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ARM: mxs: retrieve timer irq from device tree

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Rather than using the static timer irq definition, we should retrieve
timer irq from device tree for better.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
This commit is contained in:
Shawn Guo 2012-08-20 08:51:45 +08:00
parent 0b76c54121
commit eeca6e6040
6 changed files with 19 additions and 6 deletions
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3
arch/arm/boot/dts/imx23.dtsi
View File

@ -389,8 +389,9 @@
};
timrot@80068000 {
compatible = "fsl,imx23-timrot", "fsl,timrot";
reg = <0x80068000 0x2000>;
status = "disabled";
interrupts = <28 29 30 31>;
};
auart0: serial@8006c000 {

3
arch/arm/boot/dts/imx28.dtsi
View File

@ -683,8 +683,9 @@
};
timrot@80068000 {
compatible = "fsl,imx28-timrot", "fsl,timrot";
reg = <0x80068000 0x2000>;
status = "disabled";
interrupts = <48 49 50 51>;
};
auart0: serial@8006a000 {

2
arch/arm/mach-mxs/include/mach/common.h
View File

@ -13,7 +13,7 @@
extern const u32 *mxs_get_ocotp(void);
extern int mxs_reset_block(void __iomem *);
extern void mxs_timer_init(int);
extern void mxs_timer_init(void);
extern void mxs_restart(char, const char *);
extern int mxs_saif_clkmux_select(unsigned int clkmux);

13
arch/arm/mach-mxs/timer.c
View File

@ -25,6 +25,8 @@
#include <linux/irq.h>
#include <linux/clockchips.h>
#include <linux/clk.h>
#include <linux/of.h>
#include <linux/of_irq.h>
#include <asm/mach/time.h>
#include <mach/mxs.h>
@ -244,9 +246,17 @@ static int __init mxs_clocksource_init(struct clk *timer_clk)
return 0;
}
void __init mxs_timer_init(int irq)
void __init mxs_timer_init(void)
{
struct device_node *np;
struct clk *timer_clk;
int irq;
np = of_find_compatible_node(NULL, NULL, "fsl,timrot");
if (!np) {
pr_err("%s: failed find timrot node\n", __func__);
return;
}
timer_clk = clk_get_sys("timrot", NULL);
if (IS_ERR(timer_clk)) {
@ -295,5 +305,6 @@ void __init mxs_timer_init(int irq)
mxs_clockevent_init(timer_clk);
/* Make irqs happen */
irq = irq_of_parse_and_map(np, 0);
setup_irq(irq, &mxs_timer_irq);
}

2
drivers/clk/mxs/clk-imx23.c
View File

@ -200,7 +200,7 @@ int __init mx23_clocks_init(void)
for (i = 0; i < ARRAY_SIZE(clks_init_on); i++)
clk_prepare_enable(clks[clks_init_on[i]]);
mxs_timer_init(MX23_INT_TIMER0);
mxs_timer_init();
return 0;
}

2
drivers/clk/mxs/clk-imx28.c
View File

@ -337,7 +337,7 @@ int __init mx28_clocks_init(void)
for (i = 0; i < ARRAY_SIZE(clks_init_on); i++)
clk_prepare_enable(clks[clks_init_on[i]]);
mxs_timer_init(MX28_INT_TIMER0);
mxs_timer_init();
return 0;
}