[src/trunk]: src/sys/arch/arm/amlogic When acquiring a GPIO, disable any conf...

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

details:   https://anonhg.NetBSD.org/src/rev/69c080f497af
branches:  trunk
changeset: 449291:69c080f497af
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Sat Mar 02 11:15:55 2019 +0000

description:
When acquiring a GPIO, disable any conflicting pinctrl function groups

diffstat:

 sys/arch/arm/amlogic/meson_pinctrl.c |  15 +++++++++++++--
 1 files changed, 13 insertions(+), 2 deletions(-)

diffs (45 lines):

diff -r 6ce424784de8 -r 69c080f497af sys/arch/arm/amlogic/meson_pinctrl.c
--- a/sys/arch/arm/amlogic/meson_pinctrl.c      Sat Mar 02 03:21:17 2019 +0000
+++ b/sys/arch/arm/amlogic/meson_pinctrl.c      Sat Mar 02 11:15:55 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: meson_pinctrl.c,v 1.3 2019/02/25 19:30:17 jmcneill Exp $ */
+/* $NetBSD: meson_pinctrl.c,v 1.4 2019/03/02 11:15:55 jmcneill Exp $ */
 
 /*-
  * Copyright (c) 2019 Jared D. McNeill <jmcneill%invisible.ca@localhost>
@@ -29,7 +29,7 @@
 #include "opt_soc.h"
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: meson_pinctrl.c,v 1.3 2019/02/25 19:30:17 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: meson_pinctrl.c,v 1.4 2019/03/02 11:15:55 jmcneill Exp $");
 
 #include <sys/param.h>
 #include <sys/bus.h>
@@ -321,8 +321,10 @@
 {
        struct meson_pinctrl_softc * const sc = device_private(dev);
        const struct meson_pinctrl_gpio *pin_def;
+       const struct meson_pinctrl_group *group;
        struct meson_pinctrl_gpio_pin *gpin;
        const u_int *gpio = data;
+       u_int n, bank;
 
        if (len != 12)
                return NULL;
@@ -334,6 +336,15 @@
        if (pin_def == NULL)
                return NULL;
 
+       /* Disable conflicting groups */
+       for (n = 0; n < sc->sc_conf->ngroups; n++) {
+               group = &sc->sc_conf->groups[n];
+               for (bank = 0; bank < group->nbank; bank++) {
+                       if (group->bank[bank] == pin_def->id)
+                               meson_pinctrl_set_group(sc, group, false);
+               }
+       }
+
        mutex_enter(&sc->sc_lock);
        meson_pinctrl_pin_dir(sc, pin_def, flags);
        mutex_exit(&sc->sc_lock);