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irqchip: mtk-sysirq: Get irq number from register resource size

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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 <[email protected]>
Signed-off-by: Eddie Huang <[email protected]>
Cc: <[email protected]>
Cc: Pawel Moll <[email protected]>
Cc: Mark Rutland <[email protected]>
Cc: Ian Campbell <[email protected]>
Cc: Kumar Gala <[email protected]>
Cc: Catalin Marinas <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: Olof  Johansson <[email protected]>
Cc: Robert Richter <[email protected]>
Cc: Mark Brown <[email protected]>
Cc: <[email protected]>
Cc: Sascha Hauer <[email protected]>
Cc: <[email protected]>
Cc: <[email protected]>
Cc: Matthias Brugger <[email protected]>
Cc: Rob Herring <[email protected]>
Cc: Jason Cooper <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>
This commit is contained in:
Yingjoe Chen 2015-01-12 17:14:31 +08:00 • committed by Thomas Gleixner
commit cdb647a772
1 changed files with 11 additions and 7 deletions
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18
drivers/irqchip/irq-mtk-sysirq.c
View file

@ -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;