diff options
| author | Sascha Hauer <s.hauer@pengutronix.de> | 2008-07-05 10:02:46 +0200 |
|---|---|---|
| committer | Robert Schwebel <r.schwebel@pengutronix.de> | 2008-07-05 10:02:46 +0200 |
| commit | 38a41fdf94c449c165213e4665c3f8a0d30f8aba (patch) | |
| tree | cde7f6c0da8c9877736a6b66f245e163fa21c2f7 /arch/arm/mach-imx/time.c | |
| parent | dbff4e9ea2e83fda89143389bfb229cb29425a32 (diff) | |
IMX: introduce clock API
This patch introduces the clock API for i.MX and converts all
in-Kernel drivers to use it.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/mach-imx/time.c')
| -rw-r--r-- | arch/arm/mach-imx/time.c | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/arch/arm/mach-imx/time.c b/arch/arm/mach-imx/time.c index d86d124aea2..5a41e96e858 100644 --- a/arch/arm/mach-imx/time.c +++ b/arch/arm/mach-imx/time.c @@ -17,6 +17,7 @@ #include <linux/time.h> #include <linux/clocksource.h> #include <linux/clockchips.h> +#include <linux/clk.h> #include <asm/hardware.h> #include <asm/io.h> @@ -86,10 +87,10 @@ static struct clocksource clocksource_imx = { .flags = CLOCK_SOURCE_IS_CONTINUOUS, }; -static int __init imx_clocksource_init(void) +static int __init imx_clocksource_init(unsigned long rate) { clocksource_imx.mult = - clocksource_hz2mult(imx_get_perclk1(), clocksource_imx.shift); + clocksource_hz2mult(rate, clocksource_imx.shift); clocksource_register(&clocksource_imx); return 0; @@ -174,9 +175,9 @@ static struct clock_event_device clockevent_imx = { .rating = 200, }; -static int __init imx_clockevent_init(void) +static int __init imx_clockevent_init(unsigned long rate) { - clockevent_imx.mult = div_sc(imx_get_perclk1(), NSEC_PER_SEC, + clockevent_imx.mult = div_sc(rate, NSEC_PER_SEC, clockevent_imx.shift); clockevent_imx.max_delta_ns = clockevent_delta2ns(0xfffffffe, &clockevent_imx); @@ -190,13 +191,23 @@ static int __init imx_clockevent_init(void) return 0; } +extern int imx_clocks_init(void); static void __init imx_timer_init(void) { + struct clk *clk; + unsigned long rate; + + imx_clocks_init(); + + clk = clk_get(NULL, "perclk1"); + clk_enable(clk); + rate = clk_get_rate(clk); + imx_timer_hardware_init(); - imx_clocksource_init(); + imx_clocksource_init(rate); - imx_clockevent_init(); + imx_clockevent_init(rate); /* * Make irqs happen for the system timer |