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imx233: rewrite timrot using new register headers

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Change-Id: Ia6dc7ac7e1fdf471a518111f5593bd96bc3acfac
This commit is contained in:
Amaury Pouly 2013-06-16 18:03:10 +02:00
parent 96b1d02b05
commit 852a82b90a
4 changed files with 18 additions and 54 deletions
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2
firmware/target/arm/imx233/kernel-imx233.c
View file

@ -33,7 +33,7 @@ void tick_start(unsigned int interval_in_ms)
{
/* use the 1-kHz XTAL clock source */
imx233_setup_timer(TICK_TIMER_NR, true, interval_in_ms,
HW_TIMROT_TIMCTRL__SELECT_1KHZ_XTAL, HW_TIMROT_TIMCTRL__PRESCALE_1,
BV_TIMROT_TIMCTRLn_SELECT__1KHZ_XTAL, BV_TIMROT_TIMCTRLn_PRESCALE__DIV_BY_1,
false, &tick_timer);
}

6
firmware/target/arm/imx233/timer-imx233.c
View file

@ -58,13 +58,13 @@ bool timer_set(long cycles, bool start)
bool timer_start(IF_COP_VOID(int core))
{
imx233_setup_timer(USER_TIMER_NR, true, timer_cycles,
HW_TIMROT_TIMCTRL__SELECT_32KHZ_XTAL, HW_TIMROT_TIMCTRL__PRESCALE_1,
BV_TIMROT_TIMCTRLn_SELECT__32KHZ_XTAL, BV_TIMROT_TIMCTRLn_PRESCALE__DIV_BY_1,
false, &timer_fn);
return true;
}
void timer_stop(void)
{
imx233_setup_timer(USER_TIMER_NR, false, 0, HW_TIMROT_TIMCTRL__SELECT_NEVER_TICK,
HW_TIMROT_TIMCTRL__PRESCALE_1, false, NULL);
imx233_setup_timer(USER_TIMER_NR, false, 0, BV_TIMROT_TIMCTRLn_SELECT__NEVER_TICK,
BV_TIMROT_TIMCTRLn_PRESCALE__DIV_BY_1, false, NULL);
}

33
firmware/target/arm/imx233/timrot-imx233.c
View file

@ -28,7 +28,7 @@ void INT_TIMER##nr(void) \
{ \
if(timer_fns[nr]) \
timer_fns[nr](); \
__REG_CLR(HW_TIMROT_TIMCTRL(nr)) = HW_TIMROT_TIMCTRL__IRQ; \
BF_CLRn(TIMROT_TIMCTRLn, nr, IRQ); \
}
define_timer_irq(0)
@ -40,33 +40,20 @@ void imx233_setup_timer(unsigned timer_nr, bool reload, unsigned count,
unsigned src, unsigned prescale, bool polarity, imx233_timer_fn_t fn)
{
int oldstatus = disable_interrupt_save(IRQ_FIQ_STATUS);
/* only enable interrupt if function is set */
bool irq = fn != NULL;
timer_fns[timer_nr] = fn;
HW_TIMROT_TIMCTRL(timer_nr) = src | prescale;
if(polarity)
__REG_SET(HW_TIMROT_TIMCTRL(timer_nr)) = HW_TIMROT_TIMCTRL__POLARITY;
if(reload)
{
__REG_SET(HW_TIMROT_TIMCTRL(timer_nr)) = HW_TIMROT_TIMCTRL__RELOAD;
HW_TIMROT_TIMCTRLn(timer_nr) = BF_OR6(TIMROT_TIMCTRLn, SELECT(src),
PRESCALE(prescale), POLARITY(polarity), RELOAD(reload), IRQ(irq),
IRQ_EN(irq));
/* manual says count - 1 for reload timers */
HW_TIMROT_TIMCOUNT(timer_nr) = count - 1;
}
else
HW_TIMROT_TIMCOUNT(timer_nr) = count;
/* only enable interrupt if function is set */
if(fn != NULL)
{
/* enable interrupt */
imx233_icoll_enable_interrupt(INT_SRC_TIMER(timer_nr), true);
/* clear irq bit and enable */
__REG_CLR(HW_TIMROT_TIMCTRL(timer_nr)) = HW_TIMROT_TIMCTRL__IRQ;
__REG_SET(HW_TIMROT_TIMCTRL(timer_nr)) = HW_TIMROT_TIMCTRL__IRQ_EN;
}
else
imx233_icoll_enable_interrupt(INT_SRC_TIMER(timer_nr), false);
HW_TIMROT_TIMCOUNTn(timer_nr) = reload ? count - 1 : reload;
imx233_icoll_enable_interrupt(INT_SRC_TIMER(timer_nr), irq);
/* finally update */
__REG_SET(HW_TIMROT_TIMCTRL(timer_nr)) = HW_TIMROT_TIMCTRL__UPDATE;
BF_SETn(TIMROT_TIMCTRLn, timer_nr, UPDATE);
restore_interrupt(oldstatus);
}

25
firmware/target/arm/imx233/timrot-imx233.h
View file

@ -24,30 +24,7 @@
#include "system.h"
#include "cpu.h"
#define HW_TIMROT_BASE 0x80068000
#define HW_TIMROT_ROTCTRL (*(volatile uint32_t *)(HW_TIMROT_BASE + 0x0))
#define HW_TIMROT_ROTCOUNT (*(volatile uint32_t *)(HW_TIMROT_BASE + 0x10))
#define HW_TIMROT_TIMCTRL(i) (*(volatile uint32_t *)(HW_TIMROT_BASE + 0x20 + (i) * 0x20))
#define HW_TIMROT_TIMCTRL__IRQ (1 << 15)
#define HW_TIMROT_TIMCTRL__IRQ_EN (1 << 14)
#define HW_TIMROT_TIMCTRL__POLARITY (1 << 8)
#define HW_TIMROT_TIMCTRL__UPDATE (1 << 7)
#define HW_TIMROT_TIMCTRL__RELOAD (1 << 6)
#define HW_TIMROT_TIMCTRL__PRESCALE_1 (0 << 4)
#define HW_TIMROT_TIMCTRL__PRESCALE_2 (1 << 4)
#define HW_TIMROT_TIMCTRL__PRESCALE_4 (2 << 4)
#define HW_TIMROT_TIMCTRL__PRESCALE_8 (3 << 4)
#define HW_TIMROT_TIMCTRL__SELECT_NEVER_TICK 0
#define HW_TIMROT_TIMCTRL__SELECT_32KHZ_XTAL 8
#define HW_TIMROT_TIMCTRL__SELECT_8KHZ_XTAL 9
#define HW_TIMROT_TIMCTRL__SELECT_4KHZ_XTAL 10
#define HW_TIMROT_TIMCTRL__SELECT_1KHZ_XTAL 11
#define HW_TIMROT_TIMCTRL__SELECT_TICK_ALWAYS 12
#define HW_TIMROT_TIMCOUNT(i) (*(volatile uint32_t *)(HW_TIMROT_BASE + 0x30 + (i) * 0x20))
#include "regs/regs-timrot.h"
typedef void (*imx233_timer_fn_t)(void);