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-rw-r--r--arch/x86/kernel/hpet.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c
index 8711f1fdef8f..3a8ec363d569 100644
--- a/arch/x86/kernel/hpet.c
+++ b/arch/x86/kernel/hpet.c
@@ -22,9 +22,17 @@ struct hpet_dev {
char name[10];
};
+enum hpet_mode {
+ HPET_MODE_UNUSED,
+ HPET_MODE_LEGACY,
+ HPET_MODE_CLOCKEVT,
+ HPET_MODE_DEVICE,
+};
+
struct hpet_channel {
unsigned int num;
unsigned int irq;
+ enum hpet_mode mode;
unsigned int boot_cfg;
};
@@ -947,6 +955,9 @@ int __init hpet_enable(void)
if (id & HPET_ID_LEGSUP) {
hpet_legacy_clockevent_register();
+ hpet_base.channels[0].mode = HPET_MODE_LEGACY;
+ if (IS_ENABLED(CONFIG_HPET_EMULATE_RTC))
+ hpet_base.channels[1].mode = HPET_MODE_LEGACY;
return 1;
}
return 0;