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Set initial regulator states at attach time

This commit is contained in:
jmcneill 2019-01-19 20:51:12 +00:00
parent 50f51e36d6
commit 77ff9a803a
1 changed files with 11 additions and 2 deletions
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13
sys/dev/fdt/gpioregulator.c
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@ -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>
@ -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 @@ gpioregulator_attach(device_t parent, device_t self, void *aux)
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 @@ gpioregulator_attach(device_t parent, device_t self, void *aux)
}
}
/* "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);