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commit cffaa41734bcaabc415dca446f43f6b442b2fdab
Author: Carsten Haitzler <[email protected]>
AuthorDate: Sun Jan 25 12:27:36 2026 +0000
e system - cpufreq - set gpu to match cpu power level for amdgpu
adds amdgpu support for power level alongside cpu
---
src/bin/system/e_system_cpufreq.c | 36 ++++++++++++++++++++++++++++++++++++
1 file changed, 36 insertions(+)
diff --git a/src/bin/system/e_system_cpufreq.c b/src/bin/system/e_system_cpufreq.c
index 95e24ef22..431373989 100644
--- a/src/bin/system/e_system_cpufreq.c
+++ b/src/bin/system/e_system_cpufreq.c
@@ -189,6 +189,39 @@ sys_cpu_pwr_energy_set(int v)
return 1;
}
+static int
+sys_gpu_amdgpu_pwr_energy_set(int v)
+{
+ const char *path = "/sys/bus/pci/drivers/amdgpu";
+ const char *lv_str[4] = { "low", "auto", "auto", "high" };
+ const char *s;
+ Eina_Iterator *it;
+ char buf[PATH_MAX];
+ FILE *f;
+ int ret = 0;
+
+ it = eina_file_ls(path);
+ if (!it) return ret;
+ // find dirs with : in name for pciid and look for perf level file
+ EINA_ITERATOR_FOREACH(it, s)
+ {
+ if (!s) continue;
+ if (strchr(s, ':'))
+ {
+ snprintf(buf, sizeof(buf), "%s/power_dpm_force_performance_level", s);
+ f = fopen(buf, "w");
+ if (f)
+ { // found perf level file - write string
+ if (fwrite(lv_str[v], strlen(lv_str[v]), 1, f) == 1) ret = 1;
+ fclose(f);
+ }
+ }
+ eina_stringshare_del(s);
+ }
+ eina_iterator_free(it);
+ return ret;
+}
+
static int
sys_cpu_pwr_pstate_set(int v)
{
@@ -280,6 +313,9 @@ _cb_cpufreq_pwr_set(void *data EINA_UNUSED, const char *params)
if (!sys_cpu_pwr_governor_set(v)) goto err;
}
}
+ // if we have amd gpus - try this
+ sys_gpu_amdgpu_pwr_energy_set(v);
+ // XXX: in future support other gpu drivers?
e_system_inout_command_send("cpufreq-pwr-set", "ok");
return;
err:
--
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