diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2023-03-20 12:55:15 +0300 |
|---|---|---|
| committer | Bartosz Golaszewski <bartosz.golaszewski@linaro.org> | 2023-03-23 16:31:18 +0300 |
| commit | b4510f8fd5d0e9afa777f115871f5d522540c417 (patch) | |
| tree | 5547208bdbdc65a3ea7da5777a0f92008060d6d7 /drivers/gpio/gpio-xilinx.c | |
| parent | 9c1282b7459e14e884bb768373f212e9e3b9cd5a (diff) | |
| download | linux-b4510f8fd5d0e9afa777f115871f5d522540c417.tar.xz | |
gpio: xilinx: 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>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Diffstat (limited to 'drivers/gpio/gpio-xilinx.c')
| -rw-r--r-- | drivers/gpio/gpio-xilinx.c | 23 |
1 files changed, 15 insertions, 8 deletions
diff --git a/drivers/gpio/gpio-xilinx.c b/drivers/gpio/gpio-xilinx.c index e248809965ca..1fa66f2a667f 100644 --- a/drivers/gpio/gpio-xilinx.c +++ b/drivers/gpio/gpio-xilinx.c @@ -68,7 +68,6 @@ struct xgpio_instance { DECLARE_BITMAP(dir, 64); spinlock_t gpio_lock; /* For serializing operations */ int irq; - struct irq_chip irqchip; DECLARE_BITMAP(enable, 64); DECLARE_BITMAP(rising_edge, 64); DECLARE_BITMAP(falling_edge, 64); @@ -416,6 +415,8 @@ static void xgpio_irq_mask(struct irq_data *irq_data) xgpio_writereg(chip->regs + XGPIO_IPIER_OFFSET, temp); } spin_unlock_irqrestore(&chip->gpio_lock, flags); + + gpiochip_disable_irq(&chip->gc, irq_offset); } /** @@ -431,6 +432,8 @@ static void xgpio_irq_unmask(struct irq_data *irq_data) u32 old_enable = xgpio_get_value32(chip->enable, bit); u32 mask = BIT(bit / 32), val; + gpiochip_enable_irq(&chip->gc, irq_offset); + spin_lock_irqsave(&chip->gpio_lock, flags); __set_bit(bit, chip->enable); @@ -544,6 +547,16 @@ static void xgpio_irqhandler(struct irq_desc *desc) chained_irq_exit(irqchip, desc); } +static const struct irq_chip xgpio_irq_chip = { + .name = "gpio-xilinx", + .irq_ack = xgpio_irq_ack, + .irq_mask = xgpio_irq_mask, + .irq_unmask = xgpio_irq_unmask, + .irq_set_type = xgpio_set_irq_type, + .flags = IRQCHIP_IMMUTABLE, + GPIOCHIP_IRQ_RESOURCE_HELPERS, +}; + /** * xgpio_probe - Probe method for the GPIO device. * @pdev: pointer to the platform device @@ -653,12 +666,6 @@ static int xgpio_probe(struct platform_device *pdev) if (chip->irq <= 0) goto skip_irq; - chip->irqchip.name = "gpio-xilinx"; - chip->irqchip.irq_ack = xgpio_irq_ack; - chip->irqchip.irq_mask = xgpio_irq_mask; - chip->irqchip.irq_unmask = xgpio_irq_unmask; - chip->irqchip.irq_set_type = xgpio_set_irq_type; - /* Disable per-channel interrupts */ xgpio_writereg(chip->regs + XGPIO_IPIER_OFFSET, 0); /* Clear any existing per-channel interrupts */ @@ -668,7 +675,7 @@ static int xgpio_probe(struct platform_device *pdev) xgpio_writereg(chip->regs + XGPIO_GIER_OFFSET, XGPIO_GIER_IE); girq = &chip->gc.irq; - girq->chip = &chip->irqchip; + gpio_irq_chip_set_chip(girq, &xgpio_irq_chip); girq->parent_handler = xgpio_irqhandler; girq->num_parents = 1; girq->parents = devm_kcalloc(&pdev->dev, 1, |