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MLK-16300 thermal: imx: avoid error message of get_temp when thermal zone is off 

For i.MX system controller thermal, when some of the thermal
zones are powered off, the get temp will fail, and thermal driver
will return CPU thermal zone's temp instead. But current driver
will return A53 cluster for all cases, and A53 cluster may be
also off when booting up A72 cluster only, so below error message
will come out:

[  475.606431] read temp sensor:0 failed
[  475.610107] thermal thermal_zone0: failed to read out thermal zone (-22)

To avoid this error, for the case of thermal zones power off,
thermal driver can return current thread's CPU cluster temperature.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Reviewed-by: Bai Ping <ping.bai@nxp.com>
pull/10/head
Anson Huang 2017-08-30 10:42:07 +08:00 committed by Jason Liu
parent 5528107317
commit ff29eef539
1 changed files with 4 additions and 3 deletions
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7
drivers/thermal/imx_sc_thermal.c
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@ -58,11 +58,12 @@ static int imx_sc_tsens_get_temp(void *data, int *temp)
SC_C_TEMP, &celsius, &tenths);
/*
* if the SS power domain is down, read temp will fail, so
* we can return the temp of A53 CPU domain instead.
* we can return the temp of CPU domain instead.
*/
if (sciErr != SC_ERR_NONE) {
sciErr = sc_misc_get_temp(tsens_ipcHandle, sensor_hw_id[0],
SC_C_TEMP, &celsius, &tenths);
sciErr = sc_misc_get_temp(tsens_ipcHandle,
sensor_hw_id[topology_physical_package_id(smp_processor_id())],
SC_C_TEMP, &celsius, &tenths);
if (sciErr != SC_ERR_NONE) {
pr_err("read temp sensor:%d failed\n", sensor->hw_id);
return -EINVAL;