Index: head/sys/arm/broadcom/bcm2835/bcm2835_ft5406.c =================================================================== --- head/sys/arm/broadcom/bcm2835/bcm2835_ft5406.c (revision 306617) +++ head/sys/arm/broadcom/bcm2835/bcm2835_ft5406.c (revision 306618) @@ -1,338 +1,339 @@ /*- * Copyright (C) 2016 Oleksandr Tymoshenko * 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. * */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "mbox_if.h" #ifdef DEBUG #define DPRINTF(fmt, ...) do { \ printf("%s:%u: ", __func__, __LINE__); \ printf(fmt, ##__VA_ARGS__); \ } while (0) #else #define DPRINTF(fmt, ...) #endif #define FT5406_LOCK(_sc) \ mtx_lock(&(_sc)->sc_mtx) #define FT5406_UNLOCK(_sc) \ mtx_unlock(&(_sc)->sc_mtx) #define FT5406_LOCK_INIT(_sc) \ mtx_init(&_sc->sc_mtx, device_get_nameunit(_sc->sc_dev), \ "ft5406", MTX_DEF) #define FT5406_LOCK_DESTROY(_sc) \ mtx_destroy(&_sc->sc_mtx); #define FT5406_LOCK_ASSERT(_sc) \ mtx_assert(&(_sc)->sc_mtx, MA_OWNED) #define FT5406_DEVICE_MODE 0 #define FT5406_GESTURE_ID 1 #define FT5406_NUM_POINTS 2 #define FT5406_POINT_XH(n) (0 + 3 + (n)*6) #define FT5406_POINT_XL(n) (1 + 3 + (n)*6) #define FT5406_POINT_YH(n) (2 + 3 + (n)*6) #define FT5406_POINT_YL(n) (3 + 3 + (n)*6) #define FT5406_WINDOW_SIZE 64 #define GET_NUM_POINTS(buf) (buf[FT5406_NUM_POINTS]) #define GET_X(buf, n) (((buf[FT5406_POINT_XH(n)] & 0xf) << 8) | \ (buf[FT5406_POINT_XL(n)])) #define GET_Y(buf, n) (((buf[FT5406_POINT_YH(n)] & 0xf) << 8) | \ (buf[FT5406_POINT_YL(n)])) #define GET_TOUCH_ID(buf, n) ((buf[FT5406_POINT_YH(n)] >> 4) & 0xf) #define NO_POINTS 99 #define SCREEN_WIDTH 800 #define SCREEN_HEIGHT 480 struct ft5406ts_softc { device_t sc_dev; struct mtx sc_mtx; struct proc *sc_worker; /* mbox buffer (mapped to KVA) */ uint8_t *touch_buf; /* initial hook for waiting mbox intr */ struct intr_config_hook sc_init_hook; struct evdev_dev *sc_evdev; int sc_detaching; }; static void ft5406ts_worker(void *data) { struct ft5406ts_softc *sc = (struct ft5406ts_softc *)data; int points; int id, new_x, new_y, i, new_pen_down, updated; int x, y, pen_down; uint8_t window[FT5406_WINDOW_SIZE]; int tick; /* 60Hz */ tick = hz*17/1000; if (tick == 0) tick = 1; x = y = -1; pen_down = 0; FT5406_LOCK(sc); while(1) { msleep(sc, &sc->sc_mtx, PCATCH | PZERO, "ft5406ts", tick); if (sc->sc_detaching) break; memcpy(window, sc->touch_buf, sizeof(window)); sc->touch_buf[FT5406_NUM_POINTS] = NO_POINTS; points = GET_NUM_POINTS(window); /* * No update from VC - do nothing */ if (points == NO_POINTS) continue; /* No points and pen is already up */ if ((points == 0) && !pen_down) continue; new_pen_down = 0; for (i = 0; i < points; i++) { id = GET_TOUCH_ID(window, 0); /* For now consider only touch 0 */ if (id != 0) continue; new_pen_down = 1; new_x = GET_X(window, 0); new_y = GET_Y(window, 0); } updated = 0; if (new_x != x) { x = new_x; updated = 1; } if (new_y != y) { y = new_y; updated = 1; } if (new_pen_down != pen_down) { pen_down = new_pen_down; updated = 1; } if (updated) { evdev_push_event(sc->sc_evdev, EV_ABS, ABS_X, x); evdev_push_event(sc->sc_evdev, EV_ABS, ABS_Y, y); evdev_push_event(sc->sc_evdev, EV_KEY, BTN_TOUCH, pen_down); evdev_sync(sc->sc_evdev); } } FT5406_UNLOCK(sc); kproc_exit(0); } static