[PATCH v5 2/7] gpio: ep93xx: Fix single irqchip with multi gpiochips
From: Nikita Shubin <nikita.shubin@maquefel.me>
Date: 2021-02-08 09:23:31
Also in:
lkml
Subsystem:
gpio subsystem, the rest · Maintainers:
Linus Walleij, Bartosz Golaszewski, Linus Torvalds
Fixes the following warnings which results in interrupts disabled on
port B/F:
gpio gpiochip1: (B): detected irqchip that is shared with multiple gpiochips: please fix the driver.
gpio gpiochip5: (F): detected irqchip that is shared with multiple gpiochips: please fix the driver.
- added separate irqchip for each interrupt capable gpiochip
- provided unique names for each irqchip
Fixes: d2b091961510 ("gpio: ep93xx: Pass irqchip when adding gpiochip")
Signed-off-by: Nikita Shubin <nikita.shubin@maquefel.me>
---
v4->v5:
- generate IRQ chip's names dynamicaly from label
---
drivers/gpio/gpio-ep93xx.c | 17 ++++++++++++++++-
1 file changed, 16 insertions(+), 1 deletion(-)
diff --git a/drivers/gpio/gpio-ep93xx.c b/drivers/gpio/gpio-ep93xx.c
index 64d6c2b4282e..3d8eb8769470 100644
--- a/drivers/gpio/gpio-ep93xx.c
+++ b/drivers/gpio/gpio-ep93xx.c@@ -38,6 +38,7 @@ #define EP93XX_GPIO_F_IRQ_BASE 80 struct ep93xx_gpio_irq_chip { + struct irq_chip ic; u8 irq_offset; u8 int_unmasked; u8 int_enabled;
@@ -331,6 +332,16 @@ static int ep93xx_gpio_f_to_irq(struct gpio_chip *gc, unsigned offset) return EP93XX_GPIO_F_IRQ_BASE + offset; } +static void ep93xx_init_irq_chip(struct device *dev, struct irq_chip *ic, const char *label) +{ + ic->name = devm_kasprintf(dev, GFP_KERNEL, "gpio-irq-%s", label); + ic->irq_ack = ep93xx_gpio_irq_ack; + ic->irq_mask_ack = ep93xx_gpio_irq_mask_ack; + ic->irq_mask = ep93xx_gpio_irq_mask; + ic->irq_unmask = ep93xx_gpio_irq_unmask; + ic->irq_set_type = ep93xx_gpio_irq_type; +} + static int ep93xx_gpio_add_bank(struct ep93xx_gpio_chip *egc, struct platform_device *pdev, struct ep93xx_gpio *epg,
@@ -352,6 +363,8 @@ static int ep93xx_gpio_add_bank(struct ep93xx_gpio_chip *egc, girq = &gc->irq; if (bank->has_irq || bank->has_hierarchical_irq) { + struct irq_chip *ic; + gc->set_config = ep93xx_gpio_set_config; egc->eic = devm_kcalloc(dev, 1, sizeof(*egc->eic),
@@ -359,7 +372,9 @@ static int ep93xx_gpio_add_bank(struct ep93xx_gpio_chip *egc, if (!egc->eic) return -ENOMEM; egc->eic->irq_offset = bank->irq; - girq->chip = &ep93xx_gpio_irq_chip; + ic = &egc->eic->ic; + ep93xx_init_irq_chip(dev, ic, bank->label); + girq->chip = ic; } if (bank->has_irq) {
--
2.26.2