New generic I2C framework. Supports bit-bang and "intelligent" I2C
interface controllers (of varying intelligence levels). Contributed by Wasabi Systems, Inc. Primarily written by Steve Woodford, with some modification by me. (NOTE: "cvs ci" was missed on this directory during the initial checkin of the new I2C code.)
This commit is contained in:
thorpej
parent
2af80d899e
commit
2c0d381bd7
|
|
@ -1,10 +1,10 @@
|
||||||
# $NetBSD: files.iomd,v 1.2 2002/06/16 13:20:14 bjh21 Exp $
|
# $NetBSD: files.iomd,v 1.3 2003/10/06 16:11:19 thorpej Exp $
|
||||||
#
|
#
|
||||||
# IOMD-specific configuration data
|
# IOMD-specific configuration data
|
||||||
#
|
#
|
||||||
|
|
||||||
# IOMD device
|
# IOMD device
|
||||||
# parent to kbd, qms, opms, iic
|
# parent to kbd, qms, opms, iomdiic
|
||||||
# also provides irq and timer services
|
# also provides irq and timer services
|
||||||
device iomd {}
|
device iomd {}
|
||||||
attach iomd at mainbus
|
attach iomd at mainbus
|
||||||
|
|
@ -16,23 +16,10 @@ file arch/arm/iomd/iomd_irqhandler.c iomd
|
||||||
file arch/arm/iomd/iomd_fiq.S iomd
|
file arch/arm/iomd/iomd_fiq.S iomd
|
||||||
file arch/arm/iomd/iomd_dma.c iomd
|
file arch/arm/iomd/iomd_dma.c iomd
|
||||||
|
|
||||||
# IIC device
|
# I^2C bus (bit-banged through IOMD control register)
|
||||||
device iic { addr = -1 }
|
device iomdiic: i2cbus, i2c_bitbang
|
||||||
file arch/arm/iomd/iic.c iic needs-flag
|
attach iomdiic at iomd
|
||||||
|
file arch/arm/iomd/iomdiic.c iomdiic
|
||||||
attach iic at iomd with iic_iomd
|
|
||||||
file arch/arm/iomd/iic_iomd.c iic_iomd
|
|
||||||
file arch/arm/iomd/iomd_iic.S iic_iomd
|
|
||||||
|
|
||||||
# IIC based RTC
|
|
||||||
define todservice {}
|
|
||||||
device rtc : todservice
|
|
||||||
attach rtc at iic
|
|
||||||
file arch/arm/iomd/rtc.c rtc needs-flag
|
|
||||||
|
|
||||||
device todclock
|
|
||||||
attach todclock at todservice
|
|
||||||
file arch/arm/iomd/todclock.c todclock needs-count
|
|
||||||
|
|
||||||
# IOMD mouse devices
|
# IOMD mouse devices
|
||||||
# clock device
|
# clock device
|
||||||
|
|
|
||||||
|
|
@ -1,343 +0,0 @@
|
||||||
/* $NetBSD: iic.c,v 1.8 2003/07/15 00:24:44 lukem Exp $ */
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Copyright (c) 1994-1996 Mark Brinicombe.
|
|
||||||
* Copyright (c) 1994 Brini.
|
|
||||||
* All rights reserved.
|
|
||||||
*
|
|
||||||
* This code is derived from software written for Brini by Mark Brinicombe
|
|
||||||
*
|
|
||||||
* 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.
|
|
||||||
* 3. All advertising materials mentioning features or use of this software
|
|
||||||
* must display the following acknowledgement:
|
|
||||||
* This product includes software developed by Mark Brinicombe.
|
|
||||||
* 4. The name of the company nor the name of the author may be used to
|
|
||||||
* endorse or promote products derived from this software without specific
|
|
||||||
* prior written permission.
|
|
||||||
*
|
|
||||||
* THIS SOFTWARE IS PROVIDED BY BRINI ``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 BRINI OR CONTRIBUTORS 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.
|
|
||||||
*
|
|
||||||
* RiscBSD kernel project
|
|
||||||
*
|
|
||||||
* iic.c
|
|
||||||
*
|
|
||||||
* Routines to communicate with IIC devices
|
|
||||||
*
|
|
||||||
* Created : 13/10/94
|
|
||||||
*
|
|
||||||
* Based of kate/display/iiccontrol.c
|
|
||||||
*/
|
|
||||||
|
|
||||||
#include <sys/cdefs.h>
|
|
||||||
__KERNEL_RCSID(0, "$NetBSD: iic.c,v 1.8 2003/07/15 00:24:44 lukem Exp $");
|
|
||||||
|
|
||||||
#include <sys/param.h>
|
|
||||||
#include <sys/systm.h>
|
|
||||||
#include <sys/kernel.h>
|
|
||||||
#include <sys/conf.h>
|
|
||||||
#include <sys/malloc.h>
|
|
||||||
#include <sys/device.h>
|
|
||||||
#include <sys/event.h>
|
|
||||||
|
|
||||||
#include <machine/bus.h>
|
|
||||||
#include <machine/cpu.h>
|
|
||||||
|
|
||||||
#include <arm/cpufunc.h>
|
|
||||||
|
|
||||||
#include <arm/iomd/iic.h>
|
|
||||||
#include <arm/iomd/iicvar.h>
|
|
||||||
|
|
||||||
#include "locators.h"
|
|
||||||
|
|
||||||
/* Local function prototypes */
|
|
||||||
|
|
||||||
static int iic_getack __P((void));
|
|
||||||
static void iic_write_bit __P((int bit));
|
|
||||||
static int iic_write_byte __P((u_char value));
|
|
||||||
static u_char iic_read_byte __P((void));
|
|
||||||
static void iic_start_bit __P((void));
|
|
||||||
static void iic_stop_bit __P((void));
|
|
||||||
|
|
||||||
static int iicprint __P((void *aux, const char *name));
|
|
||||||
|
|
||||||
/* External functions that do the bit twiddling */
|
|
||||||
extern int iic_getstate __P((void));
|
|
||||||
extern void iic_set_state_and_ack __P((int, int));
|
|
||||||
extern void iic_set_state __P((int, int));
|
|
||||||
extern void iic_delay __P((int));
|
|
||||||
|
|
||||||
extern struct cfdriver iic_cd;
|
|
||||||
|
|
||||||
dev_type_open(iicopen);
|
|
||||||
dev_type_close(iicclose);
|
|
||||||
|
|
||||||
const struct cdevsw iic_cdevsw = {
|
|
||||||
iicopen, iicclose, noread, nowrite, noioctl,
|
|
||||||
nostop, notty, nopoll, nommap, nokqfilter,
|
|
||||||
};
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Main entry to IIC driver.
|
|
||||||
*/
|
|
||||||
|
|
||||||
int
|
|
||||||
iic_control(address, buffer, count)
|
|
||||||
u_char address;
|
|
||||||
u_char *buffer;
|
|
||||||
int count;
|
|
||||||
{
|
|
||||||
int loop;
|
|
||||||
|
|
||||||
/* Send the start bit */
|
|
||||||
|
|
||||||
iic_start_bit();
|
|
||||||
|
|
||||||
/* Send the address */
|
|
||||||
|
|
||||||
if (!iic_write_byte(address)) {
|
|
||||||
iic_stop_bit();
|
|
||||||
return(-1);
|
|
||||||
}
|
|
||||||
|
|
||||||
/* Read or write the data as required */
|
|
||||||
|
|
||||||
if ((address & 1) == 0) {
|
|
||||||
/* Write bytes */
|
|
||||||
for (loop = 0; loop < count; ++loop) {
|
|
||||||
if (!iic_write_byte(buffer[loop])) {
|
|
||||||
iic_stop_bit();
|
|
||||||
return(-1);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
else {
|
|
||||||
/* Read bytes */
|
|
||||||
for (loop = 0; loop < count; ++loop) {
|
|
||||||
buffer[loop] = iic_read_byte();
|
|
||||||
|
|
||||||
/* Send final acknowledge */
|
|
||||||
|
|
||||||
if (loop == (count - 1))
|
|
||||||
iic_write_bit(1);
|
|
||||||
else
|
|
||||||
iic_write_bit(0);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
/* Send stop bit */
|
|
||||||
|
|
||||||
iic_stop_bit();
|
|
||||||
|
|
||||||
return(0);
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
static int
|
|
||||||
iic_getack()
|
|
||||||
{
|
|
||||||
u_int oldirqstate;
|
|
||||||
int ack;
|
|
||||||
|
|
||||||
iic_set_state(1, 0);
|
|
||||||
oldirqstate = disable_interrupts(I32_bit);
|
|
||||||
iic_set_state_and_ack(1, 1);
|
|
||||||
ack = iic_getstate();
|
|
||||||
iic_set_state(1, 0);
|
|
||||||
restore_interrupts(oldirqstate);
|
|
||||||
|
|
||||||
return((ack & 1) == 0);
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
static void
|
|
||||||
iic_write_bit(bit)
|
|
||||||
int bit;
|
|
||||||
{
|
|
||||||
u_int oldirqstate;
|
|
||||||
|
|
||||||
iic_set_state(bit, 0);
|
|
||||||
oldirqstate = disable_interrupts(I32_bit);
|
|
||||||
iic_set_state_and_ack(bit, 1);
|
|
||||||
iic_set_state(bit, 0);
|
|
||||||
restore_interrupts(oldirqstate);
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
static int
|
|
||||||
iic_write_byte(value)
|
|
||||||
u_char value;
|
|
||||||
{
|
|
||||||
int loop;
|
|
||||||
int bit;
|
|
||||||
|
|
||||||
for (loop = 0x80; loop != 0; loop = loop >> 1) {
|
|
||||||
bit = ((value & loop) != 0);
|
|
||||||
iic_write_bit(bit);
|
|
||||||
}
|
|
||||||
|
|
||||||
return(iic_getack());
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
static u_char
|
|
||||||
iic_read_byte()
|
|
||||||
{
|
|
||||||
int loop;
|
|
||||||
u_char byte;
|
|
||||||
u_int oldirqstate;
|
|
||||||
|
|
||||||
iic_set_state(1,0);
|
|
||||||
|
|
||||||
byte = 0;
|
|
||||||
|
|
||||||
for (loop = 0; loop < 8; ++loop) {
|
|
||||||
oldirqstate = disable_interrupts(I32_bit);
|
|
||||||
iic_set_state_and_ack(1, 1);
|
|
||||||
byte = (byte << 1) + (iic_getstate() & 1);
|
|
||||||
iic_set_state(1, 0);
|
|
||||||
restore_interrupts(oldirqstate);
|
|
||||||
}
|
|
||||||
|
|
||||||
return(byte);
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
static void
|
|
||||||
iic_start_bit()
|
|
||||||
{
|
|
||||||
iic_set_state(1, 1);
|
|
||||||
iic_set_state(0, 1);
|
|
||||||
iic_delay(10);
|
|
||||||
iic_set_state(0, 0);
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
static void
|
|
||||||
iic_stop_bit()
|
|
||||||
{
|
|
||||||
iic_set_state(0, 1);
|
|
||||||
iic_set_state(1, 1);
|
|
||||||
}
|
|
||||||
|
|
||||||
/* driver structures */
|
|
||||||
|
|
||||||
/*
|
|
||||||
* int iicprint(void *aux, const char *name)
|
|
||||||
*
|
|
||||||
* print function for child device configuration
|
|
||||||
*/
|
|
||||||
|
|
||||||
static int
|
|
||||||
iicprint(aux, name)
|
|
||||||
void *aux;
|
|
||||||
const char *name;
|
|
||||||
{
|
|
||||||
struct iicbus_attach_args *iba = aux;
|
|
||||||
|
|
||||||
if (!name) {
|
|
||||||
if (iba->ib_addr)
|
|
||||||
aprint_normal(" addr 0x%02x", iba->ib_addr);
|
|
||||||
}
|
|
||||||
|
|
||||||
/* XXXX print flags */
|
|
||||||
return (QUIET);
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* iic search function
|
|
||||||
*
|
|
||||||
* search for devices that are children of the iic device
|
|
||||||
* fill out the attach arguments and call the probe and
|
|
||||||
* attach function (as required).