void ft5406ts_init(void *arg) { struct ft5406ts_softc *sc = arg; struct bcm2835_mbox_tag_touchbuf msg; uint32_t touchbuf; int err; /* release this hook (continue boot) */ config_intrhook_disestablish(&sc->sc_init_hook); memset(&msg, 0, sizeof(msg)); msg.hdr.buf_size = sizeof(msg); msg.hdr.code = BCM2835_MBOX_CODE_REQ; msg.tag_hdr.tag = BCM2835_MBOX_TAG_GET_TOUCHBUF; msg.tag_hdr.val_buf_size = sizeof(msg.body); msg.tag_hdr.val_len = sizeof(msg.body); msg.end_tag = 0; /* call mailbox property */ err = bcm2835_mbox_property(&msg, sizeof(msg)); if (err) { device_printf(sc->sc_dev, "failed to get touchbuf address\n"); return; } if (msg.body.resp.address == 0) { device_printf(sc->sc_dev, "touchscreen not detected\n"); return; } touchbuf = VCBUS_TO_PHYS(msg.body.resp.address); sc->touch_buf = (uint8_t*)pmap_mapdev(touchbuf, FT5406_WINDOW_SIZE); sc->sc_evdev = evdev_alloc(); evdev_set_name(sc->sc_evdev, device_get_desc(sc->sc_dev)); evdev_set_phys(sc->sc_evdev, device_get_nameunit(sc->sc_dev)); evdev_set_id(sc->sc_evdev, BUS_VIRTUAL, 0, 0, 0); evdev_support_prop(sc->sc_evdev, INPUT_PROP_DIRECT); evdev_support_event(sc->sc_evdev, EV_SYN); evdev_support_event(sc->sc_evdev, EV_ABS); evdev_support_event(sc->sc_evdev, EV_KEY); evdev_support_abs(sc->sc_evdev, ABS_X, 0, 0, SCREEN_WIDTH, 0, 0, 0); evdev_support_abs(sc->sc_evdev, ABS_Y, 0, 0, SCREEN_HEIGHT, 0, 0, 0); evdev_support_key(sc->sc_evdev, BTN_TOUCH); err = evdev_register(sc->sc_evdev); if (err) { evdev_free(sc->sc_evdev); return; } sc->touch_buf[FT5406_NUM_POINTS] = NO_POINTS; if (kproc_create(ft5406ts_worker, (void*)sc, &sc->sc_worker, 0, 0, "ft5406ts_worker") != 0) { printf("failed to create ft5406ts_worker\n"); } } static int ft5406ts_probe(device_t dev) { if (!ofw_bus_is_compatible(dev, "rpi,rpi-ft5406")) return (ENXIO); device_set_desc(dev, "FT5406 touchscreen (VC memory interface)"); return (BUS_PROBE_DEFAULT); } static int ft5406ts_attach(device_t dev) { struct ft5406ts_softc *sc; /* set self dev */ sc = device_get_softc(dev); sc->sc_dev = dev; /* register callback for using mbox when interrupts are enabled */ sc->sc_init_hook.ich_func = ft5406ts_init; sc->sc_init_hook.ich_arg = sc; + FT5406_LOCK_INIT(sc); + if (config_intrhook_establish(&sc->sc_init_hook) != 0) { device_printf(dev, "config_intrhook_establish failed\n"); return (ENOMEM); } - FT5406_LOCK_INIT(sc); - return (0); } static int ft5406ts_detach(device_t dev) { struct ft5406ts_softc *sc; sc = device_get_softc(dev); FT5406_LOCK(sc); if (sc->sc_worker) sc->sc_detaching = 1; + wakeup(sc); + FT5406_UNLOCK(sc); if (sc->sc_evdev) evdev_free(sc->sc_evdev); - FT5406_UNLOCK(sc); FT5406_LOCK_DESTROY(sc); return (0); } static device_method_t ft5406ts_methods[] = { /* Device interface */ DEVMETHOD(device_probe, ft5406ts_probe), DEVMETHOD(device_attach, ft5406ts_attach), DEVMETHOD(device_detach, ft5406ts_detach), DEVMETHOD_END }; static devclass_t ft5406ts_devclass; static driver_t ft5406ts_driver = { "ft5406ts", ft5406ts_methods, sizeof(struct ft5406ts_softc), }; DRIVER_MODULE(ft5406ts, ofwbus, ft5406ts_driver, ft5406ts_devclass, 0, 0); MODULE_DEPEND(ft5406ts, evdev, 1, 1, 1);