[RFC PATCH v4 06/17] irqchip/sun4i: Move IC specific register offsets to struct

Mesih Kilinc
2018-11-25T07:44:01Z

This patch moves IC specific register offsets to sun4i_irq_chip_data
struct in order to support different chips.

Signed-off-by: Mesih Kilinc <mesihkilinc@gmail.com>
---
drivers/irqchip/irq-sun4i.c | 33 +++++++++++++++++++++------------
1 file changed, 21 insertions(+), 12 deletions(-)

diff --git a/drivers/irqchip/irq-sun4i.c b/drivers/irqchip/irq-sun4i.c
index 0c32506..507f4e3 100644
--- a/drivers/irqchip/irq-sun4i.c
+++ b/drivers/irqchip/irq-sun4i.c
@@ -28,12 +28,16 @@
#define SUN4I_IRQ_NMI_CTRL_REG 0x0c
#define SUN4I_IRQ_PENDING_REG(x) (0x10 + 0x4 * x)
#define SUN4I_IRQ_FIQ_PENDING_REG(x) (0x20 + 0x4 * x)
-#define SUN4I_IRQ_ENABLE_REG(x) (0x40 + 0x4 * x)
-#define SUN4I_IRQ_MASK_REG(x) (0x50 + 0x4 * x)
+#define SUN4I_IRQ_ENABLE_REG(data, x) ((data)->enable_reg_offset + 0x4 * x)
+#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

struct sun4i_irq_chip_data {
void __iomem *irq_base;
struct irq_domain *irq_domain;
+ u32 enable_reg_offset;
+ u32 mask_reg_offset;
};

static struct sun4i_irq_chip_data *irq_ic_data;
@@ -57,9 +61,10 @@ static void sun4i_irq_mask(struct irq_data *irqd)
int reg = irq / 32;
u32 val;

- val = readl(irq_ic_data->irq_base + SUN4I_IRQ_ENABLE_REG(reg));
+ val = readl(irq_ic_data->irq_base +
+ SUN4I_IRQ_ENABLE_REG(irq_ic_data, reg));
writel(val & ~(1 << irq_off),
- irq_ic_data->irq_base + SUN4I_IRQ_ENABLE_REG(reg));
+ irq_ic_data->irq_base + SUN4I_IRQ_ENABLE_REG(irq_ic_data, reg));
}

static void sun4i_irq_unmask(struct irq_data *irqd)
@@ -69,9 +74,10 @@ static void sun4i_irq_unmask(struct irq_data *irqd)
int reg = irq / 32;
u32 val;

- val = readl(irq_ic_data->irq_base + SUN4I_IRQ_ENABLE_REG(reg));
+ val = readl(irq_ic_data->irq_base +
+ SUN4I_IRQ_ENABLE_REG(irq_ic_data, reg));
writel(val | (1 << irq_off),
- irq_ic_data->irq_base + SUN4I_IRQ_ENABLE_REG(reg));
+ irq_ic_data->irq_base + SUN4I_IRQ_ENABLE_REG(irq_ic_data, reg));
}

static struct irq_chip sun4i_irq_chip = {
@@ -105,20 +111,23 @@ static int __init sun4i_of_init(struct device_node *node,
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",
node);

/* Disable all interrupts */
- writel(0, irq_ic_data->irq_base + SUN4I_IRQ_ENABLE_REG(0));
- writel(0, irq_ic_data->irq_base + SUN4I_IRQ_ENABLE_REG(1));
- writel(0, irq_ic_data->irq_base + SUN4I_IRQ_ENABLE_REG(2));
+ writel(0, irq_ic_data->irq_base + SUN4I_IRQ_ENABLE_REG(irq_ic_data, 0));
+ writel(0, irq_ic_data->irq_base + SUN4I_IRQ_ENABLE_REG(irq_ic_data, 1));
+ writel(0, irq_ic_data->irq_base + SUN4I_IRQ_ENABLE_REG(irq_ic_data, 2));

/* Unmask all the interrupts, ENABLE_REG(x) is used for masking */
- writel(0, irq_ic_data->irq_base + SUN4I_IRQ_MASK_REG(0));
- writel(0, irq_ic_data->irq_base + SUN4I_IRQ_MASK_REG(1));
- writel(0, irq_ic_data->irq_base + SUN4I_IRQ_MASK_REG(2));
+ writel(0, irq_ic_data->irq_base + SUN4I_IRQ_MASK_REG(irq_ic_data, 0));
+ writel(0, irq_ic_data->irq_base + SUN4I_IRQ_MASK_REG(irq_ic_data, 1));
+ writel(0, irq_ic_data->irq_base + SUN4I_IRQ_MASK_REG(irq_ic_data, 2));

/* Clear all the pending interrupts */
writel(0xffffffff, irq_ic_data->irq_base + SUN4I_IRQ_PENDING_REG(0));
--
2.7.4