NetBSD-5.0.2/sys/dev/pci/gtp.c
/* $NetBSD: gtp.c,v 1.14 2007/10/19 12:00:44 ad Exp $ */
/* $OpenBSD: gtp.c,v 1.1 2002/06/03 16:13:21 mickey Exp $ */
/*
* Copyright (c) 2002 Vladimir Popov <jumbo@narod.ru>
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``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 AUTHORS 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.
*/
/* Gemtek PCI Radio Card Device Driver */
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: gtp.c,v 1.14 2007/10/19 12:00:44 ad Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/errno.h>
#include <sys/ioctl.h>
#include <sys/proc.h>
#include <sys/radioio.h>
#include <sys/bus.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcidevs.h>
#include <dev/ic/tea5757.h>
#include <dev/radio_if.h>
#define PCI_CBIO 0x10
static int gtp_match(struct device *, struct cfdata *, void *);
static void gtp_attach(struct device *, struct device *, void *);
static int gtp_get_info(void *, struct radio_info *);
static int gtp_set_info(void *, struct radio_info *);
static int gtp_search(void *, int);
#define GEMTEK_PCI_CAPS RADIO_CAPS_DETECT_SIGNAL | \
RADIO_CAPS_DETECT_STEREO | \
RADIO_CAPS_SET_MONO | \
RADIO_CAPS_HW_SEARCH | \
RADIO_CAPS_HW_AFC | \
RADIO_CAPS_LOCK_SENSITIVITY
#define GEMTEK_PCI_MUTE 0x00
#define GEMTEK_PCI_RSET 0x10
#define GEMTEK_PCI_SIGNAL 0x08
#define GEMTEK_PCI_STEREO 0x08
#define GTP_WREN_ON (1 << 2)
#define GTP_WREN_OFF (0 << 2)
#define GTP_DATA_ON (1 << 1)
#define GTP_DATA_OFF (0 << 1)
#define GTP_CLCK_ON (1 << 0)
#define GTP_CLCK_OFF (0 << 0)
#define GTP_READ_CLOCK_LOW (GTP_WREN_OFF | GTP_DATA_ON | GTP_CLCK_OFF)
#define GTP_READ_CLOCK_HIGH (GTP_WREN_OFF | GTP_DATA_ON | GTP_CLCK_ON)
/* define our interface to the high-level radio driver */
static const struct radio_hw_if gtp_hw_if = {
NULL, /* open */
NULL, /* close */
gtp_get_info,
gtp_set_info,
gtp_search
};
struct gtp_softc {
struct device sc_dev;
int mute;
u_int8_t vol;
u_int32_t freq;
u_int32_t stereo;
u_int32_t lock;
struct tea5757_t tea;
};
CFATTACH_DECL(gtp, sizeof(struct gtp_softc),
gtp_match, gtp_attach, NULL, NULL);
static void gtp_set_mute(struct gtp_softc *);
static void gtp_write_bit(bus_space_tag_t, bus_space_handle_t, bus_size_t,
int);
static void gtp_init(bus_space_tag_t, bus_space_handle_t, bus_size_t,
u_int32_t);
static void gtp_rset(bus_space_tag_t, bus_space_handle_t, bus_size_t,
u_int32_t);
static int gtp_state(bus_space_tag_t, bus_space_handle_t);
static uint32_t gtp_hardware_read(bus_space_tag_t, bus_space_handle_t,
bus_size_t);
static int
gtp_match(struct device *parent, struct cfdata *cf, void *aux)
{
struct pci_attach_args *pa = aux;
/* FIXME:
* Guillemot produces the card that
* was originally developed by Gemtek
*/
#if 0
if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_GEMTEK &&
PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_GEMTEK_PR103)
return (1);
#else
if (PCI_VENDOR(pa->pa_id) == PCI_VENDOR_GUILLEMOT &&
PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_GUILLEMOT_MAXIRADIO)
return (1);
#endif
return (0);
}
static void
gtp_attach(struct device *parent, struct device *self, void *aux)
{
struct gtp_softc *sc = (struct gtp_softc *) self;
struct pci_attach_args *pa = aux;
struct cfdata *cf = device_cfdata(&sc->sc_dev);
