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[ARM] MXC: rework timer/clock initialisation 

- rename mxc_clocks_init to architecture specific versions. This
  allows us to have more than one architecture compiled in.
- call mxc_timer_init from clock initialisation instead from board
  code

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Sascha Hauer 2009-02-16 14:36:49 +01:00
parent a2865197a5
commit 30c730f8f9
13 changed files with 30 additions and 36 deletions
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5
arch/arm/mach-mx1/clock.c
View File

@ -25,6 +25,7 @@
#include <mach/clock.h>
#include <mach/hardware.h>
#include <mach/common.h>
#include "crm_regs.h"
static int _clk_enable(struct clk *clk)
@ -594,7 +595,7 @@ static struct clk *mxc_clks[] = {
&rtc_clk,
};
int __init mxc_clocks_init(unsigned long fref)
int __init mx1_clocks_init(unsigned long fref)
{
struct clk **clkp;
unsigned int reg;
@ -625,5 +626,7 @@ int __init mxc_clocks_init(unsigned long fref)
clk_enable(&hclk);
clk_enable(&fclk);
mxc_timer_init(&gpt_clk);
return 0;
}

3
arch/arm/mach-mx1/mx1ads.c
View File

@ -118,8 +118,7 @@ static void __init mx1ads_init(void)
static void __init mx1ads_timer_init(void)
{
mxc_clocks_init(32000);
mxc_timer_init("gpt_clk");
mx1_clocks_init(32000);
}
struct sys_timer mx1ads_timer = {

5
arch/arm/mach-mx2/clock_imx27.c
View File

@ -1551,7 +1551,7 @@ static void __init probe_mxc_clocks(void)
* must be called very early to get information about the
* available clock rate when the timer framework starts
*/
int __init mxc_clocks_init(unsigned long fref)
int __init mx27_clocks_init(unsigned long fref)
{
u32 cscr;
struct clk **clkp;
@ -1593,5 +1593,8 @@ int __init mxc_clocks_init(unsigned long fref)
#ifdef CONFIG_DEBUG_LL_CONSOLE
clk_enable(&uart1_clk[0]);
#endif
mxc_timer_init(&gpt1_clk[0]);
return 0;
}

3
arch/arm/mach-mx2/mx27ads.c
View File

@ -263,8 +263,7 @@ static void __init mx27ads_timer_init(void)
if ((__raw_readw(PBC_VERSION_REG) & CKIH_27MHZ_BIT_SET) == 0)
fref = 27000000;
mxc_clocks_init(fref);
mxc_timer_init("gpt_clk.0");
mx27_clocks_init(fref);
}
struct sys_timer mx27ads_timer = {

3
arch/arm/mach-mx2/pcm038.c
View File

@ -230,8 +230,7 @@ static void __init pcm038_init(void)
static void __init pcm038_timer_init(void)
{
mxc_clocks_init(26000000);
mxc_timer_init("gpt_clk.0");
mx27_clocks_init(26000000);
}
struct sys_timer pcm038_timer = {

5
arch/arm/mach-mx3/clock.c
View File

@ -25,6 +25,7 @@
#include <linux/io.h>
#include <mach/clock.h>
#include <mach/hardware.h>
#include <mach/common.h>
#include <asm/div64.h>
#include "crm_regs.h"
@ -1071,7 +1072,7 @@ static struct clk *mxc_clks[] = {
&iim_clk,
};
int __init mxc_clocks_init(unsigned long fref)
int __init mx31_clocks_init(unsigned long fref)
{
u32 reg;
struct clk **clkp;
@ -1121,6 +1122,8 @@ int __init mxc_clocks_init(unsigned long fref)
__raw_writel(reg, MXC_CCM_PMCR1);
}
mxc_timer_init(&ipg_clk);
return 0;
}

3
arch/arm/mach-mx3/mx31ads.c
View File

@ -244,8 +244,7 @@ static void __init mxc_board_init(void)
static void __init mx31ads_timer_init(void)
{
mxc_clocks_init(26000000);
mxc_timer_init("ipg_clk.0");
mx31_clocks_init(26000000);
}
struct sys_timer mx31ads_timer = {

