From cdb647a772e9def47594ff8ce7acf47f4d257b2e Mon Sep 17 00:00:00 2001 From: Yingjoe Chen Date: Mon, 12 Jan 2015 17:14:31 +0800 Subject: [PATCH] irqchip: mtk-sysirq: Get irq number from register resource size Originally mtk-sysirq hardcoded supported irq number to 224. This was fine since all SoCs before support the same number of irqs for intpol. However MT8173 intpol support 32 more irq pins, changes to get irq number from register resource size to suppor MT8173 properly. Signed-off-by: Yingjoe Chen Signed-off-by: Eddie Huang Cc: Cc: Pawel Moll Cc: Mark Rutland Cc: Ian Campbell Cc: Kumar Gala Cc: Catalin Marinas Cc: Will Deacon Cc: Olof Johansson Cc: Robert Richter Cc: Mark Brown Cc: Cc: Sascha Hauer Cc: Cc: Cc: Matthias Brugger Cc: Rob Herring Cc: Jason Cooper Link: http://lkml.kernel.org/r/1421054073-43468-3-git-send-email-eddie.huang@mediatek.com Signed-off-by: Thomas Gleixner --- drivers/irqchip/irq-mtk-sysirq.c | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-) diff --git a/drivers/irqchip/irq-mtk-sysirq.c b/drivers/irqchip/irq-mtk-sysirq.c index 0b0d2c00a2df..eaf0a710e98a 100644 --- a/drivers/irqchip/irq-mtk-sysirq.c +++ b/drivers/irqchip/irq-mtk-sysirq.c @@ -23,8 +23,6 @@ #include "irqchip.h" -#define MT6577_SYS_INTPOL_NUM (224) - struct mtk_sysirq_chip_data { spinlock_t lock; void __iomem *intpol_base; @@ -124,7 +122,8 @@ static int __init mtk_sysirq_of_init(struct device_node *node, { struct irq_domain *domain, *domain_parent; struct mtk_sysirq_chip_data *chip_data; - int ret = 0; + int ret, size, intpol_num; + struct resource res; domain_parent = irq_find_host(parent); if (!domain_parent) { @@ -132,19 +131,24 @@ static int __init mtk_sysirq_of_init(struct device_node *node, return -EINVAL; } + ret = of_address_to_resource(node, 0, &res); + if (ret) + return ret; + chip_data = kzalloc(sizeof(*chip_data), GFP_KERNEL); if (!chip_data) return -ENOMEM; - chip_data->intpol_base = of_io_request_and_map(node, 0, "intpol"); - if (IS_ERR(chip_data->intpol_base)) { + size = resource_size(&res); + intpol_num = size * 8; + chip_data->intpol_base = ioremap(res.start, size); + if (!chip_data->intpol_base) { pr_err("mtk_sysirq: unable to map sysirq register\n"); ret = PTR_ERR(chip_data->intpol_base); goto out_free; } - domain = irq_domain_add_hierarchy(domain_parent, 0, - MT6577_SYS_INTPOL_NUM, node, + domain = irq_domain_add_hierarchy(domain_parent, 0, intpol_num, node, &sysirq_domain_ops, chip_data); if (!domain) { ret = -ENOMEM; -- 2.20.1