/*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 2012 Huang Wen Hui * Copyright (c) 2021 Vladimir Kondratyev * 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 #include #include #include #include #include #include #include #include #include #include #define HID_DEBUG_VAR bcm5974_debug #include #include #include #include #include #include #include #include "usbdevs.h" #define BCM5974_BUFFER_MAX (248 * 4) /* 4 Type4 SPI frames */ #define BCM5974_TLC_PAGE HUP_GENERIC_DESKTOP #define BCM5974_TLC_USAGE HUG_MOUSE /* magic to switch device from HID (default) mode into raw */ /* Type1 & Type2 trackpads */ #define BCM5974_USB_IFACE_INDEX 0 #define BCM5974_USB_REPORT_LEN 8 #define BCM5974_USB_REPORT_ID 0 #define BCM5974_USB_MODE_RAW 0x01 #define BCM5974_USB_MODE_HID 0x08 /* Type4 trackpads */ #define BCM5974_HID_REPORT_LEN 2 #define BCM5974_HID_REPORT_ID 2 #define BCM5974_HID_MODE_RAW 0x01 #define BCM5974_HID_MODE_HID 0x00 /* Tunables */ static SYSCTL_NODE(_hw_hid, OID_AUTO, bcm5974, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, "HID wellspring touchpad"); #ifdef HID_DEBUG enum wsp_log_level { BCM5974_LLEVEL_DISABLED = 0, BCM5974_LLEVEL_ERROR, BCM5974_LLEVEL_DEBUG, /* for troubleshooting */ BCM5974_LLEVEL_INFO, /* for diagnostics */ }; /* the default is to only log errors */ static int bcm5974_debug = BCM5974_LLEVEL_ERROR; SYSCTL_INT(_hw_hid_bcm5974, OID_AUTO, debug, CTLFLAG_RWTUN, &bcm5974_debug, BCM5974_LLEVEL_ERROR, "BCM5974 debug level"); #endif /* HID_DEBUG */ /* * Some tables, structures, definitions and constant values for the * touchpad protocol has been copied from Linux's * "drivers/input/mouse/bcm5974.c" which has the following copyright * holders under GPLv2. All device specific code in this driver has * been written from scratch. The decoding algorithm is based on * output from FreeBSD's usbdump. * * Copyright (C) 2008 Henrik Rydberg (rydberg@euromail.se) * Copyright (C) 2008 Scott Shawcroft (scott.shawcroft@gmail.com) * Copyright (C) 2001-2004 Greg Kroah-Hartman (greg@kroah.com) * Copyright (C) 2005 Johannes Berg (johannes@sipsolutions.net) * Copyright (C) 2005 Stelian Pop (stelian@popies.net) * Copyright (C) 2005 Frank Arnold (frank@scirocco-5v-turbo.de) * Copyright (C) 2005 Peter Osterlund (petero2@telia.com) * Copyright (C) 2005 Michael Hanselmann (linux-kernel@hansmi.ch) * Copyright (C) 2006 Nicolas Boichat (nicolas@boichat.ch) */ /* trackpad header types */ enum tp_type { TYPE1, /* plain trackpad */ TYPE2, /* button integrated in trackpad */ TYPE3, /* additional header fields since June 2013 */ TYPE4, /* additional header field for pressure data */ TYPE_MT2U, /* Magic Trackpad 2 USB */ TYPE_CNT }; /* list of device capability bits */ #define HAS_INTEGRATED_BUTTON 1 #define USES_COMPACT_REPORT 2 struct tp_type_params { uint8_t caps; /* device capability bitmask */ uint8_t button; /* offset to button data */ uint8_t offset; /* offset to trackpad finger data */ uint8_t delta; /* offset from header to finger struct */ } const static tp[TYPE_CNT] = { [TYPE1] = { .caps = 0, .button = 0, .offset = 13 * 2, .delta = 0, }, [TYPE2] = { .caps = HAS_INTEGRATED_BUTTON, .button = 15, .offset = 15 * 2, .delta = 0, }, [TYPE3] = { .caps = HAS_INTEGRATED_BUTTON, .button = 23, .offset = 19 * 2, .delta = 0, }, [TYPE4] = { .caps = HAS_INTEGRATED_BUTTON, .button = 31, .offset = 23 * 2, .delta = 2, }, [TYPE_MT2U] = { .caps = HAS_INTEGRATED_BUTTON | USES_COMPACT_REPORT, .button = 1, .offset = 12, .delta = 0, }, }; /* trackpad finger structure - compact version for external "Magic" devices */ struct tp_finger_compact { uint32_t coords; /* not struct directly due to endian conversion */ uint8_t touch_major; uint8_t touch_minor; uint8_t size; uint8_t pressure; unsigned int orientation: 3; unsigned int _unknown1: 1; unsigned int id: 4; } __packed; _Static_assert((sizeof(struct tp_finger_compact) == 9), "tp_finger struct size must be 9"); union tp_finger_compact_coords { uint32_t num; struct { signed int x: 13; signed int y: 13; signed int _unknown: 4; signed int state: 2; } __packed; }; /* trackpad finger structure - little endian */ struct tp_finger { int16_t origin; /* zero when switching track finger */ int16_t abs_x; /* absolute x coodinate */ int16_t abs_y; /* absolute y coodinate */ int16_t rel_x; /* relative x coodinate */ int16_t rel_y; /* relative y coodinate */ int16_t tool_major; /* tool area, major axis */ int16_t tool_minor; /* tool area, minor axis */ int16_t orientation; /* 16384 when point, else 15 bit angle */ int16_t touch_major; /* touch area, major axis */ int16_t touch_minor; /* touch area, minor axis */ int16_t unused[2]; /* zeros */ int16_t pressure; /* pressure on forcetouch touchpad */ int16_t multi; /* one finger: varies, more fingers: * constant */ } __packed; /* trackpad finger data size, empirically at least ten fingers */ #define MAX_FINGERS MAX_MT_SLOTS #define MAX_FINGER_ORIENTATION 16384 enum { BCM5974_FLAG_WELLSPRING1, BCM5974_FLAG_WELLSPRING2, BCM5974_FLAG_WELLSPRING3, BCM5974_FLAG_WELLSPRING4, BCM5974_FLAG_WELLSPRING4A, BCM5974_FLAG_WELLSPRING5, BCM5974_FLAG_WELLSPRING6A, BCM5974_FLAG_WELLSPRING6, BCM5974_FLAG_WELLSPRING5A, BCM5974_FLAG_WELLSPRING7, BCM5974_FLAG_WELLSPRING7A, BCM5974_FLAG_WELLSPRING8, BCM5974_FLAG_WELLSPRING9, BCM5974_FLAG_MAGIC_TRACKPAD2_USB, BCM5974_FLAG_MAX, }; /* device-specific parameters */ struct bcm5974_axis { int snratio; /* signal-to-noise ratio */ int min; /* device minimum reading */ int max; /* device maximum reading */ int size; /* physical size, mm */ }; /* device-specific configuration */ struct bcm5974_dev_params { const struct tp_type_params* tp; struct bcm5974_axis p; /* finger pressure limits */ struct bcm5974_axis w; /* finger width limits */ struct bcm5974_axis x; /* horizontal limits */ struct bcm5974_axis y; /* vertical limits */ struct bcm5974_axis o; /* orientation limits */ }; /* logical signal quality */ #define SN_PRESSURE 45 /* pressure signal-to-noise ratio */ #define SN_WIDTH 25 /* width signal-to-noise ratio */ #define SN_COORD 250 /* coordinate signal-to-noise ratio */ #define SN_ORIENT 10 /* orientation signal-to-noise ratio */ static const struct bcm5974_dev_params bcm5974_dev_params[BCM5974_FLAG_MAX] = { [BCM5974_FLAG_WELLSPRING1] = { .tp = tp + TYPE1, .p = { SN_PRESSURE, 0, 