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tools: gpio: port lsgpio to v2 uAPI 

Port the lsgpio 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 2020-09-28 08:28:01 +08:00 committed by Bartosz Golaszewski
parent b234d233fe
commit 3c333c4704
1 changed files with 38 additions and 22 deletions
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60
tools/gpio/lsgpio.c
View File

@ -25,57 +25,73 @@
struct gpio_flag {
char *name;
unsigned long mask;
unsigned long long mask;
};
struct gpio_flag flagnames[] = {
{
.name = "kernel",
.mask = GPIOLINE_FLAG_KERNEL,
.name = "used",
.mask = GPIO_V2_LINE_FLAG_USED,
},
{
.name = "input",
.mask = GPIO_V2_LINE_FLAG_INPUT,
},
{
.name = "output",
.mask = GPIOLINE_FLAG_IS_OUT,
.mask = GPIO_V2_LINE_FLAG_OUTPUT,
},
{
.name = "active-low",
.mask = GPIOLINE_FLAG_ACTIVE_LOW,
.mask = GPIO_V2_LINE_FLAG_ACTIVE_LOW,
},
{
.name = "open-drain",
.mask = GPIOLINE_FLAG_OPEN_DRAIN,
.mask = GPIO_V2_LINE_FLAG_OPEN_DRAIN,
},
{
.name = "open-source",
.mask = GPIOLINE_FLAG_OPEN_SOURCE,
.mask = GPIO_V2_LINE_FLAG_OPEN_SOURCE,
},
{
.name = "pull-up",
.mask = GPIOLINE_FLAG_BIAS_PULL_UP,
.mask = GPIO_V2_LINE_FLAG_BIAS_PULL_UP,
},
{
.name = "pull-down",
.mask = GPIOLINE_FLAG_BIAS_PULL_DOWN,
.mask = GPIO_V2_LINE_FLAG_BIAS_PULL_DOWN,
},
{
.name = "bias-disabled",
.mask = GPIOLINE_FLAG_BIAS_DISABLE,
.mask = GPIO_V2_LINE_FLAG_BIAS_DISABLED,
},
};
void print_flags(unsigned long flags)
static void print_attributes(struct gpio_v2_line_info *info)
{
int i;
int printed = 0;
const char *field_format = "%s";
for (i = 0; i < ARRAY_SIZE(flagnames); i++) {
if (flags & flagnames[i].mask) {
if (printed)
fprintf(stdout, " ");
fprintf(stdout, "%s", flagnames[i].name);
printed++;
if (info->flags & flagnames[i].mask) {
fprintf(stdout, field_format, flagnames[i].name);
field_format = ", %s";
}
}
if ((info->flags & GPIO_V2_LINE_FLAG_EDGE_RISING) &&
(info->flags & GPIO_V2_LINE_FLAG_EDGE_FALLING))
fprintf(stdout, field_format, "both-edges");
else if (info->flags & GPIO_V2_LINE_FLAG_EDGE_RISING)
fprintf(stdout, field_format, "rising-edge");
else if (info->flags & GPIO_V2_LINE_FLAG_EDGE_FALLING)
fprintf(stdout, field_format, "falling-edge");
for (i = 0; i < info->num_attrs; i++) {
if (info->attrs[i].id == GPIO_V2_LINE_ATTR_ID_DEBOUNCE)
fprintf(stdout, ", debounce_period=%dusec",
info->attrs[0].debounce_period_us);
}
}
int list_device(const char *device_name)
@ -109,18 +125,18 @@ int list_device(const char *device_name)
/* Loop over the lines and print info */
for (i = 0; i < cinfo.lines; i++) {
struct gpioline_info linfo;
struct gpio_v2_line_info linfo;
memset(&linfo, 0, sizeof(linfo));
linfo.line_offset = i;
linfo.offset = i;
ret = ioctl(fd, GPIO_GET_LINEINFO_IOCTL, &linfo);
ret = ioctl(fd, GPIO_V2_GET_LINEINFO_IOCTL, &linfo);
if (ret == -1) {
ret = -errno;
perror("Failed to issue LINEINFO IOCTL\n");
goto exit_close_error;
}
fprintf(stdout, "\tline %2d:", linfo.line_offset);
fprintf(stdout, "\tline %2d:", linfo.offset);
if (linfo.name[0])
fprintf(stdout, " \"%s\"", linfo.name);
else
@ -131,7 +147,7 @@ int list_device(const char *device_name)
fprintf(stdout, " unused");
if (linfo.flags) {
fprintf(stdout, " [");
print_flags(linfo.flags);
print_attributes(&linfo);
fprintf(stdout, "]");
}
fprintf(stdout, "\n");