mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-24 10:00:51 +07:00
tools: gpio: port gpio-event-mon to v2 uAPI
Port the gpio-event-mon tool to the latest GPIO uAPI. Signed-off-by: Kent Gibson <warthog618@gmail.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
This commit is contained in:
Kent Gibson
Bartosz Golaszewski
parent
7ff6d1d25a
commit
0acda979df
@ -23,17 +23,16 @@
|
||||
#include <sys/ioctl.h>
|
||||
#include <sys/types.h>
|
||||
#include <linux/gpio.h>
|
||||
#include "gpio-utils.h"
|
||||
|
||||
int monitor_device(const char *device_name,
|
||||
unsigned int line,
|
||||
uint32_t handleflags,
|
||||
uint32_t eventflags,
|
||||
struct gpio_v2_line_config *config,
|
||||
unsigned int loops)
|
||||
{
|
||||
struct gpioevent_request req;
|
||||
struct gpiohandle_data data;
|
||||
struct gpio_v2_line_values values;
|
||||
char *chrdev_name;
|
||||
int fd;
|
||||
int cfd, lfd;
|
||||
int ret;
|
||||
int i = 0;
|
||||
|
||||
@ -41,44 +40,39 @@ int monitor_device(const char *device_name,
|
||||
if (ret < 0)
|
||||
return -ENOMEM;
|
||||
|
||||
fd = open(chrdev_name, 0);
|
||||
if (fd == -1) {
|
||||
cfd = open(chrdev_name, 0);
|
||||
if (cfd == -1) {
|
||||
ret = -errno;
|
||||
fprintf(stderr, "Failed to open %s\n", chrdev_name);
|
||||
goto exit_free_name;
|
||||
}
|
||||
|
||||
req.lineoffset = line;
|
||||
req.handleflags = handleflags;
|
||||
req.eventflags = eventflags;
|
||||
strcpy(req.consumer_label, "gpio-event-mon");
|
||||
|
||||
ret = ioctl(fd, GPIO_GET_LINEEVENT_IOCTL, &req);
|
||||
if (ret == -1) {
|
||||
ret = -errno;
|
||||
fprintf(stderr, "Failed to issue GET EVENT "
|
||||
"IOCTL (%d)\n",
|
||||
ret);
|
||||
goto exit_close_error;
|
||||
}
|
||||
ret = gpiotools_request_line(device_name, &line, 1, config,
|
||||
"gpio-event-mon");
|
||||
if (ret < 0)
|
||||
goto exit_device_close;
|
||||
else
|
||||
lfd = ret;
|
||||
|
||||
/* Read initial states */
|
||||
ret = ioctl(req.fd, GPIOHANDLE_GET_LINE_VALUES_IOCTL, &data);
|
||||
if (ret == -1) {
|
||||
ret = -errno;
|
||||
fprintf(stderr, "Failed to issue GPIOHANDLE GET LINE "
|
||||
"VALUES IOCTL (%d)\n",
|
||||
values.mask = 1;
|
||||
values.bits = 0;
|
||||
ret = gpiotools_get_values(lfd, &values);
|
||||
if (ret < 0) {
|
||||
fprintf(stderr,
|
||||
"Failed to issue GPIO LINE GET VALUES IOCTL (%d)\n",
|
||||
ret);
|
||||
goto exit_close_error;
|
||||
goto exit_line_close;
|
||||
}
|
||||
|
||||
fprintf(stdout, "Monitoring line %d on %s\n", line, device_name);
|
||||
fprintf(stdout, "Initial line value: %d\n", data.values[0]);
|
||||
fprintf(stdout, "Initial line value: %d\n",
|
||||
gpiotools_test_bit(values.bits, 0));
|
||||
|
||||
while (1) {
|
||||
struct gpioevent_data event;
|
||||
struct gpio_v2_line_event event;
|
||||
|
||||
ret = read(req.fd, &event, sizeof(event));
|
||||
ret = read(lfd, &event, sizeof(event));
|
||||
if (ret == -1) {
|
||||
if (errno == -EAGAIN) {
|
||||
fprintf(stderr, "nothing available\n");
|
||||
