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Diffstat (limited to 'sys/dev/ppbus/lpbb.c')
-rw-r--r--sys/dev/ppbus/lpbb.c319
1 files changed, 0 insertions, 319 deletions
diff --git a/sys/dev/ppbus/lpbb.c b/sys/dev/ppbus/lpbb.c
deleted file mode 100644
index cd8ff244a0c61..0000000000000
--- a/sys/dev/ppbus/lpbb.c
+++ /dev/null
@@ -1,319 +0,0 @@
-/*-
- * Copyright (c) 1998 Nicolas Souchu, Marc Bouget
- * 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 AUTHOR AND CONTRIBUTORS ``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 AUTHOR OR CONTRIBUTORS 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.
- *
- * $Id: lpbb.c,v 1.3 1998/12/07 21:58:16 archie Exp $
- *
- */
-
-/*
- * I2C Bit-Banging over parallel port
- *
- * See the Official Philips interface description in lpbb(4)
- */
-
-#include <sys/param.h>
-#include <sys/kernel.h>
-#include <sys/systm.h>
-#include <sys/module.h>
-#include <sys/bus.h>
-#include <sys/conf.h>
-#include <sys/buf.h>
-#include <sys/uio.h>
-#include <sys/malloc.h>
-
-#include <machine/clock.h>
-
-#include <dev/ppbus/ppbconf.h>
-
-#include <dev/iicbus/iiconf.h>
-#include <dev/iicbus/iicbus.h>
-
-#include "iicbb_if.h"
-
-/* iicbus softc */
-struct lpbb_softc {
-
- struct ppb_device lpbb_dev;
-};
-
-static int lpbb_detect(struct lpbb_softc *);
-
-static int lpbb_probe(device_t);
-static int lpbb_attach(device_t);
-static void lpbb_print_child(device_t, device_t);
-
-static int lpbb_callback(device_t, int, caddr_t *);
-static void lpbb_setlines(device_t, int, int);
-static int lpbb_getdataline(device_t);
-static int lpbb_reset(device_t, u_char, u_char, u_char *);
-
-static devclass_t lpbb_devclass;
-
-static device_method_t lpbb_methods[] = {
- /* device interface */
- DEVMETHOD(device_probe, lpbb_probe),
- DEVMETHOD(device_attach, lpbb_attach),
-
- /* bus interface */
- DEVMETHOD(bus_print_child, lpbb_print_child),
-
- /* iicbb interface */
- DEVMETHOD(iicbb_callback, lpbb_callback),
- DEVMETHOD(iicbb_setlines, lpbb_setlines),
- DEVMETHOD(iicbb_getdataline, lpbb_getdataline),
- DEVMETHOD(iicbb_reset, lpbb_reset),
-
- { 0, 0 }
-};
-
-static driver_t lpbb_driver = {
- "lpbb",
- lpbb_methods,
- DRIVER_TYPE_MISC,
- sizeof(struct lpbb_softc),
-};
-
-/*
- * Make ourselves visible as a ppbus driver
- */
-static struct ppb_device *lpbb_ppb_probe(struct ppb_data *ppb);
-static int lpbb_ppb_attach(struct ppb_device *dev);
-
-#define MAXLPBB 8 /* XXX not much better! */
-static struct lpbb_softc *lpbbdata[MAXLPBB];
-static int nlpbb = 0;
-
-#ifdef KERNEL
-
-static struct ppb_driver lpbbdriver = {
- lpbb_ppb_probe, lpbb_ppb_attach, "lpbb"
-};
-DATA_SET(ppbdriver_set, lpbbdriver);
-
-#endif /* KERNEL */
-
-static int
-lpbb_probe(device_t dev)
-{
- struct lpbb_softc *sc = lpbbdata[device_get_unit(dev)];
- struct lpbb_softc *scdst = (struct lpbb_softc *)device_get_softc(dev);
-
- /* XXX copy softc. Yet, ppbus device is sc->lpbb_dev, but will be
- * dev->parent when ppbus will be ported to the new bus architecture */
- bcopy(sc, scdst, sizeof(struct lpbb_softc));
-
- device_set_desc(dev, "parallel I2C bit-banging interface");
-
- /* probe done by ppbus initialization */
- return (0);
-}
-
-static int
-lpbb_attach(device_t dev)
-{
- device_t bitbang, iicbus;
-
- /* add generic bit-banging code */
- bitbang = device_add_child(dev, "iicbb", -1, NULL);
-
- /* add the iicbus to the tree */
- iicbus = iicbus_alloc_bus(bitbang);
-
- device_probe_and_attach(bitbang);
-
- /* XXX should be in iicbb_attach! */
- device_probe_and_attach(iicbus);
-
- return (0);
-}
-
-/*
- * lppbb_ppb_probe()
- */
-static struct ppb_device *
-lpbb_ppb_probe(struct ppb_data *ppb)
-{
- struct lpbb_softc *sc;
-
- sc = (struct lpbb_softc *) malloc(sizeof(struct lpbb_softc),
- M_TEMP, M_NOWAIT);
- if (!sc) {
- printf("lpbb: cannot malloc!\n");
- return (0);
- }
- bzero(sc, sizeof(struct lpbb_softc));
-
- lpbbdata[nlpbb] = sc;
-
- /*
- * ppbus dependent initialisation.