256, 0 }, .w = { SN_WIDTH, 0, 2048, 0 }, .x = { SN_COORD, -4824, 5342, 105 }, .y = { SN_COORD, -172, 5820, 75 }, .o = { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION, 0 }, }, [BCM5974_FLAG_WELLSPRING2] = { .tp = tp + TYPE1, .p = { SN_PRESSURE, 0, 256, 0 }, .w = { SN_WIDTH, 0, 2048, 0 }, .x = { SN_COORD, -4824, 4824, 105 }, .y = { SN_COORD, -172, 4290, 75 }, .o = { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION, 0 }, }, [BCM5974_FLAG_WELLSPRING3] = { .tp = tp + TYPE2, .p = { SN_PRESSURE, 0, 300, 0 }, .w = { SN_WIDTH, 0, 2048, 0 }, .x = { SN_COORD, -4460, 5166, 105 }, .y = { SN_COORD, -75, 6700, 75 }, .o = { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION, 0 }, }, [BCM5974_FLAG_WELLSPRING4] = { .tp = tp + TYPE2, .p = { SN_PRESSURE, 0, 300, 0 }, .w = { SN_WIDTH, 0, 2048, 0 }, .x = { SN_COORD, -4620, 5140, 105 }, .y = { SN_COORD, -150, 6600, 75 }, .o = { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION, 0 }, }, [BCM5974_FLAG_WELLSPRING4A] = { .tp = tp + TYPE2, .p = { SN_PRESSURE, 0, 300, 0 }, .w = { SN_WIDTH, 0, 2048, 0 }, .x = { SN_COORD, -4616, 5112, 105 }, .y = { SN_COORD, -142, 5234, 75 }, .o = { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION, 0 }, }, [BCM5974_FLAG_WELLSPRING5] = { .tp = tp + TYPE2, .p = { SN_PRESSURE, 0, 300, 0 }, .w = { SN_WIDTH, 0, 2048, 0 }, .x = { SN_COORD, -4415, 5050, 105 }, .y = { SN_COORD, -55, 6680, 75 }, .o = { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION, 0 }, }, [BCM5974_FLAG_WELLSPRING6] = { .tp = tp + TYPE2, .p = { SN_PRESSURE, 0, 300, 0 }, .w = { SN_WIDTH, 0, 2048, 0 }, .x = { SN_COORD, -4620, 5140, 105 }, .y = { SN_COORD, -150, 6600, 75 }, .o = { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION, 0 }, }, [BCM5974_FLAG_WELLSPRING5A] = { .tp = tp + TYPE2, .p = { SN_PRESSURE, 0, 300, 0 }, .w = { SN_WIDTH, 0, 2048, 0 }, .x = { SN_COORD, -4750, 5280, 105 }, .y = { SN_COORD, -150, 6730, 75 }, .o = { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION, 0 }, }, [BCM5974_FLAG_WELLSPRING6A] = { .tp = tp + TYPE2, .p = { SN_PRESSURE, 0, 300, 0 }, .w = { SN_WIDTH, 0, 2048, 0 }, .x = { SN_COORD, -4620, 5140, 105 }, .y = { SN_COORD, -150, 6600, 75 }, .o = { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION, 0 }, }, [BCM5974_FLAG_WELLSPRING7] = { .tp = tp + TYPE2, .p = { SN_PRESSURE, 0, 300, 0 }, .w = { SN_WIDTH, 0, 2048, 0 }, .x = { SN_COORD, -4750, 5280, 105 }, .y = { SN_COORD, -150, 6730, 75 }, .o = { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION, 0 }, }, [BCM5974_FLAG_WELLSPRING7A] = { .tp = tp + TYPE2, .p = { SN_PRESSURE, 0, 300, 0 }, .w = { SN_WIDTH, 0, 2048, 0 }, .x = { SN_COORD, -4750, 5280, 105 }, .y = { SN_COORD, -150, 6730, 75 }, .o = { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION, 0 }, }, [BCM5974_FLAG_WELLSPRING8] = { .tp = tp + TYPE3, .p = { SN_PRESSURE, 0, 300, 0 }, .w = { SN_WIDTH, 0, 2048, 0 }, .x = { SN_COORD, -4620, 5140, 105 }, .y = { SN_COORD, -150, 6600, 75 }, .o = { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION, 0 }, }, [BCM5974_FLAG_WELLSPRING9] = { .tp = tp + TYPE4, .p = { SN_PRESSURE, 0, 300, 0 }, .w = { SN_WIDTH, 0, 2048, 0 }, .x = { SN_COORD, -4828, 