diff options
Diffstat (limited to 'drivers/gpio/gpio-xlp.c')
| -rw-r--r-- | drivers/gpio/gpio-xlp.c | 52 |
1 files changed, 38 insertions, 14 deletions
diff --git a/drivers/gpio/gpio-xlp.c b/drivers/gpio/gpio-xlp.c index 1a33a19d95b9..4620d050e5a8 100644 --- a/drivers/gpio/gpio-xlp.c +++ b/drivers/gpio/gpio-xlp.c @@ -19,6 +19,7 @@ #include <linux/irq.h> #include <linux/interrupt.h> #include <linux/irqchip/chained_irq.h> +#include <linux/acpi.h> /* * XLP GPIO has multiple 32 bit registers for each feature where each register @@ -299,7 +300,6 @@ static int xlp_gpio_probe(struct platform_device *pdev) struct gpio_chip *gc; struct resource *iores; struct xlp_gpio_priv *priv; - const struct of_device_id *of_id; void __iomem *gpio_base; int irq_base, irq, err; int ngpio; @@ -321,13 +321,26 @@ static int xlp_gpio_probe(struct platform_device *pdev) if (irq < 0) return irq; - of_id = of_match_device(xlp_gpio_of_ids, &pdev->dev); - if (!of_id) { - dev_err(&pdev->dev, "Failed to get soc type!\n"); - return -ENODEV; - } + if (pdev->dev.of_node) { + const struct of_device_id *of_id; - soc_type = (uintptr_t) of_id->data; + of_id = of_match_device(xlp_gpio_of_ids, &pdev->dev); + if (!of_id) { + dev_err(&pdev->dev, "Unable to match OF ID\n"); + return -ENODEV; + } + soc_type = (uintptr_t) of_id->data; + } else { + const struct acpi_device_id *acpi_id; + + acpi_id = acpi_match_device(pdev->dev.driver->acpi_match_table, + &pdev->dev); + if (!acpi_id || !acpi_id->driver_data) { + dev_err(&pdev->dev, "Unable to match ACPI ID\n"); + return -ENODEV; + } + soc_type = (uintptr_t) acpi_id->driver_data; + } switch (soc_type) { case XLP_GPIO_VARIANT_XLP832: @@ -388,14 +401,16 @@ static int xlp_gpio_probe(struct platform_device *pdev) gc->get = xlp_gpio_get; spin_lock_init(&priv->lock); - /* XLP has fixed IRQ range for GPIO interrupts */ - if (soc_type == GPIO_VARIANT_VULCAN) - irq_base = irq_alloc_descs(-1, 0, gc->ngpio, 0); - else + + /* XLP(MIPS) has fixed range for GPIO IRQs, Vulcan(ARM64) does not */ + if (soc_type != GPIO_VARIANT_VULCAN) { irq_base = irq_alloc_descs(-1, XLP_GPIO_IRQ_BASE, gc->ngpio, 0); - if (irq_base < 0) { - dev_err(&pdev->dev, "Failed to allocate IRQ numbers\n"); - return irq_base; + if (irq_base < 0) { + dev_err(&pdev->dev, "Failed to allocate IRQ numbers\n"); + return irq_base; + } + } else { + irq_base = 0; } err = gpiochip_add_data(gc, priv); @@ -423,10 +438,19 @@ out_free_desc: return err; } +#ifdef CONFIG_ACPI +static const struct acpi_device_id xlp_gpio_acpi_match[] = { + { "BRCM9006", GPIO_VARIANT_VULCAN }, + {}, +}; +MODULE_DEVICE_TABLE(acpi, xlp_gpio_acpi_match); +#endif + static struct platform_driver xlp_gpio_driver = { .driver = { .name = "xlp-gpio", .of_match_table = xlp_gpio_of_ids, + .acpi_match_table = ACPI_PTR(xlp_gpio_acpi_match), }, .probe = xlp_gpio_probe, }; |