Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm

* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm:
  [ARM] 4017/1: [Jornada7xx] - Updating Jornada720.c
  [ARM] 3992/1: i.MX/MX1 CPU Frequency scaling support
  [ARM] Provide a method to alter the control register
  [ARM] 4016/1: prefetch macro is wrong wrt gcc's "delete-null-pointer-checks"
  [ARM] Remove empty fixup function
  [ARM] 4014/1: include drivers/hid/Kconfig
  [ARM] 4013/1: clocksource driver for netx
  [ARM] 4012/1: Clocksource for pxa
  [ARM] Clean up ioremap code
  [ARM] Unuse another Linux PTE bit
  [ARM] Clean up KERNEL_RAM_ADDR
  [ARM] Add sys_*at syscalls
  [ARM] 4004/1: S3C24XX: UDC remove implict addition of VA to regs
  [ARM] Formalise the ARMv6 processor name string
  [ARM] Handle HWCAP_VFP in VFP support code
  [ARM] 4011/1: AT91SAM9260: Fix compilation with NAND driver
  [ARM] 4010/1: AT91SAM9260-EK board: Prepare for MACB Ethernet support

2 files changed, 23 insertions, 27 deletions

diff --git a/arch/arm/mach-pxa/time.c b/arch/arm/mach-pxa/time.c
index b914668..3775b8f 100644
--- a/arch/arm/mach-pxa/time.c
+++ b/arch/arm/mach-pxa/time.c
@@ -18,6 +18,7 @@
 #include <linux/signal.h>
 #include <linux/errno.h>
 #include <linux/sched.h>
+#include <linux/clocksource.h>
 
 #include <asm/system.h>
 #include <asm/hardware.h>
@@ -48,27 +49,6 @@ static int pxa_set_rtc(void)
 	return 0;
 }
 
-/* IRQs are disabled before entering here from do_gettimeofday() */
-static unsigned long pxa_gettimeoffset (void)
-{
-	long ticks_to_match, elapsed, usec;
-
-	/* Get ticks before next timer match */
-	ticks_to_match = OSMR0 - OSCR;
-
-	/* We need elapsed ticks since last match */
-	elapsed = LATCH - ticks_to_match;
-
-	/* don't get fooled by the workaround in pxa_timer_interrupt() */
-	if (elapsed <= 0)
-		return 0;
-
-	/* Now convert them to usec */
-	usec = (unsigned long)(elapsed * (tick_nsec / 1000))/LATCH;
-
-	return usec;
-}
-
 #ifdef CONFIG_NO_IDLE_HZ
 static unsigned long initial_match;
 static int match_posponed;
@@ -121,6 +101,20 @@ static struct irqaction pxa_timer_irq = {
 	.handler	= pxa_timer_interrupt,
 };
 
+cycle_t pxa_get_cycles(void)
+{
+	return OSCR;
+}
+
+static struct clocksource clocksource_pxa = {
+	.name           = "pxa_timer",
+	.rating         = 200,
+	.read           = pxa_get_cycles,
+	.mask           = CLOCKSOURCE_MASK(32),
+	.shift          = 20,
+	.is_continuous  = 1,
+};
+
 static void __init pxa_timer_init(void)
 {
 	struct timespec tv;
@@ -139,6 +133,14 @@ static void __init pxa_timer_init(void)
 	OIER = OIER_E0;		/* enable match on timer 0 to cause interrupts */
 	OSMR0 = OSCR + LATCH;	/* set initial match */
 	local_irq_restore(flags);
+
+	/* on PXA OSCR runs continiously and is not written to, so we can use it
+	 * as clock source directly.
+	 */
+	clocksource_pxa.mult =
+		clocksource_hz2mult(CLOCK_TICK_RATE, clocksource_pxa.shift);
+	clocksource_register(&clocksource_pxa);
+
 }
 
 #ifdef CONFIG_NO_IDLE_HZ
@@ -211,7 +213,6 @@ struct sys_timer pxa_timer = {
 	.init		= pxa_timer_init,
 	.suspend	= pxa_timer_suspend,
 	.resume		= pxa_timer_resume,
-	.offset		= pxa_gettimeoffset,
 #ifdef CONFIG_NO_IDLE_HZ
 	.dyn_tick	= &pxa_dyn_tick,
 #endif
diff --git a/arch/arm/mach-pxa/trizeps4.c b/arch/arm/mach-pxa/trizeps4.c
index c1827d0..119c64b 100644
--- a/arch/arm/mach-pxa/trizeps4.c
+++ b/arch/arm/mach-pxa/trizeps4.c
@@ -393,10 +393,6 @@ static struct pxafb_mach_info sharp_lcd = {
     .pxafb_backlight_power = board_backlight_power,
 };
 
-static void __init trizeps4_fixup(struct machine_desc *desc, struct tag *tags, char **cmdline, struct meminfo *mi)
-{
-}
-
 static void __init trizeps4_init(void)
 {
 	platform_add_devices(trizeps4_devices, ARRAY_SIZE(trizeps4_devices));
@@ -469,7 +465,6 @@ MACHINE_START(TRIZEPS4, "Keith und Koep Trizeps IV module")
 	.phys_io	= 0x40000000,
 	.io_pg_offst	= (io_p2v(0x40000000) >> 18) & 0xfffc,
 	.boot_params	= TRIZEPS4_SDRAM_BASE + 0x100,
-	.fixup		= trizeps4_fixup,
 	.init_machine	= trizeps4_init,
 	.map_io		= trizeps4_map_io,
 	.init_irq	= pxa_init_irq,