pci_chipset_tag_t pc = pa->pa_pc;
bus_size_t iosize;
pcireg_t csr;
char devinfo[256];
aprint_naive(": Radio controller\n");
pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof(devinfo));
aprint_normal(": %s (rev. 0x%02x)\n", devinfo,
PCI_REVISION(pa->pa_class));
/* Map I/O registers */
if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_IO, 0, &sc->tea.iot,
&sc->tea.ioh, NULL, &iosize)) {
aprint_error(": can't map i/o space\n");
return;
}
/* Enable the card */
csr = pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
csr | PCI_COMMAND_MASTER_ENABLE);
sc->vol = 0;
sc->mute = 0;
sc->freq = MIN_FM_FREQ;
sc->stereo = TEA5757_STEREO;
sc->lock = TEA5757_S030;
sc->tea.offset = 0;
sc->tea.flags = cf->cf_flags;
sc->tea.init = gtp_init;
sc->tea.rset = gtp_rset;
sc->tea.write_bit = gtp_write_bit;
sc->tea.read = gtp_hardware_read;
aprint_normal(": Gemtek PR103\n");
radio_attach_mi(>p_hw_if, sc, &sc->sc_dev);
}
static int
gtp_get_info(void *v, struct radio_info *ri)
{
struct gtp_softc *sc = v;
ri->mute = sc->mute;
ri->volume = sc->vol ? 255 : 0;
ri->stereo = sc->stereo == TEA5757_STEREO ? 1 : 0;
ri->caps = GEMTEK_PCI_CAPS;
ri->rfreq = 0;
ri->lock = tea5757_decode_lock(sc->lock);
/* Frequency read unsupported */
ri->freq = sc->freq;
ri->info = gtp_state(sc->tea.iot, sc->tea.ioh);
gtp_set_mute(sc);
return (0);
}
static int
gtp_set_info(void *v, struct radio_info *ri)
{
struct gtp_softc *sc = v;
sc->mute = ri->mute ? 1 : 0;
sc->vol = ri->volume ? 255 : 0;
sc->stereo = ri->stereo ? TEA5757_STEREO: TEA5757_MONO;
sc->lock = tea5757_encode_lock(ri->lock);
ri->freq = sc->freq = tea5757_set_freq(&sc->tea,
sc->lock, sc->stereo, ri->freq);
gtp_set_mute(sc);
return (0);
}
static int
gtp_search(void *v, int f)
{
struct gtp_softc *sc = v;
tea5757_search(&sc->tea, sc->lock, sc->stereo, f);
gtp_set_mute(sc);
return (0);
}
static void
gtp_set_mute(struct gtp_softc *sc)
{
if (sc->mute || !sc->vol)
bus_space_write_2(sc->tea.iot, sc->tea.ioh, 0, GEMTEK_PCI_MUTE);
else
sc->freq = tea5757_set_freq(&sc->tea,
sc->lock, sc->stereo, sc->freq);
}
static void
gtp_write_bit(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off,
int bit)
{
u_int8_t data;
data = bit ? GTP_DATA_ON : GTP_DATA_OFF;
bus_space_write_1(iot, ioh, off, GTP_WREN_ON | GTP_CLCK_OFF | data);
bus_space_write_1(iot, ioh, off, GTP_WREN_ON | GTP_CLCK_ON | data);
bus_space_write_1(iot, ioh, off, GTP_WREN_ON | GTP_CLCK_OFF | data);
}
static void
gtp_init(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off,
u_int32_t d)
{
bus_space_write_1(iot, ioh, off, GTP_WREN_ON | GTP_DATA_ON | GTP_CLCK_OFF);
}
static void
gtp_rset(bus_space_tag_t iot, bus_space_handle_t ioh, bus_size_t off,
u_int32_t d)
{
bus_space_write_1(iot, ioh, off, GEMTEK_PCI_RSET);
}
static uint32_t
gtp_hardware_read(bus_space_tag_t iot, bus_space_handle_t ioh,
bus_size_t off)
{
/* UNSUPPORTED */
return 0;
}
static int
gtp_state(bus_space_tag_t iot, bus_space_handle_t ioh)
{
int ret;
bus_space_write_2(iot, ioh, 0,
GTP_DATA_ON | GTP_WREN_OFF | GTP_CLCK_OFF);
ret = bus_space_read_2(iot, ioh, 0) &
GEMTEK_PCI_STEREO? 0 : RADIO_INFO_STEREO;
bus_space_write_2(iot, ioh, 0,
GTP_DATA_ON | GTP_WREN_OFF | GTP_CLCK_ON);
ret |= bus_space_read_2(iot, ioh, 0) &
GEMTEK_PCI_SIGNAL? 0 : RADIO_INFO_SIGNAL;
return ret;
}