diff options
| author | Bhuvanchandra DV <bhuvanchandra.dv@toradex.com> | 2017-05-10 17:57:52 +0530 |
|---|---|---|
| committer | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2017-06-30 18:10:50 +0200 |
| commit | 01ddee26c837c5b805b5cf2f150ff71d973076a7 (patch) | |
| tree | 354aa47c6f75ac65b1ab9affb0e1beab03c682cc | |
| parent | b045eca7a3d1c0036d901c4764f409b6f5ae3f56 (diff) | |
apalis_t30: add warning message before reaching critical temperature
Print log message before module (local) or SoC (remote) is reaching
critical shutdown temperature nT_CRIT as the LM95245 temperature
sensor's OVERT_N pin is directly connected to PMIC PWRDN.
Signed-off-by: Bhuvanchandra DV <bhuvanchandra.dv@toradex.com>
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
| -rw-r--r-- | arch/arm/mach-tegra/board-apalis_t30.c | 40 |
1 files changed, 36 insertions, 4 deletions
diff --git a/arch/arm/mach-tegra/board-apalis_t30.c b/arch/arm/mach-tegra/board-apalis_t30.c index 037db97bf111..c7237bedb84d 100644 --- a/arch/arm/mach-tegra/board-apalis_t30.c +++ b/arch/arm/mach-tegra/board-apalis_t30.c @@ -1018,6 +1018,11 @@ static void __init apalis_t30_spi_init(void) static void *apalis_t30_alert_data; static void (*apalis_t30_alert_func)(void *); +static int apalis_t30_crit_edge_local; +static int apalis_t30_crit_edge_remote; +static int apalis_t30_crit_hysteresis; +static int apalis_t30_crit_limit_local; +static int apalis_t30_crit_limit_remote; static int apalis_t30_low_edge; static int apalis_t30_low_hysteresis; static int apalis_t30_low_limit; @@ -1127,19 +1132,41 @@ static irqreturn_t thermd_alert_irq(int irq, void *data) /* Gets both entered by THERMD_ALERT GPIO interrupt as well as re-scheduled. */ static void thermd_alert_work_func(struct work_struct *work) { - int temp = 0; + int temp_local = 0; + int temp_remote = 0; - lm95245_get_remote_temp(lm95245_device, &temp); + lm95245_get_local_temp(lm95245_device, &temp_local); + lm95245_get_remote_temp(lm95245_device, &temp_remote); /* This emulates NCT1008 low limit behaviour */ - if (!apalis_t30_low_edge && temp <= apalis_t30_low_limit) { + if (!apalis_t30_low_edge && temp_remote <= apalis_t30_low_limit) { apalis_t30_alert_func(apalis_t30_alert_data); apalis_t30_low_edge = 1; - } else if (apalis_t30_low_edge && temp > apalis_t30_low_limit + + } else if (apalis_t30_low_edge && temp_remote > apalis_t30_low_limit + apalis_t30_low_hysteresis) { apalis_t30_low_edge = 0; } + if (!apalis_t30_crit_edge_local && + temp_local >= apalis_t30_crit_limit_local) { + printk(KERN_ALERT "Module reaching critical shutdown " + "temperature nT_CRIT\n"); + apalis_t30_crit_edge_local = 1; + } else if (apalis_t30_crit_edge_local && temp_local < + apalis_t30_crit_limit_local - apalis_t30_crit_hysteresis) { + apalis_t30_crit_edge_local = 0; + } + + if (!apalis_t30_crit_edge_remote && + temp_remote >= apalis_t30_crit_limit_remote) { + printk(KERN_ALERT "SoC reaching critical shutdown " + "temperature nT_CRIT\n"); + apalis_t30_crit_edge_remote = 1; + } else if (apalis_t30_crit_edge_remote && temp_remote < + apalis_t30_crit_limit_remote - apalis_t30_crit_hysteresis) { + apalis_t30_crit_edge_remote = 0; + } + /* Avoid unbalanced enable for IRQ 367 */ if (thermd_alert_irq_disabled) { apalis_t30_alert_func(apalis_t30_alert_data); @@ -1276,6 +1303,11 @@ static void lm95245_probe_callback(struct device *dev) static void apalis_t30_thermd_alert_init(void) { + apalis_t30_crit_edge_local = 0; + apalis_t30_crit_edge_remote = 0; + apalis_t30_crit_hysteresis = 3000; + apalis_t30_crit_limit_local = 90000; + apalis_t30_crit_limit_remote = 110000; apalis_t30_low_edge = 0; apalis_t30_low_hysteresis = 3000; apalis_t30_low_limit = 0; |