static int aic5_irq_domain_xlate(struct irq_domain *d,
struct device_node *ctrlr,
const u32 *intspec, unsigned int intsize,
irq_hw_number_t *out_hwirq,
unsigned int *out_type)
{
struct irq_chip_generic *bgc = irq_get_domain_generic_chip(d, 0);
unsigned long flags;
unsigned smr;
int ret;
if (!bgc)
return -EINVAL;
ret = aic_common_irq_domain_xlate(d, ctrlr, intspec, intsize,
out_hwirq, out_type);
if (ret)
return ret;
irq_gc_lock_irqsave(bgc, flags);
irq_reg_writel(bgc, *out_hwirq, AT91_AIC5_SSR);
smr = irq_reg_readl(bgc, AT91_AIC5_SMR);
ret = aic_common_set_priority(intspec[2], &smr);
if (!ret)
irq_reg_writel(bgc, intspec[2] | smr, AT91_AIC5_SMR);
irq_gc_unlock_irqrestore(bgc, flags);
return ret;
}
static int aic5_irq_domain_xlate(struct irq_domain *d,
struct device_node *ctrlr,
const u32 *intspec, unsigned int intsize,
irq_hw_number_t *out_hwirq,
unsigned int *out_type)
{
struct irq_domain_chip_generic *dgc = d->gc;
struct irq_chip_generic *gc;
unsigned smr;
int ret;
if (!dgc)
return -EINVAL;
ret = aic_common_irq_domain_xlate(d, ctrlr, intspec, intsize,
out_hwirq, out_type);
if (ret)
return ret;
gc = dgc->gc[0];
irq_gc_lock(gc);
irq_reg_writel(*out_hwirq, gc->reg_base + AT91_AIC5_SSR);
smr = irq_reg_readl(gc->reg_base + AT91_AIC5_SMR);
ret = aic_common_set_priority(intspec[2], &smr);
if (!ret)
irq_reg_writel(intspec[2] | smr, gc->reg_base + AT91_AIC5_SMR);
irq_gc_unlock(gc);
return ret;
}
static void aic_resume(struct irq_data *d)
{
struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
irq_gc_lock(gc);
irq_reg_writel(gc, gc->wake_active, AT91_AIC_IDCR);
irq_reg_writel(gc, gc->mask_cache, AT91_AIC_IECR);
irq_gc_unlock(gc);
}
static void aic_pm_shutdown(struct irq_data *d)
{
struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
irq_gc_lock(gc);
irq_reg_writel(gc, 0xffffffff, AT91_AIC_IDCR);
irq_reg_writel(gc, 0xffffffff, AT91_AIC_ICCR);
irq_gc_unlock(gc);
}
static int aic5_retrigger(struct irq_data *d)
{
struct irq_domain *domain = d->domain;
struct irq_chip_generic *bgc = irq_get_domain_generic_chip(domain, 0);
/* Enable interrupt on AIC5 */
irq_gc_lock(bgc);
irq_reg_writel(bgc, d->hwirq, AT91_AIC5_SSR);
irq_reg_writel(bgc, 1, AT91_AIC5_ISCR);
irq_gc_unlock(bgc);
return 0;
}
static void aic5_mask(struct irq_data *d)
{
struct irq_domain *domain = d->domain;
struct irq_domain_chip_generic *dgc = domain->gc;
struct irq_chip_generic *gc = dgc->gc[0];
/* Disable interrupt on AIC5 */
irq_gc_lock(gc);
irq_reg_writel(d->hwirq, gc->reg_base + AT91_AIC5_SSR);
irq_reg_writel(1, gc->reg_base + AT91_AIC5_IDCR);
gc->mask_cache &= ~d->mask;
irq_gc_unlock(gc);
}
static int aic5_retrigger(struct irq_data *d)
{
struct irq_domain *domain = d->domain;
struct irq_domain_chip_generic *dgc = domain->gc;
struct irq_chip_generic *gc = dgc->gc[0];
/* Enable interrupt on AIC5 */
irq_gc_lock(gc);
irq_reg_writel(d->hwirq, gc->reg_base + AT91_AIC5_SSR);
