diff options
Diffstat (limited to 'sys/dev/terasic')
| -rw-r--r-- | sys/dev/terasic/mtl/terasic_mtl_fdt.c | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/sys/dev/terasic/mtl/terasic_mtl_fdt.c b/sys/dev/terasic/mtl/terasic_mtl_fdt.c new file mode 100644 index 0000000..4a6f2ba --- /dev/null +++ b/sys/dev/terasic/mtl/terasic_mtl_fdt.c @@ -0,0 +1,196 @@ +/*- + * Copyright (c) 2012 Robert N. M. Watson + * All rights reserved. + * + * This software was developed by SRI International and the University of + * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237) + * ("CTSRD"), as part of the DARPA CRASH research programme. + * + * 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. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/bus.h> +#include <sys/condvar.h> +#include <sys/conf.h> +#include <sys/consio.h> /* struct vt_mode */ +#include <sys/fbio.h> /* video_adapter_t */ +#include <sys/kernel.h> +#include <sys/lock.h> +#include <sys/malloc.h> +#include <sys/module.h> +#include <sys/mutex.h> +#include <sys/rman.h> +#include <sys/systm.h> + +#include <machine/bus.h> +#include <machine/resource.h> + +#include <dev/terasic/mtl/terasic_mtl.h> + +static int +terasic_mtl_nexus_probe(device_t dev) +{ + + device_set_desc(dev, "Terasic Multi-touch LCD (MTL)"); + return (BUS_PROBE_DEFAULT); +} + +static int +terasic_mtl_nexus_attach(device_t dev) +{ + struct terasic_mtl_softc *sc; + u_long pixel_maddr, text_maddr, reg_maddr; + u_long pixel_msize, text_msize, reg_msize; + int error; + + sc = device_get_softc(dev); + sc->mtl_dev = dev; + sc->mtl_unit = device_get_unit(dev); + + /* + * Query non-standard hints to find the locations of our two memory + * regions. Enforce certain alignment and size requirements. + */ + if (resource_long_value(device_get_name(dev), device_get_unit(dev), + "reg_maddr", ®_maddr) != 0 || (reg_maddr % PAGE_SIZE != 0)) { + device_printf(dev, "improper register address"); + return (ENXIO); + } + if (resource_long_value(device_get_name(dev), device_get_unit(dev), + "reg_msize", ®_msize) != 0 || (reg_msize % PAGE_SIZE != 0)) { + device_printf(dev, "improper register size"); + return (ENXIO); + } + if (resource_long_value(device_get_name(dev), device_get_unit(dev), + "pixel_maddr", &pixel_maddr) != 0 || + (pixel_maddr % PAGE_SIZE != 0)) { + device_printf(dev, "improper pixel frame buffer address"); + return (ENXIO); + } + if (resource_long_value(device_get_name(dev), device_get_unit(dev), + "pixel_msize", &pixel_msize) != 0 || + (pixel_msize % PAGE_SIZE != 0)) { + device_printf(dev, "improper pixel frame buffer size"); + return (ENXIO); + } + if (resource_long_value(device_get_name(dev), device_get_unit(dev), + "text_maddr", &text_maddr) != 0 || + (text_maddr % PAGE_SIZE != 0)) { + device_printf(dev, "improper text frame buffer address"); + return (ENXIO); + } + if (resource_long_value(device_get_name(dev), device_get_unit(dev), + "text_msize", &text_msize) != 0 || + (text_msize % PAGE_SIZE != 0)) { + device_printf(dev, "improper text frame buffer size"); + return (ENXIO); + } + + /* + * Allocate resources. + */ + sc->mtl_reg_rid = 0; + sc->mtl_reg_res = bus_alloc_resource(dev, SYS_RES_MEMORY, + &sc->mtl_reg_rid, reg_maddr, reg_maddr + reg_msize - 1, + reg_msize, RF_ACTIVE); + if (sc->mtl_reg_res == NULL) { + device_printf(dev, "couldn't map register memory\n"); + error = ENXIO; + goto error; + } + device_printf(sc->mtl_dev, "registers at mem %p-%p\n", + (void *)reg_maddr, (void *)(reg_maddr + reg_msize)); + sc->mtl_pixel_rid = 0; + sc->mtl_pixel_res = bus_alloc_resource(dev, SYS_RES_MEMORY, + &sc->mtl_pixel_rid, pixel_maddr, pixel_maddr + pixel_msize - 1, + pixel_msize, RF_ACTIVE); + if (sc->mtl_pixel_res == NULL) { + device_printf(dev, "couldn't map pixel memory\n"); + error = ENXIO; + goto error; + } + device_printf(sc->mtl_dev, "pixel frame buffer at mem %p-%p\n", + (void *)pixel_maddr, (void *)(pixel_maddr + pixel_msize)); + sc->mtl_text_rid = 0; + sc->mtl_text_res = bus_alloc_resource(dev, SYS_RES_MEMORY, + &sc->mtl_text_rid, text_maddr, text_maddr + text_msize - 1, + text_msize, RF_ACTIVE); + if (sc->mtl_text_res == NULL) { + device_printf(dev, "couldn't map text memory\n"); + error = ENXIO; + goto error; + } + device_printf(sc->mtl_dev, "text frame buffer at mem %p-%p\n", + (void *)text_maddr, (void *)(text_maddr + text_msize)); + error = terasic_mtl_attach(sc); + if (error == 0) + return (0); +error: + if (sc->mtl_text_res != NULL) + bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_text_rid, + sc->mtl_text_res); + if (sc->mtl_pixel_res != NULL) + bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_pixel_rid, + sc->mtl_pixel_res); + if (sc->mtl_reg_res != NULL) + bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_reg_rid, + sc->mtl_reg_res); + return (error); +} + +static int +terasic_mtl_nexus_detach(device_t dev) +{ + struct terasic_mtl_softc *sc; + + sc = device_get_softc(dev); + terasic_mtl_detach(sc); + bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_text_rid, + sc->mtl_text_res); + bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_pixel_rid, + sc->mtl_pixel_res); + bus_release_resource(dev, SYS_RES_MEMORY, sc->mtl_reg_rid, + sc->mtl_reg_res); + return (0); +} + +static device_method_t terasic_mtl_nexus_methods[] = { + DEVMETHOD(device_probe, terasic_mtl_nexus_probe), + DEVMETHOD(device_attach, terasic_mtl_nexus_attach), + DEVMETHOD(device_detach, terasic_mtl_nexus_detach), + { 0, 0 } +}; + +static driver_t terasic_mtl_nexus_driver = { + "terasic_mtl", + terasic_mtl_nexus_methods, + sizeof(struct terasic_mtl_softc), +}; + +static devclass_t terasic_mtl_devclass; + +DRIVER_MODULE(mtl, nexus, terasic_mtl_nexus_driver, terasic_mtl_devclass, 0, + 0); |
