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authorLinus Torvalds <torvalds@linux-foundation.org>2011-07-22 23:51:56 (GMT)
committerLinus Torvalds <torvalds@linux-foundation.org>2011-07-22 23:51:56 (GMT)
commita99a7d1436f9375662f35ccac8f1a1e1b0302a11 (patch)
tree0b3f411f6b1c4256063cf1d53773110f5a5f7482 /arch/mips
parentbdc7ccfc0631797636837b10df7f87bc1e2e4ae3 (diff)
parentded7c1ee9799fe0ca725b459f151402e3ca4d12b (diff)
downloadlinux-a99a7d1436f9375662f35ccac8f1a1e1b0302a11.tar.xz
Merge branch 'timers-cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'timers-cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: mips: Fix i8253 clockevent fallout i8253: Cleanup outb/inb magic arm: Footbridge: Use common i8253 clockevent mips: Use common i8253 clockevent x86: Use common i8253 clockevent i8253: Create common clockevent implementation i8253: Export i8253_lock unconditionally pcpskr: MIPS: Make config dependencies finer grained pcspkr: Cleanup Kconfig dependencies i8253: Move remaining content and delete asm/i8253.h i8253: Consolidate definitions of PIT_LATCH x86: i8253: Consolidate definitions of global_clock_event i8253: Alpha, PowerPC: Remove unused asm/8253pit.h alpha: i8253: Cleanup remaining users of i8253pit.h i8253: Remove I8253_LOCK config i8253: Make pcsp sound driver use the shared i8253_lock i8253: Make pcspkr input driver use the shared i8253_lock i8253: Consolidate all kernel definitions of i8253_lock i8253: Unify all kernel declarations of i8253_lock i8253: Create linux/i8253.h and use it in all 8253 related files
Diffstat (limited to 'arch/mips')
-rw-r--r--arch/mips/Kconfig4
-rw-r--r--arch/mips/cobalt/time.c2
-rw-r--r--arch/mips/include/asm/i8253.h24
-rw-r--r--arch/mips/jazz/irq.c2
-rw-r--r--arch/mips/kernel/i8253.c102
-rw-r--r--arch/mips/mti-malta/malta-time.c2
-rw-r--r--arch/mips/sgi-ip22/ip22-time.c2
-rw-r--r--arch/mips/sni/time.c2
8 files changed, 12 insertions, 128 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 653da62..6cb60ad 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -185,6 +185,7 @@ config MACH_JAZZ
select CSRC_R4K
select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
select GENERIC_ISA_DMA
+ select HAVE_PCSPKR_PLATFORM
select IRQ_CPU
select I8253
select I8259
@@ -266,6 +267,7 @@ config MIPS_MALTA
select CSRC_R4K
select DMA_NONCOHERENT
select GENERIC_ISA_DMA
+ select HAVE_PCSPKR_PLATFORM
select IRQ_CPU
select IRQ_GIC
select HW_HAS_PCI
@@ -640,6 +642,7 @@ config SNI_RM
select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
select DMA_NONCOHERENT
select GENERIC_ISA_DMA
+ select HAVE_PCSPKR_PLATFORM
select HW_HAS_EISA
select HW_HAS_PCI
select IRQ_CPU
@@ -2388,6 +2391,7 @@ config MMU
config I8253
bool
select CLKSRC_I8253
+ select CLKEVT_I8253
select MIPS_EXTERNAL_TIMER
config ZONE_DMA32
diff --git a/arch/mips/cobalt/time.c b/arch/mips/cobalt/time.c
index 0162f9e..3bff3b8 100644
--- a/arch/mips/cobalt/time.c
+++ b/arch/mips/cobalt/time.c
@@ -17,10 +17,10 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+#include <linux/i8253.h>
#include <linux/init.h>
#include <asm/gt64120.h>
-#include <asm/i8253.h>
#include <asm/time.h>
#define GT641XX_BASE_CLOCK 50000000 /* 50MHz */
diff --git a/arch/mips/include/asm/i8253.h b/arch/mips/include/asm/i8253.h
deleted file mode 100644
index 9ad0113..0000000
--- a/arch/mips/include/asm/i8253.h
+++ /dev/null
@@ -1,24 +0,0 @@
-/*
- * Machine specific IO port address definition for generic.
