Original mtk-sysirq does not support multiple intpol bases. However,
there are some mtk chips need it.
Signed-off-by: Mars Cheng <mars.cheng@xxxxxxxxxxxx>
---
drivers/irqchip/irq-mtk-sysirq.c | 42 +++++++++++++++++++++++++++++++-------
1 file changed, 35 insertions(+), 7 deletions(-)
diff --git a/drivers/irqchip/irq-mtk-sysirq.c b/drivers/irqchip/irq-mtk-sysirq.c
index 63ac73b..20f488a 100644
--- a/drivers/irqchip/irq-mtk-sysirq.c
+++ b/drivers/irqchip/irq-mtk-sysirq.c
@@ -24,7 +24,10 @@
struct mtk_sysirq_chip_data {
spinlock_t lock;
+ unsigned int intpol_num;
+ unsigned int intpol_num_ex;
void __iomem *intpol_base;
+ void __iomem *intpol_base_ex;
};
static int mtk_sysirq_set_type(struct irq_data *data, unsigned int type)
@@ -32,14 +35,22 @@ static int mtk_sysirq_set_type(struct irq_data *data, unsigned int type)
irq_hw_number_t hwirq = data->hwirq;
struct mtk_sysirq_chip_data *chip_data = data->chip_data;
u32 offset, reg_index, value;
+ void __iomem *intpol_base;
unsigned long flags;
int ret;
+ if (hwirq >= (chip_data->intpol_num)) {
+ intpol_base = chip_data->intpol_base_ex;
+ reg_index = (hwirq - chip_data->intpol_num) >> 5;
+ } else {
+ intpol_base = chip_data->intpol_base;
+ reg_index = hwirq >> 5;
+ }
+
offset = hwirq & 0x1f;
- reg_index = hwirq >> 5;
spin_lock_irqsave(&chip_data->lock, flags);
- value = readl_relaxed(chip_data->intpol_base + reg_index * 4);
+ value = readl_relaxed(intpol_base + reg_index * 4);
if (type == IRQ_TYPE_LEVEL_LOW || type == IRQ_TYPE_EDGE_FALLING) {
if (type == IRQ_TYPE_LEVEL_LOW)
type = IRQ_TYPE_LEVEL_HIGH;
@@ -49,7 +60,7 @@ static int mtk_sysirq_set_type(struct irq_data *data, unsigned int type)
} else {
value &= ~(1 << offset);
}
- writel(value, chip_data->intpol_base + reg_index * 4);
+ writel(value, intpol_base + reg_index * 4);
data = data->parent_data;
ret = data->chip->irq_set_type(data, type);
@@ -124,7 +135,7 @@ 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, size, intpol_num;
+ int ret, size, total_intpol_num;
struct resource res;
domain_parent = irq_find_host(parent);
@@ -142,7 +153,8 @@ static int __init mtk_sysirq_of_init(struct device_node *node,
return -ENOMEM;
size = resource_size(&res);
- intpol_num = size * 8;
+ chip_data->intpol_num = size * 8;
+ total_intpol_num = chip_data->intpol_num;
chip_data->intpol_base = ioremap(res.start, size);
if (!chip_data->intpol_base) {
pr_err("mtk_sysirq: unable to map sysirq register\n");
@@ -150,8 +162,22 @@ static int __init mtk_sysirq_of_init(struct device_node *node,
goto out_free;
}
- domain = irq_domain_add_hierarchy(domain_parent, 0, intpol_num, node,
- &sysirq_domain_ops, chip_data);
+ /* if we get the second base, handle it, or just go on */
+ ret = of_address_to_resource(node, 1, &res);
+ if (!ret) { /* if we get the second base, handle it */
+ size = resource_size(&res);
+ chip_data->intpol_num_ex = size * 8;
+ total_intpol_num += chip_data->intpol_num_ex;
+ chip_data->intpol_base_ex = ioremap(res.start, size);
+ if (!chip_data->intpol_base_ex) {
+ pr_err("mtk_sysirq: unable to map sysirq register\n");
+ ret = -ENXIO;
+ goto out_free_ex;
+ }
+ }
+
+ domain = irq_domain_add_hierarchy(domain_parent, 0, total_intpol_num,
+ node, &sysirq_domain_ops, chip_data);
if (!domain) {
ret = -ENOMEM;
goto out_unmap;
@@ -161,6 +187,8 @@ static int __init mtk_sysirq_of_init(struct device_node *node,
return 0;
out_unmap:
+ iounmap(chip_data->intpol_base_ex);
+out_free_ex:
iounmap(chip_data->intpol_base);
out_free:
kfree(chip_data);
--
1.7.9.5
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