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/* $OpenBSD: panel.c,v 1.3 2014/07/11 08:18:31 guenther Exp $ */
/*
* Copyright (c) 2012 Miodrag Vallat.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/proc.h>
#include <sys/signalvar.h>
#include <sys/timeout.h>
#include <machine/autoconf.h>
#include <mips64/archtype.h>
#include <machine/bus.h>
#include <sgi/hpc/iocreg.h>
#include <sgi/hpc/hpcreg.h>
#include <sgi/hpc/hpcvar.h>
#include <sgi/sgi/ip22.h>
#include "audio.h"
#include "wskbd.h"
extern int wskbd_set_mixervolume(long, long);
struct panel_softc {
struct device sc_dev;
bus_space_tag_t sc_iot;
bus_space_handle_t sc_ioh;
int sc_irq; /* irq number */
void *sc_ih; /* irq handler cookie */
struct timeout sc_repeat_tmo; /* polling timeout */
};
/* Repeat delays for volume buttons. */
#define PANEL_REPEAT_FIRST 400
#define PANEL_REPEAT_NEXT 100
int panel_match(struct device *, void *, void *);
void panel_attach(struct device *, struct device *, void *);
struct cfdriver panel_cd = {
NULL, "panel", DV_DULL
};
const struct cfattach panel_ca = {
sizeof(struct panel_softc), panel_match, panel_attach
};
int panel_intr(void *);
void panel_repeat(void *);
#if NAUDIO > 0 && NWSKBD > 0
void panel_volume_adjust(struct panel_softc *, uint8_t);
#endif
int
panel_match(struct device *parent, void *vcf, void *aux)
{
struct cfdata *cf = vcf;
struct hpc_attach_args *ha = aux;
if (strcmp(ha->ha_name, cf->cf_driver->cd_name) != 0)
return 0;
if (sys_config.system_type == SGI_IP20)
return 0;
return 1;
}
void
panel_attach(struct device *parent, struct device *self, void *aux)
{
struct panel_softc *sc = (struct panel_softc *)self;
struct hpc_attach_args *haa = aux;
sc->sc_iot = haa->ha_st;
if (bus_space_subregion(haa->ha_st, haa->ha_sh, haa->ha_devoff + 3, 1,
&sc->sc_ioh)) {
printf(": can't map registers\n");
return;
}
sc->sc_irq = haa->ha_irq;
sc->sc_ih = hpc_intr_establish(sc->sc_irq, IPL_BIO, panel_intr, sc,
sc->sc_dev.dv_xname);
if (sc->sc_ih == NULL) {
printf(": can't establish interrupt\n");
return;
}
if (sys_config.system_subtype == IP22_INDY)
printf(": power and volume buttons\n");
else
printf(": power button\n");
timeout_set(&sc->sc_repeat_tmo, panel_repeat, sc);
}
int
panel_intr(void *v)
{
struct panel_softc *sc = (struct panel_softc *)v;
uint8_t reg, ack;
extern int allowpowerdown;
reg = bus_space_read_1(sc->sc_iot, sc->sc_ioh, 0);
ack = IOC_PANEL_POWER_STATE;
if (sys_config.system_subtype == IP22_INDIGO2 ||
(reg & IOC_PANEL_POWER_IRQ) == 0)
ack |= IOC_PANEL_POWER_IRQ;
if (sys_config.system_subtype == IP22_INDY) {
if ((reg & IOC_PANEL_VDOWN_IRQ) == 0)
ack |= IOC_PANEL_VDOWN_IRQ;
if ((reg & IOC_PANEL_VUP_IRQ) == 0)
ack |= IOC_PANEL_VUP_IRQ;
}
bus_space_write_1(sc->sc_iot, sc->sc_ioh, 0, ack);
bus_space_barrier(sc->sc_iot, sc->sc_ioh, 0, 1,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
/*
* Panel interrupts are latched for about 300 msec after being
* acked, and not until all buttons are depressed.
* We need to temporary disable the interrupt and switch to polling,
* until the interrupt can be enabled again.
*/
hpc_intr_disable(sc->sc_ih);
/*
* If the power button is down, try and issue a shutdown immediately
* (if allowed).
*/
if (sys_config.system_subtype == IP22_INDIGO2 ||
(reg & IOC_PANEL_POWER_IRQ) == 0) {
if (allowpowerdown == 1) {
allowpowerdown = 0;
prsignal(initprocess, SIGUSR2);
}
}
#if NAUDIO > 0 && NWSKBD > 0
/*
* If any of the volume buttons is down, update volume.
*/
if (sys_config.system_subtype == IP22_INDY)
panel_volume_adjust(sc, reg);
#endif
timeout_add_msec(&sc->sc_repeat_tmo, PANEL_REPEAT_FIRST);
return 1;
}
void
panel_repeat(void *v)
{
struct panel_softc *sc = (struct panel_softc *)v;
uint8_t reg;
reg = bus_space_read_1(sc->sc_iot, sc->sc_ioh, 0);
#if NAUDIO > 0 && NWSKBD > 0
/*
* Volume button autorepeat.
*/
if (sys_config.system_subtype == IP22_INDY)
panel_volume_adjust(sc, reg);
#endif
if (hpc_is_intr_pending(sc->sc_irq)) {
/*
* Keep acking everything to get the interrupt finally
* unlatched.
*/
bus_space_write_1(sc->sc_iot, sc->sc_ioh, 0,
IOC_PANEL_POWER_STATE | IOC_PANEL_POWER_IRQ |
IOC_PANEL_VDOWN_IRQ | IOC_PANEL_VDOWN_HOLD |
IOC_PANEL_VUP_IRQ | IOC_PANEL_VUP_HOLD);
bus_space_barrier(sc->sc_iot, sc->sc_ioh, 0, 1,
BUS_SPACE_BARRIER_READ | BUS_SPACE_BARRIER_WRITE);
timeout_add_msec(&sc->sc_repeat_tmo, PANEL_REPEAT_NEXT);
} else {
hpc_intr_enable(sc->sc_ih);
}
}
#if NAUDIO > 0 && NWSKBD > 0
void
panel_volume_adjust(struct panel_softc *sc, uint8_t reg)
{
long adjust;
switch (reg & (IOC_PANEL_VDOWN_IRQ | IOC_PANEL_VUP_IRQ)) {
case 0: /* both buttons pressed: mute */
adjust = 0;
break;
case IOC_PANEL_VDOWN_IRQ: /* up button pressed */
adjust = 1;
break;
case IOC_PANEL_VDUP_IRQ: /* down button pressed */
adjust = -1;
break;
case IOC_PANEL_VDOWN_IRQ | IOC_PANEL_VDUP_IRQ:
return;
}
wskbd_set_mixervolume(adjust, 1);
}
#endif
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