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| author | Gerrit <chrome-bot@google.com> | 2012-04-26 10:16:24 -0700 |
|---|---|---|
| committer | Gerrit Code Review <gerrit@gerrit.golo.chromium.org> | 2012-04-26 10:16:24 -0700 |
| commit | 9a59d98b3d1d72604b7c5ac916b494716bd83082 (patch) | |
| tree | 0dd24943a9777b7ebb1f7c2b1291a008f3a3922c /chip/lm4 | |
| parent | b4f69c406d0698c9e03d6a76b380bd49ba286455 (diff) | |
| parent | 7710ed563ab755073609912d5cc227d2e9eb589f (diff) | |
| download | chrome-ec-9a59d98b3d1d72604b7c5ac916b494716bd83082.tar.gz | |
Merge "Issue warning on fan stall."
Diffstat (limited to 'chip/lm4')
| -rw-r--r-- | chip/lm4/pwm.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/chip/lm4/pwm.c b/chip/lm4/pwm.c index e947e0a55f..d5082b54e9 100644 --- a/chip/lm4/pwm.c +++ b/chip/lm4/pwm.c @@ -130,9 +130,25 @@ static void update_lpc_mapped_memory(void) } +static void check_fan_failure(void) +{ + if ((LM4_FAN_FANCTL & (1 << FAN_CH_CPU)) && + ((LM4_FAN_FANSTS >> (2 * FAN_CH_CPU)) & 0x03) == 0) { + /* Fan enabled but stalled. Issues warning. + * As we have thermal shutdown protection, issuing warning + * here should be enough. + */ + lpc_set_host_events( + EC_LPC_HOST_EVENT_MASK(EC_LPC_HOST_EVENT_THERMAL)); + cputs(CC_PWM, "[Fan stalled!]\n"); + } +} + + void pwm_task(void) { while (1) { + check_fan_failure(); update_lpc_mapped_memory(); usleep(1000000); } |