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OMAP2+: clockevent: set up GPTIMER clockevent hwmod right before timer init

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Set up the GPTIMER hwmod used for the clockevent source immediately
before it is used.  This avoids the need to set up all of the hwmods
until the boot process is further along.  (In general, we want to defer
as much as possible until late in the boot process.)

This second version fixes a bug pointed out by Santosh Shilimkar
<santosh.shilimkar@ti.com>, that would cause the kernel to use an
incorrect timer hwmod name if the selected GPTIMER was not 1 or 12 -
thanks Santosh.  Also, Tarun Kanti DebBarma <tarun.kanti@ti.com>
pointed out that the original patch did not apply cleanly; this has
now been fixed.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Benoît Cousson <b-cousson@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Kevin Hilman <khilman@ti.com>
Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Tarun Kanti DebBarma <tarun.kanti@ti.com>
This commit is contained in:
Paul Walmsley 2011-02-23 00:14:08 -07:00
parent a2debdbd1a
commit 38698bef54
1 changed files with 6 additions and 1 deletions
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7
arch/arm/mach-omap2/timer-gp.c
View file

@ -39,10 +39,11 @@
#include <asm/mach/time.h>
#include <plat/dmtimer.h>
#include <asm/localtimer.h>
#include <plat/common.h>
#include <plat/omap_hwmod.h>
#include "timer-gp.h"
#include <plat/common.h>
/* MAX_GPTIMER_ID: number of GPTIMERs on the chip */
#define MAX_GPTIMER_ID 12
@ -132,9 +133,13 @@ static void __init omap2_gp_clockevent_init(void)
{
u32 tick_rate;
int src;
char clockevent_hwmod_name[8]; /* 8 = sizeof("timerXX0") */
inited = 1;
sprintf(clockevent_hwmod_name, "timer%d", gptimer_id);
omap_hwmod_setup_one(clockevent_hwmod_name);
gptimer = omap_dm_timer_request_specific(gptimer_id);
BUG_ON(gptimer == NULL);
gptimer_wakeup = gptimer;