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-rw-r--r--arch/arm/mach-pxa/Kconfig8
-rw-r--r--arch/arm/mach-pxa/generic.c60
-rw-r--r--arch/arm/mach-pxa/irq.c10
-rw-r--r--arch/arm/mach-pxa/lpd270.c4
-rw-r--r--arch/arm/mach-pxa/lubbock.c4
-rw-r--r--arch/arm/mach-pxa/mainstone.c4
-rw-r--r--arch/arm/mach-pxa/pm.c3
-rw-r--r--arch/arm/mach-pxa/time.c7
8 files changed, 77 insertions, 23 deletions
diff --git a/arch/arm/mach-pxa/Kconfig b/arch/arm/mach-pxa/Kconfig
index 03d07cae26c..9e3d0bdcba0 100644
--- a/arch/arm/mach-pxa/Kconfig
+++ b/arch/arm/mach-pxa/Kconfig
@@ -13,12 +13,10 @@ config ARCH_LUBBOCK
config MACH_LOGICPD_PXA270
bool "LogicPD PXA270 Card Engine Development Platform"
select PXA27x
- select IWMMXT
config MACH_MAINSTONE
bool "Intel HCDDBBVA0 Development Platform"
select PXA27x
- select IWMMXT
config ARCH_PXA_IDP
bool "Accelent Xscale IDP"
@@ -53,7 +51,6 @@ config PXA_SHARPSL_25x
config PXA_SHARPSL_27x
bool "Sharp PXA270 models (SL-Cxx00)"
select PXA27x
- select IWMMXT
endchoice
@@ -129,11 +126,6 @@ config PXA27x
help
Select code specific to PXA27x variants
-config IWMMXT
- bool
- help
- Enable support for iWMMXt
-
config PXA_SHARP_C7xx
bool
select PXA_SSP
diff --git a/arch/arm/mach-pxa/generic.c b/arch/arm/mach-pxa/generic.c
index 45fb2c3bcf8..6ae605857ca 100644
--- a/arch/arm/mach-pxa/generic.c
+++ b/arch/arm/mach-pxa/generic.c
@@ -25,6 +25,10 @@
#include <linux/pm.h>
#include <linux/string.h>
+#include <linux/sched.h>
+#include <asm/cnt32_to_63.h>
+#include <asm/div64.h>
+
#include <asm/hardware.h>
#include <asm/irq.h>
#include <asm/system.h>
@@ -41,6 +45,62 @@
#include "generic.h"
/*
+ * This is the PXA2xx sched_clock implementation. This has a resolution
+ * of at least 308ns and a maximum value that depends on the value of
+ * CLOCK_TICK_RATE.
+ *
+ * The return value is guaranteed to be monotonic in that range as
+ * long as there is always less than 582 seconds between successive
+ * calls to this function.
+ */
+unsigned long long sched_clock(void)
+{
+ unsigned long long v = cnt32_to_63(OSCR);
+ /* Note: top bit ov v needs cleared unless multiplier is even. */
+
+#if CLOCK_TICK_RATE == 3686400
+ /* 1E9 / 3686400 => 78125 / 288, max value = 32025597s (370 days). */
+ /* The <<1 is used to get rid of tick.hi top bit */
+ v *= 78125<<1;
+ do_div(v, 288<<1);
+#elif CLOCK_TICK_RATE == 3250000
+ /* 1E9 / 3250000 => 4000 / 13, max value = 709490156s (8211 days) */
+ v *= 4000;
+ do_div(v, 13);
+#elif CLOCK_TICK_RATE == 3249600
+ /* 1E9 / 3249600 => 625000 / 2031, max value = 4541295s (52 days) */
+ v *= 625000;
+ do_div(v, 2031);
+#else
+#warning "consider fixing sched_clock for your value of CLOCK_TICK_RATE"
+ /*
+ * 96-bit math to perform tick * NSEC_PER_SEC / CLOCK_TICK_RATE for
+ * any value of CLOCK_TICK_RATE. Max value is in the 80 thousand
+ * years range which is nice, but with higher computation cost.
