[PATCH 04/12] gpio: blzp1600: use new generic GPIO chip API
From: Bartosz Golaszewski <hidden>
Date: 2025-09-03 08:00:27
Also in:
linux-gpio, lkml
Subsystem:
blzp1600 gpio driver, gpio subsystem, the rest · Maintainers:
James Cowgill, Matt Redfearn, Neil Jones, Nikolaos Pasaloukos, Linus Walleij, Bartosz Golaszewski, Linus Torvalds
From: Bartosz Golaszewski <redacted> Convert the driver to using the new generic GPIO chip interfaces from linux/gpio/generic.h. Signed-off-by: Bartosz Golaszewski <redacted> --- drivers/gpio/gpio-blzp1600.c | 39 ++++++++++++++++++++++++--------------- 1 file changed, 24 insertions(+), 15 deletions(-)
diff --git a/drivers/gpio/gpio-blzp1600.c b/drivers/gpio/gpio-blzp1600.c
index 055cb296ae54758cdc206d36aa1df7b8377d32ec..bfb35d59fa561c43889b186fdfb8d9184b750a53 100644
--- a/drivers/gpio/gpio-blzp1600.c
+++ b/drivers/gpio/gpio-blzp1600.c@@ -6,6 +6,7 @@ #include <linux/errno.h> #include <linux/gpio/driver.h> +#include <linux/gpio/generic.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/io.h>
@@ -36,7 +37,7 @@ struct blzp1600_gpio { void __iomem *base; - struct gpio_chip gc; + struct gpio_generic_chip gen_gc; int irq; };
@@ -76,7 +77,7 @@ static void blzp1600_gpio_irq_mask(struct irq_data *d) { struct blzp1600_gpio *chip = get_blzp1600_gpio_from_irq_data(d); - guard(raw_spinlock_irqsave)(&chip->gc.bgpio_lock); + guard(gpio_generic_lock_irqsave)(&chip->gen_gc); blzp1600_gpio_rmw(chip->base + GPIO_IM_REG, BIT(d->hwirq), 1); }
@@ -84,7 +85,7 @@ static void blzp1600_gpio_irq_unmask(struct irq_data *d) { struct blzp1600_gpio *chip = get_blzp1600_gpio_from_irq_data(d); - guard(raw_spinlock_irqsave)(&chip->gc.bgpio_lock); + guard(gpio_generic_lock_irqsave)(&chip->gen_gc); blzp1600_gpio_rmw(chip->base + GPIO_IM_REG, BIT(d->hwirq), 0); }
@@ -99,9 +100,9 @@ static void blzp1600_gpio_irq_enable(struct irq_data *d) { struct blzp1600_gpio *chip = get_blzp1600_gpio_from_irq_data(d); - gpiochip_enable_irq(&chip->gc, irqd_to_hwirq(d)); + gpiochip_enable_irq(&chip->gen_gc.gc, irqd_to_hwirq(d)); - guard(raw_spinlock_irqsave)(&chip->gc.bgpio_lock); + guard(gpio_generic_lock_irqsave)(&chip->gen_gc); blzp1600_gpio_rmw(chip->base + GPIO_DIR_REG, BIT(d->hwirq), 0); blzp1600_gpio_rmw(chip->base + GPIO_IEN_REG, BIT(d->hwirq), 1); }
@@ -110,9 +111,9 @@ static void blzp1600_gpio_irq_disable(struct irq_data *d) { struct blzp1600_gpio *chip = get_blzp1600_gpio_from_irq_data(d); - guard(raw_spinlock_irqsave)(&chip->gc.bgpio_lock); + guard(gpio_generic_lock_irqsave)(&chip->gen_gc); blzp1600_gpio_rmw(chip->base + GPIO_IEN_REG, BIT(d->hwirq), 0); - gpiochip_disable_irq(&chip->gc, irqd_to_hwirq(d)); + gpiochip_disable_irq(&chip->gen_gc.gc, irqd_to_hwirq(d)); } static int blzp1600_gpio_irq_set_type(struct irq_data *d, u32 type)
@@ -121,7 +122,7 @@ static int blzp1600_gpio_irq_set_type(struct irq_data *d, u32 type) u32 edge_level, single_both, fall_rise; int mask = BIT(d->hwirq); - guard(raw_spinlock_irqsave)(&chip->gc.bgpio_lock); + guard(gpio_generic_lock_irqsave)(&chip->gen_gc); edge_level = blzp1600_gpio_read(chip, GPIO_IS_REG); single_both = blzp1600_gpio_read(chip, GPIO_IBE_REG); fall_rise = blzp1600_gpio_read(chip, GPIO_IEV_REG);
@@ -186,8 +187,8 @@ static void blzp1600_gpio_irqhandler(struct irq_desc *desc) chained_irq_enter(irqchip, desc); irq_status = blzp1600_gpio_read(gpio, GPIO_RIS_REG); - for_each_set_bit(hwirq, &irq_status, gpio->gc.ngpio) - generic_handle_domain_irq(gpio->gc.irq.domain, hwirq); + for_each_set_bit(hwirq, &irq_status, gpio->gen_gc.gc.ngpio) + generic_handle_domain_irq(gpio->gen_gc.gc.irq.domain, hwirq); chained_irq_exit(irqchip, desc); }
@@ -197,7 +198,7 @@ static int blzp1600_gpio_set_debounce(struct gpio_chip *gc, unsigned int offset, { struct blzp1600_gpio *chip = gpiochip_get_data(gc); - guard(raw_spinlock_irqsave)(&chip->gc.bgpio_lock); + guard(gpio_generic_lock_irqsave)(&chip->gen_gc); blzp1600_gpio_rmw(chip->base + GPIO_DB_REG, BIT(offset), debounce); return 0;
@@ -216,6 +217,7 @@ static int blzp1600_gpio_set_config(struct gpio_chip *gc, unsigned int offset, u static int blzp1600_gpio_probe(struct platform_device *pdev) { + struct gpio_generic_chip_config config; struct blzp1600_gpio *chip; struct gpio_chip *gc; int ret;
@@ -228,14 +230,21 @@ static int blzp1600_gpio_probe(struct platform_device *pdev) if (IS_ERR(chip->base)) return PTR_ERR(chip->base); - ret = bgpio_init(&chip->gc, &pdev->dev, 4, chip->base + GPIO_IDATA_REG, - chip->base + GPIO_SET_REG, chip->base + GPIO_CLR_REG, - chip->base + GPIO_DIR_REG, NULL, 0); + config = (typeof(config)){ + .dev = &pdev->dev, + .sz = 4, + .dat = chip->base + GPIO_IDATA_REG, + .set = chip->base + GPIO_SET_REG, + .clr = chip->base + GPIO_CLR_REG, + .dirout = chip->base + GPIO_DIR_REG, + }; + + ret = gpio_generic_chip_init(&chip->gen_gc, &config); if (ret) return dev_err_probe(&pdev->dev, ret, "Failed to register generic gpio\n"); /* configure the gpio chip */ - gc = &chip->gc; + gc = &chip->gen_gc.gc; gc->set_config = blzp1600_gpio_set_config; if (device_property_present(&pdev->dev, "interrupt-controller")) {
--
2.48.1