3
arch/arm/mach-mx3/mx31lite.c
View File

@ -82,8 +82,7 @@ static void __init mxc_board_init(void)
static void __init mx31lite_timer_init(void)
{
mxc_clocks_init(26000000);
mxc_timer_init("ipg_clk.0");
mx31_clocks_init(26000000);
}
struct sys_timer mx31lite_timer = {

3
arch/arm/mach-mx3/mx31moboard.c
View File

@ -120,8 +120,7 @@ void __init mx31moboard_map_io(void)
static void __init mx31moboard_timer_init(void)
{
mxc_clocks_init(26000000);
mxc_timer_init("ipg_clk.0");
mx31_clocks_init(26000000);
}
struct sys_timer mx31moboard_timer = {

3
arch/arm/mach-mx3/mx31pdk.c
View File

@ -91,8 +91,7 @@ static void __init mxc_board_init(void)
static void __init mx31pdk_timer_init(void)
{
mxc_clocks_init(26000000);
mxc_timer_init("ipg_clk.0");
mx31_clocks_init(26000000);
}
static struct sys_timer mx31pdk_timer = {

3
arch/arm/mach-mx3/pcm037.c
View File

@ -181,8 +181,7 @@ void __init pcm037_map_io(void)
static void __init pcm037_timer_init(void)
{
mxc_clocks_init(26000000);
mxc_timer_init("ipg_clk.0");
mx31_clocks_init(26000000);
}
struct sys_timer pcm037_timer = {

7
arch/arm/plat-mxc/include/mach/common.h
View File

@ -12,11 +12,14 @@
#define __ASM_ARCH_MXC_COMMON_H__
struct platform_device;
struct clk;
extern void mxc_map_io(void);
extern void mxc_init_irq(void);
extern void mxc_timer_init(const char *clk_timer);
extern int mxc_clocks_init(unsigned long fref);
extern void mxc_timer_init(struct clk *timer_clk);
extern int mx1_clocks_init(unsigned long fref);
extern int mx27_clocks_init(unsigned long fref);
extern int mx31_clocks_init(unsigned long fref);
extern int mxc_register_gpios(void);
extern int mxc_register_device(struct platform_device *pdev, void *data);

20
arch/arm/plat-mxc/time.c
View File

@ -34,9 +34,6 @@
static struct clock_event_device clockevent_mxc;
static enum clock_event_mode clockevent_mode = CLOCK_EVT_MODE_UNUSED;
/* clock source for the timer */
static struct clk *timer_clk;
/* clock source */
static cycle_t mxc_get_cycles(void)
@ -53,7 +50,7 @@ static struct clocksource clocksource_mxc = {
.flags = CLOCK_SOURCE_IS_CONTINUOUS,
};
static int __init mxc_clocksource_init(void)
static int __init mxc_clocksource_init(struct clk *timer_clk)
{
unsigned int clock;
@ -177,7 +174,7 @@ static struct clock_event_device clockevent_mxc = {
.rating = 200,
};
static int __init mxc_clockevent_init(void)
static int __init mxc_clockevent_init(struct clk *timer_clk)
{
unsigned int clock;
@ -197,14 +194,8 @@ static int __init mxc_clockevent_init(void)
return 0;
}
void __init mxc_timer_init(const char *clk_timer)
void __init mxc_timer_init(struct clk *timer_clk)
{
timer_clk = clk_get(NULL, clk_timer);
if (!timer_clk) {
printk(KERN_ERR"Cannot determine timer clock. Giving up.\n");
return;
}
clk_enable(timer_clk);
/*
@ -219,10 +210,9 @@ void __init mxc_timer_init(const char *clk_timer)
TIMER_BASE + MXC_TCTL);
/* init and register the timer to the framework */
mxc_clocksource_init();
mxc_clockevent_init();
mxc_clocksource_init(timer_clk);
mxc_clockevent_init(timer_clk);
/* Make irqs happen */
setup_irq(TIMER_INTERRUPT, &mxc_timer_irq);
}