diff options
Diffstat (limited to 'sys/dev/iicbus/controller/qcom/geni_iic_acpi.c')
| -rw-r--r-- | sys/dev/iicbus/controller/qcom/geni_iic_acpi.c | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/sys/dev/iicbus/controller/qcom/geni_iic_acpi.c b/sys/dev/iicbus/controller/qcom/geni_iic_acpi.c new file mode 100644 index 000000000000..2105071f5609 --- /dev/null +++ b/sys/dev/iicbus/controller/qcom/geni_iic_acpi.c @@ -0,0 +1,189 @@ +/* + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (c) 2025 Poul-Henning Kamp <phk@FreeBSD.org> + * + * 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 ``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 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. + * + */ + +#include <sys/cdefs.h> +#include "opt_acpi.h" + +#include <sys/param.h> +#include <sys/bus.h> +#include <sys/kernel.h> +#include <sys/module.h> +#include <sys/proc.h> +#include <sys/rman.h> + +#include <machine/bus.h> +#include <machine/resource.h> + +#include <contrib/dev/acpica/include/acpi.h> +#include <contrib/dev/acpica/include/accommon.h> + +#include <dev/acpica/acpivar.h> +#include <dev/iicbus/iiconf.h> + +#include <dev/iicbus/controller/qcom/geni_iic_var.h> + +static int geniiic_acpi_probe(device_t dev); +static int geniiic_acpi_attach(device_t dev); +static int geniiic_acpi_detach(device_t dev); + +static char *geniiic_ids[] = { + "QCOM0C10", + NULL +}; + +static int +geniiic_acpi_probe(device_t dev) +{ + int rv; + + if (acpi_disabled("geniiic")) + return (ENXIO); + rv = ACPI_ID_PROBE(device_get_parent(dev), dev, geniiic_ids, NULL); + if (rv > 0) + return (rv); + + device_set_desc(dev, "Qualcomm GENI I2C Controller"); + return (rv); +} + +static int +geniiic_acpi_attach(device_t dev) +{ + geniiic_softc_t *sc; + char *str; + int error; + + sc = device_get_softc(dev); + + sc->dev = dev; + error = ACPI_ID_PROBE(device_get_parent(dev), dev, geniiic_ids, &str); + if (error > 0) + return (error); + + sc->regs_rid = 0; + sc->regs_res = bus_alloc_resource_any(dev, + SYS_RES_MEMORY, &sc->regs_rid, RF_ACTIVE); + if (sc->regs_res == NULL) { + device_printf(dev, "unable to map registers\n"); + geniiic_acpi_detach(dev); + return (ENXIO); + } + sc->intr_rid = 0; + sc->intr_res = bus_alloc_resource_any(dev, + SYS_RES_IRQ, &sc->intr_rid, RF_SHAREABLE | RF_ACTIVE); + if (sc->intr_res == NULL) { + device_printf(dev, "unable to map interrupt\n"); + geniiic_acpi_detach(dev); + return (ENXIO); + } + sc->platform_attached = true; + + error = geniiic_attach(sc); + if (error) + geniiic_acpi_detach(dev); + + return (error); +} + +static int +geniiic_acpi_detach(device_t dev) +{ + geniiic_softc_t *sc = device_get_softc(dev); + int error; + + if (sc->platform_attached) { + error = geniiic_detach(sc); + if (error) + return (error); + sc->platform_attached = false; + } + + if (sc->intr_res) { + bus_release_resource(dev, SYS_RES_IRQ, + sc->intr_rid, sc->intr_res); + sc->intr_res = NULL; + } + if (sc->regs_res) { + bus_release_resource(dev, SYS_RES_MEMORY, + sc->regs_rid, sc->regs_res); + sc->regs_res = NULL; + } + + return (0); +} + +static int +geniiic_acpi_suspend(device_t dev) +{ + geniiic_softc_t *sc = device_get_softc(dev); + + return (geniiic_suspend(sc)); +} + +static int +geniiic_acpi_resume(device_t dev) +{ + geniiic_softc_t *sc = device_get_softc(dev); + + return (geniiic_resume(sc)); +} + +static device_method_t geniiic_acpi_methods[] = { + /* Device interface */ + DEVMETHOD(device_probe, geniiic_acpi_probe), + DEVMETHOD(device_attach, geniiic_acpi_attach), + DEVMETHOD(device_detach, geniiic_acpi_detach), + DEVMETHOD(device_suspend, geniiic_acpi_suspend), + DEVMETHOD(device_resume, geniiic_acpi_resume), + + /* Bus interface */ + DEVMETHOD(bus_setup_intr, bus_generic_setup_intr), + DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr), + DEVMETHOD(bus_alloc_resource, bus_generic_alloc_resource), + DEVMETHOD(bus_release_resource, bus_generic_release_resource), + DEVMETHOD(bus_activate_resource, bus_generic_activate_resource), + DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource), + DEVMETHOD(bus_adjust_resource, bus_generic_adjust_resource), + + /* iicbus interface */ + DEVMETHOD(iicbus_transfer, geniiic_transfer), + DEVMETHOD(iicbus_reset, geniiic_reset), + DEVMETHOD(iicbus_callback, geniiic_callback), + + DEVMETHOD_END +}; + +static driver_t geniiic_acpi_driver = { + "geniiic", + geniiic_acpi_methods, + sizeof(struct geniiic_softc), +}; + +DRIVER_MODULE_ORDERED(geniiic, acpi, geniiic_acpi_driver, 0, 0, SI_ORDER_ANY); +MODULE_DEPEND(geniiic, acpi, 1, 1, 1); +ACPI_PNP_INFO(geniiic_ids); |