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| author | Vladimir Kondratyev <wulf@FreeBSD.org> | 2021-11-30 21:29:50 +0000 |
|---|---|---|
| committer | Vladimir Kondratyev <wulf@FreeBSD.org> | 2021-11-30 21:29:50 +0000 |
| commit | c508b0818b245ea136d6538d68868cb3541f8f8f (patch) | |
| tree | 8227020e41a911fd8f7b61682f47b27d0e233dee | |
| parent | d893d9e94d71b6bd0a401ebf3d61b13bf89bb315 (diff) | |
| download | src-c508b0818b245ea136d6538d68868cb3541f8f8f.tar.gz src-c508b0818b245ea136d6538d68868cb3541f8f8f.zip | |
iichid(4): Perform acknowledgement of I2C device interrupt after RESET command
in sampling mode to workaround firmware bug.
This fixes reboot or poweroff on frame.work laptops after first touch.
Reported by: many
PR: 259230
MFC after: 1 week
Tested by: kevans, markj
| -rw-r--r-- | sys/dev/iicbus/iichid.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/sys/dev/iicbus/iichid.c b/sys/dev/iicbus/iichid.c index d95ffb8add88..a36ed9bb8538 100644 --- a/sys/dev/iicbus/iichid.c +++ b/sys/dev/iicbus/iichid.c @@ -1134,6 +1134,11 @@ iichid_attach(device_t dev) &sc->sampling_hysteresis, 0, "number of missing samples before enabling of slow mode"); hid_add_dynamic_quirk(&sc->hw, HQ_IICHID_SAMPLING); + + if (sc->sampling_rate_slow >= 0) { + pause("iichid", (hz + 999) / 1000); + (void)iichid_cmd_read(sc, NULL, 0, NULL); + } #endif /* IICHID_SAMPLING */ child = device_add_child(dev, "hidbus", -1); |