[PATCH v3 1/7] pinctrl: sunxi: refactor irq related register function to have desc

[Icenowy Zheng]

As the new H6 SoC has holes in the IRQ registers, refactor the IRQ
related register function for getting the full pinctrl desc structure.

Signed-off-by: Icenowy Zheng <icenowy@xxxxxxx>
---
New patch in v3.

 drivers/pinctrl/sunxi/pinctrl-sunxi.c | 18 ++++++++----------
 drivers/pinctrl/sunxi/pinctrl-sunxi.h | 29 +++++++++++++++++++++--------
 2 files changed, 29 insertions(+), 18 deletions(-)

diff --git a/drivers/pinctrl/sunxi/pinctrl-sunxi.c b/drivers/pinctrl/sunxi/pinctrl-sunxi.c
index 341312d66512..31bd99f7df50 100644
--- a/drivers/pinctrl/sunxi/pinctrl-sunxi.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.c
@@ -835,7 +835,7 @@ static void sunxi_pinctrl_irq_release_resources(struct irq_data *d)
 static int sunxi_pinctrl_irq_set_type(struct irq_data *d, unsigned int type)
 {
 	struct sunxi_pinctrl *pctl = irq_data_get_irq_chip_data(d);
-	u32 reg = sunxi_irq_cfg_reg(d->hwirq, pctl->desc->irq_bank_base);
+	u32 reg = sunxi_irq_cfg_reg(d->hwirq, pctl->desc);
 	u8 index = sunxi_irq_cfg_offset(d->hwirq);
 	unsigned long flags;
 	u32 regval;
@@ -882,8 +882,7 @@ static int sunxi_pinctrl_irq_set_type(struct irq_data *d, unsigned int type)
 static void sunxi_pinctrl_irq_ack(struct irq_data *d)
 {
 	struct sunxi_pinctrl *pctl = irq_data_get_irq_chip_data(d);
-	u32 status_reg = sunxi_irq_status_reg(d->hwirq,
-					      pctl->desc->irq_bank_base);
+	u32 status_reg = sunxi_irq_status_reg(d->hwirq, pctl->desc);
 	u8 status_idx = sunxi_irq_status_offset(d->hwirq);
 
 	/* Clear the IRQ */
@@ -893,7 +892,7 @@ static void sunxi_pinctrl_irq_ack(struct irq_data *d)
 static void sunxi_pinctrl_irq_mask(struct irq_data *d)
 {
 	struct sunxi_pinctrl *pctl = irq_data_get_irq_chip_data(d);
-	u32 reg = sunxi_irq_ctrl_reg(d->hwirq, pctl->desc->irq_bank_base);
+	u32 reg = sunxi_irq_ctrl_reg(d->hwirq, pctl->desc);
 	u8 idx = sunxi_irq_ctrl_offset(d->hwirq);
 	unsigned long flags;
 	u32 val;
@@ -910,7 +909,7 @@ static void sunxi_pinctrl_irq_mask(struct irq_data *d)
 static void sunxi_pinctrl_irq_unmask(struct irq_data *d)
 {
 	struct sunxi_pinctrl *pctl = irq_data_get_irq_chip_data(d);
-	u32 reg = sunxi_irq_ctrl_reg(d->hwirq, pctl->desc->irq_bank_base);
+	u32 reg = sunxi_irq_ctrl_reg(d->hwirq, pctl->desc);
 	u8 idx = sunxi_irq_ctrl_offset(d->hwirq);
 	unsigned long flags;
 	u32 val;
@@ -1002,7 +1001,7 @@ static void sunxi_pinctrl_irq_handler(struct irq_desc *desc)
 	if (bank == pctl->desc->irq_banks)
 		return;
 
-	reg = sunxi_irq_status_reg_from_bank(bank, pctl->desc->irq_bank_base);
+	reg = sunxi_irq_status_reg_from_bank(bank, pctl->desc);
 	val = readl(pctl->membase + reg);
 
 	if (val) {
@@ -1234,8 +1233,7 @@ static int sunxi_pinctrl_setup_debounce(struct sunxi_pinctrl *pctl,
 
 		writel(src | div << 4,
 		       pctl->membase +
-		       sunxi_irq_debounce_reg_from_bank(i,
-							pctl->desc->irq_bank_base));
+		       sunxi_irq_debounce_reg_from_bank(i, pctl->desc));
 	}
 