|
|
||||||
*
|
|
||||||
* Note: since the offsets of the devices need to be specified in the
|
|
||||||
* config file we ignore the FSTAT_STAR.
|
|
||||||
*/
|
|
||||||
|
|
||||||
int
|
|
||||||
iicsearch(parent, cf, aux)
|
|
||||||
struct device *parent;
|
|
||||||
struct cfdata *cf;
|
|
||||||
void *aux;
|
|
||||||
{
|
|
||||||
struct iic_softc *sc = (struct iic_softc *)parent;
|
|
||||||
struct iicbus_attach_args iba;
|
|
||||||
int tryagain;
|
|
||||||
|
|
||||||
do {
|
|
||||||
iba.ib_iic_softc = sc;
|
|
||||||
iba.ib_addr = cf->cf_loc[IICCF_ADDR];
|
|
||||||
iba.ib_aux = NULL;
|
|
||||||
|
|
||||||
tryagain = 0;
|
|
||||||
if (config_match(parent, cf, &iba) > 0) {
|
|
||||||
config_attach(parent, cf, &iba, iicprint);
|
|
||||||
/* tryagain = (cf->cf_fstate == FSTATE_STAR);*/
|
|
||||||
}
|
|
||||||
} while (tryagain);
|
|
||||||
|
|
||||||
return (0);
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Q: Do we really need a device interface ?
|
|
||||||
*/
|
|
||||||
|
|
||||||
int
|
|
||||||
iicopen(dev, flag, mode, p)
|
|
||||||
dev_t dev;
|
|
||||||
int flag;
|
|
||||||
int mode;
|
|
||||||
struct proc *p;
|
|
||||||
{
|
|
||||||
struct iic_softc *sc;
|
|
||||||
int unit = minor(dev);
|
|
||||||
|
|
||||||
if (unit >= iic_cd.cd_ndevs)
|
|
||||||
return(ENXIO);
|
|
||||||
|
|
||||||
sc = iic_cd.cd_devs[unit];
|
|
||||||
|
|
||||||
if (!sc) return(ENXIO);
|
|
||||||
|
|
||||||
if (sc->sc_flags & IIC_OPEN) return(EBUSY);
|
|
||||||
|
|
||||||
sc->sc_flags |= IIC_OPEN;
|
|
||||||
|
|
||||||
return(0);
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
int
|
|
||||||
iicclose(dev, flag, mode, p)
|
|
||||||
dev_t dev;
|
|
||||||
int flag;
|
|
||||||
int mode;
|
|
||||||
struct proc *p;
|
|
||||||
{
|
|
||||||
int unit = minor(dev);
|
|
||||||
struct iic_softc *sc = iic_cd.cd_devs[unit];
|
|
||||||
|
|
||||||
sc->sc_flags &= ~IIC_OPEN;
|
|
||||||
|
|
||||||
return(0);
|
|
||||||
}
|
|
||||||
|
|
||||||
/* End of iic.c */
|
|
||||||
|
|
@ -1,72 +0,0 @@
|
||||||
/* $NetBSD: iic.h,v 1.1 2001/10/05 22:27:40 reinoud Exp $ */
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Copyright (c) 1996 Mark Brinicombe.
|
|
||||||
* 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.
|
|
||||||
* 3. All advertising materials mentioning features or use of this software
|
|
||||||
* must display the following acknowledgement:
|
|
||||||
* This product includes software developed by Brini.
|
|
||||||
* 4. The name of the company nor the name of the author may be used to
|
|
||||||
* endorse or promote products derived from this software without specific
|
|
||||||
* prior written permission.
|
|
||||||
*
|
|
||||||
* THIS SOFTWARE IS PROVIDED BY BRINI ``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 BRINI OR CONTRIBUTORS 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.
|
|
||||||
*
|
|
||||||
* RiscBSD kernel project
|
|
||||||
*
|
|
||||||
* iic.h
|
|
||||||
*
|
|
||||||
* header file for IIC
|
|
||||||
*
|
|
||||||
* Created : 15/04/96
|
|
||||||
*/
|
|
||||||
|
|
||||||
/*
|
|
||||||
* IIC bus driver attach arguments
|
|
||||||
*/
|
|
||||||
|
|
||||||
#ifdef _KERNEL
|
|
||||||
|
|
||||||
struct iicbus_attach_args {
|
|
||||||
int ib_addr; /* i/o address */
|
|
||||||
void *ib_aux; /* driver specific */
|
|
||||||
void *ib_iic_softc; /* softc of iic parent */
|
|
||||||
};
|
|
||||||
|
|
||||||
#define iic_bitdelay 10
|
|
||||||
|
|
||||||
#define IIC_WRITE 0x00
|
|
||||||
#define IIC_READ 0x01
|
|
||||||
|
|
||||||
/* Prototypes for assembly functions */
|
|
||||||
|
|
||||||
void iic_set_state __P((int data, int clock));
|
|
||||||
void iic_set_state_and_ack __P((int data, int clock));
|
|
||||||
void iic_delay __P((int delay));
|
|
||||||
|
|
||||||
/* Prototype for kernel interface to IIC bus */
|
|
||||||
|
|
||||||
int iic_control __P((u_char address, u_char *buffer, int count));
|
|
||||||
|
|
||||||
#endif /* _KERNEL */
|
|
||||||
|
|
||||||
/* End of iic.h */
|
|
||||||
|
|
@ -1,110 +0,0 @@
|
||||||
/* $NetBSD: iic_iomd.c,v 1.6 2003/07/15 00:24:44 lukem Exp $ */
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Copyright (c) 1994-1996 Mark Brinicombe.
|
|
||||||
* Copyright (c) 1994 Brini.
|
|
||||||
* All rights reserved.
|
|
||||||
*
|
|
||||||
* This code is derived from software written for Brini by Mark Brinicombe
|
|
||||||
*
|
|
||||||
* 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.
|
|
||||||
* 3. All advertising materials mentioning features or use of this software
|
|
||||||
* must display the following acknowledgement:
|
|
||||||
* This product includes software developed by Mark Brinicombe.
|
|
||||||
* 4. The name of the company nor the name of the author may be used to
|
|
||||||
* endorse or promote products derived from this software without specific
|
|
||||||
* prior written permission.
|
|
||||||
*
|
|
||||||
* THIS SOFTWARE IS PROVIDED BY BRINI ``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 BRINI OR CONTRIBUTORS 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.
|
|
||||||
*
|
|
||||||
* RiscBSD kernel project
|
|
||||||
*
|
|
||||||
* iic.c
|
|
||||||
*
|
|
||||||
* Routines to communicate with IIC devices
|
|
||||||
*
|
|
||||||
* Created : 13/10/94
|
|
||||||
*
|
|
||||||
* Based of kate/display/iiccontrol.c
|
|
||||||
*/
|
|
||||||
|
|
||||||
#include <sys/cdefs.h>
|
|
||||||
__KERNEL_RCSID(0, "$NetBSD: iic_iomd.c,v 1.6 2003/07/15 00:24:44 lukem Exp $");
|
|
||||||
|
|
||||||
#include <sys/param.h>
|
|
||||||
#include <sys/systm.h>
|
|
||||||
#include <sys/kernel.h>
|
|
||||||
#include <sys/device.h>
|
|
||||||
|
|
||||||
#include <machine/bus.h>
|
|
||||||
#include <machine/intr.h>
|
|
||||||
#include <arm/iomd/iicvar.h>
|
|
||||||
#include <arm/iomd/iomdvar.h>
|
|
||||||
|
|
||||||
static int iic_iomd_probe __P((struct device *, struct cfdata *, void *));
|
|
||||||
static void iic_iomd_attach __P((struct device *, struct device *, void *));
|
|
||||||
|
|
||||||
CFATTACH_DECL(iic_iomd, sizeof(struct iic_softc),
|
|
||||||
iic_iomd_probe, iic_iomd_attach, NULL, NULL);
|
|
||||||
|
|
||||||
/*
|
|
||||||
* iic device probe function
|
|
||||||
*
|
|
||||||
* just validate the attach args
|
|
||||||
*/
|
|
||||||
|
|
||||||
static int
|
|
||||||
iic_iomd_probe(parent, cf, aux)
|
|
||||||
struct device *parent;
|
|
||||||
struct cfdata *cf;
|
|
||||||
void *aux;
|
|
||||||
{
|
|
||||||
struct iic_attach_args *ia = aux;
|
|
||||||
|
|
||||||
if (strcmp(ia->ia_name, "iic") == 0)
|
|
||||||
return(1);
|
|
||||||
|
|
||||||
return(0);
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* iic device attach function
|
|
||||||
*
|
|
||||||
* Initialise the softc structure and do a search for children
|
|
||||||
*/
|
|
||||||
|
|
||||||
static void
|
|
||||||
iic_iomd_attach(parent, self, aux)
|
|
||||||
struct device *parent;
|
|
||||||
struct device *self;
|
|
||||||
void *aux;
|
|
||||||
{
|
|
||||||
struct iic_softc *sc = (void *)self;
|
|
||||||
struct iic_attach_args *ia = aux;
|
|
||||||
|
|
||||||
sc->sc_iot = ia->ia_iot;
|
|
||||||
sc->sc_ioh = ia->ia_ioh;
|
|
||||||
|
|
||||||
printf("\n");
|
|
||||||
|
|
||||||
config_search(iicsearch, self, NULL);
|
|
||||||
}
|
|
||||||
|
|
||||||
/* End of iic_iomd.c */
|
|
||||||
|
|
@ -1,4 +1,4 @@
|
||||||
/* $NetBSD: iomd_clock.c,v 1.11 2003/07/14 15:17:23 lukem Exp $ */
|
/* $NetBSD: iomd_clock.c,v 1.12 2003/10/06 16:11:19 thorpej Exp $ */
|
||||||
|
|
||||||
/*
|
/*
|
||||||
* Copyright (c) 1994-1997 Mark Brinicombe.
