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thermal/intel/intel_soc_dts_iosf: Use Intel TCC library 

Cleanup the code by using Intel TCC library for TCC (Thermal Control
Circuitry) MSR access.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Zhang Rui 2022-12-19 23:46:17 +08:00 committed by Rafael J. Wysocki
parent d91a4714e5
commit 955fb8719e
2 changed files with 6 additions and 28 deletions
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1
drivers/thermal/intel/Kconfig
View File

@ -32,6 +32,7 @@ config INTEL_SOC_DTS_IOSF_CORE
tristate
depends on X86 && PCI
select IOSF_MBI
select INTEL_TCC
help
This is becoming a common feature for Intel SoCs to expose the additional
digital temperature sensors (DTSs) using side band interface (IOSF). This

33
drivers/thermal/intel/intel_soc_dts_iosf.c
View File

@ -7,6 +7,7 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/bitops.h>
#include <linux/intel_tcc.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
@ -45,32 +46,6 @@
/* DTS0 and DTS 1 */
#define SOC_MAX_DTS_SENSORS 2
static int get_tj_max(u32 *tj_max)
{
u32 eax, edx;
u32 val;
int err;
err = rdmsr_safe(MSR_IA32_TEMPERATURE_TARGET, &eax, &edx);
if (err)
goto err_ret;
else {
val = (eax >> 16) & 0xff;
if (val)
*tj_max = val * 1000;
else {
err = -EINVAL;
goto err_ret;
}
}
return 0;
err_ret:
*tj_max = 0;
return err;
}
static int sys_get_trip_temp(struct thermal_zone_device *tzd, int trip,
int *temp)
{
@ -415,8 +390,9 @@ struct intel_soc_dts_sensors *intel_soc_dts_iosf_init(
if (!trip_count || read_only_trip_count > trip_count)
return ERR_PTR(-EINVAL);
if (get_tj_max(&tj_max))
return ERR_PTR(-EINVAL);
tj_max = intel_tcc_get_tjmax(-1);
if (tj_max < 0)
return ERR_PTR(tj_max);
sensors = kzalloc(sizeof(*sensors), GFP_KERNEL);
if (!sensors)
@ -475,4 +451,5 @@ void intel_soc_dts_iosf_exit(struct intel_soc_dts_sensors *sensors)
}
EXPORT_SYMBOL_GPL(intel_soc_dts_iosf_exit);
MODULE_IMPORT_NS(INTEL_TCC);
MODULE_LICENSE("GPL v2");