117 lines
3.3 KiB
C
117 lines
3.3 KiB
C
/* $Id: imx23_plcom.c,v 1.1 2012/11/20 19:06:13 jkunz Exp $ */
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/*
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* Copyright (c) 2012 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Petri Laakso
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/* Interface to plcom (PL011) serial driver. */
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/bus.h>
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#include <sys/device.h>
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#include <sys/systm.h>
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#include <sys/termios.h>
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#include <arm/pic/picvar.h>
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#include <arm/imx/imx23var.h>
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#include <arm/imx/imx23_uartdbgreg.h>
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#include <evbarm/dev/plcomreg.h>
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#include <evbarm/dev/plcomvar.h>
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static int imx23_plcom_match(device_t, cfdata_t, void *);
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static void imx23_plcom_attach(device_t, device_t, void *);
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CFATTACH_DECL3_NEW(imx23plcom,
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sizeof(struct plcom_softc),
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imx23_plcom_match,
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imx23_plcom_attach,
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NULL,
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NULL,
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NULL,
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NULL,
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0);
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static int
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imx23_plcom_match(device_t parent, cfdata_t cf, void *aux)
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{
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struct apb_attach_args *aaa = aux;
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if (aaa->aa_addr == HW_UARTDBG_BASE &&
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aaa->aa_size == PL011COM_UART_SIZE) {
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return 1;
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}
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return 0;
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}
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static void
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imx23_plcom_attach(device_t parent, device_t self, void *aux)
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{
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static int plcom_attached = 0;
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struct plcom_softc *sc = device_private(self);
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struct apb_attach_args *aaa = aux;
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void *ih;
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if (plcom_attached)
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return;
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sc->sc_dev = self;
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sc->sc_frequency = IMX23_UART_CLK;
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sc->sc_hwflags = PLCOM_HW_TXFIFO_DISABLE;
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sc->sc_swflags = 0;
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sc->sc_set_mcr = NULL;
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sc->sc_set_mcr_arg = NULL;
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sc->sc_pi.pi_type = PLCOM_TYPE_PL011;
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sc->sc_pi.pi_flags = PLC_FLAG_32BIT_ACCESS;
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sc->sc_pi.pi_iot = aaa->aa_iot;
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sc->sc_pi.pi_iobase = aaa->aa_addr;
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if (bus_space_map(aaa->aa_iot, aaa->aa_addr, PL011COM_UART_SIZE, 0,
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&sc->sc_pi.pi_ioh)) {
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aprint_error_dev(sc->sc_dev, "unable to map device\n");
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return;
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}
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plcom_attach_subr(sc);
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ih = intr_establish(aaa->aa_irq, IPL_SERIAL, IST_LEVEL,
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plcomintr, sc);
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if (ih == NULL)
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panic("%s: cannot install interrupt handler",
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device_xname(sc->sc_dev));
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plcom_attached = 1;
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return;
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}
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