Merge branch 'ux500/timers' into next/timer

* ux500/timers:
  ARM: plat-nomadik: modernize MTU timer
  ARM: plat-nomadik: handle clocking properly
  ARM: plat-nomadik: get rid of global mtu base pointer

6 files changed, 15 insertions, 58 deletions

diff --git a/arch/arm/mach-nomadik/board-nhk8815.c b/arch/arm/mach-nomadik/board-nhk8815.c
index 7c878bf00340..b77cb8465d31 100644
--- a/arch/arm/mach-nomadik/board-nhk8815.c
+++ b/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 = {
diff --git a/arch/arm/mach-nomadik/include/mach/setup.h b/arch/arm/mach-nomadik/include/mach/setup.h
deleted file mode 100644
index bcaeaf41c053..000000000000
--- a/arch/arm/mach-nomadik/include/mach/setup.h
+++ /dev/null
@@ -1,19 +0,0 @@
-
-/*
- * 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 */
diff --git a/arch/arm/mach-ux500/include/mach/setup.h b/arch/arm/mach-ux500/include/mach/setup.h
index a7d363fdb4cd..93d403955eaa 100644
--- a/arch/arm/mach-ux500/include/mach/setup.h
+++ b/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);
 
diff --git a/arch/arm/mach-ux500/timer.c b/arch/arm/mach-ux500/timer.c
index aea467d04ff7..fd0002431122 100644
--- a/arch/arm/mach-ux500/timer.c
+++ b/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);
 }
 
diff --git a/arch/arm/plat-nomadik/include/plat/mtu.h b/arch/arm/plat-nomadik/include/plat/mtu.h
index 6508e7694a4b..582641f3dc01 100644
--- a/arch/arm/plat-nomadik/include/plat/mtu.h
+++ b/arch/arm/plat-nomadik/include/plat/mtu.h
@@ -1,9 +1,7 @@
 #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);
 
diff --git a/arch/arm/plat-nomadik/timer.c b/arch/arm/plat-nomadik/timer.c
index ad1b45b605a4..9222e5522a43 100644
--- a/arch/arm/plat-nomadik/timer.c
+++ b/arch/arm/plat-nomadik/timer.c
@@ -21,12 +21,6 @@
 #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);
 }