Au1xx0 CPU counter ticks at the full CPU clock speed, not at the halved
one -- this is not an issue with the current kernel since Alchemy uses its own
timer handler here which pays no attention to mips_hpt_frequency.
Additionally, mark au1xxx_timer_setup() __init because it is, get rid of
unneeded externs (note that (*do_gettimeoffset)() is already declared by
<asm/time.c>) and an unused variable, and kill some whitespace...
Signed-off-by: Sergei Shtylyov <sshtylyov@xxxxxxxxxxxxx>
Index: linux-mips/arch/mips/au1000/common/time.c
===================================================================
--- linux-mips.orig/arch/mips/au1000/common/time.c
+++ linux-mips/arch/mips/au1000/common/time.c
@@ -50,10 +50,6 @@
#include <linux/mc146818rtc.h>
#include <linux/timex.h>
-extern void do_softirq(void);
-extern volatile unsigned long wall_jiffies;
-unsigned long missed_heart_beats = 0;
-
static unsigned long r4k_offset; /* Amount to increment compare reg each time */
static unsigned long r4k_cur; /* What counter should be at next timer irq */
int no_au1xxx_32khz;
@@ -287,7 +283,6 @@ unsigned long cal_r4koff(void)
#else
cpu_speed = (au_readl(SYS_CPUPLL) & 0x0000003f) *
AU1000_SRC_CLK;
- count = cpu_speed / 2;
#endif
}
else {
@@ -296,10 +291,9 @@ unsigned long cal_r4koff(void)
* NOTE: some old silicon doesn't allow reading the PLL.
*/
cpu_speed = (au_readl(SYS_CPUPLL) & 0x0000003f) * AU1000_SRC_CLK;
- count = cpu_speed / 2;
no_au1xxx_32khz = 1;
}
- mips_hpt_frequency = count;
+ mips_hpt_frequency = cpu_speed;
// Equation: Baudrate = CPU / (SD * 2 * CLKDIV * 16)
set_au1x00_uart_baud_base(cpu_speed / (2 * ((int)(au_readl(SYS_POWERCTRL)&0x03) + 2) * 16));
spin_unlock_irqrestore(&time_lock, flags);
@@ -388,10 +382,9 @@ static unsigned long do_fast_pm_gettimeo
}
#endif
-void au1xxx_timer_setup(struct irqaction *irq)
+void __init au1xxx_timer_setup(struct irqaction *irq)
{
- unsigned int est_freq;
- extern unsigned long (*do_gettimeoffset)(void);
+ unsigned int est_freq;
printk("calculating r4koff... ");
r4k_offset = cal_r4koff();
