[RFC PATCH v4 07/17] irqchip/sun4i: Add support for Allwinner ARMv5 F1C100s

Mesih Kilinc
2018-11-25T07:44:04Z

This patch adds support for suniv Allwinner ARMv5 F1C100s SoC which has
stripped version of interrupt controller that found in A10/A13.

Signed-off-by: Mesih Kilinc <mesihkilinc@gmail.com>
---
drivers/irqchip/irq-sun4i.c | 47 +++++++++++++++++++++++++++++++++++----------
1 file changed, 37 insertions(+), 10 deletions(-)

diff --git a/drivers/irqchip/irq-sun4i.c b/drivers/irqchip/irq-sun4i.c
index 507f4e3..fb78d66 100644
--- a/drivers/irqchip/irq-sun4i.c
+++ b/drivers/irqchip/irq-sun4i.c
@@ -32,6 +32,8 @@
#define SUN4I_IRQ_MASK_REG(data, x) ((data)->mask_reg_offset + 0x4 * x)
#define SUN4I_IRQ_ENABLE_REG_OFFSET 0x40
#define SUN4I_IRQ_MASK_REG_OFFSET 0x50
+#define SUNIV_IRQ_ENABLE_REG_OFFSET 0x20
+#define SUNIV_IRQ_MASK_REG_OFFSET 0x30

struct sun4i_irq_chip_data {
void __iomem *irq_base;
@@ -105,15 +107,6 @@ static const struct irq_domain_ops sun4i_irq_ops = {
static int __init sun4i_of_init(struct device_node *node,
struct device_node *parent)
{
- irq_ic_data = kzalloc(sizeof(struct sun4i_irq_chip_data), GFP_KERNEL);
- if (!irq_ic_data) {
- pr_err("kzalloc failed!\n");
- return -ENOMEM;
- }
-
- irq_ic_data->enable_reg_offset = SUN4I_IRQ_ENABLE_REG_OFFSET;
- irq_ic_data->mask_reg_offset = SUN4I_IRQ_MASK_REG_OFFSET;
-
irq_ic_data->irq_base = of_iomap(node, 0);
if (!irq_ic_data->irq_base)
panic("%pOF: unable to map IC registers\n",
@@ -149,7 +142,41 @@ static int __init sun4i_of_init(struct device_node *node,

return 0;
}
-IRQCHIP_DECLARE(allwinner_sun4i_ic, "allwinner,sun4i-a10-ic", sun4i_of_init);
+
+static int __init sun4i_ic_of_init(struct device_node *node,
+ struct device_node *parent)
+{
+ irq_ic_data = kzalloc(sizeof(struct sun4i_irq_chip_data), GFP_KERNEL);
+ if (!irq_ic_data) {
+ pr_err("kzalloc failed!\n");
+ return -ENOMEM;
+ }
+
+ irq_ic_data->enable_reg_offset = SUN4I_IRQ_ENABLE_REG_OFFSET;
+ irq_ic_data->mask_reg_offset = SUN4I_IRQ_MASK_REG_OFFSET;
+
+ return sun4i_of_init(node, parent);
+}
+
+IRQCHIP_DECLARE(allwinner_sun4i_ic, "allwinner,sun4i-a10-ic", sun4i_ic_of_init);
+
+static int __init suniv_ic_of_init(struct device_node *node,
+ struct device_node *parent)
+{
+ irq_ic_data = kzalloc(sizeof(struct sun4i_irq_chip_data), GFP_KERNEL);
+ if (!irq_ic_data) {
+ pr_err("kzalloc failed!\n");
+ return -ENOMEM;
+ }
+
+ irq_ic_data->enable_reg_offset = SUNIV_IRQ_ENABLE_REG_OFFSET;
+ irq_ic_data->mask_reg_offset = SUNIV_IRQ_MASK_REG_OFFSET;
+
+ return sun4i_of_init(node, parent);
+}
+
+IRQCHIP_DECLARE(allwinner_sunvi_ic, "allwinner,suniv-f1c100s-ic",
+ suniv_ic_of_init);

static void __exception_irq_entry sun4i_handle_irq(struct pt_regs *regs)
{
--
2.7.4