- */
- sc->lpbb_dev.id_unit = nlpbb;
- sc->lpbb_dev.name = lpbbdriver.name;
- sc->lpbb_dev.ppb = ppb;
- sc->lpbb_dev.intr = 0;
-
- if (!lpbb_detect(sc)) {
- free(sc, M_TEMP);
- return (NULL);
- }
-
- /* Ok, go to next device on next probe */
- nlpbb ++;
-
- /* XXX wrong according to new bus architecture. ppbus needs to be
- * ported
- */
- return (&sc->lpbb_dev);
-}
-
-static int
-lpbb_ppb_attach(struct ppb_device *dev)
-{
- /* add the parallel port I2C interface to the bus tree */
- if (!device_add_child(root_bus, "lpbb", dev->id_unit, NULL))
- return (0);
-
- return (1);
-}
-
-static int
-lpbb_callback(device_t dev, int index, caddr_t *data)
-{
- struct lpbb_softc *sc = (struct lpbb_softc *)device_get_softc(dev);
- int error = 0;
- int how;
-
- switch (index) {
- case IIC_REQUEST_BUS:
- /* request the ppbus */
- how = *(int *)data;
- error = ppb_request_bus(&sc->lpbb_dev, how);
- break;
-
- case IIC_RELEASE_BUS:
- /* release the ppbus */
- error = ppb_release_bus(&sc->lpbb_dev);
- break;
-
- default:
- error = EINVAL;
- }
-
- return (error);
-}
-
-#define SDA_out 0x80
-#define SCL_out 0x08
-#define SDA_in 0x80
-#define SCL_in 0x08
-#define ALIM 0x20
-#define I2CKEY 0x50
-
-static int getSDA(struct lpbb_softc *sc)
-{
-if((ppb_rstr(&sc->lpbb_dev)&SDA_in)==SDA_in)
- return 1;
-else
- return 0;
-}
-
-static void setSDA(struct lpbb_softc *sc, char val)
-{
-if(val==0)
- ppb_wdtr(&sc->lpbb_dev, (u_char)SDA_out);
-else
- ppb_wdtr(&sc->lpbb_dev, (u_char)~SDA_out);
-}
-
-static void setSCL(struct lpbb_softc *sc, unsigned char val)
-{
-if(val==0)
- ppb_wctr(&sc->lpbb_dev, (u_char)(ppb_rctr(&sc->lpbb_dev)&~SCL_out));
-else
- ppb_wctr(&sc->lpbb_dev, (u_char)(ppb_rctr(&sc->lpbb_dev)|SCL_out));
-}
-
-static int lpbb_detect(struct lpbb_softc *sc)
-{
- if (ppb_request_bus(&sc->lpbb_dev, PPB_DONTWAIT)) {
- printf("lpbb: can't allocate ppbus\n");
- return (0);
- }
-
- /* reset bus */
- setSDA(sc, 1);
- setSCL(sc, 1);
-
- if ((ppb_rstr(&sc->lpbb_dev) & I2CKEY) ||
- ((ppb_rstr(&sc->lpbb_dev) & ALIM) != ALIM)) {
-
- ppb_release_bus(&sc->lpbb_dev);
- return (0);
- }
-
- ppb_release_bus(&sc->lpbb_dev);
-
- return (1);
-}
-
-static int
-lpbb_reset(device_t dev, u_char speed, u_char addr, u_char * oldaddr)
-{
- struct lpbb_softc *sc = (struct lpbb_softc *)device_get_softc(dev);
-
- /* reset bus */
- setSDA(sc, 1);
- setSCL(sc, 1);
-
- return (IIC_ENOADDR);
-}
-
-static void
-lpbb_setlines(device_t dev, int ctrl, int data)
-{
- struct lpbb_softc *sc = (struct lpbb_softc *)device_get_softc(dev);
-
- setSCL(sc, ctrl);
- setSDA(sc, data);
-}
-
-static int
-lpbb_getdataline(device_t dev)
-{
- struct lpbb_softc *sc = (struct lpbb_softc *)device_get_softc(dev);
-
- return (getSDA(sc));
-}
-
-static void
-lpbb_print_child(device_t bus, device_t dev)
-{
- printf(" on %s%d", device_get_name(bus), device_get_unit(bus));
-
- return;
-}
-
-DRIVER_MODULE(lpbb, root, lpbb_driver, lpbb_devclass, 0, 0);
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