ARM: OMAP: Add support for dmtimer v2 ip

The registers are slightly different between v1 and v2 ip that
is available in omap4 and later for some timers.

Add support for v2 ip by mapping the interrupt related registers
separately and adding func_base for the functional registers.

Also disable dmtimer driver features on omap4 for now as
those need the hwmod conversion series to deal with enabling
the timers properly in omap_dm_timer_init.

Signed-off-by: Afzal Mohammed <afzal@ti.com>
Tested-by: Hemant Pedanekar <hemantp@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 12 insertions, 11 deletions

diff --git a/arch/arm/mach-omap2/timer.c b/arch/arm/mach-omap2/timer.c
index cf1de7d2630..69466f38841 100644
--- a/arch/arm/mach-omap2/timer.c
+++ b/arch/arm/mach-omap2/timer.c
@@ -78,7 +78,7 @@ static irqreturn_t omap2_gp_timer_interrupt(int irq, void *dev_id)
 {
         struct clock_event_device *evt = &clockevent_gpt;
 
-        __omap_dm_timer_write_status(clkev.io_base, OMAP_TIMER_INT_OVERFLOW);
+        __omap_dm_timer_write_status(&clkev, OMAP_TIMER_INT_OVERFLOW);
 
         evt->event_handler(evt);
         return IRQ_HANDLED;
@@ -93,7 +93,7 @@ static struct irqaction omap2_gp_timer_irq = {
 static int omap2_gp_timer_set_next_event(unsigned long cycles,
                                          struct clock_event_device *evt)
 {
-        __omap_dm_timer_load_start(clkev.io_base, OMAP_TIMER_CTRL_ST,
+        __omap_dm_timer_load_start(&clkev, OMAP_TIMER_CTRL_ST,
                                                 0xffffffff - cycles, 1);
 
         return 0;
@@ -104,16 +104,16 @@ static void omap2_gp_timer_set_mode(enum clock_event_mode mode,
 {
         u32 period;
 
-        __omap_dm_timer_stop(clkev.io_base, 1, clkev.rate);
+        __omap_dm_timer_stop(&clkev, 1, clkev.rate);
 
         switch (mode) {
         case CLOCK_EVT_MODE_PERIODIC:
                 period = clkev.rate / HZ;
                 period -= 1;
                 /* Looks like we need to first set the load value separately */
-                __omap_dm_timer_write(clkev.io_base, OMAP_TIMER_LOAD_REG,
+                __omap_dm_timer_write(&clkev, OMAP_TIMER_LOAD_REG,
                                         0xffffffff - period, 1);
-                __omap_dm_timer_load_start(clkev.io_base,
+                __omap_dm_timer_load_start(&clkev,
                                         OMAP_TIMER_CTRL_AR | OMAP_TIMER_CTRL_ST,
                                                 0xffffffff - period, 1);
                 break;
@@ -189,7 +189,8 @@ static int __init omap_dm_timer_init_one(struct omap_dm_timer *timer,
                         clk_put(src);
                 }
         }
-        __omap_dm_timer_reset(timer->io_base, 1, 1);
+        __omap_dm_timer_init_regs(timer);
+        __omap_dm_timer_reset(timer, 1, 1);
         timer->posted = 1;
 
         timer->rate = clk_get_rate(timer->fclk);
@@ -210,7 +211,7 @@ static void __init omap2_gp_clockevent_init(int gptimer_id,
         omap2_gp_timer_irq.dev_id = (void *)&clkev;
         setup_irq(clkev.irq, &omap2_gp_timer_irq);
 
-        __omap_dm_timer_int_enable(clkev.io_base, OMAP_TIMER_INT_OVERFLOW);
+        __omap_dm_timer_int_enable(&clkev, OMAP_TIMER_INT_OVERFLOW);
 
         clockevent_gpt.mult = div_sc(clkev.rate, NSEC_PER_SEC,
                                      clockevent_gpt.shift);
@@ -251,7 +252,7 @@ static struct omap_dm_timer clksrc;
 static DEFINE_CLOCK_DATA(cd);
 static cycle_t clocksource_read_cycles(struct clocksource *cs)
 {
-        return (cycle_t)__omap_dm_timer_read_counter(clksrc.io_base, 1);
+        return (cycle_t)__omap_dm_timer_read_counter(&clksrc, 1);
 }
 
 static struct clocksource clocksource_gpt = {
@@ -266,7 +267,7 @@ static void notrace dmtimer_update_sched_clock(void)
 {
         u32 cyc;
 
-        cyc = __omap_dm_timer_read_counter(clksrc.io_base, 1);
+        cyc = __omap_dm_timer_read_counter(&clksrc, 1);
 
         update_sched_clock(&cd, cyc, (u32)~0);
 }
@@ -276,7 +277,7 @@ unsigned long long notrace sched_clock(void)
         u32 cyc = 0;
 
         if (clksrc.reserved)
-                cyc = __omap_dm_timer_read_counter(clksrc.io_base, 1);
+                cyc = __omap_dm_timer_read_counter(&clksrc, 1);
 
         return cyc_to_sched_clock(&cd, cyc, (u32)~0);
 }
@@ -293,7 +294,7 @@ static void __init omap2_gp_clocksource_init(int gptimer_id,
         pr_info("OMAP clocksource: GPTIMER%d at %lu Hz\n",
                 gptimer_id, clksrc.rate);
 
-        __omap_dm_timer_load_start(clksrc.io_base,
+        __omap_dm_timer_load_start(&clksrc,
                         OMAP_TIMER_CTRL_ST | OMAP_TIMER_CTRL_AR, 0, 1);
         init_sched_clock(&cd, dmtimer_update_sched_clock, 32, clksrc.rate);