Annotation of sys/arch/arm/xscale/pxa2x0_com.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: pxa2x0_com.c,v 1.7 2005/07/18 00:50:19 uwe Exp $ */
! 2: /* $NetBSD: pxa2x0_com.c,v 1.4 2003/07/15 00:24:55 lukem Exp $ */
! 3:
! 4: /*
! 5: * Copyright 2003 Wasabi Systems, Inc.
! 6: * All rights reserved.
! 7: *
! 8: * Written by Steve C. Woodford for Wasabi Systems, Inc.
! 9: *
! 10: * Redistribution and use in source and binary forms, with or without
! 11: * modification, are permitted provided that the following conditions
! 12: * are met:
! 13: * 1. Redistributions of source code must retain the above copyright
! 14: * notice, this list of conditions and the following disclaimer.
! 15: * 2. Redistributions in binary form must reproduce the above copyright
! 16: * notice, this list of conditions and the following disclaimer in the
! 17: * documentation and/or other materials provided with the distribution.
! 18: * 3. All advertising materials mentioning features or use of this software
! 19: * must display the following acknowledgement:
! 20: * This product includes software developed for the NetBSD Project by
! 21: * Wasabi Systems, Inc.
! 22: * 4. The name of Wasabi Systems, Inc. may not be used to endorse
! 23: * or promote products derived from this software without specific prior
! 24: * written permission.
! 25: *
! 26: * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
! 27: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! 28: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! 29: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
! 30: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! 31: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! 32: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! 33: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! 34: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! 35: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 36: * POSSIBILITY OF SUCH DAMAGE.
! 37: */
! 38:
! 39: #include <sys/cdefs.h>
! 40: /*
! 41: __KERNEL_RCSID(0, "$NetBSD: pxa2x0_com.c,v 1.4 2003/07/15 00:24:55 lukem Exp $");
! 42: */
! 43:
! 44: #ifndef COM_PXA2X0
! 45: #error "You must use options COM_PXA2X0 to get PXA2x0 serial port support"
! 46: #endif
! 47:
! 48: #include <sys/param.h>
! 49: #include <sys/systm.h>
! 50: #include <sys/device.h>
! 51: #include <sys/tty.h>
! 52:
! 53: #include <machine/intr.h>
! 54: #include <machine/bus.h>
! 55:
! 56: #include <dev/ic/comreg.h>
! 57: #include <dev/ic/comvar.h>
! 58:
! 59: #define com_isr 8
! 60: #define ISR_RECV (ISR_RXPL | ISR_XMODE | ISR_RCVEIR)
! 61:
! 62: #include <arm/xscale/pxa2x0reg.h>
! 63: #include <arm/xscale/pxa2x0var.h>
! 64:
! 65: #ifdef __zaurus__
! 66: #include <zaurus/dev/zaurus_scoopvar.h>
! 67: #endif
! 68:
! 69: int pxauart_match(struct device *, void *, void *);
! 70: void pxauart_attach(struct device *, struct device *, void *);
! 71: void pxauart_power(int why, void *);
! 72:
! 73: struct cfattach com_pxaip_ca = {
! 74: sizeof (struct com_softc), pxauart_match, pxauart_attach
! 75: };
! 76:
! 77: int
! 78: pxauart_match(struct device *parent, void *cf, void *aux)
! 79: {
! 80: struct pxaip_attach_args *pxa = aux;
! 81: bus_space_tag_t bt = &pxa2x0_a4x_bs_tag; /* XXX: This sucks */
! 82: bus_space_handle_t bh;
! 83: int rv;
! 84:
! 85: switch (pxa->pxa_addr) {
! 86: case PXA2X0_FFUART_BASE:
! 87: if (pxa->pxa_intr != PXA2X0_INT_FFUART)
! 88: return (0);
! 89: break;
! 90:
! 91: case PXA2X0_STUART_BASE:
! 92: if (pxa->pxa_intr != PXA2X0_INT_STUART)
! 93: return (0);
! 94: break;
! 95:
! 96: case PXA2X0_BTUART_BASE: /* XXX: Config file option ... */
! 97: if (pxa->pxa_intr != PXA2X0_INT_BTUART)
! 98: return (0);
! 99: break;
! 100:
! 101: default:
! 102: return (0);
! 103: }
! 104:
! 105: pxa->pxa_size = 0x20;
! 106:
! 107: {
! 108: extern bus_addr_t comconsaddr;
! 109:
! 110: if (comconsaddr == pxa->pxa_addr)
! 111: return (1);
! 112: }
! 113:
! 114: if (bus_space_map(bt, pxa->pxa_addr, pxa->pxa_size, 0, &bh))
! 115: return (0);
! 116:
! 117: /* Make sure the UART is enabled */
! 118: bus_space_write_1(bt, bh, com_ier, IER_EUART);
! 119:
! 120: rv = comprobe1(bt, bh);
! 121: bus_space_unmap(bt, bh, pxa->pxa_size);
! 122:
! 123: return (rv);
! 124: }
! 125:
! 126: void
! 127: pxauart_attach(struct device *parent, struct device *self, void *aux)
! 128: {
! 129: struct com_softc *sc = (struct com_softc *)self;
! 130: struct pxaip_attach_args *pxa = aux;
! 131:
! 132: sc->sc_iot = &pxa2x0_a4x_bs_tag; /* XXX: This sucks */
! 133: sc->sc_iobase = pxa->pxa_addr;
! 134: sc->sc_frequency = PXA2X0_COM_FREQ;
! 135: sc->sc_uarttype = COM_UART_PXA2X0;
! 136:
! 137: #if 0
! 138: if (com_is_console(sc->sc_iot, sc->sc_iobase, &sc->sc_ioh) == 0 &&
! 139: bus_space_map(sc->sc_iot, sc->sc_iobase, pxa->pxa_size, 0,
! 140: &sc->sc_ioh)) {
! 141: printf(": can't map registers\n");
! 142: return;
! 143: }
! 144: #endif
! 145: bus_space_map(sc->sc_iot, sc->sc_iobase, pxa->pxa_size, 0, &sc->sc_ioh);
! 146:
! 147: com_attach_subr(sc);
! 148:
! 149: (void)pxa2x0_intr_establish(pxa->pxa_intr, IPL_TTY, comintr,
! 150: sc, sc->sc_dev.dv_xname);
! 151:
! 152: (void)powerhook_establish(&pxauart_power, sc);
! 153: }
! 154:
! 155: void
! 156: pxauart_power(int why, void *arg)
! 157: {
! 158: struct com_softc *sc = arg;
! 159: bus_space_tag_t iot = sc->sc_iot;
! 160: bus_space_handle_t ioh = sc->sc_ioh;
! 161: struct tty *tp = sc->sc_tty;
! 162:
! 163: switch (why) {
! 164: case PWR_SUSPEND:
! 165: case PWR_STANDBY:
! 166: if (sc->enabled && ISSET(sc->sc_hwflags, COM_HW_SIR))
! 167: scoop_set_irled(0);
! 168: break;
! 169: case PWR_RESUME:
! 170: if (sc->enabled) {
! 171: sc->sc_initialize = 1;
! 172: comparam(tp, &tp->t_termios);
! 173: bus_space_write_1(iot, ioh, com_ier, sc->sc_ier);
! 174:
! 175: if (ISSET(sc->sc_hwflags, COM_HW_SIR)) {
! 176: scoop_set_irled(1);
! 177: bus_space_write_1(iot, ioh, com_isr,
! 178: ISR_RECV);
! 179: }
! 180: }
! 181: break;
! 182: }
! 183: }
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