X-Git-Url: http://git.cascardo.info/?a=blobdiff_plain;f=drivers%2Firqchip%2Firq-armada-370-xp.c;h=463c235acbdcdc1758329205e3c79e380b5fa7a6;hb=eb64c3c6cdb8fa8a4d324eb71a9033b62e150918;hp=6a2e168c3ab0fdae090000ba2d2a3659501499ab;hpb=019e129f9b2d582e5901c0594427cb4026daa413;p=cascardo%2Flinux.git

diff --git a/drivers/irqchip/irq-armada-370-xp.c b/drivers/irqchip/irq-armada-370-xp.c
index 6a2e168c3ab0..463c235acbdc 100644
--- a/drivers/irqchip/irq-armada-370-xp.c
+++ b/drivers/irqchip/irq-armada-370-xp.c
@@ -26,6 +26,7 @@
 #include <linux/of_pci.h>
 #include <linux/irqdomain.h>
 #include <linux/slab.h>
+#include <linux/syscore_ops.h>
 #include <linux/msi.h>
 #include <asm/mach/arch.h>
 #include <asm/exception.h>
@@ -67,6 +68,7 @@
 static void __iomem *per_cpu_int_base;
 static void __iomem *main_int_base;
 static struct irq_domain *armada_370_xp_mpic_domain;
+static u32 doorbell_mask_reg;
 #ifdef CONFIG_PCI_MSI
 static struct irq_domain *armada_370_xp_msi_domain;
 static DECLARE_BITMAP(msi_used, PCI_MSI_DOORBELL_NR);
@@ -130,7 +132,7 @@ static void armada_370_xp_free_msi(int hwirq)
 	mutex_unlock(&msi_used_lock);
 }
 
-static int armada_370_xp_setup_msi_irq(struct msi_chip *chip,
+static int armada_370_xp_setup_msi_irq(struct msi_controller *chip,
 				       struct pci_dev *pdev,
 				       struct msi_desc *desc)
 {
@@ -157,11 +159,11 @@ static int armada_370_xp_setup_msi_irq(struct msi_chip *chip,
 	msg.address_hi = 0;
 	msg.data = 0xf00 | (hwirq + 16);
 
-	write_msi_msg(virq, &msg);
+	pci_write_msi_msg(virq, &msg);
 	return 0;
 }
 
-static void armada_370_xp_teardown_msi_irq(struct msi_chip *chip,
+static void armada_370_xp_teardown_msi_irq(struct msi_controller *chip,
 					   unsigned int irq)
 {
 	struct irq_data *d = irq_get_irq_data(irq);
@@ -173,10 +175,10 @@ static void armada_370_xp_teardown_msi_irq(struct msi_chip *chip,
 
 static struct irq_chip armada_370_xp_msi_irq_chip = {
 	.name = "armada_370_xp_msi_irq",
-	.irq_enable = unmask_msi_irq,
-	.irq_disable = mask_msi_irq,
-	.irq_mask = mask_msi_irq,
-	.irq_unmask = unmask_msi_irq,
+	.irq_enable = pci_msi_unmask_irq,
+	.irq_disable = pci_msi_mask_irq,
+	.irq_mask = pci_msi_mask_irq,
+	.irq_unmask = pci_msi_unmask_irq,
 };
 
 static int armada_370_xp_msi_map(struct irq_domain *domain, unsigned int virq,
@@ -196,7 +198,7 @@ static const struct irq_domain_ops armada_370_xp_msi_irq_ops = {
 static int armada_370_xp_msi_init(struct device_node *node,
 				  phys_addr_t main_int_phys_base)
 {
-	struct msi_chip *msi_chip;
+	struct msi_controller *msi_chip;
 	u32 reg;
 	int ret;
 
@@ -266,7 +268,7 @@ static int armada_xp_set_affinity(struct irq_data *d,
 	writel(reg, main_int_base + ARMADA_370_XP_INT_SOURCE_CTL(hwirq));
 	raw_spin_unlock(&irq_controller_lock);
 
-	return 0;
+	return IRQ_SET_MASK_OK;
 }
 #endif
 
@@ -485,6 +487,54 @@ armada_370_xp_handle_irq(struct pt_regs *regs)
 	} while (1);
 }
 
+static int armada_370_xp_mpic_suspend(void)
+{
+	doorbell_mask_reg = readl(per_cpu_int_base +
+				  ARMADA_370_XP_IN_DRBEL_MSK_OFFS);
+	return 0;
+}
+
+static void armada_370_xp_mpic_resume(void)
+{
+	int nirqs;
+	irq_hw_number_t irq;
+
+	/* Re-enable interrupts */
+	nirqs = (readl(main_int_base + ARMADA_370_XP_INT_CONTROL) >> 2) & 0x3ff;
+	for (irq = 0; irq < nirqs; irq++) {
+		struct irq_data *data;
+		int virq;
+
+		virq = irq_linear_revmap(armada_370_xp_mpic_domain, irq);
+		if (virq == 0)
+			continue;
+
+		if (irq != ARMADA_370_XP_TIMER0_PER_CPU_IRQ)
+			writel(irq, per_cpu_int_base +
+			       ARMADA_370_XP_INT_CLEAR_MASK_OFFS);
+		else
+			writel(irq, main_int_base +
+			       ARMADA_370_XP_INT_SET_ENABLE_OFFS);
+
+		data = irq_get_irq_data(virq);
+		if (!irqd_irq_disabled(data))
+			armada_370_xp_irq_unmask(data);
+	}
+
+	/* Reconfigure doorbells for IPIs and MSIs */
+	writel(doorbell_mask_reg,
+	       per_cpu_int_base + ARMADA_370_XP_IN_DRBEL_MSK_OFFS);
+	if (doorbell_mask_reg & IPI_DOORBELL_MASK)
+		writel(0, per_cpu_int_base + ARMADA_370_XP_INT_CLEAR_MASK_OFFS);
+	if (doorbell_mask_reg & PCI_MSI_DOORBELL_MASK)
+		writel(1, per_cpu_int_base + ARMADA_370_XP_INT_CLEAR_MASK_OFFS);
+}
+
+struct syscore_ops armada_370_xp_mpic_syscore_ops = {
+	.suspend	= armada_370_xp_mpic_suspend,
+	.resume		= armada_370_xp_mpic_resume,
+};
+
 static int __init armada_370_xp_mpic_of_init(struct device_node *node,
 					     struct device_node *parent)
 {
@@ -541,6 +591,8 @@ static int __init armada_370_xp_mpic_of_init(struct device_node *node,
 					armada_370_xp_mpic_handle_cascade_irq);
 	}
 
+	register_syscore_ops(&armada_370_xp_mpic_syscore_ops);
+
 	return 0;
 }