Merge branch 'ux500-timers' of...

Merge branch 'ux500-timers' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson into ux500/timers

* 'ux500-timers' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson:
  ARM: plat-nomadik: modernize MTU timer
  ARM: plat-nomadik: handle clocking properly
  ARM: plat-nomadik: get rid of global mtu base pointer

arch/arm/mach-nomadik/board-nhk8815.c

@@ -27,11 +27,11 @@
 #include <asm/mach/arch.h>
 #include <asm/mach/irq.h>
 #include <asm/mach/flash.h>
+#include <asm/mach/time.h>
 
 #include <plat/gpio-nomadik.h>
 #include <plat/mtu.h>
 
-#include <mach/setup.h>
 #include <mach/nand.h>
 #include <mach/fsmc.h>
 
@@ -255,10 +255,7 @@ static void __init nomadik_timer_init(void)
 	src_cr |= SRC_CR_INIT_VAL;
 	writel(src_cr, io_p2v(NOMADIK_SRC_BASE));
 
-	/* Save global pointer to mtu, used by platform timer code */
-	mtu_base = io_p2v(NOMADIK_MTU0_BASE);
-
-	nmdk_timer_init();
+	nmdk_timer_init(io_p2v(NOMADIK_MTU0_BASE));
 }
 
 static struct sys_timer nomadik_timer = {

arch/arm/mach-nomadik/include/mach/setup.h

-
-/*
- * These symbols are needed for board-specific files to call their
- * own cpu-specific files
- */
-
-#ifndef __ASM_ARCH_SETUP_H
-#define __ASM_ARCH_SETUP_H
-
-#include <asm/mach/time.h>
-#include <linux/init.h>
-
-#ifdef CONFIG_NOMADIK_8815
-
-extern void nmdk_timer_init(void);
-
-#endif /* NOMADIK_8815 */
-
-#endif /*  __ASM_ARCH_SETUP_H */

arch/arm/mach-ux500/include/mach/setup.h

@@ -27,9 +27,6 @@ extern void __init u5500_sdi_init(void);
 
 extern void __init db5500_dma_init(void);
 
-/* We re-use nomadik_timer for this platform */
-extern void nmdk_timer_init(void);
-
 struct amba_device;
 extern void __init amba_add_devices(struct amba_device *devs[], int num);
 

arch/arm/mach-ux500/timer.c

@@ -17,19 +17,20 @@
 
 static void __init ux500_timer_init(void)
 {
+	void __iomem *mtu_timer_base;
 	void __iomem *prcmu_timer_base;
 
 	if (cpu_is_u5500()) {
 #ifdef CONFIG_LOCAL_TIMERS
 		twd_base = __io_address(U5500_TWD_BASE);
 #endif
-		mtu_base = __io_address(U5500_MTU0_BASE);
+		mtu_timer_base = __io_address(U5500_MTU0_BASE);
 		prcmu_timer_base = __io_address(U5500_PRCMU_TIMER_3_BASE);
 	} else if (cpu_is_u8500()) {
 #ifdef CONFIG_LOCAL_TIMERS
 		twd_base = __io_address(U8500_TWD_BASE);
 #endif
-		mtu_base = __io_address(U8500_MTU0_BASE);
+		mtu_timer_base = __io_address(U8500_MTU0_BASE);
 		prcmu_timer_base = __io_address(U8500_PRCMU_TIMER_4_BASE);
 	} else {
 		ux500_unknown_soc();
@@ -52,7 +53,7 @@ static void __init ux500_timer_init(void)
 	 *
 	 */
 
-	nmdk_timer_init();
+	nmdk_timer_init(mtu_timer_base);
 	clksrc_dbx500_prcmu_init(prcmu_timer_base);
 }
 

arch/arm/plat-nomadik/include/plat/mtu.h

 #ifndef __PLAT_MTU_H
 #define __PLAT_MTU_H
 
-/* should be set by the platform code */
-extern void __iomem *mtu_base;
-
+void nmdk_timer_init(void __iomem *base);
 void nmdk_clkevt_reset(void);
 void nmdk_clksrc_reset(void);
 

arch/arm/plat-nomadik/timer.c

@@ -20,12 +20,6 @@
 #include <asm/mach/time.h>
 #include <asm/sched_clock.h>
 
-/*
- * Guaranteed runtime conversion range in seconds for
- * the clocksource and clockevent.
- */
-#define MTU_MIN_RANGE 4
-
 /*
  * The MTU device hosts four different counters, with 4 set of
  * registers. These are register names.
@@ -66,12 +60,11 @@
 #define MTU_PCELL2	0xff8
 #define MTU_PCELL3	0xffC
 
+static void __iomem *mtu_base;
 static bool clkevt_periodic;
 static u32 clk_prescale;
 static u32 nmdk_cycle;		/* write-once */
 
-void __iomem *mtu_base; /* Assigned by machine code */
-
 #ifdef CONFIG_NOMADIK_MTU_SCHED_CLOCK
 /*
  * Override the global weak sched_clock symbol with this
@@ -103,7 +96,6 @@ static int nmdk_clkevt_next(unsigned long evt, struct clock_event_device *ev)
 void nmdk_clkevt_reset(void)
 {
 	if (clkevt_periodic) {
-
 		/* Timer: configure load and background-load, and fire it up */
 		writel(nmdk_cycle, mtu_base + MTU_LR(1));
 		writel(nmdk_cycle, mtu_base + MTU_BGLR(1));
@@ -121,7 +113,6 @@ void nmdk_clkevt_reset(void)
 static void nmdk_clkevt_mode(enum clock_event_mode mode,
 			     struct clock_event_device *dev)
 {
-
 	switch (mode) {
 	case CLOCK_EVT_MODE_PERIODIC:
 		clkevt_periodic = true;
@@ -183,15 +174,16 @@ void nmdk_clksrc_reset(void)
 	       mtu_base + MTU_CR(0));
 }
 
-void __init nmdk_timer_init(void)
+void __init nmdk_timer_init(void __iomem *base)
 {
 	unsigned long rate;
 	struct clk *clk0;
 
+	mtu_base = base;
 	clk0 = clk_get_sys("mtu0", NULL);
 	BUG_ON(IS_ERR(clk0));
-
-	clk_enable(clk0);
+	BUG_ON(clk_prepare(clk0) < 0);
+	BUG_ON(clk_enable(clk0) < 0);
 
 	/*
 	 * Tick rate is 2.4MHz for Nomadik and 2.4Mhz, 100MHz or 133 MHz
@@ -224,17 +216,8 @@ void __init nmdk_timer_init(void)
 	setup_sched_clock(nomadik_read_sched_clock, 32, rate);
 #endif
 
-	/* Timer 1 is used for events */
-
-	clockevents_calc_mult_shift(&nmdk_clkevt, rate, MTU_MIN_RANGE);
-
-	nmdk_clkevt.max_delta_ns =
-		clockevent_delta2ns(0xffffffff, &nmdk_clkevt);
-	nmdk_clkevt.min_delta_ns =
-		clockevent_delta2ns(0x00000002, &nmdk_clkevt);
-	nmdk_clkevt.cpumask	= cpumask_of(0);
-
-	/* Register irq and clockevents */
+	/* Timer 1 is used for events, register irq and clockevents */
 	setup_irq(IRQ_MTU0, &nmdk_timer_irq);
-	clockevents_register_device(&nmdk_clkevt);
+	nmdk_clkevt.cpumask = cpumask_of(0);
+	clockevents_config_and_register(&nmdk_clkevt, rate, 2, 0xffffffffU);
 }