NetBSD-5.0.2/sys/arch/hpcsh/dev/psh3pwr.c
/* $NetBSD: psh3pwr.c,v 1.3 2008/03/31 15:49:29 kiyohara Exp $ */
/*
* Copyright (c) 2005, 2007 KIYOHARA Takashi
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: psh3pwr.c,v 1.3 2008/03/31 15:49:29 kiyohara Exp $");
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <sys/systm.h>
#include <sys/callout.h>
#include <machine/config_hook.h>
#include <machine/platid.h>
#include <machine/platid_mask.h>
#include <dev/apm/apmbios.h>
#include <sh3/exception.h>
#include <sh3/intcreg.h>
#include <sh3/pfcreg.h>
#include <sh3/dev/adcvar.h>
#ifdef PSH3PWR_DEBUG
#define DPRINTF(arg) printf arg
#else
#define DPRINTF(arg) ((void)0)
#endif
/* A/D covnerter channels to get power stats from */
#define ADC_CHANNEL_BATTERY 3
/* On/Off bit for Green LED. pin 7 in SH7709 GPIO port H. */
#define PSH3_GREEN_LED_ON 0x80
/*
* XXXX:
* WindowsCE seem to be using this as a flag.
* pin 6 in SH7709 GPIO port SCPDR.
*/
#define PSH3PWR_PLUG_OUT 0x40
static inline int __attribute__((__always_inline__))
psh3pwr_ac_is_off(void)
{
return _reg_read_1(SH7709_SCPDR) & PSH3PWR_PLUG_OUT;
}
/*
* Empirical range of battery values.
* Thanks to Joseph Heenan for measurements.
*/
#define PSH3PWR_BATTERY_MIN 630
#define PSH3PWR_BATTERY_CRITICAL 635
#define PSH3PWR_BATTERY_LOW 645
#define PSH3PWR_BATTERY_FULL 910 /* can be slightly more */
struct psh3pwr_softc {
device_t sc_dev;
void *sc_ih_pin;
void *sc_ih_pout;
};
static int psh3pwr_match(device_t, struct cfdata *, void *);
static void psh3pwr_attach(device_t, device_t, void *);
CFATTACH_DECL_NEW(psh3pwr, sizeof(struct psh3pwr_softc),
psh3pwr_match, psh3pwr_attach, NULL, NULL);
static int psh3pwr_intr_plug_out(void *);
static int psh3pwr_intr_plug_in(void *);
static void psh3pwr_sleep(void *);
static int psh3pwr_apm_getpower_hook(void *, int, long, void *);
static int psh3pwr_get_battery(void);
static int
psh3pwr_match(device_t parent, struct cfdata *cfp, void *aux)
{
if (!platid_match(&platid, &platid_mask_MACH_HITACHI_PERSONA))
return 0;
if (strcmp(cfp->cf_name, "psh3pwr") != 0)
return 0;
return 1;
}
static void
psh3pwr_attach(device_t parent, device_t self, void *aux)
{
extern void (*__sleep_func)(void *);
extern void *__sleep_ctx;
struct psh3pwr_softc *sc = device_private(self);
uint8_t phdr;
sc->sc_dev = self;
/* arrange for hpcapm to call us when power status is requested */
config_hook(CONFIG_HOOK_GET, CONFIG_HOOK_ACADAPTER,
CONFIG_HOOK_EXCLUSIVE, psh3pwr_apm_getpower_hook, sc);
config_hook(CONFIG_HOOK_GET, CONFIG_HOOK_CHARGE,
CONFIG_HOOK_EXCLUSIVE, psh3pwr_apm_getpower_hook, sc);
config_hook(CONFIG_HOOK_GET, CONFIG_HOOK_BATTERYVAL,
CONFIG_HOOK_EXCLUSIVE, psh3pwr_apm_getpower_hook, sc);
/* regisiter sleep function to APM */
