From b9a22962f558bddeea30a5422920e60b0f687c66 Mon Sep 17 00:00:00 2001 From: David Brownell Date: Sat, 23 Feb 2008 15:23:44 -0800 Subject: [PATCH] rtc-cmos: display HPET emulation mode For the "cmos" RTC, have /proc/driver/rtc say whether HPET based IRQ emulation is in effect. Given the problems we've had with this particular hardware maldesign (and the fact that most BIOS code seems not to provide the IRQ routing needed to use the saner HPET modes), this should help troubleshooting. Signed-off-by: David Brownell Cc: Alessandro Zummo Cc: Ingo Molnar Cc: Thomas Gleixner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/rtc-cmos.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c index e059f94c79eb2..f3ee2ad566b4a 100644 --- a/drivers/rtc/rtc-cmos.c +++ b/drivers/rtc/rtc-cmos.c @@ -388,6 +388,7 @@ static int cmos_procfs(struct device *dev, struct seq_file *seq) return seq_printf(seq, "periodic_IRQ\t: %s\n" "update_IRQ\t: %s\n" + "HPET_emulated\t: %s\n" // "square_wave\t: %s\n" // "BCD\t\t: %s\n" "DST_enable\t: %s\n" @@ -395,6 +396,7 @@ static int cmos_procfs(struct device *dev, struct seq_file *seq) "batt_status\t: %s\n", (rtc_control & RTC_PIE) ? "yes" : "no", (rtc_control & RTC_UIE) ? "yes" : "no", + is_hpet_enabled() ? "yes" : "no", // (rtc_control & RTC_SQWE) ? "yes" : "no", // (rtc_control & RTC_DM_BINARY) ? "no" : "yes", (rtc_control & RTC_DST_EN) ? "yes" : "no", -- 2.39.5