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| author | Balaji Rao <balajirrao@gmail.com> | 2008-01-30 13:30:03 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-01-30 13:30:03 +0100 |
| commit | e3f37a54f690d3e64995ea7ecea08c5ab3070faf (patch) | |
| tree | 1d9d62d95b747ef47cdf994357bd9a41d02889a3 /arch/x86/kernel/hpet.c | |
| parent | 45fe4fe19120a22f7339f5bb110447170c25fca9 (diff) | |
| download | linux-e3f37a54f690d3e64995ea7ecea08c5ab3070faf.tar.gz linux-e3f37a54f690d3e64995ea7ecea08c5ab3070faf.tar.bz2 linux-e3f37a54f690d3e64995ea7ecea08c5ab3070faf.zip | |
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/kernel/hpet.c')
| -rw-r--r-- | arch/x86/kernel/hpet.c | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c index 9ec2ab793042..786aa227afdf 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) { } |