5345, 105 }, .y = { SN_COORD, -203, 6803, 75 }, .o = { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION, 0 }, }, [BCM5974_FLAG_MAGIC_TRACKPAD2_USB] = { .tp = tp + TYPE_MT2U, .p = { SN_PRESSURE, 0, 256, 256 }, .w = { SN_WIDTH, 0, 2048, 0 }, .x = { SN_COORD, -3678, 3934, 48 }, .y = { SN_COORD, -2478, 2587, 44 }, .o = { SN_ORIENT, -MAX_FINGER_ORIENTATION, MAX_FINGER_ORIENTATION, 0 }, }, }; #define BCM5974_DEV(v,p,i) { \ HID_BVPI(BUS_USB, USB_VENDOR_##v, USB_PRODUCT_##v##_##p, i), \ HID_TLC(BCM5974_TLC_PAGE, BCM5974_TLC_USAGE), \ } static const struct hid_device_id bcm5974_devs[] = { /* MacbookAir1.1 */ BCM5974_DEV(APPLE, WELLSPRING_ANSI, BCM5974_FLAG_WELLSPRING1), BCM5974_DEV(APPLE, WELLSPRING_ISO, BCM5974_FLAG_WELLSPRING1), BCM5974_DEV(APPLE, WELLSPRING_JIS, BCM5974_FLAG_WELLSPRING1), /* MacbookProPenryn, aka wellspring2 */ BCM5974_DEV(APPLE, WELLSPRING2_ANSI, BCM5974_FLAG_WELLSPRING2), BCM5974_DEV(APPLE, WELLSPRING2_ISO, BCM5974_FLAG_WELLSPRING2), BCM5974_DEV(APPLE, WELLSPRING2_JIS, BCM5974_FLAG_WELLSPRING2), /* Macbook5,1 (unibody), aka wellspring3 */ BCM5974_DEV(APPLE, WELLSPRING3_ANSI, BCM5974_FLAG_WELLSPRING3), BCM5974_DEV(APPLE, WELLSPRING3_ISO, BCM5974_FLAG_WELLSPRING3), BCM5974_DEV(APPLE, WELLSPRING3_JIS, BCM5974_FLAG_WELLSPRING3), /* MacbookAir3,2 (unibody), aka wellspring4 */ BCM5974_DEV(APPLE, WELLSPRING4_ANSI, BCM5974_FLAG_WELLSPRING4), BCM5974_DEV(APPLE, WELLSPRING4_ISO, BCM5974_FLAG_WELLSPRING4), BCM5974_DEV(APPLE, WELLSPRING4_JIS, BCM5974_FLAG_WELLSPRING4), /* MacbookAir3,1 (unibody), aka wellspring4 */ BCM5974_DEV(APPLE, WELLSPRING4A_ANSI, BCM5974_FLAG_WELLSPRING4A), BCM5974_DEV(APPLE, WELLSPRING4A_ISO, BCM5974_FLAG_WELLSPRING4A), BCM5974_DEV(APPLE, WELLSPRING4A_JIS, BCM5974_FLAG_WELLSPRING4A), /* Macbook8 (unibody, March 2011) */ BCM5974_DEV(APPLE, WELLSPRING5_ANSI, BCM5974_FLAG_WELLSPRING5), BCM5974_DEV(APPLE, WELLSPRING5_ISO, BCM5974_FLAG_WELLSPRING5), BCM5974_DEV(APPLE, WELLSPRING5_JIS, BCM5974_FLAG_WELLSPRING5), /* MacbookAir4,1 (unibody, July 2011) */ BCM5974_DEV(APPLE, WELLSPRING6A_ANSI, BCM5974_FLAG_WELLSPRING6A), BCM5974_DEV(APPLE, WELLSPRING6A_ISO, BCM5974_FLAG_WELLSPRING6A), BCM5974_DEV(APPLE, WELLSPRING6A_JIS, BCM5974_FLAG_WELLSPRING6A), /* MacbookAir4,2 (unibody, July 2011) */ BCM5974_DEV(APPLE, WELLSPRING6_ANSI, BCM5974_FLAG_WELLSPRING6), BCM5974_DEV(APPLE, WELLSPRING6_ISO, BCM5974_FLAG_WELLSPRING6), BCM5974_DEV(APPLE, WELLSPRING6_JIS, BCM5974_FLAG_WELLSPRING6), /* Macbook8,2 (unibody) */ BCM5974_DEV(APPLE, WELLSPRING5A_ANSI, BCM5974_FLAG_WELLSPRING5A), BCM5974_DEV(APPLE, WELLSPRING5A_ISO, BCM5974_FLAG_WELLSPRING5A), BCM5974_DEV(APPLE, WELLSPRING5A_JIS, BCM5974_FLAG_WELLSPRING5A), /* MacbookPro10,1 (unibody, June 2012) */ /* MacbookPro11,1-3 (unibody, June 2013) */ BCM5974_DEV(APPLE, WELLSPRING7_ANSI, BCM5974_FLAG_WELLSPRING7), BCM5974_DEV(APPLE, WELLSPRING7_ISO, BCM5974_FLAG_WELLSPRING7), BCM5974_DEV(APPLE, WELLSPRING7_JIS, BCM5974_FLAG_WELLSPRING7), /* MacbookPro10,2 (unibody, October 2012) */ BCM5974_DEV(APPLE, WELLSPRING7A_ANSI, BCM5974_FLAG_WELLSPRING7A), BCM5974_DEV(APPLE, WELLSPRING7A_ISO, BCM5974_FLAG_WELLSPRING7A), BCM5974_DEV(APPLE, WELLSPRING7A_JIS, BCM5974_FLAG_WELLSPRING7A), /* MacbookAir6,2 (unibody, June 2013) */ BCM5974_DEV(APPLE, WELLSPRING8_ANSI, BCM5974_FLAG_WELLSPRING8), BCM5974_DEV(APPLE, WELLSPRING8_ISO, BCM5974_FLAG_WELLSPRING8), BCM5974_DEV(APPLE, WELLSPRING8_JIS, BCM5974_FLAG_WELLSPRING8), /* MacbookPro12,1 MacbookPro11,4 */ BCM5974_DEV(APPLE, WELLSPRING9_ANSI, BCM5974_FLAG_WELLSPRING9), BCM5974_DEV(APPLE, WELLSPRING9_ISO, BCM5974_FLAG_WELLSPRING9), BCM5974_DEV(APPLE, WELLSPRING9_JIS, BCM5974_FLAG_WELLSPRING9), /* External "Magic" devices */ BCM5974_DEV(APPLE, MAGIC_TRACKPAD2, BCM5974_FLAG_MAGIC_TRACKPAD2_USB), }; struct bcm5974_softc { device_t sc_dev; struct evdev_dev *sc_evdev; /* device configuration */ const struct bcm5974_dev_params *sc_params; }; static const uint8_t bcm5974_rdesc[] = { 0x05, BCM5974_TLC_PAGE, /* Usage Page (BCM5974_TLC_PAGE) */ 0x09, BCM5974_TLC_USAGE,/* Usage (BCM5974_TLC_USAGE) */ 0xA1, 0x01, /* Collection (Application) */ 0x06, 0x00, 0xFF, /* Usage Page (Vendor Defined 0xFF00) */ 0x09, 0x01, /* Usage (0x01) */ 0x15, 0x00, /* Logical Minimum (0) */ 0x26, 0xFF, 0x00, /* Logical Maximum (255) */ 0x75, 0x08, /* Report Size (8) */ 0x96, /* Report Count (BCM5974_BUFFER_MAX) */ BCM5974_BUFFER_MAX & 0xFF, BCM5974_BUFFER_MAX >> 8 & 0xFF, 0x81, 0x02, /* Input (Data,Var,Abs) */ 0xC0, /* End Collection */ }; /* * function prototypes */ static evdev_open_t bcm5974_ev_open; static evdev_close_t bcm5974_ev_close; static const struct evdev_methods bcm5974_evdev_methods = { .ev_open = &bcm5974_ev_open, .ev_close = &bcm5974_ev_close, }; static hid_intr_t bcm5974_intr; /* Device methods. */ static device_identify_t bcm5974_identify; static device_probe_t bcm5974_probe; static device_attach_t bcm5974_attach; static device_detach_t bcm5974_detach; /* * Type1 and Type2 touchpads use keyboard USB interface to switch from HID to * RAW mode. Although it is possible to extend hkbd driver to support such a * mode change requests, it's not wanted due to cross device tree dependencies. * So, find lowest common denominator (struct usb_device of grandparent usbhid * driver) of touchpad and keyboard drivers and issue direct USB requests. */ static int bcm5974_set_device_mode_usb(struct bcm5974_softc *sc, bool on) { uint8_t mode_bytes[BCM5974_USB_REPORT_LEN]; struct usb_ctl_request ucr; int err; ucr.ucr_request.bmRequestType = UT_READ_CLASS_INTERFACE; ucr.ucr_request.bRequest = UR_GET_REPORT; USETW2(ucr.ucr_request.wValue, UHID_FEATURE_REPORT, BCM5974_USB_REPORT_ID); ucr.ucr_request.wIndex[0] = BCM5974_USB_IFACE_INDEX; ucr.ucr_request.wIndex[1] = 0; USETW(ucr.ucr_request.wLength, BCM5974_USB_REPORT_LEN); ucr.ucr_data = mode_bytes; err = hid_ioctl(sc->sc_dev, USB_REQUEST, (uintptr_t)&ucr); if (err != 0) { DPRINTF("Failed to read device mode (%d)\n", err); return (EIO); } #if 0 /* * XXX Need to wait at least 250ms for hardware to get * ready. The device mode handling appears to be handled * asynchronously and we should not issue these commands too * quickly. */ pause("WHW", hz / 4); #endif mode_bytes[0] = on ? BCM5974_USB_MODE_RAW : BCM5974_USB_MODE_HID; ucr.ucr_request.bmRequestType = UT_WRITE_CLASS_INTERFACE; ucr.ucr_request.bRequest = UR_SET_REPORT; err = hid_ioctl(sc->sc_dev, USB_REQUEST, (uintptr_t)&ucr); if (err != 0) { DPRINTF("Failed to write device mode (%d)\n", err); return (EIO); } return (0); } static int bcm5974_set_device_mode_hid(struct bcm5974_softc *sc, bool on) { uint8_t mode_bytes[BCM5974_HID_REPORT_LEN] = { BCM5974_HID_REPORT_ID, on ? BCM5974_HID_MODE_RAW : BCM5974_HID_MODE_HID, }; #if 0 int err; err = hid_get_report(sc->sc_dev, mode_bytes, BCM5974_HID_REPORT_LEN, NULL, HID_FEATURE_REPORT, BCM5974_HID_REPORT_ID); if (err != 0) { DPRINTF("Failed to read device mode (%d)\n", err); return (err); } /* * XXX Need to wait at least 250ms for hardware to get * ready. The device mode handling appears to be handled * asynchronously and we should not issue these commands too * quickly. */ pause("WHW", hz / 4); mode_bytes[1] = on ? BCM5974_HID_MODE_RAW : BCM5974_HID_MODE_HID; #endif return (hid_set_report(sc->sc_dev, mode_bytes, BCM5974_HID_REPORT_LEN, HID_FEATURE_REPORT, BCM5974_HID_REPORT_ID)); } static int bcm5974_set_device_mode(struct bcm5974_softc *sc, bool on) { int err = 0; switch (sc->sc_params->tp - tp) { case TYPE1: case TYPE2: err = bcm5974_set_device_mode_usb(sc, on); break; case TYPE3: /* Type 3 does not require a mode switch */ break; case TYPE4: case TYPE_MT2U: err = bcm5974_set_device_mode_hid(sc, on); break; default: KASSERT(0 == 1, ("Unknown trackpad type")); } return (err); } static void bcm5974_identify(driver_t *driver, device_t parent) { void *d_ptr; hid_size_t d_len; /* * The bcm5974 touchpad has no stable RAW mode TLC in its report * descriptor. So replace existing HID mode mouse TLC with dummy one * to set proper transport layer buffer sizes, make driver probe * simpler and prevent unwanted hms driver attachment. */ if (HIDBUS_LOOKUP_ID(parent, bcm5974_devs) != NULL && hid_get_report_descr(parent, &d_ptr, &d_len) == 0 && hid_is_mouse(d_ptr, d_len)) hid_set_report_descr(parent, bcm5974_rdesc, sizeof(bcm5974_rdesc)); } static int bcm5974_probe(device_t dev) { int err; err = HIDBUS_LOOKUP_DRIVER_INFO(dev, bcm5974_devs); if (err != 0) return (err); hidbus_set_desc(dev, "Touchpad"); return (BUS_PROBE_DEFAULT); } static int bcm5974_attach(device_t dev) { struct bcm5974_softc *sc = device_get_softc(dev); const struct hid_device_info *hw = hid_get_device_info(dev); int err; DPRINTFN(BCM5974_LLEVEL_INFO, "sc=%p\n", sc); sc->sc_dev = dev; /* get device specific configuration */ sc->sc_params = bcm5974_dev_params + hidbus_get_driver_info(dev); sc->sc_evdev = evdev_alloc(); evdev_set_name(sc->sc_evdev, device_get_desc(dev)); evdev_set_phys(sc->sc_evdev, device_get_nameunit(dev)); evdev_set_id(sc->sc_evdev, hw->idBus, hw->idVendor, hw->idProduct, hw->idVersion); evdev_set_serial(sc->sc_evdev, hw->serial); evdev_set_methods(sc->sc_evdev, sc, &bcm5974_evdev_methods); evdev_support_prop(sc->sc_evdev, INPUT_PROP_POINTER); 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_set_flag(sc->sc_evdev, EVDEV_FLAG_EXT_EPOCH); /* hidbus child */ #define BCM5974_ABS(evdev, code, param) \ evdev_support_abs((evdev), (code), (param).min, (param).max, \ ((param).max - (param).min) / (param).snratio, 0, \ (param).size != 0 ? ((param).max - (param).min) / (param).size : 0); /* finger position */ BCM5974_ABS(sc->sc_evdev, ABS_MT_POSITION_X, sc->sc_params->x); BCM5974_ABS(sc->sc_evdev, ABS_MT_POSITION_Y, sc->sc_params->y); /* finger pressure */ BCM5974_ABS(sc->sc_evdev, ABS_MT_PRESSURE, sc->sc_params->p); /* finger touch area */ BCM5974_ABS(sc->sc_evdev, ABS_MT_TOUCH_MAJOR, sc->sc_params->w); BCM5974_ABS(sc->sc_evdev, ABS_MT_TOUCH_MINOR, sc->sc_params->w); /* finger approach area */ if ((sc->sc_params->tp->caps & USES_COMPACT_REPORT) == 0) { BCM5974_ABS(sc->sc_evdev, ABS_MT_WIDTH_MAJOR, sc->sc_params->w); BCM5974_ABS(sc->sc_evdev, ABS_MT_WIDTH_MINOR, sc->sc_params->w); } /* finger orientation */ BCM5974_ABS(sc->sc_evdev, ABS_MT_ORIENTATION, sc->sc_params->o); /* button properties */ evdev_support_key(sc->sc_evdev, BTN_LEFT); if ((sc->sc_params->tp->caps & HAS_INTEGRATED_BUTTON) != 0) evdev_support_prop(sc->sc_evdev, INPUT_PROP_BUTTONPAD); /* Enable automatic touch assignment for type B MT protocol */ evdev_support_abs(sc->sc_evdev, ABS_MT_SLOT, 0, MAX_FINGERS - 1, 0, 0, 0); evdev_support_abs(sc->sc_evdev, ABS_MT_TRACKING_ID, -1, MAX_FINGERS - 1, 0, 0, 0); if ((sc->sc_params->tp->caps & USES_COMPACT_REPORT) == 0) evdev_set_flag(sc->sc_evdev, EVDEV_FLAG_MT_TRACK); evdev_set_flag(sc->sc_evdev, EVDEV_FLAG_MT_AUTOREL); /* Synaptics compatibility events */ evdev_set_flag(sc->sc_evdev, EVDEV_FLAG_MT_STCOMPAT); err = evdev_register(sc->sc_evdev); if (err) goto detach; hidbus_set_intr(dev, bcm5974_intr, sc); return (0); detach: bcm5974_detach(dev); return (ENOMEM); } static int bcm5974_detach(device_t dev) { struct bcm5974_softc *sc = device_get_softc(dev); evdev_free(sc->sc_evdev); return (0); } static void bcm5974_intr(void *context, void *data, hid_size_t len) { struct bcm5974_softc *sc = context; const struct bcm5974_dev_params *params = sc->sc_params; union evdev_mt_slot slot_data; struct tp_finger *f; struct tp_finger_compact *fc; union tp_finger_compact_coords coords; int ntouch; /* the finger number in touch */ int ibt; /* button status */ int i; int slot; uint8_t fsize = sizeof(struct tp_finger) + params->tp->delta; if ((params->tp->caps & USES_COMPACT_REPORT) != 0) fsize = sizeof(struct tp_finger_compact) + params->tp->delta; if ((len < params->tp->offset + fsize) || ((len - params->tp->offset) % fsize) != 0) { DPRINTFN(BCM5974_LLEVEL_INFO, "Invalid length: %d, %x, %x\n", len, sc->tp_data[0], sc->tp_data[1]); return; } ibt = ((uint8_t *)data)[params->tp->button]; ntouch = (len - params->tp->offset) / fsize; for (i = 0, slot = 0; i != ntouch; i++) { if ((params->tp->caps & USES_COMPACT_REPORT) != 0) { fc = (struct tp_finger_compact *)(((uint8_t *)data) + params->tp->offset + params->tp->delta + i * fsize); coords.num = le32toh(fc->coords); DPRINTFN(BCM5974_LLEVEL_INFO, "[%d]ibt=%d, taps=%d, x=%5d, y=%5d, state=%4d, " "tchmaj=%4d, tchmin=%4d, size=%4d, pressure=%4d, " "ot=%4x, id=%4x\n", i, ibt, ntouch, coords.x, coords.y, fc->state, fc->touch_major, fc->touch_minor, fc->size, fc->pressure, fc->orientation, fc->id); if (fc->touch_major == 0) continue; slot_data = (union