|
* Copyright (c) 1994-1997 Mark Brinicombe.
|
||||||
|
|
@ -54,6 +54,8 @@ __KERNEL_RCSID(0, "$NetBSD");
|
||||||
#include <sys/time.h>
|
#include <sys/time.h>
|
||||||
#include <sys/device.h>
|
#include <sys/device.h>
|
||||||
|
|
||||||
|
#include <dev/clock_subr.h>
|
||||||
|
|
||||||
#include <machine/intr.h>
|
#include <machine/intr.h>
|
||||||
|
|
||||||
#include <arm/cpufunc.h>
|
#include <arm/cpufunc.h>
|
||||||
|
|
@ -359,4 +361,91 @@ delay(n)
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
todr_chip_handle_t todr_handle;
|
||||||
|
|
||||||
|
/*
|
||||||
|
* todr_attach:
|
||||||
|
*
|
||||||
|
* Set the specified time-of-day register as the system real-time clock.
|
||||||
|
*/
|
||||||
|
void
|
||||||
|
todr_attach(todr_chip_handle_t todr)
|
||||||
|
{
|
||||||
|
|
||||||
|
if (todr_handle)
|
||||||
|
panic("todr_attach: rtc already configured");
|
||||||
|
todr_handle = todr;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* inittodr:
|
||||||
|
*
|
||||||
|
* Initialize time from the time-of-day register.
|
||||||
|
*/
|
||||||
|
#define MINYEAR 2003 /* minimum plausible year */
|
||||||
|
void
|
||||||
|
inittodr(time_t base)
|
||||||
|
{
|
||||||
|
time_t deltat;
|
||||||
|
int badbase;
|
||||||
|
|
||||||
|
if (base < (MINYEAR - 1970) * SECYR) {
|
||||||
|
printf("WARNING: preposterous time in file system");
|
||||||
|
/* read the system clock anyway */
|
||||||
|
base = (MINYEAR - 1970) * SECYR;
|
||||||
|
badbase = 1;
|
||||||
|
} else
|
||||||
|
badbase = 0;
|
||||||
|
|
||||||
|
if (todr_handle == NULL ||
|
||||||
|
todr_gettime(todr_handle, (struct timeval *)&time) != 0 ||
|
||||||
|
time.tv_sec == 0) {
|
||||||
|
/*
|
||||||
|
* Believe the time in the file system for lack of
|
||||||
|
* anything better, resetting the TODR.
|
||||||
|
*/
|
||||||
|
time.tv_sec = base;
|
||||||
|
time.tv_usec = 0;
|
||||||
|
if (todr_handle != NULL && !badbase) {
|
||||||
|
printf("WARNING: preposterous clock chip time\n");
|
||||||
|
resettodr();
|
||||||
|
}
|
||||||
|
goto bad;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (!badbase) {
|
||||||
|
/*
|
||||||
|
* See if we tained/lost two or more days; if
|
||||||
|
* so, assume something is amiss.
|
||||||
|
*/
|
||||||
|
deltat = time.tv_sec - base;
|
||||||
|
if (deltat < 0)
|
||||||
|
deltat = -deltat;
|
||||||
|
if (deltat < 2 * SECDAY)
|
||||||
|
return; /* all is well */
|
||||||
|
printf("WARNING: clock %s %ld days\n",
|
||||||
|
time.tv_sec < base ? "lost" : "gained",
|
||||||
|
(long)deltat / SECDAY);
|
||||||
|
}
|
||||||
|
bad:
|
||||||
|
printf("WARNING: CHECK AND RESET THE DATE!\n");
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* resettodr:
|
||||||
|
*
|
||||||
|
* Reset the time-of-day register with the current time.
|
||||||
|
*/
|
||||||
|
void
|
||||||
|
resettodr(void)
|
||||||
|
{
|
||||||
|
|
||||||
|
if (time.tv_sec == 0)
|
||||||
|
return;
|
||||||
|
|
||||||
|
if (todr_handle != NULL &&
|
||||||
|
todr_settime(todr_handle, (struct timeval *)&time) != 0)
|
||||||
|
printf("resettodr: failed to set time\n");
|
||||||
|
}
|
||||||
|
|
||||||
/* End of iomd_clock.c */
|
/* End of iomd_clock.c */
|
||||||
|
|
|
||||||
|
|
@ -1,247 +0,0 @@
|
||||||
/* $NetBSD: iomd_iic.S,v 1.3 2001/11/23 16:53:07 thorpej Exp $ */
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Copyright (c) 1994-1996 Mark Brinicombe.
|
|
||||||
* Copyright (c) 1994 Brini.
|
|
||||||
* All rights reserved.
|
|
||||||
*
|
|
||||||
* This code is derived from software written for Brini by Mark Brinicombe
|
|
||||||
*
|
|
||||||
* 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.
|
|
||||||
* 3. All advertising materials mentioning features or use of this software
|
|
||||||
* must display the following acknowledgement:
|
|
||||||
* This product includes software developed by Mark Brinicombe.
|
|
||||||
* 4. The name of the company nor the name of the author may be used to
|
|
||||||
* endorse or promote products derived from this software without specific
|
|
||||||
* prior written permission.
|
|
||||||
*
|
|
||||||
* THIS SOFTWARE IS PROVIDED BY BRINI ``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 BRINI OR CONTRIBUTORS 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.
|
|
||||||
*
|
|
||||||
* RiscBSD kernel project
|
|
||||||
*
|
|
||||||
* iic.s
|
|
||||||
*
|
|
||||||
* Low level routines to with IIC devices
|
|
||||||
*
|
|
||||||
* Created : 13/10/94
|
|
||||||
*
|
|
||||||
* Based of kate/display/iic.s
|
|
||||||
*/
|
|
||||||
|
|
||||||
#include "assym.h" /* for __PROG32 */
|
|
||||||
|
|
||||||
#include <machine/asm.h>
|
|
||||||
#include <machine/cpu.h>
|
|
||||||
#include <arm/iomd/iomdreg.h>
|
|
||||||
|
|
||||||
#define IIC_BITDELAY 10
|
|
||||||
|
|
||||||
Liomd_base:
|
|
||||||
.word _C_LABEL(iomd_base)
|
|
||||||
|
|
||||||
ENTRY(iic_set_state)
|
|
||||||
/*
|
|
||||||
* Parameters
|
|
||||||
* r0 - IIC data bit
|
|
||||||
* r1 - IIC clock bit
|
|
||||||
*/
|
|
||||||
|
|
||||||
/* Store temporary register */
|
|
||||||
/* stmfd sp!, {r4}*/
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Mask the data and clock bits
|
|
||||||
* Since these routines are only called from iiccontrol.c this is not
|
|
||||||
* really needed
|
|
||||||
*/
|
|
||||||
and r0, r0, #0x00000001
|
|
||||||
and r1, r1, #0x00000001
|
|
||||||
|
|
||||||
/* Get address of IOMD control register */
|
|
||||||
|
|
||||||
ldr r2, Liomd_base
|
|
||||||
ldr r2, [r2]
|
|
||||||
|
|
||||||
/* Get the current CPSR */
|
|
||||||
/* mrs r4, cpsr_all
|
|
||||||
orr r3, r4, #(I32_bit | F32_bit)
|
|
||||||
msr cpsr_all, r3
|
|
||||||
*/
|
|
||||||
|
|
||||||
IRQdisable
|
|
||||||
|
|
||||||
/* Get current value of control register */
|
|
||||||
|
|
||||||
ldrb r3, [r2, #(IOMD_IOCR << 2)]
|
|
||||||
|
|
||||||
/* Preserve non-IIC bits */
|
|
||||||
|
|
||||||
bic r3, r3, #0x00000003
|
|
||||||
/* orr r3, r3, #0x000000c0*/
|
|
||||||
|
|
||||||
/* Set the IIC clock and data bits */
|
|
||||||
|
|
||||||
orr r3, r3, r0
|
|
||||||
orr r3, r3, r1, lsl #1
|
|
||||||
|
|
||||||
/* Store the new value of control register */
|
|
||||||
|
|
||||||
strb r3, [r2, #(IOMD_IOCR << 2)]
|
|
||||||
|
|
||||||
/* Restore CPSR state */
|
|
||||||
/* msr cpsr_all, r4 */
|
|
||||||
|
|
||||||
IRQenable
|
|
||||||
|
|
||||||
/* Restore temporary register */
|
|
||||||
/* ldmfd sp!, {r4} */
|
|
||||||
|
|
||||||
/* Pause a bit */
|
|
||||||
|
|
||||||
mov r0, #(IIC_BITDELAY)
|
|
||||||
|
|
||||||
/* Exit via iic_delay routine */
|
|
||||||
b _C_LABEL(iic_delay)
|
|
||||||
|
|
||||||
ENTRY(iic_set_state_and_ack)
|
|
||||||
/*
|
|
||||||
* Parameters
|
|
||||||
* r0 - IIC data bit
|
|
||||||
* r1 - IIC clock bit
|
|
||||||
*/
|
|
||||||
|
|
||||||
/* Store temporary register */
|
|
||||||
/* stmfd sp!, {r4} */
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Mask the data and clock bits
|
|
||||||
* Since these routines are only called from iiccontrol.c this is not
|
|
||||||
* really needed
|
|
||||||
*/
|
|
||||||
|
|
||||||
and r0, r0, #0x00000001
|
|
||||||
and r1, r1, #0x00000001
|
|
||||||
|
|
||||||
/* Get address of IOMD control register */
|
|
||||||
|
|
||||||
ldr r2, Liomd_base
|
|
||||||
ldr r2, [r2]
|
|
||||||
|
|
||||||
/* Get the current CPSR */
|
|
||||||
/* mrs r4, cpsr_all
|
|
||||||
