gpio: store reflect the label to userspace
The gpio_chip label is useful for userspace to understand what
kind of GPIO chip it is dealing with. Let's store a copy of this
label in the gpio_device, add it to the struct passed to userspace
for GPIO_GET_CHIPINFO_IOCTL and modify lsgpio to show it.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/tools/gpio/lsgpio.c b/tools/gpio/lsgpio.c
index 4cfe29d..692233f 100644
--- a/tools/gpio/lsgpio.c
+++ b/tools/gpio/lsgpio.c
@@ -54,8 +54,8 @@
goto free_chrdev_name;
}
- fprintf(stdout, "GPIO chip: %s, %u GPIO lines\n",
- cinfo.name, cinfo.lines);
+ fprintf(stdout, "GPIO chip: %s, \"%s\", %u GPIO lines\n",
+ cinfo.name, cinfo.label, cinfo.lines);
if (close(fd) == -1) {
ret = -errno;