Let's set up things ready for enabling sparse IRQ and remove the
omap_read/write usage.
Cc: Aaro Koskinen <aaro.koskinen@xxxxxx>
Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>
---
arch/arm/mach-omap1/irq.c | 118 +++++++++++++++++++++++-----------------------
1 file changed, 60 insertions(+), 58 deletions(-)
diff --git a/arch/arm/mach-omap1/irq.c b/arch/arm/mach-omap1/irq.c
index a8a533d..3651b17 100644
--- a/arch/arm/mach-omap1/irq.c
+++ b/arch/arm/mach-omap1/irq.c
@@ -56,6 +56,7 @@
struct omap_irq_bank {
unsigned long base_reg;
+ void __iomem *va;
unsigned long trigger_map;
unsigned long wake_enable;
};
@@ -63,59 +64,33 @@ struct omap_irq_bank {
u32 omap_irq_flags;
static unsigned int irq_bank_count;
static struct omap_irq_bank *irq_banks;
+static struct irq_domain *domain;
-static inline void irq_bank_writel(unsigned long value, int bank, int offset)
+static inline unsigned int irq_bank_readl(int bank, int offset)
{
- omap_writel(value, irq_banks[bank].base_reg + offset);
+ return readl_relaxed(irq_banks[bank].va + offset);
}
-
-static void omap_ack_irq(struct irq_data *d)
-{
- if (d->irq > 31)
- omap_writel(0x1, OMAP_IH2_BASE + IRQ_CONTROL_REG_OFFSET);
-
- omap_writel(0x1, OMAP_IH1_BASE + IRQ_CONTROL_REG_OFFSET);
-}
-
-static void omap_mask_irq(struct irq_data *d)
+static inline void irq_bank_writel(unsigned long value, int bank, int offset)
{
- int bank = IRQ_BANK(d->irq);
- u32 l;
-
- l = omap_readl(irq_banks[bank].base_reg + IRQ_MIR_REG_OFFSET);
- l |= 1 << IRQ_BIT(d->irq);
- omap_writel(l, irq_banks[bank].base_reg + IRQ_MIR_REG_OFFSET);
+ writel_relaxed(value, irq_banks[bank].va + offset);
}
-static void omap_unmask_irq(struct irq_data *d)
+static void omap_ack_irq(int irq)
{
- int bank = IRQ_BANK(d->irq);
- u32 l;
+ if (irq > 31)
+ writel_relaxed(0x1, irq_banks[1].va + IRQ_CONTROL_REG_OFFSET);
- l = omap_readl(irq_banks[bank].base_reg + IRQ_MIR_REG_OFFSET);
- l &= ~(1 << IRQ_BIT(d->irq));
- omap_writel(l, irq_banks[bank].base_reg + IRQ_MIR_REG_OFFSET);
+ writel_relaxed(0x1, irq_banks[0].va + IRQ_CONTROL_REG_OFFSET);
}
static void omap_mask_ack_irq(struct irq_data *d)
{
- omap_mask_irq(d);
- omap_ack_irq(d);
-}
-
-static int omap_wake_irq(struct irq_data *d, unsigned int enable)
-{
- int bank = IRQ_BANK(d->irq);
+ struct irq_chip_type *ct = irq_data_get_chip_type(d);
- if (enable)
- irq_banks[bank].wake_enable |= IRQ_BIT(d->irq);
- else
- irq_banks[bank].wake_enable &= ~IRQ_BIT(d->irq);
-
- return 0;
+ ct->chip.irq_mask(d);
+ omap_ack_irq(d->irq);
}
-
/*
* Allows tuning the IRQ type and priority
*
@@ -165,17 +140,30 @@ static struct omap_irq_bank omap1610_irq_banks[] = {
};
#endif
-static struct irq_chip omap_irq_chip = {
- .name = "MPU",
- .irq_ack = omap_mask_ack_irq,
- .irq_mask = omap_mask_irq,
- .irq_unmask = omap_unmask_irq,
- .irq_set_wake = omap_wake_irq,
-};
+static __init void
+omap_alloc_gc(void __iomem *base, unsigned int irq_start, unsigned int num)
+{
+ struct irq_chip_generic *gc;
+ struct irq_chip_type *ct;
+
+ gc = irq_alloc_generic_chip("MPU", 1, irq_start, base,
+ handle_level_irq);
+ ct = gc->chip_types;
+ ct->chip.irq_ack = omap_mask_ack_irq;
+ ct->chip.irq_mask = irq_gc_mask_set_bit;
+ ct->chip.irq_unmask = irq_gc_mask_clr_bit;
+ ct->chip.irq_set_wake = irq_gc_set_wake;
+ ct->regs.mask = IRQ_MIR_REG_OFFSET;
+ irq_setup_generic_chip(gc, IRQ_MSK(num), IRQ_GC_INIT_MASK_CACHE,
+ IRQ_NOREQUEST | IRQ_NOPROBE, 0);
+}
void __init omap1_init_irq(void)
{
- int i, j;
+ struct irq_chip_type *ct;
+ struct irq_data *d = NULL;
+ int i, j, irq_base;
+ unsigned long nr_irqs;
#if defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850)
if (cpu_is_omap7xx()) {
@@ -203,8 +191,26 @@ void __init omap1_init_irq(void)
irq_bank_count = ARRAY_SIZE(omap1610_irq_banks);
}
#endif
- printk("Total of %i interrupts in %i interrupt banks\n",
- irq_bank_count * 32, irq_bank_count);
+
+ for (i = 0; i < irq_bank_count; i++) {
+ irq_banks[i].va = ioremap(irq_banks[i].base_reg, 0xff);
+ if (WARN_ON(!irq_banks[i].va))
+ return;
+ }
+
+ nr_irqs = irq_bank_count * 32;
+
+ irq_base = irq_alloc_descs(-1, 0, nr_irqs, 0);
+ if (irq_base < 0) {
+ pr_warn("Couldn't allocate IRQ numbers\n");
+ irq_base = 0;
+ }
+
+ domain = irq_domain_add_legacy(NULL, nr_irqs, irq_base, 0,
+ &irq_domain_simple_ops, NULL);
+
+ pr_info("Total of %lu interrupts in %i interrupt banks\n",
+ nr_irqs, irq_bank_count);
/* Mask and clear all interrupts */
for (i = 0; i < irq_bank_count; i++) {
@@ -227,19 +233,15 @@ void __init omap1_init_irq(void)
irq_trigger = irq_banks[i].trigger_map >> IRQ_BIT(j);
omap_irq_set_cfg(j, 0, 0, irq_trigger);
-
- irq_set_chip_and_handler(j, &omap_irq_chip,
- handle_level_irq);
set_irq_flags(j, IRQF_VALID);
}
+ omap_alloc_gc(irq_banks[i].va, irq_base + i * 32, 32);
}
/* Unmask level 2 handler */
-
- if (cpu_is_omap7xx())
- omap_unmask_irq(irq_get_irq_data(INT_7XX_IH2_IRQ));
- else if (cpu_is_omap15xx())
- omap_unmask_irq(irq_get_irq_data(INT_1510_IH2_IRQ));
- else if (cpu_is_omap16xx())
- omap_unmask_irq(irq_get_irq_data(INT_1610_IH2_IRQ));
+ d = irq_get_irq_data(omap_irq_flags);
+ if (d) {
+ ct = irq_data_get_chip_type(d);
+ ct->chip.irq_unmask(d);
+ }
}
--
2.1.4
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