__sleep_func = psh3pwr_sleep;
__sleep_ctx = self;
phdr = _reg_read_1(SH7709_PHDR);
_reg_write_1(SH7709_PHDR, phdr | PSH3_GREEN_LED_ON);
aprint_naive("\n");
aprint_normal("\n");
sc->sc_ih_pout = intc_intr_establish(SH7709_INTEVT2_IRQ0,
IST_EDGE, IPL_TTY, psh3pwr_intr_plug_out, sc);
sc->sc_ih_pin = intc_intr_establish(SH7709_INTEVT2_IRQ1,
IST_EDGE, IPL_TTY, psh3pwr_intr_plug_in, sc);
/* XXXX: WindowsCE sets this bit. */
aprint_normal_dev(self, "plug status: %s\n",
psh3pwr_ac_is_off() ? "out" : "in");
}
static int
psh3pwr_intr_plug_out(void *self)
{
struct psh3pwr_softc *sc __attribute__((__unused__)) =
(struct psh3pwr_softc *)self;
uint8_t irr0, scpdr;
irr0 = _reg_read_1(SH7709_IRR0);
if (!(irr0 & IRR0_IRQ0)) {
return 0;
}
_reg_write_1(SH7709_IRR0, irr0 & ~IRR0_IRQ0);
/* XXXX: WindowsCE sets this bit. */
scpdr = _reg_read_1(SH7709_SCPDR);
_reg_write_1(SH7709_SCPDR, scpdr | PSH3PWR_PLUG_OUT);
DPRINTF(("%s: plug out\n", device_xname(&sc->sc_dev)));
return 1;
}
static int
psh3pwr_intr_plug_in(void *self)
{
struct psh3pwr_softc *sc __attribute__((__unused__)) =
(struct psh3pwr_softc *)self;
uint8_t irr0, scpdr;
irr0 = _reg_read_1(SH7709_IRR0);
if (!(irr0 & IRR0_IRQ1))
return 0;
_reg_write_1(SH7709_IRR0, irr0 & ~IRR0_IRQ1);
/* XXXX: WindowsCE sets this bit. */
scpdr = _reg_read_1(SH7709_SCPDR);
_reg_write_1(SH7709_SCPDR, scpdr & ~PSH3PWR_PLUG_OUT);
DPRINTF(("%s: plug in\n", device_xname(&sc->sc_dev)));
return 1;
}
void
psh3pwr_sleep(void *self)
{
/* splhigh on entry */
extern void pfckbd_poll_hitachi_power(void);
uint8_t phdr;
phdr = _reg_read_1(SH7709_PHDR);
_reg_write_1(SH7709_PHDR, phdr & ~PSH3_GREEN_LED_ON);
pfckbd_poll_hitachi_power();
phdr = _reg_read_1(SH7709_PHDR);
_reg_write_1(SH7709_PHDR, phdr | PSH3_GREEN_LED_ON);
}
static int
psh3pwr_apm_getpower_hook(void *ctx, int type, long id, void *msg)
{
/* struct psh0pwr_softc * const sc = ctx; */
int * const pval = msg;
int battery, state;
if (type != CONFIG_HOOK_GET)
return EINVAL;
switch (id) {
case CONFIG_HOOK_ACADAPTER:
*pval = psh3pwr_ac_is_off() ? APM_AC_OFF : APM_AC_ON;
return 0;
case CONFIG_HOOK_CHARGE:
battery = psh3pwr_get_battery();
if (battery < PSH3PWR_BATTERY_CRITICAL)
state = APM_BATT_FLAG_CRITICAL;
else if (battery < PSH3PWR_BATTERY_LOW)
state = APM_BATT_FLAG_LOW;
else
state = APM_BATT_FLAG_HIGH; /* XXX? */
*pval = state;
return 0;
case CONFIG_HOOK_BATTERYVAL:
battery = psh3pwr_get_battery();
if (battery > PSH3PWR_BATTERY_FULL)
state = 100;
else
state = 100 * (battery - PSH3PWR_BATTERY_MIN) /
(PSH3PWR_BATTERY_FULL - PSH3PWR_BATTERY_MIN);
*pval = state;
return 0;
}
return EINVAL;
}
static int
psh3pwr_get_battery(void)
{
int battery;
int s;
s = spltty();
battery = adc_sample_channel(ADC_CHANNEL_BATTERY);
splx(s);
return battery;
}