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Subject[PATCH v2 2/2] irqchip/qeic: merge qeic_of_init into qe_ic_init
Date
qeic_of_init just get device_node of qeic from dtb and call qe_ic_init,
pass the device_node to qe_ic_init.
So merge qeic_of_init into qe_ic_init to get the qeic node in
qe_ic_init.

Signed-off-by: Zhao Qiang <qiang.zhao@nxp.com>
---
Changes for v2:
- modify subject and commit msg
- return 0 and add put node when return in qe_ic_init

drivers/irqchip/qe_ic.c | 91 +++++++++++++++++++++++++---------------------
include/soc/fsl/qe/qe_ic.h | 7 ----
2 files changed, 50 insertions(+), 48 deletions(-)

diff --git a/drivers/irqchip/qe_ic.c b/drivers/irqchip/qe_ic.c
index 38960fc..f7e4fa7 100644
--- a/drivers/irqchip/qe_ic.c
+++ b/drivers/irqchip/qe_ic.c
@@ -317,27 +317,38 @@ unsigned int qe_ic_get_high_irq(struct qe_ic *qe_ic)
return irq_linear_revmap(qe_ic->irqhost, irq);
}

-void __init qe_ic_init(struct device_node *node, unsigned int flags,
- void (*low_handler)(struct irq_desc *desc),
- void (*high_handler)(struct irq_desc *desc))
+static int __init qe_ic_init(unsigned int flags)
{
+ struct device_node *node;
struct qe_ic *qe_ic;
struct resource res;
- u32 temp = 0, ret, high_active = 0;
+ u32 temp = 0, high_active = 0;
+ int ret = 0;
+
+ node = of_find_compatible_node(NULL, NULL, "fsl,qe-ic");
+ if (!node) {
+ node = of_find_node_by_type(NULL, "qeic");
+ if (!node)
+ return -ENODEV;
+ }

ret = of_address_to_resource(node, 0, &res);
- if (ret)
- return;
+ if (ret) {
+ ret = -ENODEV;
+ goto err_put_node;
+ }

qe_ic = kzalloc(sizeof(*qe_ic), GFP_KERNEL);
- if (qe_ic == NULL)
- return;
+ if (qe_ic == NULL) {
+ ret = -ENOMEM;
+ goto err_put_node;
+ }

qe_ic->irqhost = irq_domain_add_linear(node, NR_QE_IC_INTS,
&qe_ic_host_ops, qe_ic);
if (qe_ic->irqhost == NULL) {
- kfree(qe_ic);
- return;
+ ret = -ENOMEM;
+ goto err_free_qe_ic;
}

qe_ic->regs = ioremap(res.start, resource_size(&res));
@@ -348,9 +359,9 @@ void __init qe_ic_init(struct device_node *node, unsigned int flags,
qe_ic->virq_low = irq_of_parse_and_map(node, 1);

if (qe_ic->virq_low == NO_IRQ) {
- printk(KERN_ERR "Failed to map QE_IC low IRQ\n");
- kfree(qe_ic);
- return;
+ pr_err("Failed to map QE_IC low IRQ\n");
+ ret = -ENOMEM;
+ goto err_domain_remove;
}

/* default priority scheme is grouped. If spread mode is */
@@ -377,13 +388,24 @@ void __init qe_ic_init(struct device_node *node, unsigned int flags,
qe_ic_write(qe_ic->regs, QEIC_CICR, temp);

irq_set_handler_data(qe_ic->virq_low, qe_ic);
- irq_set_chained_handler(qe_ic->virq_low, low_handler);
+ irq_set_chained_handler(qe_ic->virq_low, qe_ic_cascade_low_mpic);

if (qe_ic->virq_high != NO_IRQ &&
qe_ic->virq_high != qe_ic->virq_low) {
irq_set_handler_data(qe_ic->virq_high, qe_ic);
- irq_set_chained_handler(qe_ic->virq_high, high_handler);
+ irq_set_chained_handler(qe_ic->virq_high,
+ qe_ic_cascade_high_mpic);
}
+ of_node_put(node);
+ return 0;
+
+err_domain_remove:
+ irq_domain_remove(qe_ic->irqhost);
+err_free_qe_ic:
+ kfree(qe_ic);
+err_put_node:
+ of_node_put(node);
+ return ret;
}

void qe_ic_set_highest_priority(unsigned int virq, int high)
@@ -490,39 +512,26 @@ static struct device device_qe_ic = {
.bus = &qe_ic_subsys,
};

-static int __init init_qe_ic_sysfs(void)
+static int __init init_qe_ic(void)
{
- int rc;
+ int ret;

- printk(KERN_DEBUG "Registering qe_ic with sysfs...\n");
+ ret = qe_ic_init(0);
+ if (ret)
+ return ret;

- rc = subsys_system_register(&qe_ic_subsys, NULL);
- if (rc) {
- printk(KERN_ERR "Failed registering qe_ic sys class\n");
+ ret = subsys_system_register(&qe_ic_subsys, NULL);
+ if (ret) {
+ pr_err("Failed registering qe_ic sys class\n");
return -ENODEV;
}
- rc = device_register(&device_qe_ic);
- if (rc) {
- printk(KERN_ERR "Failed registering qe_ic sys device\n");
+ ret = device_register(&device_qe_ic);
+ if (ret) {
+ pr_err("Failed registering qe_ic sys device\n");
return -ENODEV;
}
- return 0;
-}
-
-static int __init qeic_of_init(void)
-{
- struct device_node *np;

- np = of_find_compatible_node(NULL, NULL, "fsl,qe-ic");
- if (!np) {
- np = of_find_node_by_type(NULL, "qeic");
- if (!np)
- return;
- }
- qe_ic_init(np, 0, qe_ic_cascade_low_mpic,
- qe_ic_cascade_high_mpic);
- of_node_put(np);
+ return 0;
}

-subsys_initcall(qeic_of_init);
-subsys_initcall(init_qe_ic_sysfs);
+subsys_initcall(init_qe_ic);
diff --git a/include/soc/fsl/qe/qe_ic.h b/include/soc/fsl/qe/qe_ic.h
index 1e155ca..6113699 100644
--- a/include/soc/fsl/qe/qe_ic.h
+++ b/include/soc/fsl/qe/qe_ic.h
@@ -58,16 +58,9 @@ enum qe_ic_grp_id {
};

#ifdef CONFIG_QUICC_ENGINE
-void qe_ic_init(struct device_node *node, unsigned int flags,
- void (*low_handler)(struct irq_desc *desc),
- void (*high_handler)(struct irq_desc *desc));
unsigned int qe_ic_get_low_irq(struct qe_ic *qe_ic);
unsigned int qe_ic_get_high_irq(struct qe_ic *qe_ic);
#else
-static inline void qe_ic_init(struct device_node *node, unsigned int flags,
- void (*low_handler)(struct irq_desc *desc),
- void (*high_handler)(struct irq_desc *desc))
-{}
static inline unsigned int qe_ic_get_low_irq(struct qe_ic *qe_ic)
{ return 0; }
static inline unsigned int qe_ic_get_high_irq(struct qe_ic *qe_ic)
--
2.1.0.27.g96db324
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