ARM: davinci: dm646x: switch to using the clocksource driver

We now have a proper clocksource driver for davinci. Switch the dm646x
platform to using it.
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Reviewed-by: David Lechner <david@lechnology.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>

arch/arm/mach-davinci/dm646x.c

@@ -28,7 +28,8 @@
 #include <mach/cputype.h>
 #include <mach/mux.h>
 #include <mach/serial.h>
-#include <mach/time.h>
+
+#include <clocksource/timer-davinci.h>
 
 #include "asp.h"
 #include "davinci.h"
@@ -501,15 +502,15 @@ static struct davinci_id dm646x_ids[] = {
 };
 
 /*
- * T0_BOT: Timer 0, bottom:  clockevent source for hrtimers
- * T0_TOP: Timer 0, top   :  clocksource for generic timekeeping
- * T1_BOT: Timer 1, bottom:  (used by DSP in TI DSPLink code)
- * T1_TOP: Timer 1, top   :  <unused>
+ * Bottom half of timer0 is used for clockevent, top half is used for
+ * clocksource.
  */
-static struct davinci_timer_info dm646x_timer_info = {
-	.timers		= davinci_timer_instance,
-	.clockevent_id	= T0_BOT,
-	.clocksource_id	= T0_TOP,
+static const struct davinci_timer_cfg dm646x_timer_cfg = {
+	.reg = DEFINE_RES_IO(DAVINCI_TIMER0_BASE, SZ_4K),
+	.irq = {
+		DEFINE_RES_IRQ(DAVINCI_INTC_IRQ(IRQ_TINT0_TINT12)),
+		DEFINE_RES_IRQ(DAVINCI_INTC_IRQ(IRQ_TINT0_TINT34)),
+	},
 };
 
 static struct plat_serial8250_port dm646x_serial0_platform_data[] = {
@@ -587,7 +588,6 @@ static const struct davinci_soc_info davinci_soc_info_dm646x = {
 	.pinmux_base		= DAVINCI_SYSTEM_MODULE_BASE,
 	.pinmux_pins		= dm646x_pins,
 	.pinmux_pins_num	= ARRAY_SIZE(dm646x_pins),
-	.timer_info		= &dm646x_timer_info,
 	.emac_pdata		= &dm646x_emac_pdata,
 	.sram_dma		= 0x10010000,
 	.sram_len		= SZ_32K,
@@ -652,6 +652,7 @@ void __init dm646x_init_time(unsigned long ref_clk_rate,
 {
 	void __iomem *pll1, *psc;
 	struct clk *clk;
+	int rv;
 
 	clk_register_fixed_rate(NULL, "ref_clk", NULL, 0, ref_clk_rate);
 	clk_register_fixed_rate(NULL, "aux_clkin", NULL, 0, aux_clkin_rate);
@@ -668,7 +669,8 @@ void __init dm646x_init_time(unsigned long ref_clk_rate,
 		return;
 	}
 
-	davinci_timer_init(clk);
+	rv = davinci_timer_register(clk, &dm646x_timer_cfg);
+	WARN(rv, "Unable to register the timer: %d\n", rv);
 }
 
 static struct resource dm646x_pll2_resources[] = {