- * Written by Osamu Tomita <tomita@cinet.co.jp>
- */
-#ifndef __ASM_I8253_H
-#define __ASM_I8253_H
-
-#include <linux/spinlock.h>
-
-/* i8253A PIT registers */
-#define PIT_MODE 0x43
-#define PIT_CH0 0x40
-#define PIT_CH2 0x42
-
-#define PIT_LATCH LATCH
-
-extern raw_spinlock_t i8253_lock;
-
-extern void setup_pit_timer(void);
-
-#define inb_pit inb_p
-#define outb_pit outb_p
-
-#endif /* __ASM_I8253_H */
diff --git a/arch/mips/jazz/irq.c b/arch/mips/jazz/irq.c
index 260df47..ca9bd20 100644
--- a/arch/mips/jazz/irq.c
+++ b/arch/mips/jazz/irq.c
@@ -7,6 +7,7 @@
* Copyright (C) 1994 - 2001, 2003, 07 Ralf Baechle
*/
#include <linux/clockchips.h>
+#include <linux/i8253.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
@@ -15,7 +16,6 @@
#include <linux/irq.h>
#include <asm/irq_cpu.h>
-#include <asm/i8253.h>
#include <asm/i8259.h>
#include <asm/io.h>
#include <asm/jazz.h>
diff --git a/arch/mips/kernel/i8253.c b/arch/mips/kernel/i8253.c
index 391221b..be4ee7d 100644
--- a/arch/mips/kernel/i8253.c
+++ b/arch/mips/kernel/i8253.c
@@ -3,96 +3,16 @@
*
*/
#include <linux/clockchips.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/jiffies.h>
+#include <linux/i8253.h>
#include <linux/module.h>
#include <linux/smp.h>
-#include <linux/spinlock.h>
#include <linux/irq.h>
-#include <asm/delay.h>
-#include <asm/i8253.h>
-#include <asm/io.h>
#include <asm/time.h>
-DEFINE_RAW_SPINLOCK(i8253_lock);
-EXPORT_SYMBOL(i8253_lock);
-
-/*
- * Initialize the PIT timer.
- *
- * This is also called after resume to bring the PIT into operation again.
- */
-static void init_pit_timer(enum clock_event_mode mode,
- struct clock_event_device *evt)
-{
- raw_spin_lock(&i8253_lock);
-
- switch(mode) {
- case CLOCK_EVT_MODE_PERIODIC:
- /* binary, mode 2, LSB/MSB, ch 0 */
- outb_p(0x34, PIT_MODE);
- outb_p(LATCH & 0xff , PIT_CH0); /* LSB */
- outb(LATCH >> 8 , PIT_CH0); /* MSB */
- break;
-
- case CLOCK_EVT_MODE_SHUTDOWN:
- case CLOCK_EVT_MODE_UNUSED:
- if (evt->mode == CLOCK_EVT_MODE_PERIODIC ||
- evt->mode == CLOCK_EVT_MODE_ONESHOT) {
- outb_p(0x30, PIT_MODE);
- outb_p(0, PIT_CH0);
- outb_p(0, PIT_CH0);
- }
- break;
-
- case CLOCK_EVT_MODE_ONESHOT:
- /* One shot setup */
- outb_p(0x38, PIT_MODE);
- break;
-
- case CLOCK_EVT_MODE_RESUME:
- /* Nothing to do here */
- break;
- }
- raw_spin_unlock(&i8253_lock);
-}
-
-/*
- * Program the next event in oneshot mode
- *
- * Delta is given in PIT ticks
- */
-static int pit_next_event(unsigned long delta, struct clock_event_device *evt)
-{
- raw_spin_lock(&i8253_lock);
- outb_p(delta & 0xff , PIT_CH0); /* LSB */
- outb(delta >> 8 , PIT_CH0); /* MSB */
- raw_spin_unlock(&i8253_lock);
-
- return 0;
-}
-
-/*
- * On UP the PIT can serve all of the possible timer functions. On SMP systems
- * it can be solely used for the global tick.
