X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?p=kvmfornfv.git;a=blobdiff_plain;f=kernel%2Fdrivers%2Firqchip%2Firq-renesas-irqc.c;h=52304b139aa46a60966d03922197b060f4693cf1;hp=cdf80b7794cd738e38ec956f3246ae216f9ddde1;hb=e09b41010ba33a20a87472ee821fa407a5b8da36;hpb=f93b97fd65072de626c074dbe099a1fff05ce060 diff --git a/kernel/drivers/irqchip/irq-renesas-irqc.c b/kernel/drivers/irqchip/irq-renesas-irqc.c index cdf80b779..52304b139 100644 --- a/kernel/drivers/irqchip/irq-renesas-irqc.c +++ b/kernel/drivers/irqchip/irq-renesas-irqc.c @@ -29,7 +29,6 @@ #include #include #include -#include #include #define IRQC_IRQ_MAX 32 /* maximum 32 interrupts per driver instance */ @@ -54,7 +53,6 @@ struct irqc_irq { int hw_irq; int requested_irq; - int domain_irq; struct irqc_priv *p; }; @@ -62,36 +60,22 @@ struct irqc_priv { void __iomem *iomem; void __iomem *cpu_int_base; struct irqc_irq irq[IRQC_IRQ_MAX]; - struct renesas_irqc_config config; unsigned int number_of_irqs; struct platform_device *pdev; - struct irq_chip irq_chip; + struct irq_chip_generic *gc; struct irq_domain *irq_domain; struct clk *clk; }; -static void irqc_dbg(struct irqc_irq *i, char *str) +static struct irqc_priv *irq_data_to_priv(struct irq_data *data) { - dev_dbg(&i->p->pdev->dev, "%s (%d:%d:%d)\n", - str, i->requested_irq, i->hw_irq, i->domain_irq); + return data->domain->host_data; } -static void irqc_irq_enable(struct irq_data *d) -{ - struct irqc_priv *p = irq_data_get_irq_chip_data(d); - int hw_irq = irqd_to_hwirq(d); - - irqc_dbg(&p->irq[hw_irq], "enable"); - iowrite32(BIT(hw_irq), p->cpu_int_base + IRQC_EN_SET); -} - -static void irqc_irq_disable(struct irq_data *d) +static void irqc_dbg(struct irqc_irq *i, char *str) { - struct irqc_priv *p = irq_data_get_irq_chip_data(d); - int hw_irq = irqd_to_hwirq(d); - - irqc_dbg(&p->irq[hw_irq], "disable"); - iowrite32(BIT(hw_irq), p->cpu_int_base + IRQC_EN_STS); + dev_dbg(&i->p->pdev->dev, "%s (%d:%d)\n", + str, i->requested_irq, i->hw_irq); } static unsigned char irqc_sense[IRQ_TYPE_SENSE_MASK + 1] = { @@ -104,7 +88,7 @@ static unsigned char irqc_sense[IRQ_TYPE_SENSE_MASK + 1] = { static int irqc_irq_set_type(struct irq_data *d, unsigned int type) { - struct irqc_priv *p = irq_data_get_irq_chip_data(d); + struct irqc_priv *p = irq_data_to_priv(d); int hw_irq = irqd_to_hwirq(d); unsigned char value = irqc_sense[type & IRQ_TYPE_SENSE_MASK]; u32 tmp; @@ -123,7 +107,10 @@ static int irqc_irq_set_type(struct irq_data *d, unsigned int type) static int irqc_irq_set_wake(struct irq_data *d, unsigned int on) { - struct irqc_priv *p = irq_data_get_irq_chip_data(d); + struct irqc_priv *p = irq_data_to_priv(d); + int hw_irq = irqd_to_hwirq(d); + + irq_set_irq_wake(p->irq[hw_irq].requested_irq, on); if (!p->clk) return 0; @@ -147,39 +134,17 @@ static irqreturn_t irqc_irq_handler(int irq, void *dev_id) if (ioread32(p->iomem + DETECT_STATUS) & bit) { iowrite32(bit, p->iomem + DETECT_STATUS); irqc_dbg(i, "demux2"); - generic_handle_irq(i->domain_irq); + generic_handle_irq(irq_find_mapping(p->irq_domain, i->hw_irq)); return IRQ_HANDLED; } return IRQ_NONE; } -static int irqc_irq_domain_map(struct irq_domain *h, unsigned int virq, - irq_hw_number_t hw) -{ - struct irqc_priv *p = h->host_data; - - p->irq[hw].domain_irq = virq; - p->irq[hw].hw_irq = hw; - - irqc_dbg(&p->irq[hw], "map"); - irq_set_chip_data(virq, h->host_data); - irq_set_chip_and_handler(virq, &p->irq_chip, handle_level_irq); - set_irq_flags(virq, IRQF_VALID); /* kill me now */ - return 0; -} - -static struct irq_domain_ops irqc_irq_domain_ops = { - .map = irqc_irq_domain_map, - .xlate = irq_domain_xlate_twocell, -}; - static int irqc_probe(struct platform_device *pdev) { - struct renesas_irqc_config *pdata = pdev->dev.platform_data; struct irqc_priv *p; struct resource *io; struct resource *irq; - struct irq_chip *irq_chip; const char *name = dev_name(&pdev->dev); int ret; int k; @@ -191,10 +156,6 @@ static int irqc_probe(struct platform_device *pdev) goto err0; } - /* deal with driver instance configuration */ - if (pdata) - memcpy(&p->config, pdata, sizeof(*pdata)); - p->pdev = pdev; platform_set_drvdata(pdev, p); @@ -222,6 +183,7 @@ static int irqc_probe(struct platform_device *pdev) break; p->irq[k].p = p; + p->irq[k].hw_irq = k; p->irq[k].requested_irq = irq->start; } @@ -242,48 +204,51 @@ static int irqc_probe(struct platform_device *pdev) p->cpu_int_base = p->iomem + IRQC_INT_CPU_BASE(0); /* SYS-SPI */ - irq_chip = &p->irq_chip; - irq_chip->name = name; - irq_chip->irq_mask = irqc_irq_disable; - irq_chip->irq_unmask = irqc_irq_enable; - irq_chip->irq_set_type = irqc_irq_set_type; - irq_chip->irq_set_wake = irqc_irq_set_wake; - irq_chip->flags = IRQCHIP_MASK_ON_SUSPEND; - - p->irq_domain = irq_domain_add_simple(pdev->dev.of_node, + p->irq_domain = irq_domain_add_linear(pdev->dev.of_node, p->number_of_irqs, - p->config.irq_base, - &irqc_irq_domain_ops, p); + &irq_generic_chip_ops, p); if (!p->irq_domain) { ret = -ENXIO; dev_err(&pdev->dev, "cannot initialize irq domain\n"); goto err2; } + ret = irq_alloc_domain_generic_chips(p->irq_domain, p->number_of_irqs, + 1, name, handle_level_irq, + 0, 0, IRQ_GC_INIT_NESTED_LOCK); + if (ret) { + dev_err(&pdev->dev, "cannot allocate generic chip\n"); + goto err3; + } + + p->gc = irq_get_domain_generic_chip(p->irq_domain, 0); + p->gc->reg_base = p->cpu_int_base; + p->gc->chip_types[0].regs.enable = IRQC_EN_SET; + p->gc->chip_types[0].regs.disable = IRQC_EN_STS; + p->gc->chip_types[0].chip.irq_mask = irq_gc_mask_disable_reg; + p->gc->chip_types[0].chip.irq_unmask = irq_gc_unmask_enable_reg; + p->gc->chip_types[0].chip.irq_set_type = irqc_irq_set_type; + p->gc->chip_types[0].chip.irq_set_wake = irqc_irq_set_wake; + p->gc->chip_types[0].chip.flags = IRQCHIP_MASK_ON_SUSPEND; + /* request interrupts one by one */ for (k = 0; k < p->number_of_irqs; k++) { if (request_irq(p->irq[k].requested_irq, irqc_irq_handler, 0, name, &p->irq[k])) { dev_err(&pdev->dev, "failed to request IRQ\n"); ret = -ENOENT; - goto err3; + goto err4; } } dev_info(&pdev->dev, "driving %d irqs\n", p->number_of_irqs); - /* warn in case of mismatch if irq base is specified */ - if (p->config.irq_base) { - if (p->config.irq_base != p->irq[0].domain_irq) - dev_warn(&pdev->dev, "irq base mismatch (%d/%d)\n", - p->config.irq_base, p->irq[0].domain_irq); - } - return 0; -err3: +err4: while (--k >= 0) free_irq(p->irq[k].requested_irq, &p->irq[k]); +err3: irq_domain_remove(p->irq_domain); err2: iounmap(p->iomem);