diff options
Diffstat (limited to 'drivers/thermal/intel/intel_pch_thermal.c')
| -rw-r--r-- | drivers/thermal/intel/intel_pch_thermal.c | 43 |
1 files changed, 28 insertions, 15 deletions
diff --git a/drivers/thermal/intel/intel_pch_thermal.c b/drivers/thermal/intel/intel_pch_thermal.c index 527c91f5960b..c1fa2b29b153 100644 --- a/drivers/thermal/intel/intel_pch_thermal.c +++ b/drivers/thermal/intel/intel_pch_thermal.c @@ -70,8 +70,8 @@ static unsigned int delay_timeout = 100; module_param(delay_timeout, int, 0644); MODULE_PARM_DESC(delay_timeout, "amount of time delay for each iteration."); -/* Number of iterations for cooling delay, 10 counts by default for now */ -static unsigned int delay_cnt = 10; +/* Number of iterations for cooling delay, 600 counts by default for now */ +static unsigned int delay_cnt = 600; module_param(delay_cnt, int, 0644); MODULE_PARM_DESC(delay_cnt, "total number of iterations for time delay."); @@ -193,10 +193,11 @@ static int pch_wpt_get_temp(struct pch_thermal_device *ptd, int *temp) return 0; } +/* Cool the PCH when it's overheat in .suspend_noirq phase */ static int pch_wpt_suspend(struct pch_thermal_device *ptd) { u8 tsel; - u8 pch_delay_cnt = 1; + int pch_delay_cnt = 0; u16 pch_thr_temp, pch_cur_temp; /* Shutdown the thermal sensor if it is not enabled by BIOS */ @@ -232,26 +233,38 @@ static int pch_wpt_suspend(struct pch_thermal_device *ptd) * temperature stays above threshold, notify the warning message * which helps to indentify the reason why S0ix entry was rejected. */ - while (pch_delay_cnt <= delay_cnt) { - if (pch_cur_temp <= pch_thr_temp) + while (pch_delay_cnt < delay_cnt) { + if (pch_cur_temp < pch_thr_temp) break; - dev_warn(&ptd->pdev->dev, + if (pm_wakeup_pending()) { + dev_warn(&ptd->pdev->dev, "Wakeup event detected, abort cooling\n"); + return 0; + } + + pch_delay_cnt++; + dev_dbg(&ptd->pdev->dev, "CPU-PCH current temp [%dC] higher than the threshold temp [%dC], sleep %d times for %d ms duration\n", pch_cur_temp, pch_thr_temp, pch_delay_cnt, delay_timeout); msleep(delay_timeout); /* Read the PCH current temperature for next cycle. */ pch_cur_temp = GET_PCH_TEMP(WPT_TEMP_TSR & readw(ptd->hw_base + WPT_TEMP)); - pch_delay_cnt++; } - if (pch_cur_temp > pch_thr_temp) + if (pch_cur_temp >= pch_thr_temp) dev_warn(&ptd->pdev->dev, - "CPU-PCH is hot [%dC] even after delay, continue to suspend. S0ix might fail\n", - pch_cur_temp); - else - dev_info(&ptd->pdev->dev, - "CPU-PCH is cool [%dC], continue to suspend\n", pch_cur_temp); + "CPU-PCH is hot [%dC] after %d ms delay. S0ix might fail\n", + pch_cur_temp, pch_delay_cnt * delay_timeout); + else { + if (pch_delay_cnt) + dev_info(&ptd->pdev->dev, + "CPU-PCH is cool [%dC] after %d ms delay\n", + pch_cur_temp, pch_delay_cnt * delay_timeout); + else + dev_info(&ptd->pdev->dev, + "CPU-PCH is cool [%dC]\n", + pch_cur_temp); + } return 0; } @@ -455,7 +468,7 @@ static void intel_pch_thermal_remove(struct pci_dev *pdev) pci_disable_device(pdev); } -static int intel_pch_thermal_suspend(struct device *device) +static int intel_pch_thermal_suspend_noirq(struct device *device) { struct pch_thermal_device *ptd = dev_get_drvdata(device); @@ -495,7 +508,7 @@ static const struct pci_device_id intel_pch_thermal_id[] = { MODULE_DEVICE_TABLE(pci, intel_pch_thermal_id); static const struct dev_pm_ops intel_pch_pm_ops = { - .suspend = intel_pch_thermal_suspend, + .suspend_noirq = intel_pch_thermal_suspend_noirq, .resume = intel_pch_thermal_resume, }; |