static int
pcf_probe(device_t pcfdev)
{
struct pcf_softc *pcf = DEVTOSOFTC(pcfdev);
device_t parent = device_get_parent(pcfdev);
uintptr_t base;
device_set_desc(pcfdev, "PCF8584 I2C bus controller");
bzero(pcf, sizeof(struct pcf_softc));
pcf->rid_irq = pcf->rid_ioport = 0;
pcf->res_irq = pcf->res_ioport = NULL;
/* IO port is mandatory */
pcf->res_ioport = bus_alloc_resource(pcfdev, SYS_RES_IOPORT,
&pcf->rid_ioport, 0ul, ~0ul,
IO_PCFSIZE, RF_ACTIVE);
if (pcf->res_ioport == NULL) {
device_printf(pcfdev, "cannot reserve I/O port range\n");
goto error;
}
BUS_READ_IVAR(parent, pcfdev, ISA_IVAR_PORT, &base);
pcf->pcf_base = base;
pcf->pcf_flags = device_get_flags(pcfdev);
if (!(pcf->pcf_flags & IIC_POLLED)) {
pcf->res_irq = bus_alloc_resource(pcfdev, SYS_RES_IRQ, &pcf->rid_irq,
0ul, ~0ul, 1, RF_ACTIVE);
if (pcf->res_irq == NULL) {
device_printf(pcfdev, "can't reserve irq, polled mode.\n");
pcf->pcf_flags |= IIC_POLLED;
}
}
/* reset the chip */
pcf_rst_card(pcfdev, IIC_FASTEST, PCF_DEFAULT_ADDR, NULL);
return (0);
error:
if (pcf->res_ioport != NULL) {
bus_deactivate_resource(pcfdev, SYS_RES_IOPORT, pcf->rid_ioport,
pcf->res_ioport);
bus_release_resource(pcfdev, SYS_RES_IOPORT, pcf->rid_ioport,
pcf->res_ioport);
}
return (ENXIO);
}
static int
pcf_ebus_attach(device_t dev)
{
struct pcf_softc *sc;
int rv = ENXIO;
phandle_t node;
uint64_t own_addr;
sc = DEVTOSOFTC(dev);
bzero(sc, sizeof(struct pcf_softc));
/* get OFW node of the pcf */
if ((node = ofw_bus_get_node(dev)) <= 0) {
device_printf(dev, "cannot get OFW node\n");
goto error;
}
/* IO port is mandatory */
sc->res_ioport = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
&sc->rid_ioport, RF_ACTIVE);
if (sc->res_ioport == 0) {
device_printf(dev, "cannot reserve I/O port range\n");
goto error;
}
sc->bt_ioport = rman_get_bustag(sc->res_ioport);
sc->bh_ioport = rman_get_bushandle(sc->res_ioport);
sc->pcf_flags = device_get_flags(dev);
/*
* XXX use poll-mode property?
*/
if (!(sc->pcf_flags & IIC_POLLED)) {
sc->res_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ,
&sc->rid_irq, RF_ACTIVE);
if (sc->res_irq == 0) {
device_printf(dev, "can't reserve irq, polled mode.\n");
sc->pcf_flags |= IIC_POLLED;
}
}
/*
* XXX on AXmp there's probably a second IRQ which is the fan fail
* interrupt genererated by the PCF8574 at 0x78.
