From f5691439353783ef114876849c70d2a641e09498 Mon Sep 17 00:00:00 2001 From: Manikanta Guntupalli Date: Fri, 9 Jun 2023 00:12:52 +0530 Subject: [PATCH] gpio: zynq: fix zynqmp_gpio not an immutable chip warning Make the struct irq_chip const and flag it as IRQCHIP_IMMUTABLE, call gpiochip_disable_irq() in the .irq_mask() callback and gpiochip_enable_irq() in the .irq_unmask() callback to fix "gpio gpiochip1: (zynqmp_gpio): not an immutable chip" warning. Signed-off-by: Manikanta Guntupalli Reviewed-by: Linus Walleij Signed-off-by: Bartosz Golaszewski --- drivers/gpio/gpio-zynq.c | 22 +++++++++++++++------- 1 file changed, 15 insertions(+), 7 deletions(-) diff --git a/drivers/gpio/gpio-zynq.c b/drivers/gpio/gpio-zynq.c index 06c6401f02b89e..c334e46033baeb 100644 --- a/drivers/gpio/gpio-zynq.c +++ b/drivers/gpio/gpio-zynq.c @@ -151,8 +151,8 @@ struct zynq_platform_data { int bank_max[ZYNQMP_GPIO_MAX_BANK]; }; -static struct irq_chip zynq_gpio_level_irqchip; -static struct irq_chip zynq_gpio_edge_irqchip; +static const struct irq_chip zynq_gpio_level_irqchip; +static const struct irq_chip zynq_gpio_edge_irqchip; /** * zynq_gpio_is_zynq - test if HW is zynq or zynqmp @@ -404,9 +404,12 @@ static int zynq_gpio_get_direction(struct gpio_chip *chip, unsigned int pin) static void zynq_gpio_irq_mask(struct irq_data *irq_data) { unsigned int device_pin_num, bank_num, bank_pin_num; + const unsigned long offset = irqd_to_hwirq(irq_data); + struct gpio_chip *chip = irq_data_get_irq_chip_data(irq_data); struct zynq_gpio *gpio = gpiochip_get_data(irq_data_get_irq_chip_data(irq_data)); + gpiochip_disable_irq(chip, offset); device_pin_num = irq_data->hwirq; zynq_gpio_get_bank_pin(device_pin_num, &bank_num, &bank_pin_num, gpio); writel_relaxed(BIT(bank_pin_num), @@ -425,9 +428,12 @@ static void zynq_gpio_irq_mask(struct irq_data *irq_data) static void zynq_gpio_irq_unmask(struct irq_data *irq_data) { unsigned int device_pin_num, bank_num, bank_pin_num; + const unsigned long offset = irqd_to_hwirq(irq_data); + struct gpio_chip *chip = irq_data_get_irq_chip_data(irq_data); struct zynq_gpio *gpio = gpiochip_get_data(irq_data_get_irq_chip_data(irq_data)); + gpiochip_enable_irq(chip, offset); device_pin_num = irq_data->hwirq; zynq_gpio_get_bank_pin(device_pin_num, &bank_num, &bank_pin_num, gpio); writel_relaxed(BIT(bank_pin_num), @@ -590,7 +596,7 @@ static void zynq_gpio_irq_relres(struct irq_data *d) } /* irq chip descriptor */ -static struct irq_chip zynq_gpio_level_irqchip = { +static const struct irq_chip zynq_gpio_level_irqchip = { .name = DRIVER_NAME, .irq_enable = zynq_gpio_irq_enable, .irq_eoi = zynq_gpio_irq_ack, @@ -601,10 +607,11 @@ static struct irq_chip zynq_gpio_level_irqchip = { .irq_request_resources = zynq_gpio_irq_reqres, .irq_release_resources = zynq_gpio_irq_relres, .flags = IRQCHIP_EOI_THREADED | IRQCHIP_EOI_IF_HANDLED | - IRQCHIP_MASK_ON_SUSPEND, + IRQCHIP_MASK_ON_SUSPEND | IRQCHIP_IMMUTABLE, + GPIOCHIP_IRQ_RESOURCE_HELPERS, }; -static struct irq_chip zynq_gpio_edge_irqchip = { +static const struct irq_chip zynq_gpio_edge_irqchip = { .name = DRIVER_NAME, .irq_enable = zynq_gpio_irq_enable, .irq_ack = zynq_gpio_irq_ack, @@ -614,7 +621,8 @@ static struct irq_chip zynq_gpio_edge_irqchip = { .irq_set_wake = zynq_gpio_set_wake, .irq_request_resources = zynq_gpio_irq_reqres, .irq_release_resources = zynq_gpio_irq_relres, - .flags = IRQCHIP_MASK_ON_SUSPEND, + .flags = IRQCHIP_MASK_ON_SUSPEND | IRQCHIP_IMMUTABLE, + GPIOCHIP_IRQ_RESOURCE_HELPERS, }; static void zynq_gpio_handle_bank_irq(struct zynq_gpio *gpio, @@ -962,7 +970,7 @@ static int zynq_gpio_probe(struct platform_device *pdev) /* Set up the GPIO irqchip */ girq = &chip->irq; - girq->chip = &zynq_gpio_edge_irqchip; + gpio_irq_chip_set_chip(girq, &zynq_gpio_edge_irqchip); girq->parent_handler = zynq_gpio_irqhandler; girq->num_parents = 1; girq->parents = devm_kcalloc(&pdev->dev, 1,