 	return 0;
@@ -1411,10 +1409,10 @@ int sunxi_pinctrl_init_with_variant(struct platform_device *pdev,
 	for (i = 0; i < pctl->desc->irq_banks; i++) {
 		/* Mask and clear all IRQs before registering a handler */
 		writel(0, pctl->membase + sunxi_irq_ctrl_reg_from_bank(i,
-						pctl->desc->irq_bank_base));
+						pctl->desc));
 		writel(0xffffffff,
 		       pctl->membase + sunxi_irq_status_reg_from_bank(i,
-						pctl->desc->irq_bank_base));
+						pctl->desc));
 
 		irq_set_chained_handler_and_data(pctl->irq[i],
 						 sunxi_pinctrl_irq_handler,
diff --git a/drivers/pinctrl/sunxi/pinctrl-sunxi.h b/drivers/pinctrl/sunxi/pinctrl-sunxi.h
index 11b128f54ed2..909ca1504b61 100644
--- a/drivers/pinctrl/sunxi/pinctrl-sunxi.h
+++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.h
@@ -263,8 +263,10 @@ static inline u32 sunxi_pull_offset(u16 pin)
 	return pin_num * PULL_PINS_BITS;
 }
 
-static inline u32 sunxi_irq_cfg_reg(u16 irq, unsigned bank_base)
+static inline u32 sunxi_irq_cfg_reg(u16 irq,
+				    const struct sunxi_pinctrl_desc *desc)
 {
+	unsigned bank_base = desc->irq_bank_base;
 	u8 bank = irq / IRQ_PER_BANK;
 	u8 reg = (irq % IRQ_PER_BANK) / IRQ_CFG_IRQ_PER_REG * 0x04;
 
@@ -277,16 +279,20 @@ static inline u32 sunxi_irq_cfg_offset(u16 irq)
 	return irq_num * IRQ_CFG_IRQ_BITS;
 }
 
-static inline u32 sunxi_irq_ctrl_reg_from_bank(u8 bank, unsigned bank_base)
+static inline u32 sunxi_irq_ctrl_reg_from_bank(u8 bank,
+					       const struct sunxi_pinctrl_desc *desc)
 {
+	unsigned bank_base = desc->irq_bank_base;
+
 	return IRQ_CTRL_REG + (bank_base + bank) * IRQ_MEM_SIZE;
 }
 
-static inline u32 sunxi_irq_ctrl_reg(u16 irq, unsigned bank_base)
+static inline u32 sunxi_irq_ctrl_reg(u16 irq,
+				     const struct sunxi_pinctrl_desc *desc)
 {
 	u8 bank = irq / IRQ_PER_BANK;
 
-	return sunxi_irq_ctrl_reg_from_bank(bank, bank_base);
+	return sunxi_irq_ctrl_reg_from_bank(bank, desc);
 }
 
 static inline u32 sunxi_irq_ctrl_offset(u16 irq)
@@ -295,21 +301,28 @@ static inline u32 sunxi_irq_ctrl_offset(u16 irq)
 	return irq_num * IRQ_CTRL_IRQ_BITS;
 }
 
-static inline u32 sunxi_irq_debounce_reg_from_bank(u8 bank, unsigned bank_base)
+static inline u32 sunxi_irq_debounce_reg_from_bank(u8 bank,
+						   const struct sunxi_pinctrl_desc *desc)
 {
+	unsigned bank_base = desc->irq_bank_base;
+
 	return IRQ_DEBOUNCE_REG + (bank_base + bank) * IRQ_MEM_SIZE;
 }
 
-static inline u32 sunxi_irq_status_reg_from_bank(u8 bank, unsigned bank_base)
+static inline u32 sunxi_irq_status_reg_from_bank(u8 bank,
+						 const struct sunxi_pinctrl_desc *desc)
 {
+	unsigned bank_base = desc->irq_bank_base;
+
 	return IRQ_STATUS_REG + (bank_base + bank) * IRQ_MEM_SIZE;
 }
 
-static inline u32 sunxi_irq_status_reg(u16 irq, unsigned bank_base)
+static inline u32 sunxi_irq_status_reg(u16 irq,
+				       const struct sunxi_pinctrl_desc *desc)
 {
 	u8 bank = irq / IRQ_PER_BANK;
 
-	return sunxi_irq_status_reg_from_bank(bank, bank_base);
+	return sunxi_irq_status_reg_from_bank(bank, desc);
 }
 
 static inline u32 sunxi_irq_status_offset(u16 irq)
-- 
2.15.1