1 files changed, 36 insertions, 28 deletions

diff --git a/arch/arm/mach-omap2/timer-gp.c b/arch/arm/mach-omap2/timer-gp.c
index cf2ec85b95fa..2b8cb701c89f 100644
--- a/arch/arm/mach-omap2/timer-gp.c
+++ b/arch/arm/mach-omap2/timer-gp.c
@@ -262,20 +262,22 @@ static void __init omap2_gp_clockevent_init(int gptimer_id,
  * sync counter.  See clocksource setup in plat-omap/counter_32k.c
  */
 
-static void __init omap2_gp_clocksource_init(void)
+static void __init omap2_gp_clocksource_init(int unused, const char *dummy)
 {
         omap_init_clocksource_32k();
 }
 
 #else
+
+static struct omap_dm_timer clksrc;
+
 /*
  * clocksource
  */
 static DEFINE_CLOCK_DATA(cd);
-static struct omap_dm_timer *gpt_clocksource;
 static cycle_t clocksource_read_cycles(struct clocksource *cs)
 {
-        return (cycle_t)omap_dm_timer_read_counter(gpt_clocksource);
+        return (cycle_t)__omap_dm_timer_read_counter(clksrc.io_base, 1);
 }
 
 static struct clocksource clocksource_gpt = {
@@ -290,43 +292,48 @@ static void notrace dmtimer_update_sched_clock(void)
 {
         u32 cyc;
 
-        cyc = omap_dm_timer_read_counter(gpt_clocksource);
+        cyc = __omap_dm_timer_read_counter(clksrc.io_base, 1);
 
         update_sched_clock(&cd, cyc, (u32)~0);
 }
 
-/* Setup free-running counter for clocksource */
-static void __init omap2_gp_clocksource_init(void)
+unsigned long long notrace sched_clock(void)
 {
-        static struct omap_dm_timer *gpt;
-        u32 tick_rate;
-        static char err1[] __initdata = KERN_ERR
-                "%s: failed to request dm-timer\n";
-        static char err2[] __initdata = KERN_ERR
-                "%s: can't register clocksource!\n";
+        u32 cyc = 0;
 
-        gpt = omap_dm_timer_request();
-        if (!gpt)
-                printk(err1, clocksource_gpt.name);
-        gpt_clocksource = gpt;
+        if (clksrc.reserved)
+                cyc = __omap_dm_timer_read_counter(clksrc.io_base, 1);
 
-        omap_dm_timer_set_source(gpt, OMAP_TIMER_SRC_SYS_CLK);
-        tick_rate = clk_get_rate(omap_dm_timer_get_fclk(gpt));
+        return cyc_to_sched_clock(&cd, cyc, (u32)~0);
+}
+
+/* Setup free-running counter for clocksource */
+static void __init omap2_gp_clocksource_init(int gptimer_id,
+                                                const char *fck_source)
+{
+        int res;
+
+        res = omap_dm_timer_init_one(&clksrc, gptimer_id, fck_source);
+        BUG_ON(res);
 
-        omap_dm_timer_set_load_start(gpt, 1, 0);
+        pr_info("OMAP clocksource: GPTIMER%d at %lu Hz\n",
+                gptimer_id, clksrc.rate);
 
-        init_sched_clock(&cd, dmtimer_update_sched_clock, 32, tick_rate);
+        __omap_dm_timer_load_start(clksrc.io_base, OMAP_TIMER_CTRL_ST, 0, 1);
+        init_sched_clock(&cd, dmtimer_update_sched_clock, 32, clksrc.rate);
 
-        if (clocksource_register_hz(&clocksource_gpt, tick_rate))
-                printk(err2, clocksource_gpt.name);
+        if (clocksource_register_hz(&clocksource_gpt, clksrc.rate))
+                pr_err("Could not register clocksource %s\n",
+                        clocksource_gpt.name);
 }
 #endif
 
-#define OMAP_SYS_TIMER_INIT(name, clkev_nr, clkev_src)                  \
+#define OMAP_SYS_TIMER_INIT(name, clkev_nr, clkev_src,                  \
+                                clksrc_nr, clksrc_src)                  \
 static void __init omap##name##_timer_init(void)                        \
 {                                                                       \
         omap2_gp_clockevent_init((clkev_nr), clkev_src);                \
-        omap2_gp_clocksource_init();                                    \
+        omap2_gp_clocksource_init((clksrc_nr), clksrc_src);             \
 }
 
 #define OMAP_SYS_TIMER(name)                                            \
@@ -335,14 +342,15 @@ struct sys_timer omap##name##_timer = {					\
 };
 
 #ifdef CONFIG_ARCH_OMAP2
-OMAP_SYS_TIMER_INIT(2, 1, OMAP2_CLKEV_SOURCE)
+OMAP_SYS_TIMER_INIT(2, 1, OMAP2_CLKEV_SOURCE, 2, OMAP2_MPU_SOURCE)
 OMAP_SYS_TIMER(2)
 #endif
 
 #ifdef CONFIG_ARCH_OMAP3
-OMAP_SYS_TIMER_INIT(3, 1, OMAP3_CLKEV_SOURCE)
+OMAP_SYS_TIMER_INIT(3, 1, OMAP3_CLKEV_SOURCE, 2, OMAP3_MPU_SOURCE)
 OMAP_SYS_TIMER(3)
-OMAP_SYS_TIMER_INIT(3_secure, OMAP3_SECURE_TIMER, OMAP3_CLKEV_SOURCE)
+OMAP_SYS_TIMER_INIT(3_secure, OMAP3_SECURE_TIMER, OMAP3_CLKEV_SOURCE,
+                        2, OMAP3_MPU_SOURCE)
 OMAP_SYS_TIMER(3_secure)
 #endif
 
@@ -354,7 +362,7 @@ static void __init omap4_timer_init(void)
         BUG_ON(!twd_base);
 #endif
         omap2_gp_clockevent_init(1, OMAP4_CLKEV_SOURCE);
-        omap2_gp_clocksource_init();
+        omap2_gp_clocksource_init(2, OMAP4_MPU_SOURCE);
 }
 OMAP_SYS_TIMER(4)
 #endif