+ */
+ {
+ union {
+ unsigned long long val;
+ struct { unsigned long lo, hi; };
+ } x;
+ unsigned long long y;
+
+ x.val = v;
+ x.hi &= 0x7fffffff;
+ y = (unsigned long long)x.lo * NSEC_PER_SEC;
+ x.lo = y;
+ y = (y >> 32) + (unsigned long long)x.hi * NSEC_PER_SEC;
+ x.hi = do_div(y, CLOCK_TICK_RATE);
+ do_div(x.val, CLOCK_TICK_RATE);
+ x.hi += y;
+ v = x.val;
+ }
+#endif
+
+ return v;
+}
+
+/*
* Handy function to set GPIO alternate functions
*/
diff --git a/arch/arm/mach-pxa/irq.c b/arch/arm/mach-pxa/irq.c
index ab1a16025d5..f815678a9d6 100644
--- a/arch/arm/mach-pxa/irq.c
+++ b/arch/arm/mach-pxa/irq.c
@@ -143,7 +143,7 @@ static struct irq_chip pxa_low_gpio_chip = {
* Demux handler for GPIO>=2 edge detect interrupts
*/
-static void pxa_gpio_demux_handler(unsigned int irq, struct irqdesc *desc)
+static void pxa_gpio_demux_handler(unsigned int irq, struct irq_desc *desc)
{
unsigned int mask;
int loop;
@@ -286,27 +286,27 @@ void __init pxa_init_irq(void)
for (irq = PXA_IRQ(PXA_IRQ_SKIP); irq <= PXA_IRQ(31); irq++) {
set_irq_chip(irq, &pxa_internal_chip_low);
- set_irq_handler(irq, do_level_IRQ);
+ set_irq_handler(irq, handle_level_irq);
set_irq_flags(irq, IRQF_VALID);
}
#if PXA_INTERNAL_IRQS > 32
for (irq = PXA_IRQ(32); irq < PXA_IRQ(PXA_INTERNAL_IRQS); irq++) {
set_irq_chip(irq, &pxa_internal_chip_high);
- set_irq_handler(irq, do_level_IRQ);
+ set_irq_handler(irq, handle_level_irq);
set_irq_flags(irq, IRQF_VALID);
}
#endif
for (irq = IRQ_GPIO0; irq <= IRQ_GPIO1; irq++) {
set_irq_chip(irq, &pxa_low_gpio_chip);
- set_irq_handler(irq, do_edge_IRQ);
+ set_irq_handler(irq, handle_edge_irq);
set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
}
for (irq = IRQ_GPIO(2); irq <= IRQ_GPIO(PXA_LAST_GPIO); irq++) {
set_irq_chip(irq, &pxa_muxed_gpio_chip);
- set_irq_handler(irq, do_edge_IRQ);
+ set_irq_handler(irq, handle_edge_irq);
set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
}
diff --git a/arch/arm/mach-pxa/lpd270.c b/arch/arm/mach-pxa/lpd270.c
index 5749f6b72e1..8e27a64fa9f 100644
--- a/arch/arm/mach-pxa/lpd270.c
+++ b/arch/arm/mach-pxa/lpd270.c
@@ -75,7 +75,7 @@ static struct irq_chip lpd270_irq_chip = {
.unmask = lpd270_unmask_irq,
};
-static void lpd270_irq_handler(unsigned int irq, struct irqdesc *desc)
+static void lpd270_irq_handler(unsigned int irq, struct irq_desc *desc)
{
unsigned long pending;
@@ -105,7 +105,7 @@ static void __init lpd270_init_irq(void)
/* setup extra LogicPD PXA270 irqs */
for (irq = LPD270_IRQ(2); irq <= LPD270_IRQ(4); irq++) {
set_irq_chip(irq, &lpd270_irq_chip);
- set_irq_handler(irq, do_level_IRQ);
+ set_irq_handler(irq, handle_level_irq);
set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
}
set_irq_chained_handler(IRQ_GPIO(0), lpd270_irq_handler);
diff --git a/arch/arm/mach-pxa/lubbock.c b/arch/arm/mach-pxa/lubbock.c
index 142c33c3dff..055de7f4f00 100644
--- a/arch/arm/mach-pxa/lubbock.c
+++ b/arch/arm/mach-pxa/lubbock.c
