clocksource: sunxi: make use of CLKSRC_OF

Using CLKSRC_OF allows to remove the SoC specific sunxi_timer.h header,
and instead of using a custom init function in the machine definition
use the standard clocksource_of_init function.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

4 files changed, 13 insertions, 41 deletions

diff --git a/arch/arm/mach-sunxi/Kconfig b/arch/arm/mach-sunxi/Kconfig
index 8709a39bd34c..06c28945357d 100644
--- a/arch/arm/mach-sunxi/Kconfig
+++ b/arch/arm/mach-sunxi/Kconfig
@@ -1,6 +1,7 @@
 config ARCH_SUNXI
         bool "Allwinner A1X SOCs" if ARCH_MULTI_V7
         select CLKSRC_MMIO
+        select CLKSRC_OF
         select COMMON_CLK
         select GENERIC_CLOCKEVENTS
         select GENERIC_IRQ_CHIP
diff --git a/arch/arm/mach-sunxi/sunxi.c b/arch/arm/mach-sunxi/sunxi.c
index 23afb732cb40..b26748d82045 100644
--- a/arch/arm/mach-sunxi/sunxi.c
+++ b/arch/arm/mach-sunxi/sunxi.c
@@ -10,6 +10,7 @@
  * warranty of any kind, whether express or implied.
  */
 
+#include <linux/clocksource.h>
 #include <linux/delay.h>
 #include <linux/kernel.h>
 #include <linux/init.h>
@@ -17,8 +18,8 @@
 #include <linux/of_irq.h>
 #include <linux/of_platform.h>
 #include <linux/io.h>
-#include <linux/sunxi_timer.h>
 
+#include <linux/clk/sunxi.h>
 #include <linux/irqchip/sunxi.h>
 
 #include <asm/mach/arch.h>
@@ -81,6 +82,12 @@ void __init sunxi_map_io(void)
         iotable_init(sunxi_io_desc, ARRAY_SIZE(sunxi_io_desc));
 }
 
+static void __init sunxi_timer_init(void)
+{
+        sunxi_init_clocks();
+        clocksource_of_init();
+}
+
 static void __init sunxi_dt_init(void)
 {
         sunxi_setup_restart();
@@ -100,6 +107,6 @@ DT_MACHINE_START(SUNXI_DT, "Allwinner A1X (Device Tree)")
         .init_irq       = sunxi_init_irq,
         .handle_irq     = sunxi_handle_irq,
         .restart        = sunxi_restart,
-        .init_time      = &sunxi_timer_init,
+        .init_time      = sunxi_timer_init,
         .dt_compat      = sunxi_board_dt_compat,
 MACHINE_END
diff --git a/drivers/clocksource/sunxi_timer.c b/drivers/clocksource/sunxi_timer.c
index 7a3ea236be52..308bbe328318 100644
--- a/drivers/clocksource/sunxi_timer.c
+++ b/drivers/clocksource/sunxi_timer.c
@@ -22,8 +22,6 @@
 #include <linux/of.h>
 #include <linux/of_address.h>
 #include <linux/of_irq.h>
-#include <linux/sunxi_timer.h>
-#include <linux/clk/sunxi.h>
 
 #define TIMER_IRQ_EN_REG        0x00
 #define TIMER_IRQ_EN(val)               (1 << val)
@@ -98,23 +96,13 @@ static struct irqaction sunxi_timer_irq = {
         .dev_id = &sunxi_clockevent,
 };
 
-static struct of_device_id sunxi_timer_dt_ids[] = {
-        { .compatible = "allwinner,sunxi-timer" },
-        { }
-};
-
-void __init sunxi_timer_init(void)
+static void __init sunxi_timer_init(struct device_node *node)
 {
-        struct device_node *node;
         unsigned long rate = 0;
         struct clk *clk;
         int ret, irq;
         u32 val;
 
-        node = of_find_matching_node(NULL, sunxi_timer_dt_ids);
-        if (!node)
-                panic("No sunxi timer node");
-
         timer_base = of_iomap(node, 0);
         if (!timer_base)
                 panic("Can't map registers");
@@ -123,8 +111,6 @@ void __init sunxi_timer_init(void)
         if (irq <= 0)
                 panic("Can't parse IRQ");
 
-        sunxi_init_clocks();
-
         clk = of_clk_get(node, 0);
         if (IS_ERR(clk))
                 panic("Can't get timer clock");
@@ -158,3 +144,5 @@ void __init sunxi_timer_init(void)
         clockevents_config_and_register(&sunxi_clockevent, rate / TIMER_SCAL,
                                         0x1, 0xff);
 }
+CLOCKSOURCE_OF_DECLARE(sunxi, "allwinner,sunxi-timer",
+                       sunxi_timer_init);
diff --git a/include/linux/sunxi_timer.h b/include/linux/sunxi_timer.h
deleted file mode 100644
index 18081787e5f3..000000000000
--- a/include/linux/sunxi_timer.h
+++ /dev/null
@@ -1,24 +0,0 @@
-/*
- * Copyright 2012 Maxime Ripard
- *
- * Maxime Ripard <maxime.ripard@free-electrons.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
-
-#ifndef __SUNXI_TIMER_H
-#define __SUNXI_TIMER_H
-
-#include <asm/mach/time.h>
-
-void sunxi_timer_init(void);
-
-#endif