evdev_mt_slot) { .id = fc->id, .x = coords.x, .y = params->y.min + params->y.max - coords.y, .p = fc->pressure, .maj = fc->touch_major << 2, .min = fc->touch_minor << 2, .ori = -fc->orientation, }; evdev_mt_push_slot(sc->sc_evdev, slot, &slot_data); slot++; continue; } f = (struct tp_finger *)(((uint8_t *)data) + params->tp->offset + params->tp->delta + i * fsize); DPRINTFN(BCM5974_LLEVEL_INFO, "[%d]ibt=%d, taps=%d, o=%4d, ax=%5d, ay=%5d, " "rx=%5d, ry=%5d, tlmaj=%4d, tlmin=%4d, ot=%4x, " "tchmaj=%4d, tchmin=%4d, presure=%4d, m=%4x\n", i, ibt, ntouch, le16toh(f->origin), le16toh(f->abs_x), le16toh(f->abs_y), le16toh(f->rel_x), le16toh(f->rel_y), le16toh(f->tool_major), le16toh(f->tool_minor), le16toh(f->orientation), le16toh(f->touch_major), le16toh(f->touch_minor), le16toh(f->pressure), le16toh(f->multi)); if (f->touch_major == 0) continue; slot_data = (union evdev_mt_slot) { .id = slot, .x = le16toh(f->abs_x), .y = params->y.min + params->y.max - le16toh(f->abs_y), .p = le16toh(f->pressure), .maj = le16toh(f->touch_major) << 1, .min = le16toh(f->touch_minor) << 1, .w_maj = le16toh(f->tool_major) << 1, .w_min = le16toh(f->tool_minor) << 1, .ori = params->o.max - le16toh(f->orientation), }; evdev_mt_push_slot(sc->sc_evdev, slot, &slot_data); slot++; } evdev_push_key(sc->sc_evdev, BTN_LEFT, ibt); evdev_sync(sc->sc_evdev); } static int bcm5974_ev_open(struct evdev_dev *evdev) { struct bcm5974_softc *sc = evdev_get_softc(evdev); int err; /* * By default the touchpad behaves like a HID device, sending * packets with reportID = 8. Such reports contain only * limited information. They encode movement deltas and button * events, but do not include data from the pressure * sensors. The device input mode can be switched from HID * reports to raw sensor data using vendor-specific USB * control commands: */ err = bcm5974_set_device_mode(sc, true); if (err != 0) { DPRINTF("failed to set mode to RAW MODE (%d)\n", err); return (err); } return (hidbus_intr_start(sc->sc_dev)); } static int bcm5974_ev_close(struct evdev_dev *evdev) { struct bcm5974_softc *sc = evdev_get_softc(evdev); int err; err = hidbus_intr_stop(sc->sc_dev); if (err != 0) return (err); /* * During re-enumeration of the device we need to force the * device back into HID mode before switching it to RAW * mode. Else the device does not work like expected. */ err = bcm5974_set_device_mode(sc, false); if (err != 0) DPRINTF("Failed to set mode to HID MODE (%d)\n", err); return (err); } static device_method_t bcm5974_methods[] = { /* Device interface */ DEVMETHOD(device_identify, bcm5974_identify), DEVMETHOD(device_probe, bcm5974_probe), DEVMETHOD(device_attach, bcm5974_attach), DEVMETHOD(device_detach, bcm5974_detach), DEVMETHOD_END }; static driver_t bcm5974_driver = { .name = "bcm5974", .methods = bcm5974_methods, .size = sizeof(struct bcm5974_softc) }; static devclass_t bcm5974_devclass; DRIVER_MODULE(bcm5974, hidbus, bcm5974_driver, bcm5974_devclass, NULL, 0); MODULE_DEPEND(bcm5974, hidbus, 1, 1, 1); MODULE_DEPEND(bcm5974, hid, 1, 1, 1); MODULE_DEPEND(bcm5974, evdev, 1, 1, 1); MODULE_VERSION(bcm5974, 1); HID_PNP_INFO(bcm5974_devs);