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Subject[PATCH v8 14/20] tools: gpio: port lsgpio to v2 uAPI
Date
Port the lsgpio tool to the latest GPIO uAPI.

Signed-off-by: Kent Gibson <warthog618@gmail.com>
---
tools/gpio/lsgpio.c | 60 ++++++++++++++++++++++++++++-----------------
1 file changed, 38 insertions(+), 22 deletions(-)

diff --git a/tools/gpio/lsgpio.c b/tools/gpio/lsgpio.c
index b08d7a5e779b..deda38244026 100644
--- a/tools/gpio/lsgpio.c
+++ b/tools/gpio/lsgpio.c
@@ -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);
+ }
}

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");
--
2.28.0
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