@ -96,12 +90,14 @@ int monitor_device(const char *device_name,
|
||||
ret = -EIO;
|
||||
break;
|
||||
}
|
||||
fprintf(stdout, "GPIO EVENT %llu: ", event.timestamp);
|
||||
fprintf(stdout, "GPIO EVENT at %llu on line %d (%d|%d) ",
|
||||
event.timestamp_ns, event.offset, event.line_seqno,
|
||||
event.seqno);
|
||||
switch (event.id) {
|
||||
case GPIOEVENT_EVENT_RISING_EDGE:
|
||||
case GPIO_V2_LINE_EVENT_RISING_EDGE:
|
||||
fprintf(stdout, "rising edge");
|
||||
break;
|
||||
case GPIOEVENT_EVENT_FALLING_EDGE:
|
||||
case GPIO_V2_LINE_EVENT_FALLING_EDGE:
|
||||
fprintf(stdout, "falling edge");
|
||||
break;
|
||||
default:
|
||||
@ -114,8 +110,11 @@ int monitor_device(const char *device_name,
|
||||
break;
|
||||
}
|
||||
|
||||
exit_close_error:
|
||||
if (close(fd) == -1)
|
||||
exit_line_close:
|
||||
if (close(lfd) == -1)
|
||||
perror("Failed to close line file");
|
||||
exit_device_close:
|
||||
if (close(cfd) == -1)
|
||||
perror("Failed to close GPIO character device file");
|
||||
exit_free_name:
|
||||
free(chrdev_name);
|
||||
@ -140,15 +139,20 @@ void print_usage(void)
|
||||
);
|
||||
}
|
||||
|
||||
#define EDGE_FLAGS \
|
||||
(GPIO_V2_LINE_FLAG_EDGE_RISING | \
|
||||
GPIO_V2_LINE_FLAG_EDGE_FALLING)
|
||||
|
||||
int main(int argc, char **argv)
|
||||
{
|
||||
const char *device_name = NULL;
|
||||
unsigned int line = -1;
|
||||
unsigned int loops = 0;
|
||||
uint32_t handleflags = GPIOHANDLE_REQUEST_INPUT;
|
||||
uint32_t eventflags = 0;
|
||||
struct gpio_v2_line_config config;
|
||||
int c;
|
||||
|
||||
memset(&config, 0, sizeof(config));
|
||||
config.flags = GPIO_V2_LINE_FLAG_INPUT;
|
||||
while ((c = getopt(argc, argv, "c:n:o:dsrf?")) != -1) {
|
||||
switch (c) {
|
||||
case 'c':
|
||||
@ -161,16 +165,16 @@ int main(int argc, char **argv)
|
||||
line = strtoul(optarg, NULL, 10);
|
||||
break;
|
||||
case 'd':
|
||||
handleflags |= GPIOHANDLE_REQUEST_OPEN_DRAIN;
|
||||
config.flags |= GPIO_V2_LINE_FLAG_OPEN_DRAIN;
|
||||
break;
|
||||
case 's':
|
||||
handleflags |= GPIOHANDLE_REQUEST_OPEN_SOURCE;
|
||||
config.flags |= GPIO_V2_LINE_FLAG_OPEN_SOURCE;
|
||||
break;
|
||||
case 'r':
|
||||
eventflags |= GPIOEVENT_REQUEST_RISING_EDGE;
|
||||
config.flags |= GPIO_V2_LINE_FLAG_EDGE_RISING;
|
||||
break;
|
||||
case 'f':
|
||||
eventflags |= GPIOEVENT_REQUEST_FALLING_EDGE;
|
||||
config.flags |= GPIO_V2_LINE_FLAG_EDGE_FALLING;
|
||||
break;
|
||||
case '?':
|
||||
print_usage();
|
||||
@ -182,11 +186,10 @@ int main(int argc, char **argv)
|
||||
print_usage();
|
||||
return -1;
|
||||
}
|
||||
if (!eventflags) {
|
||||
if (!(config.flags & EDGE_FLAGS)) {
|
||||
printf("No flags specified, listening on both rising and "
|
||||
"falling edges\n");
|
||||
eventflags = GPIOEVENT_REQUEST_BOTH_EDGES;
|
||||
config.flags |= EDGE_FLAGS;
|
||||
}
|
||||
return monitor_device(device_name, line, handleflags,
|
||||
eventflags, loops);
|
||||
return monitor_device(device_name, line, &config, loops);
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user