linux-kernel - [PATCH v2 1/9] PCI: keystone: Cleanup interrupt related macros

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Date:   Thu, 7 Feb 2019 16:39:16 +0530
From:   Kishon Vijay Abraham I <kishon@...com>
To:     Murali Karicheri <m-karicheri2@...com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>
CC:     Kishon Vijay Abraham I <kishon@...com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Jingoo Han <jingoohan1@...il.com>,
        Gustavo Pimentel <gustavo.pimentel@...opsys.com>,
        <linux-pci@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH v2 1/9] PCI: keystone: Cleanup interrupt related macros

No functional change. Change both MSI interrupt and legacy interrupt
related macros to take an additional argument in order to return the
correct register offset.

Signed-off-by: Kishon Vijay Abraham I <kishon@...com>
---
 drivers/pci/controller/dwc/pci-keystone.c | 26 +++++++++++------------
 1 file changed, 13 insertions(+), 13 deletions(-)

diff --git a/drivers/pci/controller/dwc/pci-keystone.c b/drivers/pci/controller/dwc/pci-keystone.c
index 14f2b0b4ed5e..5286a480f76b 100644
--- a/drivers/pci/controller/dwc/pci-keystone.c
+++ b/drivers/pci/controller/dwc/pci-keystone.c
@@ -52,17 +52,17 @@
 
 /* IRQ register defines */
 #define IRQ_EOI				0x050
-#define IRQ_STATUS			0x184
-#define IRQ_ENABLE_SET			0x188
-#define IRQ_ENABLE_CLR			0x18c
 
 #define MSI_IRQ				0x054
-#define MSI0_IRQ_STATUS			0x104
-#define MSI0_IRQ_ENABLE_SET		0x108
-#define MSI0_IRQ_ENABLE_CLR		0x10c
-#define IRQ_STATUS			0x184
+#define MSI_IRQ_STATUS(n)		(0x104 + ((n) << 4))
+#define MSI_IRQ_ENABLE_SET(n)		(0x108 + ((n) << 4))
+#define MSI_IRQ_ENABLE_CLR(n)		(0x10c + ((n) << 4))
 #define MSI_IRQ_OFFSET			4
 
+#define IRQ_STATUS(n)			(0x184 + ((n) << 4))
+#define IRQ_ENABLE_SET(n)		(0x188 + ((n) << 4))
+#define INTx_EN				BIT(0)
+
 #define ERR_IRQ_STATUS			0x1c4
 #define ERR_IRQ_ENABLE_SET		0x1c8
 #define ERR_AER				BIT(5)	/* ECRC error */
@@ -142,7 +142,7 @@ static void ks_pcie_handle_msi_irq(struct keystone_pcie *ks_pcie, int offset)
 	u32 pending, vector;
 	int src, virq;
 
-	pending = ks_pcie_app_readl(ks_pcie, MSI0_IRQ_STATUS + (offset << 4));
+	pending = ks_pcie_app_readl(ks_pcie, MSI_IRQ_STATUS(offset));
 
 	/*
 	 * MSI0 status bit 0-3 shows vectors 0, 8, 16, 24, MSI1 status bit
@@ -169,7 +169,7 @@ static void ks_pcie_msi_irq_ack(int irq, struct pcie_port *pp)
 	ks_pcie = to_keystone_pcie(pci);
 	update_reg_offset_bit_pos(irq, &reg_offset, &bit_pos);
 
-	ks_pcie_app_writel(ks_pcie, MSI0_IRQ_STATUS + (reg_offset << 4),
+	ks_pcie_app_writel(ks_pcie, MSI_IRQ_STATUS(reg_offset),
 			   BIT(bit_pos));
 	ks_pcie_app_writel(ks_pcie, IRQ_EOI, reg_offset + MSI_IRQ_OFFSET);
 }
@@ -181,7 +181,7 @@ static void ks_pcie_msi_set_irq(struct pcie_port *pp, int irq)
 	struct keystone_pcie *ks_pcie = to_keystone_pcie(pci);
 
 	update_reg_offset_bit_pos(irq, &reg_offset, &bit_pos);
-	ks_pcie_app_writel(ks_pcie, MSI0_IRQ_ENABLE_SET + (reg_offset << 4),
+	ks_pcie_app_writel(ks_pcie, MSI_IRQ_ENABLE_SET(reg_offset),
 			   BIT(bit_pos));
 }
 
@@ -192,7 +192,7 @@ static void ks_pcie_msi_clear_irq(struct pcie_port *pp, int irq)
 	struct keystone_pcie *ks_pcie = to_keystone_pcie(pci);
 
 	update_reg_offset_bit_pos(irq, &reg_offset, &bit_pos);
-	ks_pcie_app_writel(ks_pcie, MSI0_IRQ_ENABLE_CLR + (reg_offset << 4),
+	ks_pcie_app_writel(ks_pcie, MSI_IRQ_ENABLE_CLR(reg_offset),
 			   BIT(bit_pos));
 }
 
@@ -206,7 +206,7 @@ static void ks_pcie_enable_legacy_irqs(struct keystone_pcie *ks_pcie)
 	int i;
 
 	for (i = 0; i < PCI_NUM_INTX; i++)
-		ks_pcie_app_writel(ks_pcie, IRQ_ENABLE_SET + (i << 4), 0x1);
+		ks_pcie_app_writel(ks_pcie, IRQ_ENABLE_SET(i), 0x1);
 }
 
 static void ks_pcie_handle_legacy_irq(struct keystone_pcie *ks_pcie,
@@ -217,7 +217,7 @@ static void ks_pcie_handle_legacy_irq(struct keystone_pcie *ks_pcie,
 	u32 pending;
 	int virq;
 
-	pending = ks_pcie_app_readl(ks_pcie, IRQ_STATUS + (offset << 4));
+	pending = ks_pcie_app_readl(ks_pcie, IRQ_STATUS(offset));
 
 	if (BIT(0) & pending) {
 		virq = irq_linear_revmap(ks_pcie->legacy_irq_domain, offset);
-- 
2.17.1