irq_reg_writel(1, gc->reg_base + AT91_AIC5_ISCR);
irq_gc_unlock(gc);
return 0;
}
/* We assume the IRQ_TIMER0..IRQ_TIMER4 range is continuous. */
static void s3c_irq_timer_ack(struct irq_data *d)
{
struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
u32 mask = (1 << 5) << (d->irq - gc->irq_base);
irq_reg_writel(mask | gc->mask_cache, gc->reg_base);
}
static int aic_irq_domain_xlate(struct irq_domain *d,
struct device_node *ctrlr,
const u32 *intspec, unsigned int intsize,
irq_hw_number_t *out_hwirq,
unsigned int *out_type)
{
struct irq_domain_chip_generic *dgc = d->gc;
struct irq_chip_generic *gc;
unsigned smr;
int idx;
int ret;
if (!dgc)
return -EINVAL;
ret = aic_common_irq_domain_xlate(d, ctrlr, intspec, intsize,
out_hwirq, out_type);
if (ret)
return ret;
idx = intspec[0] / dgc->irqs_per_chip;
if (idx >= dgc->num_chips)
return -EINVAL;
gc = dgc->gc[idx];
irq_gc_lock(gc);
smr = irq_reg_readl(gc, AT91_AIC_SMR(*out_hwirq));
ret = aic_common_set_priority(intspec[2], &smr);
if (!ret)
irq_reg_writel(gc, smr, AT91_AIC_SMR(*out_hwirq));
irq_gc_unlock(gc);
return ret;
}
static void aic5_pm_shutdown(struct irq_data *d)
{
struct irq_domain *domain = d->domain;
struct irq_domain_chip_generic *dgc = domain->gc;
struct irq_chip_generic *bgc = irq_get_domain_generic_chip(domain, 0);
struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
int i;
irq_gc_lock(bgc);
for (i = 0; i < dgc->irqs_per_chip; i++) {
irq_reg_writel(bgc, i + gc->irq_base, AT91_AIC5_SSR);
irq_reg_writel(bgc, 1, AT91_AIC5_IDCR);
irq_reg_writel(bgc, 1, AT91_AIC5_ICCR);
}
irq_gc_unlock(bgc);
}
static void aic5_mask(struct irq_data *d)
{
struct irq_domain *domain = d->domain;
struct irq_chip_generic *bgc = irq_get_domain_generic_chip(domain, 0);
struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
/*
* Disable interrupt on AIC5. We always take the lock of the
* first irq chip as all chips share the same registers.
*/
irq_gc_lock(bgc);
irq_reg_writel(gc, d->hwirq, AT91_AIC5_SSR);
irq_reg_writel(gc, 1, AT91_AIC5_IDCR);
gc->mask_cache &= ~d->mask;
irq_gc_unlock(bgc);
}
static int aic5_set_type(struct irq_data *d, unsigned type)
{
struct irq_domain *domain = d->domain;
struct irq_chip_generic *bgc = irq_get_domain_generic_chip(domain, 0);
unsigned int smr;
int ret;
irq_gc_lock(bgc);
irq_reg_writel(bgc, d->hwirq, AT91_AIC5_SSR);
smr = irq_reg_readl(bgc, AT91_AIC5_SMR);
ret = aic_common_set_type(d, type, &smr);
if (!ret)
irq_reg_writel(bgc, smr, AT91_AIC5_SMR);
irq_gc_unlock(bgc);
return ret;
}
static void __init aic5_hw_init(struct irq_domain *domain)
{
struct irq_chip_generic *gc = irq_get_domain_generic_chip(domain, 0);
int i;
/*
* Perform 8 End Of Interrupt Command to make sure AIC
* will not Lock out nIRQ
*/
for (i = 0; i < 8; i++)
irq_reg_writel(0, gc->reg_base + AT91_AIC5_EOICR);
/*
* Spurious Interrupt ID in Spurious Vector Register.