orr r3, r4, #(I32_bit | F32_bit)
|
|
||||||
msr cpsr_all, r3
|
|
||||||
*/
|
|
||||||
IRQdisable
|
|
||||||
|
|
||||||
/* Get current value of control register */
|
|
||||||
|
|
||||||
ldrb r3, [r2, #(IOMD_IOCR << 2)]
|
|
||||||
|
|
||||||
/* Preserve non-IIC bits */
|
|
||||||
|
|
||||||
bic r3, r3, #0x00000003
|
|
||||||
/* orr r3, r3, #0x000000c0*/
|
|
||||||
|
|
||||||
/* Set the IIC clock and data bits */
|
|
||||||
|
|
||||||
orr r3, r3, r0
|
|
||||||
orr r3, r3, r1, lsl #1
|
|
||||||
|
|
||||||
/* Store the new value of control register */
|
|
||||||
|
|
||||||
strb r3, [r2, #(IOMD_IOCR << 2)]
|
|
||||||
|
|
||||||
Liic_set_state_and_ack_loop:
|
|
||||||
ldrb r3, [r2, #(IOMD_IOCR << 2)]
|
|
||||||
tst r3, #0x00000002
|
|
||||||
beq Liic_set_state_and_ack_loop
|
|
||||||
|
|
||||||
/* Restore CPSR state */
|
|
||||||
/* msr cpsr_all, r4 */
|
|
||||||
|
|
||||||
IRQenable
|
|
||||||
|
|
||||||
/* Restore temporary register */
|
|
||||||
/* ldmfd sp!, {r4} */
|
|
||||||
|
|
||||||
/* Pause a bit */
|
|
||||||
|
|
||||||
mov r0, #(IIC_BITDELAY)
|
|
||||||
|
|
||||||
/* Exit via iic_delay routine */
|
|
||||||
b _C_LABEL(iic_delay)
|
|
||||||
|
|
||||||
|
|
||||||
ENTRY(iic_delay)
|
|
||||||
/*
|
|
||||||
* Parameters
|
|
||||||
* r0 - time to wait
|
|
||||||
*/
|
|
||||||
|
|
||||||
/* Load address of IOMD */
|
|
||||||
|
|
||||||
ldr r2, Liomd_base
|
|
||||||
ldr r2, [r2]
|
|
||||||
|
|
||||||
/* Latch current value of timer 1 */
|
|
||||||
|
|
||||||
strb r2, [r2, #(IOMD_T0LATCH << 2)]
|
|
||||||
|
|
||||||
/* Get the latched value */
|
|
||||||
|
|
||||||
ldrb r1, [r2, #(IOMD_T0LOW << 2)]
|
|
||||||
|
|
||||||
/* Loop until timer reaches end value */
|
|
||||||
|
|
||||||
Liic_delay_loop:
|
|
||||||
|
|
||||||
/* Latch the current value of timer1 */
|
|
||||||
|
|
||||||
strb r2, [r2, #(IOMD_T0LATCH << 2)]
|
|
||||||
|
|
||||||
/* Get the latched value */
|
|
||||||
|
|
||||||
ldrb r3, [r2, #(IOMD_T0LOW << 2)]
|
|
||||||
|
|
||||||
/* Loop until timer reached expected value */
|
|
||||||
|
|
||||||
teq r3, r1
|
|
||||||
movne r1, r3
|
|
||||||
beq Liic_delay_loop
|
|
||||||
|
|
||||||
subs r0, r0, #0x00000001
|
|
||||||
bne Liic_delay_loop
|
|
||||||
|
|
||||||
/* Exit */
|
|
||||||
mov pc, lr
|
|
||||||
|
|
||||||
ENTRY(iic_getstate)
|
|
||||||
/* Load address of IOMD */
|
|
||||||
|
|
||||||
ldr r2, Liomd_base
|
|
||||||
ldr r2, [r2]
|
|
||||||
|
|
||||||
/* Read IOCR */
|
|
||||||
|
|
||||||
ldrb r0, [r2, #(IOMD_IOCR << 2)]
|
|
||||||
mov pc, lr
|
|
||||||
|
|
||||||
/* End of iomd_iic.S */
|
|
||||||
|
|
@ -0,0 +1,232 @@
|
||||||
|
/* $NetBSD: iomdiic.c,v 1.1 2003/10/06 16:11:19 thorpej Exp $ */
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Copyright (c) 2003 Wasabi Systems, Inc.
|
||||||
|
* All rights reserved.
|
||||||
|
*
|
||||||
|
* Written by Jason R. Thorpe for Wasabi Systems, Inc.
|
||||||
|
*
|
||||||
|
* 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.
|
||||||
|
* 3. All advertising materials mentioning features or use of this software
|
||||||
|
* must display the following acknowledgement:
|
||||||
|
* This product includes software developed for the NetBSD Project by
|
||||||
|
* Wasabi Systems, Inc.
|
||||||
|
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
|
||||||
|
* or promote products derived from this software without specific prior
|
||||||
|
* written permission.
|
||||||
|
*
|
||||||
|
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
|
||||||
|
* 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/param.h>
|
||||||
|
#include <sys/device.h>
|
||||||
|
#include <sys/kernel.h>
|
||||||
|
#include <sys/systm.h>
|
||||||
|
#include <sys/lock.h>
|
||||||
|
|
||||||
|
#include <machine/bus.h>
|
||||||
|
#include <machine/cpu.h>
|
||||||
|
|
||||||
|
#include <arm/iomd/iomdreg.h>
|
||||||
|
#include <arm/iomd/iomdvar.h>
|
||||||
|
|
||||||
|
#include <dev/i2c/i2cvar.h>
|
||||||
|
#include <dev/i2c/i2c_bitbang.h>
|
||||||
|
|
||||||
|
#include <arm/iomd/iomdiicvar.h>
|
||||||
|
|
||||||
|
struct iomdiic_softc {
|
||||||
|
struct device sc_dev;
|
||||||
|
bus_space_tag_t sc_st;
|
||||||
|
bus_space_handle_t sc_sh;
|
||||||
|
|
||||||
|
struct i2c_controller sc_i2c;
|
||||||
|
struct lock sc_buslock;
|
||||||
|
|
||||||
|
/*
|
||||||
|
* The SDA pin is open-drain, so we make it an input by
|
||||||
|
* writing a 1 to it.
|
||||||
|
*/
|
||||||
|
uint8_t sc_iomd_iocr;
|
||||||
|
};
|
||||||
|
|
||||||
|
static int iomdiic_acquire_bus(void *, int);
|
||||||
|
static void iomdiic_release_bus(void *, int);
|
||||||
|
|
||||||
|
static int iomdiic_send_start(void *, int);
|
||||||
|
static int iomdiic_send_stop(void *, int);
|
||||||
|
static int iomdiic_initiate_xfer(void *, i2c_addr_t, int);
|
||||||
|
static int iomdiic_read_byte(void *, uint8_t *, int);
|
||||||
|
static int iomdiic_write_byte(void *, uint8_t, int);
|
||||||
|
|
||||||
|
#define IOMDIIC_READ *(__volatile uint8_t *)(IOMD_ADDRESS(IOMD_IOCR))
|
||||||
|
#define IOMDIIC_WRITE(x) *(__volatile uint8_t *)(IOMD_ADDRESS(IOMD_IOCR)) = (x)
|
||||||
|
|
||||||
|
#define IOMD_IOCR_SDA 0x01
|
||||||
|
#define IOMD_IOCR_SCL 0x02
|
||||||
|
|
||||||
|
static void
|
||||||
|
iomdiic_bb_set_bits(void *cookie, uint32_t bits)
|
||||||
|
{
|
||||||
|
struct iomdiic_softc *sc = cookie;
|
||||||
|
|
||||||
|
IOMDIIC_WRITE((IOMDIIC_READ & ~(IOMD_IOCR_SDA|IOMD_IOCR_SCL)) |
|
||||||
|
sc->sc_iomd_iocr | bits);
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
|
iomdiic_bb_set_dir(void *cookie, uint32_t bits)
|
||||||
|
{
|
||||||
|
struct iomdiic_softc *sc = cookie;
|
||||||
|
|
||||||
|
sc->sc_iomd_iocr = bits;
|
||||||
|
}
|
||||||
|
|
||||||
|
static uint32_t
|
||||||
|
iomdiic_bb_read_bits(void *cookie)
|
||||||
|
{
|
||||||
|
|
||||||
|
return (IOMDIIC_READ);
|
||||||
|
}
|
||||||
|
|
||||||
|
static const struct i2c_bitbang_ops iomdiic_bbops = {
|
||||||
|
iomdiic_bb_set_bits,
|
||||||
|
iomdiic_bb_set_dir,
|
||||||
|
iomdiic_bb_read_bits,
|
||||||
|
{
|
||||||
|
IOMD_IOCR_SDA, /* SDA */
|
||||||
|
IOMD_IOCR_SCL, /* SCL */
|
||||||
|
0, /* SDA is output */
|
||||||
|
IOMD_IOCR_SDA, /* SDA is input */
|
||||||
|
}
|
||||||
|
};
|
||||||
|
|
||||||
|
static int
|
||||||
|
iomdiic_match(struct device *parent, struct cfdata *cf, void *aux)
|
||||||
|
{
|
||||||
|
|
||||||
|
return (1);
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
|
iomdiic_attach(struct device *parent, struct device *self, void *aux)
|
||||||
|
{
|
||||||
|
struct iomdiic_softc *sc = (void *) self;
|
||||||
|
struct i2cbus_attach_args iba;
|
||||||
|
|
||||||
|
printf("\n");
|
||||||
|
|
||||||
|
lockinit(&sc->sc_buslock, PRIBIO|PCATCH, "iomdiiclk", 0, 0);
|
||||||
|
|
||||||
|
sc->sc_i2c.ic_cookie = sc;
|
||||||
|
sc->sc_i2c.ic_acquire_bus = iomdiic_acquire_bus;
|
||||||
|
sc->sc_i2c.ic_release_bus = iomdiic_release_bus;
|
||||||
|
sc->sc_i2c.ic_send_start = iomdiic_send_start;
|
||||||
|
sc->sc_i2c.ic_send_stop = iomdiic_send_stop;
|
||||||
|
sc->sc_i2c.ic_initiate_xfer = iomdiic_initiate_xfer;
|
||||||
|
sc->sc_i2c.ic_read_byte = iomdiic_read_byte;
|
||||||
|
sc->sc_i2c.ic_write_byte = iomdiic_write_byte;
|
||||||
|
|
||||||
|
iba.iba_name = "iic";
|
||||||
|
iba.iba_tag = &sc->sc_i2c;
|
||||||
|
(void) config_found(&sc->sc_dev, &iba, iicbus_print);
|
||||||
|
}
|
||||||
|
|
||||||
|
