1 files changed, 0 insertions, 94 deletions
diff --git a/target/linux/cns3xxx/patches-4.4/110-pci_isolated_interrupts.patch b/target/linux/cns3xxx/patches-4.4/110-pci_isolated_interrupts.patch
index bb01d46a3b..800be813b8 100644
--- a/target/linux/cns3xxx/patches-4.4/110-pci_isolated_interrupts.patch
+++ b/target/linux/cns3xxx/patches-4.4/110-pci_isolated_interrupts.patch
@@ -1,97 +1,3 @@
---- a/arch/arm/mach-cns3xxx/laguna.c
-+++ b/arch/arm/mach-cns3xxx/laguna.c
-@@ -21,6 +21,7 @@
- #include <linux/kernel.h>
- #include <linux/compiler.h>
- #include <linux/io.h>
-+#include <linux/irq.h>
- #include <linux/gpio.h>
- #include <linux/dma-mapping.h>
- #include <linux/serial_core.h>
-@@ -887,6 +888,47 @@ static int laguna_register_gpio(struct g
- 	return ret;
- }
- 
-+/* allow disabling of external isolated PCIe IRQs */
-+static int cns3xxx_pciextirq = 1;
-+static int __init cns3xxx_pciextirq_disable(char *s)
-+{
-+      cns3xxx_pciextirq = 0;
-+      return 1;
-+}
-+__setup("noextirq", cns3xxx_pciextirq_disable);
-+
-+static int __init laguna_pcie_init_irq(void)
-+{
-+	u32 __iomem *mem = (void __iomem *)(CNS3XXX_GPIOB_BASE_VIRT + 0x0004);
-+	u32 reg = (__raw_readl(mem) >> 26) & 0xf;
-+	int irqs[] = {
-+		IRQ_CNS3XXX_EXTERNAL_PIN0,
-+		IRQ_CNS3XXX_EXTERNAL_PIN1,
-+		IRQ_CNS3XXX_EXTERNAL_PIN2,
-+		154,
-+	};
-+
-+	if (!machine_is_gw2388())
-+		return 0;
-+
-+	/* Verify GPIOB[26:29] == 0001b indicating support for ext irqs */
-+	if (cns3xxx_pciextirq && reg != 1)
-+		cns3xxx_pciextirq = 0;
-+
-+	if (cns3xxx_pciextirq) {
-+		printk("laguna: using isolated PCI interrupts:"
-+		       " irq%d/irq%d/irq%d/irq%d\n",
-+		       irqs[0], irqs[1], irqs[2], irqs[3]);
-+		cns3xxx_pcie_set_irqs(0, irqs);
-+	} else {
-+		printk("laguna: using shared PCI interrupts: irq%d\n",
-+		       IRQ_CNS3XXX_PCIE0_DEVICE);
-+	}
-+
-+	return 0;
-+}
-+subsys_initcall(laguna_pcie_init_irq);
-+
- static int __init laguna_model_setup(void)
- {
- 	u32 __iomem *mem;
-@@ -898,8 +940,33 @@ static int __init laguna_model_setup(voi
- 	printk("Running on Gateworks Laguna %s\n", laguna_info.model);
- 	cns3xxx_gpio_init( 0, 32, CNS3XXX_GPIOA_BASE_VIRT, IRQ_CNS3XXX_GPIOA,
- 		NR_IRQS_CNS3XXX);
--	cns3xxx_gpio_init(32, 32, CNS3XXX_GPIOB_BASE_VIRT, IRQ_CNS3XXX_GPIOB,
--		NR_IRQS_CNS3XXX + 32);
-+
-+	/*
-+	 * If pcie external interrupts are supported and desired
-+	 * configure IRQ types and configure pin function.
-+	 * Note that cns3xxx_pciextirq is enabled by default, but can be
-+	 * unset via the 'noextirq' kernel param or by laguna_pcie_init() if
-+	 * the baseboard model does not support this hardware feature.
-+	 */
-+	if (cns3xxx_pciextirq) {
-+		mem = (void __iomem *)(CNS3XXX_MISC_BASE_VIRT + 0x0018);
-+		reg = __raw_readl(mem);
-+		/* GPIO26 is gpio, EXT_INT[0:2] not gpio func */
-+		reg &= ~0x3c000000;
-+		reg |= 0x38000000;
-+		__raw_writel(reg, mem);
-+
-+		cns3xxx_gpio_init(32, 32, CNS3XXX_GPIOB_BASE_VIRT,
-+				  IRQ_CNS3XXX_GPIOB, NR_IRQS_CNS3XXX + 32);
-+
-+		irq_set_irq_type(154, IRQ_TYPE_LEVEL_LOW);
-+		irq_set_irq_type(93, IRQ_TYPE_LEVEL_HIGH);
-+		irq_set_irq_type(94, IRQ_TYPE_LEVEL_HIGH);
-+		irq_set_irq_type(95, IRQ_TYPE_LEVEL_HIGH);
-+	} else {
-+		cns3xxx_gpio_init(32, 32, CNS3XXX_GPIOB_BASE_VIRT,
-+				  IRQ_CNS3XXX_GPIOB, NR_IRQS_CNS3XXX + 32);
-+	}
- 
- 	if (strncmp(laguna_info.model, "GW", 2) == 0) {
- 		if (laguna_info.config_bitmap & ETH0_LOAD)
 --- a/arch/arm/mach-cns3xxx/pcie.c
 +++ b/arch/arm/mach-cns3xxx/pcie.c
 @@ -18,6 +18,7 @@