117 lines
2.6 KiB
C
117 lines
2.6 KiB
C
/* $NetBSD: joy_eap.c,v 1.4 2005/12/11 12:22:50 christos Exp $ */
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/device.h>
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#include <sys/audioio.h>
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#include <dev/audio_if.h>
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#include <machine/bus.h>
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#include <dev/pci/eapreg.h>
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#include <dev/pci/eapvar.h>
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#include <dev/ic/joyvar.h>
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struct joy_eap_aa {
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struct audio_attach_args aa_aaa;
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bus_space_tag_t aa_iot;
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bus_space_handle_t aa_ioh;
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};
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struct device *
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eap_joy_attach(struct device *eapdev, struct eap_gameport_args *gpa)
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{
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int i;
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bus_space_handle_t ioh;
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u_int32_t icsc;
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struct joy_eap_aa aa;
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struct device *joydev;
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/*
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* There are 4 possible locations. Just try to map one of them.
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* XXX This is questionable for 2 reasons:
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* - We don't know whether these addresses are usable on our
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* PCI bus (might be a secondary one).
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* - PCI probing is early. ISA devices might conflict.
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*/
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for (i = 0; i < 4; i++) {
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if (bus_space_map(gpa->gpa_iot, 0x200 + i * 8, 1,
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0, &ioh) == 0)
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break;
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}
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if (i == 4)
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return (0);
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printf("%s: enabling gameport at legacy io port 0x%x\n",
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eapdev->dv_xname, 0x200 + i * 8);
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/* enable gameport on eap */
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icsc = bus_space_read_4(gpa->gpa_iot, gpa->gpa_ioh, EAP_ICSC);
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icsc &= ~E1371_JOY_ASELBITS;
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icsc |= EAP_JYSTK_EN | E1371_JOY_ASEL(i);
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bus_space_write_4(gpa->gpa_iot, gpa->gpa_ioh, EAP_ICSC, icsc);
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aa.aa_aaa.type = AUDIODEV_TYPE_AUX;
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aa.aa_iot = gpa->gpa_iot;
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aa.aa_ioh = ioh;
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joydev = config_found(eapdev, &aa, 0);
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/* this cannot fail */
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KASSERT(joydev != NULL);
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return (joydev);
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}
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int
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eap_joy_detach(struct device *joydev, struct eap_gameport_args *gpa)
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{
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int res;
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struct joy_softc *sc = (struct joy_softc *)joydev;
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u_int32_t icsc;
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res = config_detach(joydev, 0);
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if (res)
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return (res);
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/* disable gameport on eap */
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icsc = bus_space_read_4(gpa->gpa_iot, gpa->gpa_ioh, EAP_ICSC);
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icsc &= ~EAP_JYSTK_EN;
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bus_space_write_4(gpa->gpa_iot, gpa->gpa_ioh, EAP_ICSC, icsc);
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bus_space_unmap(sc->sc_iot, sc->sc_ioh, 1);
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return (0);
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}
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static int
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joy_eap_match(struct device *parent, struct cfdata *match, void *aux)
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{
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struct joy_eap_aa *eaa = aux;
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if (eaa->aa_aaa.type != AUDIODEV_TYPE_AUX)
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return (0);
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return (1);
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}
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static void
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joy_eap_attach(struct device *parent, struct device *self, void *aux)
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{
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struct joy_softc *sc = (struct joy_softc *)self;
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struct joy_eap_aa *eaa = aux;
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printf("\n");
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sc->sc_iot = eaa->aa_iot;
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sc->sc_ioh = eaa->aa_ioh;
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joyattach(sc);
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}
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static int
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joy_eap_detach(struct device *self, int flags)
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{
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return (joydetach((struct joy_softc *)self, flags));
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}
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CFATTACH_DECL(joy_eap, sizeof (struct joy_softc),
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joy_eap_match, joy_eap_attach, joy_eap_detach, NULL);
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