CFATTACH_DECL(iomdiic, sizeof(struct iomdiic_softc),
|
||||||
|
iomdiic_match, iomdiic_attach, NULL, NULL);
|
||||||
|
|
||||||
|
i2c_tag_t
|
||||||
|
iomdiic_bootstrap_cookie(void)
|
||||||
|
{
|
||||||
|
static struct iomdiic_softc sc;
|
||||||
|
|
||||||
|
/* XXX Yuck. */
|
||||||
|
strcpy(sc.sc_dev.dv_xname, "iomdiicboot");
|
||||||
|
|
||||||
|
sc.sc_i2c.ic_cookie = ≻
|
||||||
|
sc.sc_i2c.ic_acquire_bus = iomdiic_acquire_bus;
|
||||||
|
sc.sc_i2c.ic_release_bus = iomdiic_release_bus;
|
||||||
|
sc.sc_i2c.ic_send_start = iomdiic_send_start;
|
||||||
|
sc.sc_i2c.ic_send_stop = iomdiic_send_stop;
|
||||||
|
sc.sc_i2c.ic_initiate_xfer = iomdiic_initiate_xfer;
|
||||||
|
sc.sc_i2c.ic_read_byte = iomdiic_read_byte;
|
||||||
|
sc.sc_i2c.ic_write_byte = iomdiic_write_byte;
|
||||||
|
|
||||||
|
return ((void *) &sc.sc_i2c);
|
||||||
|
}
|
||||||
|
|
||||||
|
static int
|
||||||
|
iomdiic_acquire_bus(void *cookie, int flags)
|
||||||
|
{
|
||||||
|
struct iomdiic_softc *sc = cookie;
|
||||||
|
|
||||||
|
/* XXX What should we do for the polling case? */
|
||||||
|
if (flags & I2C_F_POLL)
|
||||||
|
return (0);
|
||||||
|
|
||||||
|
return (lockmgr(&sc->sc_buslock, LK_EXCLUSIVE, NULL));
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
|
iomdiic_release_bus(void *cookie, int flags)
|
||||||
|
{
|
||||||
|
struct iomdiic_softc *sc = cookie;
|
||||||
|
|
||||||
|
/* XXX See above. */
|
||||||
|
if (flags & I2C_F_POLL)
|
||||||
|
return;
|
||||||
|
|
||||||
|
(void) lockmgr(&sc->sc_buslock, LK_RELEASE, NULL);
|
||||||
|
}
|
||||||
|
|
||||||
|
static int
|
||||||
|
iomdiic_send_start(void *cookie, int flags)
|
||||||
|
{
|
||||||
|
|
||||||
|
return (i2c_bitbang_send_start(cookie, flags, &iomdiic_bbops));
|
||||||
|
}
|
||||||
|
|
||||||
|
static int
|
||||||
|
iomdiic_send_stop(void *cookie, int flags)
|
||||||
|
{
|
||||||
|
|
||||||
|
return (i2c_bitbang_send_stop(cookie, flags, &iomdiic_bbops));
|
||||||
|
}
|
||||||
|
|
||||||
|
static int
|
||||||
|
iomdiic_initiate_xfer(void *cookie, i2c_addr_t addr, int flags)
|
||||||
|
{
|
||||||
|
|
||||||
|
return (i2c_bitbang_initiate_xfer(cookie, addr, flags, &iomdiic_bbops));
|
||||||
|
}
|
||||||
|
|
||||||
|
static int
|
||||||
|
iomdiic_read_byte(void *cookie, uint8_t *bytep, int flags)
|
||||||
|
{
|
||||||
|
|
||||||
|
return (i2c_bitbang_read_byte(cookie, bytep, flags, &iomdiic_bbops));
|
||||||
|
}
|
||||||
|
|
||||||
|
static int
|
||||||
|
iomdiic_write_byte(void *cookie, uint8_t byte, int flags)
|
||||||
|
{
|
||||||
|
|
||||||
|
return (i2c_bitbang_write_byte(cookie, byte, flags, &iomdiic_bbops));
|
||||||
|
}
|
||||||
|
|
@ -0,0 +1,44 @@
|
||||||
|
/* $NetBSD: iomdiicvar.h,v 1.1 2003/10/06 16:11:19 thorpej Exp $ */
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Copyright (c) 2003 Wasabi Systems, Inc.
|
||||||
|
* All rights reserved.
|
||||||
|
*
|
||||||
|
* Written by Jason R. Thorpe for Wasabi Systems, Inc.
|
||||||
|
*
|
||||||
|
* 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.
|
||||||
|
* 3. All advertising materials mentioning features or use of this software
|
||||||
|
* must display the following acknowledgement:
|
||||||
|
* This product includes software developed for the NetBSD Project by
|
||||||
|
* Wasabi Systems, Inc.
|
||||||
|
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
|
||||||
|
* or promote products derived from this software without specific prior
|
||||||
|
* written permission.
|
||||||
|
*
|
||||||
|
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
|
||||||
|
* 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.
|
||||||
|
*/
|
||||||
|
|
||||||
|
#ifndef _ARM_IOMD_IOMDIICVAR_H_
|
||||||
|
#define _ARM_IOMD_IOMDIICVAR_H_
|
||||||
|
|
||||||
|
/* For use during bootstrap. */
|
||||||
|
i2c_tag_t iomdiic_bootstrap_cookie(void);
|
||||||
|
|
||||||
|
#endif /* _ARM_IOMD_IOMDIICVAR_H_ */
|
||||||
|
|
@ -1,491 +0,0 @@
|
||||||
/* $NetBSD: rtc.c,v 1.11 2003/07/15 00:24:46 lukem Exp $ */
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Copyright (c) 1994-1996 Mark Brinicombe.
|
|
||||||
* Copyright (c) 1994 Brini.
|
|
||||||
* All rights reserved.
|
|
||||||
*
|
|
||||||
* This code is derived from software written for Brini by Mark Brinicombe
|
|
||||||
*
|
|
||||||
* 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.
|
|
||||||
* 3. All advertising materials mentioning features or use of this software
|
|
||||||
* must display the following acknowledgement:
|
|
||||||
* This product includes software developed by Brini.
|
|
||||||
* 4. The name of the company nor the name of the author may be used to
|
|
||||||
* endorse or promote products derived from this software without specific
|
|
||||||
* prior written permission.
|
|
||||||
*
|
|
||||||
* THIS SOFTWARE IS PROVIDED BY BRINI ``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 BRINI OR CONTRIBUTORS 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.
|
|
||||||
*
|
|
||||||
* RiscBSD kernel project
|
|
||||||
*
|
|
||||||
* rtc.c
|
|
||||||
*
|
|
||||||
* Routines to read and write the RTC and CMOS RAM
|
|
||||||
*
|
|
||||||
* Created : 13/10/94
|
|
||||||
* Updated : 15/07/2000 DD
|
|
||||||
*/
|
|
||||||
|
|
||||||
#include <sys/cdefs.h>
|
|
||||||
__KERNEL_RCSID(0, "$NetBSD: rtc.c,v 1.11 2003/07/15 00:24:46 lukem Exp $");
|
|
||||||
|
|
||||||
#include <sys/param.h>
|
|
||||||
#include <sys/systm.h>
|
|
||||||
#include <sys/kernel.h>
|
|
||||||
#include <sys/conf.h>
|
|
||||||
#include <sys/malloc.h>
|
|
||||||
#include <sys/device.h>
|
|
||||||
#include <sys/event.h>
|
|
||||||
#include <machine/rtc.h>
|
|
||||||
#include <arm/iomd/iic.h>
|
|
||||||
#include <arm/iomd/todclockvar.h>
|
|
||||||
|
|
||||||
struct rtc_softc {
|
|
||||||
struct device sc_dev;
|
|
||||||
int sc_flags;
|
|
||||||
#define RTC_BROKEN 1
|
|
||||||
#define RTC_OPEN 2
|
|
||||||
};
|
|
||||||
|
|
||||||
void rtcattach __P((struct device *parent, struct device *self, void *aux));
|
|
||||||
int rtcmatch __P((struct device *parent, struct cfdata *cf, void *aux));
|
|
||||||
int rtc_read __P((void *, rtc_t *));
|
|
||||||
int rtc_write __P((void *, rtc_t *));
|
|
||||||
|
|
||||||
static __inline int hexdectodec __P((u_char));
|
|
||||||
static __inline int dectohexdec __P((u_char));
|
|
||||||
static int twodigits __P((char *, int));
|
|
||||||
|
|
||||||
/* Read a byte from CMOS RAM */
|
|
||||||
|
|
||||||
int
|
|
||||||
cmos_read(location)
|
|
||||||
int location;
|
|
||||||
{
|
|
||||||
u_char buff;
|
|
||||||
|
|
||||||
/*
|
|
||||||
* This commented code dates from when I was translating CMOS address
|
|
||||||
* from the RISCOS addresses. Now all addresses are specified as
|
|
||||||
* actual addresses in the CMOS RAM
|
|
||||||
*/
|
|
||||||
|
|
||||||
/*
|
|
||||||
if (location > 0xF0)
|
|
||||||
return(-1);
|
|
||||||
|
|
||||||
if (location < 0xC0)
|
|
||||||
buff = location + 0x40;
|
|
||||||
else
|
|
||||||
buff = location - 0xB0;
|
|
||||||
*/
|
|
||||||
buff = location;
|
|
||||||
|
|
||||||
if (iic_control(RTC_Write, &buff, 1))
|
|
||||||
return(-1);
|
|
||||||
if (iic_control(RTC_Read, &buff, 1))
|
|
||||||
return(-1);
|
|
||||||
|
|
||||||
return(buff);
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
/* Write a byte to CMOS RAM */
|
|
||||||
|
|
||||||
int
|
|
||||||
cmos_write(location, value)
