diff options
Diffstat (limited to 'arch/arm/mach-s3c2440/mach-gta02.c')
| -rw-r--r-- | arch/arm/mach-s3c2440/mach-gta02.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c2440/mach-gta02.c b/arch/arm/mach-s3c2440/mach-gta02.c index cb839b24b6d..8c7bbe733d9 100644 --- a/arch/arm/mach-s3c2440/mach-gta02.c +++ b/arch/arm/mach-s3c2440/mach-gta02.c @@ -95,12 +95,50 @@ static spinlock_t motion_irq_lock; struct fiq_ipc fiq_ipc; EXPORT_SYMBOL(fiq_ipc); +#define DIVISOR_FROM_US(x) ((x) << 1) + +#define FIQ_DIVISOR_VIBRATOR DIVISOR_FROM_US(100) + /* define FIQ ISR */ FIQ_HANDLER_START() /* define your locals here -- no initializers though */ + u16 divisor; FIQ_HANDLER_ENTRY(256, 512) /* Your ISR here :-) */ + divisor = 0xffff; + + /* Vibrator servicing */ + + if (fiq_ipc.vib_pwm_latched || fiq_ipc.vib_pwm) { /* not idle */ + if (((u8)_fiq_count_fiqs) == fiq_ipc.vib_pwm_latched) + s3c2410_gpio_setpin(fiq_ipc.vib_gpio_pin, 0); + if (((u8)_fiq_count_fiqs) == 0) { + fiq_ipc.vib_pwm_latched = fiq_ipc.vib_pwm; + if (fiq_ipc.vib_pwm_latched) + s3c2410_gpio_setpin(fiq_ipc.vib_gpio_pin, 1); + } + divisor = FIQ_DIVISOR_VIBRATOR; + } + + /* TODO: HDQ servicing */ + + + + /* disable further timer interrupts if nobody has any work + * or adjust rate according to who still has work + * + * CAUTION: it means forground code must disable FIQ around + * its own non-atomic S3C2410_INTMSK changes... not common + * thankfully and taken care of by the fiq-basis patch + */ + if (divisor == 0xffff) /* mask the fiq irq source */ + __raw_writel(__raw_readl(S3C2410_INTMSK) | _fiq_ack_mask, + S3C2410_INTMSK); + else /* still working, maybe at a different rate */ + __raw_writel(divisor, S3C2410_TCNTB(_fiq_timer_index)); + _fiq_timer_divisor = divisor; + FIQ_HANDLER_END() |