diff options
Diffstat (limited to 'drivers/pinctrl/nuvoton/pinctrl-wpcm450.c')
| -rw-r--r-- | drivers/pinctrl/nuvoton/pinctrl-wpcm450.c | 48 |
1 files changed, 30 insertions, 18 deletions
diff --git a/drivers/pinctrl/nuvoton/pinctrl-wpcm450.c b/drivers/pinctrl/nuvoton/pinctrl-wpcm450.c index 4264ca749175..d624a4d302a8 100644 --- a/drivers/pinctrl/nuvoton/pinctrl-wpcm450.c +++ b/drivers/pinctrl/nuvoton/pinctrl-wpcm450.c @@ -11,6 +11,7 @@ #include <linux/device.h> #include <linux/gpio/driver.h> +#include <linux/gpio/generic.h> #include <linux/interrupt.h> #include <linux/irq.h> #include <linux/mfd/syscon.h> @@ -47,7 +48,7 @@ struct wpcm450_pinctrl; struct wpcm450_bank; struct wpcm450_gpio { - struct gpio_chip gc; + struct gpio_generic_chip chip; struct wpcm450_pinctrl *pctrl; const struct wpcm450_bank *bank; }; @@ -184,11 +185,12 @@ static void wpcm450_gpio_irq_unmask(struct irq_data *d) } /* - * This is an implementation of the gpio_chip->get() function, for use in - * wpcm450_gpio_fix_evpol. Unfortunately, we can't use the bgpio-provided - * implementation there, because it would require taking gpio_chip->bgpio_lock, - * which is a spin lock, but wpcm450_gpio_fix_evpol must work in contexts where - * a raw spin lock is held. + * FIXME: This is an implementation of the gpio_chip->get() function, for use + * in wpcm450_gpio_fix_evpol(). It was implemented back when gpio-mmio used a + * regular spinlock internally, while wpcm450_gpio_fix_evpol() needed to work + * in contexts with a raw spinlock held. Since then, the gpio generic chip has + * been switched to using a raw spinlock so this should be converted to using + * the locking interfaces provided in linux/gpio/gneneric.h. */ static int wpcm450_gpio_get(struct wpcm450_gpio *gpio, int offset) { @@ -329,7 +331,7 @@ static void wpcm450_gpio_irqhandler(struct irq_desc *desc) for_each_set_bit(bit, &pending, 32) { int offset = wpcm450_irq_bitnum_to_gpio(gpio, bit); - generic_handle_domain_irq(gpio->gc.irq.domain, offset); + generic_handle_domain_irq(gpio->chip.gc.irq.domain, offset); } chained_irq_exit(chip, desc); } @@ -989,7 +991,7 @@ static const struct pinconf_ops wpcm450_pinconf_ops = { .pin_config_set = wpcm450_config_set, }; -static struct pinctrl_desc wpcm450_pinctrl_desc = { +static const struct pinctrl_desc wpcm450_pinctrl_desc = { .name = "wpcm450-pinctrl", .pins = wpcm450_pins, .npins = ARRAY_SIZE(wpcm450_pins), @@ -1012,7 +1014,7 @@ static int wpcm450_gpio_add_pin_ranges(struct gpio_chip *chip) struct wpcm450_gpio *gpio = gpiochip_get_data(chip); const struct wpcm450_bank *bank = gpio->bank; - return gpiochip_add_pin_range(&gpio->gc, dev_name(gpio->pctrl->dev), + return gpiochip_add_pin_range(&gpio->chip.gc, dev_name(gpio->pctrl->dev), 0, bank->base, bank->length); } @@ -1029,6 +1031,7 @@ static int wpcm450_gpio_register(struct platform_device *pdev, "Resource fail for GPIO controller\n"); for_each_gpiochip_node(dev, child) { + struct gpio_generic_chip_config config; void __iomem *dat = NULL; void __iomem *set = NULL; void __iomem *dirout = NULL; @@ -1058,19 +1061,28 @@ static int wpcm450_gpio_register(struct platform_device *pdev, set = pctrl->gpio_base + bank->dataout; dirout = pctrl->gpio_base + bank->cfg0; } else { - flags = BGPIOF_NO_OUTPUT; + flags = GPIO_GENERIC_NO_OUTPUT; } - ret = bgpio_init(&gpio->gc, dev, 4, - dat, set, NULL, dirout, NULL, flags); + + config = (struct gpio_generic_chip_config) { + .dev = dev, + .sz = 4, + .dat = dat, + .set = set, + .dirout = dirout, + .flags = flags, + }; + + ret = gpio_generic_chip_init(&gpio->chip, &config); if (ret < 0) return dev_err_probe(dev, ret, "GPIO initialization failed\n"); - gpio->gc.ngpio = bank->length; - gpio->gc.set_config = wpcm450_gpio_set_config; - gpio->gc.fwnode = child; - gpio->gc.add_pin_ranges = wpcm450_gpio_add_pin_ranges; + gpio->chip.gc.ngpio = bank->length; + gpio->chip.gc.set_config = wpcm450_gpio_set_config; + gpio->chip.gc.fwnode = child; + gpio->chip.gc.add_pin_ranges = wpcm450_gpio_add_pin_ranges; - girq = &gpio->gc.irq; + girq = &gpio->chip.gc.irq; gpio_irq_chip_set_chip(girq, &wpcm450_gpio_irqchip); girq->parent_handler = wpcm450_gpio_irqhandler; girq->parents = devm_kcalloc(dev, WPCM450_NUM_GPIO_IRQS, @@ -1094,7 +1106,7 @@ static int wpcm450_gpio_register(struct platform_device *pdev, girq->num_parents++; } - ret = devm_gpiochip_add_data(dev, &gpio->gc, gpio); + ret = devm_gpiochip_add_data(dev, &gpio->chip.gc, gpio); if (ret) return dev_err_probe(dev, ret, "Failed to add GPIO chip\n"); } |