|
|
||||||
int location;
|
|
||||||
int value;
|
|
||||||
{
|
|
||||||
u_char buff[2];
|
|
||||||
int oldvalue, oldsum;
|
|
||||||
|
|
||||||
/*
|
|
||||||
* This commented code dates from when I was translating CMOS address
|
|
||||||
* from the RISCOS addresses. Now all addresses are specified as
|
|
||||||
* actual addresses in the CMOS RAM
|
|
||||||
*/
|
|
||||||
|
|
||||||
/* if (location > 0xF0)
|
|
||||||
return(-1);
|
|
||||||
|
|
||||||
if (location < 0xC0)
|
|
||||||
buff = location + 0x40;
|
|
||||||
else
|
|
||||||
buff = location - 0xB0;
|
|
||||||
*/
|
|
||||||
buff[0] = location;
|
|
||||||
buff[1] = value;
|
|
||||||
|
|
||||||
/* Read the old CMOS location value and old checksum */
|
|
||||||
oldvalue = cmos_read(location);
|
|
||||||
if (oldvalue<0)
|
|
||||||
return(-1);
|
|
||||||
oldsum = cmos_read(RTC_ADDR_CHECKSUM);
|
|
||||||
if (oldsum<0)
|
|
||||||
return(-1);
|
|
||||||
|
|
||||||
if (iic_control(RTC_Write, buff, 2))
|
|
||||||
return(-1);
|
|
||||||
|
|
||||||
/* Now update the checksum. This code only modifies the value. It does */
|
|
||||||
/* not recalculate it */
|
|
||||||
|
|
||||||
buff[0] = RTC_ADDR_CHECKSUM;
|
|
||||||
buff[1] = oldsum - oldvalue + value;
|
|
||||||
if (iic_control(RTC_Write, buff, 2))
|
|
||||||
return(-1);
|
|
||||||
|
|
||||||
return(0);
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
/* Hex to BCD and BCD to hex conversion routines */
|
|
||||||
|
|
||||||
static __inline int
|
|
||||||
hexdectodec(n)
|
|
||||||
u_char n;
|
|
||||||
{
|
|
||||||
return(((n >> 4) & 0x0F) * 10 + (n & 0x0F));
|
|
||||||
}
|
|
||||||
|
|
||||||
static __inline int
|
|
||||||
dectohexdec(n)
|
|
||||||
u_char n;
|
|
||||||
{
|
|
||||||
return(((n / 10) << 4) + (n % 10));
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
/* Write the RTC data from an 8 byte buffer */
|
|
||||||
|
|
||||||
int
|
|
||||||
rtc_write(arg, rtc)
|
|
||||||
void *arg;
|
|
||||||
rtc_t *rtc;
|
|
||||||
{
|
|
||||||
u_char buff[8];
|
|
||||||
|
|
||||||
buff[0] = 1;
|
|
||||||
|
|
||||||
buff[1] = dectohexdec(rtc->rtc_centi);
|
|
||||||
buff[2] = dectohexdec(rtc->rtc_sec);
|
|
||||||
buff[3] = dectohexdec(rtc->rtc_min);
|
|
||||||
buff[4] = dectohexdec(rtc->rtc_hour) & 0x3f;
|
|
||||||
buff[5] = dectohexdec(rtc->rtc_day) | ((rtc->rtc_year & 3) << 6);
|
|
||||||
buff[6] = dectohexdec(rtc->rtc_mon);
|
|
||||||
|
|
||||||
if (iic_control(RTC_Write, buff, 7))
|
|
||||||
return(0);
|
|
||||||
|
|
||||||
if (cmos_write(RTC_ADDR_YEAR, rtc->rtc_year))
|
|
||||||
return(0);
|
|
||||||
if (cmos_write(RTC_ADDR_CENT, rtc->rtc_cen))
|
|
||||||
return(0);
|
|
||||||
|
|
||||||
return(1);
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
/* Read the RTC data into a 8 byte buffer */
|
|
||||||
|
|
||||||
int
|
|
||||||
rtc_read(arg, rtc)
|
|
||||||
void *arg;
|
|
||||||
rtc_t *rtc;
|
|
||||||
{
|
|
||||||
u_char buff[8];
|
|
||||||
int byte;
|
|
||||||
|
|
||||||
buff[0] = 0;
|
|
||||||
|
|
||||||
if (iic_control(RTC_Write, buff, 1))
|
|
||||||
return(0);
|
|
||||||
|
|
||||||
if (iic_control(RTC_Read, buff, 8))
|
|
||||||
return(0);
|
|
||||||
|
|
||||||
rtc->rtc_micro = 0;
|
|
||||||
rtc->rtc_centi = hexdectodec(buff[1] & 0xff);
|
|
||||||
rtc->rtc_sec = hexdectodec(buff[2] & 0x7f);
|
|
||||||
rtc->rtc_min = hexdectodec(buff[3] & 0x7f);
|
|
||||||
rtc->rtc_hour = hexdectodec(buff[4] & 0x3f);
|
|
||||||
|
|
||||||
/* If in 12 hour mode need to look at the AM/PM flag */
|
|
||||||
|
|
||||||
if (buff[4] & 0x80)
|
|
||||||
rtc->rtc_hour += (buff[4] & 0x40) ? 12 : 0;
|
|
||||||
|
|
||||||
rtc->rtc_day = hexdectodec(buff[5] & 0x3f);
|
|
||||||
rtc->rtc_mon = hexdectodec(buff[6] & 0x1f);
|
|
||||||
|
|
||||||
byte = cmos_read(RTC_ADDR_YEAR);
|
|
||||||
if (byte == -1)
|
|
||||||
return(0);
|
|
||||||
rtc->rtc_year = byte;
|
|
||||||
|
|
||||||
byte = cmos_read(RTC_ADDR_CENT);
|
|
||||||
if (byte == -1)
|
|
||||||
return(0);
|
|
||||||
rtc->rtc_cen = byte;
|
|
||||||
|
|
||||||
return(1);
|
|
||||||
}
|
|
||||||
|
|
||||||
/* device and attach structures */
|
|
||||||
|
|
||||||
CFATTACH_DECL(rtc, sizeof(struct rtc_softc),
|
|
||||||
rtcmatch, rtcattach, NULL, NULL);
|
|
||||||
|
|
||||||
extern struct cfdriver rtc_cd;
|
|
||||||
|
|
||||||
dev_type_open(rtcopen);
|
|
||||||
dev_type_close(rtcclose);
|
|
||||||
dev_type_read(rtcread);
|
|
||||||
dev_type_write(rtcwrite);
|
|
||||||
|
|
||||||
const struct cdevsw rtc_cdevsw = {
|
|
||||||
rtcopen, rtcclose, rtcread, rtcwrite, noioctl,
|
|
||||||
nostop, notty, nopoll, nommap, nokqfilter,
|
|
||||||
};
|
|
||||||
|
|
||||||
/*
|
|
||||||
* rtcmatch()
|
|
||||||
*
|
|
||||||
* Validate the IIC address to make sure its an RTC we understand
|
|
||||||
*/
|
|
||||||
|
|
||||||
int
|
|
||||||
rtcmatch(parent, cf, aux)
|
|
||||||
struct device *parent;
|
|
||||||
struct cfdata *cf;
|
|
||||||
void *aux;
|
|
||||||
{
|
|
||||||
struct iicbus_attach_args *ib = aux;
|
|
||||||
|
|
||||||
if ((ib->ib_addr & IIC_PCF8583_MASK) == IIC_PCF8583_ADDR)
|
|
||||||
return(1);
|
|
||||||
|
|
||||||
return(0);
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* rtcattach()
|
|
||||||
*
|
|
||||||
* Attach the rtc device
|
|
||||||
*/
|
|
||||||
|
|
||||||
void
|
|
||||||
rtcattach(parent, self, aux)
|
|
||||||
struct device *parent;
|
|
||||||
struct device *self;
|
|
||||||
void *aux;
|
|
||||||
{
|
|
||||||
struct rtc_softc *sc = (struct rtc_softc *)self;
|
|
||||||
struct iicbus_attach_args *ib = aux;
|
|
||||||
u_char buff[1];
|
|
||||||
struct todclock_attach_args ta;
|
|
||||||
|
|
||||||
sc->sc_flags |= RTC_BROKEN;
|
|
||||||
if ((ib->ib_addr & IIC_PCF8583_MASK) == IIC_PCF8583_ADDR) {
|
|
||||||
printf(": PCF8583");
|
|
||||||
|
|
||||||
/* Read RTC register 0 and report info found */
|
|
||||||
|
|
||||||
buff[0] = 0;
|
|
||||||
|
|
||||||
if (iic_control(RTC_Write, buff, 1))
|
|
||||||
return;
|
|
||||||
|
|
||||||
if (iic_control(RTC_Read, buff, 1))
|
|
||||||
return;
|
|
||||||
|
|
||||||
printf(" clock base ");
|
|
||||||
switch (buff[0] & 0x30) {
|
|
||||||
case 0x00:
|
|
||||||
printf("32.768KHz");
|
|
||||||
break;
|
|
||||||
case 0x10:
|
|
||||||
printf("50Hz");
|
|
||||||
break;
|
|
||||||
case 0x20:
|
|
||||||
printf("event");
|
|
||||||
break;
|
|
||||||
case 0x30:
|
|
||||||
printf("test mode");
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (buff[0] & 0x80)
|
|
||||||
printf(" stopped");
|
|
||||||
if (buff[0] & 0x04)
|
|
||||||
printf(" alarm enabled");
|
|
||||||
sc->sc_flags &= ~RTC_BROKEN;
|
|
||||||
}
|
|
||||||
|
|
||||||
printf("\n");
|
|
||||||
|
|
||||||
ta.ta_name = "todclock";
|
|
||||||
ta.ta_rtc_arg = NULL;
|
|
||||||
ta.ta_rtc_write = rtc_write;
|
|
||||||
ta.ta_rtc_read = rtc_read;
|
|
||||||
ta.ta_flags = 0;
|
|
||||||
config_found(self, &ta, NULL);
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
int
|
|
||||||
rtcopen(dev, flag, mode, p)
|
|
||||||
dev_t dev;
|
|
||||||
int flag;
|
|
||||||
int mode;
|
|
||||||
struct proc *p;
|
|
||||||
{
|
|
||||||
struct rtc_softc *sc;
|
|
||||||
int unit = minor(dev);
|
|
||||||
|
|
||||||
if (unit >= rtc_cd.cd_ndevs)
|
|
||||||
return(ENXIO);
|
|
||||||
|
|
||||||
sc = rtc_cd.cd_devs[unit];
|
|
||||||
|
|
||||||
if (!sc) return(ENXIO);
|
|
||||||
|
|
||||||
if (sc->sc_flags & RTC_BROKEN) return(ENXIO);
|
|
||||||