- *
- * The profiling and update capabilites are switched off once the local apic is
- * registered. This mechanism replaces the previous #ifdef LOCAL_APIC -
- * !using_apic_timer decisions in do_timer_interrupt_hook()
- */
-static struct clock_event_device pit_clockevent = {
- .name = "pit",
- .features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
- .set_mode = init_pit_timer,
- .set_next_event = pit_next_event,
- .irq = 0,
-};
-
static irqreturn_t timer_interrupt(int irq, void *dev_id)
{
- pit_clockevent.event_handler(&pit_clockevent);
+ i8253_clockevent.event_handler(&i8253_clockevent);
return IRQ_HANDLED;
}
@@ -103,25 +23,9 @@ static struct irqaction irq0 = {
.name = "timer"
};
-/*
- * Initialize the conversion factor and the min/max deltas of the clock event
- * structure and register the clock event source with the framework.
- */
void __init setup_pit_timer(void)
{
- struct clock_event_device *cd = &pit_clockevent;
- unsigned int cpu = smp_processor_id();
-
- /*
- * Start pit with the boot cpu mask and make it global after the
- * IO_APIC has been initialized.
- */
- cd->cpumask = cpumask_of(cpu);
- clockevent_set_clock(cd, CLOCK_TICK_RATE);
- cd->max_delta_ns = clockevent_delta2ns(0x7FFF, cd);
- cd->min_delta_ns = clockevent_delta2ns(0xF, cd);
- clockevents_register_device(cd);
-
+ clockevent_i8253_init(true);
setup_irq(0, &irq0);
}
diff --git a/arch/mips/mti-malta/malta-time.c b/arch/mips/mti-malta/malta-time.c
index 1620b83..f8ee945 100644
--- a/arch/mips/mti-malta/malta-time.c
+++ b/arch/mips/mti-malta/malta-time.c
@@ -19,6 +19,7 @@
*/
#include <linux/types.h>
+#include <linux/i8253.h>
#include <linux/init.h>
#include <linux/kernel_stat.h>
#include <linux/sched.h>
@@ -31,7 +32,6 @@
#include <asm/mipsregs.h>
#include <asm/mipsmtregs.h>
#include <asm/hardirq.h>
-#include <asm/i8253.h>
#include <asm/irq.h>
#include <asm/div64.h>
#include <asm/cpu.h>
diff --git a/arch/mips/sgi-ip22/ip22-time.c b/arch/mips/sgi-ip22/ip22-time.c
index 1a94c98..6071924 100644
--- a/arch/mips/sgi-ip22/ip22-time.c
+++ b/arch/mips/sgi-ip22/ip22-time.c
@@ -10,6 +10,7 @@
* Copyright (C) 2003, 06 Ralf Baechle (ralf@linux-mips.org)
*/
#include <linux/bcd.h>
+#include <linux/i8253.h>
#include <linux/init.h>
#include <linux/irq.h>
#include <linux/kernel.h>
@@ -20,7 +21,6 @@
#include <asm/cpu.h>
#include <asm/mipsregs.h>
-#include <asm/i8253.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/time.h>
diff --git a/arch/mips/sni/time.c b/arch/mips/sni/time.c
index 0904d4d..ec0be14 100644
--- a/arch/mips/sni/time.c
+++ b/arch/mips/sni/time.c
@@ -1,11 +1,11 @@
#include <linux/types.h>
+#include <linux/i8253.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/smp.h>
#include <linux/time.h>
#include <linux/clockchips.h>
-#include <asm/i8253.h>
#include <asm/sni.h>
#include <asm/time.h>
#include <asm-generic/rtc.h>