Commit dd98756d authored by Kamlakant Patel's avatar Kamlakant Patel Committed by Linus Walleij
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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: default avatarKamlakant Patel <kamlakant.patel@broadcom.com>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 16fe1ad2

Documentation/devicetree/bindings/gpio/gpio-xlp.txt

+3 −0
Original line number Diff line number Diff line
@@ -3,6 +3,8 @@ Netlogic XLP Family GPIO 


This GPIO driver is used for following Netlogic XLP SoCs:

	XLP832, XLP316, XLP208, XLP980, XLP532

This GPIO driver is also compatible with GPIO controller found on

Broadcom Vulcan ARM64.



Required properties:

-------------------
@@ -13,6 +15,7 @@ Required properties: 
  - "netlogic,xlp208-gpio": For Netlogic XLP208

  - "netlogic,xlp980-gpio": For Netlogic XLP980

  - "netlogic,xlp532-gpio": For Netlogic XLP532

  - "brcm,vulcan-gpio": For Broadcom Vulcan ARM64

- reg: Physical base address and length of the controller's registers.

- #gpio-cells: Should be two. The first cell is the pin number and the second

  cell is used to specify optional parameters (currently unused).

drivers/gpio/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -474,7 +474,7 @@ config GPIO_XILINX 


config GPIO_XLP

	tristate "Netlogic XLP GPIO support"

	depends on CPU_XLP && OF_GPIO

	depends on OF_GPIO && (CPU_XLP || ARCH_VULCAN || COMPILE_TEST)

	select GPIOLIB_IRQCHIP

	help

	  This driver provides support for GPIO interface on Netlogic XLP MIPS64

drivers/gpio/gpio-xlp.c

+20 −5
Original line number Diff line number Diff line
@@ -85,7 +85,8 @@ enum { 
	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 @@ static const struct of_device_id xlp_gpio_of_ids[] = { 
		.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 @@ static int xlp_gpio_probe(struct platform_device *pdev) 
		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 @@ static int xlp_gpio_probe(struct platform_device *pdev) 
		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 @@ 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

		irq_base = irq_alloc_descs(-1, XLP_GPIO_IRQ_BASE, gc->ngpio, 0);

	if (irq_base < 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);