[src/trunk]: src/sys/dev/fdt Set initial regulator states at attach time

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

details:   https://anonhg.NetBSD.org/src/rev/dabf1406e8a9
branches:  trunk
changeset: 838476:dabf1406e8a9
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Sat Jan 19 20:51:12 2019 +0000

description:
Set initial regulator states at attach time

diffstat:

 sys/dev/fdt/gpioregulator.c |  13 +++++++++++--
 1 files changed, 11 insertions(+), 2 deletions(-)

diffs (41 lines):

diff -r f1c7ad43bf39 -r dabf1406e8a9 sys/dev/fdt/gpioregulator.c
--- a/sys/dev/fdt/gpioregulator.c       Sat Jan 19 20:50:48 2019 +0000
+++ b/sys/dev/fdt/gpioregulator.c       Sat Jan 19 20:51:12 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: gpioregulator.c,v 1.1 2017/08/13 18:27:31 jmcneill Exp $ */
+/* $NetBSD: gpioregulator.c,v 1.2 2019/01/19 20:51:12 jmcneill Exp $ */
 
 /*-
  * Copyright (c) 2017 Jared McNeill <jmcneill%invisible.ca@localhost>
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: gpioregulator.c,v 1.1 2017/08/13 18:27:31 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: gpioregulator.c,v 1.2 2019/01/19 20:51:12 jmcneill Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -100,6 +100,7 @@
        const int phandle = faa->faa_phandle;
        const uint32_t *pstates;
        uint32_t mask;
+       u_int gpios_states;
        char *name;
        int len, n;
 
@@ -163,6 +164,14 @@
                }
        }
 
+       /* "gpios-states" property */
+       if (of_getprop_uint32(phandle, "gpios-states", &gpios_states) != 0)
+               gpios_states = 0;
+
+       /* Set initial state */
+       for (n = 0; n < sc->sc_npins; n++)
+               fdtbus_gpio_write(sc->sc_pins[n], (gpios_states >> n) & 1);
+
        fdtbus_register_regulator_controller(self, phandle,
            &gpioregulator_funcs);