From c5d1d857482b080875640bb68bc9d8b65ad29b6f Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Thu, 19 Jun 2014 21:34:39 +0000 Subject: [PATCH] irqchip: spear_shirq: Namespace cleanup The struct members of the shirq block struct are named to confuse the hell out of the casual reader. Clean it up. Signed-off-by: Thomas Gleixner Link: https://lkml.kernel.org/r/20140619212713.219411832@linutronix.de Acked-by: Viresh Kumar Signed-off-by: Jason Cooper --- drivers/irqchip/spear-shirq.c | 106 +++++++++++++++++----------------- 1 file changed, 53 insertions(+), 53 deletions(-) diff --git a/drivers/irqchip/spear-shirq.c b/drivers/irqchip/spear-shirq.c index 576968efbc4d..f7c25a77845a 100644 --- a/drivers/irqchip/spear-shirq.c +++ b/drivers/irqchip/spear-shirq.c @@ -47,20 +47,20 @@ struct shirq_regs { /* * struct spear_shirq: shared irq structure * - * irq_base: base irq in linux domain - * irq_nr: no. of shared interrupts in a particular block - * irq_bit_off: starting bit offset in the status register - * invalid_irq: irq group is currently disabled - * base: base address of shared irq register - * regs: register configuration for shared irq block + * base: Base register address + * regs: Register configuration for shared irq block + * virq_base: Base virtual interrupt number + * nr_irqs: Number of interrupts handled by this block + * offset: Bit offset of the first interrupt + * disabled: Group is disabled, but accounted */ struct spear_shirq { - u32 irq_base; - u32 irq_nr; - u32 irq_bit_off; - int invalid_irq; - void __iomem *base; - struct shirq_regs regs; + void __iomem *base; + struct shirq_regs regs; + u32 virq_base; + u32 nr_irqs; + u32 offset; + bool disabled; }; static DEFINE_SPINLOCK(lock); @@ -70,8 +70,8 @@ static DEFINE_SPINLOCK(lock); #define SPEAR300_INT_STS_MASK_REG 0x58 static struct spear_shirq spear300_shirq_ras1 = { - .irq_nr = 9, - .irq_bit_off = 0, + .offset = 0, + .nr_irqs = 9, .regs = { .enb_reg = SPEAR300_INT_ENB_MASK_REG, .status_reg = SPEAR300_INT_STS_MASK_REG, @@ -87,8 +87,8 @@ static struct spear_shirq *spear300_shirq_blocks[] = { #define SPEAR310_INT_STS_MASK_REG 0x04 static struct spear_shirq spear310_shirq_ras1 = { - .irq_nr = 8, - .irq_bit_off = 0, + .offset = 0, + .nr_irqs = 8, .regs = { .enb_reg = -1, .status_reg = SPEAR310_INT_STS_MASK_REG, @@ -97,8 +97,8 @@ static struct spear_shirq spear310_shirq_ras1 = { }; static struct spear_shirq spear310_shirq_ras2 = { - .irq_nr = 5, - .irq_bit_off = 8, + .offset = 8, + .nr_irqs = 5, .regs = { .enb_reg = -1, .status_reg = SPEAR310_INT_STS_MASK_REG, @@ -107,8 +107,8 @@ static struct spear_shirq spear310_shirq_ras2 = { }; static struct spear_shirq spear310_shirq_ras3 = { - .irq_nr = 1, - .irq_bit_off = 13, + .offset = 13, + .nr_irqs = 1, .regs = { .enb_reg = -1, .status_reg = SPEAR310_INT_STS_MASK_REG, @@ -117,8 +117,8 @@ static struct spear_shirq spear310_shirq_ras3 = { }; static struct spear_shirq spear310_shirq_intrcomm_ras = { - .irq_nr = 3, - .irq_bit_off = 14, + .offset = 14, + .nr_irqs = 3, .regs = { .enb_reg = -1, .status_reg = SPEAR310_INT_STS_MASK_REG, @@ -139,8 +139,8 @@ static struct spear_shirq *spear310_shirq_blocks[] = { #define SPEAR320_INT_ENB_MASK_REG 0x08 static struct spear_shirq spear320_shirq_ras1 = { - .irq_nr = 3, - .irq_bit_off = 7, + .offset = 7, + .nr_irqs = 3, .regs = { .enb_reg = -1, .status_reg = SPEAR320_INT_STS_MASK_REG, @@ -150,8 +150,8 @@ static struct spear_shirq spear320_shirq_ras1 = { }; static struct spear_shirq spear320_shirq_ras2 = { - .irq_nr = 1, - .irq_bit_off = 10, + .offset = 10, + .nr_irqs = 1, .regs = { .enb_reg = -1, .status_reg = SPEAR320_INT_STS_MASK_REG, @@ -161,9 +161,9 @@ static struct spear_shirq spear320_shirq_ras2 = { }; static struct spear_shirq spear320_shirq_ras3 = { - .irq_nr = 7, - .irq_bit_off = 0, - .invalid_irq = 1, + .offset = 0, + .nr_irqs = 7, + .disabled = 1, .regs = { .enb_reg = SPEAR320_INT_ENB_MASK_REG, .reset_to_enb = 1, @@ -174,8 +174,8 @@ static struct spear_shirq spear320_shirq_ras3 = { }; static struct spear_shirq spear320_shirq_intrcomm_ras = { - .irq_nr = 11, - .irq_bit_off = 11, + .offset = 