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Subject[PATCH v3 13/14] irqchip: mbigen: introduce mbigen_of_create_domain()
Date
From: Kefeng Wang <wangkefeng.wang@huawei.com>

Introduce mbigen_of_create_domain() to consolidate OF related
code and prepare for ACPI later.

Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ma Jun <majun258@huawei.com>
---
drivers/irqchip/irq-mbigen.c | 42 +++++++++++++++++++++++++++---------------
1 file changed, 27 insertions(+), 15 deletions(-)

diff --git a/drivers/irqchip/irq-mbigen.c b/drivers/irqchip/irq-mbigen.c
index c01ab41..9484ea0 100644
--- a/drivers/irqchip/irq-mbigen.c
+++ b/drivers/irqchip/irq-mbigen.c
@@ -236,27 +236,15 @@ static int mbigen_irq_domain_alloc(struct irq_domain *domain,
.free = irq_domain_free_irqs_common,
};

-static int mbigen_device_probe(struct platform_device *pdev)
+static int mbigen_of_create_domain(struct platform_device *pdev,
+ struct mbigen_device *mgn_chip)
{
- struct mbigen_device *mgn_chip;
+ struct device *parent;
struct platform_device *child;
struct irq_domain *domain;
struct device_node *np;
- struct device *parent;
- struct resource *res;
u32 num_pins;

- mgn_chip = devm_kzalloc(&pdev->dev, sizeof(*mgn_chip), GFP_KERNEL);
- if (!mgn_chip)
- return -ENOMEM;
-
- mgn_chip->pdev = pdev;
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- mgn_chip->base = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(mgn_chip->base))
- return PTR_ERR(mgn_chip->base);
-
for_each_child_of_node(pdev->dev.of_node, np) {
if (!of_property_read_bool(np, "interrupt-controller"))
continue;
@@ -280,6 +268,30 @@ static int mbigen_device_probe(struct platform_device *pdev)
return -ENOMEM;
}

+ return 0;
+}
+
+static int mbigen_device_probe(struct platform_device *pdev)
+{
+ struct mbigen_device *mgn_chip;
+ struct resource *res;
+ int err;
+
+ mgn_chip = devm_kzalloc(&pdev->dev, sizeof(*mgn_chip), GFP_KERNEL);
+ if (!mgn_chip)
+ return -ENOMEM;
+
+ mgn_chip->pdev = pdev;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ mgn_chip->base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(mgn_chip->base))
+ return PTR_ERR(mgn_chip->base);
+
+ err = mbigen_of_create_domain(pdev, mgn_chip);
+ if (err)
+ return err;
+
platform_set_drvdata(pdev, mgn_chip);
return 0;
}
--
1.7.12.4
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