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PCI: keystone: Cleanup set_dbi_mode() and get_dbi_mode() 

No functional change. Use BIT() macro for DBI_CS2 and cleanup
set_dbi_mode() and get_dbi_mode().

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
This commit is contained in:
Kishon Vijay Abraham I 2018-10-17 13:11:09 +05:30 committed by Lorenzo Pieralisi
parent e75043ad97
commit f9127db9fb
1 changed files with 7 additions and 5 deletions
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12
drivers/pci/controller/dwc/pci-keystone.c
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@ -40,7 +40,7 @@
#define LTSSM_EN_VAL BIT(0) #define LTSSM_EN_VAL BIT(0)
#define LTSSM_STATE_MASK 0x1f #define LTSSM_STATE_MASK 0x1f
#define LTSSM_STATE_L0 0x11 #define LTSSM_STATE_L0 0x11
#define DBI_CS2_EN_VAL 0x20 #define DBI_CS2 BIT(5)
#define OB_XLAT_EN_VAL BIT(1) #define OB_XLAT_EN_VAL BIT(1)
/* Application registers */ /* Application registers */
@ -315,11 +315,12 @@ static void ks_pcie_set_dbi_mode(struct keystone_pcie *ks_pcie)
u32 val; u32 val;
val = ks_pcie_app_readl(ks_pcie, CMD_STATUS); 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 { do {
val = ks_pcie_app_readl(ks_pcie, CMD_STATUS); val = ks_pcie_app_readl(ks_pcie, CMD_STATUS);
} while (!(val & DBI_CS2_EN_VAL)); } while (!(val & DBI_CS2));
} }
/** /**
@ -333,11 +334,12 @@ static void ks_pcie_clear_dbi_mode(struct keystone_pcie *ks_pcie)
u32 val; u32 val;
val = ks_pcie_app_readl(ks_pcie, CMD_STATUS); 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 { do {
val = ks_pcie_app_readl(ks_pcie, CMD_STATUS); val = ks_pcie_app_readl(ks_pcie, CMD_STATUS);
} while (val & DBI_CS2_EN_VAL); } while (val & DBI_CS2);
} }
static void ks_pcie_setup_rc_app_regs(struct keystone_pcie *ks_pcie) static void ks_pcie_setup_rc_app_regs(struct keystone_pcie *ks_pcie)