* When there is no current interrupt, the IRQ Vector Register
* reads the value stored in AIC_SPU
*/
irq_reg_writel(0xffffffff, gc->reg_base + AT91_AIC5_SPU);
/* No debugging in AIC: Debug (Protect) Control Register */
irq_reg_writel(0, gc->reg_base + AT91_AIC5_DCR);
/* Disable and clear all interrupts initially */
for (i = 0; i < domain->revmap_size; i++) {
irq_reg_writel(i, gc->reg_base + AT91_AIC5_SSR);
irq_reg_writel(i, gc->reg_base + AT91_AIC5_SVR);
irq_reg_writel(1, gc->reg_base + AT91_AIC5_IDCR);
irq_reg_writel(1, gc->reg_base + AT91_AIC5_ICCR);
}
}
static int aic5_set_type(struct irq_data *d, unsigned type)
{
struct irq_domain *domain = d->domain;
struct irq_domain_chip_generic *dgc = domain->gc;
struct irq_chip_generic *gc = dgc->gc[0];
unsigned int smr;
int ret;
irq_gc_lock(gc);
irq_reg_writel(d->hwirq, gc->reg_base + AT91_AIC5_SSR);
smr = irq_reg_readl(gc->reg_base + AT91_AIC5_SMR);
ret = aic_common_set_type(d, type, &smr);
if (!ret)
irq_reg_writel(smr, gc->reg_base + AT91_AIC5_SMR);
irq_gc_unlock(gc);
return ret;
}
static int aic_retrigger(struct irq_data *d)
{
struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
/* Enable interrupt on AIC5 */
irq_gc_lock(gc);
irq_reg_writel(gc, d->mask, AT91_AIC_ISCR);
irq_gc_unlock(gc);
return 0;
}
static void aic5_resume(struct irq_data *d)
{
struct irq_domain *domain = d->domain;
struct irq_domain_chip_generic *dgc = domain->gc;
struct irq_chip_generic *bgc = irq_get_domain_generic_chip(domain, 0);
struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
int i;
u32 mask;
irq_gc_lock(bgc);
for (i = 0; i < dgc->irqs_per_chip; i++) {
mask = 1 << i;
if ((mask & gc->mask_cache) == (mask & gc->wake_active))
continue;
irq_reg_writel(bgc, i + gc->irq_base, AT91_AIC5_SSR);
if (mask & gc->mask_cache)
irq_reg_writel(bgc, 1, AT91_AIC5_IECR);
else
irq_reg_writel(bgc, 1, AT91_AIC5_IDCR);
}
irq_gc_unlock(bgc);
}
static int aic_set_type(struct irq_data *d, unsigned type)
{
struct irq_chip_generic *gc = irq_data_get_irq_chip_data(d);
unsigned int smr;
int ret;
smr = irq_reg_readl(gc, AT91_AIC_SMR(d->hwirq));
ret = aic_common_set_type(d, type, &smr);
if (ret)
return ret;
irq_reg_writel(gc, smr, AT91_AIC_SMR(d->hwirq));
return 0;
}
static asmlinkage void __exception_irq_entry
aic5_handle(struct pt_regs *regs)
{
struct irq_chip_generic *bgc = irq_get_domain_generic_chip(aic5_domain, 0);
u32 irqnr;
u32 irqstat;
irqnr = irq_reg_readl(bgc, AT91_AIC5_IVR);
irqstat = irq_reg_readl(bgc, AT91_AIC5_ISR);
if (!irqstat)
irq_reg_writel(bgc, 0, AT91_AIC5_EOICR);
else
handle_domain_irq(aic5_domain, irqnr, regs);
}
static asmlinkage void __exception_irq_entry
aic_handle(struct pt_regs *regs)
{
struct irq_domain_chip_generic *dgc = aic_domain->gc;
struct irq_chip_generic *gc = dgc->gc[0];
u32 irqnr;
u32 irqstat;
irqnr = irq_reg_readl(gc, AT91_AIC_IVR);
irqstat = irq_reg_readl(gc, AT91_AIC_ISR);
if (!irqstat)
irq_reg_writel(gc, 0, AT91_AIC_EOICR);
else
handle_domain_irq(aic_domain, irqnr, regs);
}
static asmlinkage void __exception_irq_entry
aic5_handle(struct pt_regs *regs)
{
struct irq_domain_chip_generic *dgc = aic5_domain->gc;
struct irq_chip_generic *gc = dgc->gc[0];
u32 irqnr;
u32 irqstat;
irqnr = irq_reg_readl(gc->reg_base + AT91_AIC5_IVR);
irqstat = irq_reg_readl(gc->reg_base + AT91_AIC5_ISR);
irqnr = irq_find_mapping(aic5_domain, irqnr);
if (!irqstat)
irq_reg_writel(0, gc->reg_base + AT91_AIC5_EOICR);
else
handle_IRQ(irqnr, regs);
}
static inline void ab_irqctl_writereg(struct irq_chip_generic *gc, u32 reg,
u32 val)
{
irq_reg_writel(val, gc->reg_base + reg);
}
