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Implement a method described in NetBSD PR 36652 for coping with the

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BAD VCC bit.
This commit is contained in:
Warner Losh 2008-12-05 04:43:25 +00:00
parent 9036240993
commit 414f7ec8bd
1 changed files with 12 additions and 1 deletions
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13
sys/dev/pccbb/pccbb.c
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@ -837,7 +837,18 @@ cbb_power(device_t brdev, int volts)
}
if (status & CBB_STATE_BAD_VCC_REQ) {
device_printf(sc->dev, "Bad Vcc requested\n");
/* XXX Do we want to do something to mitigate things here? */
/*
* Turn off the power, and try again. Retrigger other
* active interrupts via force register. From NetBSD
* PR 36652, coded by me to description there.
*/
sock_ctrl &= ~CBB_SOCKET_CTRL_VCCMASK;
sock_ctrl &= ~CBB_SOCKET_CTRL_VPPMASK;
cbb_set(sc, CBB_SOCKET_CONTROL, sock_ctrl);
status &= ~CBB_STATE_BAD_VCC_REQ;
status &= ~CBB_STATE_DATA_LOST;
status |= CBB_FORCE_CV_TEST;
cbb_set(sc, CBB_SOCKET_FORCE, status);
goto done;
}
if (sc->chipset == CB_TOPIC97) {