git: ef8397c28e98 - main - bcm5974(4): add Magic Trackpad 2 (USB only) support
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Date: Tue, 25 Apr 2023 09:21:57 UTC
The branch main has been updated by wulf:
URL: https://cgit.FreeBSD.org/src/commit/?id=ef8397c28e981e0115d435aabcf57cee7ea5f5ee
commit ef8397c28e981e0115d435aabcf57cee7ea5f5ee
Author: Val Packett <val@packett.cool>
AuthorDate: 2023-04-25 09:20:53 +0000
Commit: Vladimir Kondratyev <wulf@FreeBSD.org>
CommitDate: 2023-04-25 09:20:53 +0000
bcm5974(4): add Magic Trackpad 2 (USB only) support
The MT2 uses a compact report format, but otherwise is similar in many
ways to the internal trackpads, it even uses the same mode switching
commands.
Reviewed by: wulf
MFC after: 1 month
Differential revision: https://reviews.freebsd.org/D34437
---
sys/dev/hid/bcm5974.c | 86 +++++++++++++++++++++++++++++++++++++++++++++++++--
sys/dev/usb/usbdevs | 1 +
2 files changed, 84 insertions(+), 3 deletions(-)
diff --git a/sys/dev/hid/bcm5974.c b/sys/dev/hid/bcm5974.c
index a7f2a076bc94..dc0edc8dd27d 100644
--- a/sys/dev/hid/bcm5974.c
+++ b/sys/dev/hid/bcm5974.c
@@ -114,11 +114,13 @@ enum tp_type {
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 */
@@ -150,6 +152,36 @@ struct tp_type_params {
.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 */
@@ -191,6 +223,7 @@ enum {
BCM5974_FLAG_WELLSPRING7A,
BCM5974_FLAG_WELLSPRING8,
BCM5974_FLAG_WELLSPRING9,
+ BCM5974_FLAG_MAGIC_TRACKPAD2_USB,
BCM5974_FLAG_MAX,
};
@@ -342,6 +375,15 @@ static const struct bcm5974_dev_params bcm5974_dev_params[BCM5974_FLAG_MAX] = {
.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) { \
@@ -415,6 +457,9 @@ static const struct hid_device_id bcm5974_devs[] = {
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 {
@@ -550,6 +595,7 @@ bcm5974_set_device_mode(struct bcm5974_softc *sc, bool on)
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:
@@ -636,8 +682,10 @@ bcm5974_attach(device_t dev)
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 */
- 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);
+ 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 */
@@ -649,7 +697,8 @@ bcm5974_attach(device_t dev)
0, MAX_FINGERS - 1, 0, 0, 0);
evdev_support_abs(sc->sc_evdev, ABS_MT_TRACKING_ID,
-1, MAX_FINGERS - 1, 0, 0, 0);
- evdev_set_flag(sc->sc_evdev, EVDEV_FLAG_MT_TRACK);
+ 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);
@@ -694,12 +743,17 @@ bcm5974_intr(void *context, void *data, hid_size_t len)
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",
@@ -711,6 +765,32 @@ bcm5974_intr(void *context, void *data, hid_size_t len)
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,
diff --git a/sys/dev/usb/usbdevs b/sys/dev/usb/usbdevs
index 54f0a4ace3a2..3af37f74a8b9 100644
--- a/sys/dev/usb/usbdevs
+++ b/sys/dev/usb/usbdevs
@@ -1193,6 +1193,7 @@ product APPLE WELLSPRING8_JIS 0x0292 Apple Internal Keyboard/Trackpad
product APPLE WELLSPRING9_ANSI 0x0272 Apple Internal Keyboard/Trackpad
product APPLE WELLSPRING9_ISO 0x0273 Apple Internal Keyboard/Trackpad
product APPLE WELLSPRING9_JIS 0x0274 Apple Internal Keyboard/Trackpad
+product APPLE MAGIC_TRACKPAD2 0x0265 Apple Magic Trackpad 2
product APPLE MOUSE 0x0301 Mouse M4848
product APPLE OPTMOUSE 0x0302 Optical mouse
product APPLE MIGHTYMOUSE 0x0304 Mighty Mouse