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gpio: crystalcove: make irq_chip immutable

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Since recently, the kernel is nagging about mutable irq_chips:

   "not an immutable chip, please consider fixing it!"

Drop the unneeded copy, flag it as IRQCHIP_IMMUTABLE, add the new
helper functions and call the appropriate gpiolib functions.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
This commit is contained in:
Andy Shevchenko 2022-05-12 20:39:21 +03:00
parent f2906aa863
commit 386cbe7f1b
1 changed files with 25 additions and 15 deletions
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40
drivers/gpio/gpio-crystalcove.c
View file

@ -15,6 +15,7 @@
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/seq_file.h>
#include <linux/types.h>
#define CRYSTALCOVE_GPIO_NUM 16
#define CRYSTALCOVE_VGPIO_NUM 95
@ -238,34 +239,43 @@ static void crystalcove_bus_sync_unlock(struct irq_data *data)
static void crystalcove_irq_unmask(struct irq_data *data)
{
struct crystalcove_gpio *cg =
gpiochip_get_data(irq_data_get_irq_chip_data(data));
struct gpio_chip *gc = irq_data_get_irq_chip_data(data);
struct crystalcove_gpio *cg = gpiochip_get_data(gc);
irq_hw_number_t hwirq = irqd_to_hwirq(data);
if (data->hwirq < CRYSTALCOVE_GPIO_NUM) {
cg->set_irq_mask = false;
cg->update |= UPDATE_IRQ_MASK;
}
if (hwirq >= CRYSTALCOVE_GPIO_NUM)
return;
gpiochip_enable_irq(gc, hwirq);
cg->set_irq_mask = false;
cg->update |= UPDATE_IRQ_MASK;
}
static void crystalcove_irq_mask(struct irq_data *data)
{
struct crystalcove_gpio *cg =
gpiochip_get_data(irq_data_get_irq_chip_data(data));
struct gpio_chip *gc = irq_data_get_irq_chip_data(data);
struct crystalcove_gpio *cg = gpiochip_get_data(gc);
irq_hw_number_t hwirq = irqd_to_hwirq(data);
if (data->hwirq < CRYSTALCOVE_GPIO_NUM) {
cg->set_irq_mask = true;
cg->update |= UPDATE_IRQ_MASK;
}
if (hwirq >= CRYSTALCOVE_GPIO_NUM)
return;
cg->set_irq_mask = true;
cg->update |= UPDATE_IRQ_MASK;
gpiochip_disable_irq(gc, hwirq);
}
static struct irq_chip crystalcove_irqchip = {
static const struct irq_chip crystalcove_irqchip = {
.name = "Crystal Cove",
.irq_mask = crystalcove_irq_mask,
.irq_unmask = crystalcove_irq_unmask,
.irq_set_type = crystalcove_irq_type,
.irq_bus_lock = crystalcove_bus_lock,
.irq_bus_sync_unlock = crystalcove_bus_sync_unlock,
.flags = IRQCHIP_SKIP_SET_WAKE,
.flags = IRQCHIP_SKIP_SET_WAKE | IRQCHIP_IMMUTABLE,
GPIOCHIP_IRQ_RESOURCE_HELPERS,
};
static irqreturn_t crystalcove_gpio_irq_handler(int irq, void *data)
@ -353,7 +363,7 @@ static int crystalcove_gpio_probe(struct platform_device *pdev)
cg->regmap = pmic->regmap;
girq = &cg->chip.irq;
girq->chip = &crystalcove_irqchip;
gpio_irq_chip_set_chip(girq, &crystalcove_irqchip);
/* This will let us handle the parent IRQ in the driver */
girq->parent_handler = NULL;
girq->num_parents = 0;