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pinctrl: armada-37xx: Convert to immutable irq_chip 

Convert the driver to immutable irq-chip with a bit of
intuition.

Cc: Marc Zyngier <maz@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20230403-immutable-irqchips-v1-3-503788a7f6e6@linaro.org
This commit is contained in:
Linus Walleij 2023-04-04 11:43:05 +02:00
parent bb7e64e60e
commit dccdc09199
1 changed files with 24 additions and 10 deletions
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34
drivers/pinctrl/mvebu/pinctrl-armada-37xx.c
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@ -23,6 +23,7 @@
#include <linux/platform_device.h>
#include <linux/property.h>
#include <linux/regmap.h>
#include <linux/seq_file.h>
#include <linux/slab.h>
#include <linux/string_helpers.h>
@ -101,7 +102,6 @@ struct armada_37xx_pinctrl {
const struct armada_37xx_pin_data *data;
struct device *dev;
struct gpio_chip gpio_chip;
struct irq_chip irq_chip;
raw_spinlock_t irq_lock;
struct pinctrl_desc pctl;
struct pinctrl_dev *pctl_dev;
@ -548,6 +548,7 @@ static void armada_37xx_irq_mask(struct irq_data *d)
val = readl(info->base + reg);
writel(val & ~d->mask, info->base + reg);
raw_spin_unlock_irqrestore(&info->irq_lock, flags);
gpiochip_disable_irq(chip, irqd_to_hwirq(d));
}
static void armada_37xx_irq_unmask(struct irq_data *d)
@ -557,6 +558,7 @@ static void armada_37xx_irq_unmask(struct irq_data *d)
u32 val, reg = IRQ_EN;
unsigned long flags;
gpiochip_enable_irq(chip, irqd_to_hwirq(d));
armada_37xx_irq_update_reg(&reg, d);
raw_spin_lock_irqsave(&info->irq_lock, flags);
val = readl(info->base + reg);
@ -729,11 +731,30 @@ static unsigned int armada_37xx_irq_startup(struct irq_data *d)
return 0;
}
static void armada_37xx_irq_print_chip(struct irq_data *d, struct seq_file *p)
{
struct gpio_chip *chip = irq_data_get_irq_chip_data(d);
struct armada_37xx_pinctrl *info = gpiochip_get_data(chip);
seq_printf(p, info->data->name);
}
static const struct irq_chip armada_37xx_irqchip = {
.irq_ack = armada_37xx_irq_ack,
.irq_mask = armada_37xx_irq_mask,
.irq_unmask = armada_37xx_irq_unmask,
.irq_set_wake = armada_37xx_irq_set_wake,
.irq_set_type = armada_37xx_irq_set_type,
.irq_startup = armada_37xx_irq_startup,
.irq_print_chip = armada_37xx_irq_print_chip,
.flags = IRQCHIP_IMMUTABLE,
GPIOCHIP_IRQ_RESOURCE_HELPERS,
};
static int armada_37xx_irqchip_register(struct platform_device *pdev,
struct armada_37xx_pinctrl *info)
{
struct gpio_chip *gc = &info->gpio_chip;
struct irq_chip *irqchip = &info->irq_chip;
struct gpio_irq_chip *girq = &gc->irq;
struct device_node *np = to_of_node(gc->fwnode);
struct device *dev = &pdev->dev;
@ -751,14 +772,7 @@ static int armada_37xx_irqchip_register(struct platform_device *pdev,
if (IS_ERR(info->base))
return PTR_ERR(info->base);
irqchip->irq_ack = armada_37xx_irq_ack;
irqchip->irq_mask = armada_37xx_irq_mask;
irqchip->irq_unmask = armada_37xx_irq_unmask;
irqchip->irq_set_wake = armada_37xx_irq_set_wake;
irqchip->irq_set_type = armada_37xx_irq_set_type;
irqchip->irq_startup = armada_37xx_irq_startup;
irqchip->name = info->data->name;
girq->chip = irqchip;
gpio_irq_chip_set_chip(girq, &armada_37xx_irqchip);
girq->parent_handler = armada_37xx_irq_handler;
/*
* Many interrupts are connected to the parent interrupt