microblaze: timer: Clear driver init function

- Use of_iomap
- Use of_property_read_u32
- Fix printk

Signed-off-by: Michal Simek <michal.simek@xilinx.com>

1 files changed, 15 insertions, 13 deletions

diff --git a/arch/microblaze/kernel/timer.c b/arch/microblaze/kernel/timer.c
index 6cb7f3b1914a..e10e0b8548ab 100644
--- a/arch/microblaze/kernel/timer.c
+++ b/arch/microblaze/kernel/timer.c
@@ -22,6 +22,7 @@
 #include <linux/clocksource.h>
 #include <linux/clockchips.h>
 #include <linux/io.h>
+#include <linux/of_address.h>
 #include <linux/bug.h>
 #include <asm/cpuinfo.h>
 #include <asm/setup.h>
@@ -29,7 +30,7 @@
 #include <asm/irq.h>
 #include <linux/cnt32_to_63.h>
 
-static unsigned int timer_baseaddr;
+static void __iomem *timer_baseaddr;
 
 static unsigned int freq_div_hz;
 static unsigned int timer_clock_freq;
@@ -242,26 +243,27 @@ static void __init xilinx_timer_init(struct device_node *timer)
 {
         u32 irq;
         u32 timer_num = 1;
-        const void *prop;
+        int ret;
+
+        timer_baseaddr = of_iomap(timer, 0);
+        if (!timer_baseaddr) {
+                pr_err("ERROR: invalid timer base address\n");
+                BUG();
+        }
 
-        timer_baseaddr = be32_to_cpup(of_get_property(timer, "reg", NULL));
-        timer_baseaddr = (unsigned long) ioremap(timer_baseaddr, PAGE_SIZE);
         irq = irq_of_parse_and_map(timer, 0);
-        timer_num = be32_to_cpup(of_get_property(timer,
-                                                "xlnx,one-timer-only", NULL));
+
+        of_property_read_u32(timer, "xlnx,one-timer-only", &timer_num);
         if (timer_num) {
-                pr_emerg("Please   enable two timers in HW\n");
+                pr_emerg("Please enable two timers in HW\n");
                 BUG();
         }
 
-        pr_info("%s #0 at 0x%08x, irq=%d\n",
-                timer->name, timer_baseaddr, irq);
+        pr_info("%s: irq=%d\n", timer->full_name, irq);
 
         /* If there is clock-frequency property than use it */
-        prop = of_get_property(timer, "clock-frequency", NULL);
-        if (prop)
-                timer_clock_freq = be32_to_cpup(prop);
-        else
+        ret = of_property_read_u32(timer, "clock-frequency", &timer_clock_freq);
+        if (ret < 0)
                 timer_clock_freq = cpuinfo.cpu_clock_freq;
 
         freq_div_hz = timer_clock_freq / HZ;