gpio: xlp: Add GPIO driver support for Broadcom Vulcan ARM64
- Add GPIO support for Broadcom Vulcan ARM64.
- Add depends on ARCH_VULCAN to Kconfig to enable gpio controller
driver for Broadcom Vulcan ARM64 SoCs.
Signed-off-by: Kamlakant Patel <kamlakant.patel@broadcom.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/gpio/gpio-xlp.c b/drivers/gpio/gpio-xlp.c
index aa5813d..08897dc 100644
--- a/drivers/gpio/gpio-xlp.c
+++ b/drivers/gpio/gpio-xlp.c
@@ -85,7 +85,8 @@
XLP_GPIO_VARIANT_XLP316,
XLP_GPIO_VARIANT_XLP208,
XLP_GPIO_VARIANT_XLP980,
- XLP_GPIO_VARIANT_XLP532
+ XLP_GPIO_VARIANT_XLP532,
+ GPIO_VARIANT_VULCAN
};
struct xlp_gpio_priv {
@@ -285,6 +286,10 @@
.compatible = "netlogic,xlp532-gpio",
.data = (void *)XLP_GPIO_VARIANT_XLP532,
},
+ {
+ .compatible = "brcm,vulcan-gpio",
+ .data = (void *)GPIO_VARIANT_VULCAN,
+ },
{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, xlp_gpio_of_ids);
@@ -347,6 +352,7 @@
break;
case XLP_GPIO_VARIANT_XLP980:
case XLP_GPIO_VARIANT_XLP532:
+ case GPIO_VARIANT_VULCAN:
priv->gpio_out_en = gpio_base + GPIO_9XX_OUTPUT_EN;
priv->gpio_paddrv = gpio_base + GPIO_9XX_PADDRV;
priv->gpio_intr_stat = gpio_base + GPIO_9XX_INT_STAT;
@@ -354,7 +360,12 @@
priv->gpio_intr_pol = gpio_base + GPIO_9XX_INT_POL;
priv->gpio_intr_en = gpio_base + GPIO_9XX_INT_EN00;
- ngpio = (soc_type == XLP_GPIO_VARIANT_XLP980) ? 66 : 67;
+ if (soc_type == XLP_GPIO_VARIANT_XLP980)
+ ngpio = 66;
+ else if (soc_type == XLP_GPIO_VARIANT_XLP532)
+ ngpio = 67;
+ else
+ ngpio = 70;
break;
default:
dev_err(&pdev->dev, "Unknown Processor type!\n");
@@ -377,10 +388,14 @@
gc->get = xlp_gpio_get;
spin_lock_init(&priv->lock);
- irq_base = irq_alloc_descs(-1, XLP_GPIO_IRQ_BASE, gc->ngpio, 0);
- if (irq_base < 0) {
+ /* 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
+ irq_base = irq_alloc_descs(-1, XLP_GPIO_IRQ_BASE, gc->ngpio, 0);
+ if (IS_ERR_VALUE(irq_base)) {
dev_err(&pdev->dev, "Failed to allocate IRQ numbers\n");
- return -ENODEV;
+ return irq_base;
}
err = gpiochip_add_data(gc, priv);