diff options
| author | Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> | 2019-10-10 13:29:39 -0700 |
|---|---|---|
| committer | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2019-10-15 11:02:29 +0300 |
| commit | 4e26fabfe15ca67125f1b6984671c2e9048d64a5 (patch) | |
| tree | 672e70eb80651eac4d9d3c591a579ececdf83040 /tools/power/x86 | |
| parent | a6a82f9bcd2ad3fab5f20fc406727dc62775db92 (diff) | |
| download | linux-4e26fabfe15ca67125f1b6984671c2e9048d64a5.tar.bz2 | |
tools/power/x86/intel-speed-select: Refuse to disable core-power when getting used
The turbo-freq feature is dependent on the core-power feature. If the
core-power feature is disabled while the turbo-freq feature is enabled,
this will break the turbo-freq feature. This is a firmware limitation,
where they can't return error under this scenario.
So when trying to disable core-power, make sure that the turbo-freq
feature is not enabled. If it enabled, return error if user is trying to
disable the core-power feature.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Diffstat (limited to 'tools/power/x86')
| -rw-r--r-- | tools/power/x86/intel-speed-select/isst-core.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/tools/power/x86/intel-speed-select/isst-core.c b/tools/power/x86/intel-speed-select/isst-core.c index 6dee5332c9d3..67d32f2b9bea 100644 --- a/tools/power/x86/intel-speed-select/isst-core.c +++ b/tools/power/x86/intel-speed-select/isst-core.c @@ -649,6 +649,27 @@ int isst_pm_qos_config(int cpu, int enable_clos, int priority_type) unsigned int req, resp; int ret; + if (!enable_clos) { + struct isst_pkg_ctdp pkg_dev; + struct isst_pkg_ctdp_level_info ctdp_level; + + ret = isst_get_ctdp_levels(cpu, &pkg_dev); + if (ret) { + debug_printf("isst_get_ctdp_levels\n"); + return ret; + } + + ret = isst_get_ctdp_control(cpu, pkg_dev.current_level, + &ctdp_level); + if (ret) + return ret; + + if (ctdp_level.fact_enabled) { + debug_printf("Turbo-freq feature must be disabled first\n"); + return -EINVAL; + } + } + ret = isst_send_mbox_command(cpu, CONFIG_CLOS, CLOS_PM_QOS_CONFIG, 0, 0, &resp); if (ret) |