ARM: OMAP2: skip unnecessary TLDR write during non-autoreload for gptimer

[linux-2.6-omap-h63xx.git] / arch / arm / plat-omap / dmtimer.c

diff --git a/arch/arm/plat-omap/dmtimer.c b/arch/arm/plat-omap/dmtimer.c
index 743a4abcd85d99f6a23bb897be2315b57012fc6f..e4f0ce04ba928130f8bfd973c9cc04d05b013f19 100644 (file)
--- a/arch/arm/plat-omap/dmtimer.c
+++ b/arch/arm/plat-omap/dmtimer.c
@@ -32,9 +32,9 @@
 #include <linux/list.h>
 #include <linux/clk.h>
 #include <linux/delay.h>
+#include <linux/io.h>
 #include <mach/hardware.h>
 #include <mach/dmtimer.h>
-#include <asm/io.h>
 #include <mach/irqs.h>
 
 /* register offsets */
@@ -539,10 +539,6 @@ void omap_dm_timer_set_load(struct omap_dm_timer *timer, int autoreload,
        omap_dm_timer_write_reg(timer, OMAP_TIMER_CTRL_REG, l);
        omap_dm_timer_write_reg(timer, OMAP_TIMER_LOAD_REG, load);
 
-       /* REVISIT: hw feature, ttgr overtaking tldr? */
-       while (readl(timer->io_base + (OMAP_TIMER_WRITE_PEND_REG & 0xff)))
-               cpu_relax();
-
        omap_dm_timer_write_reg(timer, OMAP_TIMER_TRIGGER_REG, 0);
 }
 
@@ -553,14 +549,15 @@ void omap_dm_timer_set_load_start(struct omap_dm_timer *timer, int autoreload,
        u32 l;
 
        l = omap_dm_timer_read_reg(timer, OMAP_TIMER_CTRL_REG);
-       if (autoreload)
+       if (autoreload) {
                l |= OMAP_TIMER_CTRL_AR;
-       else
+               omap_dm_timer_write_reg(timer, OMAP_TIMER_LOAD_REG, load);
+       } else {
                l &= ~OMAP_TIMER_CTRL_AR;
+       }
        l |= OMAP_TIMER_CTRL_ST;
 
        omap_dm_timer_write_reg(timer, OMAP_TIMER_COUNTER_REG, load);
-       omap_dm_timer_write_reg(timer, OMAP_TIMER_LOAD_REG, load);
        omap_dm_timer_write_reg(timer, OMAP_TIMER_CTRL_REG, l);
 }
 
@@ -693,7 +690,7 @@ int __init omap_dm_timer_init(void)
 
        for (i = 0; i < dm_timer_count; i++) {
                timer = &dm_timers[i];
-               timer->io_base = (void __iomem *)io_p2v(timer->phys_base);
+               timer->io_base = IO_ADDRESS(timer->phys_base);
 #if defined(CONFIG_ARCH_OMAP2) || defined(CONFIG_ARCH_OMAP3)
                if (cpu_class_is_omap2()) {
                        char clk_name[16];