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-rw-r--r--arch/arm/mach-footbridge/common.c5
-rw-r--r--arch/arm/mach-footbridge/common.h2
-rw-r--r--arch/arm/mach-footbridge/dc21285-timer.c44
-rw-r--r--arch/arm/mach-footbridge/ebsa285.c18
-rw-r--r--arch/arm/mach-footbridge/include/mach/hardware.h6
5 files changed, 58 insertions, 17 deletions
diff --git a/arch/arm/mach-footbridge/common.c b/arch/arm/mach-footbridge/common.c
index e0091685fd48..9e8220e38398 100644
--- a/arch/arm/mach-footbridge/common.c
+++ b/arch/arm/mach-footbridge/common.c
@@ -143,11 +143,6 @@ static struct map_desc fb_common_io_desc[] __initdata = {
.pfn = __phys_to_pfn(DC21285_ARMCSR_BASE),
.length = ARMCSR_SIZE,
.type = MT_DEVICE,
- }, {
- .virtual = XBUS_BASE,
- .pfn = __phys_to_pfn(0x40000000),
- .length = XBUS_SIZE,
- .type = MT_DEVICE,
}
};
diff --git a/arch/arm/mach-footbridge/common.h b/arch/arm/mach-footbridge/common.h
index 56607b3a773e..b911e5587ecf 100644
--- a/arch/arm/mach-footbridge/common.h
+++ b/arch/arm/mach-footbridge/common.h
@@ -10,3 +10,5 @@ extern void footbridge_init_irq(void);
extern void isa_init_irq(unsigned int irq);
extern void footbridge_restart(enum reboot_mode, const char *);
+
+extern void footbridge_sched_clock(void);
diff --git a/arch/arm/mach-footbridge/dc21285-timer.c b/arch/arm/mach-footbridge/dc21285-timer.c
index 9ee78f7b4990..3971104d32d4 100644
--- a/arch/arm/mach-footbridge/dc21285-timer.c
+++ b/arch/arm/mach-footbridge/dc21285-timer.c
@@ -9,6 +9,7 @@
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
+#include <linux/sched_clock.h>
#include <asm/irq.h>
@@ -46,6 +47,16 @@ static struct clocksource cksrc_dc21285 = {
.flags = CLOCK_SOURCE_IS_CONTINUOUS,
};
+static int ckevt_dc21285_set_next_event(unsigned long delta,
+ struct clock_event_device *c)
+{
+ *CSR_TIMER1_CLR = 0;
+ *CSR_TIMER1_LOAD = delta;
+ *CSR_TIMER1_CNTL = TIMER_CNTL_ENABLE | TIMER_CNTL_DIV16;
+
+ return 0;
+}
+
static void ckevt_dc21285_set_mode(enum clock_event_mode mode,
struct clock_event_device *c)
{
@@ -58,7 +69,9 @@ static void ckevt_dc21285_set_mode(enum clock_event_mode mode,
TIMER_CNTL_DIV16;
break;
- default:
+ case CLOCK_EVT_MODE_ONESHOT:
+ case CLOCK_EVT_MODE_UNUSED:
+ case CLOCK_EVT_MODE_SHUTDOWN:
*CSR_TIMER1_CNTL = 0;
break;
}
@@ -66,9 +79,11 @@ static void ckevt_dc21285_set_mode(enum clock_event_mode mode,
static struct clock_event_device ckevt_dc21285 = {
.name = "dc21285_timer1",
- .features = CLOCK_EVT_FEAT_PERIODIC,
+ .features = CLOCK_EVT_FEAT_PERIODIC |
+ CLOCK_EVT_FEAT_ONESHOT,
.rating = 200,
.irq = IRQ_TIMER1,
+ .set_next_event = ckevt_dc21285_set_next_event,
.set_mode = ckevt_dc21285_set_mode,
};
@@ -78,6 +93,10 @@ static irqreturn_t timer1_interrupt(int irq, void *dev_id)
*CSR_TIMER1_CLR = 0;
+ /* Stop the timer if in one-shot mode */
+ if (ce->mode == CLOCK_EVT_MODE_ONESHOT)
+ *CSR_TIMER1_CNTL = 0;
+
ce->event_handler(ce);
return IRQ_HANDLED;
@@ -96,11 +115,28 @@ static struct irqaction footbridge_timer_irq = {
void __init footbridge_timer_init(void)
{
struct clock_event_device *ce = &ckevt_dc21285;
+ unsigned rate = DIV_ROUND_CLOSEST(mem_fclk_21285, 16);
- clocksource_register_hz(&cksrc_dc21285, (mem_fclk_21285 + 8) / 16);
