CLOCKSOURCE: mips-gic: Split clocksource and clockevent initialization

This is preparation work for the introduction of clockevent frequency
update with a clock notifier. This is only possible when the device
is passed a clk struct, so let's split the legacy and devicetree
initialization.

Reviewed-by: Andrew Bresticker <[email protected]>
Signed-off-by: Ezequiel Garcia <[email protected]>
Acked-by: Daniel Lezcano <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: Thomas Gleixner <[email protected]>
Cc: James Hartley <[email protected]>
Cc: Govindraj Raja <[email protected]>
Cc: Damien Horsley <[email protected]>
Cc: James Hogan <[email protected]>
Cc: Ezequiel Garcia <[email protected]>
Patchwork: https://patchwork.linux-mips.org/patch/10781/
Signed-off-by: Ralf Baechle <[email protected]>

drivers/clocksource/mips-gic-timer.c

@@ -142,11 +142,6 @@ static void __init __gic_clocksource_init(void)
 	ret = clocksource_register_hz(&gic_clocksource, gic_frequency);
 	if (ret < 0)
 		pr_warn("GIC: Unable to register clocksource\n");
-
-	gic_clockevent_init();
-
-	/* And finally start the counter */
-	gic_start_count();
 }
 
 void __init gic_clocksource_init(unsigned int frequency)
@@ -156,6 +151,10 @@ void __init gic_clocksource_init(unsigned int frequency)
 		GIC_LOCAL_TO_HWIRQ(GIC_LOCAL_INT_COMPARE);
 
 	__gic_clocksource_init();
+	gic_clockevent_init();
+
+	/* And finally start the counter */
+	gic_start_count();
 }
 
 static void __init gic_clocksource_of_init(struct device_node *node)
@@ -187,6 +186,10 @@ static void __init gic_clocksource_of_init(struct device_node *node)
 	}
 
 	__gic_clocksource_init();
+	gic_clockevent_init();
+
+	/* And finally start the counter */
+	gic_start_count();
 }
 CLOCKSOURCE_OF_DECLARE(mips_gic_timer, "mti,gic-timer",
 		       gic_clocksource_of_init);