[PATCH v2 17/21] PCI: keystone: Cleanup ks_pcie_link_up()
From: Kishon Vijay Abraham I
Date: Wed Oct 17 2018 - 03:43:31 EST
ks_pcie_link_up() uses registers from the designware core to get the
status of the link. Move the register defines to pcie-designware.h
and cleanup ks_pcie_link_up().
Signed-off-by: Kishon Vijay Abraham I <kishon@xxxxxx>
---
drivers/pci/controller/dwc/pci-keystone.c | 11 +++--------
drivers/pci/controller/dwc/pcie-designware.h | 4 ++++
2 files changed, 7 insertions(+), 8 deletions(-)
diff --git a/drivers/pci/controller/dwc/pci-keystone.c b/drivers/pci/controller/dwc/pci-keystone.c
index 2decbaec81a3..e181e6277323 100644
--- a/drivers/pci/controller/dwc/pci-keystone.c
+++ b/drivers/pci/controller/dwc/pci-keystone.c
@@ -38,8 +38,6 @@
/* Application register defines */
#define LTSSM_EN_VAL BIT(0)
-#define LTSSM_STATE_MASK 0x1f
-#define LTSSM_STATE_L0 0x11
#define DBI_CS2 BIT(5)
#define OB_XLAT_EN_VAL BIT(1)
@@ -87,11 +85,7 @@
#define ERR_IRQ_ENABLE_SET 0x1c8
#define ERR_IRQ_ENABLE_CLR 0x1cc
-/* Config space registers */
-#define DEBUG0 0x728
-
#define MAX_MSI_HOST_IRQS 8
-
/* PCIE controller device IDs */
#define PCIE_RC_K2HK 0xb008
#define PCIE_RC_K2E 0xb009
@@ -442,8 +436,9 @@ static int ks_pcie_link_up(struct dw_pcie *pci)
{
u32 val;
- val = dw_pcie_readl_dbi(pci, DEBUG0);
- return (val & LTSSM_STATE_MASK) == LTSSM_STATE_L0;
+ val = dw_pcie_readl_dbi(pci, PCIE_PORT_DEBUG0);
+ val &= PORT_LOGIC_LTSSM_STATE_MASK;
+ return (val == PORT_LOGIC_LTSSM_STATE_L0);
}
static void ks_pcie_initiate_link_train(struct keystone_pcie *ks_pcie)
diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h
index 9f1a5e399b70..0989d880ac46 100644
--- a/drivers/pci/controller/dwc/pcie-designware.h
+++ b/drivers/pci/controller/dwc/pcie-designware.h
@@ -36,6 +36,10 @@
#define PORT_LINK_MODE_4_LANES (0x7 << 16)
#define PORT_LINK_MODE_8_LANES (0xf << 16)
+#define PCIE_PORT_DEBUG0 0x728
+#define PORT_LOGIC_LTSSM_STATE_MASK 0x1f
+#define PORT_LOGIC_LTSSM_STATE_L0 0x11
+
#define PCIE_LINK_WIDTH_SPEED_CONTROL 0x80C
#define PORT_LOGIC_SPEED_CHANGE (0x1 << 17)
#define PORT_LOGIC_LINK_WIDTH_MASK (0x1f << 8)
--
2.17.1