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authorBalaji Rao <balajirrao@gmail.com>2008-01-30 13:30:03 +0100
committerIngo Molnar <mingo@elte.hu>2008-01-30 13:30:03 +0100
commite3f37a54f690d3e64995ea7ecea08c5ab3070faf (patch)
tree1d9d62d95b747ef47cdf994357bd9a41d02889a3 /arch/x86
parent45fe4fe19120a22f7339f5bb110447170c25fca9 (diff)
x86: assign IRQs to HPET timers
The userspace API for the HPET (see Documentation/hpet.txt) did not work. The HPET_IE_ON ioctl was failing as there was no IRQ assigned to the timer device. This patch fixes it by allocating IRQs to timer blocks in the HPET. arch/x86/kernel/hpet.c | 13 +++++-------- drivers/char/hpet.c | 45 ++++++++++++++++++++++++++++++++++++++------- include/linux/hpet.h | 2 +- 3 files changed, 44 insertions(+), 16 deletions(-) Signed-off-by: Balaji Rao <balajirrao@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/kernel/hpet.c13
1 files changed, 5 insertions, 8 deletions
diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c
index 9ec2ab79304..786aa227afd 100644
--- a/arch/x86/kernel/hpet.c
+++ b/arch/x86/kernel/hpet.c
@@ -117,8 +117,7 @@ int is_hpet_enabled(void)
static void hpet_reserve_platform_timers(unsigned long id)
{
struct hpet __iomem *hpet = hpet_virt_address;
- struct hpet_timer __iomem *timer = &hpet->hpet_timers[2];
- unsigned int nrtimers, i;
+ unsigned int nrtimers;
struct hpet_data hd;
nrtimers = ((id & HPET_ID_NUMBER) >> HPET_ID_NUMBER_SHIFT) + 1;
@@ -133,16 +132,14 @@ static void hpet_reserve_platform_timers(unsigned long id)
#ifdef CONFIG_HPET_EMULATE_RTC
hpet_reserve_timer(&hd, 1);
#endif
-
hd.hd_irq[0] = HPET_LEGACY_8254;
hd.hd_irq[1] = HPET_LEGACY_RTC;
- for (i = 2; i < nrtimers; timer++, i++)
- hd.hd_irq[i] = (timer->hpet_config & Tn_INT_ROUTE_CNF_MASK) >>
- Tn_INT_ROUTE_CNF_SHIFT;
-
+ /*
+ * IRQs for the other timers are assigned dynamically
+ * in hpet_alloc
+ */
hpet_alloc(&hd);
-
}
#else
static void hpet_reserve_platform_timers(unsigned long id) { }