/*
* Polling various devices on board for details and status monitoring purposes
*/
void board_poll_devices(void)
{
#if defined CONFIG_EXYNOS_TMU
int temp;
switch (tmu_monitor(&temp)) {
case TMU_STATUS_TRIPPED:
puts("EXYNOS_TMU: TRIPPING! Device power going down ...\n");
power_shutdown();
break;
case TMU_STATUS_WARNING:
puts("EXYNOS_TMU: WARNING! Temperature very high\n");
break;
case TMU_STATUS_INIT:
case TMU_STATUS_NORMAL:
break;
default:
debug("Unknown TMU state\n");
}
#endif /* CONFIG_EXYNOS_TMU */
#ifdef CONFIG_EXYNOS_CPUFREQ
cpufreq_loop_count++;
if (cpufreq_loop_count == 10000000) {
/* User is idle, decrease ARM frequency*/
exynos5250_set_frequency(CPU_FREQ_L200);
}
#endif /* CONFIG_EXYNOS_CPUFREQ */
}
/* Boot Time Thermal Analysis for SoC temperature threshold breach */
static void boot_temp_check(void)
{
int temp;
switch (tmu_monitor(&temp)) {
case TMU_STATUS_NORMAL:
break;
case TMU_STATUS_TRIPPED:
/*
* Status TRIPPED ans WARNING means corresponding threshold
* breach
*/
puts("EXYNOS_TMU: TRIPPING! Device power going down ...\n");
set_ps_hold_ctrl();
hang();
break;
case TMU_STATUS_WARNING:
puts("EXYNOS_TMU: WARNING! Temperature very high\n");
break;
case TMU_STATUS_INIT:
/*
* TMU_STATUS_INIT means something is wrong with temperature
* sensing and TMU status was changed back from NORMAL to INIT.
*/
puts("EXYNOS_TMU: WARNING! Temperature sensing not done\n");
break;
default:
debug("EXYNOS_TMU: Unknown TMU state\n");
}
}
int dtt_tmu(void)
{
#if defined CONFIG_TMU_CMD_DTT
int cur_temp;
/* Sense and return latest thermal info */
if (tmu_monitor(&cur_temp) == TMU_STATUS_INIT) {
puts("TMU is in unknown state, temperature is invalid\n");
return -1;
}
printf("Current temperature: %u degrees Celsius\n", cur_temp);
#endif
return 0;
}
int do_tmu(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
int cur_temp;
if (argc < 2)
return CMD_RET_USAGE;
if (strcmp(argv[1], "curtemp") == 0) {
if (tmu_monitor(&cur_temp) == -1)
printf("tmu is in unknow state, temp is invalid\n");
else
printf("Current Temp: %u degrees Celsius\n", cur_temp);
} else {
return CMD_RET_USAGE;
}
return 0;
}
