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- Add flattended device tree probe-, attach- and detach code for the
SAF1761 driver, compatible to existing Linux based FDT tables for the same hardware. Sponsored by: DARPA, AFRL
This commit is contained in:
Hans Petter Selasky
parent
a673f4c22b
commit
fffa71cbfe
1 changed files with 183 additions and 0 deletions
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@ -50,6 +50,13 @@
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#include <sys/callout.h>
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#include <sys/malloc.h>
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#include <sys/priv.h>
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#include <sys/rman.h>
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#include <dev/fdt/fdt_common.h>
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#include <dev/ofw/openfirm.h>
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#include <dev/ofw/ofw_bus.h>
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#include <dev/ofw/ofw_bus_subr.h>
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#include <dev/usb/usb.h>
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#include <dev/usb/usbdi.h>
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@ -68,3 +75,179 @@
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#include <dev/usb/controller/saf1761_dci.h>
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#include <dev/usb/controller/saf1761_dci_reg.h>
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static device_probe_t saf1761_dci_fdt_probe;
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static device_attach_t saf1761_dci_fdt_attach;
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static device_detach_t saf1761_dci_fdt_detach;
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static device_method_t saf1761_dci_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, saf1761_dci_fdt_probe),
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DEVMETHOD(device_attach, saf1761_dci_fdt_attach),
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DEVMETHOD(device_detach, saf1761_dci_fdt_detach),
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DEVMETHOD(device_suspend, bus_generic_suspend),
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DEVMETHOD(device_resume, bus_generic_resume),
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DEVMETHOD(device_shutdown, bus_generic_shutdown),
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DEVMETHOD_END
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};
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static driver_t saf1761_dci_driver = {
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.name = "saf1761",
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.methods = saf1761_dci_methods,
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.size = sizeof(struct saf1761_dci_softc),
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};
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static devclass_t saf1761_dci_devclass;
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DRIVER_MODULE(saf1761, simplebus, saf1761_dci_driver, saf1761_dci_devclass, 0, 0);
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MODULE_DEPEND(saf1761, usb, 1, 1, 1);
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static int
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saf1761_dci_fdt_probe(device_t dev)
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{
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if (!ofw_bus_status_okay(dev))
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return (ENXIO);
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if (!ofw_bus_is_compatible(dev, "nxp,usb-isp1761"))
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return (ENXIO);
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device_set_desc(dev, "ISP1761/SAF1761 DCI USB 2.0 Device Controller");
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return (0);
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}
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static int
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saf1761_dci_fdt_attach(device_t dev)
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{
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struct saf1761_dci_softc *sc = device_get_softc(dev);
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char param[24];
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int err;
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int rid;
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/* get configuration from FDT */
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/* get bus-width, if any */
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if (OF_getprop(ofw_bus_get_node(dev), "bus-width",
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¶m, sizeof(param)) > 0) {
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param[sizeof(param) - 1] = 0;
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if (strcmp(param, "32") == 0)
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sc->sc_hw_mode |= SOTG_HW_MODE_CTRL_DATA_BUS_WIDTH;
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} else {
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/* assume 32-bit data bus */
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sc->sc_hw_mode |= SOTG_HW_MODE_CTRL_DATA_BUS_WIDTH;
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}
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/* get analog over-current setting */
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if (OF_getprop(ofw_bus_get_node(dev), "analog-oc",
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¶m, sizeof(param)) > 0) {
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sc->sc_hw_mode |= SOTG_HW_MODE_CTRL_ANA_DIGI_OC;
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}
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/* get DACK polarity */
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if (OF_getprop(ofw_bus_get_node(dev), "dack-polarity",
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¶m, sizeof(param)) > 0) {
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sc->sc_hw_mode |= SOTG_HW_MODE_CTRL_DACK_POL;
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}
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/* get DREQ polarity */
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if (OF_getprop(ofw_bus_get_node(dev), "dreq-polarity",
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¶m, sizeof(param)) > 0) {
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sc->sc_hw_mode |= SOTG_HW_MODE_CTRL_DREQ_POL;
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}
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/* initialise some bus fields */
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sc->sc_bus.parent = dev;
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sc->sc_bus.devices = sc->sc_devices;
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sc->sc_bus.devices_max = SOTG_MAX_DEVICES;
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/* get all DMA memory */
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if (usb_bus_mem_alloc_all(&sc->sc_bus,
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USB_GET_DMA_TAG(dev), NULL)) {
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return (ENOMEM);
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}
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rid = 0;
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sc->sc_io_res =
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bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE);
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if (!sc->sc_io_res) {
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goto error;
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}
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sc->sc_io_tag = rman_get_bustag(sc->sc_io_res);
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sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res);
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sc->sc_io_size = rman_get_size(sc->sc_io_res);
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rid = 0;
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sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
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RF_SHAREABLE | RF_ACTIVE);
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if (sc->sc_irq_res == NULL) {
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goto error;
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}
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sc->sc_bus.bdev = device_add_child(dev, "usbus", -1);
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if (!(sc->sc_bus.bdev)) {
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goto error;
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}
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device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
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err = bus_setup_intr(dev, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE,
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NULL, (driver_intr_t *)saf1761_dci_interrupt, sc, &sc->sc_intr_hdl);
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if (err) {
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sc->sc_intr_hdl = NULL;
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goto error;
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}
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err = saf1761_dci_init(sc);
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if (err) {
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device_printf(dev, "Init failed\n");
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goto error;
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}
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err = device_probe_and_attach(sc->sc_bus.bdev);
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if (err) {
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device_printf(dev, "USB probe and attach failed\n");
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goto error;
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}
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return (0);
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error:
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saf1761_dci_fdt_detach(dev);
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return (ENXIO);
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}
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static int
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saf1761_dci_fdt_detach(device_t dev)
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{
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struct saf1761_dci_softc *sc = device_get_softc(dev);
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device_t bdev;
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int err;
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if (sc->sc_bus.bdev) {
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bdev = sc->sc_bus.bdev;
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device_detach(bdev);
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device_delete_child(dev, bdev);
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}
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/* during module unload there are lots of children leftover */
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device_delete_children(dev);
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if (sc->sc_irq_res && sc->sc_intr_hdl) {
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/*
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* Only call uninit() after init()
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*/
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saf1761_dci_uninit(sc);
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err = bus_teardown_intr(dev, sc->sc_irq_res,
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sc->sc_intr_hdl);
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sc->sc_intr_hdl = NULL;
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}
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if (sc->sc_irq_res) {
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bus_release_resource(dev, SYS_RES_IRQ, 0,
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sc->sc_irq_res);
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sc->sc_irq_res = NULL;
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}
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if (sc->sc_io_res) {
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bus_release_resource(dev, SYS_RES_IOPORT, 0,
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sc->sc_io_res);
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sc->sc_io_res = NULL;
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}
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usb_bus_mem_free_all(&sc->sc_bus, NULL);
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return (0);
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}
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