The Allwinner H6 SoC have its pin controllers with the first IRQ-capable
GPIO bank at IRQ bank 1 and the second bank at IRQ bank 5. This
situation cannot be processed with the current pinctrl IRQ code, as it
only expects a offset to all IRQ banks.

Update the code to use a logical IRQ bank to hardware IRQ bank map, so
the new situation in H6 main pin controller can be processed. The old
special situation which uses a constant offset (on A33 and V3s, both
with a offset of 1) can be also processed with the new code.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
---
Changes in v3:
- change for the refactor in the new PATCH 1.

No changes in v2.

 drivers/pinctrl/sunxi/pinctrl-sun8i-a33.c |  4 +++-
 drivers/pinctrl/sunxi/pinctrl-sun8i-v3s.c |  4 +++-
 drivers/pinctrl/sunxi/pinctrl-sunxi.h     | 29 +++++++++++++++++------------
 3 files changed, 23 insertions(+), 14 deletions(-)

diff --git a/drivers/pinctrl/sunxi/pinctrl-sun8i-a33.c b/drivers/pinctrl/sunxi/pinctrl-sun8i-a33.c
index da387211a75e..f043afa1aac5 100644
--- a/drivers/pinctrl/sunxi/pinctrl-sun8i-a33.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sun8i-a33.c

@@ -481,11 +481,13 @@ static const struct sunxi_desc_pin sun8i_a33_pins[] = {
 		  SUNXI_FUNCTION(0x3, "uart3")),	/* CTS */
 };
 
+static const unsigned int sun8i_a33_pinctrl_irq_bank_map[] = { 1, 2 };
+
 static const struct sunxi_pinctrl_desc sun8i_a33_pinctrl_data = {
 	.pins = sun8i_a33_pins,
 	.npins = ARRAY_SIZE(sun8i_a33_pins),
 	.irq_banks = 2,
-	.irq_bank_base = 1,
+	.irq_bank_map = sun8i_a33_pinctrl_irq_bank_map,
 	.disable_strict_mode = true,
 };
 

diff --git a/drivers/pinctrl/sunxi/pinctrl-sun8i-v3s.c b/drivers/pinctrl/sunxi/pinctrl-sun8i-v3s.c
index 496ba34e1f5f..6704ce8e5e3d 100644
--- a/drivers/pinctrl/sunxi/pinctrl-sun8i-v3s.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sun8i-v3s.c

@@ -293,11 +293,13 @@ static const struct sunxi_desc_pin sun8i_v3s_pins[] = {
 		  SUNXI_FUNCTION_IRQ_BANK(0x6, 1, 5)),	/* PG_EINT5 */
 };
 
+static const unsigned int sun8i_v3s_pinctrl_irq_bank_map[] = { 1, 2 };
+
 static const struct sunxi_pinctrl_desc sun8i_v3s_pinctrl_data = {
 	.pins = sun8i_v3s_pins,
 	.npins = ARRAY_SIZE(sun8i_v3s_pins),
 	.irq_banks = 2,
-	.irq_bank_base = 1,
+	.irq_bank_map = sun8i_v3s_pinctrl_irq_bank_map,
 	.irq_read_needs_mux = true
 };
 

diff --git a/drivers/pinctrl/sunxi/pinctrl-sunxi.h b/drivers/pinctrl/sunxi/pinctrl-sunxi.h
index 909ca1504b61..36502cbef6c2 100644
--- a/drivers/pinctrl/sunxi/pinctrl-sunxi.h
+++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.h

@@ -110,7 +110,7 @@ struct sunxi_pinctrl_desc {
 	int				npins;
 	unsigned			pin_base;
 	unsigned			irq_banks;
-	unsigned			irq_bank_base;
+	const unsigned int		*irq_bank_map;
 	bool				irq_read_needs_mux;
 	bool				disable_strict_mode;
 };

@@ -263,14 +263,23 @@ static inline u32 sunxi_pull_offset(u16 pin)
 	return pin_num * PULL_PINS_BITS;
 }
 
+static inline u32 sunxi_irq_hw_bank_num(u8 bank,
+					const struct sunxi_pinctrl_desc *desc)
+{
+	if (!desc->irq_bank_map)
+		return bank;
+	else
+		return desc->irq_bank_map[bank];
+}
+