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Keep the backlight off while the lid is closed.

This commit is contained in:
jmcneill 2018-05-10 13:11:21 +00:00
parent 1d47c1e1e5
commit eec5e9247e
1 changed files with 33 additions and 3 deletions
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36
sys/dev/fdt/pwm_backlight.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: pwm_backlight.c,v 1.3 2018/05/07 12:58:58 jmcneill Exp $ */
/* $NetBSD: pwm_backlight.c,v 1.4 2018/05/10 13:11:21 jmcneill Exp $ */
/*-
* Copyright (c) 2018 Jared McNeill <jmcneill@invisible.ca>
@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: pwm_backlight.c,v 1.3 2018/05/07 12:58:58 jmcneill Exp $");
__KERNEL_RCSID(0, "$NetBSD: pwm_backlight.c,v 1.4 2018/05/10 13:11:21 jmcneill Exp $");
#include <sys/param.h>
#include <sys/bus.h>
@ -50,6 +50,8 @@ struct pwm_backlight_softc {
u_int sc_nlevels;
char *sc_levelstr;
bool sc_lid_state;
};
static int pwm_backlight_match(device_t, cfdata_t, void *);
@ -122,6 +124,8 @@ pwm_backlight_attach(device_t parent, device_t self, void *aux)
aprint_verbose(">");
aprint_normal("\n");
sc->sc_lid_state = true;
if (of_getprop_uint32(phandle, "default-brightness-level", &default_level) == 0) {
/* set the default level now */
pwm_backlight_set(sc, default_level);
@ -247,7 +251,7 @@ pwm_backlight_display_on(device_t dev)
{
struct pwm_backlight_softc * const sc = device_private(dev);
if (sc->sc_pin)
if (sc->sc_pin && sc->sc_lid_state)
fdtbus_gpio_write(sc->sc_pin, 1);
}
@ -260,6 +264,28 @@ pwm_backlight_display_off(device_t dev)
fdtbus_gpio_write(sc->sc_pin, 0);
}
static void
pwm_backlight_chassis_lid_open(device_t dev)
{
struct pwm_backlight_softc * const sc = device_private(dev);
sc->sc_lid_state = true;
if (sc->sc_pin)
fdtbus_gpio_write(sc->sc_pin, 1);
}
static void
pwm_backlight_chassis_lid_close(device_t dev)
{
struct pwm_backlight_softc * const sc = device_private(dev);
sc->sc_lid_state = false;
if (sc->sc_pin)
fdtbus_gpio_write(sc->sc_pin, 0);
}
static void
pwm_backlight_display_brightness_up(device_t dev)
{
@ -289,6 +315,10 @@ pwm_backlight_pmf_init(struct pwm_backlight_softc *sc)
pwm_backlight_display_on, true);
pmf_event_register(sc->sc_dev, PMFE_DISPLAY_OFF,
pwm_backlight_display_off, true);
pmf_event_register(sc->sc_dev, PMFE_CHASSIS_LID_OPEN,
pwm_backlight_chassis_lid_open, true);
pmf_event_register(sc->sc_dev, PMFE_CHASSIS_LID_CLOSE,
pwm_backlight_chassis_lid_close, true);
pmf_event_register(sc->sc_dev, PMFE_DISPLAY_BRIGHTNESS_UP,
pwm_backlight_display_brightness_up, true);
pmf_event_register(sc->sc_dev, PMFE_DISPLAY_BRIGHTNESS_DOWN,