[src/trunk]: src/sys/dev/gpio gpio: make GPIOREAD return also the symbolic na...

[tnn <tnn%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/81fd5bd4c2e3
branches:  trunk
changeset: 966237:81fd5bd4c2e3
user:      tnn <tnn%NetBSD.org@localhost>
date:      Sun Oct 20 09:35:18 2019 +0000

description:
gpio: make GPIOREAD return also the symbolic name of the pin, if it is set

diffstat:

 sys/dev/gpio/gpio.c |  14 +++++++++-----
 1 files changed, 9 insertions(+), 5 deletions(-)

diffs (42 lines):

diff -r 6737b6b588eb -r 81fd5bd4c2e3 sys/dev/gpio/gpio.c
--- a/sys/dev/gpio/gpio.c       Sun Oct 20 08:29:38 2019 +0000
+++ b/sys/dev/gpio/gpio.c       Sun Oct 20 09:35:18 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: gpio.c,v 1.63 2019/10/15 00:13:53 chs Exp $ */
+/* $NetBSD: gpio.c,v 1.64 2019/10/20 09:35:18 tnn Exp $ */
 /*     $OpenBSD: gpio.c,v 1.6 2006/01/14 12:33:49 grange Exp $ */
 
 /*
@@ -19,7 +19,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: gpio.c,v 1.63 2019/10/15 00:13:53 chs Exp $");
+__KERNEL_RCSID(0, "$NetBSD: gpio.c,v 1.64 2019/10/20 09:35:18 tnn Exp $");
 
 /*
  * General Purpose Input/Output framework.
@@ -722,9 +722,8 @@
                req = data;
 
                if (req->gp_name[0] != '\0')
-                       pin = gpio_pinbyname(sc, req->gp_name);
-               else
-                       pin = req->gp_pin;
+                       req->gp_pin = gpio_pinbyname(sc, req->gp_name);
+               pin = req->gp_pin;
 
                if (pin < 0 || pin >= sc->sc_npins)
                        return EINVAL;
@@ -736,6 +735,11 @@
 
                /* return read value */
                req->gp_value = gpiobus_pin_read(gc, pin);
+               LIST_FOREACH(nm, &sc->sc_names, gp_next)
+                       if (nm->gp_pin == pin) {
+                               strlcpy(req->gp_name, nm->gp_name, GPIOMAXNAME);
+                               break;
+                       }
                break;
        case GPIOWRITE:
                if ((flag & FWRITE) == 0)