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Enable smu(4) to report fan speeds on late-model Powermac G5s.

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This commit is contained in:
nwhitehorn 2010-05-16 19:57:38 +00:00
parent 15e5afeb5b
commit ea2ffba9d7
1 changed files with 28 additions and 5 deletions
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33
sys/powerpc/powermac/smu.c
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@ -662,14 +662,34 @@ static int
smu_fan_read_rpm(device_t smu, struct smu_fan *fan)
{
struct smu_cmd cmd;
int rpm, error;
cmd.cmd = SMU_FAN;
cmd.len = 1;
cmd.data[0] = 1;
if (!fan->old_style) {
cmd.cmd = SMU_FAN;
cmd.len = 2;
cmd.data[0] = 0x31;
cmd.data[1] = fan->reg;
smu_run_cmd(smu, &cmd, 1);
error = smu_run_cmd(smu, &cmd, 1);
if (error)
fan->old_style = 1;
return ((cmd.data[fan->reg*2+1] << 8) | cmd.data[fan->reg*2+2]);
rpm = (cmd.data[0] << 8) | cmd.data[1];
}
if (fan->old_style) {
cmd.cmd = SMU_FAN;
cmd.len = 1;
cmd.data[0] = 1;
error = smu_run_cmd(smu, &cmd, 1);
if (error)
return (error);
rpm = (cmd.data[fan->reg*2+1] << 8) | cmd.data[fan->reg*2+2];
}
return (rpm);
}
static int
@ -685,6 +705,9 @@ smu_fanrpm_sysctl(SYSCTL_HANDLER_ARGS)
fan = &sc->sc_fans[arg2];
rpm = smu_fan_read_rpm(smu, fan);
if (rpm < 0)
return (rpm);
error = sysctl_handle_int(oidp, &rpm, 0, req);
if (error || !req->newptr)