11, + .nr_irqs = 11, .regs = { .enb_reg = -1, .status_reg = SPEAR320_INT_STS_MASK_REG, @@ -194,7 +194,7 @@ static struct spear_shirq *spear320_shirq_blocks[] = { static void shirq_irq_mask_unmask(struct irq_data *d, bool mask) { struct spear_shirq *shirq = irq_data_get_irq_chip_data(d); - u32 val, offset = d->irq - shirq->irq_base; + u32 val, offset = d->irq - shirq->virq_base; unsigned long flags; if (shirq->regs.enb_reg == -1) @@ -204,9 +204,9 @@ static void shirq_irq_mask_unmask(struct irq_data *d, bool mask) val = readl(shirq->base + shirq->regs.enb_reg); if (mask ^ shirq->regs.reset_to_enb) - val &= ~(0x1 << shirq->irq_bit_off << offset); + val &= ~(0x1 << shirq->offset << offset); else - val |= 0x1 << shirq->irq_bit_off << offset; + val |= 0x1 << shirq->offset << offset; writel(val, shirq->base + shirq->regs.enb_reg); spin_unlock_irqrestore(&lock, flags); @@ -239,17 +239,17 @@ static void shirq_handler(unsigned irq, struct irq_desc *desc) chip = irq_get_chip(irq); chip->irq_ack(&desc->irq_data); - mask = ((0x1 << shirq->irq_nr) - 1) << shirq->irq_bit_off; + mask = ((0x1 << shirq->nr_irqs) - 1) << shirq->offset; while ((val = readl(shirq->base + shirq->regs.status_reg) & mask)) { - val >>= shirq->irq_bit_off; - for (i = 0, j = 1; i < shirq->irq_nr; i++, j <<= 1) { + val >>= shirq->offset; + for (i = 0, j = 1; i < shirq->nr_irqs; i++, j <<= 1) { if (!(j & val)) continue; - generic_handle_irq(shirq->irq_base + i); + generic_handle_irq(shirq->virq_base + i); /* clear interrupt */ if (shirq->regs.clear_reg == -1) @@ -257,9 +257,9 @@ static void shirq_handler(unsigned irq, struct irq_desc *desc) tmp = readl(shirq->base + shirq->regs.clear_reg); if (shirq->regs.reset_to_clear) - tmp &= ~(j << shirq->irq_bit_off); + tmp &= ~(j << shirq->offset); else - tmp |= (j << shirq->irq_bit_off); + tmp |= (j << shirq->offset); writel(tmp, shirq->base + shirq->regs.clear_reg); } } @@ -271,24 +271,24 @@ static void __init spear_shirq_register(struct spear_shirq *shirq, { int i; - if (shirq->invalid_irq) + if (shirq->disabled) return; irq_set_chained_handler(parent_irq, shirq_handler); irq_set_handler_data(parent_irq, shirq); - for (i = 0; i < shirq->irq_nr; i++) { - irq_set_chip_and_handler(shirq->irq_base + i, + for (i = 0; i < shirq->nr_irqs; i++) { + irq_set_chip_and_handler(shirq->virq_base + i, &shirq_chip, handle_simple_irq); - set_irq_flags(shirq->irq_base + i, IRQF_VALID); - irq_set_chip_data(shirq->irq_base + i, shirq); + set_irq_flags(shirq->virq_base + i, IRQF_VALID); + irq_set_chip_data(shirq->virq_base + i, shirq); } } static int __init shirq_init(struct spear_shirq **shirq_blocks, int block_nr, struct device_node *np) { - int i, parent_irq, irq_base, hwirq = 0, irq_nr = 0; + int i, parent_irq, virq_base, hwirq = 0, nr_irqs = 0; struct irq_domain *shirq_domain; void __iomem *base; @@ -299,15 +299,15 @@ static int __init shirq_init(struct spear_shirq **shirq_blocks, int block_nr, } for (i = 0; i < block_nr; i++) - irq_nr += shirq_blocks[i]->irq_nr; + nr_irqs += shirq_blocks[i]->nr_irqs; - irq_base = irq_alloc_descs(-1, 0, irq_nr, 0); - if (IS_ERR_VALUE(irq_base)) { + virq_base = irq_alloc_descs(-1, 0, nr_irqs, 0); + if (IS_ERR_VALUE(virq_base)) { pr_err("%s: irq desc alloc failed\n", __func__); goto err_unmap; } - shirq_domain = irq_domain_add_legacy(np, irq_nr, irq_base, 0, + shirq_domain = irq_domain_add_legacy(np, nr_irqs, virq_base, 0, &irq_domain_simple_ops, NULL); if (WARN_ON(!shirq_domain)) { pr_warn("%s: irq domain init failed\n", __func__); @@ -316,18 +316,18 @@ static int __init shirq_init(struct spear_shirq **shirq_blocks, int block_nr, for (i = 0; i < block_nr; i++) { shirq_blocks[i]->base = base; - shirq_blocks[i]->irq_base = irq_find_mapping(shirq_domain, + shirq_blocks[i]->virq_base = irq_find_mapping(shirq_domain, hwirq); parent_irq = irq_of_parse_and_map(np, i); spear_shirq_register(shirq_blocks[i], parent_irq); - hwirq += shirq_blocks[i]->irq_nr; + hwirq += shirq_blocks[i]->nr_irqs; } return 0; err_free_desc: - irq_free_descs(irq_base, irq_nr); + irq_free_descs(virq_base, nr_irqs); err_unmap: iounmap(base); return -ENXIO; -- 2.39.5