_get(int fd, int bank, int pin, int *mux)
{
struct iomux_ioctl_data data = {
.bank = bank,
.pin = pin,
};
int ret;
if (!fd)
return -EINVAL;
ret = ioctl(fd, IOMUX_IOC_MUX_GET, &data);
if (ret < 0) {
perror("fail to ioctl");
return ret;
}
*mux = data.mux;
return 0;
}
static void usage(void)
{
printf("%s:\n"
"set iomux:\n"
"iomux [bank index] [pin index] [mux value]\n"
"get iomux:\n"
"iomux [bank index] [pin index]\n",
__func__);
}
int main(int argc, char *argv[])
{
const char *name = "/dev/iomux";
int fd;
int bank, pin, mux;
int ret;
if ((argc != 3) && (argc != 4)) {
usage();
return -1;
}
bank = atoi(argv[1]);
pin = atoi(argv[2]);
fd = open(name, O_RDWR);
if (fd < 0) {
printf("open %s failed!\n", name);
return fd;
}
if (argc == 4) {
mux = atoi(argv[3]);
ret = rk_iomux_ioctl_set(fd, bank, pin, mux);
if (ret)
goto err;
} else if (argc == 3) {
ret = rk_iomux_ioctl_get(fd, bank, pin, &mux);
if (ret)
goto err;
printf("mux get (GPIO%d-%d) = %d\n", bank, pin, mux);
}
err:
close(fd);
return 0;
}