PCI: keystone: Relocate ks_pcie_set/clear_dbi_mode()

Relocate ks_pcie_set_dbi_mode() and ks_pcie_clear_dbi_mode() to avoid
forward declaration in a subsequent patch. No functional change intended.

Link: https://lore.kernel.org/linux-pci/20240328085041.2916899-2-s-vadapalli@ti.com
Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

Author: Siddharth-Vadapalli-at-TI

drivers/pci/controller/dwc/pci-keystone.c

@@ -245,6 +245,48 @@ static struct irq_chip ks_pcie_msi_irq_chip = {
 	.irq_unmask = ks_pcie_msi_unmask,
 };
 
+/**
+ * ks_pcie_set_dbi_mode() - Set DBI mode to access overlaid BAR mask registers
+ * @ks_pcie: A pointer to the keystone_pcie structure which holds the KeyStone
+ *	     PCIe host controller driver information.
+ *
+ * Since modification of dbi_cs2 involves different clock domain, read the
+ * status back to ensure the transition is complete.
+ */
+static void ks_pcie_set_dbi_mode(struct keystone_pcie *ks_pcie)
+{
+	u32 val;
+
+	val = ks_pcie_app_readl(ks_pcie, CMD_STATUS);
+	val |= DBI_CS2;
+	ks_pcie_app_writel(ks_pcie, CMD_STATUS, val);
+
+	do {
+		val = ks_pcie_app_readl(ks_pcie, CMD_STATUS);
+	} while (!(val & DBI_CS2));
+}
+
+/**
+ * ks_pcie_clear_dbi_mode() - Disable DBI mode
+ * @ks_pcie: A pointer to the keystone_pcie structure which holds the KeyStone
+ *	     PCIe host controller driver information.
+ *
+ * Since modification of dbi_cs2 involves different clock domain, read the
+ * status back to ensure the transition is complete.
+ */
+static void ks_pcie_clear_dbi_mode(struct keystone_pcie *ks_pcie)
+{
+	u32 val;
+
+	val = ks_pcie_app_readl(ks_pcie, CMD_STATUS);
+	val &= ~DBI_CS2;
+	ks_pcie_app_writel(ks_pcie, CMD_STATUS, val);
+
+	do {
+		val = ks_pcie_app_readl(ks_pcie, CMD_STATUS);
+	} while (val & DBI_CS2);
+}
+
 static int ks_pcie_msi_host_init(struct dw_pcie_rp *pp)
 {
 	pp->msi_irq_chip = &ks_pcie_msi_irq_chip;
@@ -340,48 +382,6 @@ static const struct irq_domain_ops ks_pcie_intx_irq_domain_ops = {
 	.xlate = irq_domain_xlate_onetwocell,
 };
 
-/**
- * ks_pcie_set_dbi_mode() - Set DBI mode to access overlaid BAR mask registers
- * @ks_pcie: A pointer to the keystone_pcie structure which holds the KeyStone
- *	     PCIe host controller driver information.
- *
- * Since modification of dbi_cs2 involves different clock domain, read the
- * status back to ensure the transition is complete.
- */
-static void ks_pcie_set_dbi_mode(struct keystone_pcie *ks_pcie)
-{
-	u32 val;
-
-	val = ks_pcie_app_readl(ks_pcie, CMD_STATUS);
-	val |= DBI_CS2;
-	ks_pcie_app_writel(ks_pcie, CMD_STATUS, val);
-
-	do {
-		val = ks_pcie_app_readl(ks_pcie, CMD_STATUS);
-	} while (!(val & DBI_CS2));
-}
-
-/**
- * ks_pcie_clear_dbi_mode() - Disable DBI mode
- * @ks_pcie: A pointer to the keystone_pcie structure which holds the KeyStone
- *	     PCIe host controller driver information.
- *
- * Since modification of dbi_cs2 involves different clock domain, read the
- * status back to ensure the transition is complete.
- */
-static void ks_pcie_clear_dbi_mode(struct keystone_pcie *ks_pcie)
-{
-	u32 val;
-
-	val = ks_pcie_app_readl(ks_pcie, CMD_STATUS);
-	val &= ~DBI_CS2;
-	ks_pcie_app_writel(ks_pcie, CMD_STATUS, val);
-
-	do {
-		val = ks_pcie_app_readl(ks_pcie, CMD_STATUS);
-	} while (val & DBI_CS2);
-}
-
 static void ks_pcie_setup_rc_app_regs(struct keystone_pcie *ks_pcie)
 {
 	u32 val;