144 lines
5.3 KiB
C
144 lines
5.3 KiB
C
/* $NetBSD: gttwsi.c,v 1.12 2020/01/12 17:48:42 thorpej Exp $ */
|
|
/*
|
|
* Copyright (c) 2008 Eiji Kawauchi.
|
|
* 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 for the NetBSD Project by
|
|
* Eiji Kawauchi.
|
|
* 4. The name of the author may not 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 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.
|
|
*/
|
|
/*
|
|
* Copyright (c) 2005 Brocade Communcations, inc.
|
|
* All rights reserved.
|
|
*
|
|
* Written by Matt Thomas for Brocade Communcations, 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. The name of Brocade Communications, Inc. may not be used to endorse
|
|
* or promote products derived from this software without specific prior
|
|
* written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY BROCADE COMMUNICATIONS, 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 EITHER BROCADE COMMUNICATIONS, 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.
|
|
*/
|
|
//#define TWSI_DEBUG
|
|
|
|
/*
|
|
* Marvell Two-Wire Serial Interface (aka I2C) master driver
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: gttwsi.c,v 1.12 2020/01/12 17:48:42 thorpej Exp $");
|
|
#include "locators.h"
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/condvar.h>
|
|
#include <sys/device.h>
|
|
#include <sys/errno.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/mutex.h>
|
|
#include <sys/systm.h>
|
|
|
|
#include <machine/cpu.h>
|
|
#include <machine/param.h>
|
|
|
|
#include <dev/i2c/i2cvar.h>
|
|
#include <dev/i2c/gttwsireg.h>
|
|
#include <dev/i2c/gttwsivar.h>
|
|
|
|
#include <dev/marvell/marvellvar.h>
|
|
|
|
static const bus_size_t marvell_twsi_regmap[GTTWSI_NREGS] = {
|
|
[TWSI_SLAVEADDR] = TWSI_MARVELL_SLAVEADDR,
|
|
[TWSI_EXTEND_SLAVEADDR] = TWSI_MARVELL_EXTEND_SLAVEADDR,
|
|
[TWSI_DATA] = TWSI_MARVELL_DATA,
|
|
[TWSI_CONTROL] = TWSI_MARVELL_CONTROL,
|
|
[TWSI_STATUS] = TWSI_MARVELL_STATUS,
|
|
[TWSI_BAUDRATE] = TWSI_MARVELL_BAUDRATE,
|
|
[TWSI_SOFTRESET] = TWSI_MARVELL_SOFTRESET,
|
|
};
|
|
|
|
static int gttwsi_match(device_t, cfdata_t, void *);
|
|
static void gttwsi_attach(device_t, device_t, void *);
|
|
|
|
CFATTACH_DECL_NEW(gttwsi_gt, sizeof(struct gttwsi_softc),
|
|
gttwsi_match, gttwsi_attach, NULL, NULL);
|
|
CFATTACH_DECL_NEW(gttwsi_mbus, sizeof(struct gttwsi_softc),
|
|
gttwsi_match, gttwsi_attach, NULL, NULL);
|
|
|
|
/* ARGSUSED */
|
|
static int
|
|
gttwsi_match(device_t parent, cfdata_t match, void *aux)
|
|
{
|
|
struct marvell_attach_args *mva = aux;
|
|
|
|
if (strcmp(mva->mva_name, match->cf_name) != 0)
|
|
return 0;
|
|
if (mva->mva_offset == MVA_OFFSET_DEFAULT ||
|
|
mva->mva_irq == MVA_IRQ_DEFAULT)
|
|
return 0;
|
|
|
|
mva->mva_size = GTTWSI_SIZE;
|
|
return 1;
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
static void
|
|
gttwsi_attach(device_t parent, device_t self, void *args)
|
|
{
|
|
struct marvell_attach_args *mva = args;
|
|
bus_space_handle_t ioh;
|
|
|
|
if (bus_space_subregion(mva->mva_iot, mva->mva_ioh, mva->mva_offset,
|
|
mva->mva_size, &ioh)) {
|
|
aprint_error(": cannot map registers\n");
|
|
return;
|
|
}
|
|
|
|
gttwsi_attach_subr(self, mva->mva_iot, ioh, marvell_twsi_regmap);
|
|
|
|
marvell_intr_establish(mva->mva_irq, IPL_BIO, gttwsi_intr,
|
|
device_private(self));
|
|
|
|
gttwsi_config_children(self);
|
|
}
|