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Subject[PATCH v3 3/3] pinctrl: rockchip: create irq mapping in gpio_to_irq
Date
Remove totally irq mappings create in probe, the gpio irq mapping will
be created when do
gpio_to_irq ->
rockchip_gpio_to_irq ->
irq_create_mapping

This patch can speed up system boot on, also abandon many unused irq
mappings' create.

Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
---
drivers/pinctrl/pinctrl-rockchip.c | 28 ++++++++++++----------------
1 file changed, 12 insertions(+), 16 deletions(-)

diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c
index a2f361aa6d05..70dc03af5699 100644
--- a/drivers/pinctrl/pinctrl-rockchip.c
+++ b/drivers/pinctrl/pinctrl-rockchip.c
@@ -3198,7 +3198,7 @@ static void rockchip_irq_demux(struct irq_desc *desc)

irq = __ffs(pend);
pend &= ~BIT(irq);
- virq = irq_linear_revmap(bank->domain, irq);
+ virq = irq_find_mapping(bank->domain, irq);

if (!virq) {
dev_err(bank->drvdata->dev, "unmapped irq %d\n", irq);
@@ -3377,7 +3377,7 @@ static int rockchip_interrupts_register(struct platform_device *pdev,
unsigned int clr = IRQ_NOREQUEST | IRQ_NOPROBE | IRQ_NOAUTOEN;
struct irq_chip_generic *gc;
int ret;
- int i, j;
+ int i;

for (i = 0; i < ctrl->nr_banks; ++i, ++bank) {
if (!bank->valid) {
@@ -3404,7 +3404,7 @@ static int rockchip_interrupts_register(struct platform_device *pdev,

ret = irq_alloc_domain_generic_chips(bank->domain, 32, 1,
"rockchip_gpio_irq", handle_level_irq,
- clr, 0, IRQ_GC_INIT_MASK_CACHE);
+ clr, 0, 0);
if (ret) {
dev_err(&pdev->dev, "could not alloc generic chips for bank %s\n",
bank->name);
@@ -3413,14 +3413,6 @@ static int rockchip_interrupts_register(struct platform_device *pdev,
continue;
}

- /*
- * Linux assumes that all interrupts start out disabled/masked.
- * Our driver only uses the concept of masked and always keeps
- * things enabled, so for us that's all masked and all enabled.
- */
- writel_relaxed(0xffffffff, bank->reg_base + GPIO_INTMASK);
- writel_relaxed(0xffffffff, bank->reg_base + GPIO_INTEN);
-
gc = irq_get_domain_generic_chip(bank->domain, 0);
gc->reg_base = bank->reg_base;
gc->private = bank;
@@ -3437,13 +3429,17 @@ static int rockchip_interrupts_register(struct platform_device *pdev,
gc->chip_types[0].chip.irq_set_type = rockchip_irq_set_type;
gc->wake_enabled = IRQ_MSK(bank->nr_pins);

+ /*
+ * Linux assumes that all interrupts start out disabled/masked.
+ * Our driver only uses the concept of masked and always keeps
+ * things enabled, so for us that's all masked and all enabled.
+ */
+ writel_relaxed(0xffffffff, bank->reg_base + GPIO_INTMASK);
+ writel_relaxed(0xffffffff, bank->reg_base + GPIO_INTEN);
+ gc->mask_cache = 0xffffffff;
+
irq_set_chained_handler_and_data(bank->irq,
rockchip_irq_demux, bank);
-
- /* map the gpio irqs here, when the clock is still running */
- for (j = 0 ; j < 32 ; j++)
- irq_create_mapping(bank->domain, j);
-
clk_disable(bank->clk);
}

--
2.17.1


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