if (sc->sc_flags & RTC_OPEN) return(EBUSY);
|
|
||||||
|
|
||||||
sc->sc_flags |= RTC_OPEN;
|
|
||||||
|
|
||||||
return(0);
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
int
|
|
||||||
rtcclose(dev, flag, mode, p)
|
|
||||||
dev_t dev;
|
|
||||||
int flag;
|
|
||||||
int mode;
|
|
||||||
struct proc *p;
|
|
||||||
{
|
|
||||||
int unit = minor(dev);
|
|
||||||
struct rtc_softc *sc = rtc_cd.cd_devs[unit];
|
|
||||||
|
|
||||||
sc->sc_flags &= ~RTC_OPEN;
|
|
||||||
|
|
||||||
return(0);
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
int
|
|
||||||
rtcread(dev, uio, flag)
|
|
||||||
dev_t dev;
|
|
||||||
struct uio *uio;
|
|
||||||
int flag;
|
|
||||||
{
|
|
||||||
rtc_t rtc;
|
|
||||||
int s;
|
|
||||||
char buffer[32];
|
|
||||||
int length;
|
|
||||||
|
|
||||||
s = splclock();
|
|
||||||
if (rtc_read(NULL, &rtc) == 0) {
|
|
||||||
(void)splx(s);
|
|
||||||
return(ENXIO);
|
|
||||||
}
|
|
||||||
|
|
||||||
(void)splx(s);
|
|
||||||
|
|
||||||
sprintf(buffer, "%02d:%02d:%02d.%02d%02d %02d/%02d/%02d%02d\n",
|
|
||||||
rtc.rtc_hour, rtc.rtc_min, rtc.rtc_sec, rtc.rtc_centi,
|
|
||||||
rtc.rtc_micro, rtc.rtc_day, rtc.rtc_mon, rtc.rtc_cen,
|
|
||||||
rtc.rtc_year);
|
|
||||||
|
|
||||||
if (uio->uio_offset > strlen(buffer))
|
|
||||||
return 0;
|
|
||||||
|
|
||||||
length = strlen(buffer) - uio->uio_offset;
|
|
||||||
if (length > uio->uio_resid)
|
|
||||||
length = uio->uio_resid;
|
|
||||||
|
|
||||||
return(uiomove((caddr_t)buffer, length, uio));
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
static int
|
|
||||||
twodigits(buffer, pos)
|
|
||||||
char *buffer;
|
|
||||||
int pos;
|
|
||||||
{
|
|
||||||
int result = 0;
|
|
||||||
|
|
||||||
if (buffer[pos] >= '0' && buffer[pos] <= '9')
|
|
||||||
result = (buffer[pos] - '0') * 10;
|
|
||||||
if (buffer[pos+1] >= '0' && buffer[pos+1] <= '9')
|
|
||||||
result += (buffer[pos+1] - '0');
|
|
||||||
return(result);
|
|
||||||
}
|
|
||||||
|
|
||||||
int
|
|
||||||
rtcwrite(dev, uio, flag)
|
|
||||||
dev_t dev;
|
|
||||||
struct uio *uio;
|
|
||||||
int flag;
|
|
||||||
{
|
|
||||||
rtc_t rtc;
|
|
||||||
int s;
|
|
||||||
char buffer[25];
|
|
||||||
int length;
|
|
||||||
int error;
|
|
||||||
|
|
||||||
/*
|
|
||||||
* We require atomic updates!
|
|
||||||
*/
|
|
||||||
length = uio->uio_resid;
|
|
||||||
if (uio->uio_offset || (length != sizeof(buffer)
|
|
||||||
&& length != sizeof(buffer - 1)))
|
|
||||||
return(EINVAL);
|
|
||||||
|
|
||||||
if ((error = uiomove((caddr_t)buffer, sizeof(buffer), uio)))
|
|
||||||
return(error);
|
|
||||||
|
|
||||||
if (length == sizeof(buffer) && buffer[sizeof(buffer) - 1] != '\n')
|
|
||||||
return(EINVAL);
|
|
||||||
|
|
||||||
printf("rtcwrite: %s\n", buffer);
|
|
||||||
|
|
||||||
rtc.rtc_micro = 0;
|
|
||||||
rtc.rtc_centi = twodigits(buffer, 9);
|
|
||||||
rtc.rtc_sec = twodigits(buffer, 6);
|
|
||||||
rtc.rtc_min = twodigits(buffer, 3);
|
|
||||||
rtc.rtc_hour = twodigits(buffer, 0);
|
|
||||||
rtc.rtc_day = twodigits(buffer, 14);
|
|
||||||
rtc.rtc_mon = twodigits(buffer, 17);
|
|
||||||
rtc.rtc_year = twodigits(buffer, 22);
|
|
||||||
rtc.rtc_cen = twodigits(buffer, 20);
|
|
||||||
|
|
||||||
s = splclock();
|
|
||||||
rtc_write(NULL, &rtc);
|
|
||||||
(void)splx(s);
|
|
||||||
|
|
||||||
return(0);
|
|
||||||
}
|
|
||||||
|
|
||||||
/* End of rtc.c */
|
|
||||||
|
|
@ -1,333 +0,0 @@
|
||||||
/* $NetBSD: todclock.c,v 1.7 2002/10/02 15:45:13 thorpej Exp $ */
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Copyright (c) 1994-1997 Mark Brinicombe.
|
|
||||||
* Copyright (c) 1994 Brini.
|
|
||||||
* All rights reserved.
|
|
||||||
*
|
|
||||||
* This code is derived from software written for Brini by Mark Brinicombe
|
|
||||||
*
|
|
||||||
* 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.
|
|
||||||
* 3. All advertising materials mentioning features or use of this software
|
|
||||||
* must display the following acknowledgement:
|
|
||||||
* This product includes software developed by Mark Brinicombe.
|
|
||||||
* 4. The name of the company nor the name of the author may be used to
|
|
||||||
* endorse or promote products derived from this software without specific
|
|
||||||
* prior written permission.
|
|
||||||
*
|
|
||||||
* 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 OR CONTRIBUTORS 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.
|
|
||||||
*
|
|
||||||
* RiscBSD kernel project
|
|
||||||
*
|
|
||||||
* clock.c
|
|
||||||
*
|
|
||||||
* Timer related machine specific code
|
|
||||||
*
|
|
||||||
* Created : 29/09/94
|
|
||||||
*/
|
|
||||||
|
|
||||||
/* Include header files */
|
|
||||||
|
|
||||||
#include <sys/param.h>
|
|
||||||
|
|
||||||
__KERNEL_RCSID(0, "$NetBSD: todclock.c,v 1.7 2002/10/02 15:45:13 thorpej Exp $");
|
|
||||||
|
|
||||||
#include <sys/systm.h>
|
|
||||||
#include <sys/kernel.h>
|
|
||||||
#include <sys/time.h>
|
|
||||||
#include <sys/device.h>
|
|
||||||
|
|
||||||
#include <machine/rtc.h>
|
|
||||||
#include <arm/iomd/todclockvar.h>
|
|
||||||
|
|
||||||
#include "todclock.h"
|
|
||||||
|
|
||||||
#if NTODCLOCK > 1
|
|
||||||
#error "Can only have 1 todclock device"
|
|
||||||
#endif
|
|
||||||
|
|
||||||
/*
|
|
||||||
* softc structure for the todclock device
|
|
||||||
*/
|
|
||||||
|
|
||||||
struct todclock_softc {
|
|
||||||
struct device sc_dev; /* device node */
|
|
||||||
void *sc_rtc_arg; /* arg to read/write */
|
|
||||||
int (*sc_rtc_write) __P((void *, rtc_t *)); /* rtc write function */
|
|
||||||
int (*sc_rtc_read) __P((void *, rtc_t *)); /* rtc read function */
|
|
||||||
};
|
|
||||||
|
|
||||||
/* prototypes for functions */
|
|
||||||
|
|
||||||
static void todclockattach __P((struct device *parent, struct device *self,
|
|
||||||
void *aux));
|
|
||||||
static int todclockmatch __P((struct device *parent, struct cfdata *cf,
|
|
||||||
void *aux));
|
|
||||||
static __inline int yeartoday __P((int));
|
|
||||||
|
|
||||||
/*
|
|
||||||
* We need to remember our softc for functions like inittodr()
|
|
||||||
* and resettodr()
|
|
||||||
* since we only ever have one time-of-day device we can just store
|
|
||||||
* the direct pointer to softc.
|
|
||||||
*/
|
|
||||||
|
|
||||||
static struct todclock_softc *todclock_sc = NULL;
|
|
||||||
|
|
||||||
/* driver and attach structures */
|
|
||||||
|
|
||||||
CFATTACH_DECL(todclock, sizeof(struct todclock_softc),
|
|
||||||
todclockmatch, todclockattach, NULL, NULL);
|
|
||||||
|
|
||||||
/*
|
|
||||||
* int todclockmatch(struct device *parent, struct cfdata *cf, void *aux)
|
|
||||||
*
|
|
||||||
* todclock device probe function.
|
|
||||||
* just validate the attach args
|
|
||||||
*/
|
|
||||||
|
|
||||||
int
|
|
||||||
todclockmatch(parent, cf, aux)
|
|
||||||
struct device *parent;
|
|
||||||
struct cfdata *cf;
|
|
||||||
void *aux;
|
|
||||||
{
|
|
||||||
struct todclock_attach_args *ta = aux;
|
|
||||||
|
|
||||||
if (todclock_sc != NULL)
|
|
||||||
return(0);
|
|
||||||
if (strcmp(ta->ta_name, "todclock") != 0)
|
|
||||||
return(0);
|
|
||||||
|
|
||||||
if (ta->ta_flags & TODCLOCK_FLAG_FAKE)
|
|
||||||
return(1);
|
|
||||||
return(2);
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* void todclockattach(struct device *parent, struct device *self, void *aux)
|
|
||||||
*
|
|
||||||
* todclock device attach function.
