| 1 | /* $OpenBSD: omap_com.c,v 1.2 2013/11/06 19:03:07 syl Exp $ */ |
| 2 | /* |
| 3 | * Copyright 2003 Wasabi Systems, Inc. |
| 4 | * All rights reserved. |
| 5 | * |
| 6 | * Written by Steve C. Woodford for Wasabi Systems, Inc. |
| 7 | * |
| 8 | * Redistribution and use in source and binary forms, with or without |
| 9 | * modification, are permitted provided that the following conditions |
| 10 | * are met: |
| 11 | * 1. Redistributions of source code must retain the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer. |
| 13 | * 2. Redistributions in binary form must reproduce the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer in the |
| 15 | * documentation and/or other materials provided with the distribution. |
| 16 | * 3. All advertising materials mentioning features or use of this software |
| 17 | * must display the following acknowledgement: |
| 18 | * This product includes software developed for the NetBSD Project by |
| 19 | * Wasabi Systems, Inc. |
| 20 | * 4. The name of Wasabi Systems, Inc. may not be used to endorse |
| 21 | * or promote products derived from this software without specific prior |
| 22 | * written permission. |
| 23 | * |
| 24 | * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND |
| 25 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 26 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 27 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC |
| 28 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 29 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 30 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 31 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 32 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 33 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 34 | * POSSIBILITY OF SUCH DAMAGE. |
| 35 | */ |
| 36 | |
| 37 | #include <sys/param.h> |
| 38 | #include <sys/systm.h> |
| 39 | #include <sys/device.h> |
| 40 | #include <sys/tty.h> |
| 41 | |
| 42 | #include <machine/intr.h> |
| 43 | #include <machine/bus.h> |
| 44 | |
| 45 | #include <dev/ic/comreg.h> |
| 46 | #include <dev/ic/comvar.h> |
| 47 | |
| 48 | /* pick up armv7_a4x_bs_tag */ |
| 49 | #include <arch/arm/armv7/armv7var.h> |
| 50 | |
| 51 | #include <armv7/armv7/armv7var.h> |
| 52 | |
| 53 | #define com_isr 8 |
| 54 | #define ISR_RECV (ISR_RXPL | ISR_XMODE | ISR_RCVEIR) |
| 55 | |
| 56 | void omapuart_attach(struct device *, struct device *, void *); |
| 57 | int omapuart_activate(struct device *, int); |
| 58 | |
| 59 | struct cfattach com_omap_ca = { |
| 60 | sizeof (struct com_softc), NULL, omapuart_attach, NULL, |
| 61 | omapuart_activate |
| 62 | }; |
| 63 | |
| 64 | void |
| 65 | omapuart_attach(struct device *parent, struct device *self, void *aux) |
| 66 | { |
| 67 | struct com_softc *sc = (struct com_softc *)self; |
| 68 | struct armv7_attach_args *aa = aux; |
| 69 | |
| 70 | sc->sc_iot = &armv7_a4x_bs_tag; /* XXX: This sucks */ |
| 71 | sc->sc_iobase = aa->aa_dev->mem[0].addr; |
| 72 | sc->sc_frequency = 48000000; |
| 73 | sc->sc_uarttype = COM_UART_TI16750; |
| 74 | |
| 75 | if (bus_space_map(sc->sc_iot, sc->sc_iobase, |
| 76 | aa->aa_dev->mem[0].size, 0, &sc->sc_ioh)) { |
| 77 | printf("%s: bus_space_map failed\n", __func__); |
| 78 | return; |
| 79 | } |
| 80 | |
| 81 | com_attach_subr(sc); |
| 82 | |
| 83 | (void)arm_intr_establish(aa->aa_dev->irq[0], IPL_TTY, comintr, |
| 84 | sc, sc->sc_dev.dv_xname); |
| 85 | } |
| 86 | |
| 87 | int |
| 88 | omapuart_activate(struct device *self, int act) |
| 89 | { |
| 90 | struct com_softc *sc = (struct com_softc *)self; |
| 91 | bus_space_tag_t iot = sc->sc_iot; |
| 92 | bus_space_handle_t ioh = sc->sc_ioh; |
| 93 | struct tty *tp = sc->sc_tty; |
| 94 | |
| 95 | switch (act) { |
| 96 | case DVACT_SUSPEND: |
| 97 | break; |
| 98 | case DVACT_RESUME: |
| 99 | if (sc->enabled) { |
| 100 | sc->sc_initialize = 1; |
| 101 | comparam(tp, &tp->t_termios); |
| 102 | bus_space_write_1(iot, ioh, com_ier, sc->sc_ier); |
| 103 | |
| 104 | if (ISSET(sc->sc_hwflags, COM_HW_SIR)) { |
| 105 | bus_space_write_1(iot, ioh, com_isr, |
| 106 | ISR_RECV); |
| 107 | } |
| 108 | } |
| 109 | break; |
| 110 | } |
| 111 | return 0; |
| 112 | } |