diff options
Diffstat (limited to 'arch/arm/mach-s3c2440/fiq_c_isr.c')
| -rw-r--r-- | arch/arm/mach-s3c2440/fiq_c_isr.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/arch/arm/mach-s3c2440/fiq_c_isr.c b/arch/arm/mach-s3c2440/fiq_c_isr.c index a71a234d86c..38692fcebf2 100644 --- a/arch/arm/mach-s3c2440/fiq_c_isr.c +++ b/arch/arm/mach-s3c2440/fiq_c_isr.c @@ -79,6 +79,7 @@ u16 _fiq_timer_divisor; */ extern void __attribute__ ((naked)) s3c2440_fiq_isr(void); + /* this is copied into the hard FIQ vector during init */ static void __attribute__ ((naked)) s3c2440_FIQ_Branch(void) @@ -128,7 +129,7 @@ static int fiq_init_irq_source(int irq_index_fiq) _fiq_irq = irq_index_fiq; _fiq_ack_mask = 1 << (irq_index_fiq - S3C2410_CPUIRQ_OFFSET); - timer_index = (irq_index_fiq - IRQ_TIMER0); + _fiq_timer_index = (irq_index_fiq - IRQ_TIMER0); /* set up the timer to operate as a pwm device */ @@ -136,12 +137,11 @@ static int fiq_init_irq_source(int irq_index_fiq) if (rc) goto bail; - pwm_timer_fiq.timerid = PWM0 + timer_index; + pwm_timer_fiq.timerid = PWM0 + _fiq_timer_index; pwm_timer_fiq.prescaler = (6 - 1) / 2; pwm_timer_fiq.divider = S3C2410_TCFG1_MUX3_DIV2; /* default rate == ~32us */ - pwm_timer_fiq.counter = pwm_timer_fiq.comparer = - timer_divisor = 64; + pwm_timer_fiq.counter = pwm_timer_fiq.comparer = 3000; rc = s3c2410_pwm_enable(&pwm_timer_fiq); if (rc) @@ -149,6 +149,8 @@ static int fiq_init_irq_source(int irq_index_fiq) s3c2410_pwm_start(&pwm_timer_fiq); + _fiq_timer_divisor = 0xffff; /* so kick will work initially */ + /* let our selected interrupt be a magic FIQ interrupt */ __raw_writel(_fiq_ack_mask, S3C2410_INTMOD); @@ -189,7 +191,7 @@ void fiq_kick(void) S3C2410_INTMSK); tcon = __raw_readl(S3C2410_TCON) & ~S3C2410_TCON_T3START; /* fake the timer to a count of 1 */ - __raw_writel(1, S3C2410_TCNTB(timer_index)); + __raw_writel(1, S3C2410_TCNTB(_fiq_timer_index)); __raw_writel(tcon | S3C2410_TCON_T3MANUALUPD, S3C2410_TCON); __raw_writel(tcon | S3C2410_TCON_T3MANUALUPD | S3C2410_TCON_T3START, S3C2410_TCON); @@ -207,6 +209,7 @@ static int __init sc32440_fiq_probe(struct platform_device *pdev) if (!r) return -EIO; + /* configure for the interrupt we are meant to use */ printk(KERN_INFO"Enabling FIQ using irq %d\n", r->start); |