|
|
||||||
* Initialise the softc structure and do a search for children
|
|
||||||
*/
|
|
||||||
|
|
||||||
void
|
|
||||||
todclockattach(parent, self, aux)
|
|
||||||
struct device *parent;
|
|
||||||
struct device *self;
|
|
||||||
void *aux;
|
|
||||||
{
|
|
||||||
struct todclock_softc *sc = (void *)self;
|
|
||||||
struct todclock_attach_args *ta = aux;
|
|
||||||
|
|
||||||
/* set up our softc */
|
|
||||||
todclock_sc = sc;
|
|
||||||
todclock_sc->sc_rtc_arg = ta->ta_rtc_arg;
|
|
||||||
todclock_sc->sc_rtc_write = ta->ta_rtc_write;
|
|
||||||
todclock_sc->sc_rtc_read = ta->ta_rtc_read;
|
|
||||||
|
|
||||||
printf("\n");
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Initialise the time of day register.
|
|
||||||
* This is normally left to the filing system to do but not all
|
|
||||||
* filing systems call it e.g. cd9660
|
|
||||||
*/
|
|
||||||
|
|
||||||
inittodr(0);
|
|
||||||
}
|
|
||||||
|
|
||||||
static __inline int
|
|
||||||
yeartoday(year)
|
|
||||||
int year;
|
|
||||||
{
|
|
||||||
return((year % 4) ? 365 : 366);
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
static int month[12] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
|
|
||||||
static int timeset = 0;
|
|
||||||
|
|
||||||
#define SECPERDAY (24*60*60)
|
|
||||||
#define SECPERNYEAR (365*SECPERDAY)
|
|
||||||
#define SECPER4YEARS (4*SECPERNYEAR+SECPERDAY)
|
|
||||||
#define EPOCHYEAR 1970
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Globally visable functions
|
|
||||||
*
|
|
||||||
* These functions are used from other parts of the kernel.
|
|
||||||
* These functions use the functions defined in the tod_sc
|
|
||||||
* to actually read and write the rtc.
|
|
||||||
*
|
|
||||||
* The first todclock to be attached will be used for handling
|
|
||||||
* the time of day.
|
|
||||||
*/
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Write back the time of day to the rtc
|
|
||||||
*/
|
|
||||||
|
|
||||||
void
|
|
||||||
resettodr()
|
|
||||||
{
|
|
||||||
int s;
|
|
||||||
time_t year, mon, day, hour, min, sec;
|
|
||||||
rtc_t rtc;
|
|
||||||
|
|
||||||
/* Have we set the system time in inittodr() */
|
|
||||||
if (!timeset)
|
|
||||||
return;
|
|
||||||
|
|
||||||
/* We need a todclock device and should always have one */
|
|
||||||
if (!todclock_sc)
|
|
||||||
return;
|
|
||||||
|
|
||||||
/* Abort early if there is not actually an RTC write routine */
|
|
||||||
if (todclock_sc->sc_rtc_write == NULL)
|
|
||||||
return;
|
|
||||||
|
|
||||||
sec = time.tv_sec;
|
|
||||||
sec -= rtc_offset * 60;
|
|
||||||
year = (sec / SECPER4YEARS) * 4;
|
|
||||||
sec %= SECPER4YEARS;
|
|
||||||
|
|
||||||
/* year now hold the number of years rounded down 4 */
|
|
||||||
|
|
||||||
while (sec > (yeartoday(EPOCHYEAR+year) * SECPERDAY)) {
|
|
||||||
sec -= yeartoday(EPOCHYEAR+year)*SECPERDAY;
|
|
||||||
year++;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* year is now a correct offset from the EPOCHYEAR */
|
|
||||||
|
|
||||||
year+=EPOCHYEAR;
|
|
||||||
mon=0;
|
|
||||||
if (yeartoday(year) == 366)
|
|
||||||
month[1]=29;
|
|
||||||
else
|
|
||||||
month[1]=28;
|
|
||||||
while (sec >= month[mon]*SECPERDAY) {
|
|
||||||
sec -= month[mon]*SECPERDAY;
|
|
||||||
mon++;
|
|
||||||
}
|
|
||||||
|
|
||||||
day = sec / SECPERDAY;
|
|
||||||
sec %= SECPERDAY;
|
|
||||||
hour = sec / 3600;
|
|
||||||
sec %= 3600;
|
|
||||||
min = sec / 60;
|
|
||||||
sec %= 60;
|
|
||||||
rtc.rtc_cen = year / 100;
|
|
||||||
rtc.rtc_year = year % 100;
|
|
||||||
rtc.rtc_mon = mon+1;
|
|
||||||
rtc.rtc_day = day+1;
|
|
||||||
rtc.rtc_hour = hour;
|
|
||||||
rtc.rtc_min = min;
|
|
||||||
rtc.rtc_sec = sec;
|
|
||||||
rtc.rtc_centi =
|
|
||||||
rtc.rtc_micro = 0;
|
|
||||||
|
|
||||||
s = splclock();
|
|
||||||
todclock_sc->sc_rtc_write(todclock_sc->sc_rtc_arg, &rtc);
|
|
||||||
(void)splx(s);
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Initialise the time of day register, based on the time base which is, e.g.
|
|
||||||
* from a filesystem.
|
|
||||||
*/
|
|
||||||
|
|
||||||
void
|
|
||||||
inittodr(base)
|
|
||||||
time_t base;
|
|
||||||
{
|
|
||||||
time_t n;
|
|
||||||
int i, days = 0;
|
|
||||||
int s;
|
|
||||||
int year;
|
|
||||||
rtc_t rtc;
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Default to the suggested time but replace that we one from an
|
|
||||||
* RTC is we can.
|
|
||||||
*/
|
|
||||||
|
|
||||||
/* Use the suggested time as a fall back */
|
|
||||||
time.tv_sec = base;
|
|
||||||
time.tv_usec = 0;
|
|
||||||
|
|
||||||
/* Can we read an RTC ? */
|
|
||||||
if (todclock_sc != NULL && todclock_sc->sc_rtc_read) {
|
|
||||||
s = splclock();
|
|
||||||
if (todclock_sc->sc_rtc_read(todclock_sc->sc_rtc_arg, &rtc) == 0) {
|
|
||||||
(void)splx(s);
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
(void)splx(s);
|
|
||||||
} else
|
|
||||||
return;
|
|
||||||
|
|
||||||
/* Convert the rtc time into seconds */
|
|
||||||
|
|
||||||
n = rtc.rtc_sec + 60 * rtc.rtc_min + 3600 * rtc.rtc_hour;
|
|
||||||
n += (rtc.rtc_day - 1) * 3600 * 24;
|
|
||||||
year = (rtc.rtc_year + rtc.rtc_cen * 100) - 1900;
|
|
||||||
|
|
||||||
if (yeartoday(year) == 366)
|
|
||||||
month[1] = 29;
|
|
||||||
for (i = rtc.rtc_mon - 2; i >= 0; i--)
|
|
||||||
days += month[i];
|
|
||||||
month[1] = 28;
|
|
||||||
|
|
||||||
for (i = 70; i < year; i++)
|
|
||||||
days += yeartoday(i);
|
|
||||||
|
|
||||||
n += days * 3600 * 24;
|
|
||||||
|
|
||||||
n += rtc_offset * 60;
|
|
||||||
|
|
||||||
time.tv_sec = n;
|
|
||||||
time.tv_usec = 0;
|
|
||||||
|
|
||||||
/* timeset is used to ensure the time is valid before a resettodr() */
|
|
||||||
|
|
||||||
timeset = 1;
|
|
||||||
|
|
||||||
/* If the base was 0 then keep quiet */
|
|
||||||
|
|
||||||
if (base) {
|
|
||||||
printf("inittodr: %02d:%02d:%02d.%02d%02d %02d/%02d/%02d%02d\n",
|
|
||||||
rtc.rtc_hour, rtc.rtc_min, rtc.rtc_sec, rtc.rtc_centi,
|
|
||||||
rtc.rtc_micro, rtc.rtc_day, rtc.rtc_mon, rtc.rtc_cen,
|
|
||||||
rtc.rtc_year);
|
|
||||||
|
|
||||||
if (n > base + 60) {
|
|
||||||
days = (n - base) / SECPERDAY;
|
|
||||||
printf("Clock has gained %d day%c %ld hours %ld minutes %ld secs\n",
|
|
||||||
days, ((days == 1) ? 0 : 's'),
|
|
||||||
(long)((n - base) / 3600) % 24,
|
|
||||||
(long)((n - base) / 60) % 60,
|
|
||||||
(long) (n - base) % 60);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
/* End of todclock.c */
|
|
||||||
|
|
@ -1,55 +0,0 @@
|
||||||
/* $NetBSD: todclockvar.h,v 1.1 2001/10/05 22:27:42 reinoud Exp $ */
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Copyright (c) 1997 Mark Brinicombe.
|
|
||||||
* Copyright (c) 1997 Causality Limited
|
|
||||||
* 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.
|
|
||||||
* 3. All advertising materials mentioning features or use of this software
|
|
||||||
* must display the following acknowledgement:
|
|
||||||
* This product includes software developed by Mark Brinicombe
|
|
||||||
* 4. The name of the company nor the name of the author may be used to
|
|
||||||
* endorse or promote products derived from this software without specific
|
|
||||||
* prior written permission.
|
|
||||||
*
|
|
||||||
* 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 OR CONTRIBUTORS 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.
|
|
||||||
*
|
|
||||||
* todclockvar.h
|
|
||||||
*
|
|
||||||
* structures and variables for the todclock device
|
|
||||||
*
|
|
||||||
* Created : 12/02/97
|
|
||||||
*/
|
|
||||||
|
|
||||||
/*
|
|
||||||
* Attach args for todclock device
|
|
||||||
*/
|
|
||||||
|
|
||||||
struct todclock_attach_args {
|
|
||||||
const char *ta_name; /* device name */
|
|
||||||
void *ta_rtc_arg; /* arg to read/write */
|
|
||||||
int (*ta_rtc_write) __P((void *, rtc_t *)); /* function to write rtc */
|
|
||||||
int (*ta_rtc_read) __P((void *, rtc_t *)); /* function to read rtc */
|
|
||||||
int ta_flags; /* flags */
|
|
||||||
#define TODCLOCK_FLAG_FAKE 0x01 /* tod service is faked */
|
|
||||||
};
|
|
||||||
|
|
||||||
/* End of todclockvar.h */
|
|
||||||
Loading…
Reference in New Issue