diff options
Diffstat (limited to 'drivers/gpio/gpio-rcar.c')
| -rw-r--r-- | drivers/gpio/gpio-rcar.c | 66 |
1 files changed, 48 insertions, 18 deletions
diff --git a/drivers/gpio/gpio-rcar.c b/drivers/gpio/gpio-rcar.c index d3f15ae93bd3..ca76ce751540 100644 --- a/drivers/gpio/gpio-rcar.c +++ b/drivers/gpio/gpio-rcar.c @@ -169,7 +169,8 @@ static irqreturn_t gpio_rcar_irq_handler(int irq, void *dev_id) u32 pending; unsigned int offset, irqs_handled = 0; - while ((pending = gpio_rcar_read(p, INTDT))) { + while ((pending = gpio_rcar_read(p, INTDT) & + gpio_rcar_read(p, INTMSK))) { offset = __ffs(pending); gpio_rcar_write(p, INTCLR, BIT(offset)); generic_handle_irq(irq_find_mapping(p->irq_domain, offset)); @@ -284,7 +285,34 @@ static struct irq_domain_ops gpio_rcar_irq_domain_ops = { .map = gpio_rcar_irq_domain_map, }; -static void gpio_rcar_parse_pdata(struct gpio_rcar_priv *p) +struct gpio_rcar_info { + bool has_both_edge_trigger; +}; + +static const struct of_device_id gpio_rcar_of_table[] = { + { + .compatible = "renesas,gpio-r8a7790", + .data = (void *)&(const struct gpio_rcar_info) { + .has_both_edge_trigger = true, + }, + }, { + .compatible = "renesas,gpio-r8a7791", + .data = (void *)&(const struct gpio_rcar_info) { + .has_both_edge_trigger = true, + }, + }, { + .compatible = "renesas,gpio-rcar", + .data = (void *)&(const struct gpio_rcar_info) { + .has_both_edge_trigger = false, + }, + }, { + /* Terminator */ + }, +}; + +MODULE_DEVICE_TABLE(of, gpio_rcar_of_table); + +static int gpio_rcar_parse_pdata(struct gpio_rcar_priv *p) { struct gpio_rcar_config *pdata = dev_get_platdata(&p->pdev->dev); struct device_node *np = p->pdev->dev.of_node; @@ -294,11 +322,21 @@ static void gpio_rcar_parse_pdata(struct gpio_rcar_priv *p) if (pdata) { p->config = *pdata; } else if (IS_ENABLED(CONFIG_OF) && np) { + const struct of_device_id *match; + const struct gpio_rcar_info *info; + + match = of_match_node(gpio_rcar_of_table, np); + if (!match) + return -EINVAL; + + info = match->data; + ret = of_parse_phandle_with_fixed_args(np, "gpio-ranges", 3, 0, &args); p->config.number_of_pins = ret == 0 ? args.args[2] : RCAR_MAX_GPIO_PER_BANK; p->config.gpio_base = -1; + p->config.has_both_edge_trigger = info->has_both_edge_trigger; } if (p->config.number_of_pins == 0 || @@ -308,6 +346,8 @@ static void gpio_rcar_parse_pdata(struct gpio_rcar_priv *p) p->config.number_of_pins, RCAR_MAX_GPIO_PER_BANK); p->config.number_of_pins = RCAR_MAX_GPIO_PER_BANK; } + + return 0; } static int gpio_rcar_probe(struct platform_device *pdev) @@ -330,7 +370,9 @@ static int gpio_rcar_probe(struct platform_device *pdev) spin_lock_init(&p->lock); /* Get device configuration from DT node or platform data. */ - gpio_rcar_parse_pdata(p); + ret = gpio_rcar_parse_pdata(p); + if (ret < 0) + return ret; platform_set_drvdata(pdev, p); @@ -369,10 +411,9 @@ static int gpio_rcar_probe(struct platform_device *pdev) irq_chip->name = name; irq_chip->irq_mask = gpio_rcar_irq_disable; irq_chip->irq_unmask = gpio_rcar_irq_enable; - irq_chip->irq_enable = gpio_rcar_irq_enable; - irq_chip->irq_disable = gpio_rcar_irq_disable; irq_chip->irq_set_type = gpio_rcar_irq_set_type; - irq_chip->flags = IRQCHIP_SKIP_SET_WAKE | IRQCHIP_SET_TYPE_MASKED; + irq_chip->flags = IRQCHIP_SKIP_SET_WAKE | IRQCHIP_SET_TYPE_MASKED + | IRQCHIP_MASK_ON_SUSPEND; p->irq_domain = irq_domain_add_simple(pdev->dev.of_node, p->config.number_of_pins, @@ -381,7 +422,7 @@ static int gpio_rcar_probe(struct platform_device *pdev) if (!p->irq_domain) { ret = -ENXIO; dev_err(&pdev->dev, "cannot initialize irq domain\n"); - goto err1; + goto err0; } if (devm_request_irq(&pdev->dev, irq->start, @@ -435,17 +476,6 @@ static int gpio_rcar_remove(struct platform_device *pdev) return 0; } -#ifdef CONFIG_OF -static const struct of_device_id gpio_rcar_of_table[] = { - { - .compatible = "renesas,gpio-rcar", - }, - { }, -}; - -MODULE_DEVICE_TABLE(of, gpio_rcar_of_table); -#endif - static struct platform_driver gpio_rcar_device_driver = { .probe = gpio_rcar_probe, .remove = gpio_rcar_remove, |