diff options
| -rw-r--r-- | drivers/irqchip/irq-mscc-ocelot.c | 76 |
1 files changed, 54 insertions, 22 deletions
diff --git a/drivers/irqchip/irq-mscc-ocelot.c b/drivers/irqchip/irq-mscc-ocelot.c index 88143c0b700c..6d4029a2ded0 100644 --- a/drivers/irqchip/irq-mscc-ocelot.c +++ b/drivers/irqchip/irq-mscc-ocelot.c @@ -12,30 +12,51 @@ #include <linux/irqchip/chained_irq.h> #include <linux/interrupt.h> -#define ICPU_CFG_INTR_INTR_STICKY 0x10 -#define ICPU_CFG_INTR_INTR_ENA 0x18 -#define ICPU_CFG_INTR_INTR_ENA_CLR 0x1c -#define ICPU_CFG_INTR_INTR_ENA_SET 0x20 -#define ICPU_CFG_INTR_DST_INTR_IDENT(x) (0x38 + 0x4 * (x)) -#define ICPU_CFG_INTR_INTR_TRIGGER(x) (0x5c + 0x4 * (x)) - -#define OCELOT_NR_IRQ 24 +#define ICPU_CFG_INTR_DST_INTR_IDENT(_p, x) ((_p)->reg_off_ident + 0x4 * (x)) +#define ICPU_CFG_INTR_INTR_TRIGGER(_p, x) ((_p)->reg_off_trigger + 0x4 * (x)) + +#define FLAGS_HAS_TRIGGER BIT(0) + +struct chip_props { + u8 flags; + u8 reg_off_sticky; + u8 reg_off_ena; + u8 reg_off_ena_clr; + u8 reg_off_ena_set; + u8 reg_off_ident; + u8 reg_off_trigger; + u8 reg_off_ena_irq0; + u8 n_irq; +}; + +static struct chip_props ocelot_props = { + .flags = FLAGS_HAS_TRIGGER, + .reg_off_sticky = 0x10, + .reg_off_ena = 0x18, + .reg_off_ena_clr = 0x1c, + .reg_off_ena_set = 0x20, + .reg_off_ident = 0x38, + .reg_off_trigger = 0x5c, + .n_irq = 24, +}; static void ocelot_irq_unmask(struct irq_data *data) { struct irq_chip_generic *gc = irq_data_get_irq_chip_data(data); + struct irq_domain *d = data->domain; + struct chip_props *p = d->host_data; struct irq_chip_type *ct = irq_data_get_chip_type(data); unsigned int mask = data->mask; u32 val; irq_gc_lock(gc); - val = irq_reg_readl(gc, ICPU_CFG_INTR_INTR_TRIGGER(0)) | - irq_reg_readl(gc, ICPU_CFG_INTR_INTR_TRIGGER(1)); + val = irq_reg_readl(gc, ICPU_CFG_INTR_INTR_TRIGGER(p, 0)) | + irq_reg_readl(gc, ICPU_CFG_INTR_INTR_TRIGGER(p, 1)); if (!(val & mask)) - irq_reg_writel(gc, mask, ICPU_CFG_INTR_INTR_STICKY); + irq_reg_writel(gc, mask, p->reg_off_sticky); *ct->mask_cache &= ~mask; - irq_reg_writel(gc, mask, ICPU_CFG_INTR_INTR_ENA_SET); + irq_reg_writel(gc, mask, p->reg_off_ena_set); irq_gc_unlock(gc); } @@ -43,8 +64,9 @@ static void ocelot_irq_handler(struct irq_desc *desc) { struct irq_chip *chip = irq_desc_get_chip(desc); struct irq_domain *d = irq_desc_get_handler_data(desc); + struct chip_props *p = d->host_data; struct irq_chip_generic *gc = irq_get_domain_generic_chip(d, 0); - u32 reg = irq_reg_readl(gc, ICPU_CFG_INTR_DST_INTR_IDENT(0)); + u32 reg = irq_reg_readl(gc, ICPU_CFG_INTR_DST_INTR_IDENT(p, 0)); chained_irq_enter(chip, desc); @@ -58,8 +80,9 @@ static void ocelot_irq_handler(struct irq_desc *desc) chained_irq_exit(chip, desc); } -static int __init ocelot_irq_init(struct device_node *node, - struct device_node *parent) +static int __init vcoreiii_irq_init(struct device_node *node, + struct device_node *parent, + struct chip_props *p) { struct irq_domain *domain; struct irq_chip_generic *gc; @@ -69,14 +92,14 @@ static int __init ocelot_irq_init(struct device_node *node, if (!parent_irq) return -EINVAL; - domain = irq_domain_add_linear(node, OCELOT_NR_IRQ, + domain = irq_domain_add_linear(node, p->n_irq, &irq_generic_chip_ops, NULL); if (!domain) { pr_err("%pOFn: unable to add irq domain\n", node); return -ENOMEM; } - ret = irq_alloc_domain_generic_chips(domain, OCELOT_NR_IRQ, 1, + ret = irq_alloc_domain_generic_chips(domain, p->n_irq, 1, "icpu", handle_level_irq, 0, 0, 0); if (ret) { @@ -92,16 +115,18 @@ static int __init ocelot_irq_init(struct device_node *node, goto err_gc_free; } - gc->chip_types[0].regs.ack = ICPU_CFG_INTR_INTR_STICKY; - gc->chip_types[0].regs.mask = ICPU_CFG_INTR_INTR_ENA_CLR; + gc->chip_types[0].regs.ack = p->reg_off_sticky; + gc->chip_types[0].regs.mask = p->reg_off_ena_clr; gc->chip_types[0].chip.irq_ack = irq_gc_ack_set_bit; gc->chip_types[0].chip.irq_mask = irq_gc_mask_set_bit; - gc->chip_types[0].chip.irq_unmask = ocelot_irq_unmask; + if (p->flags & FLAGS_HAS_TRIGGER) + gc->chip_types[0].chip.irq_unmask = ocelot_irq_unmask; /* Mask and ack all interrupts */ - irq_reg_writel(gc, 0, ICPU_CFG_INTR_INTR_ENA); - irq_reg_writel(gc, 0xffffffff, ICPU_CFG_INTR_INTR_STICKY); + irq_reg_writel(gc, 0, p->reg_off_ena); + irq_reg_writel(gc, 0xffffffff, p->reg_off_sticky); + domain->host_data = p; irq_set_chained_handler_and_data(parent_irq, ocelot_irq_handler, domain); @@ -115,4 +140,11 @@ err_domain_remove: return ret; } + +static int __init ocelot_irq_init(struct device_node *node, + struct device_node *parent) +{ + return vcoreiii_irq_init(node, parent, &ocelot_props); +} + IRQCHIP_DECLARE(ocelot_icpu, "mscc,ocelot-icpu-intr", ocelot_irq_init); |