*/
/* get address of the pcf */
if (OF_getprop(node, "own-address", &own_addr, sizeof(own_addr)) ==
-1) {
device_printf(dev, "cannot get own address\n");
goto error;
}
if (bootverbose)
device_printf(dev, "PCF8584 address: 0x%08llx\n", (unsigned
long long)own_addr);
/* reset the chip */
pcf_rst_card(dev, IIC_FASTEST, own_addr, NULL);
if (sc->res_irq) {
rv = bus_setup_intr(dev, sc->res_irq,
INTR_TYPE_NET /* | INTR_ENTROPY */, NULL, pcf_intr, sc,
&sc->intr_cookie);
if (rv) {
device_printf(dev, "could not setup IRQ\n");
goto error;
}
}
if ((sc->iicbus = device_add_child(dev, "iicbus", -1)) == NULL)
device_printf(dev, "could not allocate iicbus instance\n");
/* probe and attach the iicbus */
bus_generic_attach(dev);
return (0);
error:
if (sc->res_irq != 0) {
bus_release_resource(dev, SYS_RES_IRQ, sc->rid_irq,
sc->res_irq);
}
if (sc->res_ioport != 0) {
bus_release_resource(dev, SYS_RES_MEMORY, sc->rid_ioport,
sc->res_ioport);
}
return (rv);
}
static int
pcf_isa_attach(device_t dev)
{
struct pcf_softc *sc;
int rv = ENXIO;
sc = DEVTOSOFTC(dev);
mtx_init(&sc->pcf_lock, device_get_nameunit(dev), "pcf", MTX_DEF);
/* IO port is mandatory */
sc->res_ioport = bus_alloc_resource_any(dev, SYS_RES_IOPORT,
&sc->rid_ioport, RF_ACTIVE);
if (sc->res_ioport == 0) {
device_printf(dev, "cannot reserve I/O port range\n");
goto error;
}
sc->pcf_flags = device_get_flags(dev);
if (!(sc->pcf_flags & IIC_POLLED)) {
sc->res_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->rid_irq,
RF_ACTIVE);
if (sc->res_irq == 0) {
device_printf(dev, "can't reserve irq, polled mode.\n");
sc->pcf_flags |= IIC_POLLED;
}
}
/* reset the chip */
pcf_rst_card(dev, IIC_FASTEST, PCF_DEFAULT_ADDR, NULL);
if (sc->res_irq) {
rv = bus_setup_intr(dev, sc->res_irq,
INTR_TYPE_NET /* | INTR_ENTROPY */,
NULL, pcf_intr, sc, &sc->intr_cookie);
if (rv) {
device_printf(dev, "could not setup IRQ\n");
goto error;
}
}
if ((sc->iicbus = device_add_child(dev, "iicbus", -1)) == NULL)
device_printf(dev, "could not allocate iicbus instance\n");
/* probe and attach the iicbus */
bus_generic_attach(dev);
return (0);
error:
if (sc->res_irq != 0) {
bus_release_resource(dev, SYS_RES_IRQ, sc->rid_irq,
sc->res_irq);
}
if (sc->res_ioport != 0) {
bus_release_resource(dev, SYS_RES_IOPORT, sc->rid_ioport,
sc->res_ioport);
}
mtx_destroy(&sc->pcf_lock);
return (rv);
}
static int
envctrl_attach(device_t dev)
{
struct pcf_softc *sc;
int rv = ENXIO;
sc = DEVTOSOFTC(dev);
bzero(sc, sizeof(struct pcf_softc));
/* IO port is mandatory */
sc->res_ioport = bus_alloc_resource_any(dev, SYS_RES_IOPORT,
&sc->rid_ioport, RF_ACTIVE);
if (sc->res_ioport == 0) {
device_printf(dev, "cannot reserve I/O port range\n");
goto error;
}
sc->bt_ioport = rman_get_bustag(sc->res_ioport);
sc->bh_ioport = rman_get_bushandle(sc->res_ioport);
sc->pcf_flags = device_get_flags(dev);
if (!(sc->pcf_flags & IIC_POLLED)) {
sc->res_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->rid_irq,
RF_ACTIVE);
if (sc->res_irq == 0) {
device_printf(dev, "can't reserve irq, polled mode.\n");
sc->pcf_flags |= IIC_POLLED;
}
}
/* reset the chip */
pcf_rst_card(dev, IIC_FASTEST, PCF_DEFAULT_ADDR, NULL);
rv = BUS_SETUP_INTR(device_get_parent(dev), dev, sc->res_irq,
INTR_TYPE_NET /* | INTR_ENTROPY */,
pcf_intr, sc, &sc->intr_cookie);
if (rv) {
device_printf(dev, "could not setup IRQ\n");
goto error;
}
if ((sc->iicbus = device_add_child(dev, "iicbus", -1)) == NULL)
device_printf(dev, "could not allocate iicbus instance\n");
/* probe and attach the iicbus */
bus_generic_attach(dev);
return (0);
error:
if (sc->res_irq != 0) {
bus_deactivate_resource(dev, SYS_RES_IRQ, sc->rid_irq,
sc->res_irq);
bus_release_resource(dev, SYS_RES_IRQ, sc->rid_irq,
sc->res_irq);
}
if (sc->res_ioport != 0) {
bus_deactivate_resource(dev, SYS_RES_IOPORT, sc->rid_ioport,
sc->res_ioport);
bus_release_resource(dev, SYS_RES_IOPORT, sc->rid_ioport,
sc->res_ioport);
}
return (rv);
}