+ clocksource_register_hz(&cksrc_dc21285, rate);
setup_irq(ce->irq, &footbridge_timer_irq);
ce->cpumask = cpumask_of(smp_processor_id());
- clockevents_config_and_register(ce, mem_fclk_21285, 0x4, 0xffffff);
+ clockevents_config_and_register(ce, rate, 0x4, 0xffffff);
+}
+
+static u32 notrace footbridge_read_sched_clock(void)
+{
+ return ~*CSR_TIMER3_VALUE;
+}
+
+void __init footbridge_sched_clock(void)
+{
+ unsigned rate = DIV_ROUND_CLOSEST(mem_fclk_21285, 16);
+
+ *CSR_TIMER3_LOAD = 0;
+ *CSR_TIMER3_CLR = 0;
+ *CSR_TIMER3_CNTL = TIMER_CNTL_ENABLE | TIMER_CNTL_DIV16;
+
+ setup_sched_clock(footbridge_read_sched_clock, 24, rate);
}
diff --git a/arch/arm/mach-footbridge/ebsa285.c b/arch/arm/mach-footbridge/ebsa285.c
index 1a7235fb52ac..aee8300f3490 100644
--- a/arch/arm/mach-footbridge/ebsa285.c
+++ b/arch/arm/mach-footbridge/ebsa285.c
@@ -4,6 +4,7 @@
* EBSA285 machine fixup
*/
#include <linux/init.h>
+#include <linux/io.h>
#include <linux/spinlock.h>
#include <linux/slab.h>
#include <linux/leds.h>
@@ -17,6 +18,11 @@
/* LEDs */
#if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
+#define XBUS_AMBER_L BIT(0)
+#define XBUS_GREEN_L BIT(1)
+#define XBUS_RED_L BIT(2)
+#define XBUS_TOGGLE BIT(7)
+
struct ebsa285_led {
struct led_classdev cdev;
u8 mask;
@@ -36,6 +42,7 @@ static const struct {
};
static unsigned char hw_led_state;
+static void __iomem *xbus;
static void ebsa285_led_set(struct led_classdev *cdev,
enum led_brightness b)
@@ -47,7 +54,7 @@ static void ebsa285_led_set(struct led_classdev *cdev,
hw_led_state |= led->mask;
else
hw_led_state &= ~led->mask;
- *XBUS_LEDS = hw_led_state;
+ writeb(hw_led_state, xbus);
}
static enum led_brightness ebsa285_led_get(struct led_classdev *cdev)
@@ -65,9 +72,13 @@ static int __init ebsa285_leds_init(void)
if (!machine_is_ebsa285())
return -ENODEV;
+ xbus = ioremap(XBUS_CS2, SZ_4K);
+ if (!xbus)
+ return -ENOMEM;
+
/* 3 LEDS all off */
- hw_led_state = XBUS_LED_AMBER | XBUS_LED_GREEN | XBUS_LED_RED;
- *XBUS_LEDS = hw_led_state;
+ hw_led_state = XBUS_AMBER_L | XBUS_GREEN_L | XBUS_RED_L;
+ writeb(hw_led_state, xbus);
for (i = 0; i < ARRAY_SIZE(ebsa285_leds); i++) {
struct ebsa285_led *led;
@@ -104,6 +115,7 @@ MACHINE_START(EBSA285, "EBSA285")
.video_start = 0x000a0000,
.video_end = 0x000bffff,
.map_io = footbridge_map_io,
+ .init_early = footbridge_sched_clock,
.init_irq = footbridge_init_irq,
.init_time = footbridge_timer_init,
.restart = footbridge_restart,
diff --git a/arch/arm/mach-footbridge/include/mach/hardware.h b/arch/arm/mach-footbridge/include/mach/hardware.h
index e3d6ccac2162..02f6d7a706b1 100644
--- a/arch/arm/mach-footbridge/include/mach/hardware.h
+++ b/arch/arm/mach-footbridge/include/mach/hardware.h
@@ -51,11 +51,7 @@
#define PCIMEM_SIZE 0x01000000
#define PCIMEM_BASE MMU_IO(0xf0000000, 0x80000000)
-#define XBUS_LEDS ((volatile unsigned char *)(XBUS_BASE + 0x12000))
-#define XBUS_LED_AMBER (1 << 0)
-#define XBUS_LED_GREEN (1 << 1)
-#define XBUS_LED_RED (1 << 2)
-#define XBUS_LED_TOGGLE (1 << 8)
+#define XBUS_CS2 0x40012000
#define XBUS_SWITCH ((volatile unsigned char *)(XBUS_BASE + 0x12000))
#define XBUS_SWITCH_SWITCH ((*XBUS_SWITCH) & 15)
generated by cgit v1.2.3 (git 2.0.4) at 2024-05-11 19:25:22 +0000