diff options
Diffstat (limited to 'drivers/gpio/gpio-xgene-sb.c')
| -rw-r--r-- | drivers/gpio/gpio-xgene-sb.c | 65 |
1 files changed, 42 insertions, 23 deletions
diff --git a/drivers/gpio/gpio-xgene-sb.c b/drivers/gpio/gpio-xgene-sb.c index bd5befa807c3..b51b1fa726bb 100644 --- a/drivers/gpio/gpio-xgene-sb.c +++ b/drivers/gpio/gpio-xgene-sb.c @@ -8,20 +8,22 @@ * Quan Nguyen <qnguyen@apm.com>. */ -#include <linux/module.h> +#include <linux/device.h> +#include <linux/err.h> #include <linux/io.h> +#include <linux/irq.h> +#include <linux/irqdomain.h> +#include <linux/mod_devicetable.h> +#include <linux/module.h> #include <linux/of.h> #include <linux/platform_device.h> +#include <linux/property.h> +#include <linux/types.h> + #include <linux/gpio/driver.h> -#include <linux/acpi.h> #include "gpiolib-acpi.h" -/* Common property names */ -#define XGENE_NIRQ_PROPERTY "apm,nr-irqs" -#define XGENE_NGPIO_PROPERTY "apm,nr-gpios" -#define XGENE_IRQ_START_PROPERTY "apm,irq-start" - #define XGENE_DFLT_MAX_NGPIO 22 #define XGENE_DFLT_MAX_NIRQ 6 #define XGENE_DFLT_IRQ_START_PIN 8 @@ -101,12 +103,32 @@ static int xgene_gpio_sb_irq_set_type(struct irq_data *d, unsigned int type) return irq_chip_set_type_parent(d, IRQ_TYPE_LEVEL_HIGH); } -static struct irq_chip xgene_gpio_sb_irq_chip = { +static void xgene_gpio_sb_irq_mask(struct irq_data *d) +{ + struct xgene_gpio_sb *priv = irq_data_get_irq_chip_data(d); + + irq_chip_mask_parent(d); + + gpiochip_disable_irq(&priv->gc, d->hwirq); +} + +static void xgene_gpio_sb_irq_unmask(struct irq_data *d) +{ + struct xgene_gpio_sb *priv = irq_data_get_irq_chip_data(d); + + gpiochip_enable_irq(&priv->gc, d->hwirq); + + irq_chip_unmask_parent(d); +} + +static const struct irq_chip xgene_gpio_sb_irq_chip = { .name = "sbgpio", .irq_eoi = irq_chip_eoi_parent, - .irq_mask = irq_chip_mask_parent, - .irq_unmask = irq_chip_unmask_parent, + .irq_mask = xgene_gpio_sb_irq_mask, + .irq_unmask = xgene_gpio_sb_irq_unmask, .irq_set_type = xgene_gpio_sb_irq_set_type, + .flags = IRQCHIP_IMMUTABLE, + GPIOCHIP_IRQ_RESOURCE_HELPERS, }; static int xgene_gpio_sb_to_irq(struct gpio_chip *gc, u32 gpio) @@ -252,18 +274,17 @@ static int xgene_gpio_sb_probe(struct platform_device *pdev) /* Retrieve start irq pin, use default if property not found */ priv->irq_start = XGENE_DFLT_IRQ_START_PIN; - if (!device_property_read_u32(&pdev->dev, - XGENE_IRQ_START_PROPERTY, &val32)) + if (!device_property_read_u32(&pdev->dev, "apm,irq-start", &val32)) priv->irq_start = val32; /* Retrieve number irqs, use default if property not found */ priv->nirq = XGENE_DFLT_MAX_NIRQ; - if (!device_property_read_u32(&pdev->dev, XGENE_NIRQ_PROPERTY, &val32)) + if (!device_property_read_u32(&pdev->dev, "apm,nr-irqs", &val32)) priv->nirq = val32; /* Retrieve number gpio, use default if property not found */ priv->gc.ngpio = XGENE_DFLT_MAX_NGPIO; - if (!device_property_read_u32(&pdev->dev, XGENE_NGPIO_PROPERTY, &val32)) + if (!device_property_read_u32(&pdev->dev, "apm,nr-gpios", &val32)) priv->gc.ngpio = val32; dev_info(&pdev->dev, "Support %d gpios, %d irqs start from pin %d\n", @@ -305,27 +326,25 @@ static void xgene_gpio_sb_remove(struct platform_device *pdev) } static const struct of_device_id xgene_gpio_sb_of_match[] = { - {.compatible = "apm,xgene-gpio-sb", }, - {}, + { .compatible = "apm,xgene-gpio-sb" }, + {} }; MODULE_DEVICE_TABLE(of, xgene_gpio_sb_of_match); -#ifdef CONFIG_ACPI static const struct acpi_device_id xgene_gpio_sb_acpi_match[] = { - {"APMC0D15", 0}, - {}, + { "APMC0D15" }, + {} }; MODULE_DEVICE_TABLE(acpi, xgene_gpio_sb_acpi_match); -#endif static struct platform_driver xgene_gpio_sb_driver = { .driver = { .name = "xgene-gpio-sb", .of_match_table = xgene_gpio_sb_of_match, - .acpi_match_table = ACPI_PTR(xgene_gpio_sb_acpi_match), - }, + .acpi_match_table = xgene_gpio_sb_acpi_match, + }, .probe = xgene_gpio_sb_probe, - .remove_new = xgene_gpio_sb_remove, + .remove = xgene_gpio_sb_remove, }; module_platform_driver(xgene_gpio_sb_driver); |