[PATCH v2 2/4] pinctrl: intel: refine irq_set_type hook

Raag Jadav
2023-06-09T08:27:12Z

Utilize a temporary variable for common shift operation
inside ->irq_set_type() hook and improve readability.
While at it, simplify if-else-if chain and save a few bytes.

add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-16 (-16)
Function old new delta
intel_gpio_irq_type 317 301 -16
Total: Before=10469, After=10453, chg -0.15%

Signed-off-by: Raag Jadav <raag.jadav@intel.com>
---
drivers/pinctrl/intel/pinctrl-intel.c | 19 ++++++++++---------
1 file changed, 10 insertions(+), 9 deletions(-)

diff --git a/drivers/pinctrl/intel/pinctrl-intel.c b/drivers/pinctrl/intel/pinctrl-intel.c
index e8adf2580321..3f78066b1837 100644
--- a/drivers/pinctrl/intel/pinctrl-intel.c
+++ b/drivers/pinctrl/intel/pinctrl-intel.c
@@ -1128,8 +1128,8 @@ static int intel_gpio_irq_type(struct irq_data *d, unsigned int type)
struct intel_pinctrl *pctrl = gpiochip_get_data(gc);
unsigned int pin = intel_gpio_to_pin(pctrl, irqd_to_hwirq(d), NULL, NULL);
unsigned long flags;
+ u32 value, rxevcfg;
void __iomem *reg;
- u32 value;

reg = intel_get_padcfg(pctrl, pin, PADCFG0);
if (!reg)
@@ -1150,23 +1150,24 @@ static int intel_gpio_irq_type(struct irq_data *d, unsigned int type)
intel_gpio_set_gpio_mode(reg);

value = readl(reg);
-
value &= ~(PADCFG0_RXEVCFG_MASK | PADCFG0_RXINV);

if ((type & IRQ_TYPE_EDGE_BOTH) == IRQ_TYPE_EDGE_BOTH) {
- value |= PADCFG0_RXEVCFG_EDGE_BOTH << PADCFG0_RXEVCFG_SHIFT;
+ rxevcfg = PADCFG0_RXEVCFG_EDGE_BOTH;
} else if (type & IRQ_TYPE_EDGE_FALLING) {
- value |= PADCFG0_RXEVCFG_EDGE << PADCFG0_RXEVCFG_SHIFT;
- value |= PADCFG0_RXINV;
+ rxevcfg = PADCFG0_RXEVCFG_EDGE;
} else if (type & IRQ_TYPE_EDGE_RISING) {
- value |= PADCFG0_RXEVCFG_EDGE << PADCFG0_RXEVCFG_SHIFT;
+ rxevcfg = PADCFG0_RXEVCFG_EDGE;
} else if (type & IRQ_TYPE_LEVEL_MASK) {
- if (type & IRQ_TYPE_LEVEL_LOW)
- value |= PADCFG0_RXINV;
+ rxevcfg = PADCFG0_RXEVCFG_LEVEL;
} else {
- value |= PADCFG0_RXEVCFG_DISABLED << PADCFG0_RXEVCFG_SHIFT;
+ rxevcfg = PADCFG0_RXEVCFG_DISABLED;
}

+ if (type == IRQ_TYPE_EDGE_FALLING || type == IRQ_TYPE_LEVEL_LOW)
+ value |= PADCFG0_RXINV;
+
+ value |= rxevcfg << PADCFG0_RXEVCFG_SHIFT;
writel(value, reg);

if (type & IRQ_TYPE_EDGE_BOTH)
--
2.17.1