[PATCH] ARM: 2800/1: OMAP update 3/11: Move OMAP1 core code into mach-omap1 directory
Patch from Tony Lindgren
This patch by Paul Mundt and other OMAP developers
moves OMAP1 specific IRQ, time, and FPGA code into
mach-omap1 directory.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-omap/fpga.c b/arch/arm/mach-omap1/fpga.c
similarity index 100%
rename from arch/arm/mach-omap/fpga.c
rename to arch/arm/mach-omap1/fpga.c
diff --git a/arch/arm/mach-omap/irq.c b/arch/arm/mach-omap1/irq.c
similarity index 94%
rename from arch/arm/mach-omap/irq.c
rename to arch/arm/mach-omap1/irq.c
index f01c992..a11b6d8 100644
--- a/arch/arm/mach-omap/irq.c
+++ b/arch/arm/mach-omap1/irq.c
@@ -56,6 +56,7 @@
struct omap_irq_bank {
unsigned long base_reg;
unsigned long trigger_map;
+ unsigned long wake_enable;
};
static unsigned int irq_bank_count = 0;
@@ -105,6 +106,19 @@
omap_ack_irq(irq);
}
+static int omap_wake_irq(unsigned int irq, unsigned int enable)
+{
+ int bank = IRQ_BANK(irq);
+
+ if (enable)
+ irq_banks[bank].wake_enable |= IRQ_BIT(irq);
+ else
+ irq_banks[bank].wake_enable &= ~IRQ_BIT(irq);
+
+ return 0;
+}
+
+
/*
* Allows tuning the IRQ type and priority
*
@@ -145,7 +159,7 @@
static struct omap_irq_bank omap1610_irq_banks[] = {
{ .base_reg = OMAP_IH1_BASE, .trigger_map = 0xb3fefe8f },
{ .base_reg = OMAP_IH2_BASE, .trigger_map = 0xfdb7c1fd },
- { .base_reg = OMAP_IH2_BASE + 0x100, .trigger_map = 0xfffff7ff },
+ { .base_reg = OMAP_IH2_BASE + 0x100, .trigger_map = 0xffffb7ff },
{ .base_reg = OMAP_IH2_BASE + 0x200, .trigger_map = 0xffffffff },
};
#endif
@@ -154,6 +168,7 @@
.ack = omap_mask_ack_irq,
.mask = omap_mask_irq,
.unmask = omap_unmask_irq,
+ .wake = omap_wake_irq,
};
void __init omap_init_irq(void)
diff --git a/arch/arm/mach-omap/time.c b/arch/arm/mach-omap1/time.c
similarity index 94%
rename from arch/arm/mach-omap/time.c
rename to arch/arm/mach-omap1/time.c
index dd34e9f..d540539 100644
--- a/arch/arm/mach-omap/time.c
+++ b/arch/arm/mach-omap1/time.c
@@ -1,5 +1,5 @@
/*
- * linux/arch/arm/mach-omap/time.c
+ * linux/arch/arm/mach-omap1/time.c
*
* OMAP Timers
*
@@ -58,17 +58,9 @@
* MPU timer
* ---------------------------------------------------------------------------
*/
-#define OMAP_MPU_TIMER1_BASE (0xfffec500)
-#define OMAP_MPU_TIMER2_BASE (0xfffec600)
-#define OMAP_MPU_TIMER3_BASE (0xfffec700)
#define OMAP_MPU_TIMER_BASE OMAP_MPU_TIMER1_BASE
#define OMAP_MPU_TIMER_OFFSET 0x100
-#define MPU_TIMER_FREE (1 << 6)
-#define MPU_TIMER_CLOCK_ENABLE (1 << 5)
-#define MPU_TIMER_AR (1 << 1)
-#define MPU_TIMER_ST (1 << 0)
-
/* cycles to nsec conversions taken from arch/i386/kernel/timers/timer_tsc.c,
* converted to use kHz by Kevin Hilman */
/* convert from cycles(64bits) => nanoseconds (64bits)
@@ -255,6 +247,13 @@
#define OMAP_32K_TIMER_TCR 0x04
#define OMAP_32K_TICKS_PER_HZ (32768 / HZ)
+#if (32768 % HZ) != 0
+/* We cannot ignore modulo.
+ * Potential error can be as high as several percent.
+ */
+#define OMAP_32K_TICK_MODULO (32768 % HZ)
+static unsigned modulo_count = 0; /* Counts 1/HZ units */
+#endif
/*
* TRM says 1 / HZ = ( TVR + 1) / 32768, so TRV = (32768 / HZ) - 1
@@ -331,6 +330,19 @@
now = omap_32k_sync_timer_read();
while (now - omap_32k_last_tick >= OMAP_32K_TICKS_PER_HZ) {
+#ifdef OMAP_32K_TICK_MODULO
+ /* Modulo addition may put omap_32k_last_tick ahead of now
+ * and cause unwanted repetition of the while loop.
+ */
+ if (unlikely(now - omap_32k_last_tick == ~0))
+ break;
+
+ modulo_count += OMAP_32K_TICK_MODULO;
+ if (modulo_count > HZ) {
+ ++omap_32k_last_tick;
+ modulo_count -= HZ;
+ }
+#endif
omap_32k_last_tick += OMAP_32K_TICKS_PER_HZ;
timer_tick(regs);
}
@@ -407,7 +419,7 @@
* Timer initialization
* ---------------------------------------------------------------------------
*/
-void __init omap_timer_init(void)
+static void __init omap_timer_init(void)
{
#if defined(CONFIG_OMAP_MPU_TIMER)
omap_init_mpu_timer();
