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authorDavid Brownell <david-b@pacbell.net>2008-02-23 15:23:44 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-02-23 17:12:14 -0800
commitc8626a1d7250c593f148530b559c20f6f6af18e8 (patch)
tree332279f151a0cf5c16e1c0229d07c5d6e8ee235f /drivers
parent4185108c77afee83674101319dc071599846a40b (diff)
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 <dbrownell@users.sourceforge.net> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/rtc/rtc-cmos.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c
index e059f94c79eb..f3ee2ad566b4 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",