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[RFC,19/40] PCI: keystone: Cleanup set_dbi_mode and get_dbi_mode

Message ID 20180921102155.22839-20-kishon@ti.com (mailing list archive)
State New, archived
Delegated to: Bjorn Helgaas
Headers show
Series Cleanup pci-keystone.c and Add AM654 PCIe Support | expand

Commit Message

Kishon Vijay Abraham I Sept. 21, 2018, 10:21 a.m. UTC 
No functional change. Use BIT() macro for DBI_CS2 and cleanup
set_dbimode and get_dbi_mode

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
---
 drivers/pci/controller/dwc/pci-keystone.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)
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Patch

diff --git a/drivers/pci/controller/dwc/pci-keystone.c b/drivers/pci/controller/dwc/pci-keystone.c
index d5304c4a1eb5..728b1e0db314 100644
--- a/drivers/pci/controller/dwc/pci-keystone.c
+++ b/drivers/pci/controller/dwc/pci-keystone.c
@@ -40,7 +40,7 @@ 
 #define LTSSM_EN_VAL		        BIT(0)
 #define LTSSM_STATE_MASK		0x1f
 #define LTSSM_STATE_L0			0x11
-#define DBI_CS2_EN_VAL			0x20
+#define DBI_CS2				BIT(5)
 #define OB_XLAT_EN_VAL		        BIT(1)
 
 /* Application registers */
@@ -214,11 +214,12 @@  static void ks_pcie_set_dbi_mode(struct keystone_pcie *ks_pcie)
 	u32 val;
 
 	val = ks_pcie_app_readl(ks_pcie, CMD_STATUS);
-	ks_pcie_app_writel(ks_pcie, CMD_STATUS, DBI_CS2_EN_VAL | val);
+	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_EN_VAL));
+	} while (!(val & DBI_CS2));
 }
 
 /**
@@ -232,11 +233,12 @@  static void ks_pcie_clear_dbi_mode(struct keystone_pcie *ks_pcie)
 	u32 val;
 
 	val = ks_pcie_app_readl(ks_pcie, CMD_STATUS);
-	ks_pcie_app_writel(ks_pcie, CMD_STATUS, ~DBI_CS2_EN_VAL & val);
+	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_EN_VAL);
+	} while (val & DBI_CS2);
 }
 
 static int ks_pcie_rd_other_conf(struct pcie_port *pp, struct pci_bus *bus,