@@ -85,7 +85,7 @@ static struct irq_chip lubbock_irq_chip = {
.unmask = lubbock_unmask_irq,
};
-static void lubbock_irq_handler(unsigned int irq, struct irqdesc *desc)
+static void lubbock_irq_handler(unsigned int irq, struct irq_desc *desc)
{
unsigned long pending = LUB_IRQ_SET_CLR & lubbock_irq_enabled;
do {
@@ -108,7 +108,7 @@ static void __init lubbock_init_irq(void)
/* setup extra lubbock irqs */
for (irq = LUBBOCK_IRQ(0); irq <= LUBBOCK_LAST_IRQ; irq++) {
set_irq_chip(irq, &lubbock_irq_chip);
- set_irq_handler(irq, do_level_IRQ);
+ set_irq_handler(irq, handle_level_irq);
set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
}
diff --git a/arch/arm/mach-pxa/mainstone.c b/arch/arm/mach-pxa/mainstone.c
index 49c34d94a9f..56d94d88d5c 100644
--- a/arch/arm/mach-pxa/mainstone.c
+++ b/arch/arm/mach-pxa/mainstone.c
@@ -71,7 +71,7 @@ static struct irq_chip mainstone_irq_chip = {
.unmask = mainstone_unmask_irq,
};
-static void mainstone_irq_handler(unsigned int irq, struct irqdesc *desc)
+static void mainstone_irq_handler(unsigned int irq, struct irq_desc *desc)
{
unsigned long pending = MST_INTSETCLR & mainstone_irq_enabled;
do {
@@ -94,7 +94,7 @@ static void __init mainstone_init_irq(void)
/* setup extra Mainstone irqs */
for(irq = MAINSTONE_IRQ(0); irq <= MAINSTONE_IRQ(15); irq++) {
set_irq_chip(irq, &mainstone_irq_chip);
- set_irq_handler(irq, do_level_IRQ);
+ set_irq_handler(irq, handle_level_irq);
if (irq == MAINSTONE_IRQ(10) || irq == MAINSTONE_IRQ(14))
set_irq_flags(irq, IRQF_VALID | IRQF_PROBE | IRQF_NOAUTOEN);
else
diff --git a/arch/arm/mach-pxa/pm.c b/arch/arm/mach-pxa/pm.c
index 2112c414f0e..b4d8276d605 100644
--- a/arch/arm/mach-pxa/pm.c
+++ b/arch/arm/mach-pxa/pm.c
@@ -83,7 +83,8 @@ int pxa_pm_enter(suspend_state_t state)
#ifdef CONFIG_IWMMXT
/* force any iWMMXt context to ram **/
- iwmmxt_task_disable(NULL);
+ if (elf_hwcap & HWCAP_IWMMXT)
+ iwmmxt_task_disable(NULL);
#endif
/* preserve current time */
diff --git a/arch/arm/mach-pxa/time.c b/arch/arm/mach-pxa/time.c
index 3ac268fa419..b9146686102 100644
--- a/arch/arm/mach-pxa/time.c
+++ b/arch/arm/mach-pxa/time.c
@@ -124,6 +124,7 @@ static struct irqaction pxa_timer_irq = {
static void __init pxa_timer_init(void)
{
struct timespec tv;
+ unsigned long flags;
set_rtc = pxa_set_rtc;
@@ -132,12 +133,12 @@ static void __init pxa_timer_init(void)
do_settimeofday(&tv);
OIER = 0; /* disable any timer interrupts */
- OSCR = LATCH*2; /* push OSCR out of the way */
- OSMR0 = LATCH; /* set initial match */
OSSR = 0xf; /* clear status on all timers */
setup_irq(IRQ_OST0, &pxa_timer_irq);
+ local_irq_save(flags);
OIER = OIER_E0; /* enable match on timer 0 to cause interrupts */
- OSCR = 0; /* initialize free-running timer */
+ OSMR0 = OSCR + LATCH; /* set initial match */
+ local_irq_restore(flags);
}
#ifdef CONFIG_NO_IDLE_HZ
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-12 06:29:23 +0000