From: Tony Lindgren <tony@atomide.com>
Date: Sun, 10 Jul 2005 18:58:09 +0000 (+0100)
Subject: [PATCH] ARM: 2800/1: OMAP update 3/11: Move OMAP1 core code into mach-omap1 directory
X-Git-Tag: v2.6.13-rc3~95^2~10
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=3b59b6beb423267e8fe2ef3596d98aba0b910341;p=platform%2Fkernel%2Flinux-3.10.git

[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 @@ static void omap_mask_ack_irq(unsigned int irq)
 	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 omap1510_irq_banks[] = {
 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 @@ static struct irqchip omap_irq_chip = {
 	.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 95%
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 @@ struct sys_timer omap_timer;
  * 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 @@ unsigned long long sched_clock(void)
 #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 @@ static irqreturn_t omap_32k_timer_interrupt(int irq, void *dev_id,
 	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 @@ static __init void omap_init_32k_timer(void)
  * 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();